Neophyte questions about PCIe

[Mason]

On 10/03/2017 18:49, Mason wrote:

> /* Root complex reports incorrect device class */
> static void tango_pcie_fixup_class(struct pci_dev *dev)
> {
> 	dev->class = PCI_CLASS_BRIDGE_PCI << 8;
> }

Gen1 controller reports class/rev = 0x04800001
Gen2 controller reports class/rev = 0x06000001

#define PCI_CLASS_BRIDGE_HOST		0x0600
#define PCI_CLASS_BRIDGE_ISA		0x0601
#define PCI_CLASS_BRIDGE_EISA		0x0602
#define PCI_CLASS_BRIDGE_MC		0x0603
#define PCI_CLASS_BRIDGE_PCI		0x0604
#define PCI_CLASS_BRIDGE_PCMCIA		0x0605
#define PCI_CLASS_BRIDGE_NUBUS		0x0606
#define PCI_CLASS_BRIDGE_CARDBUS	0x0607
#define PCI_CLASS_BRIDGE_RACEWAY	0x0608
#define PCI_CLASS_BRIDGE_OTHER		0x0680

My fixup replaces 0x048000 with 0x060400.

	0x060400 != 0x060000

Which is correct:
PCI_CLASS_BRIDGE_HOST or PCI_CLASS_BRIDGE_PCI?

Naively, I would expect Host/PCI bridge to be more correct
for a root complex.

Regards.