#include <linux/hardirq.h>
#include <linux/delay.h>
#include <linux/of_device.h>
+#include <linux/of_mdio.h>
#include <linux/of_platform.h>
#include <linux/netdevice.h>
#define DRIVER_NAME "mpc52xx-fec"
+/* Private driver data structure */
+struct mpc52xx_fec_priv {
+ struct net_device *ndev;
+ int duplex;
+ int speed;
+ int r_irq;
+ int t_irq;
+ struct mpc52xx_fec __iomem *fec;
+ struct bcom_task *rx_dmatsk;
+ struct bcom_task *tx_dmatsk;
+ spinlock_t lock;
+ int msg_enable;
+
+ /* MDIO link details */
+ unsigned int mdio_speed;
+ struct device_node *phy_node;
+ struct phy_device *phydev;
+ enum phy_state link;
+ int seven_wire_mode;
+};
+
+
static irqreturn_t mpc52xx_fec_interrupt(int, void *);
static irqreturn_t mpc52xx_fec_rx_interrupt(int, void *);
static irqreturn_t mpc52xx_fec_tx_interrupt(int, void *);
MODULE_PARM_DESC(mac, "six hex digits, ie. 0x1,0x2,0xc0,0x01,0xba,0xbe");
#define MPC52xx_MESSAGES_DEFAULT ( NETIF_MSG_DRV | NETIF_MSG_PROBE | \
- NETIF_MSG_LINK | NETIF_MSG_IFDOWN | NETIF_MSG_IFDOWN )
+ NETIF_MSG_LINK | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP)
static int debug = -1; /* the above default */
module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "debugging messages level");
struct sk_buff *skb;
skb = bcom_retrieve_buffer(s, NULL, (struct bcom_bd **)&bd);
- dma_unmap_single(&dev->dev, bd->skb_pa, skb->len, DMA_FROM_DEVICE);
+ dma_unmap_single(dev->dev.parent, bd->skb_pa, skb->len,
+ DMA_FROM_DEVICE);
kfree_skb(skb);
}
}
bd = (struct bcom_fec_bd *)bcom_prepare_next_buffer(rxtsk);
bd->status = FEC_RX_BUFFER_SIZE;
- bd->skb_pa = dma_map_single(&dev->dev, skb->data,
+ bd->skb_pa = dma_map_single(dev->dev.parent, skb->data,
FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
bcom_submit_next_buffer(rxtsk, skb);
if (priv->link == PHY_DOWN) {
new_state = 1;
priv->link = phydev->link;
- netif_schedule(dev);
- netif_carrier_on(dev);
- netif_start_queue(dev);
}
} else if (priv->link) {
priv->link = PHY_DOWN;
priv->speed = 0;
priv->duplex = -1;
- netif_stop_queue(dev);
- netif_carrier_off(dev);
}
if (new_state && netif_msg_link(priv))
phy_print_status(phydev);
}
-static int mpc52xx_fec_init_phy(struct net_device *dev)
-{
- struct mpc52xx_fec_priv *priv = netdev_priv(dev);
- struct phy_device *phydev;
- char phy_id[BUS_ID_SIZE];
-
- snprintf(phy_id, BUS_ID_SIZE, PHY_ID_FMT,
- (unsigned int)dev->base_addr, priv->phy_addr);
-
- priv->link = PHY_DOWN;
- priv->speed = 0;
- priv->duplex = -1;
-
- phydev = phy_connect(dev, phy_id, &mpc52xx_fec_adjust_link, 0, PHY_INTERFACE_MODE_MII);
- if (IS_ERR(phydev)) {
- dev_err(&dev->dev, "phy_connect failed\n");
- return PTR_ERR(phydev);
- }
- dev_info(&dev->dev, "attached phy %i to driver %s\n",
