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Message-ID: <1560642367-26425-1-git-send-email-pthombar@cadence.com>
Date: Sun, 16 Jun 2019 00:46:07 +0100
From: Parshuram Thombare <pthombar@...ence.com>
To: <andrew@...n.ch>, <nicolas.ferre@...rochip.com>,
<davem@...emloft.net>, <f.fainelli@...il.com>
CC: <netdev@...r.kernel.org>, <hkallweit1@...il.com>,
<linux-kernel@...r.kernel.org>, <rafalc@...ence.com>,
<aniljoy@...ence.com>, <piotrs@...ence.com>, <pthombar@...ence.com>
Subject: [PATCH 1/6] net: macb: add phylink support
This patch replace phylib API's by phylink API's.
Signed-off-by: Parshuram Thombare <pthombar@...ence.com>
---
drivers/net/ethernet/cadence/Kconfig | 2 +-
drivers/net/ethernet/cadence/macb.h | 3 +
drivers/net/ethernet/cadence/macb_main.c | 288 +++++++++++++----------
3 files changed, 173 insertions(+), 120 deletions(-)
diff --git a/drivers/net/ethernet/cadence/Kconfig b/drivers/net/ethernet/cadence/Kconfig
index 1766697c9c5a..d71411a71587 100644
--- a/drivers/net/ethernet/cadence/Kconfig
+++ b/drivers/net/ethernet/cadence/Kconfig
@@ -22,7 +22,7 @@ if NET_VENDOR_CADENCE
config MACB
tristate "Cadence MACB/GEM support"
depends on HAS_DMA
- select PHYLIB
+ select PHYLINK
---help---
The Cadence MACB ethernet interface is found on many Atmel AT32 and
AT91 parts. This driver also supports the Cadence GEM (Gigabit
diff --git a/drivers/net/ethernet/cadence/macb.h b/drivers/net/ethernet/cadence/macb.h
index 00ee5e8e0ff0..35ed13236c8b 100644
--- a/drivers/net/ethernet/cadence/macb.h
+++ b/drivers/net/ethernet/cadence/macb.h
@@ -14,6 +14,7 @@
#include <linux/ptp_clock_kernel.h>
#include <linux/net_tstamp.h>
#include <linux/interrupt.h>
+#include <linux/phylink.h>
#if defined(CONFIG_ARCH_DMA_ADDR_T_64BIT) || defined(CONFIG_MACB_USE_HWSTAMP)
#define MACB_EXT_DESC
@@ -1227,6 +1228,8 @@ struct macb {
u32 rx_intr_mask;
struct macb_pm_data pm_data;
+ struct phylink *pl;
+ struct phylink_config pl_config;
};
#ifdef CONFIG_MACB_USE_HWSTAMP
diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c
index f825e3960540..52d5e5efe2ad 100644
--- a/drivers/net/ethernet/cadence/macb_main.c
+++ b/drivers/net/ethernet/cadence/macb_main.c
@@ -38,6 +38,7 @@
#include <linux/tcp.h>
#include <linux/iopoll.h>
#include <linux/pm_runtime.h>
+#include <linux/phylink.h>
#include "macb.h"
#define MACB_RX_BUFFER_SIZE 128
@@ -428,115 +429,146 @@ static void macb_set_tx_clk(struct clk *clk, int speed, struct net_device *dev)
netdev_err(dev, "adjusting tx_clk failed.\n");
}
-static void macb_handle_link_change(struct net_device *dev)
+static void gem_phylink_validate(struct phylink_config *pl_config,
+ unsigned long *supported,
+ struct phylink_link_state *state)
{
- struct macb *bp = netdev_priv(dev);
- struct phy_device *phydev = dev->phydev;
+ struct net_device *netdev = to_net_dev(pl_config->dev);
+ struct macb *bp = netdev_priv(netdev);
+ __ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };
