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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/ByteBuffer.h>
#include <AK/JsonArray.h>
#include <AK/JsonObject.h>
#include <AK/String.h>
#include <LibCore/ArgsParser.h>
#include <LibCore/File.h>
#include <LibPCIDB/Database.h>
#include <stdio.h>
#include <unistd.h>
static bool flag_show_numerical = false;
static const char* format_numerical = "{:04x}:{:02x}:{:02x}.{} {}: {}:{} (rev {:02x})";
static const char* format_textual = "{:04x}:{:02x}:{:02x}.{} {}: {} {} (rev {:02x})";
int main(int argc, char** argv)
{
if (pledge("stdio rpath", nullptr) < 0) {
perror("pledge");
return 1;
}
if (unveil("/res/pci.ids", "r") < 0) {
perror("unveil");
return 1;
}
if (unveil("/proc/pci", "r") < 0) {
perror("unveil");
return 1;
}
unveil(nullptr, nullptr);
Core::ArgsParser args_parser;
args_parser.set_general_help("List PCI devices.");
args_parser.add_option(flag_show_numerical, "Show numerical IDs", "numerical", 'n');
args_parser.parse(argc, argv);
const char* format = flag_show_numerical ? format_numerical : format_textual;
RefPtr<PCIDB::Database> db;
if (!flag_show_numerical) {
db = PCIDB::Database::open();
if (!db) {
warnln("Couldn't open PCI ID database");
flag_show_numerical = true;
}
}
auto proc_pci = Core::File::construct("/proc/pci");
if (!proc_pci->open(Core::OpenMode::ReadOnly)) {
warnln("Failed to open {}: {}", proc_pci->name(), proc_pci->error_string());
return 1;
}
if (pledge("stdio", nullptr) < 0) {
perror("pledge");
return 1;
}
auto file_contents = proc_pci->read_all();
auto json = JsonValue::from_string(file_contents);
VERIFY(json.has_value());
json.value().as_array().for_each([db, format](auto& value) {
auto& dev = value.as_object();
auto domain = dev.get("domain").to_u32();
auto bus = dev.get("bus").to_u32();
auto device = dev.get("device").to_u32();
auto function = dev.get("function").to_u32();
auto vendor_id = dev.get("vendor_id").to_u32();
auto device_id = dev.get("device_id").to_u32();
auto revision_id = dev.get("revision_id").to_u32();
auto class_id = dev.get("class").to_u32();
auto subclass_id = dev.get("subclass").to_u32();
String vendor_name;
String device_name;
String class_name;
if (db) {
vendor_name = db->get_vendor(vendor_id);
device_name = db->get_device(vendor_id, device_id);
class_name = db->get_class(class_id);
}
if (vendor_name.is_empty())
vendor_name = String::formatted("{:04x}", vendor_id);
if (device_name.is_empty())
device_name = String::formatted("{:04x}", device_id);
if (class_name.is_empty())
class_name = String::formatted("{:02x}{:02x}", class_id, subclass_id);
outln(format, domain, bus, device, function, class_name, vendor_name, device_name, revision_id);
});
return 0;
}
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