#include <linux/if_vlan.h>
#include <linux/spinlock.h>
#include <linux/mm.h>
+#include <linux/of_mdio.h>
#include <linux/of_platform.h>
#include <linux/ip.h>
#include <linux/tcp.h>
#include <linux/of.h>
#include "gianfar.h"
-#include "gianfar_mii.h"
+#include "fsl_pq_mdio.h"
#define TX_TIMEOUT (1*HZ)
#undef BRIEF_GFAR_ERRORS
void gfar_start(struct net_device *dev);
static void gfar_clear_exact_match(struct net_device *dev);
static void gfar_set_mac_for_addr(struct net_device *dev, int num, u8 *addr);
-
-extern const struct ethtool_ops gfar_ethtool_ops;
+static int gfar_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
MODULE_AUTHOR("Freescale Semiconductor, Inc");
MODULE_DESCRIPTION("Gianfar Ethernet Driver");
MODULE_LICENSE("GPL");
+static void gfar_init_rxbdp(struct net_device *dev, struct rxbd8 *bdp,
+ dma_addr_t buf)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+ u32 lstatus;
+
+ bdp->bufPtr = buf;
+
+ lstatus = BD_LFLAG(RXBD_EMPTY | RXBD_INTERRUPT);
+ if (bdp == priv->rx_bd_base + priv->rx_ring_size - 1)
+ lstatus |= BD_LFLAG(RXBD_WRAP);
+
+ eieio();
+
+ bdp->lstatus = lstatus;
+}
+
+static int gfar_init_bds(struct net_device *ndev)
+{
+ struct gfar_private *priv = netdev_priv(ndev);
+ struct txbd8 *txbdp;
+ struct rxbd8 *rxbdp;
+ int i;
+
+ /* Initialize some variables in our dev structure */
+ priv->num_txbdfree = priv->tx_ring_size;
+ priv->dirty_tx = priv->cur_tx = priv->tx_bd_base;
+ priv->cur_rx = priv->rx_bd_base;
+ priv->skb_curtx = priv->skb_dirtytx = 0;
+ priv->skb_currx = 0;
+
+ /* Initialize Transmit Descriptor Ring */
+ txbdp = priv->tx_bd_base;
+ for (i = 0; i < priv->tx_ring_size; i++) {
+ txbdp->lstatus = 0;
+ txbdp->bufPtr = 0;
+ txbdp++;
+ }
+
+ /* Set the last descriptor in the ring to indicate wrap */
+ txbdp--;
+ txbdp->status |= TXBD_WRAP;
+
+ rxbdp = priv->rx_bd_base;
+ for (i = 0; i < priv->rx_ring_size; i++) {
+ struct sk_buff *skb = priv->rx_skbuff[i];
+
+ if (skb) {
+ gfar_init_rxbdp(ndev, rxbdp, rxbdp->bufPtr);
+ } else {
+ skb = gfar_new_skb(ndev);
+ if (!skb) {
+ pr_err("%s: Can't allocate RX buffers\n",
+ ndev->name);
+ return -ENOMEM;
+ }
+ priv->rx_skbuff[i] = skb;
+
+ gfar_new_rxbdp(ndev, rxbdp, skb);
+ }
+
+ rxbdp++;
+ }
+
+ return 0;
+}
+
+static int gfar_alloc_skb_resources(struct net_device *ndev)
+{
+ void *vaddr;
+ int i;
+ struct gfar_private *priv = netdev_priv(ndev);
+ struct device *dev = &priv->ofdev->dev;
+
+ /* Allocate memory for the buffer descriptors */
+ vaddr = dma_alloc_coherent(dev,
+ sizeof(*priv->tx_bd_base) * priv->tx_ring_size +
+ sizeof(*priv->rx_bd_base) * priv->rx_ring_size,
+ &priv->tx_bd_dma_base, GFP_KERNEL);
+ if (!vaddr) {
+ if (netif_msg_ifup(priv))
+ pr_err("%s: Could not allocate buffer descriptors!\n",
+ ndev->name);
+ return -ENOMEM;
+ }
+
+ priv->tx_bd_base = vaddr;
+
+ /* Start the rx descriptor ring where the tx ring leaves off */
+ vaddr = vaddr + sizeof(*priv->tx_bd_base) * priv->tx_ring_size;
+ priv->rx_bd_base = vaddr;
+
+ /* Setup the skbuff rings */
+ priv->tx_skbuff = kmalloc(sizeof(*priv->tx_skbuff) *
+ priv->tx_ring_size, GFP_KERNEL);
+ if (!priv->tx_skbuff) {
+ if (netif_msg_ifup(priv))
+ pr_err("%s: Could not allocate tx_skbuff\n",
+ ndev->name);
+ goto cleanup;
+ }
+
+ for (i = 0; i < priv->tx_ring_size; i++)
+ priv->tx_skbuff[i] = NULL;
+
+ priv->rx_skbuff = kmalloc(sizeof(*priv->rx_skbuff) *
+ priv->rx_ring_size, GFP_KERNEL);
+ if (!priv->rx_skbuff) {
+ if (netif_msg_ifup(priv))
+ pr_err("%s: Could not allocate rx_skbuff\n",
+ ndev->name);
+ goto cleanup;
+ }
+
+ for (i = 0; i < priv->rx_ring_size; i++)
+ priv->rx_skbuff[i] = NULL;
+
+ if (gfar_init_bds(ndev))
+ goto cleanup;
+
+ return 0;
+
+cleanup:
+ free_skb_resources(priv);
+ return -ENOMEM;
+}
+
+static void gfar_init_mac(struct net_device *ndev)
+{
+ struct gfar_private *priv = netdev_priv(ndev);
+ struct gfar __iomem *regs = priv->regs;
+ u32 rctrl = 0;
+ u32 tctrl = 0;
+ u32 attrs = 0;
+
+ /* enet DMA only understands physical addresses */
+ gfar_write(®s->tbase0, priv->tx_bd_dma_base);
+ gfar_write(®s->rbase0, priv->tx_bd_dma_base +
+ sizeof(*priv->tx_bd_base) *
+ priv->tx_ring_size);
+
+ /* Configure the coalescing support */
+ gfar_write(®s->txic, 0);
+ if (priv->txcoalescing)
+ gfar_write(®s->txic, priv->txic);
+
+ gfar_write(®s->rxic, 0);
+ if (priv->rxcoalescing)