- phydev->addr, phydev->drv->name);
-
- priv->phydev = phydev;
-
- return 0;
-}
-
-static int mpc52xx_fec_phy_start(struct net_device *dev)
-{
- struct mpc52xx_fec_priv *priv = netdev_priv(dev);
- int err;
-
- if (!priv->has_phy)
- return 0;
-
- err = mpc52xx_fec_init_phy(dev);
- if (err) {
- dev_err(&dev->dev, "mpc52xx_fec_init_phy failed\n");
- return err;
- }
-
- /* reset phy - this also wakes it from PDOWN */
- phy_write(priv->phydev, MII_BMCR, BMCR_RESET);
- phy_start(priv->phydev);
-
- return 0;
-}
-
-static void mpc52xx_fec_phy_stop(struct net_device *dev)
-{
- struct mpc52xx_fec_priv *priv = netdev_priv(dev);
-
- if (!priv->has_phy)
- return;
-
- phy_disconnect(priv->phydev);
- /* power down phy */
- phy_stop(priv->phydev);
- phy_write(priv->phydev, MII_BMCR, BMCR_PDOWN);
-}
-
-static int mpc52xx_fec_phy_mii_ioctl(struct mpc52xx_fec_priv *priv,
- struct mii_ioctl_data *mii_data, int cmd)
-{
- if (!priv->has_phy)
- return -ENOTSUPP;
-
- return phy_mii_ioctl(priv->phydev, mii_data, cmd);
-}
-
-static void mpc52xx_fec_phy_hw_init(struct mpc52xx_fec_priv *priv)
-{
- struct mpc52xx_fec __iomem *fec = priv->fec;
-
- if (!priv->has_phy)
- return;
-
- out_be32(&fec->mii_speed, priv->phy_speed);
-}
-
static int mpc52xx_fec_open(struct net_device *dev)
{
struct mpc52xx_fec_priv *priv = netdev_priv(dev);
int err = -EBUSY;
+ if (priv->phy_node) {
+ priv->phydev = of_phy_connect(priv->ndev, priv->phy_node,
+ mpc52xx_fec_adjust_link, 0, 0);
+ if (!priv->phydev) {
+ dev_err(&dev->dev, "of_phy_connect failed\n");
+ return -ENODEV;
+ }
+ phy_start(priv->phydev);
+ }
+
if (request_irq(dev->irq, &mpc52xx_fec_interrupt, IRQF_SHARED,
DRIVER_NAME "_ctrl", dev)) {
dev_err(&dev->dev, "ctrl interrupt request failed\n");
- goto out;
+ goto free_phy;
}
if (request_irq(priv->r_irq, &mpc52xx_fec_rx_interrupt, 0,
DRIVER_NAME "_rx", dev)) {
goto free_irqs;
}
- err = mpc52xx_fec_phy_start(dev);
- if (err)
- goto free_skbs;
-
bcom_enable(priv->rx_dmatsk);
bcom_enable(priv->tx_dmatsk);
return 0;
- free_skbs:
- mpc52xx_fec_free_rx_buffers(dev, priv->rx_dmatsk);
-
free_irqs:
free_irq(priv->t_irq, dev);
free_2irqs:
free_irq(priv->r_irq, dev);
free_ctrl_irq:
free_irq(dev->irq, dev);
- out:
+ free_phy:
+ if (priv->phydev) {
+ phy_stop(priv->phydev);
+ phy_disconnect(priv->phydev);
+ priv->phydev = NULL;
+ }
return err;
}
free_irq(priv->r_irq, dev);
free_irq(priv->t_irq, dev);
- mpc52xx_fec_phy_stop(dev);
+ if (priv->phydev) {
+ /* power down phy */
+ phy_stop(priv->phydev);
+ phy_disconnect(priv->phydev);
+ priv->phydev = NULL;
+ }
return 0;
}
* invariant will hold if you make sure that the netif_*_queue()
* calls are done at the proper times.
