Messages in this thread Patch in this message | | | Subject | [PATCH 3/6] pci: add PCI quirk cmdmem fixup for Intel DSA device | From | Dave Jiang <> | Date | Mon, 30 Mar 2020 14:27:06 -0700 |
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Since there is no standard way that defines a PCI device that receives descriptors or commands with synchronous write operations, add quirk to set cmdmem for the Intel accelerator device that supports it.
Signed-off-by: Dave Jiang <dave.jiang@intel.com> --- drivers/pci/quirks.c | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 29f473ebf20f..ba0572b9b9c8 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -5461,3 +5461,14 @@ static void quirk_reset_lenovo_thinkpad_p50_nvgpu(struct pci_dev *pdev) DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, 0x13b1, PCI_CLASS_DISPLAY_VGA, 8, quirk_reset_lenovo_thinkpad_p50_nvgpu); + +/* + * Until the PCI Sig defines a standard capaiblity check that indicates a + * device has cmdmem with synchronous write capability, we'll add a quirk + * for device that supports it. + */ +static void device_cmdmem_fixup(struct pci_dev *pdev) +{ + pdev->cmdmem = 1; +} +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x0b25, device_cmdmem_fixup);
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