+ gfar_write(®s->rxic, priv->rxic);
+
+ if (priv->rx_csum_enable)
+ rctrl |= RCTRL_CHECKSUMMING;
+
+ if (priv->extended_hash) {
+ rctrl |= RCTRL_EXTHASH;
+
+ gfar_clear_exact_match(ndev);
+ rctrl |= RCTRL_EMEN;
+ }
+
+ if (priv->padding) {
+ rctrl &= ~RCTRL_PAL_MASK;
+ rctrl |= RCTRL_PADDING(priv->padding);
+ }
+
+ /* keep vlan related bits if it's enabled */
+ if (priv->vlgrp) {
+ rctrl |= RCTRL_VLEX | RCTRL_PRSDEP_INIT;
+ tctrl |= TCTRL_VLINS;
+ }
+
+ /* Init rctrl based on our settings */
+ gfar_write(®s->rctrl, rctrl);
+
+ if (ndev->features & NETIF_F_IP_CSUM)
+ tctrl |= TCTRL_INIT_CSUM;
+
+ gfar_write(®s->tctrl, tctrl);
+
+ /* Set the extraction length and index */
+ attrs = ATTRELI_EL(priv->rx_stash_size) |
+ ATTRELI_EI(priv->rx_stash_index);
+
+ gfar_write(®s->attreli, attrs);
+
+ /* Start with defaults, and add stashing or locking
+ * depending on the approprate variables */
+ attrs = ATTR_INIT_SETTINGS;
+
+ if (priv->bd_stash_en)
+ attrs |= ATTR_BDSTASH;
+
+ if (priv->rx_stash_size != 0)
+ attrs |= ATTR_BUFSTASH;
+
+ gfar_write(®s->attr, attrs);
+
+ gfar_write(®s->fifo_tx_thr, priv->fifo_threshold);
+ gfar_write(®s->fifo_tx_starve, priv->fifo_starve);
+ gfar_write(®s->fifo_tx_starve_shutoff, priv->fifo_starve_off);
+}
+
+static const struct net_device_ops gfar_netdev_ops = {
+ .ndo_open = gfar_enet_open,
+ .ndo_start_xmit = gfar_start_xmit,
+ .ndo_stop = gfar_close,
+ .ndo_change_mtu = gfar_change_mtu,
+ .ndo_set_multicast_list = gfar_set_multi,
+ .ndo_tx_timeout = gfar_timeout,
+ .ndo_do_ioctl = gfar_ioctl,
+ .ndo_vlan_rx_register = gfar_vlan_rx_register,
+ .ndo_set_mac_address = eth_mac_addr,
+ .ndo_validate_addr = eth_validate_addr,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = gfar_netpoll,
+#endif
+};
+
/* Returns 1 if incoming frames use an FCB */
static inline int gfar_uses_fcb(struct gfar_private *priv)
{
static int gfar_of_init(struct net_device *dev)
{
- struct device_node *phy, *mdio;
- const unsigned int *id;
const char *model;
const char *ctype;
const void *mac_addr;
- const phandle *ph;
u64 addr, size;
int err = 0;
struct gfar_private *priv = netdev_priv(dev);
struct device_node *np = priv->node;
- char bus_name[MII_BUS_ID_SIZE];
+ const u32 *stash;
+ const u32 *stash_len;
+ const u32 *stash_idx;
if (!np || !of_device_is_available(np))
return -ENODEV;
}
}
+ stash = of_get_property(np, "bd-stash", NULL);
+
+ if(stash) {
+ priv->device_flags |= FSL_GIANFAR_DEV_HAS_BD_STASHING;
+ priv->bd_stash_en = 1;
+ }
+
+ stash_len = of_get_property(np, "rx-stash-len", NULL);
+
+ if (stash_len)
+ priv->rx_stash_size = *stash_len;
+
+ stash_idx = of_get_property(np, "rx-stash-idx", NULL);
+
+ if (stash_idx)
+ priv->rx_stash_index = *stash_idx;
+
+ if (stash_len || stash_idx)
+ priv->device_flags |= FSL_GIANFAR_DEV_HAS_BUF_STASHING;
+
mac_addr = of_get_mac_address(np);
if (mac_addr)
memcpy(dev->dev_addr, mac_addr, MAC_ADDR_LEN);
if (of_get_property(np, "fsl,magic-packet", NULL))
priv->device_flags |= FSL_GIANFAR_DEV_HAS_MAGIC_PACKET;
- ph = of_get_property(np, "phy-handle", NULL);
- if (ph == NULL) {
- u32 *fixed_link;
-
- fixed_link = (u32 *)of_get_property(np, "fixed-link", NULL);
- if (!fixed_link) {
- err = -ENODEV;
- goto err_out;
- }
-
- snprintf(priv->phy_bus_id, BUS_ID_SIZE, PHY_ID_FMT, "0",
- fixed_link[0]);
- } else {
- phy = of_find_node_by_phandle(*ph);
-
- if (phy == NULL) {
- err = -ENODEV;
- goto err_out;
- }
-
- mdio = of_get_parent(phy);
-
- id = of_get_property(phy, "reg", NULL);
-
- of_node_put(phy);
- of_node_put(mdio);
-
- gfar_mdio_bus_name(bus_name, mdio);
- snprintf(priv->phy_bus_id, BUS_ID_SIZE, "%s:%02x",
- bus_name, *id);
- }
+ priv->phy_node = of_parse_phandle(np, "phy-handle", 0);
/* Find the TBI PHY. If it's not there, we don't support SGMII */
- ph = of_get_property(np, "tbi-handle", NULL);
- if (ph) {
- struct device_node *tbi = of_find_node_by_phandle(*ph);
- struct of_device *ofdev;
- struct mii_bus *bus;
-
- if (!tbi)
- return 0;
-
- mdio = of_get_parent(tbi);
- if (!mdio)
- return 0;
-
- ofdev = of_find_device_by_node(mdio);
-
- of_node_put(mdio);
-
- id = of_get_property(tbi, "reg", NULL);
- if (!id)
- return 0;
-
- of_node_put(tbi);
-
- bus = dev_get_drvdata(&ofdev->dev);
-
- priv->tbiphy = bus->phy_map[*id];
- }
+ priv->tbi_node = of_parse_phandle(np, "tbi-handle", 0);
return 0;
