return r;
}
+/**
+ * amdgpu_device_partner_bandwidth - find the bandwidth of appropriate partner
+ *
+ * @adev: amdgpu_device pointer
+ * @speed: pointer to the speed of the link
+ * @width: pointer to the width of the link
+ *
+ * Evaluate the hierarchy to find the speed and bandwidth capabilities of the
+ * first physical partner to an AMD dGPU.
+ * This will exclude any virtual switches and links.
+ */
+static void amdgpu_device_partner_bandwidth(struct amdgpu_device *adev,
+ enum pci_bus_speed *speed,
+ enum pcie_link_width *width)
+{
+ struct pci_dev *parent = adev->pdev;
+
+ if (!speed || !width)
+ return;
+
+ *speed = PCI_SPEED_UNKNOWN;
+ *width = PCIE_LNK_WIDTH_UNKNOWN;
+
+ while ((parent = pci_upstream_bridge(parent))) {
+ /* skip upstream/downstream switches internal to dGPU*/
+ if (parent->vendor == PCI_VENDOR_ID_ATI)
+ continue;
+ *speed = pcie_get_speed_cap(parent);
+ *width = pcie_get_width_cap(parent);
+ break;
+ }
+}
+
/**
* amdgpu_device_get_pcie_info - fence pcie info about the PCIE slot
*
if (adev->pm.pcie_gen_mask && adev->pm.pcie_mlw_mask)
return;
- pcie_bandwidth_available(adev->pdev, NULL,
- &platform_speed_cap, &platform_link_width);
+ amdgpu_device_partner_bandwidth(adev, &platform_speed_cap,
+ &platform_link_width);
if (adev->pm.pcie_gen_mask == 0) {
/* asic caps */