diff options
| author | Bjorn Helgaas <bhelgaas@google.com> | 2023-11-10 15:43:15 -0600 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2023-12-15 17:26:21 -0600 |
| commit | 35259ff188e028b8fee8f1e973d0a7466df76d13 (patch) | |
| tree | 6ef9b4e313dbef7035a4e4fc31baa7e9662290c4 /drivers/pci/probe.c | |
| parent | b85ea95d086471afb4ad062012a4d73cd328fa86 (diff) | |
| download | linux-35259ff188e028b8fee8f1e973d0a7466df76d13.tar.gz | |
PCI: Log device type during enumeration
Log the device type when enumeration a device. Sample output changes:
- pci 0000:00:00.0: [8086:1237] type 00 class 0x060000
+ pci 0000:00:00.0: [8086:1237] type 00 class 0x060000 conventional PCI endpoint
- pci 0000:00:1c.0: [8086:a110] type 01 class 0x060400
+ pci 0000:00:1c.0: [8086:a110] type 01 class 0x060400 PCIe Root Port
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci/probe.c')
| -rw-r--r-- | drivers/pci/probe.c | 42 |
1 files changed, 40 insertions, 2 deletions
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index ed6b7f48736ad..6ee84dc939cab 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -1817,6 +1817,43 @@ static void early_dump_pci_device(struct pci_dev *pdev) value, 256, false); } +static const char *pci_type_str(struct pci_dev *dev) +{ + static const char * const str[] = { + "PCIe Endpoint", + "PCIe Legacy Endpoint", + "PCIe unknown", + "PCIe unknown", + "PCIe Root Port", + "PCIe Switch Upstream Port", + "PCIe Switch Downstream Port", + "PCIe to PCI/PCI-X bridge", + "PCI/PCI-X to PCIe bridge", + "PCIe Root Complex Integrated Endpoint", + "PCIe Root Complex Event Collector", + }; + int type; + + if (pci_is_pcie(dev)) { + type = pci_pcie_type(dev); + if (type < ARRAY_SIZE(str)) + return str[type]; + + return "PCIe unknown"; + } + + switch (dev->hdr_type) { + case PCI_HEADER_TYPE_NORMAL: + return "conventional PCI endpoint"; + case PCI_HEADER_TYPE_BRIDGE: + return "conventional PCI bridge"; + case PCI_HEADER_TYPE_CARDBUS: + return "CardBus bridge"; + default: + return "conventional PCI"; + } +} + /** * pci_setup_device - Fill in class and map information of a device * @dev: the device structure to fill @@ -1887,8 +1924,9 @@ int pci_setup_device(struct pci_dev *dev) pci_set_removable(dev); - pci_info(dev, "[%04x:%04x] type %02x class %#08x\n", - dev->vendor, dev->device, dev->hdr_type, dev->class); + pci_info(dev, "[%04x:%04x] type %02x class %#08x %s\n", + dev->vendor, dev->device, dev->hdr_type, dev->class, + pci_type_str(dev)); /* Device class may be changed after fixup */ class = dev->class >> 8; |