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Message-Id: <1482272667-1206-1-git-send-email-tremyfr@gmail.com>
Date: Tue, 20 Dec 2016 23:24:26 +0100
From: Philippe Reynes <tremyfr@...il.com>
To: linux-net-drivers@...arflare.com, ecree@...arflare.com,
bkenward@...arflare.com, davem@...emloft.net, andrew@...n.ch
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
Philippe Reynes <tremyfr@...il.com>
Subject: [PATCH 1/2] net: mdio: add mdio45_ethtool_ksettings_get
There is a function in mdio for the old ethtool api gset.
We add a new function mdio45_ethtool_ksettings_get for the
new ethtool api glinksettings.
Signed-off-by: Philippe Reynes <tremyfr@...il.com>
---
drivers/net/mdio.c | 178 ++++++++++++++++++++++++++++++++++++++++++++++++++
include/linux/mdio.h | 21 ++++++
2 files changed, 199 insertions(+), 0 deletions(-)
diff --git a/drivers/net/mdio.c b/drivers/net/mdio.c
index 3e027ed..077364c 100644
--- a/drivers/net/mdio.c
+++ b/drivers/net/mdio.c
@@ -342,6 +342,184 @@ void mdio45_ethtool_gset_npage(const struct mdio_if_info *mdio,
EXPORT_SYMBOL(mdio45_ethtool_gset_npage);
/**
+ * mdio45_ethtool_ksettings_get_npage - get settings for ETHTOOL_GLINKSETTINGS
+ * @mdio: MDIO interface
+ * @cmd: Ethtool request structure
+ * @npage_adv: Modes currently advertised on next pages
+ * @npage_lpa: Modes advertised by link partner on next pages
+ *
+ * The @cmd parameter is expected to have been cleared before calling
+ * mdio45_ethtool_ksettings_get_npage().
+ *
+ * Since the CSRs for auto-negotiation using next pages are not fully
+ * standardised, this function does not attempt to decode them. The
+ * caller must pass them in.
+ */
+void mdio45_ethtool_ksettings_get_npage(const struct mdio_if_info *mdio,
+ struct ethtool_link_ksettings *cmd,
+ u32 npage_adv, u32 npage_lpa)
+{
+ int reg;
+ u32 speed, supported = 0, advertising = 0, lp_advertising = 0;
+
+ BUILD_BUG_ON(MDIO_SUPPORTS_C22 != ETH_MDIO_SUPPORTS_C22);
+ BUILD_BUG_ON(MDIO_SUPPORTS_C45 != ETH_MDIO_SUPPORTS_C45);
+
+ cmd->base.phy_address = mdio->prtad;
+ cmd->base.mdio_support =
+ mdio->mode_support & (MDIO_SUPPORTS_C45 | MDIO_SUPPORTS_C22);
+
+ reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
+ MDIO_CTRL2);
+ switch (reg & MDIO_PMA_CTRL2_TYPE) {
+ case MDIO_PMA_CTRL2_10GBT:
+ case MDIO_PMA_CTRL2_1000BT:
+ case MDIO_PMA_CTRL2_100BTX:
+ case MDIO_PMA_CTRL2_10BT:
+ cmd->base.port = PORT_TP;
+ supported = SUPPORTED_TP;
+ reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
+ MDIO_SPEED);
+ if (reg & MDIO_SPEED_10G)
+ supported |= SUPPORTED_10000baseT_Full;
+ if (reg & MDIO_PMA_SPEED_1000)
+ supported |= (SUPPORTED_1000baseT_Full |
+ SUPPORTED_1000baseT_Half);
+ if (reg & MDIO_PMA_SPEED_100)
+ supported |= (SUPPORTED_100baseT_Full |
+ SUPPORTED_100baseT_Half);
+ if (reg & MDIO_PMA_SPEED_10)
+ supported |= (SUPPORTED_10baseT_Full |
+ SUPPORTED_10baseT_Half);
+ advertising = ADVERTISED_TP;
+ break;
+
+ case MDIO_PMA_CTRL2_10GBCX4:
+ cmd->base.port = PORT_OTHER;
+ supported = 0;
+ advertising = 0;
+ break;
+
+ case MDIO_PMA_CTRL2_10GBKX4:
+ case MDIO_PMA_CTRL2_10GBKR:
+ case MDIO_PMA_CTRL2_1000BKX:
+ cmd->base.port = PORT_OTHER;
+ supported = SUPPORTED_Backplane;
+ reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
+ MDIO_PMA_EXTABLE);
+ if (reg & MDIO_PMA_EXTABLE_10GBKX4)
+ supported |= SUPPORTED_10000baseKX4_Full;
+ if (reg & MDIO_PMA_EXTABLE_10GBKR)
+ supported |= SUPPORTED_10000baseKR_Full;
+ if (reg & MDIO_PMA_EXTABLE_1000BKX)
+ supported |= SUPPORTED_1000baseKX_Full;
+ reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
+ MDIO_PMA_10GBR_FECABLE);
+ if (reg & MDIO_PMA_10GBR_FECABLE_ABLE)
+ supported |= SUPPORTED_10000baseR_FEC;
+ advertising = ADVERTISED_Backplane;
+ break;
+
+ /* All the other defined modes are flavours of optical */
+ default:
+ cmd->base.port = PORT_FIBRE;
+ supported = SUPPORTED_FIBRE;
+ advertising = ADVERTISED_FIBRE;
+ break;
+ }
+
+ if (mdio->mmds & MDIO_DEVS_AN) {
+ supported |= SUPPORTED_Autoneg;
+ reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_AN,
+ MDIO_CTRL1);
+ if (reg & MDIO_AN_CTRL1_ENABLE) {
+ cmd->base.autoneg = AUTONEG_ENABLE;
+ advertising |=
+ ADVERTISED_Autoneg |
+ mdio45_get_an(mdio, MDIO_AN_ADVERTISE) |
+ npage_adv;
+ } else {
+ cmd->base.autoneg = AUTONEG_DISABLE;
+ }
+ } else {
+ cmd->base.autoneg = AUTONEG_DISABLE;
+ }
+
+ if (cmd->base.autoneg) {
+ u32 modes = 0;
+ int an_stat = mdio->mdio_read(mdio->dev, mdio->prtad,
+ MDIO_MMD_AN, MDIO_STAT1);
+
+ /* If AN is complete and successful, report best common
+ * mode, otherwise report best advertised mode.
