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Date: Mon, 11 Apr 2022 10:46:27 +0100
From: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
To: Landen Chao <Landen.Chao@...iatek.com>,
DENG Qingfang <dqfext@...il.com>,
Sean Wang <sean.wang@...iatek.com>
Cc: Andrew Lunn <andrew@...n.ch>,
Vivien Didelot <vivien.didelot@...il.com>,
Florian Fainelli <f.fainelli@...il.com>,
Vladimir Oltean <olteanv@...il.com>,
"David S. Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Matthias Brugger <matthias.bgg@...il.com>,
netdev@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-mediatek@...ts.infradead.org
Subject: [PATCH net-next v2 7/9] net: dsa: mt7530: partially convert to
phylink_pcs
Partially convert the mt7530 driver to use phylink's PCS support. This
is a partial implementation as we don't move anything into the
pcs_config method yet - this driver supports SGMII or 1000BASE-X
without in-band.
Tested-by: Marek Behún <kabel@...nel.org>
Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
---
drivers/net/dsa/mt7530.c | 144 +++++++++++++++++++++++----------------
drivers/net/dsa/mt7530.h | 21 +++---
2 files changed, 95 insertions(+), 70 deletions(-)
diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
index aa7f21683a07..1c0d931973e5 100644
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -24,6 +24,11 @@
#include "mt7530.h"
+static struct mt753x_pcs *pcs_to_mt753x_pcs(struct phylink_pcs *pcs)
+{
+ return container_of(pcs, struct mt753x_pcs, pcs);
+}
+
/* String, offset, and register size in bytes if different from 4 bytes */
static const struct mt7530_mib_desc mt7530_mib[] = {
MIB_DESC(1, 0x00, "TxDrop"),
@@ -2521,12 +2526,11 @@ static int mt7531_rgmii_setup(struct mt7530_priv *priv, u32 port,
return 0;
}
-static void
-mt7531_sgmii_link_up_force(struct dsa_switch *ds, int port,
- unsigned int mode, phy_interface_t interface,
- int speed, int duplex)
+static void mt7531_pcs_link_up(struct phylink_pcs *pcs, unsigned int mode,
+ phy_interface_t interface, int speed, int duplex)
{
- struct mt7530_priv *priv = ds->priv;
+ struct mt7530_priv *priv = pcs_to_mt753x_pcs(pcs)->priv;
+ int port = pcs_to_mt753x_pcs(pcs)->port;
unsigned int val;
/* For adjusting speed and duplex of SGMII force mode. */
@@ -2552,6 +2556,9 @@ mt7531_sgmii_link_up_force(struct dsa_switch *ds, int port,
/* MT7531 SGMII 1G force mode can only work in full duplex mode,
* no matter MT7531_SGMII_FORCE_HALF_DUPLEX is set or not.
+ *
+ * The speed check is unnecessary as the MAC capabilities apply
+ * this restriction. --rmk
*/
if ((speed == SPEED_10 || speed == SPEED_100) &&
duplex != DUPLEX_FULL)
@@ -2627,9 +2634,10 @@ static int mt7531_sgmii_setup_mode_an(struct mt7530_priv *priv, int port,
return 0;
}
-static void mt7531_sgmii_restart_an(struct dsa_switch *ds, int port)
+static void mt7531_pcs_an_restart(struct phylink_pcs *pcs)
{
- struct mt7530_priv *priv = ds->priv;
+ struct mt7530_priv *priv = pcs_to_mt753x_pcs(pcs)->priv;
+ int port = pcs_to_mt753x_pcs(pcs)->port;
u32 val;
/* Only restart AN when AN is enabled */
@@ -2686,6 +2694,24 @@ mt753x_mac_config(struct dsa_switch *ds, int port, unsigned int mode,
return priv->info->mac_port_config(ds, port, mode, state->interface);
}
+static struct phylink_pcs *
+mt753x_phylink_mac_select_pcs(struct dsa_switch *ds, int port,
+ phy_interface_t interface)
+{
+ struct mt7530_priv *priv = ds->priv;
+
+ switch (interface) {
+ case PHY_INTERFACE_MODE_TRGMII:
+ case PHY_INTERFACE_MODE_SGMII:
+ case PHY_INTERFACE_MODE_1000BASEX:
+ case PHY_INTERFACE_MODE_2500BASEX:
+ return &priv->pcs[port].pcs;
+
+ default:
+ return NULL;
+ }
+}
+
static void
mt753x_phylink_mac_config(struct dsa_switch *ds, int port, unsigned int mode,
const struct phylink_link_state *state)
@@ -2747,17 +2773,6 @@ mt753x_phylink_mac_config(struct dsa_switch *ds, int port, unsigned int mode,
mt7530_write(priv, MT7530_PMCR_P(port), mcr_new);
}
-static void
-mt753x_phylink_mac_an_restart(struct dsa_switch *ds, int port)
-{
- struct mt7530_priv *priv = ds->priv;
-
- if (!priv->info->mac_pcs_an_restart)
- return;
-
- priv->info->mac_pcs_an_restart(ds, port);
-}
-
static void mt753x_phylink_mac_link_down(struct dsa_switch *ds, int port,
unsigned int mode,
phy_interface_t interface)
@@ -2767,16 +2782,13 @@ static void mt753x_phylink_mac_link_down(struct dsa_switch *ds, int port,
mt7530_clear(priv, MT7530_PMCR_P(port), PMCR_LINK_SETTINGS_MASK);
}
-static void mt753x_mac_pcs_link_up(struct dsa_switch *ds, int port,
- unsigned int mode, phy_interface_t interface,
- int speed, int duplex)
+static void mt753x_phylink_pcs_link_up(struct phylink_pcs *pcs,
+ unsigned int mode,
+ phy_interface_t interface,
+ int speed, int duplex)
{
- struct mt7530_priv *priv = ds->priv;
-
- if (!priv->info->mac_pcs_link_up)
- return;
-
- priv->info->mac_pcs_link_up(ds, port, mode, interface, speed, duplex);
+ if (pcs->ops->pcs_link_up)
+ pcs->ops->pcs_link_up(pcs, mode, interface, speed, duplex);
}
static void mt753x_phylink_mac_link_up(struct dsa_switch *ds, int port,
@@ -2789,8 +2801,6 @@ static void mt753x_phylink_mac_link_up(struct dsa_switch *ds, int port,
struct mt7530_priv *priv = ds->priv;
u32 mcr;
- mt753x_mac_pcs_link_up(ds, port, mode, interface, speed, duplex);
-
mcr = PMCR_RX_EN | PMCR_TX_EN | PMCR_FORCE_LNK;
/* MT753x MAC works in 1G full duplex mode for all up-clocked
@@ -2870,6 +2880,8 @@ mt7531_cpu_port_config(struct dsa_switch *ds, int port)
return ret;
mt7530_write(priv, MT7530_PMCR_P(port),
PMCR_CPU_PORT_SETTING(priv->id));
+ mt753x_phylink_pcs_link_up(&priv->pcs[port].pcs, MLO_AN_FIXED,
+ interface, speed, DUPLEX_FULL);
mt753x_phylink_mac_link_up(ds, port, MLO_AN_FIXED, interface, NULL,
speed, DUPLEX_FULL, true, true);
@@ -2909,16 +2921,13 @@ mt753x_phylink_validate(struct dsa_switch *ds, int port,
linkmode_and(state->advertising, state->advertising, mask);
}
-static int
-mt7530_phylink_mac_link_state(struct dsa_switch *ds, int port,
- struct phylink_link_state *state)
+static void mt7530_pcs_get_state(struct phylink_pcs *pcs,
+ struct phylink_link_state *state)
{
- struct mt7530_priv *priv = ds->priv;
+ struct mt7530_priv *priv = pcs_to_mt753x_pcs(pcs)->priv;
+ int port = pcs_to_mt753x_pcs(pcs)->port;
u32 pmsr;
- if (port < 0 || port >= MT7530_NUM_PORTS)
- return -EINVAL;
-
pmsr = mt7530_read(priv, MT7530_PMSR_P(port));
state->link = (pmsr & PMSR_LINK);
@@ -2945,8 +2954,6 @@ mt7530_phylink_mac_link_state(struct dsa_switch *ds, int port,
state->pause |= MLO_PAUSE_RX;
if (pmsr & PMSR_TX_FC)
state->pause |= MLO_PAUSE_TX;
-
- return 1;
}
static int
@@ -2988,32 +2995,49 @@ mt7531_sgmii_pcs_get_state_an(struct mt7530_priv *priv, int port,
return 0;
}
-static int
-mt7531_phylink_mac_link_state(struct dsa_switch *ds, int port,
- struct phylink_link_state *state)
+static void mt7531_pcs_get_state(struct phylink_pcs *pcs,
+ struct phylink_link_state *state)
{
- struct mt7530_priv *priv = ds->priv;
+ struct mt7530_priv *priv = pcs_to_mt753x_pcs(pcs)->priv;
+ int port = pcs_to_mt753x_pcs(pcs)->port;
if (state->interface == PHY_INTERFACE_MODE_SGMII)
- return mt7531_sgmii_pcs_get_state_an(priv, port, state);
-
- return -EOPNOTSUPP;
+ mt7531_sgmii_pcs_get_state_an(priv, port, state);
+ else
+ state->link = false;
}
-static int
-mt753x_phylink_mac_link_state(struct dsa_switch *ds, int port,
- struct phylink_link_state *state)
+static int mt753x_pcs_config(struct phylink_pcs *pcs, unsigned int mode,
+ phy_interface_t interface,
+ const unsigned long *advertising,
+ bool permit_pause_to_mac)
{
- struct mt7530_priv *priv = ds->priv;
+ return 0;
+}
- return priv->info->mac_port_get_state(ds, port, state);
+static void mt7530_pcs_an_restart(struct phylink_pcs *pcs)
+{
}
+static const struct phylink_pcs_ops mt7530_pcs_ops = {
+ .pcs_get_state = mt7530_pcs_get_state,
+ .pcs_config = mt753x_pcs_config,
+ .pcs_an_restart = mt7530_pcs_an_restart,
+};
+
+static const struct phylink_pcs_ops mt7531_pcs_ops = {
+ .pcs_get_state = mt7531_pcs_get_state,
+ .pcs_config = mt753x_pcs_config,
+ .pcs_an_restart = mt7531_pcs_an_restart,
+ .pcs_link_up = mt7531_pcs_link_up,
+};
+
static int
mt753x_setup(struct dsa_switch *ds)
{
struct mt7530_priv *priv = ds->priv;
int ret = priv->info->sw_setup(ds);
+ int i;
if (ret)
return ret;
@@ -3026,6 +3050,13 @@ mt753x_setup(struct dsa_switch *ds)
if (ret && priv->irq)
mt7530_free_irq_common(priv);
+ /* Initialise the PCS devices */
+ for (i = 0; i < priv->ds->num_ports; i++) {
+ priv->pcs[i].pcs.ops = priv->info->pcs_ops;
+ priv->pcs[i].priv = priv;
+ priv->pcs[i].port = i;
+ }
+
return ret;
}
@@ -3087,9 +3118,8 @@ static const struct dsa_switch_ops mt7530_switch_ops = {
.port_mirror_del = mt753x_port_mirror_del,
.phylink_get_caps = mt753x_phylink_get_caps,
.phylink_validate = mt753x_phylink_validate,
- .phylink_mac_link_state = mt753x_phylink_mac_link_state,
+ .phylink_mac_select_pcs = mt753x_phylink_mac_select_pcs,
.phylink_mac_config = mt753x_phylink_mac_config,
- .phylink_mac_an_restart = mt753x_phylink_mac_an_restart,
.phylink_mac_link_down = mt753x_phylink_mac_link_down,
.phylink_mac_link_up = mt753x_phylink_mac_link_up,
.get_mac_eee = mt753x_get_mac_eee,
@@ -3099,36 +3129,34 @@ static const struct dsa_switch_ops mt7530_switch_ops = {
static const struct mt753x_info mt753x_table[] = {
[ID_MT7621] = {
.id = ID_MT7621,
+ .pcs_ops = &mt7530_pcs_ops,
.sw_setup = mt7530_setup,
.phy_read = mt7530_phy_read,
.phy_write = mt7530_phy_write,
.pad_setup = mt7530_pad_clk_setup,
.mac_port_get_caps = mt7530_mac_port_get_caps,
- .mac_port_get_state = mt7530_phylink_mac_link_state,
.mac_port_config = mt7530_mac_config,
},
[ID_MT7530] = {
.id = ID_MT7530,
+ .pcs_ops = &mt7530_pcs_ops,
.sw_setup = mt7530_setup,
.phy_read = mt7530_phy_read,
.phy_write = mt7530_phy_write,
.pad_setup = mt7530_pad_clk_setup,
.mac_port_get_caps = mt7530_mac_port_get_caps,
- .mac_port_get_state = mt7530_phylink_mac_link_state,
.mac_port_config = mt7530_mac_config,
},
[ID_MT7531] = {
.id = ID_MT7531,
+ .pcs_ops = &mt7531_pcs_ops,
.sw_setup = mt7531_setup,
.phy_read = mt7531_ind_phy_read,
.phy_write = mt7531_ind_phy_write,
.pad_setup = mt7531_pad_setup,
.cpu_port_config = mt7531_cpu_port_config,
.mac_port_get_caps = mt7531_mac_port_get_caps,
- .mac_port_get_state = mt7531_phylink_mac_link_state,
.mac_port_config = mt7531_mac_config,
- .mac_pcs_an_restart = mt7531_sgmii_restart_an,
- .mac_pcs_link_up = mt7531_sgmii_link_up_force,
},
};
@@ -3186,7 +3214,7 @@ mt7530_probe(struct mdio_device *mdiodev)
if (!priv->info->sw_setup || !priv->info->pad_setup ||
!priv->info->phy_read || !priv->info->phy_write ||
!priv->info->mac_port_get_caps ||
- !priv->info->mac_port_get_state || !priv->info->mac_port_config)
+ !priv->info->mac_port_config)
return -EINVAL;
priv->id = priv->info->id;
diff --git a/drivers/net/dsa/mt7530.h b/drivers/net/dsa/mt7530.h
index 73cfd29fbb17..71e36b69b96d 100644
--- a/drivers/net/dsa/mt7530.h
+++ b/drivers/net/dsa/mt7530.h
@@ -741,6 +741,12 @@ static const char *p5_intf_modes(unsigned int p5_interface)
struct mt7530_priv;
+struct mt753x_pcs {
+ struct phylink_pcs pcs;
+ struct mt7530_priv *priv;
+ int port;
+};
+
/* struct mt753x_info - This is the main data structure for holding the specific
* part for each supported device
* @sw_setup: Holding the handler to a device initialization
@@ -752,18 +758,14 @@ struct mt7530_priv;
* port
* @mac_port_validate: Holding the way to set addition validate type for a
* certan MAC port
- * @mac_port_get_state: Holding the way getting the MAC/PCS state for a certain
- * MAC port
* @mac_port_config: Holding the way setting up the PHY attribute to a
* certain MAC port
- * @mac_pcs_an_restart Holding the way restarting PCS autonegotiation for a
- * certain MAC port
- * @mac_pcs_link_up: Holding the way setting up the PHY attribute to the pcs
- * of the certain MAC port
*/
struct mt753x_info {
enum mt753x_id id;
+ const struct phylink_pcs_ops *pcs_ops;
+
int (*sw_setup)(struct dsa_switch *ds);
int (*phy_read)(struct mt7530_priv *priv, int port, int regnum);
int (*phy_write)(struct mt7530_priv *priv, int port, int regnum, u16 val);
@@ -774,15 +776,9 @@ struct mt753x_info {
void (*mac_port_validate)(struct dsa_switch *ds, int port,
phy_interface_t interface,
unsigned long *supported);
- int (*mac_port_get_state)(struct dsa_switch *ds, int port,
- struct phylink_link_state *state);
int (*mac_port_config)(struct dsa_switch *ds, int port,
unsigned int mode,
phy_interface_t interface);
- void (*mac_pcs_an_restart)(struct dsa_switch *ds, int port);
- void (*mac_pcs_link_up)(struct dsa_switch *ds, int port,
- unsigned int mode, phy_interface_t interface,
- int speed, int duplex);
};
/* struct mt7530_priv - This is the main data structure for holding the state
@@ -824,6 +820,7 @@ struct mt7530_priv {
u8 mirror_tx;
struct mt7530_port ports[MT7530_NUM_PORTS];
+ struct mt753x_pcs pcs[MT7530_NUM_PORTS];
/* protect among processes for registers access*/
struct mutex reg_mutex;
int irq;
--
2.30.2
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