bnxt_en: Add bnxt_hwrm_nvm_get_dev_info() to query NVM info.

Add a new bnxt_hwrm_nvm_get_dev_info() to query firmware version
information via NVM_GET_DEV_INFO firmware command.  Use it to
get the running version of the NVM configuration information.

This new function will also be used in subsequent patches to get the
stored firmware versions.
Reviewed-by: NAndy Gospodarek <gospo@broadcom.com>
Signed-off-by: NVasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: NMichael Chan <michael.chan@broadcom.com>
Link: https://lore.kernel.org/r/1602493854-29283-8-git-send-email-michael.chan@broadcom.comSigned-off-by: NJakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/broadcom/bnxt/bnxt.c

@@ -7562,6 +7562,16 @@ static int bnxt_hwrm_func_reset(struct bnxt *bp)
 	return hwrm_send_message(bp, &req, sizeof(req), HWRM_RESET_TIMEOUT);
 }
 
+static void bnxt_nvm_cfg_ver_get(struct bnxt *bp)
+{
+	struct hwrm_nvm_get_dev_info_output nvm_info;
+
+	if (!bnxt_hwrm_nvm_get_dev_info(bp, &nvm_info))
+		snprintf(bp->nvm_cfg_ver, FW_VER_STR_LEN, "%d.%d.%d",
+			 nvm_info.nvm_cfg_ver_maj, nvm_info.nvm_cfg_ver_min,
+			 nvm_info.nvm_cfg_ver_upd);
+}
+
 static int bnxt_hwrm_queue_qportcfg(struct bnxt *bp)
 {
 	int rc = 0;
@@ -11223,6 +11233,8 @@ static int bnxt_fw_init_one_p1(struct bnxt *bp)
 		if (rc)
 			return rc;
 	}
+	bnxt_nvm_cfg_ver_get(bp);
+
 	rc = bnxt_hwrm_func_reset(bp);
 	if (rc)
 		return -ENODEV;

drivers/net/ethernet/broadcom/bnxt/bnxt.h

@@ -1856,6 +1856,7 @@ struct bnxt {
 #define PHY_VER_STR_LEN         (FW_VER_STR_LEN - BC_HWRM_STR_LEN)
 	char			fw_ver_str[FW_VER_STR_LEN];
 	char			hwrm_ver_supp[FW_VER_STR_LEN];
+	char			nvm_cfg_ver[FW_VER_STR_LEN];
 	u64			fw_ver_code;
 #define BNXT_FW_VER_CODE(maj, min, bld, rsv)			\
 	((u64)(maj) << 48 | (u64)(min) << 32 | (u64)(bld) << 16 | (rsv))

drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c

@@ -2072,6 +2072,22 @@ static u32 bnxt_get_link(struct net_device *dev)
 	return bp->link_info.link_up;
 }
 
+int bnxt_hwrm_nvm_get_dev_info(struct bnxt *bp,
+			       struct hwrm_nvm_get_dev_info_output *nvm_dev_info)
+{
+	struct hwrm_nvm_get_dev_info_output *resp = bp->hwrm_cmd_resp_addr;
+	struct hwrm_nvm_get_dev_info_input req = {0};
+	int rc;
+
+	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_NVM_GET_DEV_INFO, -1, -1);
+	mutex_lock(&bp->hwrm_cmd_lock);
+	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	if (!rc)
+		memcpy(nvm_dev_info, resp, sizeof(*resp));
+	mutex_unlock(&bp->hwrm_cmd_lock);
+	return rc;
+}
+
 static void bnxt_print_admin_err(struct bnxt *bp)
 {
 	netdev_info(bp->dev, "PF does not have admin privileges to flash or reset the device\n");

drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.h

@@ -92,6 +92,8 @@ u32 bnxt_get_rxfh_indir_size(struct net_device *dev);
 u32 _bnxt_fw_to_ethtool_adv_spds(u16, u8);
 u32 bnxt_fw_to_ethtool_speed(u16);
 u16 bnxt_get_fw_auto_link_speeds(u32);
+int bnxt_hwrm_nvm_get_dev_info(struct bnxt *bp,
+			       struct hwrm_nvm_get_dev_info_output *nvm_dev_info);
 int bnxt_flash_package_from_file(struct net_device *dev, const char *filename,
 				 u32 install_type);
 void bnxt_ethtool_init(struct bnxt *bp);