return err;
}
+/* Ioctl MII Interface */
+static int gfar_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+
+ if (!netif_running(dev))
+ return -EINVAL;
+
+ if (!priv->phydev)
+ return -ENODEV;
+
+ return phy_mii_ioctl(priv->phydev, if_mii(rq), cmd);
+}
+
/* Set up the ethernet device structure, private data,
* and anything else we need before we start */
static int gfar_probe(struct of_device *ofdev,
u32 tempval;
struct net_device *dev = NULL;
struct gfar_private *priv = NULL;
- DECLARE_MAC_BUF(mac);
int err = 0;
int len_devname;
return -ENOMEM;
priv = netdev_priv(dev);
- priv->dev = dev;
+ priv->ndev = dev;
+ priv->ofdev = ofdev;
priv->node = ofdev->node;
+ SET_NETDEV_DEV(dev, &ofdev->dev);
err = gfar_of_init(dev);
/* Reset MAC layer */
gfar_write(&priv->regs->maccfg1, MACCFG1_SOFT_RESET);
+ /* We need to delay at least 3 TX clocks */
+ udelay(2);
+
tempval = (MACCFG1_TX_FLOW | MACCFG1_RX_FLOW);
gfar_write(&priv->regs->maccfg1, tempval);
SET_NETDEV_DEV(dev, &ofdev->dev);
/* Fill in the dev structure */
- dev->open = gfar_enet_open;
- dev->hard_start_xmit = gfar_start_xmit;
- dev->tx_timeout = gfar_timeout;
dev->watchdog_timeo = TX_TIMEOUT;
netif_napi_add(dev, &priv->napi, gfar_poll, GFAR_DEV_WEIGHT);
-#ifdef CONFIG_NET_POLL_CONTROLLER
- dev->poll_controller = gfar_netpoll;
-#endif
- dev->stop = gfar_close;
- dev->change_mtu = gfar_change_mtu;
dev->mtu = 1500;
- dev->set_multicast_list = gfar_set_multi;
+ dev->netdev_ops = &gfar_netdev_ops;
dev->ethtool_ops = &gfar_ethtool_ops;
if (priv->device_flags & FSL_GIANFAR_DEV_HAS_CSUM) {
priv->vlgrp = NULL;
- if (priv->device_flags & FSL_GIANFAR_DEV_HAS_VLAN) {
- dev->vlan_rx_register = gfar_vlan_rx_register;
-
+ if (priv->device_flags & FSL_GIANFAR_DEV_HAS_VLAN)
dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
- }
if (priv->device_flags & FSL_GIANFAR_DEV_HAS_EXTENDED_HASH) {
priv->extended_hash = 1;
priv->hash_width = 8;
priv->hash_regs[0] = &priv->regs->gaddr0;
- priv->hash_regs[1] = &priv->regs->gaddr1;
+ priv->hash_regs[1] = &priv->regs->gaddr1;
priv->hash_regs[2] = &priv->regs->gaddr2;
priv->hash_regs[3] = &priv->regs->gaddr3;
priv->hash_regs[4] = &priv->regs->gaddr4;
goto register_fail;
}
+ device_init_wakeup(&dev->dev,
+ priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET);
+
/* fill out IRQ number and name fields */
len_devname = strlen(dev->name);
strncpy(&priv->int_name_tx[0], dev->name, len_devname);
register_fail:
iounmap(priv->regs);
regs_fail:
+ if (priv->phy_node)
+ of_node_put(priv->phy_node);
+ if (priv->tbi_node)
+ of_node_put(priv->tbi_node);
free_netdev(dev);
return err;
}
{
struct gfar_private *priv = dev_get_drvdata(&ofdev->dev);
+ if (priv->phy_node)
+ of_node_put(priv->phy_node);
+ if (priv->tbi_node)
+ of_node_put(priv->tbi_node);
+
dev_set_drvdata(&ofdev->dev, NULL);
+ unregister_netdev(priv->ndev);
iounmap(priv->regs);
- free_netdev(priv->dev);
+ free_netdev(priv->ndev);
return 0;
}
#ifdef CONFIG_PM
-static int gfar_suspend(struct of_device *ofdev, pm_message_t state)
+
+static int gfar_suspend(struct device *dev)
{
- struct gfar_private *priv = dev_get_drvdata(&ofdev->dev);
- struct net_device *dev = priv->dev;
+ struct gfar_private *priv = dev_get_drvdata(dev);
+ struct net_device *ndev = priv->ndev;
unsigned long flags;
u32 tempval;
int magic_packet = priv->wol_en &&
(priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET);
- netif_device_detach(dev);
+ netif_device_detach(ndev);
- if (netif_running(dev)) {
+ if (netif_running(ndev)) {
spin_lock_irqsave(&priv->txlock, flags);
spin_lock(&priv->rxlock);
- gfar_halt_nodisable(dev);
+ gfar_halt_nodisable(ndev);
/* Disable Tx, and Rx if wake-on-LAN is disabled. */
tempval = gfar_read(&priv->regs->maccfg1);
return 0;
}
-static int gfar_resume(struct of_device *ofdev)
+static int gfar_resume(struct device *dev)
{
- struct gfar_private *priv = dev_get_drvdata(&ofdev->dev);
- struct net_device *dev = priv->dev;
+ struct gfar_private *priv = dev_get_drvdata(dev);
+ struct net_device *ndev = priv->ndev;
unsigned long flags;
u32 tempval;
int magic_packet = priv->wol_en &&
(priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET);
- if (!netif_running(dev)) {
- netif_device_attach(dev);
+ if (!netif_running(ndev)) {
+ netif_device_attach(ndev);
return 0;
}
tempval &= ~MACCFG2_MPEN;
