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Message-ID: <20240410050809.125043-8-michal.swiatkowski@linux.intel.com>
Date: Wed, 10 Apr 2024 07:08:09 +0200
From: Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
To: intel-wired-lan@...ts.osuosl.org
Cc: netdev@...r.kernel.org,
jacob.e.keller@...el.com,
michal.kubiak@...el.com,
maciej.fijalkowski@...el.com,
sridhar.samudrala@...el.com,
przemyslaw.kitszel@...el.com,
wojciech.drewek@...el.com,
pio.raczynski@...il.com,
jiri@...dia.com,
nex.sw.ncis.osdt.itp.upstreaming@...el.com,
mateusz.polchlopek@...el.com,
Piotr Raczynski <piotr.raczynski@...el.com>,
Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
Subject: [iwl-next v2 7/7] ice: allow to activate and deactivate subfunction
From: Piotr Raczynski <piotr.raczynski@...el.com>
Use previously implemented SF aux driver. It is probe during SF
activation and remove after deactivation.
Signed-off-by: Piotr Raczynski <piotr.raczynski@...el.com>
Signed-off-by: Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
---
.../ethernet/intel/ice/devlink/devlink_port.c | 7 ++
.../ethernet/intel/ice/devlink/devlink_port.h | 4 +
drivers/net/ethernet/intel/ice/ice_sf_eth.c | 104 ++++++++++++++++++
drivers/net/ethernet/intel/ice/ice_sf_eth.h | 3 +
4 files changed, 118 insertions(+)
diff --git a/drivers/net/ethernet/intel/ice/devlink/devlink_port.c b/drivers/net/ethernet/intel/ice/devlink/devlink_port.c
index 1b933083f551..ea5148c4b7e1 100644
--- a/drivers/net/ethernet/intel/ice/devlink/devlink_port.c
+++ b/drivers/net/ethernet/intel/ice/devlink/devlink_port.c
@@ -496,6 +496,12 @@ static int
ice_activate_dynamic_port(struct ice_dynamic_port *dyn_port,
struct netlink_ext_ack *extack)
{
+ int err;
+
+ err = ice_sf_eth_activate(dyn_port, extack);
+ if (err)
+ return err;
+
dyn_port->active = true;
return 0;
@@ -509,6 +515,7 @@ ice_activate_dynamic_port(struct ice_dynamic_port *dyn_port,
*/
static void ice_deactivate_dynamic_port(struct ice_dynamic_port *dyn_port)
{
+ ice_sf_eth_deactivate(dyn_port);
dyn_port->active = false;
}
diff --git a/drivers/net/ethernet/intel/ice/devlink/devlink_port.h b/drivers/net/ethernet/intel/ice/devlink/devlink_port.h
index 1f66705e0261..409bf291a781 100644
--- a/drivers/net/ethernet/intel/ice/devlink/devlink_port.h
+++ b/drivers/net/ethernet/intel/ice/devlink/devlink_port.h
@@ -23,6 +23,10 @@ struct ice_dynamic_port {
struct devlink_port devlink_port;
struct ice_pf *pf;
struct ice_vsi *vsi;
+ /* Flavour-specific implementation data */
+ union {
+ struct ice_sf_dev *sf_dev;
+ };
};
void ice_dealloc_all_dynamic_ports(struct ice_pf *pf);
diff --git a/drivers/net/ethernet/intel/ice/ice_sf_eth.c b/drivers/net/ethernet/intel/ice/ice_sf_eth.c
index 8f0e3c5f3ea4..1583a7e7e3b3 100644
--- a/drivers/net/ethernet/intel/ice/ice_sf_eth.c
+++ b/drivers/net/ethernet/intel/ice/ice_sf_eth.c
@@ -192,6 +192,8 @@ static struct auxiliary_driver ice_sf_driver = {
.id_table = ice_sf_dev_id_table
};
+static DEFINE_XARRAY_ALLOC1(ice_sf_aux_id);
+
/**
* ice_sf_driver_register - Register new auxiliary subfunction driver
*
@@ -211,3 +213,105 @@ void ice_sf_driver_unregister(void)
{
auxiliary_driver_unregister(&ice_sf_driver);
}
+
+/**
+ * ice_sf_dev_release - Release device associated with auxiliary device
+ * @device: pointer to the device
+ *
+ * Since most of the code for subfunction deactivation is handled in
+ * the remove handler, here just free tracking resources.
