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Message-ID: <c7c6f364-1d30-8745-82ca-d605287415a8@solarflare.com>
Date: Wed, 10 Jan 2018 18:00:14 +0000
From: Edward Cree <ecree@...arflare.com>
To: <davem@...emloft.net>
CC: <linux-net-drivers@...arflare.com>, <netdev@...r.kernel.org>
Subject: [PATCH net-next 2/3] sfc: support the ethtool ksettings API properly
so that 25/50/100G works
Store and handle ethtool link mode masks within the driver instead of
just a single u32. However, quite a significant amount of existing code
wants to manipulate the masks directly, and thus now uses the first
unsigned long (i.e. mask[0]) as though it were a legacy u32 mask. This
is ok because all the bits that code is interested in are in the first
32 bits of the mask; but it might be a good idea to change them in
future to use the proper bitmap API.
Signed-off-by: Edward Cree <ecree@...arflare.com>
---
drivers/net/ethernet/sfc/efx.c | 43 +++++++-----
drivers/net/ethernet/sfc/efx.h | 4 +-
drivers/net/ethernet/sfc/ethtool.c | 6 +-
drivers/net/ethernet/sfc/mcdi_port.c | 120 ++++++++++++++++------------------
drivers/net/ethernet/sfc/net_driver.h | 2 +-
5 files changed, 92 insertions(+), 83 deletions(-)
diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c
index 3780161de5a1..12f0abc30cb1 100644
--- a/drivers/net/ethernet/sfc/efx.c
+++ b/drivers/net/ethernet/sfc/efx.c
@@ -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)
- efx->wanted_fc |= (EFX_FC_TX | EFX_FC_RX);
- else
- efx->wanted_fc &= ~(EFX_FC_TX | EFX_FC_RX);
- if (advertising & ADVERTISED_Asym_Pause)
- efx->wanted_fc ^= EFX_FC_TX;
- }
+ 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[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 |
- ADVERTISED_Asym_Pause);
+ efx->link_advertising[0] |= (ADVERTISED_Pause |
+ ADVERTISED_Asym_Pause);
else
- efx->link_advertising &= ~(ADVERTISED_Pause |
- ADVERTISED_Asym_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;
}
}
diff --git a/drivers/net/ethernet/sfc/efx.h b/drivers/net/ethernet/sfc/efx.h
index 16da3e9a6000..0cddc5ad77b1 100644
--- a/drivers/net/ethernet/sfc/efx.h
+++ b/drivers/net/ethernet/sfc/efx.h
@@ -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)
diff --git a/drivers/net/ethernet/sfc/ethtool.c b/drivers/net/ethernet/sfc/ethtool.c
index 3747b5644110..4db2dc2bf52f 100644
--- a/drivers/net/ethernet/sfc/ethtool.c
+++ b/drivers/net/ethernet/sfc/ethtool.c
@@ -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) {
diff --git a/drivers/net/ethernet/sfc/mcdi_port.c b/drivers/net/ethernet/sfc/mcdi_port.c
index 35593d67ab54..6d913dd68d62 100644
--- a/drivers/net/ethernet/sfc/mcdi_port.c
+++ b/drivers/net/ethernet/sfc/mcdi_port.c
@@ -171,89 +171,96 @@ 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);
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(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 +292,7 @@ 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 +378,8 @@ 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 +442,8 @@ 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 +516,28 @@ 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
@@ -546,14 +547,10 @@ 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) |
- 1 << MC_CMD_PHY_CAP_AN_LBN);
+ 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) {
case 10: caps = 1 << MC_CMD_PHY_CAP_10FDX_LBN; break;
@@ -581,11 +578,10 @@ 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;
diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h
index 4cedc5c4c6d9..3dd42f3136fe 100644
--- a/drivers/net/ethernet/sfc/net_driver.h
+++ b/drivers/net/ethernet/sfc/net_driver.h
@@ -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;
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