#!/bin/bash

# omarchy:summary=Detect whether the computer has an NVIDIA GPU with GSP firmware (Turing or newer).

# Turing is the first generation with GSP firmware, and the first to use device
# IDs at 0x1e00 or above; Maxwell, Pascal, and Volta all sit below that line.
#
# Read the cached sysfs IDs rather than lspci, which reads PCI config space and
# resumes runtime-suspended GPUs.
pci_devices_path="${OMARCHY_PCI_DEVICES_PATH:-/sys/bus/pci/devices}"

shopt -s nullglob

for device in "$pci_devices_path"/*; do
  [[ $(< "$device/vendor") == "0x10de" ]] || continue
  [[ $(< "$device/class") == 0x03* ]] || continue
  (( $(< "$device/device") >= 0x1e00 )) && exit 0
done

exit 1