PCI: Add quirk for hisilicon NP devices 5896

hulk inclusion
category: bugfix
bugzilla: 13666
CVE: NA

---------------------------------------

Add pci quirk for hisilicon PCI Network Processor devices 5896.
The size of the unused BAR3 is set as 265T wrongly. This patch disalbes
this bar.
Signed-off-by: NRui Ding <rui.ding@huawei.com>
Signed-off-by: NXiongfeng Wang <wangxiongfeng2@huawei.com>
Reviewed-by: NHanjun Guo <guohanjun@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

drivers/pci/quirks.c

@@ -5176,3 +5176,26 @@ 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);
+
+static void pci_quirk_hisi_fixup_class(struct pci_dev *dev)
+{
+	dev->class = PCI_BASE_CLASS_NETWORK << 8;
+	pci_info(dev, "force hisi class type to network\n");
+}
+DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_HUAWEI, PCIE_DEVICE_ID_HISI_5896,
+			pci_quirk_hisi_fixup_class);
+
+static void pci_quirk_hisi_fixup_bar(struct pci_dev *dev)
+{
+	int i, start = 3;
+
+	for (i = start; i < PCI_NUM_RESOURCES; i++) {
+		dev->resource[i].start = 0;
+		dev->resource[i].end = 0;
+		dev->resource[i].flags = 0;
+	}
+
+	pci_info(dev, "force disable hisilicon np bar\n");
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_HUAWEI, PCIE_DEVICE_ID_HISI_5896,
+			 pci_quirk_hisi_fixup_bar);

include/linux/pci_ids.h

@@ -2539,6 +2539,8 @@
 #define PCI_VENDOR_ID_HUAWEI         	0x19e5
 #define PCI_DEVICE_ID_ZIP_PF            0xa250
 #define PCI_DEVICE_ID_ZIP_VF            0xa251
+/* Hisilicon PCIe NP devices */
+#define PCIE_DEVICE_ID_HISI_5896        0x5896
 
 #define PCI_VENDOR_ID_NETRONOME		0x19ee
 #define PCI_DEVICE_ID_NETRONOME_NFP3200	0x3200