diff options
Diffstat (limited to 'dev/kernel/HALKit/ARM64/HalPagingMgrARM64.cc')
| -rw-r--r-- | dev/kernel/HALKit/ARM64/HalPagingMgrARM64.cc | 143 |
1 files changed, 66 insertions, 77 deletions
diff --git a/dev/kernel/HALKit/ARM64/HalPagingMgrARM64.cc b/dev/kernel/HALKit/ARM64/HalPagingMgrARM64.cc index 08dd6180..e8c6875d 100644 --- a/dev/kernel/HALKit/ARM64/HalPagingMgrARM64.cc +++ b/dev/kernel/HALKit/ARM64/HalPagingMgrARM64.cc @@ -1,86 +1,75 @@ /* ------------------------------------------- - Copyright (C) 2024-2025, Amlal El Mahrouss, all rights reserved. + Copyright (C) 2024-2025, Amlal El Mahrouss, all rights reserved. - File: HalPagingMgr.cc - Purpose: Platform Paging Manager. + File: HalPagingMgr.cc + Purpose: Platform Paging Manager. ------------------------------------------- */ #include <HALKit/ARM64/Paging.h> #include <HALKit/ARM64/Processor.h> -namespace Kernel::HAL -{ - typedef UInt32 PageTableIndex; - - /// \brief Page store type. - struct NE_PAGE_STORE final - { - struct - { - PDE* fPde{nullptr}; - PTE* fPte{nullptr}; - VoidPtr fVAddr{nullptr}; - } fInternalStore; - - Bool fStoreOp{No}; // Store operation in progress. - - static NE_PAGE_STORE& The() - { - static NE_PAGE_STORE the; - return the; - } - }; - - /// \brief Retrieve the page status of a PTE. - STATIC Void mmi_page_status(PTE* pte) - { - } - - STATIC Int32 mmi_map_page_table_entry(VoidPtr virtual_address, UInt32 flags, PTE* pt_entry); - - /// @brief Maps or allocates a page from virtual_address. - /// @param virtual_address a valid virtual address. - /// @param phys_addr point to physical address. - /// @param flags the flags to put on the page. - /// @return Status code of page manipulation process. - EXTERN_C Int32 mm_map_page(VoidPtr virtual_address, VoidPtr physical_address, UInt32 flags) - { - if (!virtual_address || - !flags) - return 0; - - NE_PAGE_STORE& page_store = NE_PAGE_STORE::The(); - - while (page_store.fStoreOp) - ; - - page_store.fStoreOp = Yes; - - if (page_store.fInternalStore.fVAddr == virtual_address) - { - page_store.fStoreOp = No; - return mmi_map_page_table_entry(page_store.fInternalStore.fVAddr, flags, page_store.fInternalStore.fPte); - } - - return 1; - } - - /// @brief Maps flags for a specific pte. - /// @internal Internal function. - STATIC Int32 mmi_map_page_table_entry(VoidPtr virtual_address, UInt32 flags, PTE* pt_entry) - { - NE_PAGE_STORE& page_store = NE_PAGE_STORE::The(); - - // Update internal store. - - page_store.fInternalStore.fPde = nullptr; - page_store.fInternalStore.fPte = pt_entry; - page_store.fInternalStore.fVAddr = virtual_address; - - page_store.fStoreOp = No; - - return 0; - } -} // namespace Kernel::HAL +namespace Kernel::HAL { +typedef UInt32 PageTableIndex; + +/// \brief Page store type. +struct NE_PAGE_STORE final { + struct { + PDE* fPde{nullptr}; + PTE* fPte{nullptr}; + VoidPtr fVAddr{nullptr}; + } fInternalStore; + + Bool fStoreOp{No}; // Store operation in progress. + + static NE_PAGE_STORE& The() { + static NE_PAGE_STORE the; + return the; + } +}; + +/// \brief Retrieve the page status of a PTE. +STATIC Void mmi_page_status(PTE* pte) {} + +STATIC Int32 mmi_map_page_table_entry(VoidPtr virtual_address, UInt32 flags, PTE* pt_entry); + +/// @brief Maps or allocates a page from virtual_address. +/// @param virtual_address a valid virtual address. +/// @param phys_addr point to physical address. +/// @param flags the flags to put on the page. +/// @return Status code of page manipulation process. +EXTERN_C Int32 mm_map_page(VoidPtr virtual_address, VoidPtr physical_address, UInt32 flags) { + if (!virtual_address || !flags) return 0; + + NE_PAGE_STORE& page_store = NE_PAGE_STORE::The(); + + while (page_store.fStoreOp); + + page_store.fStoreOp = Yes; + + if (page_store.fInternalStore.fVAddr == virtual_address) { + page_store.fStoreOp = No; + return mmi_map_page_table_entry(page_store.fInternalStore.fVAddr, flags, + page_store.fInternalStore.fPte); + } + + return 1; +} + +/// @brief Maps flags for a specific pte. +/// @internal Internal function. +STATIC Int32 mmi_map_page_table_entry(VoidPtr virtual_address, UInt32 flags, PTE* pt_entry) { + NE_PAGE_STORE& page_store = NE_PAGE_STORE::The(); + + // Update internal store. + + page_store.fInternalStore.fPde = nullptr; + page_store.fInternalStore.fPte = pt_entry; + page_store.fInternalStore.fVAddr = virtual_address; + + page_store.fStoreOp = No; + + return 0; +} +} // namespace Kernel::HAL |