[PATCH] vfio/nvgrace-gpu: add GB10 device ID (0x2e12)

[Eric Curtin]

The NVIDIA GB10 GPU (device ID 0x2e12, found in DGX GB10 systems) is a
Grace-Blackwell chip that shares the same NVLink-C2C coherent memory
architecture as the existing GH200/GB200/GB300 entries.  It exposes
CPU-coherent device memory via the ACPI DSD properties
nvidia,gpu-mem-base-pa / nvidia,gpu-mem-size and requires the same
specialised BAR emulation provided by nvgrace-gpu-vfio-pci.

Without this entry the device falls through to the generic vfio-pci
driver, which fails the iommufd IOMMU_RESV_DIRECT check because the
NVLink-C2C memory apertures appear as RESV_DIRECT in the IOMMU group
reserved regions, yielding:

  vfio-pci 000f:01:00.0: Firmware has requested this device have a
  1:1 IOMMU mapping, rejecting configuring the device without a 1:1
  mapping.  Contact your platform vendor.

Tested on a DGX GB10 system (aarch64, kernel 6.17.0-1014-nvidia).

Signed-off-by: Eric Curtin <ericcurtin17@xxxxxxxxx>
---
 drivers/vfio/pci/nvgrace-gpu/main.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/vfio/pci/nvgrace-gpu/main.c b/drivers/vfio/pci/nvgrace-gpu/main.c
index fa056b69f899..ac1acf41df86 100644
--- a/drivers/vfio/pci/nvgrace-gpu/main.c
+++ b/drivers/vfio/pci/nvgrace-gpu/main.c
@@ -1244,6 +1244,8 @@ static const struct pci_device_id nvgrace_gpu_vfio_pci_table[] = {
 	{ PCI_DRIVER_OVERRIDE_DEVICE_VFIO(PCI_VENDOR_ID_NVIDIA, 0x2941) },
 	/* GB300 SKU */
 	{ PCI_DRIVER_OVERRIDE_DEVICE_VFIO(PCI_VENDOR_ID_NVIDIA, 0x31C2) },
+	/* GB10 SKU */
+	{ PCI_DRIVER_OVERRIDE_DEVICE_VFIO(PCI_VENDOR_ID_NVIDIA, 0x2E12) },
 	{}
 };
 
-- 
2.43.0