diff options
Diffstat (limited to 'drivers/pci/probe.c')
| -rw-r--r-- | drivers/pci/probe.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index f67c007edcae..77b8a145c39b 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -641,6 +641,7 @@ void pci_free_host_bridge(struct pci_host_bridge *bridge) } EXPORT_SYMBOL(pci_free_host_bridge); +/* Indexed by PCI_X_SSTATUS_FREQ (secondary bus mode and frequency) */ static const unsigned char pcix_bus_speed[] = { PCI_SPEED_UNKNOWN, /* 0 */ PCI_SPEED_66MHz_PCIX, /* 1 */ @@ -660,6 +661,7 @@ static const unsigned char pcix_bus_speed[] = { PCI_SPEED_133MHz_PCIX_533 /* F */ }; +/* Indexed by PCI_EXP_LNKCAP_SLS, PCI_EXP_LNKSTA_CLS */ const unsigned char pcie_link_speed[] = { PCI_SPEED_UNKNOWN, /* 0 */ PCIE_SPEED_2_5GT, /* 1 */ @@ -678,6 +680,44 @@ const unsigned char pcie_link_speed[] = { PCI_SPEED_UNKNOWN, /* E */ PCI_SPEED_UNKNOWN /* F */ }; +EXPORT_SYMBOL_GPL(pcie_link_speed); + +const char *pci_speed_string(enum pci_bus_speed speed) +{ + /* Indexed by the pci_bus_speed enum */ + static const char *speed_strings[] = { + "33 MHz PCI", /* 0x00 */ + "66 MHz PCI", /* 0x01 */ + "66 MHz PCI-X", /* 0x02 */ + "100 MHz PCI-X", /* 0x03 */ + "133 MHz PCI-X", /* 0x04 */ + NULL, /* 0x05 */ + NULL, /* 0x06 */ + NULL, /* 0x07 */ + NULL, /* 0x08 */ + "66 MHz PCI-X 266", /* 0x09 */ + "100 MHz PCI-X 266", /* 0x0a */ + "133 MHz PCI-X 266", /* 0x0b */ + "Unknown AGP", /* 0x0c */ + "1x AGP", /* 0x0d */ + "2x AGP", /* 0x0e */ + "4x AGP", /* 0x0f */ + "8x AGP", /* 0x10 */ + "66 MHz PCI-X 533", /* 0x11 */ + "100 MHz PCI-X 533", /* 0x12 */ + "133 MHz PCI-X 533", /* 0x13 */ + "2.5 GT/s PCIe", /* 0x14 */ + "5.0 GT/s PCIe", /* 0x15 */ + "8.0 GT/s PCIe", /* 0x16 */ + "16.0 GT/s PCIe", /* 0x17 */ + "32.0 GT/s PCIe", /* 0x18 */ + }; + + if (speed < ARRAY_SIZE(speed_strings)) + return speed_strings[speed]; + return "Unknown"; +} +EXPORT_SYMBOL_GPL(pci_speed_string); void pcie_update_link_speed(struct pci_bus *bus, u16 linksta) { |