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Date: Wed, 06 Apr 2022 16:06:44 +0100
From: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
To: Florian Fainelli <f.fainelli@...il.com>
Cc: Andrew Lunn <andrew@...n.ch>,
Vivien Didelot <vivien.didelot@...il.com>,
Vladimir Oltean <olteanv@...il.com>,
"David S. Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org
Subject: [PATCH RFC net-next] net: dsa: b53: convert to phylink_pcs
Convert B53 to use phylink_pcs for the serdes rather than hooking it
into the MAC-layer callbacks.
Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
---
Hi Florian,
Please can you test this patch? Thanks.
drivers/net/dsa/b53/b53_common.c | 38 ++++++-----------------
drivers/net/dsa/b53/b53_priv.h | 24 ++++++++-------
drivers/net/dsa/b53/b53_serdes.c | 52 +++++++++++++++++++++-----------
drivers/net/dsa/b53/b53_serdes.h | 6 ----
drivers/net/dsa/b53/b53_srab.c | 3 --
5 files changed, 57 insertions(+), 66 deletions(-)
diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index 77501f9c5915..9c7abe4ee51a 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -1354,46 +1354,27 @@ static void b53_phylink_get_caps(struct dsa_switch *ds, int port,
config->legacy_pre_march2020 = false;
}
-int b53_phylink_mac_link_state(struct dsa_switch *ds, int port,
- struct phylink_link_state *state)
+static struct phylink_pcs *b53_phylink_mac_select_pcs(struct dsa_switch *ds,
+ int port,
+ phy_interface_t interface)
{
struct b53_device *dev = ds->priv;
- int ret = -EOPNOTSUPP;
- if ((phy_interface_mode_is_8023z(state->interface) ||
- state->interface == PHY_INTERFACE_MODE_SGMII) &&
- dev->ops->serdes_link_state)
- ret = dev->ops->serdes_link_state(dev, port, state);
+ if (dev->ports[port].pcs.pcs.ops &&
+ (phy_interface_mode_is_8023z(interface) ||
+ interface == PHY_INTERFACE_MODE_SGMII))
+ return &dev->ports[port].pcs.pcs;
- return ret;
+ return NULL;
}
-EXPORT_SYMBOL(b53_phylink_mac_link_state);
void b53_phylink_mac_config(struct dsa_switch *ds, int port,
unsigned int mode,
const struct phylink_link_state *state)
{
- struct b53_device *dev = ds->priv;
-
- if (mode == MLO_AN_PHY || mode == MLO_AN_FIXED)
- return;
-
- if ((phy_interface_mode_is_8023z(state->interface) ||
- state->interface == PHY_INTERFACE_MODE_SGMII) &&
- dev->ops->serdes_config)
- dev->ops->serdes_config(dev, port, mode, state);
}
EXPORT_SYMBOL(b53_phylink_mac_config);
-void b53_phylink_mac_an_restart(struct dsa_switch *ds, int port)
-{
- struct b53_device *dev = ds->priv;
-
- if (dev->ops->serdes_an_restart)
- dev->ops->serdes_an_restart(dev, port);
-}
-EXPORT_SYMBOL(b53_phylink_mac_an_restart);
-
void b53_phylink_mac_link_down(struct dsa_switch *ds, int port,
unsigned int mode,
phy_interface_t interface)
@@ -2269,9 +2250,8 @@ static const struct dsa_switch_ops b53_switch_ops = {
.phy_write = b53_phy_write16,
.adjust_link = b53_adjust_link,
.phylink_get_caps = b53_phylink_get_caps,
- .phylink_mac_link_state = b53_phylink_mac_link_state,
+ .phylink_mac_select_pcs = b53_phylink_mac_select_pcs,
.phylink_mac_config = b53_phylink_mac_config,
- .phylink_mac_an_restart = b53_phylink_mac_an_restart,
.phylink_mac_link_down = b53_phylink_mac_link_down,
.phylink_mac_link_up = b53_phylink_mac_link_up,
.port_enable = b53_enable_port,
diff --git a/drivers/net/dsa/b53/b53_priv.h b/drivers/net/dsa/b53/b53_priv.h
index 3085b6cc7d40..83cdca443567 100644
--- a/drivers/net/dsa/b53/b53_priv.h
+++ b/drivers/net/dsa/b53/b53_priv.h
@@ -21,7 +21,7 @@
#include <linux/kernel.h>
#include <linux/mutex.h>
-#include <linux/phy.h>
+#include <linux/phylink.h>
#include <linux/etherdevice.h>
#include <net/dsa.h>
@@ -29,7 +29,6 @@
struct b53_device;
struct net_device;
-struct phylink_link_state;
struct b53_io_ops {
int (*read8)(struct b53_device *dev, u8 page, u8 reg, u8 *value);
@@ -49,12 +48,6 @@ struct b53_io_ops {
void (*phylink_get_caps)(struct b53_device *dev, int port,
struct phylink_config *config);
u8 (*serdes_map_lane)(struct b53_device *dev, int port);
- int (*serdes_link_state)(struct b53_device *dev, int port,
- struct phylink_link_state *state);
- void (*serdes_config)(struct b53_device *dev, int port,
- unsigned int mode,
- const struct phylink_link_state *state);
- void (*serdes_an_restart)(struct b53_device *dev, int port);
void (*serdes_link_set)(struct b53_device *dev, int port,
unsigned int mode, phy_interface_t interface,
bool link_up);
@@ -85,10 +78,22 @@ enum {
BCM7278_DEVICE_ID = 0x7278,
};
+struct b53_pcs {
+ struct phylink_pcs pcs;
+ struct b53_device *dev;
+ int port;
+};
+
+static inline struct b53_pcs *pcs_to_b53_pcs(struct phylink_pcs *pcs)
+{
+ return container_of(pcs, struct b53_pcs, pcs);
+}
+
#define B53_N_PORTS 9
#define B53_N_PORTS_25 6
struct b53_port {
+ struct b53_pcs pcs;
u16 vlan_ctl_mask;
struct ethtool_eee eee;
};
@@ -336,12 +341,9 @@ int b53_br_flags(struct dsa_switch *ds, int port,
struct netlink_ext_ack *extack);
int b53_setup_devlink_resources(struct dsa_switch *ds);
void b53_port_event(struct dsa_switch *ds, int port);
-int b53_phylink_mac_link_state(struct dsa_switch *ds, int port,
- struct phylink_link_state *state);
void b53_phylink_mac_config(struct dsa_switch *ds, int port,
unsigned int mode,
const struct phylink_link_state *state);
-void b53_phylink_mac_an_restart(struct dsa_switch *ds, int port);
void b53_phylink_mac_link_down(struct dsa_switch *ds, int port,
unsigned int mode,
phy_interface_t interface);
diff --git a/drivers/net/dsa/b53/b53_serdes.c b/drivers/net/dsa/b53/b53_serdes.c
index 555e5b372321..32af78f1438b 100644
--- a/drivers/net/dsa/b53/b53_serdes.c
+++ b/drivers/net/dsa/b53/b53_serdes.c
@@ -60,31 +60,40 @@ static u16 b53_serdes_read(struct b53_device *dev, u8 lane,
return b53_serdes_read_blk(dev, offset, block);
}
-void b53_serdes_config(struct b53_device *dev, int port, unsigned int mode,
- const struct phylink_link_state *state)
+static int b53_serdes_config(struct phylink_pcs *pcs, unsigned int mode,
+ phy_interface_t interface,
+ const unsigned long *advertising,
+ bool permit_pause_to_mac)
{
- u8 lane = b53_serdes_map_lane(dev, port);
+ struct b53_device *dev = pcs_to_b53_pcs(pcs)->dev;
+ int port = pcs_to_b53_pcs(pcs)->port;
u16 reg;
+ u8 lane;
+ lane = b53_serdes_map_lane(dev, port);
if (lane == B53_INVALID_LANE)
- return;
+ return 0;
reg = b53_serdes_read(dev, lane, B53_SERDES_DIGITAL_CONTROL(1),
SERDES_DIGITAL_BLK);
- if (state->interface == PHY_INTERFACE_MODE_1000BASEX)
+ if (interface == PHY_INTERFACE_MODE_1000BASEX)
reg |= FIBER_MODE_1000X;
else
reg &= ~FIBER_MODE_1000X;
b53_serdes_write(dev, lane, B53_SERDES_DIGITAL_CONTROL(1),
SERDES_DIGITAL_BLK, reg);
+
+ return 0;
}
-EXPORT_SYMBOL(b53_serdes_config);
-void b53_serdes_an_restart(struct b53_device *dev, int port)
+static void b53_serdes_an_restart(struct phylink_pcs *pcs)
{
- u8 lane = b53_serdes_map_lane(dev, port);
+ struct b53_device *dev = pcs_to_b53_pcs(pcs)->dev;
+ int port = pcs_to_b53_pcs(pcs)->port;
u16 reg;
+ u8 lane;
+ lane = b53_serdes_map_lane(dev, port);
if (lane == B53_INVALID_LANE)
return;
@@ -94,16 +103,20 @@ void b53_serdes_an_restart(struct b53_device *dev, int port)
b53_serdes_write(dev, lane, B53_SERDES_MII_REG(MII_BMCR),
SERDES_MII_BLK, reg);
}
-EXPORT_SYMBOL(b53_serdes_an_restart);
-int b53_serdes_link_state(struct b53_device *dev, int port,
- struct phylink_link_state *state)
+static void b53_serdes_get_state(struct phylink_pcs *pcs,
+ struct phylink_link_state *state)
{
- u8 lane = b53_serdes_map_lane(dev, port);
+ struct b53_device *dev = pcs_to_b53_pcs(pcs)->dev;
+ int port = pcs_to_b53_pcs(pcs)->port;
u16 dig, bmsr;
+ u8 lane;
- if (lane == B53_INVALID_LANE)
- return 1;
+ lane = b53_serdes_map_lane(dev, port);
+ if (lane == B53_INVALID_LANE) {
+ state->link = false;
+ return;
+ }
dig = b53_serdes_read(dev, lane, B53_SERDES_DIGITAL_STATUS,
SERDES_DIGITAL_BLK);
@@ -133,10 +146,7 @@ int b53_serdes_link_state(struct b53_device *dev, int port,
state->pause |= MLO_PAUSE_RX;
if (dig & PAUSE_RESOLUTION_TX_SIDE)
state->pause |= MLO_PAUSE_TX;
-
- return 0;
}
-EXPORT_SYMBOL(b53_serdes_link_state);
void b53_serdes_link_set(struct b53_device *dev, int port, unsigned int mode,
phy_interface_t interface, bool link_up)
@@ -158,6 +168,12 @@ void b53_serdes_link_set(struct b53_device *dev, int port, unsigned int mode,
}
EXPORT_SYMBOL(b53_serdes_link_set);
+static const struct phylink_pcs_ops b53_pcs_ops = {
+ .pcs_get_state = b53_serdes_get_state,
+ .pcs_config = b53_serdes_config,
+ .pcs_an_restart = b53_serdes_an_restart,
+};
+
void b53_serdes_phylink_get_caps(struct b53_device *dev, int port,
struct phylink_config *config)
{
@@ -212,6 +228,8 @@ int b53_serdes_init(struct b53_device *dev, int port)
(id0 >> SERDES_ID0_REV_NUM_SHIFT) & SERDES_ID0_REV_NUM_MASK,
(u32)msb << 16 | lsb);
+ dev->ports[port].pcs.pcs.ops = &b53_pcs_ops;
+
return 0;
}
EXPORT_SYMBOL(b53_serdes_init);
diff --git a/drivers/net/dsa/b53/b53_serdes.h b/drivers/net/dsa/b53/b53_serdes.h
index f47d5caa7557..c372ba588994 100644
--- a/drivers/net/dsa/b53/b53_serdes.h
+++ b/drivers/net/dsa/b53/b53_serdes.h
@@ -107,12 +107,6 @@ static inline u8 b53_serdes_map_lane(struct b53_device *dev, int port)
return dev->ops->serdes_map_lane(dev, port);
}
-int b53_serdes_get_link(struct b53_device *dev, int port);
-int b53_serdes_link_state(struct b53_device *dev, int port,
- struct phylink_link_state *state);
-void b53_serdes_config(struct b53_device *dev, int port, unsigned int mode,
- const struct phylink_link_state *state);
-void b53_serdes_an_restart(struct b53_device *dev, int port);
void b53_serdes_link_set(struct b53_device *dev, int port, unsigned int mode,
phy_interface_t interface, bool link_up);
void b53_serdes_phylink_get_caps(struct b53_device *dev, int port,
diff --git a/drivers/net/dsa/b53/b53_srab.c b/drivers/net/dsa/b53/b53_srab.c
index c51b716657db..af5172c4660f 100644
--- a/drivers/net/dsa/b53/b53_srab.c
+++ b/drivers/net/dsa/b53/b53_srab.c
@@ -492,9 +492,6 @@ static const struct b53_io_ops b53_srab_ops = {
.phylink_get_caps = b53_srab_phylink_get_caps,
#if IS_ENABLED(CONFIG_B53_SERDES)
.serdes_map_lane = b53_srab_serdes_map_lane,
- .serdes_link_state = b53_serdes_link_state,
- .serdes_config = b53_serdes_config,
- .serdes_an_restart = b53_serdes_an_restart,
.serdes_link_set = b53_serdes_link_set,
#endif
};
--
2.30.2
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