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Message-ID: <20241114153603.307872-3-maxime.chevallier@bootlin.com>
Date: Thu, 14 Nov 2024 16:35:53 +0100
From: Maxime Chevallier <maxime.chevallier@...tlin.com>
To: davem@...emloft.net,
Andrew Lunn <andrew@...n.ch>,
Jakub Kicinski <kuba@...nel.org>,
Eric Dumazet <edumazet@...gle.com>,
Paolo Abeni <pabeni@...hat.com>,
Russell King <linux@...linux.org.uk>,
Christophe Leroy <christophe.leroy@...roup.eu>,
Heiner Kallweit <hkallweit1@...il.com>
Cc: Maxime Chevallier <maxime.chevallier@...tlin.com>,
netdev@...r.kernel.org,
linux-kernel@...r.kernel.org,
thomas.petazzoni@...tlin.com,
Herve Codina <herve.codina@...tlin.com>,
Uwe Kleine-König <u.kleine-koenig@...libre.com>,
linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH net-next v2 02/10] net: freescale: ucc_geth: split adjust_link for phylink conversion
Preparing the phylink conversion, split the adjust_link callbaclk, by
clearly separating the mac configuration, link_up and link_down phases.
Reviewed-by: Andrew Lunn <andrew@...n.ch>
Signed-off-by: Maxime Chevallier <maxime.chevallier@...tlin.com>
---
V2: No changes.
Russell, I did see your comment with regards to the overall usefulness
of this patch, hopefully now patch 10 is a easier to digest now, but if
now I'll just merge that one with the actual phylink switch in patch 10.
drivers/net/ethernet/freescale/ucc_geth.c | 180 +++++++++++-----------
1 file changed, 93 insertions(+), 87 deletions(-)
diff --git a/drivers/net/ethernet/freescale/ucc_geth.c b/drivers/net/ethernet/freescale/ucc_geth.c
index 80540c817c4e..6286cd185a35 100644
--- a/drivers/net/ethernet/freescale/ucc_geth.c
+++ b/drivers/net/ethernet/freescale/ucc_geth.c
@@ -1548,105 +1548,111 @@ static void ugeth_activate(struct ucc_geth_private *ugeth)
__netdev_watchdog_up(ugeth->ndev);
}
-/* Called every time the controller might need to be made
- * aware of new link state. The PHY code conveys this
- * information through variables in the ugeth structure, and this
- * function converts those variables into the appropriate
- * register values, and can bring down the device if needed.
- */
-
-static void adjust_link(struct net_device *dev)
+static void ugeth_link_up(struct ucc_geth_private *ugeth,
+ struct phy_device *phy,
+ phy_interface_t interface, int speed, int duplex)
{
- struct ucc_geth_private *ugeth = netdev_priv(dev);
- struct ucc_geth __iomem *ug_regs;
- struct ucc_fast __iomem *uf_regs;
- struct phy_device *phydev = ugeth->phydev;
+ struct ucc_geth __iomem *ug_regs = ugeth->ug_regs;
+ struct ucc_fast __iomem *uf_regs = ugeth->uccf->uf_regs;
+ u32 tempval = in_be32(&ug_regs->maccfg2);
+ u32 upsmr = in_be32(&uf_regs->upsmr);
int new_state = 0;
- ug_regs = ugeth->ug_regs;
- uf_regs = ugeth->uccf->uf_regs;
-
- if (phydev->link) {
- u32 tempval = in_be32(&ug_regs->maccfg2);
- u32 upsmr = in_be32(&uf_regs->upsmr);
- /* Now we make sure that we can be in full duplex mode.
- * If not, we operate in half-duplex mode. */
- if (phydev->duplex != ugeth->oldduplex) {
- new_state = 1;
- if (!(phydev->duplex))
- tempval &= ~(MACCFG2_FDX);
- else
- tempval |= MACCFG2_FDX;
- ugeth->oldduplex = phydev->duplex;
- }
+ /* Now we make sure that we can be in full duplex mode.
+ * If not, we operate in half-duplex mode.
+ */
+ if (duplex != ugeth->oldduplex) {
+ new_state = 1;
+ if (duplex == DUPLEX_HALF)
+ tempval &= ~(MACCFG2_FDX);
+ else
+ tempval |= MACCFG2_FDX;
+ ugeth->oldduplex = duplex;
+ }
- if (phydev->speed != ugeth->oldspeed) {
- new_state = 1;
- switch (phydev->speed) {
- case SPEED_1000:
- tempval = ((tempval &
- ~(MACCFG2_INTERFACE_MODE_MASK)) |
- MACCFG2_INTERFACE_MODE_BYTE);
- break;
- case SPEED_100:
- case SPEED_10:
- tempval = ((tempval &
- ~(MACCFG2_INTERFACE_MODE_MASK)) |
- MACCFG2_INTERFACE_MODE_NIBBLE);
- /* if reduced mode, re-set UPSMR.R10M */
- if ((ugeth->phy_interface == PHY_INTERFACE_MODE_RMII) ||
- (ugeth->phy_interface == PHY_INTERFACE_MODE_RGMII) ||
- (ugeth->phy_interface == PHY_INTERFACE_MODE_RGMII_ID) ||
- (ugeth->phy_interface == PHY_INTERFACE_MODE_RGMII_RXID) ||
- (ugeth->phy_interface == PHY_INTERFACE_MODE_RGMII_TXID) ||
- (ugeth->phy_interface == PHY_INTERFACE_MODE_RTBI)) {
- if (phydev->speed == SPEED_10)
- upsmr |= UCC_GETH_UPSMR_R10M;
- else
- upsmr &= ~UCC_GETH_UPSMR_R10M;
- }
- break;
- default:
- if (netif_msg_link(ugeth))
- pr_warn(
- "%s: Ack! Speed (%d) is not 10/100/1000!",
- dev->name, phydev->speed);
- break;
+ if (speed != ugeth->oldspeed) {
+ new_state = 1;
+ switch (speed) {
+ case SPEED_1000:
+ tempval = ((tempval &
+ ~(MACCFG2_INTERFACE_MODE_MASK)) |
+ MACCFG2_INTERFACE_MODE_BYTE);
+ break;
+ case SPEED_100:
+ case SPEED_10:
+ tempval = ((tempval &
+ ~(MACCFG2_INTERFACE_MODE_MASK)) |
+ MACCFG2_INTERFACE_MODE_NIBBLE);
+ /* if reduced mode, re-set UPSMR.R10M */
+ if (interface == PHY_INTERFACE_MODE_RMII ||
+ phy_interface_mode_is_rgmii(interface) ||
+ interface == PHY_INTERFACE_MODE_RTBI) {
+ if (speed == SPEED_10)
+ upsmr |= UCC_GETH_UPSMR_R10M;
+ else
+ upsmr &= ~UCC_GETH_UPSMR_R10M;
}
- ugeth->oldspeed = phydev->speed;
+ break;
+ default:
+ if (netif_msg_link(ugeth))
+ pr_warn("%s: Speed (%d) is not 10/100/1000!",
+ netdev_name(ugeth->ndev), speed);
+ break;
}
+ ugeth->oldspeed = speed;
+ }
- if (!ugeth->oldlink) {
- new_state = 1;
- ugeth->oldlink = 1;
- }
+ if (!ugeth->oldlink) {
+ new_state = 1;
+ ugeth->oldlink = 1;
+ }
- if (new_state) {
- /*
- * To change the MAC configuration we need to disable
- * the controller. To do so, we have to either grab
- * ugeth->lock, which is a bad idea since 'graceful
- * stop' commands might take quite a while, or we can
- * quiesce driver's activity.
- */
- ugeth_quiesce(ugeth);
- ugeth_disable(ugeth, COMM_DIR_RX_AND_TX);
+ if (new_state) {
+ /*
+ * To change the MAC configuration we need to disable
+ * the controller. To do so, we have to either grab
+ * ugeth->lock, which is a bad idea since 'graceful
+ * stop' commands might take quite a while, or we can
+ * quiesce driver's activity.
+ */
+ ugeth_quiesce(ugeth);
+ ugeth_disable(ugeth, COMM_DIR_RX_AND_TX);
- out_be32(&ug_regs->maccfg2, tempval);
- out_be32(&uf_regs->upsmr, upsmr);
+ out_be32(&ug_regs->maccfg2, tempval);
+ out_be32(&uf_regs->upsmr, upsmr);
- ugeth_enable(ugeth, COMM_DIR_RX_AND_TX);
- ugeth_activate(ugeth);
- }
- } else if (ugeth->oldlink) {
- new_state = 1;
- ugeth->oldlink = 0;
- ugeth->oldspeed = 0;
- ugeth->oldduplex = -1;
+ ugeth_enable(ugeth, COMM_DIR_RX_AND_TX);
+ ugeth_activate(ugeth);
}
- if (new_state && netif_msg_link(ugeth))
- phy_print_status(phydev);
+ if (netif_msg_link(ugeth))
+ phy_print_status(phy);
+}
+
+static void ugeth_link_down(struct ucc_geth_private *ugeth)
+{
+ ugeth->oldlink = 0;
+ ugeth->oldspeed = 0;
+ ugeth->oldduplex = -1;
+}
+
+/* Called every time the controller might need to be made
+ * aware of new link state. The PHY code conveys this
+ * information through variables in the ugeth structure, and this
+ * function converts those variables into the appropriate
+ * register values, and can bring down the device if needed.
+ */
+
+static void adjust_link(struct net_device *dev)
+{
+ struct ucc_geth_private *ugeth = netdev_priv(dev);
+ struct phy_device *phydev = ugeth->phydev;
+
+ if (phydev->link)
+ ugeth_link_up(ugeth, phydev, phydev->interface,
+ phydev->speed, phydev->duplex);
+ else
+ ugeth_link_down(ugeth);
}
/* Initialize TBI PHY interface for communicating with the
--
2.47.0
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