RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-25 06:07:34 +00:00
Code Issues Activity Actions

Utilities/lspci: Add verbose flag to show data about PCI BARs

Browse source 
Use the exposed sysfs interface and print the addresses to the user if
requested to.
This commit is contained in:
Liav A 2022-02-10 15:15:56 +02:00 • committed by Andreas Kling
parent f8df21c7e7
commit bd48e73851
1 changed files with 18 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

18
Userland/Utilities/lspci.cpp
View file

@ -17,9 +17,11 @@
#include <LibPCIDB/Database.h> #include <LibPCIDB/Database.h>
static bool flag_show_numerical = false; static bool flag_show_numerical = false;
static bool flag_verbose = false;
static const char* format_numerical = "{:04x}:{:02x}:{:02x}.{} {}: {}:{} (rev {:02x})"; static const char* format_numerical = "{:04x}:{:02x}:{:02x}.{} {}: {}:{} (rev {:02x})";
static const char* format_textual = "{:04x}:{:02x}:{:02x}.{} {}: {} {} (rev {:02x})"; static const char* format_textual = "{:04x}:{:02x}:{:02x}.{} {}: {} {} (rev {:02x})";
static const char* format_region = "\tBAR {}: {} region @ {:#x}";
static u32 read_hex_string_from_bytebuffer(ByteBuffer const& buf) static u32 read_hex_string_from_bytebuffer(ByteBuffer const& buf)
{ {
@ -45,6 +47,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
Core::ArgsParser args_parser; Core::ArgsParser args_parser;
args_parser.set_general_help("List PCI devices."); args_parser.set_general_help("List PCI devices.");
args_parser.add_option(flag_show_numerical, "Show numerical IDs", "numerical", 'n'); args_parser.add_option(flag_show_numerical, "Show numerical IDs", "numerical", 'n');
args_parser.add_option(flag_verbose, "Show verbose info on devices", "verbose", 'v');
args_parser.parse(arguments); args_parser.parse(arguments);
const char* format = flag_show_numerical ? format_numerical : format_textual; const char* format = flag_show_numerical ? format_numerical : format_textual;
@ -128,6 +131,21 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
class_name = String::formatted("{:02x}{:02x}", class_id, subclass_id); class_name = String::formatted("{:02x}{:02x}", class_id, subclass_id);
outln(format, domain, bus, device, function, class_name, vendor_name, device_name, revision_id); outln(format, domain, bus, device, function, class_name, vendor_name, device_name, revision_id);
if (!flag_verbose)
continue;
for (size_t bar_index = 0; bar_index <= 5; bar_index++) {
auto bar_value_file = Core::File::construct(String::formatted("/sys/bus/pci/{}/bar{}", dir, bar_index));
if (!bar_value_file->open(Core::OpenMode::ReadOnly)) {
dbgln("Error: Could not open {}: {}", bar_value_file->name(), bar_value_file->error_string());
continue;
}
u32 bar_value = read_hex_string_from_bytebuffer(bar_value_file->read_all());
if (bar_value == 0)
continue;
bool memory_region = ((bar_value & 1) == 0);
outln(format_region, bar_index, memory_region ? "Memory" : "IO", bar_value);
}
} }
return 0; return 0;