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Message-ID: <20200818150834.GC1551@shell.armlinux.org.uk>
Date: Tue, 18 Aug 2020 16:08:35 +0100
From: Russell King - ARM Linux admin <linux@...linux.org.uk>
To: Marek Behún <marek.behun@....cz>
Cc: Andrew Lunn <andrew@...n.ch>,
Maxime Chevallier <maxime.chevallier@...tlin.com>,
Baruch Siach <baruch@...s.co.il>,
Chris Healy <cphealy@...il.com>,
Florian Fainelli <f.fainelli@...il.com>, netdev@...r.kernel.org
Subject: Re: [PATCH RFC russell-king 0/4] Support for RollBall 10G copper SFP
modules
On Tue, Aug 18, 2020 at 03:43:05PM +0200, Marek Behún wrote:
> On Mon, 17 Aug 2020 14:49:09 +0100
> Russell King - ARM Linux admin <linux@...linux.org.uk> wrote:
> > @@ -710,6 +738,20 @@ static int mv3310_config_init(struct phy_device
> > *phydev) if (err)
> > return err;
> >
> > + if (mac_type != -1) {
> > + ret = phy_modify_mmd_changed(phydev, MDIO_MMD_VEND2,
> > + MV_V2_PORT_CTRL,
> > +
> > MV_V2_PORT_CTRL_MACTYPE, mac_type);
> > + if (ret > 0)
> > + ret = phy_modify_mmd(phydev, MDIO_MMD_VEND2,
> > + MV_V2_PORT_CTRL,
> > + MV_V2_PORT_CTRL_SWRST,
> > + MV_V2_PORT_CTRL_SWRST);
>
> When chaning mactype you also have to issue SWRST in the same register
> write. Otherwise it did not work for me.
That's interesting - because the documentation explicitly states that
this is a two-step process.
> Otherwise it looks nice. I will test this. On what branch does this
> apply?
My unpublished tip of the universe development. Here's a version on
the clearfog branch:
diff --git a/drivers/net/phy/marvell10g.c b/drivers/net/phy/marvell10g.c
index fe7e30c3faa8..dd282844637b 100644
--- a/drivers/net/phy/marvell10g.c
+++ b/drivers/net/phy/marvell10g.c
@@ -95,6 +95,7 @@ enum {
MV_V2_PORT_CTRL = 0xf001,
MV_V2_PORT_CTRL_SWRST = BIT(15),
MV_V2_PORT_CTRL_PWRDOWN = BIT(11),
+ MV_V2_PORT_CTRL_MACTYPE = 7 << 0,
/* Temperature control/read registers (88X3310 only) */
MV_V2_TEMP_CTRL = 0xf08a,
MV_V2_TEMP_CTRL_MASK = 0xc000,
@@ -597,17 +598,44 @@ static bool mv3310_has_pma_ngbaset_quirk(struct phy_device *phydev)
MV_PHY_ALASKA_NBT_QUIRK_MASK) == MV_PHY_ALASKA_NBT_QUIRK_REV;
}
+static int mv3310_select_mode(struct phy_device *phydev,
+ unsigned long *host_interfaces)
+{
+ int mac_type = -1;
+
+ if (test_bit(PHY_INTERFACE_MODE_USXGMII, host_interfaces))
+ mac_type = 7;
+ else if (test_bit(PHY_INTERFACE_MODE_SGMII, host_interfaces) &&
+ test_bit(PHY_INTERFACE_MODE_10GBASER, host_interfaces))
+ mac_type = 4;
+ else if (test_bit(PHY_INTERFACE_MODE_SGMII, host_interfaces) &&
+ test_bit(PHY_INTERFACE_MODE_RXAUI, host_interfaces))
+ mac_type = 0;
+ else if (test_bit(PHY_INTERFACE_MODE_10GBASER, host_interfaces))
+ mac_type = 6;
+ else if (test_bit(PHY_INTERFACE_MODE_RXAUI, host_interfaces))
+ mac_type = 2;
+ else if (test_bit(PHY_INTERFACE_MODE_SGMII, host_interfaces))
+ mac_type = 4;
+
+ return mac_type;
+}
+
static int mv3310_config_init(struct phy_device *phydev)
{
- int err;
+ int ret, err, mac_type = -1;
/* Check that the PHY interface type is compatible */
- if (phydev->interface != PHY_INTERFACE_MODE_SGMII &&
