mirror of
https://github.com/LadybirdBrowser/ladybird.git
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7d862dd5fc
String.h no longer pulls in StringView.h. We do this by moving a bunch of String functions out-of-line.
257 lines
14 KiB
C++
257 lines
14 KiB
C++
/*
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* Copyright (c) 2020, Liav A. <liavalb@hotmail.co.il>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <AK/StringView.h>
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#include <Kernel/ACPI/MultiProcessorParser.h>
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#include <Kernel/VM/MemoryManager.h>
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#include <LibBareMetal/StdLib.h>
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namespace Kernel {
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static MultiProcessorParser* s_parser;
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bool MultiProcessorParser::is_initialized()
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{
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return s_parser != nullptr;
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}
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void MultiProcessorParser::initialize()
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{
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if (!MultiProcessorParser::is_initialized())
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s_parser = new MultiProcessorParser;
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}
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MultiProcessorParser::MultiProcessorParser()
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: m_floating_pointer(search_floating_pointer())
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, m_operable((m_floating_pointer != (FlatPtr) nullptr))
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{
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if (m_floating_pointer != (FlatPtr) nullptr) {
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klog() << "MultiProcessor: Floating Pointer Structure @ " << PhysicalAddress(m_floating_pointer);
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parse_floating_pointer_data();
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parse_configuration_table();
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} else {
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klog() << "MultiProcessor: Can't Locate Floating Pointer Structure, disabled.";
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}
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}
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void MultiProcessorParser::parse_floating_pointer_data()
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{
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auto floating_pointer_region = MM.allocate_kernel_region(PhysicalAddress(page_base_of((u32)m_floating_pointer)), PAGE_SIZE * 2, "MultiProcessor Parser Parsing Floating Pointer Structure", Region::Access::Read, false, true);
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auto* floating_pointer = (MultiProcessor::FloatingPointer*)floating_pointer_region->vaddr().offset(offset_in_page((u32)m_floating_pointer)).as_ptr();
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m_configuration_table = floating_pointer->physical_address_ptr;
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m_specification_revision = floating_pointer->specification_revision;
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dbg() << "Features " << floating_pointer->feature_info[0] << ", IMCR? " << (floating_pointer->feature_info[0] & (1 << 7));
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}
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size_t MultiProcessorParser::get_configuration_table_length()
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{
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auto config_table_region = MM.allocate_kernel_region(PhysicalAddress(page_base_of((u32)m_configuration_table)), PAGE_SIZE * 2, "MultiProcessor Parser Getting Configuration Table length", Region::Access::Read, false, true);
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auto* config_table = (MultiProcessor::ConfigurationTableHeader*)config_table_region->vaddr().offset(offset_in_page((u32)m_configuration_table)).as_ptr();
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return config_table->length;
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}
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void MultiProcessorParser::parse_configuration_table()
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{
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m_configuration_table_length = get_configuration_table_length();
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auto config_table_region = MM.allocate_kernel_region(PhysicalAddress(page_base_of((u32)m_configuration_table)), PAGE_ROUND_UP(m_configuration_table_length), "MultiProcessor Parser Parsing Configuration Table", Region::Access::Read, false, true);
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auto* config_table = (MultiProcessor::ConfigurationTableHeader*)config_table_region->vaddr().offset(offset_in_page((u32)m_configuration_table)).as_ptr();
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size_t entry_count = config_table->entry_count;
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auto* entry = config_table->entries;
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auto* p_entry = reinterpret_cast<MultiProcessor::ConfigurationTableHeader*>(m_configuration_table)->entries;
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while (entry_count > 0) {
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dbg() << "MultiProcessor: Entry Type " << entry->entry_type << " detected.";
