arch/arm64/VMSAv8TranslationMap.cpp

57 	int level = 4;
63 		level--;
66 	ASSERT(level >= 0);
68 	return level;
125 VMSAv8TranslationMap::MakeBlock(phys_addr_t pa, int level, uint64_t attr)
127 	ASSERT(level >= fMinBlockLevel && level < 4);
129 	return pa | attr | (level == 3 ? 0x3 : 0x1);
134 VMSAv8TranslationMap::FreeTable(phys_addr_t ptPa, int level)
136 	ASSERT(level < 3);
138 	if (level + 1 < 3) {
146 				FreeTable(pte & kPteAddrMask, level + 1);
158 	phys_addr_t ptPa, int level, int index, vm_page_reservation* reservation)
160 	if (level == 3)
180 			int shift = tableBits * (3 - (level + 1)) + fPageBits;
189 				newTable[i] = MakeBlock(addr + i * entrySize, level + 1, attr);
207 VMSAv8TranslationMap::MapRange(phys_addr_t ptPa, int level, addr_t va, phys_addr_t pa, size_t size,
210 	ASSERT(level < 4);
217 	int shift = tableBits * (3 - level) + fPageBits;
225 	// Handle misaligned header that straddles entry boundary in next-level table
230 			phys_addr_t table = MakeTable(ptPa, level, index, reservation);
231 			MapRange(table, level + 1, va, pa, aligned - va, action, attr, reservation);
243 			blockAllowed = (level >= fMinBlockLevel && (targetPa & entryMask) == 0);
245 			blockAllowed = (MakeTable(ptPa, level, index, NULL) == 0);
259 					newPte = MakeBlock(targetPa, level, attr);
261 					newPte = MakeBlock(oldPte & kPteAddrMask, level, MoveAttrFlags(attr, oldPte));
263 					newPte = MakeBlock(oldPte & kPteAddrMask, level, ClearAttrFlags(oldPte, attr));
273 				if (level < 3 && (oldPte & 0x3) == 0x3) {
275 					FreeTable(oldPte & kPteAddrMask, level);
279 			// Otherwise handle mapping in next-level table
280 			phys_addr_t table = MakeTable(ptPa, level, index, reservation);
281 			MapRange(table, level + 1, nextVa, targetPa, entrySize, action, attr, reservation);
286 	// Handle misaligned tail area (or entirety of small area) in next-level table
289 		phys_addr_t table = MakeTable(ptPa, level, index, reservation);
291 			table, level + 1, nextVa, pa + (nextVa - va), end - nextVa, action, attr, reservation);
444 	phys_addr_t ptPa, int level, addr_t va, phys_addr_t* pa, uint64_t* rpte)
449 	int shift = tableBits * (3 - level) + fPageBits;
462 	if (level < 3) {
464 			return WalkTable(addr, level + 1, va, pa, rpte);