*/
-static int mpc52xx_fec_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
+static int mpc52xx_fec_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct mpc52xx_fec_priv *priv = netdev_priv(dev);
struct bcom_fec_bd *bd;
+ unsigned long flags;
if (bcom_queue_full(priv->tx_dmatsk)) {
if (net_ratelimit())
dev_err(&dev->dev, "transmit queue overrun\n");
- return 1;
+ return NETDEV_TX_BUSY;
}
- spin_lock_irq(&priv->lock);
+ spin_lock_irqsave(&priv->lock, flags);
dev->trans_start = jiffies;
bd = (struct bcom_fec_bd *)
bcom_prepare_next_buffer(priv->tx_dmatsk);
bd->status = skb->len | BCOM_FEC_TX_BD_TFD | BCOM_FEC_TX_BD_TC;
- bd->skb_pa = dma_map_single(&dev->dev, skb->data, skb->len, DMA_TO_DEVICE);
+ bd->skb_pa = dma_map_single(dev->dev.parent, skb->data, skb->len,
+ DMA_TO_DEVICE);
bcom_submit_next_buffer(priv->tx_dmatsk, skb);
netif_stop_queue(dev);
}
- spin_unlock_irq(&priv->lock);
+ spin_unlock_irqrestore(&priv->lock, flags);
- return 0;
+ return NETDEV_TX_OK;
}
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void mpc52xx_fec_poll_controller(struct net_device *dev)
+{
+ struct mpc52xx_fec_priv *priv = netdev_priv(dev);
+
+ disable_irq(priv->t_irq);
+ mpc52xx_fec_tx_interrupt(priv->t_irq, dev);
+ enable_irq(priv->t_irq);
+ disable_irq(priv->r_irq);
+ mpc52xx_fec_rx_interrupt(priv->r_irq, dev);
+ enable_irq(priv->r_irq);
+}
+#endif
+
+
/* This handles BestComm transmit task interrupts
*/
static irqreturn_t mpc52xx_fec_tx_interrupt(int irq, void *dev_id)
struct bcom_fec_bd *bd;
skb = bcom_retrieve_buffer(priv->tx_dmatsk, NULL,
(struct bcom_bd **)&bd);
- dma_unmap_single(&dev->dev, bd->skb_pa, skb->len, DMA_TO_DEVICE);
+ dma_unmap_single(dev->dev.parent, bd->skb_pa, skb->len,
+ DMA_TO_DEVICE);
dev_kfree_skb_irq(skb);
}
rskb = bcom_retrieve_buffer(priv->rx_dmatsk, &status,
(struct bcom_bd **)&bd);
- dma_unmap_single(&dev->dev, bd->skb_pa, skb->len, DMA_FROM_DEVICE);
+ dma_unmap_single(dev->dev.parent, bd->skb_pa, rskb->len,
+ DMA_FROM_DEVICE);
/* Test for errors in received frame */
if (status & BCOM_FEC_RX_BD_ERRORS) {
bcom_prepare_next_buffer(priv->rx_dmatsk);
bd->status = FEC_RX_BUFFER_SIZE;
- bd->skb_pa = dma_map_single(&dev->dev, rskb->data,
+ bd->skb_pa = dma_map_single(dev->dev.parent,
+ rskb->data,
FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
bcom_submit_next_buffer(priv->rx_dmatsk, rskb);
rskb->protocol = eth_type_trans(rskb, dev);
netif_rx(rskb);
- dev->last_rx = jiffies;
} else {
/* Can't get a new one : reuse the same & drop pkt */
dev_notice(&dev->dev, "Memory squeeze, dropping packet.\n");
bcom_prepare_next_buffer(priv->rx_dmatsk);
bd->status = FEC_RX_BUFFER_SIZE;
- bd->skb_pa = dma_map_single(&dev->dev, rskb->data,
+ bd->skb_pa = dma_map_single(dev->dev.parent, skb->data,
FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
bcom_submit_next_buffer(priv->rx_dmatsk, skb);
out_be32(&fec->ievent, ievent); /* clear pending events */
- if (ievent & ~(FEC_IEVENT_RFIFO_ERROR | FEC_IEVENT_XFIFO_ERROR)) {
- if (ievent & ~FEC_IEVENT_TFINT)
- dev_dbg(&dev->dev, "ievent: %08x\n", ievent);
+ /* on fifo error, soft-reset fec */
+ if (ievent & (FEC_IEVENT_RFIFO_ERROR | FEC_IEVENT_XFIFO_ERROR)) {
+
+ if (net_ratelimit() && (ievent & FEC_IEVENT_RFIFO_ERROR))
+ dev_warn(&dev->dev, "FEC_IEVENT_RFIFO_ERROR\n");
+ if (net_ratelimit() && (ievent & FEC_IEVENT_XFIFO_ERROR))
+ dev_warn(&dev->dev, "FEC_IEVENT_XFIFO_ERROR\n");
+
+ mpc52xx_fec_reset(dev);
+
+ netif_wake_queue(dev);
return IRQ_HANDLED;
}
- if (net_ratelimit() && (ievent & FEC_IEVENT_RFIFO_ERROR))
- dev_warn(&dev->dev, "FEC_IEVENT_RFIFO_ERROR\n");
- if (net_ratelimit() && (ievent & FEC_IEVENT_XFIFO_ERROR))
- dev_warn(&dev->dev, "FEC_IEVENT_XFIFO_ERROR\n");
+ if (ievent & ~FEC_IEVENT_TFINT)
+ dev_dbg(&dev->dev, "ievent: %08x\n", ievent);
- mpc52xx_fec_reset(dev);
-
- netif_wake_queue(dev);
return IRQ_HANDLED;
}
struct mpc52xx_fec __iomem *fec = priv->fec;
out_be32(&fec->mib_control, FEC_MIB_DISABLE);
- memset_io(&fec->rmon_t_drop, 0, (__force u32)&fec->reserved10 -
- (__force u32)&fec->rmon_t_drop);
+ memset_io(&fec->rmon_t_drop, 0,
+ offsetof(struct mpc52xx_fec, reserved10) -
+ offsetof(struct mpc52xx_fec, rmon_t_drop));
out_be32(&fec->mib_control, 0);
memset(&dev->stats, 0, sizeof(dev->stats));
/* set phy speed.