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switch (entry->entry_type) {
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case ((u8)MultiProcessor::ConfigurationTableEntryType::Processor):
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entry = (MultiProcessor::EntryHeader*)(u32)entry + (u8)MultiProcessor::ConfigurationTableEntryLength::Processor;
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p_entry = (MultiProcessor::EntryHeader*)(u32)p_entry + (u8)MultiProcessor::ConfigurationTableEntryLength::Processor;
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break;
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case ((u8)MultiProcessor::ConfigurationTableEntryType::Bus):
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m_bus_entries.append((FlatPtr)p_entry);
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entry = (MultiProcessor::EntryHeader*)(u32)entry + (u8)MultiProcessor::ConfigurationTableEntryLength::Bus;
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p_entry = (MultiProcessor::EntryHeader*)(u32)p_entry + (u8)MultiProcessor::ConfigurationTableEntryLength::Bus;
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break;
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case ((u8)MultiProcessor::ConfigurationTableEntryType::IOAPIC):
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entry = (MultiProcessor::EntryHeader*)(u32)entry + (u8)MultiProcessor::ConfigurationTableEntryLength::IOAPIC;
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p_entry = (MultiProcessor::EntryHeader*)(u32)p_entry + (u8)MultiProcessor::ConfigurationTableEntryLength::IOAPIC;
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break;
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case ((u8)MultiProcessor::ConfigurationTableEntryType::IO_Interrupt_Assignment):
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m_io_interrupt_redirection_entries.append((FlatPtr)p_entry);
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entry = (MultiProcessor::EntryHeader*)(u32)entry + (u8)MultiProcessor::ConfigurationTableEntryLength::IO_Interrupt_Assignment;
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p_entry = (MultiProcessor::EntryHeader*)(u32)p_entry + (u8)MultiProcessor::ConfigurationTableEntryLength::IO_Interrupt_Assignment;
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break;
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case ((u8)MultiProcessor::ConfigurationTableEntryType::Local_Interrupt_Assignment):
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entry = (MultiProcessor::EntryHeader*)(u32)entry + (u8)MultiProcessor::ConfigurationTableEntryLength::Local_Interrupt_Assignment;
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p_entry = (MultiProcessor::EntryHeader*)(u32)p_entry + (u8)MultiProcessor::ConfigurationTableEntryLength::Local_Interrupt_Assignment;
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break;
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case ((u8)MultiProcessor::ConfigurationTableEntryType::SystemAddressSpaceMapping):
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entry = (MultiProcessor::EntryHeader*)(u32)entry + (u8)MultiProcessor::ConfigurationTableEntryLength::SystemAddressSpaceMapping;
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p_entry = (MultiProcessor::EntryHeader*)(u32)p_entry + (u8)MultiProcessor::ConfigurationTableEntryLength::SystemAddressSpaceMapping;
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break;
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case ((u8)MultiProcessor::ConfigurationTableEntryType::BusHierarchyDescriptor):
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entry = (MultiProcessor::EntryHeader*)(u32)entry + (u8)MultiProcessor::ConfigurationTableEntryLength::BusHierarchyDescriptor;
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p_entry = (MultiProcessor::EntryHeader*)(u32)p_entry + (u8)MultiProcessor::ConfigurationTableEntryLength::BusHierarchyDescriptor;
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break;
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case ((u8)MultiProcessor::ConfigurationTableEntryType::CompatibilityBusAddressSpaceModifier):
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entry = (MultiProcessor::EntryHeader*)(u32)entry + (u8)MultiProcessor::ConfigurationTableEntryLength::CompatibilityBusAddressSpaceModifier;
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p_entry = (MultiProcessor::EntryHeader*)(u32)p_entry + (u8)MultiProcessor::ConfigurationTableEntryLength::CompatibilityBusAddressSpaceModifier;
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break;
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ASSERT_NOT_REACHED();
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}
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entry_count--;
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}
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}
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FlatPtr MultiProcessorParser::search_floating_pointer()
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{
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FlatPtr mp_floating_pointer = (FlatPtr) nullptr;
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auto region = MM.allocate_kernel_region(PhysicalAddress(0), PAGE_SIZE, "MultiProcessor Parser Floating Pointer Structure Finding", Region::Access::Read);
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u16 ebda_seg = (u16) * ((uint16_t*)((region->vaddr().get() & PAGE_MASK) + 0x40e));
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klog() << "MultiProcessor: Probing EBDA, Segment 0x" << String::format("%x", ebda_seg);
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mp_floating_pointer = search_floating_pointer_in_ebda(ebda_seg);
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if (mp_floating_pointer != (FlatPtr) nullptr)