gfar_write(&priv->regs->maccfg2, tempval);
- gfar_start(dev);
+ gfar_start(ndev);
spin_unlock(&priv->rxlock);
spin_unlock_irqrestore(&priv->txlock, flags);
- netif_device_attach(dev);
+ netif_device_attach(ndev);
+
+ napi_enable(&priv->napi);
+
+ return 0;
+}
+
+static int gfar_restore(struct device *dev)
+{
+ struct gfar_private *priv = dev_get_drvdata(dev);
+ struct net_device *ndev = priv->ndev;
+
+ if (!netif_running(ndev))
+ return 0;
+
+ gfar_init_bds(ndev);
+ init_registers(ndev);
+ gfar_set_mac_address(ndev);
+ gfar_init_mac(ndev);
+ gfar_start(ndev);
+
+ priv->oldlink = 0;
+ priv->oldspeed = 0;
+ priv->oldduplex = -1;
+
+ if (priv->phydev)
+ phy_start(priv->phydev);
+ netif_device_attach(ndev);
napi_enable(&priv->napi);
return 0;
}
+
+static struct dev_pm_ops gfar_pm_ops = {
+ .suspend = gfar_suspend,
+ .resume = gfar_resume,
+ .freeze = gfar_suspend,
+ .thaw = gfar_resume,
+ .restore = gfar_restore,
+};
+
+#define GFAR_PM_OPS (&gfar_pm_ops)
+
+static int gfar_legacy_suspend(struct of_device *ofdev, pm_message_t state)
+{
+ return gfar_suspend(&ofdev->dev);
+}
+
+static int gfar_legacy_resume(struct of_device *ofdev)
+{
+ return gfar_resume(&ofdev->dev);
+}
+
#else
-#define gfar_suspend NULL
-#define gfar_resume NULL
+
+#define GFAR_PM_OPS NULL
+#define gfar_legacy_suspend NULL
+#define gfar_legacy_resume NULL
+
#endif
/* Reads the controller's registers to determine what interface
uint gigabit_support =
priv->device_flags & FSL_GIANFAR_DEV_HAS_GIGABIT ?
SUPPORTED_1000baseT_Full : 0;
- struct phy_device *phydev;
phy_interface_t interface;
priv->oldlink = 0;
interface = gfar_get_interface(dev);
- phydev = phy_connect(dev, priv->phy_bus_id, &adjust_link, 0, interface);
+ priv->phydev = of_phy_connect(dev, priv->phy_node, &adjust_link, 0,
+ interface);
+ if (!priv->phydev)
+ priv->phydev = of_phy_connect_fixed_link(dev, &adjust_link,
+ interface);
+ if (!priv->phydev) {
+ dev_err(&dev->dev, "could not attach to PHY\n");
+ return -ENODEV;
+ }
if (interface == PHY_INTERFACE_MODE_SGMII)
gfar_configure_serdes(dev);
- if (IS_ERR(phydev)) {
- printk(KERN_ERR "%s: Could not attach to PHY\n", dev->name);
- return PTR_ERR(phydev);
- }
-
/* Remove any features not supported by the controller */
- phydev->supported &= (GFAR_SUPPORTED | gigabit_support);
- phydev->advertising = phydev->supported;
-
- priv->phydev = phydev;
+ priv->phydev->supported &= (GFAR_SUPPORTED | gigabit_support);
+ priv->phydev->advertising = priv->phydev->supported;
return 0;
}
static void gfar_configure_serdes(struct net_device *dev)
{
struct gfar_private *priv = netdev_priv(dev);
+ struct phy_device *tbiphy;
+
+ if (!priv->tbi_node) {
+ dev_warn(&dev->dev, "error: SGMII mode requires that the "
+ "device tree specify a tbi-handle\n");
+ return;
+ }
- if (!priv->tbiphy) {
- printk(KERN_WARNING "SGMII mode requires that the device "
- "tree specify a tbi-handle\n");
+ tbiphy = of_phy_find_device(priv->tbi_node);
+ if (!tbiphy) {
+ dev_err(&dev->dev, "error: Could not get TBI device\n");
return;
}
* everything for us? Resetting it takes the link down and requires
* several seconds for it to come back.
*/
- if (phy_read(priv->tbiphy, MII_BMSR) & BMSR_LSTATUS)
+ if (phy_read(tbiphy, MII_BMSR) & BMSR_LSTATUS)
return;
/* Single clk mode, mii mode off(for serdes communication) */
- phy_write(priv->tbiphy, MII_TBICON, TBICON_CLK_SELECT);
+ phy_write(tbiphy, MII_TBICON, TBICON_CLK_SELECT);
- phy_write(priv->tbiphy, MII_ADVERTISE,
+ phy_write(tbiphy, MII_ADVERTISE,
ADVERTISE_1000XFULL | ADVERTISE_1000XPAUSE |
ADVERTISE_1000XPSE_ASYM);
- phy_write(priv->tbiphy, MII_BMCR, BMCR_ANENABLE |
+ phy_write(tbiphy, MII_BMCR, BMCR_ANENABLE |
BMCR_ANRESTART | BMCR_FULLDPLX | BMCR_SPEED1000);
}
void stop_gfar(struct net_device *dev)
{
struct gfar_private *priv = netdev_priv(dev);
- struct gfar __iomem *regs = priv->regs;
unsigned long flags;
phy_stop(priv->phydev);
free_irq(priv->interruptTransmit, dev);
free_irq(priv->interruptReceive, dev);
} else {
- free_irq(priv->interruptTransmit, dev);
+ free_irq(priv->interruptTransmit, dev);
}
free_skb_resources(priv);
-
- dma_free_coherent(&dev->dev,
- sizeof(struct txbd8)*priv->tx_ring_size
- + sizeof(struct rxbd8)*priv->rx_ring_size,
- priv->tx_bd_base,
- gfar_read(®s->tbase0));
}
/* If there are any tx skbs or rx skbs still around, free them.
