ixgbe: Add FW detection and warning for 82599 SFP+ adapters

82599 has a FW running that helps manage the internal SFI PHY.  There are
also a number of pre-production samples of these SFI-based devices in the
field.  This patch adds a check to look for the firmware running on all
SFP+ based adapters, and displays a warning to the system log if a
pre-production adapter is identified.  The driver will continue loading
though, with no functional degradation.

Also remove an old function prototype from ixgbe_82599.c that isn't being
used.

Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

4 files changed, 85 insertions, 8 deletions

diff --git a/drivers/net/ixgbe/ixgbe_82599.c b/drivers/net/ixgbe/ixgbe_82599.c
index 5c2627b68c2d..1984cab7d48b 100644
--- a/drivers/net/ixgbe/ixgbe_82599.c
+++ b/drivers/net/ixgbe/ixgbe_82599.c
@@ -71,10 +71,10 @@ s32 ixgbe_clear_vfta_82599(struct ixgbe_hw *hw);
 s32 ixgbe_init_uta_tables_82599(struct ixgbe_hw *hw);
 s32 ixgbe_read_analog_reg8_82599(struct ixgbe_hw *hw, u32 reg, u8 *val);
 s32 ixgbe_write_analog_reg8_82599(struct ixgbe_hw *hw, u32 reg, u8 val);
-s32 ixgbe_start_hw_rev_0_82599(struct ixgbe_hw *hw);
 s32 ixgbe_identify_phy_82599(struct ixgbe_hw *hw);
 s32 ixgbe_start_hw_82599(struct ixgbe_hw *hw);
 u32 ixgbe_get_supported_physical_layer_82599(struct ixgbe_hw *hw);
+static s32 ixgbe_verify_fw_version_82599(struct ixgbe_hw *hw);
 
 void ixgbe_init_mac_link_ops_82599(struct ixgbe_hw *hw)
 {
@@ -2142,8 +2142,9 @@ s32 ixgbe_write_analog_reg8_82599(struct ixgbe_hw *hw, u32 reg, u8 val)
 s32 ixgbe_start_hw_82599(struct ixgbe_hw *hw)
 {
         u32 q_num;
+        s32 ret_val;
 
-        ixgbe_start_hw_generic(hw);
+        ret_val = ixgbe_start_hw_generic(hw);
 
         /* Clear the rate limiters */
         for (q_num = 0; q_num < hw->mac.max_tx_queues; q_num++) {
@@ -2155,7 +2156,10 @@ s32 ixgbe_start_hw_82599(struct ixgbe_hw *hw)
         /* We need to run link autotry after the driver loads */
         hw->mac.autotry_restart = true;
 
-        return 0;
+        if (ret_val == 0)
+                ret_val = ixgbe_verify_fw_version_82599(hw);
+
+        return ret_val;
 }
 
 /**
@@ -2407,6 +2411,54 @@ san_mac_addr_out:
         return 0;
 }
 
+/**
+ *  ixgbe_verify_fw_version_82599 - verify fw version for 82599
+ *  @hw: pointer to hardware structure
+ *
+ *  Verifies that installed the firmware version is 0.6 or higher
+ *  for SFI devices. All 82599 SFI devices should have version 0.6 or higher.
+ *
+ *  Returns IXGBE_ERR_EEPROM_VERSION if the FW is not present or
+ *  if the FW version is not supported.
+ **/
+static s32 ixgbe_verify_fw_version_82599(struct ixgbe_hw *hw)
+{
+        s32 status = IXGBE_ERR_EEPROM_VERSION;
+        u16 fw_offset, fw_ptp_cfg_offset;
+        u16 fw_version = 0;
+
+        /* firmware check is only necessary for SFI devices */
+        if (hw->phy.media_type != ixgbe_media_type_fiber) {
+                status = 0;
+                goto fw_version_out;
+        }
+
+        /* get the offset to the Firmware Module block */
+        hw->eeprom.ops.read(hw, IXGBE_FW_PTR, &fw_offset);
+
+        if ((fw_offset == 0) || (fw_offset == 0xFFFF))
+                goto fw_version_out;
+
+        /* get the offset to the Pass Through Patch Configuration block */
+        hw->eeprom.ops.read(hw, (fw_offset +
+                                 IXGBE_FW_PASSTHROUGH_PATCH_CONFIG_PTR),
+                                 &fw_ptp_cfg_offset);
+
+        if ((fw_ptp_cfg_offset == 0) || (fw_ptp_cfg_offset == 0xFFFF))
+                goto fw_version_out;
+
+        /* get the firmware version */
+        hw->eeprom.ops.read(hw, (fw_ptp_cfg_offset +
+                                 IXGBE_FW_PATCH_VERSION_4),
+                                 &fw_version);
+
+        if (fw_version > 0x5)
+                status = 0;
+
+fw_version_out:
+        return status;
+}
+
 static struct ixgbe_mac_operations mac_ops_82599 = {
         .init_hw                = &ixgbe_init_hw_generic,
         .reset_hw               = &ixgbe_reset_hw_82599,
diff --git a/drivers/net/ixgbe/ixgbe_common.c b/drivers/net/ixgbe/ixgbe_common.c
index db339d6fe63d..96a185953777 100644
--- a/drivers/net/ixgbe/ixgbe_common.c
+++ b/drivers/net/ixgbe/ixgbe_common.c
@@ -106,13 +106,17 @@ s32 ixgbe_start_hw_generic(struct ixgbe_hw *hw)
  **/
 s32 ixgbe_init_hw_generic(struct ixgbe_hw *hw)
 {
+        s32 status;
+
         /* Reset the hardware */
-        hw->mac.ops.reset_hw(hw);
+        status = hw->mac.ops.reset_hw(hw);
 
-        /* Start the HW */
-        hw->mac.ops.start_hw(hw);
+        if (status == 0) {
+                /* Start the HW */
+                status = hw->mac.ops.start_hw(hw);
+        }
 
-        return 0;
+        return status;
 }
 
 /**
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index ca7c5d508752..543a606f22cc 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -2728,6 +2728,15 @@ void ixgbe_reset(struct ixgbe_adapter *adapter)
         case IXGBE_ERR_MASTER_REQUESTS_PENDING:
                 dev_err(&adapter->pdev->dev, "master disable timed out\n");
                 break;
+        case IXGBE_ERR_EEPROM_VERSION:
+                /* We are running on a pre-production device, log a warning */
+                dev_warn(&adapter->pdev->dev, "This device is a pre-production "
+                         "adapter/LOM.  Please be aware there may be issues "
+                         "associated with your hardware.  If you are "
+                         "experiencing problems please contact your Intel or "
+                         "hardware representative who provided you with this "
+                         "hardware.\n");
+                break;
         default:
                 dev_err(&adapter->pdev->dev, "Hardware Error: %d\n", err);
         }
@@ -5608,8 +5617,17 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev,
         hw->eeprom.ops.read(hw, 0x29, &adapter->eeprom_version);
 
         /* reset the hardware with the new settings */
-        hw->mac.ops.start_hw(hw);
+        err = hw->mac.ops.start_hw(hw);
 
+        if (err == IXGBE_ERR_EEPROM_VERSION) {
+                /* We are running on a pre-production device, log a warning */
+                dev_warn(&pdev->dev, "This device is a pre-production "
+                         "adapter/LOM.  Please be aware there may be issues "
+                         "associated with your hardware.  If you are "
+                         "experiencing problems please contact your Intel or "
+                         "hardware representative who provided you with this "
+                         "hardware.\n");
+        }
         strcpy(netdev->name, "eth%d");
         err = register_netdev(netdev);
         if (err)
diff --git a/drivers/net/ixgbe/ixgbe_type.h b/drivers/net/ixgbe/ixgbe_type.h
index 68cac3674f9a..fa87309dc087 100644
--- a/drivers/net/ixgbe/ixgbe_type.h
+++ b/drivers/net/ixgbe/ixgbe_type.h
@@ -1516,6 +1516,8 @@
 #define IXGBE_SAN_MAC_ADDR_PORT1_OFFSET  0x3
 #define IXGBE_DEVICE_CAPS_ALLOW_ANY_SFP  0x1
 #define IXGBE_DEVICE_CAPS_FCOE_OFFLOADS  0x2
+#define IXGBE_FW_PASSTHROUGH_PATCH_CONFIG_PTR   0x4
+#define IXGBE_FW_PATCH_VERSION_4   0x7
 
 /* PCI Bus Info */
 #define IXGBE_PCI_LINK_STATUS     0xB2
@@ -2495,6 +2497,7 @@ struct ixgbe_info {
 #define IXGBE_ERR_SFP_NOT_PRESENT               -20
 #define IXGBE_ERR_SFP_NO_INIT_SEQ_PRESENT       -21
 #define IXGBE_ERR_FDIR_REINIT_FAILED            -23
+#define IXGBE_ERR_EEPROM_VERSION                -24
 #define IXGBE_NOT_IMPLEMENTED                   0x7FFFFFFF
 
 #endif /* _IXGBE_TYPE_H_ */