[dpdk-dev] [PATCH 2/4] net/enic: add handler to return firmware version string

[Hyong Youb Kim <hyonkim@cisco.com>]

Cisco VIC adapters run firmware. Add the fw_version_get handler to
help diagnostics.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
---
 doc/guides/nics/features/enic.ini |  1 +
 drivers/net/enic/base/vnic_dev.c  | 26 ++++++++++++++++++++++++++
 drivers/net/enic/enic_ethdev.c    | 21 +++++++++++++++++++++
 3 files changed, 48 insertions(+)

diff --git a/doc/guides/nics/features/enic.ini b/doc/guides/nics/features/enic.ini
index 8a4bad29f..020b75cf0 100644
--- a/doc/guides/nics/features/enic.ini
+++ b/doc/guides/nics/features/enic.ini
@@ -31,6 +31,7 @@ Inner L3 checksum    = Y
 Inner L4 checksum    = Y
 Packet type parsing  = Y
 Basic stats          = Y
+FW version           = Y
 Multiprocess aware   = Y
 BSD nic_uio          = Y
 Linux UIO            = Y
diff --git a/drivers/net/enic/base/vnic_dev.c b/drivers/net/enic/base/vnic_dev.c
index fd303fece..1e5b12a80 100644
--- a/drivers/net/enic/base/vnic_dev.c
+++ b/drivers/net/enic/base/vnic_dev.c
@@ -458,6 +458,32 @@ int vnic_dev_cmd_args(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
 	}
 }
 
+int vnic_dev_fw_info(struct vnic_dev *vdev,
+		     struct vnic_devcmd_fw_info **fw_info)
+{
+	char name[NAME_MAX];
+	u64 a0, a1 = 0;
+	int wait = 1000;
+	int err = 0;
+	static u32 instance;
+
+	if (!vdev->fw_info) {
+		snprintf((char *)name, sizeof(name), "vnic_fw_info-%u",
+			 instance++);
+		vdev->fw_info = vdev->alloc_consistent(vdev->priv,
+			sizeof(struct vnic_devcmd_fw_info),
+			&vdev->fw_info_pa, (u8 *)name);
+		if (!vdev->fw_info)
+			return -ENOMEM;
+		a0 = vdev->fw_info_pa;
+		a1 = sizeof(struct vnic_devcmd_fw_info);
+		err = vnic_dev_cmd(vdev, CMD_MCPU_FW_INFO,
+				   &a0, &a1, wait);
+	}
+	*fw_info = vdev->fw_info;
+	return err;
+}
+
 static int vnic_dev_advanced_filters_cap(struct vnic_dev *vdev, u64 *args,
 		int nargs)
 {
diff --git a/drivers/net/enic/enic_ethdev.c b/drivers/net/enic/enic_ethdev.c
index ed8dda568..9b206e8f0 100644
--- a/drivers/net/enic/enic_ethdev.c
+++ b/drivers/net/enic/enic_ethdev.c
@@ -887,6 +887,26 @@ static int enicpmd_dev_udp_tunnel_port_del(struct rte_eth_dev *eth_dev,
 	return update_vxlan_port(enic, ENIC_DEFAULT_VXLAN_PORT);
 }
 
+static int enicpmd_dev_fw_version_get(struct rte_eth_dev *eth_dev,
+				      char *fw_version, size_t fw_size)
+{
+	struct vnic_devcmd_fw_info *info;
+	struct enic *enic;
+	int ret;
+
+	ENICPMD_FUNC_TRACE();
+	if (fw_version == NULL || fw_size <= 0)
+		return -EINVAL;
+	enic = pmd_priv(eth_dev);
+	ret = vnic_dev_fw_info(enic->vdev, &info);
+	if (ret)
+		return ret;
+	snprintf(fw_version, fw_size, "%s %s",
+		 info->fw_version, info->fw_build);
+	fw_version[fw_size - 1] = '\0';
+	return 0;
+}
+
 static const struct eth_dev_ops enicpmd_eth_dev_ops = {
 	.dev_configure        = enicpmd_dev_configure,
 	.dev_start            = enicpmd_dev_start,
@@ -938,6 +958,7 @@ static const struct eth_dev_ops enicpmd_eth_dev_ops = {
 	.rss_hash_update      = enicpmd_dev_rss_hash_update,
 	.udp_tunnel_port_add  = enicpmd_dev_udp_tunnel_port_add,
 	.udp_tunnel_port_del  = enicpmd_dev_udp_tunnel_port_del,
+	.fw_version_get       = enicpmd_dev_fw_version_get,
 };
 
 static int enic_parse_zero_one(const char *key,
-- 
2.16.2