| Message ID | 20240412180340.7965-4-fancer.lancer@gmail.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | net: stmmac: Fix MAC-capabilities procedure | expand |
On Fri, 12 Apr 2024, Serge Semin wrote: > Here is the list of the MAC capabilities specific to the particular DW MAC > IP-cores currently supported by the driver: > > DW MAC100: MAC_ASYM_PAUSE | MAC_SYM_PAUSE | > MAC_10 | MAC_100 > > DW GMAC: MAC_ASYM_PAUSE | MAC_SYM_PAUSE | > MAC_10 | MAC_100 | MAC_1000 > > Allwinner sun8i MAC: MAC_ASYM_PAUSE | MAC_SYM_PAUSE | > MAC_10 | MAC_100 | MAC_1000 > > DW QoS Eth: MAC_ASYM_PAUSE | MAC_SYM_PAUSE | > MAC_10 | MAC_100 | MAC_1000 | MAC_2500FD > if there is more than 1 active Tx/Rx queues: > MAC_ASYM_PAUSE | MAC_SYM_PAUSE | > MAC_10FD | MAC_100FD | MAC_1000FD | MAC_2500FD > > DW XGMAC: MAC_ASYM_PAUSE | MAC_SYM_PAUSE | > MAC_1000FD | MAC_2500FD | MAC_5000FD | MAC_10000FD > > DW XLGMAC: MAC_ASYM_PAUSE | MAC_SYM_PAUSE | > MAC_1000FD | MAC_2500FD | MAC_5000FD | MAC_10000FD | > MAC_25000FD | MAC_40000FD | MAC_50000FD | MAC_100000FD > > As you can see there are only two common capabilities: > MAC_ASYM_PAUSE | MAC_SYM_PAUSE. > Meanwhile what is currently implemented defines 10/100/1000 link speeds > for all IP-cores, which is definitely incorrect for DW MAC100, DW XGMAC > and DW XLGMAC devices. > > Seeing the flow-control is implemented as a callback for each MAC IP-core > (see dwmac100_flow_ctrl(), dwmac1000_flow_ctrl(), sun8i_dwmac_flow_ctrl(), > etc) and since the MAC-specific setup() method is supposed to be called > for each available DW MAC-based device, the capabilities initialization > can be freely moved to these setup() functions, thus correctly setting up > the MAC-capabilities for each IP-core (including the Allwinner Sun8i). A > new stmmac_link::caps field was specifically introduced for that so to > have all link-specific info preserved in a single structure. > > Note the suggested change fixes three earlier commits at a time. The > commit 5b0d7d7da64b ("net: stmmac: Add the missing speeds that XGMAC > supports") permitted the 10-100 link speeds and 1G half-duplex mode for DW > XGMAC IP-core even though it doesn't support them. The commit df7699c70c1b > ("net: stmmac: Do not cut down 1G modes") incorrectly added the MAC1000 > capability to the DW MAC100 IP-core. Similarly to the DW XGMAC the commit > 8a880936e902 ("net: stmmac: Add XLGMII support") incorrectly permitted the > 10-100 link speeds and 1G half-duplex mode for DW XLGMAC IP-core. > > Fixes: 5b0d7d7da64b ("net: stmmac: Add the missing speeds that XGMAC supports") > Fixes: df7699c70c1b ("net: stmmac: Do not cut down 1G modes") > Fixes: 8a880936e902 ("net: stmmac: Add XLGMII support") > Suggested-by: Russell King (Oracle) <linux@armlinux.org.uk> > Signed-off-by: Serge Semin <fancer.lancer@gmail.com> > --- > drivers/net/ethernet/stmicro/stmmac/common.h | 1 + > .../net/ethernet/stmicro/stmmac/dwmac-sun8i.c | 2 ++ > .../ethernet/stmicro/stmmac/dwmac1000_core.c | 2 ++ > .../ethernet/stmicro/stmmac/dwmac100_core.c | 2 ++ > .../net/ethernet/stmicro/stmmac/dwmac4_core.c | 10 ++++------ > .../ethernet/stmicro/stmmac/dwxgmac2_core.c | 18 ++++++++---------- > .../net/ethernet/stmicro/stmmac/stmmac_main.c | 7 ++++--- > 7 files changed, 23 insertions(+), 19 deletions(-) > > diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h > index a6fefe675ef1..3b7d4ac1e7be 100644 > --- a/drivers/net/ethernet/stmicro/stmmac/common.h > +++ b/drivers/net/ethernet/stmicro/stmmac/common.h > @@ -553,6 +553,7 @@ extern const struct stmmac_hwtimestamp stmmac_ptp; > extern const struct stmmac_mode_ops dwmac4_ring_mode_ops; > > struct mac_link { > + u32 caps; > u32 speed_mask; > u32 speed10; > u32 speed100; > diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c > index b21d99faa2d0..e1b761dcfa1d 100644 > --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c > +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c > @@ -1096,6 +1096,8 @@ static struct mac_device_info *sun8i_dwmac_setup(void *ppriv) > > priv->dev->priv_flags |= IFF_UNICAST_FLT; > > + mac->link.caps = MAC_ASYM_PAUSE | MAC_SYM_PAUSE | > + MAC_10 | MAC_100 | MAC_1000; > /* The loopback bit seems to be re-set when link change > * Simply mask it each time > * Speed 10/100/1000 are set in BIT(2)/BIT(3) > diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c > index 3927609abc44..8555299443f4 100644 > --- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c > +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c > @@ -539,6 +539,8 @@ int dwmac1000_setup(struct stmmac_priv *priv) > if (mac->multicast_filter_bins) > mac->mcast_bits_log2 = ilog2(mac->multicast_filter_bins); > > + mac->link.caps = MAC_ASYM_PAUSE | MAC_SYM_PAUSE | > + MAC_10 | MAC_100 | MAC_1000; > mac->link.duplex = GMAC_CONTROL_DM; > mac->link.speed10 = GMAC_CONTROL_PS; > mac->link.speed100 = GMAC_CONTROL_PS | GMAC_CONTROL_FES; > diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac100_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac100_core.c > index a6e8d7bd9588..7667d103cd0e 100644 > --- a/drivers/net/ethernet/stmicro/stmmac/dwmac100_core.c > +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac100_core.c > @@ -175,6 +175,8 @@ int dwmac100_setup(struct stmmac_priv *priv) > dev_info(priv->device, "\tDWMAC100\n"); > > mac->pcsr = priv->ioaddr; > + mac->link.caps = MAC_ASYM_PAUSE | MAC_SYM_PAUSE | > + MAC_10 | MAC_100; > mac->link.duplex = MAC_CONTROL_F; > mac->link.speed10 = 0; > mac->link.speed100 = 0; > diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c > index ec6a13e644b3..a38226d7cc6a 100644 > --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c > +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c > @@ -70,14 +70,10 @@ static void dwmac4_core_init(struct mac_device_info *hw, > > static void dwmac4_phylink_get_caps(struct stmmac_priv *priv) > { > - priv->phylink_config.mac_capabilities |= MAC_2500FD; > - > if (priv->plat->tx_queues_to_use > 1) > - priv->phylink_config.mac_capabilities &= > - ~(MAC_10HD | MAC_100HD | MAC_1000HD); > + priv->hw->link.caps &= ~(MAC_10HD | MAC_100HD | MAC_1000HD); > else > - priv->phylink_config.mac_capabilities |= > - (MAC_10HD | MAC_100HD | MAC_1000HD); > + priv->hw->link.caps |= (MAC_10HD | MAC_100HD | MAC_1000HD); > } > > static void dwmac4_rx_queue_enable(struct mac_device_info *hw, > @@ -1385,6 +1381,8 @@ int dwmac4_setup(struct stmmac_priv *priv) > if (mac->multicast_filter_bins) > mac->mcast_bits_log2 = ilog2(mac->multicast_filter_bins); > > + mac->link.caps = MAC_ASYM_PAUSE | MAC_SYM_PAUSE | > + MAC_10 | MAC_100 | MAC_1000 | MAC_2500FD; > mac->link.duplex = GMAC_CONFIG_DM; > mac->link.speed10 = GMAC_CONFIG_PS; > mac->link.speed100 = GMAC_CONFIG_FES | GMAC_CONFIG_PS; > diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c > index e841e312077e..f8e7775bb633 100644 > --- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c > +++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c > @@ -47,14 +47,6 @@ static void dwxgmac2_core_init(struct mac_device_info *hw, > writel(XGMAC_INT_DEFAULT_EN, ioaddr + XGMAC_INT_EN); > } > > -static void xgmac_phylink_get_caps(struct stmmac_priv *priv) > -{ > - priv->phylink_config.mac_capabilities |= MAC_2500FD | MAC_5000FD | > - MAC_10000FD | MAC_25000FD | > - MAC_40000FD | MAC_50000FD | > - MAC_100000FD; > -} > - > static void dwxgmac2_set_mac(void __iomem *ioaddr, bool enable) > { > u32 tx = readl(ioaddr + XGMAC_TX_CONFIG); > @@ -1540,7 +1532,6 @@ static void dwxgmac3_fpe_configure(void __iomem *ioaddr, struct stmmac_fpe_cfg * > > const struct stmmac_ops dwxgmac210_ops = { > .core_init = dwxgmac2_core_init, > - .phylink_get_caps = xgmac_phylink_get_caps, > .set_mac = dwxgmac2_set_mac, > .rx_ipc = dwxgmac2_rx_ipc, > .rx_queue_enable = dwxgmac2_rx_queue_enable, > @@ -1601,7 +1592,6 @@ static void dwxlgmac2_rx_queue_enable(struct mac_device_info *hw, u8 mode, > > const struct stmmac_ops dwxlgmac2_ops = { > .core_init = dwxgmac2_core_init, > - .phylink_get_caps = xgmac_phylink_get_caps, > .set_mac = dwxgmac2_set_mac, > .rx_ipc = dwxgmac2_rx_ipc, > .rx_queue_enable = dwxlgmac2_rx_queue_enable, > @@ -1661,6 +1651,9 @@ int dwxgmac2_setup(struct stmmac_priv *priv) > if (mac->multicast_filter_bins) > mac->mcast_bits_log2 = ilog2(mac->multicast_filter_bins); > > + mac->link.caps = MAC_ASYM_PAUSE | MAC_SYM_PAUSE | > + MAC_1000FD | MAC_2500FD | MAC_5000FD | > + MAC_10000FD; > mac->link.duplex = 0; > mac->link.speed10 = XGMAC_CONFIG_SS_10_MII; > mac->link.speed100 = XGMAC_CONFIG_SS_100_MII; > @@ -1698,6 +1691,11 @@ int dwxlgmac2_setup(struct stmmac_priv *priv) > if (mac->multicast_filter_bins) > mac->mcast_bits_log2 = ilog2(mac->multicast_filter_bins); > > + mac->link.caps = MAC_ASYM_PAUSE | MAC_SYM_PAUSE | > + MAC_1000FD | MAC_2500FD | MAC_5000FD | > + MAC_10000FD | MAC_25000FD | > + MAC_40000FD | MAC_50000FD | > + MAC_100000FD; > mac->link.duplex = 0; > mac->link.speed1000 = XLGMAC_CONFIG_SS_1000; > mac->link.speed2500 = XLGMAC_CONFIG_SS_2500; > diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c > index b8a1f02398ee..7c6fb14b5555 100644 > --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c > +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c > @@ -1225,12 +1225,11 @@ static int stmmac_phy_setup(struct stmmac_priv *priv) > xpcs_get_interfaces(priv->hw->xpcs, > priv->phylink_config.supported_interfaces); > > - priv->phylink_config.mac_capabilities = MAC_ASYM_PAUSE | MAC_SYM_PAUSE | > - MAC_10 | MAC_100 | MAC_1000; > - > /* Get the MAC specific capabilities */ > stmmac_mac_phylink_get_caps(priv); > > + priv->phylink_config.mac_capabilities = priv->hw->link.caps; > + > max_speed = priv->plat->max_speed; > if (max_speed) > phylink_limit_mac_speed(&priv->phylink_config, max_speed); > @@ -7344,6 +7343,8 @@ int stmmac_reinit_queues(struct net_device *dev, u32 rx_cnt, u32 tx_cnt) > > stmmac_mac_phylink_get_caps(priv); > > + priv->phylink_config.mac_capabilities = priv->hw->link.caps; > + > max_speed = priv->plat->max_speed; > if (max_speed) > phylink_limit_mac_speed(&priv->phylink_config, max_speed); > -- > 2.43.0 > > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel > Reviewed-by: Romain Gantois <romain.gantois@bootlin.com> Thanks,
diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h index a6fefe675ef1..3b7d4ac1e7be 100644 --- a/drivers/net/ethernet/stmicro/stmmac/common.h +++ b/drivers/net/ethernet/stmicro/stmmac/common.h @@ -553,6 +553,7 @@ extern const struct stmmac_hwtimestamp stmmac_ptp; extern const struct stmmac_mode_ops dwmac4_ring_mode_ops; struct mac_link { + u32 caps; u32 speed_mask; u32 speed10; u32 speed100; diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c index b21d99faa2d0..e1b761dcfa1d 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c @@ -1096,6 +1096,8 @@ static struct mac_device_info *sun8i_dwmac_setup(void *ppriv) priv->dev->priv_flags |= IFF_UNICAST_FLT; + mac->link.caps = MAC_ASYM_PAUSE | MAC_SYM_PAUSE | + MAC_10 | MAC_100 | MAC_1000; /* The loopback bit seems to be re-set when link change * Simply mask it each time * Speed 10/100/1000 are set in BIT(2)/BIT(3) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c index 3927609abc44..8555299443f4 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c @@ -539,6 +539,8 @@ int dwmac1000_setup(struct stmmac_priv *priv) if (mac->multicast_filter_bins) mac->mcast_bits_log2 = ilog2(mac->multicast_filter_bins); + mac->link.caps = MAC_ASYM_PAUSE | MAC_SYM_PAUSE | + MAC_10 | MAC_100 | MAC_1000; mac->link.duplex = GMAC_CONTROL_DM; mac->link.speed10 = GMAC_CONTROL_PS; mac->link.speed100 = GMAC_CONTROL_PS | GMAC_CONTROL_FES; diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac100_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac100_core.c index a6e8d7bd9588..7667d103cd0e 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac100_core.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac100_core.c @@ -175,6 +175,8 @@ int dwmac100_setup(struct stmmac_priv *priv) dev_info(priv->device, "\tDWMAC100\n"); mac->pcsr = priv->ioaddr; + mac->link.caps = MAC_ASYM_PAUSE | MAC_SYM_PAUSE | + MAC_10 | MAC_100; mac->link.duplex = MAC_CONTROL_F; mac->link.speed10 = 0; mac->link.speed100 = 0; diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c index ec6a13e644b3..a38226d7cc6a 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c @@ -70,14 +70,10 @@ static void dwmac4_core_init(struct mac_device_info *hw, static void dwmac4_phylink_get_caps(struct stmmac_priv *priv) { - priv->phylink_config.mac_capabilities |= MAC_2500FD; - if (priv->plat->tx_queues_to_use > 1) - priv->phylink_config.mac_capabilities &= - ~(MAC_10HD | MAC_100HD | MAC_1000HD); + priv->hw->link.caps &= ~(MAC_10HD | MAC_100HD | MAC_1000HD); else - priv->phylink_config.mac_capabilities |= - (MAC_10HD | MAC_100HD | MAC_1000HD); + priv->hw->link.caps |= (MAC_10HD | MAC_100HD | MAC_1000HD); } static void dwmac4_rx_queue_enable(struct mac_device_info *hw, @@ -1385,6 +1381,8 @@ int dwmac4_setup(struct stmmac_priv *priv) if (mac->multicast_filter_bins) mac->mcast_bits_log2 = ilog2(mac->multicast_filter_bins); + mac->link.caps = MAC_ASYM_PAUSE | MAC_SYM_PAUSE | + MAC_10 | MAC_100 | MAC_1000 | MAC_2500FD; mac->link.duplex = GMAC_CONFIG_DM; mac->link.speed10 = GMAC_CONFIG_PS; mac->link.speed100 = GMAC_CONFIG_FES | GMAC_CONFIG_PS; diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c index e841e312077e..f8e7775bb633 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c @@ -47,14 +47,6 @@ static void dwxgmac2_core_init(struct mac_device_info *hw, writel(XGMAC_INT_DEFAULT_EN, ioaddr + XGMAC_INT_EN); } -static void xgmac_phylink_get_caps(struct stmmac_priv *priv) -{ - priv->phylink_config.mac_capabilities |= MAC_2500FD | MAC_5000FD | - MAC_10000FD | MAC_25000FD | - MAC_40000FD | MAC_50000FD | - MAC_100000FD; -} - static void dwxgmac2_set_mac(void __iomem *ioaddr, bool enable) { u32 tx = readl(ioaddr + XGMAC_TX_CONFIG); @@ -1540,7 +1532,6 @@ static void dwxgmac3_fpe_configure(void __iomem *ioaddr, struct stmmac_fpe_cfg * const struct stmmac_ops dwxgmac210_ops = { .core_init = dwxgmac2_core_init, - .phylink_get_caps = xgmac_phylink_get_caps, .set_mac = dwxgmac2_set_mac, .rx_ipc = dwxgmac2_rx_ipc, .rx_queue_enable = dwxgmac2_rx_queue_enable, @@ -1601,7 +1592,6 @@ static void dwxlgmac2_rx_queue_enable(struct mac_device_info *hw, u8 mode, const struct stmmac_ops dwxlgmac2_ops = { .core_init = dwxgmac2_core_init, - .phylink_get_caps = xgmac_phylink_get_caps, .set_mac = dwxgmac2_set_mac, .rx_ipc = dwxgmac2_rx_ipc, .rx_queue_enable = dwxlgmac2_rx_queue_enable, @@ -1661,6 +1651,9 @@ int dwxgmac2_setup(struct stmmac_priv *priv) if (mac->multicast_filter_bins) mac->mcast_bits_log2 = ilog2(mac->multicast_filter_bins); + mac->link.caps = MAC_ASYM_PAUSE | MAC_SYM_PAUSE | + MAC_1000FD | MAC_2500FD | MAC_5000FD | + MAC_10000FD; mac->link.duplex = 0; mac->link.speed10 = XGMAC_CONFIG_SS_10_MII; mac->link.speed100 = XGMAC_CONFIG_SS_100_MII; @@ -1698,6 +1691,11 @@ int dwxlgmac2_setup(struct stmmac_priv *priv) if (mac->multicast_filter_bins) mac->mcast_bits_log2 = ilog2(mac->multicast_filter_bins); + mac->link.caps = MAC_ASYM_PAUSE | MAC_SYM_PAUSE | + MAC_1000FD | MAC_2500FD | MAC_5000FD | + MAC_10000FD | MAC_25000FD | + MAC_40000FD | MAC_50000FD | + MAC_100000FD; mac->link.duplex = 0; mac->link.speed1000 = XLGMAC_CONFIG_SS_1000; mac->link.speed2500 = XLGMAC_CONFIG_SS_2500; diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index b8a1f02398ee..7c6fb14b5555 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -1225,12 +1225,11 @@ static int stmmac_phy_setup(struct stmmac_priv *priv) xpcs_get_interfaces(priv->hw->xpcs, priv->phylink_config.supported_interfaces); - priv->phylink_config.mac_capabilities = MAC_ASYM_PAUSE | MAC_SYM_PAUSE | - MAC_10 | MAC_100 | MAC_1000; - /* Get the MAC specific capabilities */ stmmac_mac_phylink_get_caps(priv); + priv->phylink_config.mac_capabilities = priv->hw->link.caps; + max_speed = priv->plat->max_speed; if (max_speed) phylink_limit_mac_speed(&priv->phylink_config, max_speed); @@ -7344,6 +7343,8 @@ int stmmac_reinit_queues(struct net_device *dev, u32 rx_cnt, u32 tx_cnt) stmmac_mac_phylink_get_caps(priv); + priv->phylink_config.mac_capabilities = priv->hw->link.caps; + max_speed = priv->plat->max_speed; if (max_speed) phylink_limit_mac_speed(&priv->phylink_config, max_speed);
