Re: [PATCH 1/2] net: dsa: lantiq: allow to use all GPHYs on xRX300 and xRX330

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Hi,

This looks good.

I haven't checked all the differences between the SoCs, but found some minor problems in the code for the port configuration.


On 12/3/20 11:03 PM, Aleksander Jan Bajkowski wrote:
From: Aleksander Jan Bajkowski <A.Bajkowski@xxxxxxxxxxxxxxxxxxx>

This patch allows you to use all phs on GRX300 and GRX330. The ARX300 has 3
and the GRX330 has 4 integrated PHYs connected to different ports compared
to VRX200.

Port configurations:

xRX200:
GMAC0: RGMII port
GMAC1: RGMII port
GMAC2: GPHY0 (GMII)
GMAC3: GPHY0 (MII)
GMAC4: GPHY1 (GMII)
GMAC5: GPHY1 (MII) or RGMII port

xRX300:
GMAC0: RGMII port
GMAC1: GPHY2 (GMII)
GMAC2: GPHY0 (GMII)
GMAC3: GPHY0 (MII)
GMAC4: GPHY1 (GMII)
GMAC5: GPHY1 (MII) or RGMII port

xRX330:
GMAC0: RGMII port
GMAC1: GPHY2 (GMII)
GMAC2: GPHY0 (GMII)
GMAC3: GPHY3 (GMII)
GMAC3: GPHY3 (GMII) or GPHY0 (MII)
This can be changed in GSWIP_MII_CFG3 (0xc3)

GMAC4: GPHY1 (GMII)
GMAC5: GPHY1 (MII) or RGMII port

You also have to change gswip_mii_mask_cfg() it only supports port 0, 1 and 5, but this SoC can not change port 1 (always connected to internal GPHY, but it can change port 3 (change between GPHY0/MII/0x0 and PHY3/GMII/0x1)


Tested on D-Link DWR966 with OpenWRT.

Signed-off-by: Aleksander Jan Bajkowski <olek2@xxxxx>
---
  drivers/net/dsa/lantiq_gswip.c | 110 +++++++++++++++++++++++++++++++--
  1 file changed, 104 insertions(+), 6 deletions(-)

diff --git a/drivers/net/dsa/lantiq_gswip.c b/drivers/net/dsa/lantiq_gswip.c
index 09701c17f3f6..540cf99ad7fe 100644
--- a/drivers/net/dsa/lantiq_gswip.c
+++ b/drivers/net/dsa/lantiq_gswip.c
@@ -222,6 +222,7 @@
  struct gswip_hw_info {
  	int max_ports;
  	int cpu_port;
+	struct dsa_switch_ops *ops;
  };
struct xway_gphy_match_data {
@@ -1409,9 +1410,9 @@ static int gswip_port_fdb_dump(struct dsa_switch *ds, int port,
  	return 0;
  }
-static void gswip_phylink_validate(struct dsa_switch *ds, int port,
-				   unsigned long *supported,
-				   struct phylink_link_state *state)
+static void gswip_xrx200_phylink_validate(struct dsa_switch *ds, int port,
+					  unsigned long *supported,
+					  struct phylink_link_state *state)
  {
  	__ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };
@@ -1471,7 +1472,70 @@ static void gswip_phylink_validate(struct dsa_switch *ds, int port,
  	bitmap_zero(supported, __ETHTOOL_LINK_MODE_MASK_NBITS);
  	dev_err(ds->dev, "Unsupported interface '%s' for port %d\n",
  		phy_modes(state->interface), port);
+}
+
+static void gswip_xrx300_phylink_validate(struct dsa_switch *ds, int port,
+					  unsigned long *supported,
+					  struct phylink_link_state *state)
+{
+	__ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };
+
+	switch (port) {
+	case 0:
+		if (!phy_interface_mode_is_rgmii(state->interface) &&
+		    state->interface != PHY_INTERFACE_MODE_MII &

MII is not support on port 0

+		    state->interface != PHY_INTERFACE_MODE_REVMII &&

REVMII is not support on port 0

+		    state->interface != PHY_INTERFACE_MODE_RMII)

GMII is now supported with 0x9

+			goto unsupported;
+		break;
+	case 1:
+	case 2:
+	case 3:
+	case 4:
+		if (state->interface != PHY_INTERFACE_MODE_INTERNAL)
+			goto unsupported;
+		break;
+	case 5:
+		if (!phy_interface_mode_is_rgmii(state->interface) &&
+		    state->interface != PHY_INTERFACE_MODE_INTERNAL)
+			goto unsupported;
port 5 also supports RMIIM with bit 0x3 on xrx300 and xrx330