+ */
+static void ice_sf_dev_release(struct device *device)
+{
+ struct auxiliary_device *adev = to_auxiliary_dev(device);
+ struct ice_sf_dev *sf_dev = ice_adev_to_sf_dev(adev);
+
+ xa_erase(&ice_sf_aux_id, adev->id);
+ kfree(sf_dev);
+}
+
+/**
+ * ice_sf_eth_activate - Activate Ethernet subfunction port
+ * @dyn_port: the dynamic port instance for this subfunction
+ * @extack: extack for reporting error messages
+ *
+ * Activate the dynamic port as an Ethernet subfunction. Setup the netdev
+ * resources associated and initialize the auxiliary device.
+ *
+ * Return: zero on success or an error code on failure.
+ */
+int
+ice_sf_eth_activate(struct ice_dynamic_port *dyn_port,
+ struct netlink_ext_ack *extack)
+{
+ struct ice_pf *pf = dyn_port->pf;
+ struct ice_sf_dev *sf_dev;
+ struct pci_dev *pdev;
+ int err;
+ u32 id;
+
+ err = xa_alloc(&ice_sf_aux_id, &id, NULL, xa_limit_32b,
+ GFP_KERNEL);
+ if (err) {
+ NL_SET_ERR_MSG_MOD(extack, "Could not allocate subfunction ID");
+ return err;
+ }
+
+ sf_dev = kzalloc(sizeof(*sf_dev), GFP_KERNEL);
+ if (!sf_dev) {
+ err = -ENOMEM;
+ NL_SET_ERR_MSG_MOD(extack, "Could not allocate sf_dev memory");
+ goto xa_erase;
+ }
+ pdev = pf->pdev;
+
+ sf_dev->dyn_port = dyn_port;
+ sf_dev->adev.id = id;
+ sf_dev->adev.name = "sf";
+ sf_dev->adev.dev.release = ice_sf_dev_release;
+ sf_dev->adev.dev.parent = &pdev->dev;
+
+ err = auxiliary_device_init(&sf_dev->adev);
+ if (err) {
+ NL_SET_ERR_MSG_MOD(extack, "Failed to initialize auxiliary device");
+ goto sf_dev_free;
+ }
+
+ err = auxiliary_device_add(&sf_dev->adev);
+ if (err) {
+ NL_SET_ERR_MSG_MOD(extack, "Auxiliary device failed to probe");
+ goto aux_dev_uninit;
+ }
+
+ dyn_port->sf_dev = sf_dev;
+
+ return 0;
+
+aux_dev_uninit:
+ auxiliary_device_uninit(&sf_dev->adev);
+sf_dev_free:
+ kfree(sf_dev);
+xa_erase:
+ xa_erase(&ice_sf_aux_id, id);
+
+ return err;
+}
+
+/**
+ * ice_sf_eth_deactivate - Deactivate Ethernet subfunction port
+ * @dyn_port: the dynamic port instance for this subfunction
+ *
+ * Deactivate the Ethernet subfunction, removing its auxiliary device and the
+ * associated resources.
+ */
+void ice_sf_eth_deactivate(struct ice_dynamic_port *dyn_port)
+{
+ struct ice_sf_dev *sf_dev = dyn_port->sf_dev;
+
+ if (sf_dev) {
+ auxiliary_device_delete(&sf_dev->adev);
+ auxiliary_device_uninit(&sf_dev->adev);
+ }
+
+ dyn_port->sf_dev = NULL;
+}
diff --git a/drivers/net/ethernet/intel/ice/ice_sf_eth.h b/drivers/net/ethernet/intel/ice/ice_sf_eth.h
index e972c50f96c9..c558cad0a183 100644
--- a/drivers/net/ethernet/intel/ice/ice_sf_eth.h
+++ b/drivers/net/ethernet/intel/ice/ice_sf_eth.h
@@ -27,4 +27,7 @@ ice_sf_dev *ice_adev_to_sf_dev(struct auxiliary_device *adev)
int ice_sf_driver_register(void);
void ice_sf_driver_unregister(void);
+int ice_sf_eth_activate(struct ice_dynamic_port *dyn_port,
+ struct netlink_ext_ack *extack);
+void ice_sf_eth_deactivate(struct ice_dynamic_port *dyn_port);
#endif /* _ICE_SF_ETH_H_ */
--
2.42.0
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