mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2025-04-25 22:08:59 +00:00
0fc60e41dd
Also, duplicate data in dbg() and klog() calls were removed. In addition, leakage of virtual address to kernel log is prevented. This is done by replacing kprintf() calls to dbg() calls with the leaked data instead. Also, other kprintf() calls were replaced with klog().
254 lines
14 KiB
C++
254 lines
14 KiB
C++
/*
|
|
* Copyright (c) 2020, Liav A. <liavalb@hotmail.co.il>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice, this
|
|
* list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <Kernel/ACPI/MultiProcessorParser.h>
|
|
#include <Kernel/VM/MemoryManager.h>
|
|
#include <LibBareMetal/StdLib.h>
|
|
|
|
namespace Kernel {
|
|
|
|
static MultiProcessorParser* s_parser;
|
|
|
|
bool MultiProcessorParser::is_initialized()
|
|
{
|
|
return s_parser != nullptr;
|
|
}
|
|
|
|
void MultiProcessorParser::initialize()
|
|
{
|
|
if (!MultiProcessorParser::is_initialized())
|
|
s_parser = new MultiProcessorParser;
|
|
}
|
|
|
|
MultiProcessorParser::MultiProcessorParser()
|
|
: m_floating_pointer(search_floating_pointer())
|
|
, m_operable((m_floating_pointer != (uintptr_t) nullptr))
|
|
{
|
|
if (m_floating_pointer != (uintptr_t) nullptr) {
|
|
klog() << "MultiProcessor: Floating Pointer Structure @ P " << String::format("%p", m_floating_pointer);
|
|
parse_floating_pointer_data();
|
|
parse_configuration_table();
|
|
} else {
|
|
klog() << "MultiProcessor: Can't Locate Floating Pointer Structure, disabled.";
|
|
}
|
|
}
|
|
|
|
void MultiProcessorParser::parse_floating_pointer_data()
|
|
{
|
|
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);
|
|
auto* floating_pointer = (MultiProcessor::FloatingPointer*)floating_pointer_region->vaddr().offset(offset_in_page((u32)m_floating_pointer)).as_ptr();
|
|
m_configuration_table = floating_pointer->physical_address_ptr;
|
|
m_specification_revision = floating_pointer->specification_revision;
|
|
}
|
|
|
|
size_t MultiProcessorParser::get_configuration_table_length()
|
|
{
|
|
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);
|
|
auto* config_table = (MultiProcessor::ConfigurationTableHeader*)config_table_region->vaddr().offset(offset_in_page((u32)m_configuration_table)).as_ptr();
|
|
return config_table->length;
|
|
}
|
|
|
|
void MultiProcessorParser::parse_configuration_table()
|
|
{
|
|
m_configuration_table_length = get_configuration_table_length();
|
|
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);
|
|
auto* config_table = (MultiProcessor::ConfigurationTableHeader*)config_table_region->vaddr().offset(offset_in_page((u32)m_configuration_table)).as_ptr();
|
|
|
|
size_t entry_count = config_table->entry_count;
|
|
auto* entry = config_table->entries;
|
|
auto* p_entry = reinterpret_cast<MultiProcessor::ConfigurationTableHeader*>(m_configuration_table)->entries;
|
|
while (entry_count > 0) {
|
|
dbg() << "MultiProcessor: Entry Type " << entry->entry_type << " detected.";
|
|
switch (entry->entry_type) {
|
|
case ((u8)MultiProcessor::ConfigurationTableEntryType::Processor):
|
|
entry = (MultiProcessor::EntryHeader*)(u32)entry + (u8)MultiProcessor::ConfigurationTableEntryLength::Processor;
|
|
p_entry = (MultiProcessor::EntryHeader*)(u32)p_entry + (u8)MultiProcessor::ConfigurationTableEntryLength::Processor;
|
|
break;
|
|
case ((u8)MultiProcessor::ConfigurationTableEntryType::Bus):
|
|
m_bus_entries.append((uintptr_t)p_entry);
|
|
entry = (MultiProcessor::EntryHeader*)(u32)entry + (u8)MultiProcessor::ConfigurationTableEntryLength::Bus;
|
|
p_entry = (MultiProcessor::EntryHeader*)(u32)p_entry + (u8)MultiProcessor::ConfigurationTableEntryLength::Bus;
|
|
break;
|
|
case ((u8)MultiProcessor::ConfigurationTableEntryType::IOAPIC):
|
|
entry = (MultiProcessor::EntryHeader*)(u32)entry + (u8)MultiProcessor::ConfigurationTableEntryLength::IOAPIC;
|
|
p_entry = (MultiProcessor::EntryHeader*)(u32)p_entry + (u8)MultiProcessor::ConfigurationTableEntryLength::IOAPIC;
|
|
break;
|
|
case ((u8)MultiProcessor::ConfigurationTableEntryType::IO_Interrupt_Assignment):
|
|
m_io_interrupt_redirection_entries.append((uintptr_t)p_entry);
|
|
entry = (MultiProcessor::EntryHeader*)(u32)entry + (u8)MultiProcessor::ConfigurationTableEntryLength::IO_Interrupt_Assignment;
|
|
p_entry = (MultiProcessor::EntryHeader*)(u32)p_entry + (u8)MultiProcessor::ConfigurationTableEntryLength::IO_Interrupt_Assignment;
|
|
break;
|
|
case ((u8)MultiProcessor::ConfigurationTableEntryType::Local_Interrupt_Assignment):
|
|
entry = (MultiProcessor::EntryHeader*)(u32)entry + (u8)MultiProcessor::ConfigurationTableEntryLength::Local_Interrupt_Assignment;
|
|
p_entry = (MultiProcessor::EntryHeader*)(u32)p_entry + (u8)MultiProcessor::ConfigurationTableEntryLength::Local_Interrupt_Assignment;
|
|
break;
|
|
case ((u8)MultiProcessor::ConfigurationTableEntryType::SystemAddressSpaceMapping):
|
|
entry = (MultiProcessor::EntryHeader*)(u32)entry + (u8)MultiProcessor::ConfigurationTableEntryLength::SystemAddressSpaceMapping;
|
|
p_entry = (MultiProcessor::EntryHeader*)(u32)p_entry + (u8)MultiProcessor::ConfigurationTableEntryLength::SystemAddressSpaceMapping;
|
|
break;
|
|
case ((u8)MultiProcessor::ConfigurationTableEntryType::BusHierarchyDescriptor):
|
|
entry = (MultiProcessor::EntryHeader*)(u32)entry + (u8)MultiProcessor::ConfigurationTableEntryLength::BusHierarchyDescriptor;
|
|
p_entry = (MultiProcessor::EntryHeader*)(u32)p_entry + (u8)MultiProcessor::ConfigurationTableEntryLength::BusHierarchyDescriptor;
|
|
break;
|
|
case ((u8)MultiProcessor::ConfigurationTableEntryType::CompatibilityBusAddressSpaceModifier):
|
|
entry = (MultiProcessor::EntryHeader*)(u32)entry + (u8)MultiProcessor::ConfigurationTableEntryLength::CompatibilityBusAddressSpaceModifier;
|
|
p_entry = (MultiProcessor::EntryHeader*)(u32)p_entry + (u8)MultiProcessor::ConfigurationTableEntryLength::CompatibilityBusAddressSpaceModifier;
|
|
break;
|
|
ASSERT_NOT_REACHED();
|
|
}
|
|
entry_count--;
|
|
}
|
|
}
|
|
|
|
uintptr_t MultiProcessorParser::search_floating_pointer()
|
|
{
|
|
uintptr_t mp_floating_pointer = (uintptr_t) nullptr;
|
|
auto region = MM.allocate_kernel_region(PhysicalAddress(0), PAGE_SIZE, "MultiProcessor Parser Floating Pointer Structure Finding", Region::Access::Read);
|
|
u16 ebda_seg = (u16) * ((uint16_t*)((region->vaddr().get() & PAGE_MASK) + 0x40e));
|
|
klog() << "MultiProcessor: Probing EBDA, Segment 0x" << String::format("%x", ebda_seg);
|
|
|
|
mp_floating_pointer = search_floating_pointer_in_ebda(ebda_seg);
|
|
if (mp_floating_pointer != (uintptr_t) nullptr)
|
|
return mp_floating_pointer;
|
|
return search_floating_pointer_in_bios_area();
|
|
}
|
|
|
|
uintptr_t MultiProcessorParser::search_floating_pointer_in_ebda(u16 ebda_segment)
|
|
{
|
|
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);
|
|
char* p_floating_pointer_str = (char*)(PhysicalAddress(ebda_segment << 4).as_ptr());
|
|
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) {
|
|
#ifdef MUTLIPROCESSOR_DEBUG
|
|
dbg() << "MultiProcessor: Looking for floating pointer structure in EBDA @ V0x " << String::format("%x", floating_pointer_str) << ", P0x" << String::format("%x", p_floating_pointer_str);
|
|
#endif
|
|
if (!strncmp("_MP_", floating_pointer_str, strlen("_MP_")))
|
|
return (uintptr_t)p_floating_pointer_str;
|
|
p_floating_pointer_str += 16;
|
|
}
|
|
return (uintptr_t) nullptr;
|
|
}
|
|
uintptr_t MultiProcessorParser::search_floating_pointer_in_bios_area()
|
|
{
|
|
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);
|
|
char* p_floating_pointer_str = (char*)(PhysicalAddress(0xE0000).as_ptr());
|
|
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) {
|
|
#ifdef MUTLIPROCESSOR_DEBUG
|
|
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);
|
|
#endif
|
|
if (!strncmp("_MP_", floating_pointer_str, strlen("_MP_")))
|
|
return (uintptr_t)p_floating_pointer_str;
|
|
p_floating_pointer_str += 16;
|
|
}
|
|
return (uintptr_t) nullptr;
|
|
}
|
|
|
|
Vector<unsigned> MultiProcessorParser::get_pci_bus_ids()
|
|
{
|
|
Vector<unsigned> pci_bus_ids;
|
|
for (auto entry : m_bus_entries) {
|
|
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);
|
|
auto* v_entry_ptr = (MultiProcessor::BusEntry*)entry_region->vaddr().offset(offset_in_page((u32)entry)).as_ptr();
|
|
if (!strncmp("PCI ", v_entry_ptr->bus_type, strlen("PCI ")))
|
|
pci_bus_ids.append(v_entry_ptr->bus_id);
|
|
}
|
|
return pci_bus_ids;
|
|
}
|
|
|
|
MultiProcessorParser& MultiProcessorParser::the()
|
|
{
|
|
ASSERT(!MultiProcessorParser::is_initialized());
|
|
return *s_parser;
|
|
}
|
|
|
|
Vector<RefPtr<PCIInterruptOverrideMetadata>> MultiProcessorParser::get_pci_interrupt_redirections()
|
|
{
|
|
dbg() << "MultiProcessor: Get PCI IOAPIC redirections";
|
|
Vector<RefPtr<PCIInterruptOverrideMetadata>> overrides;
|
|
Vector<unsigned> pci_bus_ids = get_pci_bus_ids();
|
|
for (auto entry : m_io_interrupt_redirection_entries) {
|
|
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);
|
|
auto* v_entry_ptr = (MultiProcessor::IOInterruptAssignmentEntry*)entry_region->vaddr().offset(offset_in_page((u32)entry)).as_ptr();
|
|
dbg() << "MultiProcessor: Parsing Entry P 0x" << String::format("%x", entry) << ", V " << v_entry_ptr;
|
|
for (auto id : pci_bus_ids) {
|
|
if (id == v_entry_ptr->source_bus_id) {
|
|
|
|
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;
|
|
overrides.append(adopt(*new PCIInterruptOverrideMetadata(
|
|
v_entry_ptr->source_bus_id,
|
|
v_entry_ptr->polarity,
|
|
v_entry_ptr->trigger_mode,
|
|
v_entry_ptr->source_bus_irq,
|
|
v_entry_ptr->destination_ioapic_id,
|
|
v_entry_ptr->destination_ioapic_intin_pin)));
|
|
}
|
|
}
|
|
}
|
|
|
|
for (auto override_metadata : overrides) {
|
|
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();
|
|
}
|
|
return overrides;
|
|
}
|
|
|
|
PCIInterruptOverrideMetadata::PCIInterruptOverrideMetadata(u8 bus_id, u8 polarity, u8 trigger_mode, u8 source_irq, u32 ioapic_id, u16 ioapic_int_pin)
|
|
: m_bus_id(bus_id)
|
|
, m_polarity(polarity)
|
|
, m_trigger_mode(trigger_mode)
|
|
, m_pci_interrupt_pin(source_irq & 0b11)
|
|
, m_pci_device_number((source_irq & 0b11111) >> 2)
|
|
, m_ioapic_id(ioapic_id)
|
|
, m_ioapic_interrupt_pin(ioapic_int_pin)
|
|
{
|
|
}
|
|
u8 PCIInterruptOverrideMetadata::bus() const
|
|
{
|
|
return m_bus_id;
|
|
}
|
|
u8 PCIInterruptOverrideMetadata::polarity() const
|
|
{
|
|
return m_polarity;
|
|
}
|
|
u8 PCIInterruptOverrideMetadata::trigger_mode() const
|
|
{
|
|
return m_trigger_mode;
|
|
}
|
|
u8 PCIInterruptOverrideMetadata::pci_interrupt_pin() const
|
|
{
|
|
return m_pci_interrupt_pin;
|
|
}
|
|
u8 PCIInterruptOverrideMetadata::pci_device_number() const
|
|
{
|
|
return m_pci_device_number;
|
|
}
|
|
u32 PCIInterruptOverrideMetadata::ioapic_id() const
|
|
{
|
|
return m_ioapic_id;
|
|
}
|
|
u16 PCIInterruptOverrideMetadata::ioapic_interrupt_pin() const
|
|
{
|
|
return m_ioapic_interrupt_pin;
|
|
}
|
|
}
|