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Commit c5e62a24 authored by David S. Miller's avatar David S. Miller
Browse files

Merge branch 'sfc-support-25G-configuration-with-ethtool'



Edward Cree says:

====================
sfc: support 25G configuration with ethtool

Adds support for advertise bits beyond the 32-bit legacy masks, and plumbs in
 translation of the new 25/50/100G bits to/from MCDI.
====================

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parents c92342b0 5abb5e7f
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+27 −16
Original line number Diff line number Diff line
@@ -953,31 +953,42 @@ void efx_link_status_changed(struct efx_nic *efx)
		netif_info(efx, link, efx->net_dev, "link down\n");
}

void efx_link_set_advertising(struct efx_nic *efx, u32 advertising)
void efx_link_set_advertising(struct efx_nic *efx,
			      const unsigned long *advertising)
{
	efx->link_advertising = advertising;
	if (advertising) {
		if (advertising & ADVERTISED_Pause)
	memcpy(efx->link_advertising, advertising,
	       sizeof(__ETHTOOL_DECLARE_LINK_MODE_MASK()));

	efx->link_advertising[0] |= ADVERTISED_Autoneg;
	if (advertising[0] & ADVERTISED_Pause)
		efx->wanted_fc |= (EFX_FC_TX | EFX_FC_RX);
	else
		efx->wanted_fc &= ~(EFX_FC_TX | EFX_FC_RX);
		if (advertising & ADVERTISED_Asym_Pause)
	if (advertising[0] & ADVERTISED_Asym_Pause)
		efx->wanted_fc ^= EFX_FC_TX;
}

/* Equivalent to efx_link_set_advertising with all-zeroes, except does not
 * force the Autoneg bit on.
 */
void efx_link_clear_advertising(struct efx_nic *efx)
{
	bitmap_zero(efx->link_advertising, __ETHTOOL_LINK_MODE_MASK_NBITS);
	efx->wanted_fc &= ~(EFX_FC_TX | EFX_FC_RX);
}

void efx_link_set_wanted_fc(struct efx_nic *efx, u8 wanted_fc)
{
	efx->wanted_fc = wanted_fc;
	if (efx->link_advertising) {
	if (efx->link_advertising[0]) {
		if (wanted_fc & EFX_FC_RX)
			efx->link_advertising |= (ADVERTISED_Pause |
			efx->link_advertising[0] |= (ADVERTISED_Pause |
						     ADVERTISED_Asym_Pause);
		else
			efx->link_advertising &= ~(ADVERTISED_Pause |
			efx->link_advertising[0] &= ~(ADVERTISED_Pause |
						      ADVERTISED_Asym_Pause);
		if (wanted_fc & EFX_FC_TX)
			efx->link_advertising ^= ADVERTISED_Asym_Pause;
			efx->link_advertising[0] ^= ADVERTISED_Asym_Pause;
	}
}

+3 −1
Original line number Diff line number Diff line
@@ -258,7 +258,9 @@ static inline void efx_schedule_channel_irq(struct efx_channel *channel)
}

void efx_link_status_changed(struct efx_nic *efx);
void efx_link_set_advertising(struct efx_nic *efx, u32);
void efx_link_set_advertising(struct efx_nic *efx,
			      const unsigned long *advertising);
void efx_link_clear_advertising(struct efx_nic *efx);
void efx_link_set_wanted_fc(struct efx_nic *efx, u8);

static inline void efx_device_detach_sync(struct efx_nic *efx)
+3 −3
Original line number Diff line number Diff line
@@ -720,7 +720,7 @@ static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
		goto out;
	}

	if ((wanted_fc & EFX_FC_AUTO) && !efx->link_advertising) {
	if ((wanted_fc & EFX_FC_AUTO) && !efx->link_advertising[0]) {
		netif_dbg(efx, drv, efx->net_dev,
			  "Autonegotiation is disabled\n");
		rc = -EINVAL;
@@ -732,10 +732,10 @@ static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
	    (wanted_fc & EFX_FC_TX) && !(efx->wanted_fc & EFX_FC_TX))
		efx->type->prepare_enable_fc_tx(efx);

	old_adv = efx->link_advertising;
	old_adv = efx->link_advertising[0];
	old_fc = efx->wanted_fc;
	efx_link_set_wanted_fc(efx, wanted_fc);
	if (efx->link_advertising != old_adv ||
	if (efx->link_advertising[0] != old_adv ||
	    (efx->wanted_fc ^ old_fc) & EFX_FC_AUTO) {
		rc = efx->phy_op->reconfigure(efx);
		if (rc) {
+86 −72
Original line number Diff line number Diff line
@@ -171,89 +171,108 @@ static int efx_mcdi_mdio_write(struct net_device *net_dev,
	return 0;
}

