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Message-Id: <20240417205048.3542839-3-paweldembicki@gmail.com>
Date: Wed, 17 Apr 2024 22:50:45 +0200
From: Pawel Dembicki <paweldembicki@...il.com>
To: netdev@...r.kernel.org
Cc: Pawel Dembicki <paweldembicki@...il.com>,
Andrew Lunn <andrew@...n.ch>,
Florian Fainelli <f.fainelli@...il.com>,
Vladimir Oltean <olteanv@...il.com>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Russell King <linux@...linux.org.uk>,
linux-kernel@...r.kernel.org
Subject: [PATCH net-next v2 2/5] net: dsa: vsc73xx: convert to PHYLINK
This patch replaces the adjust_link api with the phylink apis that provide
equivalent functionality.
The remaining functionality from the adjust_link is now covered in the
mac_link_* and mac_config from phylink_mac_ops structure.
Removes:
adjust_link
Adds phylink_mac_ops structure:
mac_config
mac_link_up
mac_link_down
Signed-off-by: Pawel Dembicki <paweldembicki@...il.com>
---
v2:
- use 'phylink_mac_ops' structure instead '.phylink_mac*'
drivers/net/dsa/vitesse-vsc73xx-core.c | 242 ++++++++++++-------------
1 file changed, 116 insertions(+), 126 deletions(-)
diff --git a/drivers/net/dsa/vitesse-vsc73xx-core.c b/drivers/net/dsa/vitesse-vsc73xx-core.c
index ab5771d4d828..3f8edac9aa5c 100644
--- a/drivers/net/dsa/vitesse-vsc73xx-core.c
+++ b/drivers/net/dsa/vitesse-vsc73xx-core.c
@@ -717,51 +717,44 @@ static void vsc73xx_init_port(struct vsc73xx *vsc, int port)
port, VSC73XX_C_RX0, 0);
}
-static void vsc73xx_adjust_enable_port(struct vsc73xx *vsc,
- int port, struct phy_device *phydev,
- u32 initval)
+static void vsc73xx_reset_port(struct vsc73xx *vsc, int port, u32 initval)
{
- u32 val = initval;
- u8 seed;
-
- /* Reset this port FIXME: break out subroutine */
- val |= VSC73XX_MAC_CFG_RESET;
- vsc73xx_write(vsc, VSC73XX_BLOCK_MAC, port, VSC73XX_MAC_CFG, val);
-
- /* Seed the port randomness with randomness */
- get_random_bytes(&seed, 1);
- val |= seed << VSC73XX_MAC_CFG_SEED_OFFSET;
- val |= VSC73XX_MAC_CFG_SEED_LOAD;
- val |= VSC73XX_MAC_CFG_WEXC_DIS;
- vsc73xx_write(vsc, VSC73XX_BLOCK_MAC, port, VSC73XX_MAC_CFG, val);
+ int ret, err;
+ u32 val;
- /* Flow control for the PHY facing ports:
- * Use a zero delay pause frame when pause condition is left
- * Obey pause control frames
- * When generating pause frames, use 0xff as pause value
- */
- vsc73xx_write(vsc, VSC73XX_BLOCK_MAC, port, VSC73XX_FCCONF,
- VSC73XX_FCCONF_ZERO_PAUSE_EN |
- VSC73XX_FCCONF_FLOW_CTRL_OBEY |
- 0xff);
+ /* Disable RX on this port */
+ vsc73xx_update_bits(vsc, VSC73XX_BLOCK_MAC, port,
+ VSC73XX_MAC_CFG,
+ VSC73XX_MAC_CFG_RX_EN, 0);
- /* Disallow backward dropping of frames from this port */