- phydev->interface != PHY_INTERFACE_MODE_2500BASEX &&
- phydev->interface != PHY_INTERFACE_MODE_XAUI &&
- phydev->interface != PHY_INTERFACE_MODE_RXAUI &&
- phydev->interface != PHY_INTERFACE_MODE_10GBASER)
+ if (!phy_interface_empty(phydev->host_interfaces)) {
+ mac_type = mv3310_select_mode(phydev, phydev->host_interfaces);
+ phydev_info(phydev, "mac_type=%d\n", mac_type);
+ } else if (phydev->interface != PHY_INTERFACE_MODE_SGMII &&
+ phydev->interface != PHY_INTERFACE_MODE_2500BASEX &&
+ phydev->interface != PHY_INTERFACE_MODE_XAUI &&
+ phydev->interface != PHY_INTERFACE_MODE_RXAUI &&
+ phydev->interface != PHY_INTERFACE_MODE_10GBASER) {
return -ENODEV;
+ }
phydev->mdix_ctrl = ETH_TP_MDI_AUTO;
@@ -616,6 +644,20 @@ static int mv3310_config_init(struct phy_device *phydev)
if (err)
return err;
+ if (mac_type != -1) {
+ ret = phy_modify_mmd_changed(phydev, MDIO_MMD_VEND2,
+ MV_V2_PORT_CTRL,
+ MV_V2_PORT_CTRL_MACTYPE, mac_type);
+ if (ret > 0)
+ ret = phy_modify_mmd(phydev, MDIO_MMD_VEND2,
+ MV_V2_PORT_CTRL,
+ MV_V2_PORT_CTRL_SWRST,
+ MV_V2_PORT_CTRL_SWRST);
+
+ if (ret < 0)
+ return ret;
+ }
+
/* Enable EDPD mode - saving 600mW */
err = mv3310_set_edpd(phydev, ETHTOOL_PHY_EDPD_DFLT_TX_MSECS);
if (err)
diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c
index ac44fceb84e6..ac9b1a4fe464 100644
--- a/drivers/net/phy/phylink.c
+++ b/drivers/net/phy/phylink.c
@@ -2016,6 +2016,8 @@ static void phylink_sfp_detach(void *upstream, struct sfp_bus *bus)
pl->netdev->sfp_bus = NULL;
}
+static DECLARE_PHY_INTERFACE_MASK(phylink_sfp_interfaces);
+
static const phy_interface_t phylink_sfp_interface_preference[] = {
PHY_INTERFACE_MODE_USXGMII,
PHY_INTERFACE_MODE_10GBASER,
@@ -2025,6 +2027,18 @@ static const phy_interface_t phylink_sfp_interface_preference[] = {
PHY_INTERFACE_MODE_1000BASEX,
};
+static int __init phylink_init(void)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(phylink_sfp_interface_preference); i++)
+ set_bit(phylink_sfp_interface_preference[i],
+ phylink_sfp_interfaces);
+
+ return 0;
+}
+module_init(phylink_init);
+
static phy_interface_t phylink_select_interface(struct phylink *pl,
const unsigned long *intf,
const char *intf_name)
@@ -2239,6 +2253,10 @@ static int phylink_sfp_connect_phy(void *upstream, struct phy_device *phy)
else
mode = MLO_AN_INBAND;
+ /* Set the PHY's host supported interfaces */
+ phy_interface_and(phy->host_interfaces, phylink_sfp_interfaces,
+ pl->config->supported_interfaces);
+
if (!phy_interface_empty(phy->supported_interfaces) &&
!phy_interface_empty(pl->config->supported_interfaces)) {
interface = phylink_select_interface(pl,
diff --git a/include/linux/phy.h b/include/linux/phy.h
index b7a51f09dad7..9ce4b6c5ebef 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -527,6 +527,7 @@ struct phy_device {
/* bitmap of supported interfaces */
DECLARE_PHY_INTERFACE_MASK(supported_interfaces);
+ DECLARE_PHY_INTERFACE_MASK(host_interfaces);
/* Energy efficient ethernet modes which should be prohibited */
u32 eee_broken_modes;
--
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!
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