From: Piergiorgio Beruto <piergiorgio.beruto@gmail.com>
To: Andrew Lunn <andrew@lunn.ch>,
Heiner Kallweit <hkallweit1@gmail.com>,
Russell King <linux@armlinux.org.uk>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>
Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
Oleksij Rempel <o.rempel@pengutronix.de>,
mailhol.vincent@wanadoo.fr, sudheer.mogilappagari@intel.com,
sbhatta@marvell.com, linux-doc@vger.kernel.org,
wangjie125@huawei.com, corbet@lwn.net, lkp@intel.com,
gal@nvidia.com, gustavoars@kernel.org, bagasdotme@gmail.com
Subject: [PATCH v4 net-next 3/5] drivers/net/phy: add connection between ethtool and phylib for PLCA
Date: Mon, 9 Jan 2023 18:00:10 +0100 [thread overview]
Message-ID: <231f9bd7697c0700af37b8a2292bc1a21dd6fef0.1673282912.git.piergiorgio.beruto@gmail.com> (raw)
In-Reply-To: <cover.1673282912.git.piergiorgio.beruto@gmail.com>
This patch adds the required connection between netlink ethtool and
phylib to resolve PLCA get/set config and get status messages.
Signed-off-by: Piergiorgio Beruto <piergiorgio.beruto@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
---
drivers/net/phy/phy.c | 192 +++++++++++++++++++++++++++++++++++
drivers/net/phy/phy_device.c | 3 +
include/linux/phy.h | 7 ++
3 files changed, 202 insertions(+)
diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index e5b6cb1a77f9..3378ca4f49b6 100644
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -543,6 +543,198 @@ int phy_ethtool_get_stats(struct phy_device *phydev,
}
EXPORT_SYMBOL(phy_ethtool_get_stats);
+/**
+ * phy_ethtool_get_plca_cfg - Get PLCA RS configuration
+ * @phydev: the phy_device struct
+ * @plca_cfg: where to store the retrieved configuration
+ *
+ * Retrieve the PLCA configuration from the PHY. Return 0 on success or a
+ * negative value if an error occurred.
+ */
+int phy_ethtool_get_plca_cfg(struct phy_device *phydev,
+ struct phy_plca_cfg *plca_cfg)
+{
+ int ret;
+
+ if (!phydev->drv) {
+ ret = -EIO;
+ goto out;
+ }
+
+ if (!phydev->drv->get_plca_cfg) {
+ ret = -EOPNOTSUPP;
+ goto out;
+ }
+
+ mutex_lock(&phydev->lock);
+ ret = phydev->drv->get_plca_cfg(phydev, plca_cfg);
+
+ mutex_unlock(&phydev->lock);
+out:
+ return ret;
+}
+
+/**
+ * plca_check_valid - Check PLCA configuration before enabling
+ * @phydev: the phy_device struct
+ * @plca_cfg: current PLCA configuration
+ * @extack: extack for reporting useful error messages
+ *
+ * Checks whether the PLCA and PHY configuration are consistent and it is safe
+ * to enable PLCA. Returns 0 on success or a negative value if the PLCA or PHY
+ * configuration is not consistent.
+ */
+static int plca_check_valid(struct phy_device *phydev,
+ const struct phy_plca_cfg *plca_cfg,
+ struct netlink_ext_ack *extack)
+{
+ int ret = 0;
+
+ if (!linkmode_test_bit(ETHTOOL_LINK_MODE_10baseT1S_P2MP_Half_BIT,
+ phydev->advertising)) {
+ ret = -EOPNOTSUPP;
+ NL_SET_ERR_MSG(extack,
+ "Point to Multi-Point mode is not enabled");
+ } else if (plca_cfg->node_id >= 255) {
+ NL_SET_ERR_MSG(extack, "PLCA node ID is not set");
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
+
+/**
+ * phy_ethtool_set_plca_cfg - Set PLCA RS configuration
+ * @phydev: the phy_device struct
+ * @plca_cfg: new PLCA configuration to apply
+ * @extack: extack for reporting useful error messages
+ *
+ * Sets the PLCA configuration in the PHY. Return 0 on success or a
+ * negative value if an error occurred.
+ */
+int phy_ethtool_set_plca_cfg(struct phy_device *phydev,
+ const struct phy_plca_cfg *plca_cfg,
+ struct netlink_ext_ack *extack)
+{
+ struct phy_plca_cfg *curr_plca_cfg;
+ int ret;
+
+ if (!phydev->drv) {
+ ret = -EIO;
+ goto out;
+ }
+
+ if (!phydev->drv->set_plca_cfg ||
+ !phydev->drv->get_plca_cfg) {
+ ret = -EOPNOTSUPP;
+ goto out;
+ }
+
+ curr_plca_cfg = kmalloc(sizeof(*curr_plca_cfg), GFP_KERNEL);
+ if (!curr_plca_cfg) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ mutex_lock(&phydev->lock);
+
+ ret = phydev->drv->get_plca_cfg(phydev, curr_plca_cfg);
+ if (ret)
+ goto out_drv;
+
+ if (curr_plca_cfg->enabled < 0 && plca_cfg->enabled >= 0) {
+ NL_SET_ERR_MSG(extack,
+ "PHY does not support changing the PLCA 'enable' attribute");
+ ret = -EINVAL;
+ goto out_drv;
+ }
+
+ if (curr_plca_cfg->node_id < 0 && plca_cfg->node_id >= 0) {
+ NL_SET_ERR_MSG(extack,
+ "PHY does not support changing the PLCA 'local node ID' attribute");
+ ret = -EINVAL;
+ goto out_drv;
+ }
+
+ if (curr_plca_cfg->node_cnt < 0 && plca_cfg->node_cnt >= 0) {
+ NL_SET_ERR_MSG(extack,
+ "PHY does not support changing the PLCA 'node count' attribute");
+ ret = -EINVAL;
+ goto out_drv;
+ }
+
+ if (curr_plca_cfg->to_tmr < 0 && plca_cfg->to_tmr >= 0) {
+ NL_SET_ERR_MSG(extack,
+ "PHY does not support changing the PLCA 'TO timer' attribute");
+ ret = -EINVAL;
+ goto out_drv;
+ }
+
+ if (curr_plca_cfg->burst_cnt < 0 && plca_cfg->burst_cnt >= 0) {
+ NL_SET_ERR_MSG(extack,
+ "PHY does not support changing the PLCA 'burst count' attribute");
+ ret = -EINVAL;
+ goto out_drv;
+ }
+
+ if (curr_plca_cfg->burst_tmr < 0 && plca_cfg->burst_tmr >= 0) {
+ NL_SET_ERR_MSG(extack,
+ "PHY does not support changing the PLCA 'burst timer' attribute");
+ ret = -EINVAL;
+ goto out_drv;
+ }
+
+ // if enabling PLCA, perform a few sanity checks
+ if (plca_cfg->enabled > 0) {
+ // allow setting node_id concurrently with enabled
+ if (plca_cfg->node_id >= 0)
+ curr_plca_cfg->node_id = plca_cfg->node_id;
+
+ ret = plca_check_valid(phydev, curr_plca_cfg, extack);
+ if (ret)
+ goto out_drv;
+ }
+
+ ret = phydev->drv->set_plca_cfg(phydev, plca_cfg);
+
+out_drv:
+ kfree(curr_plca_cfg);
+ mutex_unlock(&phydev->lock);
+out:
+ return ret;
+}
+
+/**
+ * phy_ethtool_get_plca_status - Get PLCA RS status information
+ * @phydev: the phy_device struct
+ * @plca_st: where to store the retrieved status information
+ *
+ * Retrieve the PLCA status information from the PHY. Return 0 on success or a
+ * negative value if an error occurred.
+ */
+int phy_ethtool_get_plca_status(struct phy_device *phydev,
+ struct phy_plca_status *plca_st)
+{
+ int ret;
+
+ if (!phydev->drv) {
+ ret = -EIO;
+ goto out;
+ }
+
+ if (!phydev->drv->get_plca_status) {
+ ret = -EOPNOTSUPP;
+ goto out;
+ }
+
+ mutex_lock(&phydev->lock);
+ ret = phydev->drv->get_plca_status(phydev, plca_st);
+
+ mutex_unlock(&phydev->lock);
+out:
+ return ret;
+}
+
/**
* phy_start_cable_test - Start a cable test
*
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index 8e48b3cec5e7..44bd06be9691 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -3276,6 +3276,9 @@ static const struct ethtool_phy_ops phy_ethtool_phy_ops = {
.get_sset_count = phy_ethtool_get_sset_count,
.get_strings = phy_ethtool_get_strings,
.get_stats = phy_ethtool_get_stats,
+ .get_plca_cfg = phy_ethtool_get_plca_cfg,
+ .set_plca_cfg = phy_ethtool_set_plca_cfg,
+ .get_plca_status = phy_ethtool_get_plca_status,
.start_cable_test = phy_start_cable_test,
.start_cable_test_tdr = phy_start_cable_test_tdr,
};
diff --git a/include/linux/phy.h b/include/linux/phy.h
index 1e87d3f05209..bcaf1dfd0687 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -1846,6 +1846,13 @@ int phy_ethtool_get_strings(struct phy_device *phydev, u8 *data);
int phy_ethtool_get_sset_count(struct phy_device *phydev);
int phy_ethtool_get_stats(struct phy_device *phydev,
struct ethtool_stats *stats, u64 *data);
+int phy_ethtool_get_plca_cfg(struct phy_device *phydev,
+ struct phy_plca_cfg *plca_cfg);
+int phy_ethtool_set_plca_cfg(struct phy_device *phydev,
+ const struct phy_plca_cfg *plca_cfg,
+ struct netlink_ext_ack *extack);
+int phy_ethtool_get_plca_status(struct phy_device *phydev,
+ struct phy_plca_status *plca_st);
static inline int phy_package_read(struct phy_device *phydev, u32 regnum)
{
--
2.37.4
next prev parent reply other threads:[~2023-01-09 17:01 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-09 16:59 [PATCH v4 net-next 0/5] add PLCA RS support and onsemi NCN26000 Piergiorgio Beruto
2023-01-09 16:59 ` [PATCH v4 net-next 1/5] net/ethtool: add netlink interface for the PLCA RS Piergiorgio Beruto
2023-01-09 16:59 ` [PATCH v4 net-next 2/5] drivers/net/phy: add the link modes for the 10BASE-T1S Ethernet PHY Piergiorgio Beruto
2023-01-09 17:00 ` Piergiorgio Beruto [this message]
2023-01-09 17:00 ` [PATCH v4 net-next 4/5] drivers/net/phy: add helpers to get/set PLCA configuration Piergiorgio Beruto
2023-01-09 17:00 ` [PATCH v4 net-next 5/5] drivers/net/phy: add driver for the onsemi NCN26000 10BASE-T1S PHY Piergiorgio Beruto
2023-01-11 9:10 ` [PATCH v4 net-next 0/5] add PLCA RS support and onsemi NCN26000 patchwork-bot+netdevbpf
-- strict thread matches above, loose matches on Subject: below --
2022-12-06 12:52 Piergiorgio Beruto
2022-12-06 12:53 ` [PATCH v4 net-next 3/5] drivers/net/phy: add connection between ethtool and phylib for PLCA Piergiorgio Beruto
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