* Then free tx_skbuff and rx_skbuff */
static void free_skb_resources(struct gfar_private *priv)
{
+ struct device *dev = &priv->ofdev->dev;
struct rxbd8 *rxbdp;
struct txbd8 *txbdp;
int i, j;
/* Go through all the buffer descriptors and free their data buffers */
txbdp = priv->tx_bd_base;
+ if (!priv->tx_skbuff)
+ goto skip_tx_skbuff;
+
for (i = 0; i < priv->tx_ring_size; i++) {
if (!priv->tx_skbuff[i])
continue;
- dma_unmap_single(&priv->dev->dev, txbdp->bufPtr,
+ dma_unmap_single(&priv->ofdev->dev, txbdp->bufPtr,
txbdp->length, DMA_TO_DEVICE);
txbdp->lstatus = 0;
for (j = 0; j < skb_shinfo(priv->tx_skbuff[i])->nr_frags; j++) {
txbdp++;
- dma_unmap_page(&priv->dev->dev, txbdp->bufPtr,
+ dma_unmap_page(&priv->ofdev->dev, txbdp->bufPtr,
txbdp->length, DMA_TO_DEVICE);
}
txbdp++;
}
kfree(priv->tx_skbuff);
+skip_tx_skbuff:
rxbdp = priv->rx_bd_base;
- /* rx_skbuff is not guaranteed to be allocated, so only
- * free it and its contents if it is allocated */
- if(priv->rx_skbuff != NULL) {
- for (i = 0; i < priv->rx_ring_size; i++) {
- if (priv->rx_skbuff[i]) {
- dma_unmap_single(&priv->dev->dev, rxbdp->bufPtr,
- priv->rx_buffer_size,
- DMA_FROM_DEVICE);
-
- dev_kfree_skb_any(priv->rx_skbuff[i]);
- priv->rx_skbuff[i] = NULL;
- }
-
- rxbdp->lstatus = 0;
- rxbdp->bufPtr = 0;
+ if (!priv->rx_skbuff)
+ goto skip_rx_skbuff;
- rxbdp++;
+ for (i = 0; i < priv->rx_ring_size; i++) {
+ if (priv->rx_skbuff[i]) {
+ dma_unmap_single(&priv->ofdev->dev, rxbdp->bufPtr,
+ priv->rx_buffer_size,
+ DMA_FROM_DEVICE);
+ dev_kfree_skb_any(priv->rx_skbuff[i]);
+ priv->rx_skbuff[i] = NULL;
}
- kfree(priv->rx_skbuff);
+ rxbdp->lstatus = 0;
+ rxbdp->bufPtr = 0;
+ rxbdp++;
}
+
+ kfree(priv->rx_skbuff);
+skip_rx_skbuff:
+
+ dma_free_coherent(dev, sizeof(*txbdp) * priv->tx_ring_size +
+ sizeof(*rxbdp) * priv->rx_ring_size,
+ priv->tx_bd_base, priv->tx_bd_dma_base);
}
void gfar_start(struct net_device *dev)
}
/* Bring the controller up and running */
-int startup_gfar(struct net_device *dev)
+int startup_gfar(struct net_device *ndev)
{
- struct txbd8 *txbdp;
- struct rxbd8 *rxbdp;
- dma_addr_t addr = 0;
- unsigned long vaddr;
- int i;
- struct gfar_private *priv = netdev_priv(dev);
+ struct gfar_private *priv = netdev_priv(ndev);
struct gfar __iomem *regs = priv->regs;
- int err = 0;
- u32 rctrl = 0;
- u32 attrs = 0;
+ int err;
gfar_write(®s->imask, IMASK_INIT_CLEAR);
- /* Allocate memory for the buffer descriptors */
- vaddr = (unsigned long) dma_alloc_coherent(&dev->dev,
- sizeof (struct txbd8) * priv->tx_ring_size +
- sizeof (struct rxbd8) * priv->rx_ring_size,
- &addr, GFP_KERNEL);
-
- if (vaddr == 0) {
- if (netif_msg_ifup(priv))
- printk(KERN_ERR "%s: Could not allocate buffer descriptors!\n",
- dev->name);
- return -ENOMEM;
- }
-
- priv->tx_bd_base = (struct txbd8 *) vaddr;
-
- /* enet DMA only understands physical addresses */
- gfar_write(®s->tbase0, addr);
-
- /* Start the rx descriptor ring where the tx ring leaves off */
- addr = addr + sizeof (struct txbd8) * priv->tx_ring_size;
- vaddr = vaddr + sizeof (struct txbd8) * priv->tx_ring_size;
- priv->rx_bd_base = (struct rxbd8 *) vaddr;
- gfar_write(®s->rbase0, addr);
-
- /* Setup the skbuff rings */
- priv->tx_skbuff =
- (struct sk_buff **) kmalloc(sizeof (struct sk_buff *) *
- priv->tx_ring_size, GFP_KERNEL);
-
- if (NULL == priv->tx_skbuff) {
- if (netif_msg_ifup(priv))
- printk(KERN_ERR "%s: Could not allocate tx_skbuff\n",
- dev->name);
- err = -ENOMEM;
- goto tx_skb_fail;
- }
-
- for (i = 0; i < priv->tx_ring_size; i++)
- priv->tx_skbuff[i] = NULL;
-
- priv->rx_skbuff =
- (struct sk_buff **) kmalloc(sizeof (struct sk_buff *) *
- priv->rx_ring_size, GFP_KERNEL);
-
- if (NULL == priv->rx_skbuff) {
- if (netif_msg_ifup(priv))
- printk(KERN_ERR "%s: Could not allocate rx_skbuff\n",
- dev->name);
- err = -ENOMEM;
- goto rx_skb_fail;
- }
-
- for (i = 0; i < priv->rx_ring_size; i++)
- priv->rx_skbuff[i] = NULL;
-
- /* Initialize some variables in our dev structure */
- priv->num_txbdfree = priv->tx_ring_size;
- priv->dirty_tx = priv->cur_tx = priv->tx_bd_base;
- priv->cur_rx = priv->rx_bd_base;
- priv->skb_curtx = priv->skb_dirtytx = 0;
- priv->skb_currx = 0;
-
- /* Initialize Transmit Descriptor Ring */
- txbdp = priv->tx_bd_base;
- for (i = 0; i < priv->tx_ring_size; i++) {
- txbdp->lstatus = 0;
- txbdp->bufPtr = 0;
- txbdp++;
- }
-