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return mp_floating_pointer;
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return search_floating_pointer_in_bios_area();
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}
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FlatPtr MultiProcessorParser::search_floating_pointer_in_ebda(u16 ebda_segment)
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{
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auto floating_pointer_region = MM.allocate_kernel_region(PhysicalAddress(page_base_of((u32)(ebda_segment << 4))), PAGE_ROUND_UP(1024), "MultiProcessor Parser floating_pointer Finding #1", Region::Access::Read, false, true);
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char* p_floating_pointer_str = (char*)(PhysicalAddress(ebda_segment << 4).as_ptr());
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for (char* floating_pointer_str = (char*)floating_pointer_region->vaddr().offset(offset_in_page((u32)(ebda_segment << 4))).as_ptr(); floating_pointer_str < (char*)(floating_pointer_region->vaddr().offset(offset_in_page((u32)(ebda_segment << 4))).get() + 1024); floating_pointer_str += 16) {
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#ifdef MUTLIPROCESSOR_DEBUG
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dbg() << "MultiProcessor: Looking for floating pointer structure in EBDA @ V0x " << String::format("%x", floating_pointer_str) << ", P0x" << String::format("%x", p_floating_pointer_str);
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#endif
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if (!strncmp("_MP_", floating_pointer_str, strlen("_MP_")))
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return (FlatPtr)p_floating_pointer_str;
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p_floating_pointer_str += 16;
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}
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return (FlatPtr) nullptr;
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}
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FlatPtr MultiProcessorParser::search_floating_pointer_in_bios_area()
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{
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auto floating_pointer_region = MM.allocate_kernel_region(PhysicalAddress(page_base_of((u32)0xE0000)), PAGE_ROUND_UP(0xFFFFF - 0xE0000), "MultiProcessor Parser floating_pointer Finding #2", Region::Access::Read, false, true);
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char* p_floating_pointer_str = (char*)(PhysicalAddress(0xE0000).as_ptr());
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for (char* floating_pointer_str = (char*)floating_pointer_region->vaddr().offset(offset_in_page((u32)(0xE0000))).as_ptr(); floating_pointer_str < (char*)(floating_pointer_region->vaddr().offset(offset_in_page((u32)(0xE0000))).get() + (0xFFFFF - 0xE0000)); floating_pointer_str += 16) {
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#ifdef MUTLIPROCESSOR_DEBUG
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dbg() << "MultiProcessor: Looking for floating pointer structure in BIOS area @ V0x " << String::format("%x", floating_pointer_str) << ", P0x" << String::format("%x", p_floating_pointer_str);
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#endif
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if (!strncmp("_MP_", floating_pointer_str, strlen("_MP_")))
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return (FlatPtr)p_floating_pointer_str;
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p_floating_pointer_str += 16;
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}
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return (FlatPtr) nullptr;
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}
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Vector<unsigned> MultiProcessorParser::get_pci_bus_ids()
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{
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Vector<unsigned> pci_bus_ids;
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for (auto entry : m_bus_entries) {
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auto entry_region = MM.allocate_kernel_region(PhysicalAddress(page_base_of((u32)entry)), PAGE_ROUND_UP(m_configuration_table_length), "MultiProcessor Parser Parsing Bus Entry", Region::Access::Read, false, true);
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auto* v_entry_ptr = (MultiProcessor::BusEntry*)entry_region->vaddr().offset(offset_in_page((u32)entry)).as_ptr();
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if (!strncmp("PCI ", v_entry_ptr->bus_type, strlen("PCI ")))
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pci_bus_ids.append(v_entry_ptr->bus_id);
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}
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return pci_bus_ids;
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}
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MultiProcessorParser& MultiProcessorParser::the()
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{
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ASSERT(!MultiProcessorParser::is_initialized());
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return *s_parser;
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}
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Vector<RefPtr<PCIInterruptOverrideMetadata>> MultiProcessorParser::get_pci_interrupt_redirections()
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{
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dbg() << "MultiProcessor: Get PCI IOAPIC redirections";
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Vector<RefPtr<PCIInterruptOverrideMetadata>> overrides;
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Vector<unsigned> pci_bus_ids = get_pci_bus_ids();
