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| author |   Bjorn Helgaas <bhelgaas@google.com> | 2020-04-02 14:26:32 -0500 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2020-04-02 14:26:32 -0500 |
| commit | eb81b249ba059443916d6cc0cfa3e1987aa938d9 (patch) | |
| tree | a82772f09a64050df12471ade29b8e7449a502ed /drivers/pci/pci.c | |
| parent | Merge branch 'pci/edr' (diff) | |
| parent | PCI: Add PCIE_LNKCAP2_SLS2SPEED() macro (diff) | |
| download | wireguard-linux-eb81b249ba059443916d6cc0cfa3e1987aa938d9.tar.xz wireguard-linux-eb81b249ba059443916d6cc0cfa3e1987aa938d9.zip | |
Merge branch 'pci/enumeration'
- Add PCIe 32 GT/s speed decoding for sysfs "max_link_speed" and dmesg
notes about available bandwidth (Yicong Yang)
- Simplify and unify PCI bus/link speed reporting (Yicong Yang)
* pci/enumeration:
PCI: Add PCIE_LNKCAP2_SLS2SPEED() macro
PCI: Use pci_speed_string() for all PCI/PCI-X/PCIe strings
PCI: Add pci_speed_string()
PCI: Add 32 GT/s decoding in some macros
Diffstat (limited to 'drivers/pci/pci.c')
| -rw-r--r-- | drivers/pci/pci.c | 23 |
1 files changed, 7 insertions, 16 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 6c6e8c73fd8f..4aa46c7b0148 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -5784,19 +5784,10 @@ enum pci_bus_speed pcie_get_speed_cap(struct pci_dev *dev) * where only 2.5 GT/s and 5.0 GT/s speeds were defined. */ pcie_capability_read_dword(dev, PCI_EXP_LNKCAP2, &lnkcap2); - if (lnkcap2) { /* PCIe r3.0-compliant */ - if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_32_0GB) - return PCIE_SPEED_32_0GT; - else if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_16_0GB) - return PCIE_SPEED_16_0GT; - else if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_8_0GB) - return PCIE_SPEED_8_0GT; - else if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_5_0GB) - return PCIE_SPEED_5_0GT; - else if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_2_5GB) - return PCIE_SPEED_2_5GT; - return PCI_SPEED_UNKNOWN; - } + + /* PCIe r3.0-compliant */ + if (lnkcap2) + return PCIE_LNKCAP2_SLS2SPEED(lnkcap2); pcie_capability_read_dword(dev, PCI_EXP_LNKCAP, &lnkcap); if ((lnkcap & PCI_EXP_LNKCAP_SLS) == PCI_EXP_LNKCAP_SLS_5_0GB) @@ -5872,14 +5863,14 @@ void __pcie_print_link_status(struct pci_dev *dev, bool verbose) if (bw_avail >= bw_cap && verbose) pci_info(dev, "%u.%03u Gb/s available PCIe bandwidth (%s x%d link)\n", bw_cap / 1000, bw_cap % 1000, - PCIE_SPEED2STR(speed_cap), width_cap); + pci_speed_string(speed_cap), width_cap); else if (bw_avail < bw_cap) pci_info(dev, "%u.%03u Gb/s available PCIe bandwidth, limited by %s x%d link at %s (capable of %u.%03u Gb/s with %s x%d link)\n", bw_avail / 1000, bw_avail % 1000, - PCIE_SPEED2STR(speed), width, + pci_speed_string(speed), width, limiting_dev ? pci_name(limiting_dev) : "<unknown>", bw_cap / 1000, bw_cap % 1000, - PCIE_SPEED2STR(speed_cap), width_cap); + pci_speed_string(speed_cap), width_cap); } /** |