static u32 mcdi_to_ethtool_cap(u32 media, u32 cap)
static void mcdi_to_ethtool_linkset(u32 media, u32 cap, unsigned long *linkset)
{
	u32 result = 0;
	#define SET_BIT(name)	__set_bit(ETHTOOL_LINK_MODE_ ## name ## _BIT, \
					  linkset)

	bitmap_zero(linkset, __ETHTOOL_LINK_MODE_MASK_NBITS);
	switch (media) {
	case MC_CMD_MEDIA_KX4:
		result |= SUPPORTED_Backplane;
		SET_BIT(Backplane);
		if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN))
			result |= SUPPORTED_1000baseKX_Full;
			SET_BIT(1000baseKX_Full);
		if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN))
			result |= SUPPORTED_10000baseKX4_Full;
			SET_BIT(10000baseKX4_Full);
		if (cap & (1 << MC_CMD_PHY_CAP_40000FDX_LBN))
			result |= SUPPORTED_40000baseKR4_Full;
			SET_BIT(40000baseKR4_Full);
		break;

	case MC_CMD_MEDIA_XFP:
	case MC_CMD_MEDIA_SFP_PLUS:
	case MC_CMD_MEDIA_QSFP_PLUS:
		result |= SUPPORTED_FIBRE;
		SET_BIT(FIBRE);
		if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN))
			result |= SUPPORTED_1000baseT_Full;
			SET_BIT(1000baseT_Full);
		if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN))
			result |= SUPPORTED_10000baseT_Full;
			SET_BIT(10000baseT_Full);
		if (cap & (1 << MC_CMD_PHY_CAP_40000FDX_LBN))
			result |= SUPPORTED_40000baseCR4_Full;
			SET_BIT(40000baseCR4_Full);
		if (cap & (1 << MC_CMD_PHY_CAP_100000FDX_LBN))
			SET_BIT(100000baseCR4_Full);
		if (cap & (1 << MC_CMD_PHY_CAP_25000FDX_LBN))
			SET_BIT(25000baseCR_Full);
		if (cap & (1 << MC_CMD_PHY_CAP_50000FDX_LBN))
			SET_BIT(50000baseCR2_Full);
		break;

	case MC_CMD_MEDIA_BASE_T:
		result |= SUPPORTED_TP;
		SET_BIT(TP);
		if (cap & (1 << MC_CMD_PHY_CAP_10HDX_LBN))
			result |= SUPPORTED_10baseT_Half;
			SET_BIT(10baseT_Half);
		if (cap & (1 << MC_CMD_PHY_CAP_10FDX_LBN))
			result |= SUPPORTED_10baseT_Full;
			SET_BIT(10baseT_Full);
		if (cap & (1 << MC_CMD_PHY_CAP_100HDX_LBN))
			result |= SUPPORTED_100baseT_Half;
			SET_BIT(100baseT_Half);
		if (cap & (1 << MC_CMD_PHY_CAP_100FDX_LBN))
			result |= SUPPORTED_100baseT_Full;
			SET_BIT(100baseT_Full);
		if (cap & (1 << MC_CMD_PHY_CAP_1000HDX_LBN))
			result |= SUPPORTED_1000baseT_Half;
			SET_BIT(1000baseT_Half);
		if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN))
			result |= SUPPORTED_1000baseT_Full;
			SET_BIT(1000baseT_Full);
		if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN))
			result |= SUPPORTED_10000baseT_Full;
			SET_BIT(10000baseT_Full);
		break;
	}

	if (cap & (1 << MC_CMD_PHY_CAP_PAUSE_LBN))
		result |= SUPPORTED_Pause;
		SET_BIT(Pause);
	if (cap & (1 << MC_CMD_PHY_CAP_ASYM_LBN))
		result |= SUPPORTED_Asym_Pause;
		SET_BIT(Asym_Pause);
	if (cap & (1 << MC_CMD_PHY_CAP_AN_LBN))
		result |= SUPPORTED_Autoneg;
		SET_BIT(Autoneg);

	return result;
	#undef SET_BIT
}

static u32 ethtool_to_mcdi_cap(u32 cap)
static u32 ethtool_linkset_to_mcdi_cap(const unsigned long *linkset)
{
	u32 result = 0;

	if (cap & SUPPORTED_10baseT_Half)
	#define TEST_BIT(name)	test_bit(ETHTOOL_LINK_MODE_ ## name ## _BIT, \
					 linkset)

	if (TEST_BIT(10baseT_Half))
		result |= (1 << MC_CMD_PHY_CAP_10HDX_LBN);
	if (cap & SUPPORTED_10baseT_Full)
	if (TEST_BIT(10baseT_Full))
		result |= (1 << MC_CMD_PHY_CAP_10FDX_LBN);
	if (cap & SUPPORTED_100baseT_Half)
	if (TEST_BIT(100baseT_Half))
		result |= (1 << MC_CMD_PHY_CAP_100HDX_LBN);
	if (cap & SUPPORTED_100baseT_Full)
	if (TEST_BIT(100baseT_Full))
		result |= (1 << MC_CMD_PHY_CAP_100FDX_LBN);
	if (cap & SUPPORTED_1000baseT_Half)
	if (TEST_BIT(1000baseT_Half))
		result |= (1 << MC_CMD_PHY_CAP_1000HDX_LBN);
	if (cap & (SUPPORTED_1000baseT_Full | SUPPORTED_1000baseKX_Full))
	if (TEST_BIT(1000baseT_Full) || TEST_BIT(1000baseKX_Full))
		result |= (1 << MC_CMD_PHY_CAP_1000FDX_LBN);
	if (cap & (SUPPORTED_10000baseT_Full | SUPPORTED_10000baseKX4_Full))
	if (TEST_BIT(10000baseT_Full) || TEST_BIT(10000baseKX4_Full))
		result |= (1 << MC_CMD_PHY_CAP_10000FDX_LBN);
	if (cap & (SUPPORTED_40000baseCR4_Full | SUPPORTED_40000baseKR4_Full))
	if (TEST_BIT(40000baseCR4_Full) || TEST_BIT(40000baseKR4_Full))
		result |= (1 << MC_CMD_PHY_CAP_40000FDX_LBN);
	if (cap & SUPPORTED_Pause)
	if (TEST_BIT(100000baseCR4_Full))
		result |= (1 << MC_CMD_PHY_CAP_100000FDX_LBN);
	if (TEST_BIT(25000baseCR_Full))
		result |= (1 << MC_CMD_PHY_CAP_25000FDX_LBN);
	if (TEST_BIT(50000baseCR2_Full))
		result |= (1 << MC_CMD_PHY_CAP_50000FDX_LBN);
	if (TEST_BIT(Pause))
		result |= (1 << MC_CMD_PHY_CAP_PAUSE_LBN);
	if (cap & SUPPORTED_Asym_Pause)
	if (TEST_BIT(Asym_Pause))
		result |= (1 << MC_CMD_PHY_CAP_ASYM_LBN);
	if (cap & SUPPORTED_Autoneg)
	if (TEST_BIT(Autoneg))
		result |= (1 << MC_CMD_PHY_CAP_AN_LBN);

	#undef TEST_BIT

	return result;
}

@@ -285,7 +304,7 @@ static u32 efx_get_mcdi_phy_flags(struct efx_nic *efx)
	return flags;
}

static u32 mcdi_to_ethtool_media(u32 media)
static u8 mcdi_to_ethtool_media(u32 media)
{
	switch (media) {
	case MC_CMD_MEDIA_XAUI:
@@ -371,8 +390,8 @@ static int efx_mcdi_phy_probe(struct efx_nic *efx)

	caps = MCDI_DWORD(outbuf, GET_LINK_OUT_CAP);
	if (caps & (1 << MC_CMD_PHY_CAP_AN_LBN))
		efx->link_advertising =
			mcdi_to_ethtool_cap(phy_data->media, caps);
		mcdi_to_ethtool_linkset(phy_data->media, caps,
					efx->link_advertising);
	else
		phy_data->forced_cap = caps;

@@ -435,8 +454,8 @@ static int efx_mcdi_phy_probe(struct efx_nic *efx)
int efx_mcdi_port_reconfigure(struct efx_nic *efx)
{
	struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
	u32 caps = (efx->link_advertising ?
		    ethtool_to_mcdi_cap(efx->link_advertising) :
	u32 caps = (efx->link_advertising[0] ?
		    ethtool_linkset_to_mcdi_cap(efx->link_advertising) :
		    phy_cfg->forced_cap);

	return efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx),
@@ -509,34 +528,28 @@ static void efx_mcdi_phy_get_link_ksettings(struct efx_nic *efx,
	struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
	MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
	int rc;
	u32 supported, advertising, lp_advertising;

	supported = mcdi_to_ethtool_cap(phy_cfg->media, phy_cfg->supported_cap);
	advertising = efx->link_advertising;
	cmd->base.speed = efx->link_state.speed;
	cmd->base.duplex = efx->link_state.fd;
	cmd->base.port = mcdi_to_ethtool_media(phy_cfg->media);
	cmd->base.phy_address = phy_cfg->port;
	cmd->base.autoneg = !!(efx->link_advertising & ADVERTISED_Autoneg);
	cmd->base.autoneg = !!(efx->link_advertising[0] & ADVERTISED_Autoneg);
	cmd->base.mdio_support = (efx->mdio.mode_support &
			      (MDIO_SUPPORTS_C45 | MDIO_SUPPORTS_C22));

	ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
						supported);
	ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
						advertising);
	mcdi_to_ethtool_linkset(phy_cfg->media, phy_cfg->supported_cap,
				cmd->link_modes.supported);
	memcpy(cmd->link_modes.advertising, efx->link_advertising,
	       sizeof(__ETHTOOL_DECLARE_LINK_MODE_MASK()));

	BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
	rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
			  outbuf, sizeof(outbuf), NULL);
	if (rc)
		return;
	lp_advertising =
		mcdi_to_ethtool_cap(phy_cfg->media,
				    MCDI_DWORD(outbuf, GET_LINK_OUT_LP_CAP));

	ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.lp_advertising,
						lp_advertising);
	mcdi_to_ethtool_linkset(phy_cfg->media,
				MCDI_DWORD(outbuf, GET_LINK_OUT_LP_CAP),
				cmd->link_modes.lp_advertising);
}

static int
@@ -546,13 +559,9 @@ efx_mcdi_phy_set_link_ksettings(struct efx_nic *efx,
	struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
	u32 caps;
	int rc;
	u32 advertising;

	ethtool_convert_link_mode_to_legacy_u32(&advertising,
						cmd->link_modes.advertising);

	if (cmd->base.autoneg) {
		caps = (ethtool_to_mcdi_cap(advertising) |
		caps = (ethtool_linkset_to_mcdi_cap(cmd->link_modes.advertising) |
			1 << MC_CMD_PHY_CAP_AN_LBN);
	} else if (cmd->base.duplex) {
		switch (cmd->base.speed) {
@@ -561,6 +570,9 @@ efx_mcdi_phy_set_link_ksettings(struct efx_nic *efx,
		case 1000:   caps = 1 << MC_CMD_PHY_CAP_1000FDX_LBN;   break;
		case 10000:  caps = 1 << MC_CMD_PHY_CAP_10000FDX_LBN;  break;
		case 40000:  caps = 1 << MC_CMD_PHY_CAP_40000FDX_LBN;  break;
		case 100000: caps = 1 << MC_CMD_PHY_CAP_100000FDX_LBN; break;
		case 25000:  caps = 1 << MC_CMD_PHY_CAP_25000FDX_LBN;  break;
		case 50000:  caps = 1 << MC_CMD_PHY_CAP_50000FDX_LBN;  break;
		default:     return -EINVAL;
		}
	} else {
@@ -578,11 +590,10 @@ efx_mcdi_phy_set_link_ksettings(struct efx_nic *efx,
		return rc;

	if (cmd->base.autoneg) {
		efx_link_set_advertising(
			efx, advertising | ADVERTISED_Autoneg);
		efx_link_set_advertising(efx, cmd->link_modes.advertising);
		phy_cfg->forced_cap = 0;
	} else {
		efx_link_set_advertising(efx, 0);
		efx_link_clear_advertising(efx);
		phy_cfg->forced_cap = caps;
	}
	return 0;
@@ -985,6 +996,9 @@ static unsigned int efx_mcdi_event_link_speed[] = {
	[MCDI_EVENT_LINKCHANGE_SPEED_1G] = 1000,
	[MCDI_EVENT_LINKCHANGE_SPEED_10G] = 10000,
	[MCDI_EVENT_LINKCHANGE_SPEED_40G] = 40000,
	[MCDI_EVENT_LINKCHANGE_SPEED_25G] = 25000,
	[MCDI_EVENT_LINKCHANGE_SPEED_50G] = 50000,
	[MCDI_EVENT_LINKCHANGE_SPEED_100G] = 100000,
};

void efx_mcdi_process_link_change(struct efx_nic *efx, efx_qword_t *ev)
+1 −1
Original line number Diff line number Diff line
@@ -937,7 +937,7 @@ struct efx_nic {
	unsigned int mdio_bus;
	enum efx_phy_mode phy_mode;

	u32 link_advertising;
	__ETHTOOL_DECLARE_LINK_MODE_MASK(link_advertising);
	struct efx_link_state link_state;
	unsigned int n_link_state_changes;