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https://github.com/fergalmoran/ladybird.git
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bf7ac06d7b
Implement enabling and disabling MSIx interrupts for a PCI device. Removes two TODO()s from PCI::Device.cpp :^)
65 lines
1.6 KiB
C++
65 lines
1.6 KiB
C++
/*
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* Copyright (c) 2020, Liav A. <liavalb@hotmail.co.il>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/AnyOf.h>
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#include <Kernel/Bus/PCI/API.h>
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#include <Kernel/Bus/PCI/Device.h>
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namespace Kernel::PCI {
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Device::Device(DeviceIdentifier const& pci_identifier)
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: m_pci_identifier(pci_identifier)
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{
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m_pci_identifier->initialize();
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}
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bool Device::is_msi_capable() const
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{
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return AK::any_of(
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m_pci_identifier->capabilities(),
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[](auto const& capability) { return capability.id().value() == PCI::Capabilities::ID::MSI; });
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}
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bool Device::is_msix_capable() const
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{
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return m_pci_identifier->is_msix_capable();
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}
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void Device::enable_pin_based_interrupts() const
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{
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PCI::enable_interrupt_line(m_pci_identifier);
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}
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void Device::disable_pin_based_interrupts() const
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{
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PCI::disable_interrupt_line(m_pci_identifier);
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}
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void Device::enable_message_signalled_interrupts()
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{
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TODO();
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}
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void Device::disable_message_signalled_interrupts()
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{
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TODO();
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}
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void Device::enable_extended_message_signalled_interrupts()
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{
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for (auto& capability : m_pci_identifier->capabilities()) {
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if (capability.id().value() == PCI::Capabilities::ID::MSIX)
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capability.write16(msi_control_offset, capability.read16(msi_control_offset) | msix_control_enable);
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}
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}
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void Device::disable_extended_message_signalled_interrupts()
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{
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for (auto& capability : m_pci_identifier->capabilities()) {
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if (capability.id().value() == PCI::Capabilities::ID::MSIX)
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capability.write16(msi_control_offset, capability.read16(msi_control_offset) & ~(msix_control_enable));
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}
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}
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}
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