quoted

  #define PCI_DEVICE_ID_LOONGSON_GMAC    0x7a03
+#define PCI_DEVICE_ID_LOONGSON_GNET    0x7a13
+#define DWMAC_CORE_LS2K2000            0x10    /* Loongson custom IP */

It is not suitable to call 0x10 "LS2K2000", because LS2K2000 is the
name of the whole SOC, not the NIC IP. As an example, ThinkPad is the
name of a whole computer series, you cannot call its CPU "ThinkPad
CPU". Right?
 From my point of view, the name "LOONGSON_DWMAC_CORE_1_00" in V12 is
much better.

If any macro name for 0x10 is unacceptable, and open-code 0x10 is also
unaccpetable, then there is an alternative way, apply the below patch
on top of this one:

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c

b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
index b41ffdc6d3d0..81293e2570e8 100644

--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c

@@ -66,11 +66,10 @@

  #define PCI_DEVICE_ID_LOONGSON_GMAC    0x7a03
  #define PCI_DEVICE_ID_LOONGSON_GNET    0x7a13
-#define DWMAC_CORE_LS2K2000            0x10    /* Loongson custom IP */
  #define CHANNEL_NUM                    8

  struct loongson_data {
-       u32 loongson_id;
+       int has_multichan;
         struct device *dev;
  };

@@ -370,7 +369,7 @@ static struct mac_device_info

*loongson_dwmac_setup(void *apriv)
          * AV feature and GMAC_INT_STATUS CSR flags layout. Get back the
          * original value so the correct HW-interface would be selected.
          */
-       if (ld->loongson_id == DWMAC_CORE_LS2K2000) {
+       if (ld->has_multichan) {
                 priv->synopsys_id = DWMAC_CORE_3_70;
                 *dma = dwmac1000_dma_ops;
                 dma->init_chan = loongson_gnet_dma_init_channel;

@@ -397,7 +396,7 @@ static struct mac_device_info

*loongson_dwmac_setup(void *apriv)
         if (pdev->device == PCI_DEVICE_ID_LOONGSON_GMAC) {
                 mac->link.caps = MAC_10 | MAC_100 | MAC_1000;
         } else {
-               if (ld->loongson_id == DWMAC_CORE_LS2K2000)
+               if (ld->has_multichan)
                         mac->link.caps = MAC_ASYM_PAUSE | MAC_SYM_PAUSE |
                                          MAC_10 | MAC_100 | MAC_1000;
                 else

@@ -474,6 +473,7 @@ static int loongson_dwmac_probe(struct pci_dev

*pdev, const struct pci_device_id
         struct stmmac_pci_info *info;
         struct stmmac_resources res;
         struct loongson_data *ld;
+      u32 gmac_version;
         int ret, i;

         plat = devm_kzalloc(&pdev->dev, sizeof(*plat), GFP_KERNEL);

@@ -530,9 +530,19 @@ static int loongson_dwmac_probe(struct pci_dev

*pdev, const struct pci_device_id

         memset(&res, 0, sizeof(res));
         res.addr = pcim_iomap_table(pdev)[0];
-       ld->loongson_id = readl(res.addr + GMAC_VERSION) & 0xff;
+       gmac_version = readl(res.addr + GMAC_VERSION) & 0xff;

-       if (ld->loongson_id == DWMAC_CORE_LS2K2000) {
+      switch (gmac_version) {
+      case DWMAC_CORE_3_50:
+      case DWMAC_CORE_3_70:
+           ld->has_multichan = 0;
+                  plat->tx_queues_to_use = 1;
+                  plat->rx_queues_to_use = 1;
+                  ret = loongson_dwmac_intx_config(pdev, plat, &res);
+           break;
+
+        default:
+             ld->has_multichan = 1;
                 plat->rx_queues_to_use = CHANNEL_NUM;
                 plat->tx_queues_to_use = CHANNEL_NUM;

@@ -543,12 +553,8 @@ static int loongson_dwmac_probe(struct pci_dev

*pdev, const struct pci_device_id
                         plat->tx_queues_cfg[i].coe_unsupported = 1;

                 ret = loongson_dwmac_msi_config(pdev, plat, &res);
-       } else {
-               plat->tx_queues_to_use = 1;
-               plat->rx_queues_to_use = 1;
+    }

-               ret = loongson_dwmac_intx_config(pdev, plat, &res);
-       }
         if (ret)
                 goto err_disable_device;