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Date: Wed, 30 Sep 2020 20:16:10 +0300
From: Ioana Ciornei <ioana.ciornei@....com>
To: davem@...emloft.net, kuba@...nel.org, netdev@...r.kernel.org
Cc: jiri@...dia.com, idosch@...dia.com,
Ioana Ciornei <ioana.ciornei@....com>
Subject: [PATCH net-next 3/4] dpaa2-eth: add basic devlink support
Add basic support in dpaa2-eth for devlink. For the moment, just
register the device with devlink, add the corresponding devlink port and
implement the .info_get() callback.
Signed-off-by: Ioana Ciornei <ioana.ciornei@....com>
---
drivers/net/ethernet/freescale/dpaa2/Makefile | 2 +-
.../freescale/dpaa2/dpaa2-eth-devlink.c | 90 +++++++++++++++++++
.../net/ethernet/freescale/dpaa2/dpaa2-eth.c | 15 ++++
.../net/ethernet/freescale/dpaa2/dpaa2-eth.h | 12 +++
4 files changed, 118 insertions(+), 1 deletion(-)
create mode 100644 drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-devlink.c
diff --git a/drivers/net/ethernet/freescale/dpaa2/Makefile b/drivers/net/ethernet/freescale/dpaa2/Makefile
index 6e7f33c956bf..146cb3540e61 100644
--- a/drivers/net/ethernet/freescale/dpaa2/Makefile
+++ b/drivers/net/ethernet/freescale/dpaa2/Makefile
@@ -6,7 +6,7 @@
obj-$(CONFIG_FSL_DPAA2_ETH) += fsl-dpaa2-eth.o
obj-$(CONFIG_FSL_DPAA2_PTP_CLOCK) += fsl-dpaa2-ptp.o
-fsl-dpaa2-eth-objs := dpaa2-eth.o dpaa2-ethtool.o dpni.o dpaa2-mac.o dpmac.o
+fsl-dpaa2-eth-objs := dpaa2-eth.o dpaa2-ethtool.o dpni.o dpaa2-mac.o dpmac.o dpaa2-eth-devlink.o
fsl-dpaa2-eth-${CONFIG_FSL_DPAA2_ETH_DCB} += dpaa2-eth-dcb.o
fsl-dpaa2-eth-${CONFIG_DEBUG_FS} += dpaa2-eth-debugfs.o
fsl-dpaa2-ptp-objs := dpaa2-ptp.o dprtc.o
diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-devlink.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-devlink.c
new file mode 100644
index 000000000000..3691981f5165
--- /dev/null
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-devlink.c
@@ -0,0 +1,90 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+#include "dpaa2-eth.h"
+/* Copyright 2020 NXP
+ */
+
+static int dpaa2_eth_dl_info_get(struct devlink *devlink,
+ struct devlink_info_req *req,
+ struct netlink_ext_ack *extack)
+{
+ struct dpaa2_eth_devlink_priv *dl_priv = devlink_priv(devlink);
+ struct dpaa2_eth_priv *priv = dl_priv->dpaa2_priv;
+ char buf[10];
+ int err;
+
+ err = devlink_info_driver_name_put(req, KBUILD_MODNAME);
+ if (err)
+ return err;
+
+ scnprintf(buf, 10, "%d.%d", priv->dpni_ver_major, priv->dpni_ver_minor);
+ err = devlink_info_version_running_put(req, "dpni", buf);
+ if (err)
+ return err;
+
+ return 0;
+}
+
+static const struct devlink_ops dpaa2_eth_devlink_ops = {
+ .info_get = dpaa2_eth_dl_info_get,
+};
+
+int dpaa2_eth_dl_register(struct dpaa2_eth_priv *priv)
+{
+ struct net_device *net_dev = priv->net_dev;
+ struct device *dev = net_dev->dev.parent;
+ struct dpaa2_eth_devlink_priv *dl_priv;
+ int err;
+
+ priv->devlink = devlink_alloc(&dpaa2_eth_devlink_ops, sizeof(*dl_priv));
+ if (!priv->devlink) {
+ dev_err(dev, "devlink_alloc failed\n");
+ return -ENOMEM;
+ }
+ dl_priv = devlink_priv(priv->devlink);
