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PCI: Mark some NVIDIA GPUs to avoid bus reset

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commit 4c207e7121fa92b66bf1896bf8ccb9edfb0f9731 upstream.

Some NVIDIA GPU devices do not work with SBR.  Triggering SBR leaves the
device inoperable for the current system boot. It requires a system
hard-reboot to get the GPU device back to normal operating condition
post-SBR. For the affected devices, enable NO_BUS_RESET quirk to avoid the
issue.

This issue will be fixed in the next generation of hardware.

Link: https://lore.kernel.org/r/20210608054857.18963-8-ameynarkhede03@gmail.com
Signed-off-by: Shanker Donthineni <sdonthineni@nvidia.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Sinan Kaya <okaya@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Shanker Donthineni 2021-06-08 11:18:56 +05:30 committed by Greg Kroah-Hartman
parent 775c25b7a3
commit f3b600a2b6
1 changed files with 12 additions and 0 deletions
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12
drivers/pci/quirks.c
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@ -3557,6 +3557,18 @@ static void quirk_no_bus_reset(struct pci_dev *dev)
dev->dev_flags |= PCI_DEV_FLAGS_NO_BUS_RESET;
}
/*
* Some NVIDIA GPU devices do not work with bus reset, SBR needs to be
* prevented for those affected devices.
*/
static void quirk_nvidia_no_bus_reset(struct pci_dev *dev)
{
if ((dev->device & 0xffc0) == 0x2340)
quirk_no_bus_reset(dev);
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
quirk_nvidia_no_bus_reset);
/*
* Some Atheros AR9xxx and QCA988x chips do not behave after a bus reset.
* The device will throw a Link Down error on AER-capable systems and