* this can't be done in phy driver, since it needs to be called
* before fec stuff (even on resume) */
- mpc52xx_fec_phy_hw_init(priv);
+ out_be32(&fec->mii_speed, priv->mdio_speed);
}
/**
rcntrl = FEC_RX_BUFFER_SIZE << 16; /* max frame length */
rcntrl |= FEC_RCNTRL_FCE;
- if (priv->has_phy)
+ if (!priv->seven_wire_mode)
rcntrl |= FEC_RCNTRL_MII_MODE;
if (priv->duplex == DUPLEX_FULL)
/* Stop FEC */
out_be32(&fec->ecntrl, in_be32(&fec->ecntrl) & ~FEC_ECNTRL_ETHER_EN);
-
- return;
}
/* reset fec and bestcomm tasks */
mpc52xx_fec_hw_init(dev);
- phy_stop(priv->phydev);
- phy_write(priv->phydev, MII_BMCR, BMCR_RESET);
- phy_start(priv->phydev);
-
bcom_fec_rx_reset(priv->rx_dmatsk);
bcom_fec_tx_reset(priv->tx_dmatsk);
static int mpc52xx_fec_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
struct mpc52xx_fec_priv *priv = netdev_priv(dev);
+
+ if (!priv->phydev)
+ return -ENODEV;
+
return phy_ethtool_gset(priv->phydev, cmd);
}
static int mpc52xx_fec_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
struct mpc52xx_fec_priv *priv = netdev_priv(dev);
+
+ if (!priv->phydev)
+ return -ENODEV;
+
return phy_ethtool_sset(priv->phydev, cmd);
}
{
struct mpc52xx_fec_priv *priv = netdev_priv(dev);
- return mpc52xx_fec_phy_mii_ioctl(priv, if_mii(rq), cmd);
+ if (!priv->phydev)
+ return -ENOTSUPP;
+
+ return phy_mii_ioctl(priv->phydev, if_mii(rq), cmd);
}
+static const struct net_device_ops mpc52xx_fec_netdev_ops = {
+ .ndo_open = mpc52xx_fec_open,
+ .ndo_stop = mpc52xx_fec_close,
+ .ndo_start_xmit = mpc52xx_fec_start_xmit,
+ .ndo_set_multicast_list = mpc52xx_fec_set_multicast_list,
+ .ndo_set_mac_address = mpc52xx_fec_set_mac_address,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_do_ioctl = mpc52xx_fec_ioctl,
+ .ndo_change_mtu = eth_change_mtu,
+ .ndo_tx_timeout = mpc52xx_fec_tx_timeout,
+ .ndo_get_stats = mpc52xx_fec_get_stats,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = mpc52xx_fec_poll_controller,
+#endif
+};
+
/* ======================================================================== */
/* OF Driver */
/* ======================================================================== */
struct net_device *ndev;
struct mpc52xx_fec_priv *priv = NULL;
struct resource mem;
- const phandle *ph;
+ const u32 *prop;
+ int prop_size;
phys_addr_t rx_fifo;
phys_addr_t tx_fifo;
return -ENOMEM;
priv = netdev_priv(ndev);
+ priv->ndev = ndev;
/* Reserve FEC control zone */
rv = of_address_to_resource(op->node, 0, &mem);
"Error while parsing device node resource\n" );
return rv;
}
- if ((mem.end - mem.start + 1) != sizeof(struct mpc52xx_fec)) {
+ if ((mem.end - mem.start + 1) < sizeof(struct mpc52xx_fec)) {
printk(KERN_ERR DRIVER_NAME
- " - invalid resource size (%lx != %x), check mpc52xx_devices.c\n",
+ " - invalid resource size (%lx < %x), check mpc52xx_devices.c\n",
(unsigned long)(mem.end - mem.start + 1), sizeof(struct mpc52xx_fec));
return -EINVAL;
}
return -EBUSY;
/* Init ether ndev with what we have */
- ndev->open = mpc52xx_fec_open;
