i40e: Add FW check to disable DCB and wrap autoneg workaround with FW check

For FW < 4.33 DCB should be disabled.
Also Autoneg workaround to avoid Rx stall is still needed for FW < 4.33.

Change-ID: Iff36ad86be2f597e7701096014d6d094332a9a21
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 19 insertions, 12 deletions

diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index 849fec7fa7db..4fb05b4c02b3 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -4551,6 +4551,11 @@ static int i40e_init_pf_dcb(struct i40e_pf *pf)
         struct i40e_hw *hw = &pf->hw;
         int err = 0;
 
+        /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
+        if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
+            (pf->hw.aq.fw_maj_ver < 4))
+                goto out;
+
         /* Get the initial DCB configuration */
         err = i40e_init_dcb(hw);
         if (!err) {
@@ -6311,13 +6316,14 @@ static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
                 }
         }
 
-        msleep(75);
-        ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
-        if (ret) {
-                dev_info(&pf->pdev->dev, "link restart failed, aq_err=%d\n",
-                         pf->hw.aq.asq_last_status);
+        if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
+            (pf->hw.aq.fw_maj_ver < 4)) {
+                msleep(75);
+                ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
+                if (ret)
+                        dev_info(&pf->pdev->dev, "link restart failed, aq_err=%d\n",
+                                 pf->hw.aq.asq_last_status);
         }
-
         /* reinit the misc interrupt */
         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
                 ret = i40e_setup_misc_vector(pf);
@@ -9677,13 +9683,14 @@ static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
         if (err)
                 dev_info(&pf->pdev->dev, "set phy mask fail, aq_err %d\n", err);
 
-        msleep(75);
-        err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
-        if (err) {
-                dev_info(&pf->pdev->dev, "link restart failed, aq_err=%d\n",
-                         pf->hw.aq.asq_last_status);
+        if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
+            (pf->hw.aq.fw_maj_ver < 4)) {
+                msleep(75);
+                err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
+                if (err)
+                        dev_info(&pf->pdev->dev, "link restart failed, aq_err=%d\n",
+                                 pf->hw.aq.asq_last_status);
         }
-
         /* The main driver is (mostly) up and happy. We need to set this state
          * before setting up the misc vector or we get a race and the vector
          * ends up disabled forever.