+
+ switch (state->interface) {
+ case PHY_INTERFACE_MODE_GMII:
+ case PHY_INTERFACE_MODE_RGMII:
+ if (bp->caps & MACB_CAPS_GIGABIT_MODE_AVAILABLE) {
+ phylink_set(mask, 1000baseT_Full);
+ phylink_set(mask, 1000baseX_Full);
+ if (!(bp->caps & MACB_CAPS_NO_GIGABIT_HALF)) {
+ phylink_set(mask, 1000baseT_Half);
+ phylink_set(mask, 1000baseT_Half);
+ }
+ }
+ /* fallthrough */
+ case PHY_INTERFACE_MODE_MII:
+ case PHY_INTERFACE_MODE_RMII:
+ phylink_set(mask, 10baseT_Half);
+ phylink_set(mask, 10baseT_Full);
+ phylink_set(mask, 100baseT_Half);
+ phylink_set(mask, 100baseT_Full);
+ break;
+ default:
+ break;
+ }
+
+ bitmap_and(supported, supported, mask, __ETHTOOL_LINK_MODE_MASK_NBITS);
+ bitmap_and(state->advertising, state->advertising, mask,
+ __ETHTOOL_LINK_MODE_MASK_NBITS);
+}
+
+static int gem_phylink_mac_link_state(struct phylink_config *pl_config,
+ struct phylink_link_state *state)
+{
+ struct net_device *netdev = to_net_dev(pl_config->dev);
+ struct macb *bp = netdev_priv(netdev);
+
+ state->speed = bp->speed;
+ state->duplex = bp->duplex;
+ state->link = bp->link;
+ return 1;
+}
+
+static void gem_mac_config(struct phylink_config *pl_config, unsigned int mode,
+ const struct phylink_link_state *state)
+{
+ struct net_device *netdev = to_net_dev(pl_config->dev);
+ struct macb *bp = netdev_priv(netdev);
unsigned long flags;
- int status_change = 0;
spin_lock_irqsave(&bp->lock, flags);
- if (phydev->link) {
- if ((bp->speed != phydev->speed) ||
- (bp->duplex != phydev->duplex)) {
- u32 reg;
-
- reg = macb_readl(bp, NCFGR);
- reg &= ~(MACB_BIT(SPD) | MACB_BIT(FD));
- if (macb_is_gem(bp))
- reg &= ~GEM_BIT(GBE);
+ if (bp->speed != state->speed ||
+ bp->duplex != state->duplex) {
+ u32 reg;
- if (phydev->duplex)
- reg |= MACB_BIT(FD);
- if (phydev->speed == SPEED_100)
- reg |= MACB_BIT(SPD);
- if (phydev->speed == SPEED_1000 &&
- bp->caps & MACB_CAPS_GIGABIT_MODE_AVAILABLE)
- reg |= GEM_BIT(GBE);
+ reg = macb_readl(bp, NCFGR);
+ reg &= ~(MACB_BIT(SPD) | MACB_BIT(FD));
+ if (macb_is_gem(bp))
+ reg &= ~GEM_BIT(GBE);
- macb_or_gem_writel(bp, NCFGR, reg);
+ if (state->duplex)
+ reg |= MACB_BIT(FD);
+ if (state->speed == SPEED_100)
+ reg |= MACB_BIT(SPD);
+ if (state->speed == SPEED_1000 &&
+ bp->caps & MACB_CAPS_GIGABIT_MODE_AVAILABLE)
+ reg |= GEM_BIT(GBE);
- bp->speed = phydev->speed;
- bp->duplex = phydev->duplex;
- status_change = 1;
- }
- }
+ macb_or_gem_writel(bp, NCFGR, reg);
- if (phydev->link != bp->link) {
- if (!phydev->link) {
- bp->speed = 0;
- bp->duplex = -1;
- }
- bp->link = phydev->link;
+ bp->speed = state->speed;
+ bp->duplex = state->duplex;
- status_change = 1;
+ if (state->link)
+ macb_set_tx_clk(bp->tx_clk, state->speed, netdev);
}
spin_unlock_irqrestore(&bp->lock, flags);
+}
- if (status_change) {
- if (phydev->link) {
- /* Update the TX clock rate if and only if the link is
- * up and there has been a link change.
- */
- macb_set_tx_clk(bp->tx_clk, phydev->speed, dev);
+static void gem_mac_link_up(struct phylink_config *pl_config, unsigned int mode,
+ phy_interface_t interface, struct phy_device *phy)
+{
+ struct net_device *netdev = to_net_dev(pl_config->dev);
+ struct macb *bp = netdev_priv(netdev);
- netif_carrier_on(dev);
- netdev_info(dev, "link up (%d/%s)\n",
- phydev->speed,
- phydev->duplex == DUPLEX_FULL ?
- "Full" : "Half");
- } else {
- netif_carrier_off(dev);
- netdev_info(dev, "link down\n");
- }
- }
+ bp->link = 1;
+ /* Enable TX and RX */
+ macb_writel(bp, NCR, macb_readl(bp, NCR) | MACB_BIT(RE) | MACB_BIT(TE));
+}
+
+static void gem_mac_link_down(struct phylink_config *pl_config,
+ unsigned int mode, phy_interface_t interface)
+{
+ struct net_device *netdev = to_net_dev(pl_config->dev);
+ struct macb *bp = netdev_priv(netdev);
+
+ bp->link = 0;
+ /* Disable TX and RX */
+ macb_writel(bp, NCR,
+ macb_readl(bp, NCR) & ~(MACB_BIT(RE) | MACB_BIT(TE)));
}
+static const struct phylink_mac_ops gem_phylink_ops = {
+ .validate = gem_phylink_validate,
+ .mac_link_state = gem_phylink_mac_link_state,
+ .mac_config = gem_mac_config,
+ .mac_link_up = gem_mac_link_up,
+ .mac_link_down = gem_mac_link_down,
+};
+
/* based on au1000_eth. c*/
static int macb_mii_probe(struct net_device *dev)
{
struct macb *bp = netdev_priv(dev);
struct phy_device *phydev;
struct device_node *np;
- int ret, i;
+ int ret;
np = bp->pdev->dev.of_node;
ret = 0;
- if (np) {
- if (of_phy_is_fixed_link(np)) {
- bp->phy_node = of_node_get(np);
- } else {
- bp->phy_node = of_parse_phandle(np, "phy-handle", 0);
- /* fallback to standard phy registration if no
- * phy-handle was found nor any phy found during
- * dt phy registration
- */
- if (!bp->phy_node && !phy_find_first(bp->mii_bus)) {
- for (i = 0; i < PHY_MAX_ADDR; i++) {
- phydev = mdiobus_scan(bp->mii_bus, i);
- if (IS_ERR(phydev) &&
- PTR_ERR(phydev) != -ENODEV) {
- ret = PTR_ERR(phydev);
- break;
- }
- }
-
- if (ret)
- return -ENODEV;
- }
- }
+ bp->pl_config.dev = &dev->dev;
+ bp->pl_config.type = PHYLINK_NETDEV;
+ bp->pl = phylink_create(&bp->pl_config, of_fwnode_handle(np),
+ bp->phy_interface, &gem_phylink_ops);
+ if (IS_ERR(bp->pl)) {
+ netdev_err(dev,
+ "error creating PHYLINK: %ld\n", PTR_ERR(bp->pl));
+ return PTR_ERR(bp->pl);
}
- if (bp->phy_node) {
- phydev = of_phy_connect(dev, bp->phy_node,
- &macb_handle_link_change, 0,
- bp->phy_interface);
- if (!phydev)
- return -ENODEV;
- } else {
+ ret = phylink_of_phy_connect(bp->pl, np, 0);
+ if (ret == -ENODEV && bp->mii_bus) {
phydev = phy_find_first(bp->mii_bus);
if (!phydev) {
netdev_err(dev, "no PHY found\n");
@@ -544,29 +576,18 @@ static int macb_mii_probe(struct net_device *dev)
}
/* attach the mac to the phy */
- ret = phy_connect_direct(dev, phydev, &macb_handle_link_change,
- bp->phy_interface);
+ ret = phylink_connect_phy(bp->pl, phydev);
if (ret) {
netdev_err(dev, "Could not attach to PHY\n");
return ret;
}
}
- /* mask with MAC supported features */
- if (macb_is_gem(bp) && bp->caps & MACB_CAPS_GIGABIT_MODE_AVAILABLE)