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for (auto entry : m_io_interrupt_redirection_entries) {
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auto entry_region = MM.allocate_kernel_region(PhysicalAddress(page_base_of((u32)entry)), PAGE_ROUND_UP(m_configuration_table_length), "MultiProcessor Parser Parsing Bus Entry", Region::Access::Read, false, true);
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auto* v_entry_ptr = (MultiProcessor::IOInterruptAssignmentEntry*)entry_region->vaddr().offset(offset_in_page((u32)entry)).as_ptr();
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dbg() << "MultiProcessor: Parsing Entry P 0x" << String::format("%x", entry) << ", V " << v_entry_ptr;
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for (auto id : pci_bus_ids) {
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if (id == v_entry_ptr->source_bus_id) {
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klog() << "Interrupts: Bus " << v_entry_ptr->source_bus_id << ", Polarity " << v_entry_ptr->polarity << ", Trigger Mode " << v_entry_ptr->trigger_mode << ", INT " << v_entry_ptr->source_bus_irq << ", IOAPIC " << v_entry_ptr->destination_ioapic_id << ", IOAPIC INTIN " << v_entry_ptr->destination_ioapic_intin_pin;
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overrides.append(adopt(*new PCIInterruptOverrideMetadata(
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v_entry_ptr->source_bus_id,
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v_entry_ptr->polarity,
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v_entry_ptr->trigger_mode,
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v_entry_ptr->source_bus_irq,
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v_entry_ptr->destination_ioapic_id,
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v_entry_ptr->destination_ioapic_intin_pin)));
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}
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}
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}
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for (auto override_metadata : overrides) {
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klog() << "Interrupts: Bus " << override_metadata->bus() << ", Polarity " << override_metadata->polarity() << ", PCI Device " << override_metadata->pci_device_number() << ", Trigger Mode " << override_metadata->trigger_mode() << ", INT " << override_metadata->pci_interrupt_pin() << ", IOAPIC " << override_metadata->ioapic_id() << ", IOAPIC INTIN " << override_metadata->ioapic_interrupt_pin();
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}
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return overrides;
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}
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PCIInterruptOverrideMetadata::PCIInterruptOverrideMetadata(u8 bus_id, u8 polarity, u8 trigger_mode, u8 source_irq, u32 ioapic_id, u16 ioapic_int_pin)
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: m_bus_id(bus_id)
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, m_polarity(polarity)
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, m_trigger_mode(trigger_mode)
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, m_pci_interrupt_pin(source_irq & 0b11)
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, m_pci_device_number((source_irq & 0b11111) >> 2)
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, m_ioapic_id(ioapic_id)
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, m_ioapic_interrupt_pin(ioapic_int_pin)
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{
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}
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u8 PCIInterruptOverrideMetadata::bus() const
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{
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return m_bus_id;
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}
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u8 PCIInterruptOverrideMetadata::polarity() const
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{
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return m_polarity;
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}
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u8 PCIInterruptOverrideMetadata::trigger_mode() const
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{
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return m_trigger_mode;
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}
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u8 PCIInterruptOverrideMetadata::pci_interrupt_pin() const
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{
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return m_pci_interrupt_pin;
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}
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u8 PCIInterruptOverrideMetadata::pci_device_number() const
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{
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return m_pci_device_number;
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}
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u32 PCIInterruptOverrideMetadata::ioapic_id() const
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{
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return m_ioapic_id;
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}
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u16 PCIInterruptOverrideMetadata::ioapic_interrupt_pin() const
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{
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return m_ioapic_interrupt_pin;
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}
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}
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