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e5ffa960d7
The new PCI subsystem is initialized during runtime. PCI::Initializer is supposed to be called during early boot, to perform a few tests, and initialize the proper configuration space access mechanism. Kernel boot parameters can be specified by a user to determine what tests will occur, to aid debugging on problematic machines. After that, PCI::Initializer should be dismissed. PCI::IOAccess is a class that is derived from PCI::Access class and implements PCI configuration space access mechanism via x86 IO ports. PCI::MMIOAccess is a class that is derived from PCI::Access and implements PCI configurtaion space access mechanism via memory access. The new PCI subsystem also supports determination of IO/MMIO space needed by a device by checking a given BAR. In addition, Every device or component that use the PCI subsystem has changed to match the last changes.
59 lines
1.9 KiB
C++
59 lines
1.9 KiB
C++
#include <AK/String.h>
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#include <AK/JsonArray.h>
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#include <AK/JsonObject.h>
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#include <LibCore/CFile.h>
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#include <LibPCIDB/Database.h>
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#include <stdio.h>
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int main(int argc, char** argv)
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{
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UNUSED_PARAM(argc);
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UNUSED_PARAM(argv);
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auto db = PCIDB::Database::open();
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if (!db)
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fprintf(stderr, "Couldn't open PCI ID database\n");
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auto proc_pci = CFile::construct("/proc/pci");
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if (!proc_pci->open(CIODevice::ReadOnly)) {
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fprintf(stderr, "Error: %s\n", proc_pci->error_string());
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return 1;
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}
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auto file_contents = proc_pci->read_all();
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auto json = JsonValue::from_string(file_contents).as_array();
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json.for_each([db](auto& value) {
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auto dev = value.as_object();
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auto seg = dev.get("seg").to_u32();
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auto bus = dev.get("bus").to_u32();
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auto slot = dev.get("slot").to_u32();
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auto function = dev.get("function").to_u32();
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auto vendor_id = dev.get("vendor_id").to_u32();
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auto device_id = dev.get("device_id").to_u32();
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auto revision_id = dev.get("revision_id").to_u32();
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auto class_id = dev.get("class").to_u32();
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String vendor_name = String::format("%02x", vendor_id);
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auto vendor = db->get_vendor(vendor_id);
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if (vendor != "")
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vendor_name = vendor;
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String device_name = String::format("%02x", device_id);
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auto device = db->get_device(vendor_id, device_id);
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if (device != "")
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device_name = device;
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String class_name = String::format("%04x", class_id);
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auto class_ptr = db->get_class(class_id);
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if (class_ptr != "")
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class_name = class_ptr;
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printf("%04x:%02x:%02x.%d %s: %s %s (rev %02x)\n",
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seg, bus, slot, function,
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class_name.characters(), vendor_name.characters(),
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device_name.characters(), revision_id);
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});
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return 0;
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}
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