qlcnic: add driver debug support

Add debug print in driver, can be tuned by ethtool msg level
callback.

Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 20 insertions, 3 deletions

diff --git a/drivers/net/qlcnic/qlcnic_main.c b/drivers/net/qlcnic/qlcnic_main.c
index 38e082969253..039f69382dc9 100644
--- a/drivers/net/qlcnic/qlcnic_main.c
+++ b/drivers/net/qlcnic/qlcnic_main.c
@@ -1742,6 +1742,7 @@ static void qlcnic_tx_timeout_task(struct work_struct *work)
 request_reset:
         adapter->need_fw_reset = 1;
         clear_bit(__QLCNIC_RESETTING, &adapter->state);
+        QLCDB(adapter, DRV, "Resetting adapter\n");
 }
 
 static struct net_device_stats *qlcnic_get_stats(struct net_device *netdev)
@@ -2046,6 +2047,7 @@ qlcnic_can_start_firmware(struct qlcnic_adapter *adapter)
         }
 
         prev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
+        QLCDB(adapter, HW, "Device state = %u\n", prev_state);
 
         switch (prev_state) {
         case QLCNIC_DEV_COLD:
@@ -2082,8 +2084,11 @@ start_fw:
         } while ((QLCRD32(adapter, QLCNIC_CRB_DEV_STATE) != QLCNIC_DEV_READY)
                         && --dev_init_timeo);
 
-        if (!dev_init_timeo)
+        if (!dev_init_timeo) {
+                dev_err(&adapter->pdev->dev,
+                        "Waiting for device to initialize timeout\n");
                 return -1;
+        }
 
         if (qlcnic_api_lock(adapter))
                 return -1;
@@ -2113,6 +2118,7 @@ qlcnic_fwinit_work(struct work_struct *work)
                         return;
                 }
 
+                QLCDB(adapter, DRV, "Resetting FW\n");
                 if (!qlcnic_start_firmware(adapter)) {
                         qlcnic_schedule_work(adapter, qlcnic_attach_work, 0);
                         return;
@@ -2121,10 +2127,15 @@ qlcnic_fwinit_work(struct work_struct *work)
                 goto err_ret;
         }
 
-        if (adapter->fw_wait_cnt++ > (adapter->dev_init_timeo / 2))
+        if (adapter->fw_wait_cnt++ > (adapter->dev_init_timeo / 2)) {
+                dev_err(&adapter->pdev->dev,
+                                "Waiting for device to reset timeout\n");
                 goto err_ret;
+        }
 
         dev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
+        QLCDB(adapter, HW, "Func waiting: Device state=%d\n", dev_state);
+
         switch (dev_state) {
         case QLCNIC_DEV_READY:
                 if (!qlcnic_start_firmware(adapter)) {
@@ -2177,6 +2188,8 @@ qlcnic_detach_work(struct work_struct *work)
         return;
 
 err_ret:
+        dev_err(&adapter->pdev->dev, "detach failed; status=%d temp=%d\n",
+                        status, adapter->temp);
         qlcnic_clr_all_drv_state(adapter);
 
 }
@@ -2194,6 +2207,7 @@ qlcnic_dev_request_reset(struct qlcnic_adapter *adapter)
         if (state != QLCNIC_DEV_INITALIZING && state != QLCNIC_DEV_NEED_RESET) {
                 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_NEED_RESET);
                 set_bit(__QLCNIC_START_FW, &adapter->state);
+                QLCDB(adapter, DRV, "NEED_RESET state set\n");
         }
 
         qlcnic_api_unlock(adapter);
@@ -2290,8 +2304,11 @@ detach:
                 QLCNIC_DEV_NEED_RESET;
 
         if ((auto_fw_reset == AUTO_FW_RESET_ENABLED) &&
-                        !test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
+                !test_and_set_bit(__QLCNIC_RESETTING, &adapter->state)) {
+
                 qlcnic_schedule_work(adapter, qlcnic_detach_work, 0);
+                QLCDB(adapter, DRV, "fw recovery scheduled.\n");
+        }
 
         return 1;
 }