- /* Set the last descriptor in the ring to indicate wrap */
- txbdp--;
- txbdp->status |= TXBD_WRAP;
-
- rxbdp = priv->rx_bd_base;
- for (i = 0; i < priv->rx_ring_size; i++) {
- struct sk_buff *skb;
-
- skb = gfar_new_skb(dev);
-
- if (!skb) {
- printk(KERN_ERR "%s: Can't allocate RX buffers\n",
- dev->name);
-
- goto err_rxalloc_fail;
- }
-
- priv->rx_skbuff[i] = skb;
-
- gfar_new_rxbdp(dev, rxbdp, skb);
-
- rxbdp++;
- }
+ err = gfar_alloc_skb_resources(ndev);
+ if (err)
+ return err;
- /* Set the last descriptor in the ring to wrap */
- rxbdp--;
- rxbdp->status |= RXBD_WRAP;
+ gfar_init_mac(ndev);
/* If the device has multiple interrupts, register for
* them. Otherwise, only register for the one */
if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MULTI_INTR) {
/* Install our interrupt handlers for Error,
* Transmit, and Receive */
- if (request_irq(priv->interruptError, gfar_error,
- 0, priv->int_name_er, dev) < 0) {
+ err = request_irq(priv->interruptError, gfar_error, 0,
+ priv->int_name_er, ndev);
+ if (err) {
if (netif_msg_intr(priv))
- printk(KERN_ERR "%s: Can't get IRQ %d\n",
- dev->name, priv->interruptError);
-
- err = -1;
+ pr_err("%s: Can't get IRQ %d\n", ndev->name,
+ priv->interruptError);
goto err_irq_fail;
}
- if (request_irq(priv->interruptTransmit, gfar_transmit,
- 0, priv->int_name_tx, dev) < 0) {
+ err = request_irq(priv->interruptTransmit, gfar_transmit, 0,
+ priv->int_name_tx, ndev);
+ if (err) {
if (netif_msg_intr(priv))
- printk(KERN_ERR "%s: Can't get IRQ %d\n",
- dev->name, priv->interruptTransmit);
-
- err = -1;
-
+ pr_err("%s: Can't get IRQ %d\n", ndev->name,
+ priv->interruptTransmit);
goto tx_irq_fail;
}
- if (request_irq(priv->interruptReceive, gfar_receive,
- 0, priv->int_name_rx, dev) < 0) {
+ err = request_irq(priv->interruptReceive, gfar_receive, 0,
+ priv->int_name_rx, ndev);
+ if (err) {
if (netif_msg_intr(priv))
- printk(KERN_ERR "%s: Can't get IRQ %d (receive0)\n",
- dev->name, priv->interruptReceive);
-
- err = -1;
+ pr_err("%s: Can't get IRQ %d (receive0)\n",
+ ndev->name, priv->interruptReceive);
goto rx_irq_fail;
}
} else {
- if (request_irq(priv->interruptTransmit, gfar_interrupt,
- 0, priv->int_name_tx, dev) < 0) {
+ err = request_irq(priv->interruptTransmit, gfar_interrupt,
+ 0, priv->int_name_tx, ndev);
+ if (err) {
if (netif_msg_intr(priv))
- printk(KERN_ERR "%s: Can't get IRQ %d\n",
- dev->name, priv->interruptTransmit);
-
- err = -1;
+ pr_err("%s: Can't get IRQ %d\n", ndev->name,
+ priv->interruptTransmit);
goto err_irq_fail;
}
}
- phy_start(priv->phydev);
-
- /* Configure the coalescing support */
- gfar_write(®s->txic, 0);
- if (priv->txcoalescing)
- gfar_write(®s->txic, priv->txic);
-
- gfar_write(®s->rxic, 0);
- if (priv->rxcoalescing)
- gfar_write(®s->rxic, priv->rxic);
-
- if (priv->rx_csum_enable)
- rctrl |= RCTRL_CHECKSUMMING;
-
- if (priv->extended_hash) {
- rctrl |= RCTRL_EXTHASH;
-
- gfar_clear_exact_match(dev);
- rctrl |= RCTRL_EMEN;
- }
-
- if (priv->padding) {
- rctrl &= ~RCTRL_PAL_MASK;
- rctrl |= RCTRL_PADDING(priv->padding);
- }
-
- /* Init rctrl based on our settings */
- gfar_write(&priv->regs->rctrl, rctrl);
-
- if (dev->features & NETIF_F_IP_CSUM)
- gfar_write(&priv->regs->tctrl, TCTRL_INIT_CSUM);
-
- /* Set the extraction length and index */
- attrs = ATTRELI_EL(priv->rx_stash_size) |
- ATTRELI_EI(priv->rx_stash_index);
-
- gfar_write(&priv->regs->attreli, attrs);
-
- /* Start with defaults, and add stashing or locking
- * depending on the approprate variables */
- attrs = ATTR_INIT_SETTINGS;
-
- if (priv->bd_stash_en)
- attrs |= ATTR_BDSTASH;
-
- if (priv->rx_stash_size != 0)
- attrs |= ATTR_BUFSTASH;
-
- gfar_write(&priv->regs->attr, attrs);
-
- gfar_write(&priv->regs->fifo_tx_thr, priv->fifo_threshold);
- gfar_write(&priv->regs->fifo_tx_starve, priv->fifo_starve);
- gfar_write(&priv->regs->fifo_tx_starve_shutoff, priv->fifo_starve_off);
-
/* Start the controller */
- gfar_start(dev);
+ gfar_start(ndev);
+
+ phy_start(priv->phydev);
return 0;
rx_irq_fail:
- free_irq(priv->interruptTransmit, dev);
+ free_irq(priv->interruptTransmit, ndev);
tx_irq_fail:
- free_irq(priv->interruptError, dev);
+ free_irq(priv->interruptError, ndev);
err_irq_fail:
-err_rxalloc_fail:
-rx_skb_fail:
free_skb_resources(priv);
-tx_skb_fail:
- dma_free_coherent(&dev->dev,
- sizeof(struct txbd8)*priv->tx_ring_size