Here is the list of the MAC capabilities specific to the particular DW MAC IP-cores currently supported by the driver: DW MAC100: MAC_ASYM_PAUSE | MAC_SYM_PAUSE | MAC_10 | MAC_100 DW GMAC: MAC_ASYM_PAUSE | MAC_SYM_PAUSE | MAC_10 | MAC_100 | MAC_1000 Allwinner sun8i MAC: MAC_ASYM_PAUSE | MAC_SYM_PAUSE | MAC_10 | MAC_100 | MAC_1000 DW QoS Eth: MAC_ASYM_PAUSE | MAC_SYM_PAUSE | MAC_10 | MAC_100 | MAC_1000 | MAC_2500FD if there is more than 1 active Tx/Rx queues: MAC_ASYM_PAUSE | MAC_SYM_PAUSE | MAC_10FD | MAC_100FD | MAC_1000FD | MAC_2500FD DW XGMAC: MAC_ASYM_PAUSE | MAC_SYM_PAUSE | MAC_1000FD | MAC_2500FD | MAC_5000FD | MAC_10000FD DW XLGMAC: MAC_ASYM_PAUSE | MAC_SYM_PAUSE | MAC_1000FD | MAC_2500FD | MAC_5000FD | MAC_10000FD | MAC_25000FD | MAC_40000FD | MAC_50000FD | MAC_100000FD As you can see there are only two common capabilities: MAC_ASYM_PAUSE | MAC_SYM_PAUSE. Meanwhile what is currently implemented defines 10/100/1000 link speeds for all IP-cores, which is definitely incorrect for DW MAC100, DW XGMAC and DW XLGMAC devices. Seeing the flow-control is implemented as a callback for each MAC IP-core (see dwmac100_flow_ctrl(), dwmac1000_flow_ctrl(), sun8i_dwmac_flow_ctrl(), etc) and since the MAC-specific setup() method is supposed to be called for each available DW MAC-based device, the capabilities initialization can be freely moved to these setup() functions, thus correctly setting up the MAC-capabilities for each IP-core (including the Allwinner Sun8i). A new stmmac_link::caps field was specifically introduced for that so to have all link-specific info preserved in a single structure. Note the suggested change fixes three earlier commits at a time. The commit 5b0d7d7da64b ("net: stmmac: Add the missing speeds that XGMAC supports") permitted the 10-100 link speeds and 1G half-duplex mode for DW XGMAC IP-core even though it doesn't support them. The commit df7699c70c1b ("net: stmmac: Do not cut down 1G modes") incorrectly added the MAC1000 capability to the DW MAC100 IP-core. Similarly to the DW XGMAC the commit 8a880936e902 ("net: stmmac: Add XLGMII support") incorrectly permitted the 10-100 link speeds and 1G half-duplex mode for DW XLGMAC IP-core. Fixes: 5b0d7d7da64b ("net: stmmac: Add the missing speeds that XGMAC supports") Fixes: df7699c70c1b ("net: stmmac: Do not cut down 1G modes") Fixes: 8a880936e902 ("net: stmmac: Add XLGMII support") Suggested-by: Russell King (Oracle) <linux@armlinux.org.uk> Signed-off-by: Serge Semin <fancer.lancer@gmail.com> --- drivers/net/ethernet/stmicro/stmmac/common.h | 1 + .../net/ethernet/stmicro/stmmac/dwmac-sun8i.c | 2 ++ .../ethernet/stmicro/stmmac/dwmac1000_core.c | 2 ++ .../ethernet/stmicro/stmmac/dwmac100_core.c | 2 ++ .../net/ethernet/stmicro/stmmac/dwmac4_core.c | 10 ++++------ .../ethernet/stmicro/stmmac/dwxgmac2_core.c | 18 ++++++++---------- .../net/ethernet/stmicro/stmmac/stmmac_main.c | 7 ++++--- 7 files changed, 23 insertions(+), 19 deletions(-)