- phy_set_max_speed(phydev, SPEED_1000);
- else
- phy_set_max_speed(phydev, SPEED_100);
-
- if (bp->caps & MACB_CAPS_NO_GIGABIT_HALF)
- phy_remove_link_mode(phydev,
- ETHTOOL_LINK_MODE_1000baseT_Half_BIT);
-
bp->link = 0;
bp->speed = 0;
bp->duplex = -1;
- return 0;
+ return ret;
}
static int macb_mii_init(struct macb *bp)
@@ -2412,7 +2433,7 @@ static int macb_open(struct net_device *dev)
netif_carrier_off(dev);
/* if the phy is not yet register, retry later*/
- if (!dev->phydev) {
+ if (!bp->pl) {
err = -EAGAIN;
goto pm_exit;
}
@@ -2434,7 +2455,7 @@ static int macb_open(struct net_device *dev)
macb_init_hw(bp);
/* schedule a link state check */
- phy_start(dev->phydev);
+ phylink_start(bp->pl);
netif_tx_start_all_queues(dev);
@@ -2461,8 +2482,8 @@ static int macb_close(struct net_device *dev)
for (q = 0, queue = bp->queues; q < bp->num_queues; ++q, ++queue)
napi_disable(&queue->napi);
- if (dev->phydev)
- phy_stop(dev->phydev);
+ if (bp->pl)
+ phylink_stop(bp->pl);
spin_lock_irqsave(&bp->lock, flags);
macb_reset_hw(bp);
@@ -3151,6 +3172,29 @@ static int gem_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd)
return ret;
}
+static int gem_ethtool_get_link_ksettings(struct net_device *netdev,
+ struct ethtool_link_ksettings *cmd)
+{
+ struct macb *bp = netdev_priv(netdev);
+
+ if (!bp->pl)
+ return -ENOTSUPP;
+
+ return phylink_ethtool_ksettings_get(bp->pl, cmd);
+}
+
+static int
+gem_ethtool_set_link_ksettings(struct net_device *netdev,
+ const struct ethtool_link_ksettings *cmd)
+{
+ struct macb *bp = netdev_priv(netdev);
+
+ if (!bp->pl)
+ return -ENOTSUPP;
+
+ return phylink_ethtool_ksettings_set(bp->pl, cmd);
+}
+
static const struct ethtool_ops macb_ethtool_ops = {
.get_regs_len = macb_get_regs_len,
.get_regs = macb_get_regs,
@@ -3158,8 +3202,8 @@ static const struct ethtool_ops macb_ethtool_ops = {
.get_ts_info = ethtool_op_get_ts_info,
.get_wol = macb_get_wol,
.set_wol = macb_set_wol,
- .get_link_ksettings = phy_ethtool_get_link_ksettings,
- .set_link_ksettings = phy_ethtool_set_link_ksettings,
+ .get_link_ksettings = gem_ethtool_get_link_ksettings,
+ .set_link_ksettings = gem_ethtool_set_link_ksettings,
.get_ringparam = macb_get_ringparam,
.set_ringparam = macb_set_ringparam,
};
@@ -3172,8 +3216,8 @@ static const struct ethtool_ops gem_ethtool_ops = {
.get_ethtool_stats = gem_get_ethtool_stats,
.get_strings = gem_get_ethtool_strings,
.get_sset_count = gem_get_sset_count,
- .get_link_ksettings = phy_ethtool_get_link_ksettings,
- .set_link_ksettings = phy_ethtool_set_link_ksettings,
+ .get_link_ksettings = gem_ethtool_get_link_ksettings,
+ .set_link_ksettings = gem_ethtool_set_link_ksettings,
.get_ringparam = macb_get_ringparam,
.set_ringparam = macb_set_ringparam,
.get_rxnfc = gem_get_rxnfc,
@@ -3182,17 +3226,16 @@ static const struct ethtool_ops gem_ethtool_ops = {
static int macb_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
{
- struct phy_device *phydev = dev->phydev;
struct macb *bp = netdev_priv(dev);
if (!netif_running(dev))
return -EINVAL;
- if (!phydev)
+ if (!bp->pl)
return -ENODEV;