- + sizeof(struct rxbd8)*priv->rx_ring_size,
- priv->tx_bd_base,
- gfar_read(®s->tbase0));
-
return err;
}
napi_enable(&priv->napi);
+ skb_queue_head_init(&priv->rx_recycle);
+
/* Initialize a bunch of registers */
init_registers(dev);
netif_start_queue(dev);
+ device_set_wakeup_enable(&dev->dev, priv->wol_en);
+
return err;
}
static inline struct txfcb *gfar_add_fcb(struct sk_buff *skb)
{
- struct txfcb *fcb = (struct txfcb *)skb_push (skb, GMAC_FCB_LEN);
+ struct txfcb *fcb = (struct txfcb *)skb_push(skb, GMAC_FCB_LEN);
- cacheable_memzero(fcb, GMAC_FCB_LEN);
+ memset(fcb, 0, GMAC_FCB_LEN);
return fcb;
}
base = priv->tx_bd_base;
+ /* make space for additional header when fcb is needed */
+ if (((skb->ip_summed == CHECKSUM_PARTIAL) ||
+ (priv->vlgrp && vlan_tx_tag_present(skb))) &&
+ (skb_headroom(skb) < GMAC_FCB_LEN)) {
+ struct sk_buff *skb_new;
+
+ skb_new = skb_realloc_headroom(skb, GMAC_FCB_LEN);
+ if (!skb_new) {
+ dev->stats.tx_errors++;
+ kfree_skb(skb);
+ return NETDEV_TX_OK;
+ }
+ kfree_skb(skb);
+ skb = skb_new;
+ }
+
/* total number of fragments in the SKB */
nr_frags = skb_shinfo(skb)->nr_frags;
spin_lock_irqsave(&priv->txlock, flags);
/* check if there is space to queue this packet */
- if (nr_frags > priv->num_txbdfree) {
+ if ((nr_frags+1) > priv->num_txbdfree) {
/* no space, stop the queue */
netif_stop_queue(dev);
dev->stats.tx_fifo_errors++;
if (i == nr_frags - 1)
lstatus |= BD_LFLAG(TXBD_LAST | TXBD_INTERRUPT);
- bufaddr = dma_map_page(&dev->dev,
+ bufaddr = dma_map_page(&priv->ofdev->dev,
skb_shinfo(skb)->frags[i].page,
skb_shinfo(skb)->frags[i].page_offset,
length,
/* setup the TxBD length and buffer pointer for the first BD */
priv->tx_skbuff[priv->skb_curtx] = skb;
- txbdp_start->bufPtr = dma_map_single(&dev->dev, skb->data,
+ txbdp_start->bufPtr = dma_map_single(&priv->ofdev->dev, skb->data,
skb_headlen(skb), DMA_TO_DEVICE);
lstatus |= BD_LFLAG(TXBD_CRC | TXBD_READY) | skb_headlen(skb);
/* Unlock priv */
spin_unlock_irqrestore(&priv->txlock, flags);
- return 0;
+ return NETDEV_TX_OK;
}
/* Stops the kernel queue, and halts the controller */
napi_disable(&priv->napi);
+ skb_queue_purge(&priv->rx_recycle);
cancel_work_sync(&priv->reset_task);
stop_gfar(dev);
{
struct gfar_private *priv = netdev_priv(dev);
unsigned long flags;
- struct vlan_group *old_grp;
u32 tempval;
spin_lock_irqsave(&priv->rxlock, flags);
- old_grp = priv->vlgrp;
-
- if (old_grp == grp)
- return;
+ priv->vlgrp = grp;
if (grp) {
/* Enable VLAN tag insertion */
/* Enable VLAN tag extraction */
tempval = gfar_read(&priv->regs->rctrl);
- tempval |= RCTRL_VLEX;
tempval |= (RCTRL_VLEX | RCTRL_PRSDEP_INIT);
gfar_write(&priv->regs->rctrl, tempval);
} else {
{
struct gfar_private *priv = container_of(work, struct gfar_private,
reset_task);
- struct net_device *dev = priv->dev;
+ struct net_device *dev = priv->ndev;
if (dev->flags & IFF_UP) {
+ netif_stop_queue(dev);
stop_gfar(dev);
startup_gfar(dev);
+ netif_start_queue(dev);
}
netif_tx_schedule_all(dev);
(lstatus & BD_LENGTH_MASK))
break;
- dma_unmap_single(&dev->dev,
+ dma_unmap_single(&priv->ofdev->dev,
bdp->bufPtr,
bdp->length,
DMA_TO_DEVICE);
bdp = next_txbd(bdp, base, tx_ring_size);
for (i = 0; i < frags; i++) {
- dma_unmap_page(&dev->dev,
+ dma_unmap_page(&priv->ofdev->dev,
bdp->bufPtr,
bdp->length,
DMA_TO_DEVICE);
bdp = next_txbd(bdp, base, tx_ring_size);
}
- dev_kfree_skb_any(skb);
+ /*
+ * If there's room in the queue (limit it to rx_buffer_size)
+ * we add this skb back into the pool, if it's the right size
+ */
+ if (skb_queue_len(&priv->rx_recycle) < priv->rx_ring_size &&
+ skb_recycle_check(skb, priv->rx_buffer_size +
+ RXBUF_ALIGNMENT))
+ __skb_queue_head(&priv->rx_recycle, skb);
+ else
+ dev_kfree_skb_any(skb);
+
priv->tx_skbuff[skb_dirtytx] = NULL;
skb_dirtytx = (skb_dirtytx + 1) &
static void gfar_schedule_cleanup(struct net_device *dev)
{
struct gfar_private *priv = netdev_priv(dev);
- if (netif_rx_schedule_prep(&priv->napi)) {
+ unsigned long flags;
+
+ spin_lock_irqsave(&priv->txlock, flags);
+ spin_lock(&priv->rxlock);
+
+ if (napi_schedule_prep(&priv->napi)) {
gfar_write(&priv->regs->imask, IMASK_RTX_DISABLED);
- __netif_rx_schedule(&priv->napi);
+ __napi_schedule(&priv->napi);
+ } else {
+ /*
+ * Clear IEVENT, so interrupts aren't called again
+ * because of the packets that have already arrived.
