[v0.10] Replace nvml by pciutils to get pci ids. Needs work to integrate it properly. NVML is enough in the case of NVIDIA GPUs, but because more GPUs will be added in the future, a solution like pciutils is needed

src/common/pci.cpp

@@ -0,0 +1,37 @@
+#include "pci.hpp"
+#include <cstddef>
+
+/*
+ * doc: https://wiki.osdev.org/PCI#Class_Codes
+ *      https://pci-ids.ucw.cz/read/PC
+ */
+#define VENDOR_ID_NVIDIA 0x10de
+#define CLASS_VGA_CONTROLLER 0x0300
+
+uint16_t pciutils_get_pci_vendor_id(struct pci_dev *devices) {
+  for(struct pci_dev *dev=devices; dev != NULL; dev=dev->next) {
+    if(dev->vendor_id == VENDOR_ID_NVIDIA && dev->device_class == CLASS_VGA_CONTROLLER) {
+      return dev->vendor_id;
+    }
+  }
+  return 0;
+}
+
+uint16_t pciutils_get_pci_device_id(struct pci_dev *devices) {
+  for(struct pci_dev *dev=devices; dev != NULL; dev=dev->next) {
+   if(dev->vendor_id == VENDOR_ID_NVIDIA && dev->device_class == CLASS_VGA_CONTROLLER) {
+      return dev->device_id;
+    }
+  }
+  return 0;
+}
+
+struct pci_dev *get_pci_devices_from_pciutils() {
+  struct pci_access *pacc;
+
+  pacc = pci_alloc();
+  pci_init(pacc);
+  pci_scan_bus(pacc);
+
+  return pacc->devices;
+}