- ndev->stop = mpc52xx_fec_close;
- ndev->hard_start_xmit = mpc52xx_fec_hard_start_xmit;
- ndev->do_ioctl = mpc52xx_fec_ioctl;
+ ndev->netdev_ops = &mpc52xx_fec_netdev_ops;
ndev->ethtool_ops = &mpc52xx_fec_ethtool_ops;
- ndev->get_stats = mpc52xx_fec_get_stats;
- ndev->set_mac_address = mpc52xx_fec_set_mac_address;
- ndev->set_multicast_list = mpc52xx_fec_set_multicast_list;
- ndev->tx_timeout = mpc52xx_fec_tx_timeout;
ndev->watchdog_timeo = FEC_WATCHDOG_TIMEOUT;
ndev->base_addr = mem.start;
-
- priv->t_irq = priv->r_irq = ndev->irq = NO_IRQ; /* IRQ are free for now */
+ SET_NETDEV_DEV(ndev, &op->dev);
spin_lock_init(&priv->lock);
mpc52xx_fec_get_paddr(ndev, ndev->dev_addr);
priv->msg_enable = netif_msg_init(debug, MPC52xx_MESSAGES_DEFAULT);
- priv->duplex = DUPLEX_FULL;
- /* is the phy present in device tree? */
- ph = of_get_property(op->node, "phy-handle", NULL);
- if (ph) {
- const unsigned int *prop;
- struct device_node *phy_dn;
- priv->has_phy = 1;
+ /*
+ * Link mode configuration
+ */
+
+ /* Start with safe defaults for link connection */
+ priv->speed = 100;
+ priv->duplex = DUPLEX_HALF;
+ priv->mdio_speed = ((mpc5xxx_get_bus_frequency(op->node) >> 20) / 5) << 1;
- phy_dn = of_find_node_by_phandle(*ph);
- prop = of_get_property(phy_dn, "reg", NULL);
- priv->phy_addr = *prop;
+ /* The current speed preconfigures the speed of the MII link */
+ prop = of_get_property(op->node, "current-speed", &prop_size);
+ if (prop && (prop_size >= sizeof(u32) * 2)) {
+ priv->speed = prop[0];
+ priv->duplex = prop[1] ? DUPLEX_FULL : DUPLEX_HALF;
+ }
- of_node_put(phy_dn);
+ /* If there is a phy handle, then get the PHY node */
+ priv->phy_node = of_parse_phandle(op->node, "phy-handle", 0);
- /* Phy speed */
- priv->phy_speed = ((mpc52xx_find_ipb_freq(op->node) >> 20) / 5) << 1;
- } else {
- dev_info(&ndev->dev, "can't find \"phy-handle\" in device"
- " tree, using 7-wire mode\n");
+ /* the 7-wire property means don't use MII mode */
+ if (of_find_property(op->node, "fsl,7-wire-mode", NULL)) {
+ priv->seven_wire_mode = 1;
+ dev_info(&ndev->dev, "using 7-wire PHY mode\n");
}
/* Hardware init */
mpc52xx_fec_hw_init(ndev);
-
mpc52xx_fec_reset_stats(ndev);
- /* Register the new network device */
rv = register_netdev(ndev);
if (rv < 0)
goto probe_error;
/* Error handling - free everything that might be allocated */
probe_error:
+ if (priv->phy_node)
+ of_node_put(priv->phy_node);
+ priv->phy_node = NULL;
+
irq_dispose_mapping(ndev->irq);
if (priv->rx_dmatsk)
unregister_netdev(ndev);
+ if (priv->phy_node)
+ of_node_put(priv->phy_node);
+ priv->phy_node = NULL;
+
irq_dispose_mapping(ndev->irq);
bcom_fec_rx_release(priv->rx_dmatsk);
#endif
static struct of_device_id mpc52xx_fec_match[] = {
- {
- .type = "network",
- .compatible = "mpc5200-fec",
- },
+ { .compatible = "fsl,mpc5200b-fec", },
+ { .compatible = "fsl,mpc5200-fec", },
+ { .compatible = "mpc5200-fec", },
{ }
};
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff