cxgb3 - FW versioning

Clean up FW version checking.
The supported FW version is now 3.1.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

3 files changed, 47 insertions, 12 deletions

diff --git a/drivers/net/cxgb3/cxgb3_main.c b/drivers/net/cxgb3/cxgb3_main.c
index 54c49acd86b4..804414637ec7 100644
--- a/drivers/net/cxgb3/cxgb3_main.c
+++ b/drivers/net/cxgb3/cxgb3_main.c
@@ -665,11 +665,8 @@ static int cxgb_up(struct adapter *adap)
 
         if (!(adap->flags & FULL_INIT_DONE)) {
                 err = t3_check_fw_version(adap);
-                if (err) {
-                        dev_err(&adap->pdev->dev,
-                                "adapter FW is not compatible with driver\n");
+                if (err)
                         goto out;
-                }
 
                 err = init_dummy_netdevs(adap);
                 if (err)
@@ -1002,10 +999,14 @@ static void get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
         strcpy(info->bus_info, pci_name(adapter->pdev));
         if (!fw_vers)
                 strcpy(info->fw_version, "N/A");
-        else
+        else {
                 snprintf(info->fw_version, sizeof(info->fw_version),
-                         "%s %u.%u", (fw_vers >> 24) ? "T" : "N",
-                         (fw_vers >> 12) & 0xfff, fw_vers & 0xfff);
+                         "%s %u.%u.%u",
+                         G_FW_VERSION_TYPE(fw_vers) ? "T" : "N",
+                         G_FW_VERSION_MAJOR(fw_vers),
+                         G_FW_VERSION_MINOR(fw_vers),
+                         G_FW_VERSION_MICRO(fw_vers));
+        }
 }
 
 static void get_strings(struct net_device *dev, u32 stringset, u8 * data)
diff --git a/drivers/net/cxgb3/firmware_exports.h b/drivers/net/cxgb3/firmware_exports.h
index 3565f481801b..eea7d8940dc7 100644
--- a/drivers/net/cxgb3/firmware_exports.h
+++ b/drivers/net/cxgb3/firmware_exports.h
@@ -141,4 +141,31 @@
 #define FW_WRC_NUM                      \
     (65536 + FW_TUNNEL_NUM + FW_CTRL_NUM + FW_RI_NUM + FW_RX_PKT_NUM)
 
+/*
+ * FW type and version.
+ */
+#define S_FW_VERSION_TYPE               28
+#define M_FW_VERSION_TYPE               0xF
+#define V_FW_VERSION_TYPE(x)            ((x) << S_FW_VERSION_TYPE)
+#define G_FW_VERSION_TYPE(x)            \
+    (((x) >> S_FW_VERSION_TYPE) & M_FW_VERSION_TYPE)
+
+#define S_FW_VERSION_MAJOR              16
+#define M_FW_VERSION_MAJOR              0xFFF
+#define V_FW_VERSION_MAJOR(x)           ((x) << S_FW_VERSION_MAJOR)
+#define G_FW_VERSION_MAJOR(x)           \
+    (((x) >> S_FW_VERSION_MAJOR) & M_FW_VERSION_MAJOR)
+
+#define S_FW_VERSION_MINOR              8
+#define M_FW_VERSION_MINOR              0xFF
+#define V_FW_VERSION_MINOR(x)           ((x) << S_FW_VERSION_MINOR)
+#define G_FW_VERSION_MINOR(x)           \
+    (((x) >> S_FW_VERSION_MINOR) & M_FW_VERSION_MINOR)
+
+#define S_FW_VERSION_MICRO              0
+#define M_FW_VERSION_MICRO              0xFF
+#define V_FW_VERSION_MICRO(x)           ((x) << S_FW_VERSION_MICRO)
+#define G_FW_VERSION_MICRO(x)           \
+    (((x) >> S_FW_VERSION_MICRO) & M_FW_VERSION_MICRO)
+
 #endif                          /* _FIRMWARE_EXPORTS_H_ */
diff --git a/drivers/net/cxgb3/t3_hw.c b/drivers/net/cxgb3/t3_hw.c
index a4e2e57e1465..4545acb3a2d5 100644
--- a/drivers/net/cxgb3/t3_hw.c
+++ b/drivers/net/cxgb3/t3_hw.c
@@ -826,6 +826,11 @@ static int t3_write_flash(struct adapter *adapter, unsigned int addr,
         return 0;
 }
 
+enum fw_version_type {
+        FW_VERSION_N3,
+        FW_VERSION_T3
+};
+
 /**
  *      t3_get_fw_version - read the firmware version
  *      @adapter: the adapter
@@ -849,19 +854,21 @@ int t3_check_fw_version(struct adapter *adapter)
 {
         int ret;
         u32 vers;
+        unsigned int type, major, minor;
 
         ret = t3_get_fw_version(adapter, &vers);
         if (ret)
                 return ret;
 
-        /* Minor 0xfff means the FW is an internal development-only version. */
-        if ((vers & 0xfff) == 0xfff)
-                return 0;
+        type = G_FW_VERSION_TYPE(vers);
+        major = G_FW_VERSION_MAJOR(vers);
+        minor = G_FW_VERSION_MINOR(vers);
 
-        if (vers == 0x1002009)
+        if (type == FW_VERSION_T3 && major == 3 && minor == 1)
                 return 0;
 
-        CH_ERR(adapter, "found wrong FW version, driver needs version 2.9\n");
+        CH_ERR(adapter, "found wrong FW version(%u.%u), "
+               "driver needs version 3.1\n", major, minor);
         return -EINVAL;
 }