1
0
Fork 0
mirror of https://git.rwth-aachen.de/acs/public/villas/node/ synced 2025-03-16 00:00:02 +01:00
VILLASnode/common/lib/kernel/devices/platform_device.cpp
Pascal Bauer 914ea0bac6 Refactor FPGA device and drivers
Signed-off-by: Pascal Bauer <pascal.bauer@rwth-aachen.de>
2024-10-31 12:18:20 +01:00

50 lines
1.7 KiB
C++

/* Platform bus based Linux/Unix device.
*
* Author: Pascal Bauer <pascal.bauer@rwth-aachen.de>
*
* SPDX-FileCopyrightText: 2023-2024 Pascal Bauer <pascal.bauer@rwth-aachen.de>
* SPDX-License-Identifier: Apache-2.0
*/
#include <villas/kernel/devices/linux_driver.hpp>
#include <villas/kernel/devices/platform_device.hpp>
#include <villas/utils.hpp>
using villas::kernel::devices::Driver, villas::kernel::devices::LinuxDriver;
using villas::kernel::devices::PlatformDevice;
using villas::utils::write_to_file;
std::optional<std::unique_ptr<Driver>> PlatformDevice::driver() const {
std::filesystem::path driver_symlink =
this->m_path / std::filesystem::path("driver");
if (!std::filesystem::is_symlink(driver_symlink))
return std::nullopt;
std::filesystem::path driver_path =
std::filesystem::canonical(driver_symlink);
return std::make_optional(std::make_unique<LinuxDriver>(driver_path));
}
std::optional<int> PlatformDevice::iommu_group() const {
std::filesystem::path symlink =
std::filesystem::path(this->m_path.u8string() + "/iommu_group");
std::filesystem::path link = std::filesystem::read_symlink(symlink);
std::string delimiter = "iommu_groups/";
int pos = link.u8string().find(delimiter);
int iommu_group = std::stoi(link.u8string().substr(pos + delimiter.length()));
return std::make_optional<int>(iommu_group);
}
std::filesystem::path PlatformDevice::path() const { return this->m_path; };
void PlatformDevice::probe() const {
write_to_file(this->name(), this->m_probe_path);
}
std::filesystem::path PlatformDevice::override_path() const {
return this->m_override_path;
}
std::string PlatformDevice::name() const { return this->m_path.filename(); }