+ /* Discard packets */
vsc73xx_update_bits(vsc, VSC73XX_BLOCK_ARBITER, 0,
- VSC73XX_SBACKWDROP, BIT(port), 0);
+ VSC73XX_ARBDISC, BIT(port), BIT(port));
+
+ /* Wait until queue is empty */
+ ret = read_poll_timeout(vsc73xx_read, err,
+ err < 0 || (val & BIT(port)),
+ VSC73XX_POLL_SLEEP_US,
+ VSC73XX_POLL_TIMEOUT_US, false,
+ vsc, VSC73XX_BLOCK_ARBITER, 0,
+ VSC73XX_ARBEMPTY, &val);
+ if (ret)
+ dev_err(vsc->dev,
+ "timeout waiting for block arbiter\n");
+ else if (err < 0)
+ dev_err(vsc->dev, "error reading arbiter\n");
- /* Enable TX, RX, deassert reset, stop loading seed */
- vsc73xx_update_bits(vsc, VSC73XX_BLOCK_MAC, port,
- VSC73XX_MAC_CFG,
- VSC73XX_MAC_CFG_RESET | VSC73XX_MAC_CFG_SEED_LOAD |
- VSC73XX_MAC_CFG_TX_EN | VSC73XX_MAC_CFG_RX_EN,
- VSC73XX_MAC_CFG_TX_EN | VSC73XX_MAC_CFG_RX_EN);
+ /* Put this port into reset */
+ vsc73xx_write(vsc, VSC73XX_BLOCK_MAC, port, VSC73XX_MAC_CFG,
+ VSC73XX_MAC_CFG_RESET | initval);
}
-static void vsc73xx_adjust_link(struct dsa_switch *ds, int port,
- struct phy_device *phydev)
+static void vsc73xx_mac_config(struct phylink_config *config, unsigned int mode,
+ const struct phylink_link_state *state)
{
- struct vsc73xx *vsc = ds->priv;
- u32 val;
+ struct dsa_port *dp = dsa_phylink_to_port(config);
+ struct vsc73xx *vsc = dp->ds->priv;
+ int port = dp->index;
/* Special handling of the CPU-facing port */
if (port == CPU_PORT) {
@@ -778,102 +771,93 @@ static void vsc73xx_adjust_link(struct dsa_switch *ds, int port,
VSC73XX_ADVPORTM_ENA_GTX |
VSC73XX_ADVPORTM_DDR_MODE);
}
+}
+
+static void vsc73xx_mac_link_down(struct phylink_config *config,
+ unsigned int mode, phy_interface_t interface)
+{
+ struct dsa_port *dp = dsa_phylink_to_port(config);
+ struct vsc73xx *vsc = dp->ds->priv;
+ int port = dp->index;
- /* This is the MAC confiuration that always need to happen
- * after a PHY or the CPU port comes up or down.
+ /* This routine is described in the datasheet (below ARBDISC register
+ * description)
*/
- if (!phydev->link) {
- int ret, err;
-
- dev_dbg(vsc->dev, "port %d: went down\n",
- port);
-
- /* Disable RX on this port */
- vsc73xx_update_bits(vsc, VSC73XX_BLOCK_MAC, port,
- VSC73XX_MAC_CFG,
- VSC73XX_MAC_CFG_RX_EN, 0);
-
- /* Discard packets */
- vsc73xx_update_bits(vsc, VSC73XX_BLOCK_ARBITER, 0,
- VSC73XX_ARBDISC, BIT(port), BIT(port));
-
- /* Wait until queue is empty */
- ret = read_poll_timeout(vsc73xx_read, err,
- err < 0 || (val & BIT(port)),
- VSC73XX_POLL_SLEEP_US,
- VSC73XX_POLL_TIMEOUT_US, false,
- vsc, VSC73XX_BLOCK_ARBITER, 0,
- VSC73XX_ARBEMPTY, &val);
- if (ret)
- dev_err(vsc->dev,
- "timeout waiting for block arbiter\n");
- else if (err < 0)
- dev_err(vsc->dev, "error reading arbiter\n");
-
- /* Put this port into reset */
- vsc73xx_write(vsc, VSC73XX_BLOCK_MAC, port, VSC73XX_MAC_CFG,
- VSC73XX_MAC_CFG_RESET);
-
- /* Accept packets again */
- vsc73xx_update_bits(vsc, VSC73XX_BLOCK_ARBITER, 0,
- VSC73XX_ARBDISC, BIT(port), 0);
-
- /* Allow backward dropping of frames from this port */
- vsc73xx_update_bits(vsc, VSC73XX_BLOCK_ARBITER, 0,
- VSC73XX_SBACKWDROP, BIT(port), BIT(port));
-
- /* Receive mask (disable forwarding) */
- vsc73xx_update_bits(vsc, VSC73XX_BLOCK_ANALYZER, 0,
- VSC73XX_RECVMASK, BIT(port), 0);
+ vsc73xx_reset_port(vsc, port, 0);
- return;
- }
+ /* Allow backward dropping of frames from this port */
+ vsc73xx_update_bits(vsc, VSC73XX_BLOCK_ARBITER, 0,
+ VSC73XX_SBACKWDROP, BIT(port), BIT(port));
- /* Figure out what speed was negotiated */
- if (phydev->speed == SPEED_1000) {
- dev_dbg(vsc->dev, "port %d: 1000 Mbit mode full duplex\n",
- port);
-
- /* Set up default for internal port or external RGMII */
- if (phydev->interface == PHY_INTERFACE_MODE_RGMII)
- val = VSC73XX_MAC_CFG_1000M_F_RGMII;
- else
- val = VSC73XX_MAC_CFG_1000M_F_PHY;
- vsc73xx_adjust_enable_port(vsc, port, phydev, val);
- } else if (phydev->speed == SPEED_100) {
- if (phydev->duplex == DUPLEX_FULL) {
- val = VSC73XX_MAC_CFG_100_10M_F_PHY;
- dev_dbg(vsc->dev,
- "port %d: 100 Mbit full duplex mode\n",
- port);
- } else {
- val = VSC73XX_MAC_CFG_100_10M_H_PHY;
- dev_dbg(vsc->dev,
- "port %d: 100 Mbit half duplex mode\n",
- port);
- }
- vsc73xx_adjust_enable_port(vsc, port, phydev, val);
- } else if (phydev->speed == SPEED_10) {
- if (phydev->duplex == DUPLEX_FULL) {
- val = VSC73XX_MAC_CFG_100_10M_F_PHY;
- dev_dbg(vsc->dev,
- "port %d: 10 Mbit full duplex mode\n",
- port);
- } else {
- val = VSC73XX_MAC_CFG_100_10M_H_PHY;
- dev_dbg(vsc->dev,
- "port %d: 10 Mbit half duplex mode\n",
- port);
- }
- vsc73xx_adjust_enable_port(vsc, port, phydev, val);
- } else {
- dev_err(vsc->dev,
- "could not adjust link: unknown speed\n");
- }
+ /* Receive mask (disable forwarding) */
+ vsc73xx_update_bits(vsc, VSC73XX_BLOCK_ANALYZER, 0,
+ VSC73XX_RECVMASK, BIT(port), 0);
+}
+
+static void vsc73xx_mac_link_up(struct phylink_config *config,
+ struct phy_device *phy, unsigned int mode,
+ phy_interface_t interface, int speed,
+ int duplex, bool tx_pause, bool rx_pause)
+{
+ struct dsa_port *dp = dsa_phylink_to_port(config);
+ struct vsc73xx *vsc = dp->ds->priv;
+ int port = dp->index;
+ u32 val;
+ u8 seed;
+
+ if (speed == SPEED_1000)
+ val = VSC73XX_MAC_CFG_GIGA_MODE | VSC73XX_MAC_CFG_TX_IPG_1000M;
+ else
+ val = VSC73XX_MAC_CFG_TX_IPG_100_10M;
+
+ if (interface == PHY_INTERFACE_MODE_RGMII)
+ val |= VSC73XX_MAC_CFG_CLK_SEL_1000M;
+ else
+ val |= VSC73XX_MAC_CFG_CLK_SEL_EXT;
+
+ if (duplex == DUPLEX_FULL)
+ val |= VSC73XX_MAC_CFG_FDX;
+
+ /* This routine is described in the datasheet (below ARBDISC register
+ * description)
+ */
+ vsc73xx_reset_port(vsc, port, val);
+
+ /* Seed the port randomness with randomness */
+ get_random_bytes(&seed, 1);
+ val |= seed << VSC73XX_MAC_CFG_SEED_OFFSET;
+ val |= VSC73XX_MAC_CFG_SEED_LOAD;
+ val |= VSC73XX_MAC_CFG_WEXC_DIS;
+ vsc73xx_write(vsc, VSC73XX_BLOCK_MAC, port, VSC73XX_MAC_CFG, val);
+
+ /* Flow control for the PHY facing ports:
+ * Use a zero delay pause frame when pause condition is left
+ * Obey pause control frames
+ * When generating pause frames, use 0xff as pause value
+ */
+ vsc73xx_write(vsc, VSC73XX_BLOCK_MAC, port, VSC73XX_FCCONF,
+ VSC73XX_FCCONF_ZERO_PAUSE_EN |
+ VSC73XX_FCCONF_FLOW_CTRL_OBEY |
+ 0xff);
+
+ /* Accept packets again */
+ vsc73xx_update_bits(vsc, VSC73XX_BLOCK_ARBITER, 0,
+ VSC73XX_ARBDISC, BIT(port), 0);
/* Enable port (forwarding) in the receieve mask */
vsc73xx_update_bits(vsc, VSC73XX_BLOCK_ANALYZER, 0,
VSC73XX_RECVMASK, BIT(port), BIT(port));
+
+ /* Disallow backward dropping of frames from this port */
+ vsc73xx_update_bits(vsc, VSC73XX_BLOCK_ARBITER, 0,
+ VSC73XX_SBACKWDROP, BIT(port), 0);
+
+ /* Enable TX, RX, deassert reset, stop loading seed */
+ vsc73xx_update_bits(vsc, VSC73XX_BLOCK_MAC, port,
+ VSC73XX_MAC_CFG,
+ VSC73XX_MAC_CFG_RESET | VSC73XX_MAC_CFG_SEED_LOAD |
+ VSC73XX_MAC_CFG_TX_EN | VSC73XX_MAC_CFG_RX_EN,
+ VSC73XX_MAC_CFG_TX_EN | VSC73XX_MAC_CFG_RX_EN);
}
static int vsc73xx_port_enable(struct dsa_switch *ds, int port,
@@ -1055,12 +1039,17 @@ static void vsc73xx_phylink_get_caps(struct dsa_switch *dsa, int port,
config->mac_capabilities = MAC_SYM_PAUSE | MAC_10 | MAC_100 | MAC_1000;
}
+static const struct phylink_mac_ops vsc73xx_phylink_mac_ops = {
+ .mac_config = vsc73xx_mac_config,
+ .mac_link_down = vsc73xx_mac_link_down,
+ .mac_link_up = vsc73xx_mac_link_up,
+};
+
static const struct dsa_switch_ops vsc73xx_ds_ops = {
.get_tag_protocol = vsc73xx_get_tag_protocol,
.setup = vsc73xx_setup,
.phy_read = vsc73xx_phy_read,
.phy_write = vsc73xx_phy_write,
- .adjust_link = vsc73xx_adjust_link,
.get_strings = vsc73xx_get_strings,
.get_ethtool_stats = vsc73xx_get_ethtool_stats,
.get_sset_count = vsc73xx_get_sset_count,
@@ -1217,6 +1206,7 @@ int vsc73xx_probe(struct vsc73xx *vsc)
vsc->ds->priv = vsc;
vsc->ds->ops = &vsc73xx_ds_ops;
+ vsc->ds->phylink_mac_ops = &vsc73xx_phylink_mac_ops;
ret = dsa_register_switch(vsc->ds);
if (ret) {
dev_err(dev, "unable to register switch (%d)\n", ret);
--
2.34.1
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