+		break;
+	default:
+		bitmap_zero(supported, __ETHTOOL_LINK_MODE_MASK_NBITS);
+		dev_err(ds->dev, "Unsupported port: %i\n", port);
+		return;
+	}
+
+	/* Allow all the expected bits */
+	phylink_set(mask, Autoneg);
+	phylink_set_port_modes(mask);
+	phylink_set(mask, Pause);
+	phylink_set(mask, Asym_Pause);
+
+	/* With the exclusion of MII and Reverse MII, we support Gigabit,
+	 * including Half duplex
+	 */
+	if (state->interface != PHY_INTERFACE_MODE_MII &&
+	    state->interface != PHY_INTERFACE_MODE_REVMII) {
+		phylink_set(mask, 1000baseT_Full);
+		phylink_set(mask, 1000baseT_Half);
+	}
+
+	phylink_set(mask, 10baseT_Half);
+	phylink_set(mask, 10baseT_Full);
+	phylink_set(mask, 100baseT_Half);
+	phylink_set(mask, 100baseT_Full);
+
+	bitmap_and(supported, supported, mask,
+		   __ETHTOOL_LINK_MODE_MASK_NBITS);
+	bitmap_and(state->advertising, state->advertising, mask,
+		   __ETHTOOL_LINK_MODE_MASK_NBITS);
You can put this block into a common function it is also used the the xrx200 validate block.

  	return;
+
+unsupported:
+	bitmap_zero(supported, __ETHTOOL_LINK_MODE_MASK_NBITS);
+	dev_err(ds->dev, "Unsupported interface '%s' for port %d\n",
+		phy_modes(state->interface), port);
  }
static void gswip_phylink_mac_config(struct dsa_switch *ds, int port,
@@ -1614,7 +1678,7 @@ static int gswip_get_sset_count(struct dsa_switch *ds, int port, int sset)
  	return ARRAY_SIZE(gswip_rmon_cnt);
  }
-static const struct dsa_switch_ops gswip_switch_ops = {
+static const struct dsa_switch_ops gswip_xrx200_switch_ops = {
  	.get_tag_protocol	= gswip_get_tag_protocol,
  	.setup			= gswip_setup,
  	.port_enable		= gswip_port_enable,
@@ -1630,7 +1694,32 @@ static const struct dsa_switch_ops gswip_switch_ops = {
  	.port_fdb_add		= gswip_port_fdb_add,
  	.port_fdb_del		= gswip_port_fdb_del,
  	.port_fdb_dump		= gswip_port_fdb_dump,
-	.phylink_validate	= gswip_phylink_validate,
+	.phylink_validate	= gswip_xrx200_phylink_validate,
+	.phylink_mac_config	= gswip_phylink_mac_config,
+	.phylink_mac_link_down	= gswip_phylink_mac_link_down,
+	.phylink_mac_link_up	= gswip_phylink_mac_link_up,
+	.get_strings		= gswip_get_strings,
+	.get_ethtool_stats	= gswip_get_ethtool_stats,
+	.get_sset_count		= gswip_get_sset_count,
+};
+
+static const struct dsa_switch_ops gswip_xrx300_switch_ops = {
+	.get_tag_protocol	= gswip_get_tag_protocol,
+	.setup			= gswip_setup,
+	.port_enable		= gswip_port_enable,
+	.port_disable		= gswip_port_disable,
+	.port_bridge_join	= gswip_port_bridge_join,
+	.port_bridge_leave	= gswip_port_bridge_leave,
+	.port_fast_age		= gswip_port_fast_age,
+	.port_vlan_filtering	= gswip_port_vlan_filtering,
+	.port_vlan_prepare	= gswip_port_vlan_prepare,
+	.port_vlan_add		= gswip_port_vlan_add,
+	.port_vlan_del		= gswip_port_vlan_del,
+	.port_stp_state_set	= gswip_port_stp_state_set,
+	.port_fdb_add		= gswip_port_fdb_add,
+	.port_fdb_del		= gswip_port_fdb_del,
+	.port_fdb_dump		= gswip_port_fdb_dump,
+	.phylink_validate	= gswip_xrx300_phylink_validate,
  	.phylink_mac_config	= gswip_phylink_mac_config,
  	.phylink_mac_link_down	= gswip_phylink_mac_link_down,
  	.phylink_mac_link_up	= gswip_phylink_mac_link_up,
@@ -1892,7 +1981,7 @@ static int gswip_probe(struct platform_device *pdev)
  	priv->ds->dev = dev;
  	priv->ds->num_ports = priv->hw_info->max_ports;
  	priv->ds->priv = priv;
-	priv->ds->ops = &gswip_switch_ops;
+	priv->ds->ops = priv->hw_info->ops;
  	priv->dev = dev;
  	version = gswip_switch_r(priv, GSWIP_VERSION);
@@ -1973,10 +2062,19 @@ static int gswip_remove(struct platform_device *pdev)
  static const struct gswip_hw_info gswip_xrx200 = {
  	.max_ports = 7,
  	.cpu_port = 6,
+	.ops = &gswip_xrx200_switch_ops,
+};
+
+static const struct gswip_hw_info gswip_xrx300 = {
+	.max_ports = 7,
+	.cpu_port = 6,
+	.ops = &gswip_xrx300_switch_ops,
  };
static const struct of_device_id gswip_of_match[] = {
  	{ .compatible = "lantiq,xrx200-gswip", .data = &gswip_xrx200 },
+	{ .compatible = "lantiq,xrx300-gswip", .data = &gswip_xrx300 },
+	{ .compatible = "lantiq,xrx330-gswip", .data = &gswip_xrx300 },
  	{},
  };
  MODULE_DEVICE_TABLE(of, gswip_of_match);



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