Add E610 specific function checking whether the FW API version
is compatible with the driver expectations.

The major API version should be less than or equal to the expected
API version. If not the driver won't be fully operational.

Check the minor version, and if it is more than two versions lesser
or greater than the expected version, print a message indicating
that the NVM or driver should be updated respectively.

Reviewed-by: Mateusz Polchlopek <mateusz.polchlo...@intel.com>
Co-developed-by: Piotr Kwapulinski <piotr.kwapulin...@intel.com>
Signed-off-by: Piotr Kwapulinski <piotr.kwapulin...@intel.com>
Signed-off-by: Jedrzej Jagielski <jedrzej.jagiel...@intel.com>
---
v5: add get_fw_ver
---
 .../ethernet/intel/ixgbe/devlink/devlink.c    |  2 ++
 drivers/net/ethernet/intel/ixgbe/ixgbe.h      |  1 +
 drivers/net/ethernet/intel/ixgbe/ixgbe_e610.c |  1 +
 drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 34 +++++++++++++++++++
 drivers/net/ethernet/intel/ixgbe/ixgbe_type.h |  1 +
 .../ethernet/intel/ixgbe/ixgbe_type_e610.h    |  4 +++
 6 files changed, 43 insertions(+)

diff --git a/drivers/net/ethernet/intel/ixgbe/devlink/devlink.c 
b/drivers/net/ethernet/intel/ixgbe/devlink/devlink.c
index 391d53503627..87ec2dea5862 100644
--- a/drivers/net/ethernet/intel/ixgbe/devlink/devlink.c
+++ b/drivers/net/ethernet/intel/ixgbe/devlink/devlink.c
@@ -499,6 +499,8 @@ static int ixgbe_devlink_reload_empr_finish(struct devlink 
*devlink,
 
        *actions_performed = BIT(DEVLINK_RELOAD_ACTION_FW_ACTIVATE);
 
+       adapter->flags2 &= ~IXGBE_FLAG2_API_MISMATCH;
+
        return 0;
 }
 
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe.h 
b/drivers/net/ethernet/intel/ixgbe/ixgbe.h
index 83d4d7368cda..2246997bc9fb 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe.h
@@ -671,6 +671,7 @@ struct ixgbe_adapter {
 #define IXGBE_FLAG2_PHY_FW_LOAD_FAILED         BIT(20)
 #define IXGBE_FLAG2_NO_MEDIA                   BIT(21)
 #define IXGBE_FLAG2_MOD_POWER_UNSUPPORTED      BIT(22)
+#define IXGBE_FLAG2_API_MISMATCH               BIT(23)
 
        /* Tx fast path data */
        int num_tx_queues;
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_e610.c 
b/drivers/net/ethernet/intel/ixgbe/ixgbe_e610.c
index e6b35792fdee..5aa66534aa75 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_e610.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_e610.c
@@ -3877,6 +3877,7 @@ static const struct ixgbe_mac_operations mac_ops_e610 = {
        .led_off                        = ixgbe_led_off_generic,
        .init_led_link_act              = ixgbe_init_led_link_act_generic,
        .reset_hw                       = ixgbe_reset_hw_e610,
+       .get_fw_ver                     = ixgbe_aci_get_fw_ver,
        .get_media_type                 = ixgbe_get_media_type_e610,
        .setup_link                     = ixgbe_setup_link_e610,
        .get_link_capabilities          = ixgbe_get_link_capabilities_e610,
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c 
b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index 9892d3f41620..de74132f9001 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -8361,6 +8361,34 @@ static void ixgbe_reset_subtask(struct ixgbe_adapter 
*adapter)
        rtnl_unlock();
 }
 
+static int ixgbe_check_fw_api_mismatch(struct ixgbe_adapter *adapter)
+{
+       struct ixgbe_hw *hw = &adapter->hw;
+
+       if (hw->mac.type != ixgbe_mac_e610)
+               return 0;
+
+       if (hw->mac.ops.get_fw_ver && hw->mac.ops.get_fw_ver(hw))
+               return 0;
+
+       if (hw->api_maj_ver > IXGBE_FW_API_VER_MAJOR) {
+               e_dev_err("The driver for the device stopped because the NVM 
image is newer than expected. You must install the most recent version of the 
network driver.\n");
+
+               adapter->flags2 |= IXGBE_FLAG2_API_MISMATCH;
+               return -EOPNOTSUPP;
+       } else if (hw->api_maj_ver == IXGBE_FW_API_VER_MAJOR &&
+                  hw->api_min_ver > IXGBE_FW_API_VER_MINOR + 
IXGBE_FW_API_VER_DIFF_ALLOWED) {
+               e_dev_info("The driver for the device detected a newer version 
of the NVM image than expected. Please install the most recent version of the 
network driver.\n");
+               adapter->flags2 |= IXGBE_FLAG2_API_MISMATCH;
+       } else if (hw->api_maj_ver < IXGBE_FW_API_VER_MAJOR ||
+                  hw->api_min_ver < IXGBE_FW_API_VER_MINOR - 
IXGBE_FW_API_VER_DIFF_ALLOWED) {
+               e_dev_info("The driver for the device detected an older version 
of the NVM image than expected. Please update the NVM image.\n");
+               adapter->flags2 |= IXGBE_FLAG2_API_MISMATCH;
+       }
+
+       return 0;
+}
+
 /**
  * ixgbe_check_fw_error - Check firmware for errors
  * @adapter: the adapter private structure
@@ -8371,6 +8399,7 @@ static bool ixgbe_check_fw_error(struct ixgbe_adapter 
*adapter)
 {
        struct ixgbe_hw *hw = &adapter->hw;
        u32 fwsm;
+       int err;
 
        /* read fwsm.ext_err_ind register and log errors */
        fwsm = IXGBE_READ_REG(hw, IXGBE_FWSM(hw));
@@ -8385,6 +8414,11 @@ static bool ixgbe_check_fw_error(struct ixgbe_adapter 
*adapter)
                e_dev_err("Firmware recovery mode detected. Limiting 
functionality. Refer to the Intel(R) Ethernet Adapters and Devices User Guide 
for details on firmware recovery mode.\n");
                return true;
        }
+       if (!(adapter->flags2 & IXGBE_FLAG2_API_MISMATCH)) {
+               err = ixgbe_check_fw_api_mismatch(adapter);
+               if (err)
+                       return true;
+       }
 
        return false;
 }
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h 
b/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h
index 5f814f023573..6bf6ba7dcdcc 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h
@@ -3456,6 +3456,7 @@ struct ixgbe_mac_operations {
        int (*start_hw)(struct ixgbe_hw *);
        int (*clear_hw_cntrs)(struct ixgbe_hw *);
        enum ixgbe_media_type (*get_media_type)(struct ixgbe_hw *);
+       int (*get_fw_ver)(struct ixgbe_hw *hw);
        int (*get_mac_addr)(struct ixgbe_hw *, u8 *);
        int (*get_san_mac_addr)(struct ixgbe_hw *, u8 *);
        int (*get_device_caps)(struct ixgbe_hw *, u16 *);
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_type_e610.h 
b/drivers/net/ethernet/intel/ixgbe/ixgbe_type_e610.h
index 93d854b8a92e..4d591019dd07 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_type_e610.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_type_e610.h
@@ -112,6 +112,10 @@
 #define IXGBE_PF_HICR_SV                       BIT(2)
 #define IXGBE_PF_HICR_EV                       BIT(3)
 
+#define IXGBE_FW_API_VER_MAJOR         0x01
+#define IXGBE_FW_API_VER_MINOR         0x07
+#define IXGBE_FW_API_VER_DIFF_ALLOWED  0x02
+
 #define IXGBE_ACI_DESC_SIZE            32
 #define IXGBE_ACI_DESC_SIZE_IN_DWORDS  (IXGBE_ACI_DESC_SIZE / BYTES_PER_DWORD)
 
-- 
2.31.1

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