RE: [PATCH net-next v8 2/6] net: libwx: Add sriov api for wangxun nics

+static int __wx_enable_sriov(struct wx *wx, u8 num_vfs)
+{
+	int i, ret = 0;
+	u32 value = 0;
+
+	set_bit(WX_FLAG_SRIOV_ENABLED, wx->flags);
+	wx_err(wx, "SR-IOV enabled with %d VFs\n", num_vfs);
+
+	/* Enable VMDq flag so device will be set in VM mode */
+	set_bit(WX_FLAG_VMDQ_ENABLED, wx->flags);
+	if (!wx->ring_feature[RING_F_VMDQ].limit)
+		wx->ring_feature[RING_F_VMDQ].limit = 1;
+	wx->ring_feature[RING_F_VMDQ].offset = num_vfs;
+
+	wx->vfinfo = kcalloc(num_vfs, sizeof(struct vf_data_storage),
+			     GFP_KERNEL);
+	if (!wx->vfinfo)
+		return -ENOMEM;
+
+	ret = wx_alloc_vf_macvlans(wx, num_vfs);
+	if (ret)
+		return ret;
+
+	/* Initialize default switching mode VEB */
+	wr32m(wx, WX_PSR_CTL, WX_PSR_CTL_SW_EN, WX_PSR_CTL_SW_EN);
+
+	for (i = 0; i < num_vfs; i++) {
+		/* enable spoof checking for all VFs */
+		wx->vfinfo[i].spoofchk_enabled = true;
+		wx->vfinfo[i].link_enable = true;
+		/* untrust all VFs */
+		wx->vfinfo[i].trusted = false;
+		/* set the default xcast mode */
+		wx->vfinfo[i].xcast_mode = WXVF_XCAST_MODE_NONE;
+	}
+
+	if (wx->mac.type == wx_mac_sp) {
+		if (num_vfs < 32)
+			value = WX_CFG_PORT_CTL_NUM_VT_32;
+		else
+			value = WX_CFG_PORT_CTL_NUM_VT_64;
+	} else {
+		value = WX_CFG_PORT_CTL_NUM_VT_8;
+	}

For the intention of supporting AML devices,

switch (wx->mac.type) {
case wx_mac_sp:
case wx_mac_aml:
	...
case wx_mac_em:
	...
default:
	...
}

+	wr32m(wx, WX_CFG_PORT_CTL,
+	      WX_CFG_PORT_CTL_NUM_VT_MASK,
+	      value);
+
+	return ret;
+}
+