+ dl_priv->dpaa2_priv = priv;
+
+ err = devlink_register(priv->devlink, dev);
+ if (err) {
+ dev_err(dev, "devlink_register() = %d\n", err);
+ goto devlink_free;
+ }
+
+ return 0;
+
+devlink_free:
+ devlink_free(priv->devlink);
+
+ return err;
+}
+
+void dpaa2_eth_dl_unregister(struct dpaa2_eth_priv *priv)
+{
+ devlink_unregister(priv->devlink);
+ devlink_free(priv->devlink);
+}
+
+int dpaa2_eth_dl_port_add(struct dpaa2_eth_priv *priv)
+{
+ struct devlink_port *devlink_port = &priv->devlink_port;
+ struct devlink_port_attrs attrs = {};
+ int err;
+
+ attrs.flavour = DEVLINK_PORT_FLAVOUR_PHYSICAL;
+ devlink_port_attrs_set(devlink_port, &attrs);
+
+ err = devlink_port_register(priv->devlink, devlink_port, 0);
+ if (err)
+ return err;
+
+ devlink_port_type_eth_set(devlink_port, priv->net_dev);
+
+ return 0;
+}
+
+void dpaa2_eth_dl_port_del(struct dpaa2_eth_priv *priv)
+{
+ struct devlink_port *devlink_port = &priv->devlink_port;
+
+ devlink_port_type_clear(devlink_port);
+ devlink_port_unregister(devlink_port);
+}
diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
index fe4caf7aad7c..29c1c9263422 100644
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
@@ -4223,6 +4223,14 @@ static int dpaa2_eth_probe(struct fsl_mc_device *dpni_dev)
if (err)
goto err_connect_mac;
+ err = dpaa2_eth_dl_register(priv);
+ if (err)
+ goto err_dl_register;
+
+ err = dpaa2_eth_dl_port_add(priv);
+ if (err)
+ goto err_dl_port_add;
+
err = register_netdev(net_dev);
if (err < 0) {
dev_err(dev, "register_netdev() failed\n");
@@ -4237,6 +4245,10 @@ static int dpaa2_eth_probe(struct fsl_mc_device *dpni_dev)
return 0;
err_netdev_reg:
+ dpaa2_eth_dl_port_del(priv);
+err_dl_port_add:
+ dpaa2_eth_dl_unregister(priv);
+err_dl_register:
dpaa2_eth_disconnect_mac(priv);
err_connect_mac:
if (priv->do_link_poll)
@@ -4291,6 +4303,9 @@ static int dpaa2_eth_remove(struct fsl_mc_device *ls_dev)
unregister_netdev(net_dev);
+ dpaa2_eth_dl_port_del(priv);
+ dpaa2_eth_dl_unregister(priv);
+
if (priv->do_link_poll)
kthread_stop(priv->poll_thread);
else
diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h
index 6436fa3b25cb..6578c59160c3 100644
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h
@@ -11,6 +11,7 @@
#include <linux/if_vlan.h>
#include <linux/fsl/mc.h>
#include <linux/net_tstamp.h>
+#include <net/devlink.h>
#include <soc/fsl/dpaa2-io.h>
#include <soc/fsl/dpaa2-fd.h>
@@ -503,6 +504,11 @@ struct dpaa2_eth_priv {
* queue before transmit current packet.
*/
struct mutex onestep_tstamp_lock;
+ struct devlink *devlink;
+};
+
+struct dpaa2_eth_devlink_priv {
+ struct dpaa2_eth_priv *dpaa2_priv;
};
#define TX_TSTAMP 0x1
@@ -636,4 +642,10 @@ void dpaa2_eth_set_rx_taildrop(struct dpaa2_eth_priv *priv,
extern const struct dcbnl_rtnl_ops dpaa2_eth_dcbnl_ops;
+int dpaa2_eth_dl_register(struct dpaa2_eth_priv *priv);
+void dpaa2_eth_dl_unregister(struct dpaa2_eth_priv *priv);
+
+int dpaa2_eth_dl_port_add(struct dpaa2_eth_priv *priv);
+void dpaa2_eth_dl_port_del(struct dpaa2_eth_priv *priv);
+
#endif /* __DPAA2_H */
--
2.28.0
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