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Subject[PATCH 3/6] pci: add PCI quirk cmdmem fixup for Intel DSA device
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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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