120 lines
3.9 KiB
Diff
120 lines
3.9 KiB
Diff
From c22d8240fcd73a1c3ec8dcb055bd583fb970c375 Mon Sep 17 00:00:00 2001
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From: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>
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Date: Wed, 10 Apr 2024 20:42:43 +0100
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Subject: [PATCH 2/2] net: dsa: allow DSA switch drivers to provide their own
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phylink mac ops
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Rather than having a shim for each and every phylink MAC operation,
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allow DSA switch drivers to provide their own ops structure. When a
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DSA driver provides the phylink MAC operations, the shimmed ops must
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not be provided, so fail an attempt to register a switch with both
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the phylink_mac_ops in struct dsa_switch and the phylink_mac_*
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operations populated in dsa_switch_ops populated.
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Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
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Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
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Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
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Link: https://lore.kernel.org/r/E1rudqF-006K9H-Cc@rmk-PC.armlinux.org.uk
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Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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---
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include/net/dsa.h | 5 +++++
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net/dsa/dsa.c | 11 +++++++++++
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net/dsa/port.c | 26 ++++++++++++++++++++------
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3 files changed, 36 insertions(+), 6 deletions(-)
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--- a/include/net/dsa.h
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+++ b/include/net/dsa.h
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@@ -458,6 +458,11 @@ struct dsa_switch {
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const struct dsa_switch_ops *ops;
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/*
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+ * Allow a DSA switch driver to override the phylink MAC ops
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+ */
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+ const struct phylink_mac_ops *phylink_mac_ops;
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+
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+ /*
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* Slave mii_bus and devices for the individual ports.
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*/
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u32 phys_mii_mask;
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--- a/net/dsa/dsa.c
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+++ b/net/dsa/dsa.c
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@@ -1510,6 +1510,17 @@ static int dsa_switch_probe(struct dsa_s
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if (!ds->num_ports)
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return -EINVAL;
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+ if (ds->phylink_mac_ops) {
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+ if (ds->ops->phylink_mac_select_pcs ||
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+ ds->ops->phylink_mac_prepare ||
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+ ds->ops->phylink_mac_config ||
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+ ds->ops->phylink_mac_finish ||
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+ ds->ops->phylink_mac_link_down ||
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+ ds->ops->phylink_mac_link_up ||
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+ ds->ops->adjust_link)
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+ return -EINVAL;
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+ }
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+
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if (np) {
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err = dsa_switch_parse_of(ds, np);
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if (err)
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--- a/net/dsa/port.c
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+++ b/net/dsa/port.c
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@@ -1677,6 +1677,7 @@ static const struct phylink_mac_ops dsa_
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int dsa_port_phylink_create(struct dsa_port *dp)
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{
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+ const struct phylink_mac_ops *mac_ops;
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struct dsa_switch *ds = dp->ds;
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phy_interface_t mode;
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struct phylink *pl;
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@@ -1700,8 +1701,12 @@ int dsa_port_phylink_create(struct dsa_p
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}
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}
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- pl = phylink_create(&dp->pl_config, of_fwnode_handle(dp->dn),
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- mode, &dsa_port_phylink_mac_ops);
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+ mac_ops = &dsa_port_phylink_mac_ops;
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+ if (ds->phylink_mac_ops)
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+ mac_ops = ds->phylink_mac_ops;
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+
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+ pl = phylink_create(&dp->pl_config, of_fwnode_handle(dp->dn), mode,
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+ mac_ops);
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if (IS_ERR(pl)) {
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pr_err("error creating PHYLINK: %ld\n", PTR_ERR(pl));
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return PTR_ERR(pl);
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@@ -1967,12 +1972,23 @@ static void dsa_shared_port_validate_of(
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dn, dsa_port_is_cpu(dp) ? "CPU" : "DSA", dp->index);
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}
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+static void dsa_shared_port_link_down(struct dsa_port *dp)
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+{
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+ struct dsa_switch *ds = dp->ds;
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+
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+ if (ds->phylink_mac_ops && ds->phylink_mac_ops->mac_link_down)
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+ ds->phylink_mac_ops->mac_link_down(&dp->pl_config, MLO_AN_FIXED,
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+ PHY_INTERFACE_MODE_NA);
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+ else if (ds->ops->phylink_mac_link_down)
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+ ds->ops->phylink_mac_link_down(ds, dp->index, MLO_AN_FIXED,
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+ PHY_INTERFACE_MODE_NA);
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+}
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+
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int dsa_shared_port_link_register_of(struct dsa_port *dp)
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{
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struct dsa_switch *ds = dp->ds;
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bool missing_link_description;
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bool missing_phy_mode;
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- int port = dp->index;
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dsa_shared_port_validate_of(dp, &missing_phy_mode,
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&missing_link_description);
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@@ -1988,9 +2004,7 @@ int dsa_shared_port_link_register_of(str
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"Skipping phylink registration for %s port %d\n",
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dsa_port_is_cpu(dp) ? "CPU" : "DSA", dp->index);
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} else {
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- if (ds->ops->phylink_mac_link_down)
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- ds->ops->phylink_mac_link_down(ds, port,
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- MLO_AN_FIXED, PHY_INTERFACE_MODE_NA);
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+ dsa_shared_port_link_down(dp);
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return dsa_shared_port_phylink_register(dp);
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}
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