PCIR_MINGNT
pci_write_config(dev, PCIR_MINGNT, 0x14, 1);
pci_write_config(dev, PCIR_MINGNT, dinfo->cfg.mingnt, 1);
dinfo->cfg.mingnt = pci_read_config(dev, PCIR_MINGNT, 1);
cfg->mingnt = REG(PCIR_MINGNT, 1);