+ */
+ gfar_write(&priv->regs->ievent, IEVENT_RTX_MASK);
}
+
+ spin_unlock(&priv->rxlock);
+ spin_unlock_irqrestore(&priv->txlock, flags);
}
/* Interrupt Handler for Transmit complete */
struct sk_buff *skb)
{
struct gfar_private *priv = netdev_priv(dev);
- u32 lstatus;
-
- bdp->bufPtr = dma_map_single(&dev->dev, skb->data,
- priv->rx_buffer_size, DMA_FROM_DEVICE);
+ dma_addr_t buf;
- lstatus = BD_LFLAG(RXBD_EMPTY | RXBD_INTERRUPT);
-
- if (bdp == priv->rx_bd_base + priv->rx_ring_size - 1)
- lstatus |= BD_LFLAG(RXBD_WRAP);
-
- eieio();
-
- bdp->lstatus = lstatus;
+ buf = dma_map_single(&priv->ofdev->dev, skb->data,
+ priv->rx_buffer_size, DMA_FROM_DEVICE);
+ gfar_init_rxbdp(dev, bdp, buf);
}
struct gfar_private *priv = netdev_priv(dev);
struct sk_buff *skb = NULL;
- /* We have to allocate the skb, so keep trying till we succeed */
- skb = netdev_alloc_skb(dev, priv->rx_buffer_size + RXBUF_ALIGNMENT);
+ skb = __skb_dequeue(&priv->rx_recycle);
+ if (!skb)
+ skb = netdev_alloc_skb(dev,
+ priv->rx_buffer_size + RXBUF_ALIGNMENT);
if (!skb)
return NULL;
skb = priv->rx_skbuff[priv->skb_currx];
- dma_unmap_single(&priv->dev->dev, bdp->bufPtr,
+ dma_unmap_single(&priv->ofdev->dev, bdp->bufPtr,
priv->rx_buffer_size, DMA_FROM_DEVICE);
/* We drop the frame if we failed to allocate a new buffer */
if (unlikely(!newskb))
newskb = skb;
- else if (skb)
- dev_kfree_skb_any(skb);
+ else if (skb) {
+ /*
+ * We need to reset ->data to what it
+ * was before gfar_new_skb() re-aligned
+ * it to an RXBUF_ALIGNMENT boundary
+ * before we put the skb back on the
+ * recycle list.
+ */
+ skb->data = skb->head + NET_SKB_PAD;
+ __skb_queue_head(&priv->rx_recycle, skb);
+ }
} else {
/* Increment the number of packets */
dev->stats.rx_packets++;
skb_put(skb, pkt_len);
dev->stats.rx_bytes += pkt_len;
+ if (in_irq() || irqs_disabled())
+ printk("Interrupt problem!\n");
gfar_process_frame(dev, skb, amount_pull);
} else {
static int gfar_poll(struct napi_struct *napi, int budget)
{
struct gfar_private *priv = container_of(napi, struct gfar_private, napi);
- struct net_device *dev = priv->dev;
+ struct net_device *dev = priv->ndev;
int tx_cleaned = 0;
int rx_cleaned = 0;
unsigned long flags;
return budget;
if (rx_cleaned < budget) {
- netif_rx_complete(napi);
+ napi_complete(napi);
/* Clear the halt bit in RSTAT */
gfar_write(&priv->regs->rstat, RSTAT_CLEAR_RHALT);
return IRQ_HANDLED;
}
-/* work with hotplug and coldplug */
-MODULE_ALIAS("platform:fsl-gianfar");
-
static struct of_device_id gfar_match[] =
{
{
},
{},
};
+MODULE_DEVICE_TABLE(of, gfar_match);
/* Structure for a device driver */
static struct of_platform_driver gfar_driver = {
.probe = gfar_probe,
.remove = gfar_remove,
- .suspend = gfar_suspend,
- .resume = gfar_resume,
+ .suspend = gfar_legacy_suspend,
+ .resume = gfar_legacy_resume,
+ .driver.pm = GFAR_PM_OPS,
};
static int __init gfar_init(void)
{
- int err = gfar_mdio_init();
-
- if (err)
- return err;
-
- err = of_register_platform_driver(&gfar_driver);
-
- if (err)
- gfar_mdio_exit();
-
- return err;
+ return of_register_platform_driver(&gfar_driver);
}
static void __exit gfar_exit(void)
{
of_unregister_platform_driver(&gfar_driver);
- gfar_mdio_exit();
}
module_init(gfar_init);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff