From 84db00f2c04338da329e2cc9a055d5a0b82fa159 Mon Sep 17 00:00:00 2001 From: Vladimir Oltean Date: Mon, 31 May 2021 01:59:33 +0300 Subject: [PATCH] net: dsa: sja1105: allow SGMII PCS configuration to be per port The SJA1105 R and S switches have 1 SGMII port (port 4). Because there is only one such port, there is no "port" parameter in the configuration code for the SGMII PCS. However, the SJA1110 can have up to 4 SGMII ports, each with its own SGMII register map. So we need to generalize the logic. Signed-off-by: Vladimir Oltean Reviewed-by: Florian Fainelli Signed-off-by: Jakub Kicinski --- drivers/net/dsa/sja1105/sja1105_main.c | 75 ++++++++++++++++++++-------------- 1 file changed, 44 insertions(+), 31 deletions(-) diff --git a/drivers/net/dsa/sja1105/sja1105_main.c b/drivers/net/dsa/sja1105/sja1105_main.c index 4c776bd..1e4e05d 100644 --- a/drivers/net/dsa/sja1105/sja1105_main.c +++ b/drivers/net/dsa/sja1105/sja1105_main.c @@ -898,36 +898,43 @@ static int sja1105_parse_dt(struct sja1105_private *priv, return rc; } -static int sja1105_sgmii_read(struct sja1105_private *priv, int pcs_reg) +static int sja1105_sgmii_read(struct sja1105_private *priv, int port, + int pcs_reg) { const struct sja1105_regs *regs = priv->info->regs; u32 val; int rc; - rc = sja1105_xfer_u32(priv, SPI_READ, regs->sgmii + pcs_reg, &val, - NULL); + if (port != SJA1105_SGMII_PORT) + return -ENODEV; + + rc = sja1105_xfer_u32(priv, SPI_READ, regs->sgmii + pcs_reg, + &val, NULL); if (rc < 0) return rc; return val; } -static int sja1105_sgmii_write(struct sja1105_private *priv, int pcs_reg, - u16 pcs_val) +static int sja1105_sgmii_write(struct sja1105_private *priv, int port, + int pcs_reg, u16 pcs_val) { const struct sja1105_regs *regs = priv->info->regs; u32 val = pcs_val; int rc; - rc = sja1105_xfer_u32(priv, SPI_WRITE, regs->sgmii + pcs_reg, &val, - NULL); + if (port != SJA1105_SGMII_PORT) + return -ENODEV; + + rc = sja1105_xfer_u32(priv, SPI_WRITE, regs->sgmii + pcs_reg, + &val, NULL); if (rc < 0) return rc; return val; } -static void sja1105_sgmii_pcs_config(struct sja1105_private *priv, +static void sja1105_sgmii_pcs_config(struct sja1105_private *priv, int port, bool an_enabled, bool an_master) { u16 ac = SJA1105_AC_AUTONEG_MODE_SGMII; @@ -936,27 +943,29 @@ static void sja1105_sgmii_pcs_config(struct sja1105_private *priv, * stop the clock during LPI mode, make the MAC reconfigure * autonomously after PCS autoneg is done, flush the internal FIFOs. */ - sja1105_sgmii_write(priv, SJA1105_DC1, SJA1105_DC1_EN_VSMMD1 | - SJA1105_DC1_CLOCK_STOP_EN | - SJA1105_DC1_MAC_AUTO_SW | - SJA1105_DC1_INIT); + sja1105_sgmii_write(priv, port, SJA1105_DC1, + SJA1105_DC1_EN_VSMMD1 | + SJA1105_DC1_CLOCK_STOP_EN | + SJA1105_DC1_MAC_AUTO_SW | + SJA1105_DC1_INIT); /* DIGITAL_CONTROL_2: No polarity inversion for TX and RX lanes */ - sja1105_sgmii_write(priv, SJA1105_DC2, SJA1105_DC2_TX_POL_INV_DISABLE); + sja1105_sgmii_write(priv, port, SJA1105_DC2, + SJA1105_DC2_TX_POL_INV_DISABLE); /* AUTONEG_CONTROL: Use SGMII autoneg */ if (an_master) ac |= SJA1105_AC_PHY_MODE | SJA1105_AC_SGMII_LINK; - sja1105_sgmii_write(priv, SJA1105_AC, ac); + sja1105_sgmii_write(priv, port, SJA1105_AC, ac); /* BASIC_CONTROL: enable in-band AN now, if requested. Otherwise, * sja1105_sgmii_pcs_force_speed