mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-22 23:50:19 +00:00
93 lines
4 KiB
C++
93 lines
4 KiB
C++
/*
|
|
* Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <Kernel/Bus/PCI/API.h>
|
|
#include <Kernel/Bus/PCI/Access.h>
|
|
#include <Kernel/Bus/PCI/SysFSPCI.h>
|
|
#include <Kernel/Debug.h>
|
|
#include <Kernel/Sections.h>
|
|
|
|
namespace Kernel::PCI {
|
|
|
|
UNMAP_AFTER_INIT NonnullRefPtr<PCIDeviceSysFSDirectory> PCIDeviceSysFSDirectory::create(const SysFSDirectory& parent_directory, Address address)
|
|
{
|
|
return adopt_ref(*new (nothrow) PCIDeviceSysFSDirectory(parent_directory, address));
|
|
}
|
|
|
|
UNMAP_AFTER_INIT PCIDeviceSysFSDirectory::PCIDeviceSysFSDirectory(const SysFSDirectory& parent_directory, Address address)
|
|
: SysFSDirectory(String::formatted("{:04x}:{:02x}:{:02x}.{}", address.domain(), address.bus(), address.device(), address.function()), parent_directory)
|
|
, m_address(address)
|
|
{
|
|
m_components.append(PCIDeviceAttributeSysFSComponent::create("vendor", *this, PCI::RegisterOffset::VENDOR_ID, 2));
|
|
m_components.append(PCIDeviceAttributeSysFSComponent::create("device_id", *this, PCI::RegisterOffset::DEVICE_ID, 2));
|
|
m_components.append(PCIDeviceAttributeSysFSComponent::create("class", *this, PCI::RegisterOffset::CLASS, 1));
|
|
m_components.append(PCIDeviceAttributeSysFSComponent::create("subclass", *this, PCI::RegisterOffset::SUBCLASS, 1));
|
|
m_components.append(PCIDeviceAttributeSysFSComponent::create("revision", *this, PCI::RegisterOffset::REVISION_ID, 1));
|
|
m_components.append(PCIDeviceAttributeSysFSComponent::create("progif", *this, PCI::RegisterOffset::PROG_IF, 1));
|
|
m_components.append(PCIDeviceAttributeSysFSComponent::create("subsystem_vendor", *this, PCI::RegisterOffset::SUBSYSTEM_VENDOR_ID, 2));
|
|
m_components.append(PCIDeviceAttributeSysFSComponent::create("subsystem_id", *this, PCI::RegisterOffset::SUBSYSTEM_ID, 2));
|
|
}
|
|
|
|
UNMAP_AFTER_INIT void PCIBusSysFSDirectory::initialize()
|
|
{
|
|
auto pci_directory = adopt_ref(*new (nothrow) PCIBusSysFSDirectory());
|
|
SysFSComponentRegistry::the().register_new_bus_directory(pci_directory);
|
|
}
|
|
|
|
UNMAP_AFTER_INIT PCIBusSysFSDirectory::PCIBusSysFSDirectory()
|
|
: SysFSDirectory("pci", SysFSComponentRegistry::the().buses_directory())
|
|
{
|
|
PCI::enumerate([&](DeviceIdentifier const& device_identifier) {
|
|
auto pci_device = PCI::PCIDeviceSysFSDirectory::create(*this, device_identifier.address());
|
|
m_components.append(pci_device);
|
|
});
|
|
}
|
|
|
|
NonnullRefPtr<PCIDeviceAttributeSysFSComponent> PCIDeviceAttributeSysFSComponent::create(String name, const PCIDeviceSysFSDirectory& device, PCI::RegisterOffset offset, size_t field_bytes_width)
|
|
{
|
|
return adopt_ref(*new (nothrow) PCIDeviceAttributeSysFSComponent(name, device, offset, field_bytes_width));
|
|
}
|
|
|
|
PCIDeviceAttributeSysFSComponent::PCIDeviceAttributeSysFSComponent(String name, const PCIDeviceSysFSDirectory& device, PCI::RegisterOffset offset, size_t field_bytes_width)
|
|
: SysFSComponent(name)
|
|
, m_device(device)
|
|
, m_offset(offset)
|
|
, m_field_bytes_width(field_bytes_width)
|
|
{
|
|
}
|
|
|
|
KResultOr<size_t> PCIDeviceAttributeSysFSComponent::read_bytes(off_t offset, size_t count, UserOrKernelBuffer& buffer, OpenFileDescription*) const
|
|
{
|
|
auto blob = TRY(try_to_generate_buffer());
|
|
|
|
if ((size_t)offset >= blob->size())
|
|
return KSuccess;
|
|
|
|
ssize_t nread = min(static_cast<off_t>(blob->size() - offset), static_cast<off_t>(count));
|
|
TRY(buffer.write(blob->data() + offset, nread));
|
|
return nread;
|
|
}
|
|
|
|
KResultOr<NonnullOwnPtr<KBuffer>> PCIDeviceAttributeSysFSComponent::try_to_generate_buffer() const
|
|
{
|
|
String value;
|
|
switch (m_field_bytes_width) {
|
|
case 1:
|
|
value = String::formatted("{:#x}", PCI::read8(m_device->address(), m_offset));
|
|
break;
|
|
case 2:
|
|
value = String::formatted("{:#x}", PCI::read16(m_device->address(), m_offset));
|
|
break;
|
|
case 4:
|
|
value = String::formatted("{:#x}", PCI::read32(m_device->address(), m_offset));
|
|
break;
|
|
default:
|
|
VERIFY_NOT_REACHED();
|
|
}
|
|
|
|
return KBuffer::try_create_with_bytes(value.substring_view(0).bytes());
|
|
}
|
|
}
|