arch/x86/arch_vm.cpp

67 	uint32						type;
97 static mutex sMemoryTypeLock = MUTEX_INITIALIZER("memory type ranges");
123 			B_PRIx64 ", type: %u\n", i, info.base, info.size,
124 			info.type);
131 add_used_mtrr(uint64 base, uint64 size, uint32 type)
139 	mtrr.type = type;
146 add_mtrrs_for_range(uint64 base, uint64 size, uint32 type)
150 			if (!add_used_mtrr(base, interval, type))
157 			if (!add_used_mtrr(base + size - interval, interval, type))
181 optimize_memory_ranges(MemoryTypeRangeList& ranges, uint32 type,
189 		if (range->type != type) {
200 				if (nextRange->type != range->type) {
323 		if (range->type == IA32_MTR_UNCACHED) {
343 	TRACE_MTRR2("memory type range points:\n");
368 			if (activeRange != NULL && activeRange->type > point->range->type)
397 			if (activeRange == NULL || activeRange->type > pendingRange->type)
403 		if (previousRange == NULL || previousRange->type != activeRange->type
408 			ranges[rangeCount].type = activeRange->type;
414 	TRACE_MTRR2("effective memory type ranges:\n");
417 			ranges[i].base, ranges[i].base + ranges[i].size, ranges[i].type);
429 	// range; the resulting type will still be uncached. Hence we can ignore
431 	// intersect with write-back ranges; the resulting type will be
450 		uint32 type = kMemoryTypes[i];
455 		bool removeRanges = type == IA32_MTR_UNCACHED
456 			|| type == IA32_MTR_WRITE_THROUGH;
458 		optimize_memory_ranges(rangeList, type, removeRanges);
462 	TRACE_MTRR2("optimized memory type ranges:\n");
467 				ranges[i].type);
475 		uint32 type = kMemoryTypes[i];
477 		// skip write-back ranges -- that'll be the default type anyway
478 		if (type == IA32_MTR_WRITE_BACK)
482 			if (ranges[i].size == 0 || ranges[i].type != type)
485 			if (!add_mtrrs_for_range(ranges[i].base, ranges[i].size, type))
538 add_memory_type_range(area_id areaID, uint64 base, uint64 size, uint32 type)
540 	// translate the type
541 	if (type == 0)
544 	switch (type) {
546 			type = IA32_MTR_UNCACHED;
549 			type = IA32_MTR_WRITE_COMBINING;
552 			type = IA32_MTR_WRITE_THROUGH;
555 			type = IA32_MTR_WRITE_PROTECTED;
558 			type = IA32_MTR_WRITE_BACK;
565 		B_PRIx64 ", %" B_PRIu32 ")\n", areaID, base, size, type);
574 		if (range->type == type)
577 		oldRangeType = range->type;
578 		range->type = type;
587 		range->type = type;
594 		// revert the addition of the range/change of its type
600 			range->type = oldRangeType;
619 			range->size, range->type);
761 	uint32 type)
763 	return add_memory_type_range(area->id, physicalBase, area->Size(), type);