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| author | Alexandru Gagniuc <mr.nuke.me@gmail.com> | 2019-03-15 14:29:40 -0500 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2019-04-23 16:38:16 -0500 |
| commit | ba11edc65065ffe38508aa76fdf7a7db15ad8161 (patch) | |
| tree | ffa0370f786434e9ea208fac31d38fec133e5766 /drivers/acpi | |
| parent | f873c51a155aaa6dafdc00fa7fda3754f2f9f794 (diff) | |
| download | linux-ba11edc65065ffe38508aa76fdf7a7db15ad8161.tar.bz2 | |
PCI/ACPI: Advertise _HPX Type 3 support via _OSC
_OSC now has a way to inform firmware that OS has the capability to
interpret _HPX Type 3 setting records. This was added by the following
PCI Firmware Specification ECN:
ECN: _HPX and PCIe Completion Timeout related _OSC Enhancements
Date: September 12, 2018
Affected Document: PCI Firmware Specification, Rev. 3.2
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/pci_root.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index 707aafc7c2aa..c36781a9b493 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -145,6 +145,7 @@ static struct pci_osc_bit_struct pci_osc_support_bit[] = { { OSC_PCI_CLOCK_PM_SUPPORT, "ClockPM" }, { OSC_PCI_SEGMENT_GROUPS_SUPPORT, "Segments" }, { OSC_PCI_MSI_SUPPORT, "MSI" }, + { OSC_PCI_HPX_TYPE_3_SUPPORT, "HPX-Type3" }, }; static struct pci_osc_bit_struct pci_osc_control_bit[] = { @@ -446,6 +447,7 @@ static void negotiate_os_control(struct acpi_pci_root *root, int *no_aspm, * PCI domains, so we indicate this in _OSC support capabilities. */ support = OSC_PCI_SEGMENT_GROUPS_SUPPORT; + support |= OSC_PCI_HPX_TYPE_3_SUPPORT; if (pci_ext_cfg_avail()) support |= OSC_PCI_EXT_CONFIG_SUPPORT; if (pcie_aspm_support_enabled()) |