diff options
| author | Ido Schimmel <idosch@nvidia.com> | 2023-11-15 13:17:16 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-11-18 17:38:50 +0000 |
| commit | 3ed48c80b28d8dcd584d6ddaf00c75b7673e1a05 (patch) | |
| tree | d7dfc4143c42224825eddede221b104aac4abe15 /drivers/pci/quirks.c | |
| parent | 527a07e176eab0f61b1beec9e29b99c9a5ec219f (diff) | |
PCI: Add no PM reset quirk for NVIDIA Spectrum devices
Spectrum-{1,2,3,4} devices report that a D3hot->D0 transition causes a
reset (i.e., they advertise NoSoftRst-). However, this transition does
not have any effect on the device: It continues to be operational and
network ports remain up. Advertising this support makes it seem as if a
PM reset is viable for these devices. Mark it as unavailable to skip it
when testing reset methods.
Before:
# cat /sys/bus/pci/devices/0000\:03\:00.0/reset_method
pm bus
After:
# cat /sys/bus/pci/devices/0000\:03\:00.0/reset_method
bus
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/pci/quirks.c')
| -rw-r--r-- | drivers/pci/quirks.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index ea476252280a..d208047d1b8f 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -3787,6 +3787,19 @@ DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_ATI, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA, 8, quirk_no_pm_reset); /* + * Spectrum-{1,2,3,4} devices report that a D3hot->D0 transition causes a reset + * (i.e., they advertise NoSoftRst-). However, this transition does not have + * any effect on the device: It continues to be operational and network ports + * remain up. Advertising this support makes it seem as if a PM reset is viable + * for these devices. Mark it as unavailable to skip it when testing reset + * methods. + */ +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MELLANOX, 0xcb84, quirk_no_pm_reset); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MELLANOX, 0xcf6c, quirk_no_pm_reset); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MELLANOX, 0xcf70, quirk_no_pm_reset); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MELLANOX, 0xcf80, quirk_no_pm_reset); + +/* * Thunderbolt controllers with broken MSI hotplug signaling: * Entire 1st generation (Light Ridge, Eagle Ridge, Light Peak) and part * of the 2nd generation (Cactus Ridge 4C up to revision 1, Port Ridge). |