ladybird/Kernel/PCI/DeviceController.cpp
Liav A cf0a12c68f Kernel: Add various methods to handle interrupts in the PCI subsystem
For now, we only are able to enable or disable pin based interrupts.
Later, when implemented, we could utilize MSI & MSI-X interrupts.
2020-12-21 00:19:21 +01:00

82 lines
2.5 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/PCI/DeviceController.h>
namespace Kernel {
namespace PCI {
DeviceController::DeviceController(Address address)
: m_pci_address(address)
{
}
bool DeviceController::is_msi_capable() const
{
for (auto capability : PCI::get_physical_id(pci_address()).capabilities()) {
if (capability.m_id == 0x5)
return true;
}
return false;
}
bool DeviceController::is_msix_capable() const
{
for (auto capability : PCI::get_physical_id(pci_address()).capabilities()) {
if (capability.m_id == 0x11)
return true;
}
return false;
}
void DeviceController::enable_pin_based_interrupts() const
{
PCI::enable_interrupt_line(pci_address());
}
void DeviceController::disable_pin_based_interrupts() const
{
PCI::disable_interrupt_line(pci_address());
}
void DeviceController::enable_message_signalled_interrupts()
{
TODO();
}
void DeviceController::disable_message_signalled_interrupts()
{
TODO();
}
void DeviceController::enable_extended_message_signalled_interrupts()
{
TODO();
}
void DeviceController::disable_extended_message_signalled_interrupts()
{
TODO();
}
}
}