if (!bp->ptp_info)
- return phy_mii_ioctl(phydev, rq, cmd);
+ return phylink_mii_ioctl(bp->pl, rq, cmd);
switch (cmd) {
case SIOCSHWTSTAMP:
@@ -3200,7 +3243,7 @@ static int macb_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
case SIOCGHWTSTAMP:
return bp->ptp_info->get_hwtst(dev, rq);
default:
- return phy_mii_ioctl(phydev, rq, cmd);
+ return phylink_mii_ioctl(bp->pl, rq, cmd);
}
}
@@ -3700,7 +3743,7 @@ static int at91ether_open(struct net_device *dev)
MACB_BIT(HRESP));
/* schedule a link state check */
- phy_start(dev->phydev);
+ phylink_start(lp->pl);
netif_start_queue(dev);
@@ -4062,7 +4105,6 @@ static int macb_probe(struct platform_device *pdev)
struct clk *tsu_clk = NULL;
unsigned int queue_mask, num_queues;
bool native_io;
- struct phy_device *phydev;
struct net_device *dev;
struct resource *regs;
void __iomem *mem;
@@ -4205,8 +4247,6 @@ static int macb_probe(struct platform_device *pdev)
if (err)
goto err_out_free_netdev;
- phydev = dev->phydev;
-
netif_carrier_off(dev);
err = register_netdev(dev);
@@ -4217,8 +4257,8 @@ static int macb_probe(struct platform_device *pdev)
tasklet_init(&bp->hresp_err_tasklet, macb_hresp_error_task,
(unsigned long)bp);
-
- phy_attached_info(phydev);
+ if (dev->phydev)
+ phy_attached_info(dev->phydev);
netdev_info(dev, "Cadence %s rev 0x%08x at 0x%08lx irq %d (%pM)\n",
macb_is_gem(bp) ? "GEM" : "MACB", macb_readl(bp, MID),
@@ -4230,7 +4270,9 @@ static int macb_probe(struct platform_device *pdev)
return 0;
err_out_unregister_mdio:
- phy_disconnect(dev->phydev);
+ rtnl_lock();
+ phylink_disconnect_phy(bp->pl);
+ rtnl_unlock();
mdiobus_unregister(bp->mii_bus);
of_node_put(bp->phy_node);
if (np && of_phy_is_fixed_link(np))
@@ -4263,13 +4305,18 @@ static int macb_remove(struct platform_device *pdev)
if (dev) {
bp = netdev_priv(dev);
- if (dev->phydev)
- phy_disconnect(dev->phydev);
+ if (bp->pl) {
+ rtnl_lock();
+ phylink_disconnect_phy(bp->pl);
+ rtnl_unlock();
+ }
mdiobus_unregister(bp->mii_bus);
if (np && of_phy_is_fixed_link(np))
of_phy_deregister_fixed_link(np);
dev->phydev = NULL;
mdiobus_free(bp->mii_bus);
+ if (bp->pl)
+ phylink_destroy(bp->pl);
unregister_netdev(dev);
pm_runtime_disable(&pdev->dev);
@@ -4311,8 +4358,9 @@ static int __maybe_unused macb_suspend(struct device *dev)
for (q = 0, queue = bp->queues; q < bp->num_queues;
++q, ++queue)
napi_disable(&queue->napi);
- phy_stop(netdev->phydev);
- phy_suspend(netdev->phydev);
+ phylink_stop(bp->pl);
+ if (netdev->phydev)
+ phy_suspend(netdev->phydev);
spin_lock_irqsave(&bp->lock, flags);
macb_reset_hw(bp);
spin_unlock_irqrestore(&bp->lock, flags);
@@ -4360,9 +4408,11 @@ static int __maybe_unused macb_resume(struct device *dev)
for (q = 0, queue = bp->queues; q < bp->num_queues;
++q, ++queue)
napi_enable(&queue->napi);
- phy_resume(netdev->phydev);
- phy_init_hw(netdev->phydev);
- phy_start(netdev->phydev);
+ if (netdev->phydev) {
+ phy_resume(netdev->phydev);
+ phy_init_hw(netdev->phydev);
+ }
+ phylink_start(bp->pl);
}
bp->macbgem_ops.mog_init_rings(bp);
--
2.17.1
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