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@ -2068,4 +2068,109 @@ ResultCode KPageTable::CheckMemoryState(KMemoryState* out_state, KMemoryPermissi
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return ResultSuccess;
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}
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ResultCode KPageTable::LockMemoryAndOpen(KPageLinkedList* out_pg, PAddr* out_paddr, VAddr addr,
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size_t size, KMemoryState state_mask, KMemoryState state,
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KMemoryPermission perm_mask, KMemoryPermission perm,
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KMemoryAttribute attr_mask, KMemoryAttribute attr,
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KMemoryPermission new_perm, KMemoryAttribute lock_attr) {
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// Validate basic preconditions.
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ASSERT((lock_attr & attr) == KMemoryAttribute::None);
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ASSERT((lock_attr & (KMemoryAttribute::IpcLocked | KMemoryAttribute::DeviceShared)) ==
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KMemoryAttribute::None);
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// Validate the lock request.
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const size_t num_pages = size / PageSize;
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R_UNLESS(this->Contains(addr, size), ResultInvalidCurrentMemory);
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// Lock the table.
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KScopedLightLock lk(general_lock);
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// Check that the output page group is empty, if it exists.
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if (out_pg) {
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ASSERT(out_pg->GetNumPages() == 0);
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}
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// Check the state.
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KMemoryState old_state{};
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KMemoryPermission old_perm{};
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KMemoryAttribute old_attr{};
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size_t num_allocator_blocks{};
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R_TRY(this->CheckMemoryState(std::addressof(old_state), std::addressof(old_perm),
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std::addressof(old_attr), std::addressof(num_allocator_blocks),
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addr, size, state_mask | KMemoryState::FlagReferenceCounted,
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state | KMemoryState::FlagReferenceCounted, perm_mask, perm,
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attr_mask, attr));
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// Get the physical address, if we're supposed to.
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if (out_paddr != nullptr) {
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ASSERT(this->GetPhysicalAddressLocked(out_paddr, addr));
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}
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// Make the page group, if we're supposed to.
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if (out_pg != nullptr) {
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R_TRY(this->MakePageGroup(*out_pg, addr, num_pages));
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}
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// Decide on new perm and attr.
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new_perm = (new_perm != KMemoryPermission::None) ? new_perm : old_perm;
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KMemoryAttribute new_attr = static_cast<KMemoryAttribute>(old_attr | lock_attr);
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// Update permission, if we need to.
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if (new_perm != old_perm) {
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R_TRY(Operate(addr, num_pages, new_perm, OperationType::ChangePermissions));
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}
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// Apply the memory block updates.
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block_manager->Update(addr, num_pages, old_state, new_perm, new_attr);
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return ResultSuccess;
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}
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ResultCode KPageTable::UnlockMemory(VAddr addr, size_t size, KMemoryState state_mask,
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KMemoryState state, KMemoryPermission perm_mask,
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KMemoryPermission perm, KMemoryAttribute attr_mask,
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KMemoryAttribute attr, KMemoryPermission new_perm,
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KMemoryAttribute lock_attr, const KPageLinkedList* pg) {
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// Validate basic preconditions.
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ASSERT((attr_mask & lock_attr) == lock_attr);
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ASSERT((attr & lock_attr) == lock_attr);
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// Validate the unlock request.
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const size_t num_pages = size / PageSize;
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R_UNLESS(this->Contains(addr, size), ResultInvalidCurrentMemory);
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// Lock the table.
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KScopedLightLock lk(general_lock);
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// Check the state.
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KMemoryState old_state{};
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KMemoryPermission old_perm{};
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KMemoryAttribute old_attr{};
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size_t num_allocator_blocks{};
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R_TRY(this->CheckMemoryState(std::addressof(old_state), std::addressof(old_perm),
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std::addressof(old_attr), std::addressof(num_allocator_blocks),
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addr, size, state_mask | KMemoryState::FlagReferenceCounted,
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state | KMemoryState::FlagReferenceCounted, perm_mask, perm,
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attr_mask, attr));
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// Check the page group.
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if (pg != nullptr) {
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UNIMPLEMENTED_MSG("PageGroup support is unimplemented!");
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}
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// Decide on new perm and attr.
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new_perm = (new_perm != KMemoryPermission::None) ? new_perm : old_perm;
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KMemoryAttribute new_attr = static_cast<KMemoryAttribute>(old_attr & ~lock_attr);
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// Update permission, if we need to.
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if (new_perm != old_perm) {
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R_TRY(Operate(addr, num_pages, new_perm, OperationType::ChangePermissions));
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}
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// Apply the memory block updates.
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block_manager->Update(addr, num_pages, old_state, new_perm, new_attr);
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return ResultSuccess;
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}
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} // namespace Kernel
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