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149 lines
4.5 KiB
C++
149 lines
4.5 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 <Kernel/ACPI/ACPIParser.h>
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#include <Kernel/CommandLine.h>
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#include <Kernel/Net/E1000NetworkAdapter.h>
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#include <Kernel/Net/RTL8139NetworkAdapter.h>
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#include <Kernel/PCI/IOAccess.h>
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#include <Kernel/PCI/Initializer.h>
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#include <Kernel/PCI/MMIOAccess.h>
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#include <LibBareMetal/IO.h>
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namespace Kernel {
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namespace PCI {
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static Initializer* s_pci_initializer;
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Initializer& Initializer::the()
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{
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if (s_pci_initializer == nullptr) {
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s_pci_initializer = new Initializer();
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}
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return *s_pci_initializer;
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}
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void Initializer::initialize_pci_mmio_access(PhysicalAddress mcfg)
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{
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MMIOAccess::initialize(mcfg);
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detect_devices();
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}
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void Initializer::initialize_pci_io_access()
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{
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IOAccess::initialize();
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detect_devices();
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}
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void Initializer::detect_devices()
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{
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enumerate_all([&](const Address& address, ID id) {
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klog() << "PCI: device @ " << String::format("%w", address.seg()) << ":" << String::format("%b", address.bus()) << ":" << String::format("%b", address.slot()) << "." << String::format("%d", address.function()) << " [" << String::format("%w", id.vendor_id) << ":" << String::format("%w", id.device_id) << "]";
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E1000NetworkAdapter::detect(address);
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RTL8139NetworkAdapter::detect(address);
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});
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}
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void Initializer::test_and_initialize(bool disable_pci_mmio)
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{
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if (disable_pci_mmio) {
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if (test_pci_io()) {
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initialize_pci_io_access();
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} else {
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klog() << "No PCI Bus Access Method Detected, Halt!";
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ASSERT_NOT_REACHED(); // NO PCI Access ?!
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}
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return;
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}
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if (test_acpi()) {
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if (test_pci_mmio()) {
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initialize_pci_mmio_access_after_test();
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} else {
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if (test_pci_io()) {
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initialize_pci_io_access();
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} else {
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klog() << "No PCI Bus Access Method Detected, Halt!";
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ASSERT_NOT_REACHED(); // NO PCI Access ?!
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}
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}
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} else {
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if (test_pci_io()) {
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initialize_pci_io_access();
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} else {
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klog() << "No PCI Bus Access Method Detected, Halt!";
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ASSERT_NOT_REACHED(); // NO PCI Access ?!
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}
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}
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}
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Initializer::Initializer()
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{
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}
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bool Initializer::test_acpi()
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{
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if ((kernel_command_line().contains("noacpi")) || !ACPI::Parser::the().is_operable())
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return false;
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else
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return true;
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}
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bool Initializer::test_pci_io()
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{
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klog() << "Testing PCI via manual probing... ";
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u32 tmp = 0x80000000;
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IO::out32(PCI_ADDRESS_PORT, tmp);
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tmp = IO::in32(PCI_ADDRESS_PORT);
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if (tmp == 0x80000000) {
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klog() << "PCI IO Supported!";
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return true;
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}
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klog() << "PCI IO Not Supported!";
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return false;
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}
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bool Initializer::test_pci_mmio()
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{
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return !ACPI::Parser::the().find_table("MCFG").is_null();
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}
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void Initializer::initialize_pci_mmio_access_after_test()
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{
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initialize_pci_mmio_access(ACPI::Parser::the().find_table("MCFG"));
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}
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void Initializer::dismiss()
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{
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if (s_pci_initializer == nullptr)
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return;
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klog() << "PCI Subsystem Initializer dismissed.";
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delete s_pci_initializer;
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s_pci_initializer = nullptr;
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}
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Initializer::~Initializer()
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{
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}
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}
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}
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