diff options
Diffstat (limited to 'drivers/pci/probe.c')
| -rw-r--r-- | drivers/pci/probe.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index dd64310a735e..51cf8982fec7 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -387,10 +387,37 @@ static struct pci_bus * pci_alloc_bus(void) INIT_LIST_HEAD(&b->children); INIT_LIST_HEAD(&b->devices); INIT_LIST_HEAD(&b->slots); + b->max_bus_speed = PCI_SPEED_UNKNOWN; + b->cur_bus_speed = PCI_SPEED_UNKNOWN; } return b; } +static unsigned char pcie_link_speed[] = { + PCI_SPEED_UNKNOWN, /* 0 */ + PCIE_SPEED_2_5GT, /* 1 */ + PCIE_SPEED_5_0GT, /* 2 */ + PCI_SPEED_UNKNOWN, /* 3 */ + PCI_SPEED_UNKNOWN, /* 4 */ + PCI_SPEED_UNKNOWN, /* 5 */ + PCI_SPEED_UNKNOWN, /* 6 */ + PCI_SPEED_UNKNOWN, /* 7 */ + PCI_SPEED_UNKNOWN, /* 8 */ + PCI_SPEED_UNKNOWN, /* 9 */ + PCI_SPEED_UNKNOWN, /* A */ + PCI_SPEED_UNKNOWN, /* B */ + PCI_SPEED_UNKNOWN, /* C */ + PCI_SPEED_UNKNOWN, /* D */ + PCI_SPEED_UNKNOWN, /* E */ + PCI_SPEED_UNKNOWN /* F */ +}; + +void pcie_update_link_speed(struct pci_bus *bus, u16 linksta) +{ + bus->cur_bus_speed = pcie_link_speed[linksta & 0xf]; +} +EXPORT_SYMBOL_GPL(pcie_update_link_speed); + static struct pci_bus *pci_alloc_child_bus(struct pci_bus *parent, struct pci_dev *bridge, int busnr) { |