PCI_REBAR_CTRL_BAR_IDX
bar = FIELD_GET(PCI_REBAR_CTRL_BAR_IDX, val);
bar_index = FIELD_GET(PCI_REBAR_CTRL_BAR_IDX, reg);
bar_idx = ctrl & PCI_REBAR_CTRL_BAR_IDX;
bar_idx = FIELD_GET(PCI_REBAR_CTRL_BAR_IDX, ctrl);
#define PCI_VF_REBAR_CTRL_BAR_IDX PCI_REBAR_CTRL_BAR_IDX