bnxt_en: Provide stored devlink "fw" version on older firmware

On older firmware that doesn't support the HWRM_NVM_GET_DEV_INFO
command that returns detailed stored firmware versions, fallback
to use the same firmware package version that is reported to ethtool.
Refactor bnxt_get_pkgver() in bnxt_ethtool.c so that devlink can call
and get the package version.

Signed-off-by: Vikas Gupta <vikas.gupta@broadcom.com>
Reviewed-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
index 4007b2a..ce790e9 100644 (file)
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
@@ -915,8 +915,13 @@ static int bnxt_dl_info_get(struct devlink *dl, struct devlink_info_req *req,
 
        rc = bnxt_hwrm_nvm_get_dev_info(bp, &nvm_dev_info);
        if (rc ||
-           !(nvm_dev_info.flags & NVM_GET_DEV_INFO_RESP_FLAGS_FW_VER_VALID))
+           !(nvm_dev_info.flags & NVM_GET_DEV_INFO_RESP_FLAGS_FW_VER_VALID)) {
+               if (!bnxt_get_pkginfo(bp->dev, buf, sizeof(buf)))
+                       return bnxt_dl_info_put(bp, req, BNXT_VERSION_STORED,
+                                               DEVLINK_INFO_VERSION_GENERIC_FW,
+                                               buf);
                return 0;
+       }
 
        buf[0] = 0;
        strncat(buf, nvm_dev_info.pkg_name, HWRM_FW_VER_STR_LEN);

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
index 334ada0..8188d55 100644 (file)
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
@@ -2832,39 +2832,56 @@ static char *bnxt_parse_pkglog(int desired_field, u8 *data, size_t datalen)
        return retval;
 }
 
-static void bnxt_get_pkgver(struct net_device *dev)
+int bnxt_get_pkginfo(struct net_device *dev, char *ver, int size)
 {
        struct bnxt *bp = netdev_priv(dev);
        u16 index = 0;
        char *pkgver;
        u32 pkglen;
        u8 *pkgbuf;
-       int len;
+       int rc;
 
-       if (bnxt_find_nvram_item(dev, BNX_DIR_TYPE_PKG_LOG,
-                                BNX_DIR_ORDINAL_FIRST, BNX_DIR_EXT_NONE,
-                                &index, NULL, &pkglen) != 0)
-               return;
+       rc = bnxt_find_nvram_item(dev, BNX_DIR_TYPE_PKG_LOG,
+                                 BNX_DIR_ORDINAL_FIRST, BNX_DIR_EXT_NONE,
+                                 &index, NULL, &pkglen);
+       if (rc)
+               return rc;
 
        pkgbuf = kzalloc(pkglen, GFP_KERNEL);
        if (!pkgbuf) {
                dev_err(&bp->pdev->dev, "Unable to allocate memory for pkg version, length = %u\n",
                        pkglen);
-               return;
+               return -ENOMEM;
        }
 
-       if (bnxt_get_nvram_item(dev, index, 0, pkglen, pkgbuf))
+       rc = bnxt_get_nvram_item(dev, index, 0, pkglen, pkgbuf);
+       if (rc)
                goto err;
 
        pkgver = bnxt_parse_pkglog(BNX_PKG_LOG_FIELD_IDX_PKG_VERSION, pkgbuf,
                                   pkglen);
-       if (pkgver && *pkgver != 0 && isdigit(*pkgver)) {
+       if (pkgver && *pkgver != 0 && isdigit(*pkgver))
+               strscpy(ver, pkgver, size);
+       else
+               rc = -ENOENT;
+
+err:
+       kfree(pkgbuf);
+
+       return rc;
+}
+
+static void bnxt_get_pkgver(struct net_device *dev)
+{
+       struct bnxt *bp = netdev_priv(dev);
+       char buf[FW_VER_STR_LEN];
+       int len;
+
+       if (!bnxt_get_pkginfo(dev, buf, sizeof(buf))) {
                len = strlen(bp->fw_ver_str);
                snprintf(bp->fw_ver_str + len, FW_VER_STR_LEN - len - 1,
-                        "/pkg %s", pkgver);
+                        "/pkg %s", buf);
        }
-err:
-       kfree(pkgbuf);
 }
 
 static int bnxt_get_eeprom(struct net_device *dev,

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.h b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.h
index 4f7eaba..6aa4484 100644 (file)
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.h
@@ -55,6 +55,7 @@ int bnxt_hwrm_firmware_reset(struct net_device *dev, u8 proc_type,
                             u8 self_reset, u8 flags);
 int bnxt_flash_package_from_fw_obj(struct net_device *dev, const struct firmware *fw,
                                   u32 install_type);
+int bnxt_get_pkginfo(struct net_device *dev, char *ver, int size);
 void bnxt_ethtool_init(struct bnxt *bp);
 void bnxt_ethtool_free(struct bnxt *bp);