must be called later for the link * to become operational. */ if (an_enabled) - sja1105_sgmii_write(priv, MII_BMCR, + sja1105_sgmii_write(priv, port, MII_BMCR, BMCR_ANENABLE | BMCR_ANRESTART); } static void sja1105_sgmii_pcs_force_speed(struct sja1105_private *priv, - int speed) + int port, int speed) { int pcs_speed; @@ -974,7 +983,7 @@ static void sja1105_sgmii_pcs_force_speed(struct sja1105_private *priv, dev_err(priv->ds->dev, "Invalid speed %d\n", speed); return; } - sja1105_sgmii_write(priv, MII_BMCR, pcs_speed | BMCR_FULLDPLX); + sja1105_sgmii_write(priv, port, MII_BMCR, pcs_speed | BMCR_FULLDPLX); } /* Convert link speed from SJA1105 to ethtool encoding */ @@ -1115,7 +1124,8 @@ static void sja1105_mac_config(struct dsa_switch *ds, int port, } if (is_sgmii) - sja1105_sgmii_pcs_config(priv, phylink_autoneg_inband(mode), + sja1105_sgmii_pcs_config(priv, port, + phylink_autoneg_inband(mode), false); } @@ -1138,7 +1148,7 @@ static void sja1105_mac_link_up(struct dsa_switch *ds, int port, sja1105_adjust_port_config(priv, port, speed); if (sja1105_supports_sgmii(priv, port) && !phylink_autoneg_inband(mode)) - sja1105_sgmii_pcs_force_speed(priv, speed); + sja1105_sgmii_pcs_force_speed(priv, port, speed); sja1105_inhibit_tx(priv, BIT(port), false); } @@ -1191,7 +1201,7 @@ static int sja1105_mac_pcs_get_state(struct dsa_switch *ds, int port, int ais; /* Read the vendor-specific AUTONEG_INTR_STATUS register */ - ais = sja1105_sgmii_read(priv, SJA1105_AIS); + ais = sja1105_sgmii_read(priv, port, SJA1105_AIS); if (ais < 0) return ais; @@ -1873,11 +1883,11 @@ int sja1105_static_config_reload(struct sja1105_private *priv, struct ptp_system_timestamp ptp_sts_before; struct ptp_system_timestamp ptp_sts_after; int speed_mbps[SJA1105_MAX_NUM_PORTS]; + u16 bmcr[SJA1105_MAX_NUM_PORTS] = {0}; struct sja1105_mac_config_entry *mac; struct dsa_switch *ds = priv->ds; s64 t1, t2, t3, t4; s64 t12, t34; - u16 bmcr = 0; int rc, i; s64 now; @@ -1893,10 +1903,10 @@ int sja1105_static_config_reload(struct sja1105_private *priv, for (i = 0; i < ds->num_ports; i++) { speed_mbps[i] = sja1105_speed[mac[i].speed]; mac[i].speed = SJA1105_SPEED_AUTO; - } - if (sja1105_supports_sgmii(priv, SJA1105_SGMII_PORT)) - bmcr = sja1105_sgmii_read(priv, MII_BMCR); + if (sja1105_supports_sgmii(priv, i)) + bmcr[i] = sja1105_sgmii_read(priv, i, MII_BMCR); + } /* No PTP operations can run right now */ mutex_lock(&priv->ptp_data.lock); @@ -1943,27 +1953,30 @@ out_unlock_ptp: goto out; for (i = 0; i < ds->num_ports; i++) { + bool an_enabled; + rc = sja1105_adjust_port_config(priv, i, speed_mbps[i]); if (rc < 0) goto out; - } - if (sja1105_supports_sgmii(priv, SJA1105_SGMII_PORT)) { - bool an_enabled = !!(bmcr & BMCR_ANENABLE); + if (!sja1105_supports_sgmii(priv, i)) + continue; + + an_enabled = !!(bmcr[i] & BMCR_ANENABLE); - sja1105_sgmii_pcs_config(priv, an_enabled, false); + sja1105_sgmii_pcs_config(priv, i, an_enabled, false); if (!an_enabled) { int speed = SPEED_UNKNOWN; - if (bmcr & BMCR_SPEED1000) + if (bmcr[i] & BMCR_SPEED1000) speed = SPEED_1000; - else if (bmcr & BMCR_SPEED100) + else if (bmcr[i] & BMCR_SPEED100) speed = SPEED_100; else speed = SPEED_10; - sja1105_sgmii_pcs_force_speed(priv, speed); + sja1105_sgmii_pcs_force_speed(priv, i, speed); } } -- 2.7.4