646 |
646 |
647 // Free the page |
647 // Free the page |
648 r = iRamPageAllocator->FreePhysicalRam(*page, KPageSize); |
648 r = iRamPageAllocator->FreePhysicalRam(*page, KPageSize); |
649 } |
649 } |
650 return r; |
650 return r; |
|
651 } |
|
652 |
|
653 |
|
654 TInt MmuBase::FreeRamZone(TUint aZoneId, TPhysAddr& aZoneBase, TUint& aZoneBytes) |
|
655 { |
|
656 TUint zonePages; |
|
657 TInt r = iRamPageAllocator->GetZoneAddress(aZoneId, aZoneBase, zonePages); |
|
658 if (r != KErrNone) |
|
659 return r; |
|
660 aZoneBytes = zonePages << KPageShift; |
|
661 return MmuBase::FreePhysicalRam(aZoneBase, aZoneBytes); |
651 } |
662 } |
652 |
663 |
653 |
664 |
654 TInt MmuBase::ClaimPhysicalRam(TPhysAddr aPhysAddr, TInt aSize) |
665 TInt MmuBase::ClaimPhysicalRam(TPhysAddr aPhysAddr, TInt aSize) |
655 { |
666 { |
2047 return r; |
2058 return r; |
2048 } |
2059 } |
2049 |
2060 |
2050 |
2061 |
2051 /** |
2062 /** |
|
2063 Free a RAM zone which was previously allocated by one of these methods: |
|
2064 Epoc::AllocPhysicalRam(), Epoc::ZoneAllocPhysicalRam() or |
|
2065 TRamDefragRequest::ClaimRamZone(). |
|
2066 |
|
2067 All of the pages in the RAM zone must be allocated and only via one of the methods |
|
2068 listed above, otherwise a system panic will occur. |
|
2069 |
|
2070 @param aZoneId The ID of the RAM zone to free. |
|
2071 @return KErrNone If the operation was successful. |
|
2072 KErrArgument If a RAM zone with ID aZoneId was not found. |
|
2073 |
|
2074 @pre Calling thread must be in a critical section. |
|
2075 @pre Interrupts must be enabled. |
|
2076 @pre Kernel must be unlocked. |
|
2077 @pre No fast mutex can be held. |
|
2078 @pre Call in a thread context. |
|
2079 @pre Can be used in a device driver. |
|
2080 */ |
|
2081 EXPORT_C TInt Epoc::FreeRamZone(TUint aZoneId) |
|
2082 { |
|
2083 CHECK_PRECONDITIONS(MASK_THREAD_CRITICAL,"Epoc::FreeRamZone"); |
|
2084 MmuBase& m = *MmuBase::TheMmu; |
|
2085 MmuBase::Wait(); |
|
2086 TPhysAddr zoneBase; |
|
2087 TUint zoneBytes; |
|
2088 TInt r = m.FreeRamZone(aZoneId, zoneBase, zoneBytes); |
|
2089 #ifdef BTRACE_KERNEL_MEMORY |
|
2090 if (r == KErrNone) |
|
2091 { |
|
2092 BTrace8(BTrace::EKernelMemory, BTrace::EKernelMemoryDrvPhysFree, zoneBytes, zoneBase); |
|
2093 Epoc::DriverAllocdPhysRam -= zoneBytes; |
|
2094 } |
|
2095 #endif |
|
2096 MmuBase::Signal(); |
|
2097 return r; |
|
2098 } |
|
2099 |
|
2100 |
|
2101 /** |
2052 Translate a virtual address to the corresponding physical address. |
2102 Translate a virtual address to the corresponding physical address. |
2053 |
2103 |
2054 @param aLinAddr The virtual address to be translated. |
2104 @param aLinAddr The virtual address to be translated. |
2055 @return The physical address corresponding to the given virtual address, or |
2105 @return The physical address corresponding to the given virtual address, or |
2056 KPhysAddrInvalid if the specified virtual address is unmapped. |
2106 KPhysAddrInvalid if the specified virtual address is unmapped. |