+ */
+ if (an_stat & MDIO_AN_STAT1_COMPLETE) {
+ lp_advertising =
+ mdio45_get_an(mdio, MDIO_AN_LPA) | npage_lpa;
+ if (an_stat & MDIO_AN_STAT1_LPABLE)
+ lp_advertising |= ADVERTISED_Autoneg;
+ modes = advertising & lp_advertising;
+ }
+ if ((modes & ~ADVERTISED_Autoneg) == 0)
+ modes = advertising;
+
+ if (modes & (ADVERTISED_10000baseT_Full |
+ ADVERTISED_10000baseKX4_Full |
+ ADVERTISED_10000baseKR_Full)) {
+ speed = SPEED_10000;
+ cmd->base.duplex = DUPLEX_FULL;
+ } else if (modes & (ADVERTISED_1000baseT_Full |
+ ADVERTISED_1000baseT_Half |
+ ADVERTISED_1000baseKX_Full)) {
+ speed = SPEED_1000;
+ cmd->base.duplex = !(modes & ADVERTISED_1000baseT_Half);
+ } else if (modes & (ADVERTISED_100baseT_Full |
+ ADVERTISED_100baseT_Half)) {
+ speed = SPEED_100;
+ cmd->base.duplex = !!(modes & ADVERTISED_100baseT_Full);
+ } else {
+ speed = SPEED_10;
+ cmd->base.duplex = !!(modes & ADVERTISED_10baseT_Full);
+ }
+ } else {
+ /* Report forced settings */
+ reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
+ MDIO_CTRL1);
+ speed = (((reg & MDIO_PMA_CTRL1_SPEED1000) ? 100 : 1)
+ * ((reg & MDIO_PMA_CTRL1_SPEED100) ? 100 : 10));
+ cmd->base.duplex = (reg & MDIO_CTRL1_FULLDPLX ||
+ speed == SPEED_10000);
+ }
+
+ cmd->base.speed = speed;
+
+ ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
+ supported);
+ ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
+ advertising);
+ ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.lp_advertising,
+ lp_advertising);
+
+ /* 10GBASE-T MDI/MDI-X */
+ if (cmd->base.port == PORT_TP && (cmd->base.speed == SPEED_10000)) {
+ switch (mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
+ MDIO_PMA_10GBT_SWAPPOL)) {
+ case MDIO_PMA_10GBT_SWAPPOL_ABNX | MDIO_PMA_10GBT_SWAPPOL_CDNX:
+ cmd->base.eth_tp_mdix = ETH_TP_MDI;
+ break;
+ case 0:
+ cmd->base.eth_tp_mdix = ETH_TP_MDI_X;
+ break;
+ default:
+ /* It's complicated... */
+ cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID;
+ break;
+ }
+ }
+}
+EXPORT_SYMBOL(mdio45_ethtool_ksettings_get_npage);
+
+/**
* mdio_mii_ioctl - MII ioctl interface for MDIO (clause 22 or 45) PHYs
* @mdio: MDIO interface
* @mii_data: MII ioctl data structure
diff --git a/include/linux/mdio.h b/include/linux/mdio.h
index bf9d1d7..b6587a4 100644
--- a/include/linux/mdio.h
+++ b/include/linux/mdio.h
@@ -130,6 +130,10 @@ extern int mdio_set_flag(const struct mdio_if_info *mdio,
extern void mdio45_ethtool_gset_npage(const struct mdio_if_info *mdio,
struct ethtool_cmd *ecmd,
u32 npage_adv, u32 npage_lpa);
+extern void
+mdio45_ethtool_ksettings_get_npage(const struct mdio_if_info *mdio,
+ struct ethtool_link_ksettings *cmd,
+ u32 npage_adv, u32 npage_lpa);
/**
* mdio45_ethtool_gset - get settings for ETHTOOL_GSET
@@ -147,6 +151,23 @@ static inline void mdio45_ethtool_gset(const struct mdio_if_info *mdio,
mdio45_ethtool_gset_npage(mdio, ecmd, 0, 0);
}
+/**
+ * mdio45_ethtool_ksettings_get - get settings for ETHTOOL_GLINKSETTINGS
+ * @mdio: MDIO interface
+ * @cmd: Ethtool request structure
+ *
+ * Since the CSRs for auto-negotiation using next pages are not fully
+ * standardised, this function does not attempt to decode them. Use
+ * mdio45_ethtool_ksettings_get_npage() to specify advertisement bits
+ * from next pages.
+ */
+static inline void
+mdio45_ethtool_ksettings_get(const struct mdio_if_info *mdio,
+ struct ethtool_link_ksettings *cmd)
+{
+ mdio45_ethtool_ksettings_get_npage(mdio, cmd, 0, 0);
+}
+
extern int mdio_mii_ioctl(const struct mdio_if_info *mdio,
struct mii_ioctl_data *mii_data, int cmd);
--
1.7.4.4
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