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Date: Tue, 3 Jun 2008 13:02:53 +0200
From: Lennert Buytenhek <buytenh@...tstofly.org>
To: Dale Farnsworth <dale@...nsworth.org>
Cc: netdev@...r.kernel.org
Subject: [PATCH 38/39] mv643xx_eth: add PHY-less mode
On some boards, the mv643xx_eth MAC isn't connected to a PHY but
directly (via the MII/GMII/RGMII interface) to another MAC-layer
device. This patch allows specifying ->phy_addr = -1 to skip all
PHY-related initialisation and run-time poking in that case.
Signed-off-by: Lennert Buytenhek <buytenh@...vell.com>
---
drivers/net/mv643xx_eth.c | 87 ++++++++++++++++++++++++++++++++++++++-------
1 files changed, 74 insertions(+), 13 deletions(-)
diff --git a/drivers/net/mv643xx_eth.c b/drivers/net/mv643xx_eth.c
index 54c9c76..4b6c810 100644
--- a/drivers/net/mv643xx_eth.c
+++ b/drivers/net/mv643xx_eth.c
@@ -1092,6 +1092,22 @@ static int mv643xx_eth_get_settings(struct net_device *dev, struct ethtool_cmd *
return err;
}
+static int mv643xx_eth_get_settings_phyless(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ cmd->supported = SUPPORTED_MII;
+ cmd->advertising = ADVERTISED_MII;
+ cmd->speed = SPEED_1000;
+ cmd->duplex = DUPLEX_FULL;
+ cmd->port = PORT_MII;
+ cmd->phy_address = 0;
+ cmd->transceiver = XCVR_INTERNAL;
+ cmd->autoneg = AUTONEG_DISABLE;
+ cmd->maxtxpkt = 1;
+ cmd->maxrxpkt = 1;
+
+ return 0;
+}
+
static int mv643xx_eth_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
struct mv643xx_eth_private *mep = netdev_priv(dev);
@@ -1109,6 +1125,11 @@ static int mv643xx_eth_set_settings(struct net_device *dev, struct ethtool_cmd *
return err;
}
+static int mv643xx_eth_set_settings_phyless(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ return -EINVAL;
+}
+
static void mv643xx_eth_get_drvinfo(struct net_device *dev,
struct ethtool_drvinfo *drvinfo)
{
@@ -1126,12 +1147,22 @@ static int mv643xx_eth_nway_reset(struct net_device *dev)
return mii_nway_restart(&mep->mii);
}
+static int mv643xx_eth_nway_reset_phyless(struct net_device *dev)
+{
+ return -EINVAL;
+}
+
static u32 mv643xx_eth_get_link(struct net_device *dev)
{
struct mv643xx_eth_private *mep = netdev_priv(dev);
return mii_link_ok(&mep->mii);
}
+static u32 mv643xx_eth_get_link_phyless(struct net_device *dev)
+{
+ return 1;
+}
+
static void mv643xx_eth_get_strings(struct net_device *dev,
uint32_t stringset, uint8_t *data)
{
@@ -1191,6 +1222,18 @@ static const struct ethtool_ops mv643xx_eth_ethtool_ops = {
.get_sset_count = mv643xx_eth_get_sset_count,
};
+static const struct ethtool_ops mv643xx_eth_ethtool_ops_phyless = {
+ .get_settings = mv643xx_eth_get_settings_phyless,
+ .set_settings = mv643xx_eth_set_settings_phyless,
+ .get_drvinfo = mv643xx_eth_get_drvinfo,
+ .nway_reset = mv643xx_eth_nway_reset_phyless,
+ .get_link = mv643xx_eth_get_link_phyless,
+ .set_sg = ethtool_op_set_sg,
+ .get_strings = mv643xx_eth_get_strings,
+ .get_ethtool_stats = mv643xx_eth_get_ethtool_stats,
+ .get_sset_count = mv643xx_eth_get_sset_count,
+};
+
/* address handling *********************************************************/
static void uc_addr_get(struct mv643xx_eth_private *mep, unsigned char *addr)
@@ -1637,12 +1680,16 @@ static irqreturn_t mv643xx_eth_irq(int irq, void *dev_id)
}
if (int_cause_ext & (INT_EXT_PHY | INT_EXT_LINK)) {
- if (mii_link_ok(&mep->mii)) {
- struct ethtool_cmd cmd;
+ if (mep->phy_addr == -1 || mii_link_ok(&mep->mii)) {
int i;
- mii_ethtool_gset(&mep->mii, &cmd);
- update_pscr(mep, cmd.speed, cmd.duplex);
+ if (mep->phy_addr != -1) {
+ struct ethtool_cmd cmd;
+
+ mii_ethtool_gset(&mep->mii, &cmd);
+ update_pscr(mep, cmd.speed, cmd.duplex);
+ }
+
for (i = 0; i < 8; i++)
if (mep->txq_mask & (1 << i))
txq_enable(mep->txq + i);
@@ -1732,7 +1779,6 @@ static void phy_reset(struct mv643xx_eth_private *mep)
static void port_start(struct mv643xx_eth_private *mep)
{
u32 pscr;
- struct ethtool_cmd ethtool_cmd;
int i;
/*
@@ -1752,9 +1798,16 @@ static void port_start(struct mv643xx_eth_private *mep)
wrl(mep, SDMA_CONFIG(mep->port_num), PORT_SDMA_CONFIG_DEFAULT_VALUE);
- mv643xx_eth_get_settings(mep->dev, ðtool_cmd);
- phy_reset(mep);
- mv643xx_eth_set_settings(mep->dev, ðtool_cmd);
+ /*
+ * Perform PHY reset, if there is a PHY.
+ */
+ if (mep->phy_addr != -1) {
+ struct ethtool_cmd cmd;
+
+ mv643xx_eth_get_settings(mep->dev, &cmd);
+ phy_reset(mep);
+ mv643xx_eth_set_settings(mep->dev, &cmd);
+ }
/*
* Configure TX path and queues.
@@ -1971,7 +2024,10 @@ static int mv643xx_eth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
{
struct mv643xx_eth_private *mep = netdev_priv(dev);
- return generic_mii_ioctl(&mep->mii, if_mii(ifr), cmd, NULL);
+ if (mep->phy_addr != -1)
+ return generic_mii_ioctl(&mep->mii, if_mii(ifr), cmd, NULL);
+
+ return -EOPNOTSUPP;
}
static int mv643xx_eth_change_mtu(struct net_device *dev, int new_mtu)
@@ -2368,10 +2424,15 @@ static int mv643xx_eth_probe(struct platform_device *pdev)
mib_counters_clear(mep);
INIT_WORK(&mep->tx_timeout_task, tx_timeout_task);
- err = phy_init(mep, pd);
- if (err)
- goto out;
- SET_ETHTOOL_OPS(dev, &mv643xx_eth_ethtool_ops);
+ if (mep->phy_addr != -1) {
+ err = phy_init(mep, pd);
+ if (err)
+ goto out;
+
+ SET_ETHTOOL_OPS(dev, &mv643xx_eth_ethtool_ops);
+ } else {
+ SET_ETHTOOL_OPS(dev, &mv643xx_eth_ethtool_ops_phyless);
+ }
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
--
1.5.3.4
--
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