diff options
Diffstat (limited to 'drivers/net/gianfar.c')
| -rw-r--r-- | drivers/net/gianfar.c | 203 |
1 files changed, 128 insertions, 75 deletions
diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c index 25bdd0832df5..b8394cf134e8 100644 --- a/drivers/net/gianfar.c +++ b/drivers/net/gianfar.c @@ -44,8 +44,7 @@ * happen immediately, but will wait until either a set number * of frames or amount of time have passed). In NAPI, the * interrupt handler will signal there is work to be done, and - * exit. Without NAPI, the packet(s) will be handled - * immediately. Both methods will start at the last known empty + * exit. This method will start at the last known empty * descriptor, and process every subsequent descriptor until there * are none left with data (NAPI will stop after a set number of * packets to give time to other tasks, but will eventually @@ -101,12 +100,6 @@ #undef BRIEF_GFAR_ERRORS #undef VERBOSE_GFAR_ERRORS -#ifdef CONFIG_GFAR_NAPI -#define RECEIVE(x) netif_receive_skb(x) -#else -#define RECEIVE(x) netif_rx(x) -#endif - const char gfar_driver_name[] = "Gianfar Ethernet"; const char gfar_driver_version[] = "1.3"; @@ -131,9 +124,7 @@ static void free_skb_resources(struct gfar_private *priv); static void gfar_set_multi(struct net_device *dev); static void gfar_set_hash_for_addr(struct net_device *dev, u8 *addr); static void gfar_configure_serdes(struct net_device *dev); -#ifdef CONFIG_GFAR_NAPI static int gfar_poll(struct napi_struct *napi, int budget); -#endif #ifdef CONFIG_NET_POLL_CONTROLLER static void gfar_netpoll(struct net_device *dev); #endif @@ -143,6 +134,9 @@ static int gfar_process_frame(struct net_device *dev, struct sk_buff *skb, int l static void gfar_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp); void gfar_halt(struct net_device *dev); +#ifdef CONFIG_PM +static void gfar_halt_nodisable(struct net_device *dev); +#endif 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); @@ -216,6 +210,7 @@ static int gfar_probe(struct platform_device *pdev) spin_lock_init(&priv->txlock); spin_lock_init(&priv->rxlock); + spin_lock_init(&priv->bflock); platform_set_drvdata(pdev, dev); @@ -260,9 +255,7 @@ static int gfar_probe(struct platform_device *pdev) dev->hard_start_xmit = gfar_start_xmit; dev->tx_timeout = gfar_timeout; dev->watchdog_timeo = TX_TIMEOUT; -#ifdef CONFIG_GFAR_NAPI netif_napi_add(dev, &priv->napi, gfar_poll, GFAR_DEV_WEIGHT); -#endif #ifdef CONFIG_NET_POLL_CONTROLLER dev->poll_controller = gfar_netpoll; #endif @@ -363,11 +356,7 @@ static int gfar_probe(struct platform_device *pdev) /* Even more device info helps when determining which kernel */ /* provided which set of benchmarks. */ -#ifdef CONFIG_GFAR_NAPI printk(KERN_INFO "%s: Running with NAPI enabled\n", dev->name); -#else - printk(KERN_INFO "%s: Running with NAPI disabled\n", dev->name); -#endif printk(KERN_INFO "%s: %d/%d RX/TX BD ring size\n", dev->name, priv->rx_ring_size, priv->tx_ring_size); @@ -393,6 +382,103 @@ static int gfar_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_PM +static int gfar_suspend(struct platform_device *pdev, pm_message_t state) +{ + struct net_device *dev = platform_get_drvdata(pdev); + struct gfar_private *priv = netdev_priv(dev); + unsigned long flags; + u32 tempval; + + int magic_packet = priv->wol_en && + (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET); + + netif_device_detach(dev); + + if (netif_running(dev)) { + spin_lock_irqsave(&priv->txlock, flags); + spin_lock(&priv->rxlock); + + gfar_halt_nodisable(dev); + + /* Disable Tx, and Rx if wake-on-LAN is disabled. */ + tempval = gfar_read(&priv->regs->maccfg1); + + tempval &= ~MACCFG1_TX_EN; + + if (!magic_packet) + tempval &= ~MACCFG1_RX_EN; + + gfar_write(&priv->regs->maccfg1, tempval); + + spin_unlock(&priv->rxlock); + spin_unlock_irqrestore(&priv->txlock, flags); + +#ifdef CONFIG_GFAR_NAPI + napi_disable(&priv->napi); +#endif + + if (magic_packet) { + /* Enable interrupt on Magic Packet */ + gfar_write(&priv->regs->imask, IMASK_MAG); + + /* Enable Magic Packet mode */ + tempval = gfar_read(&priv->regs->maccfg2); + tempval |= MACCFG2_MPEN; + gfar_write(&priv->regs->maccfg2, tempval); + } else { + phy_stop(priv->phydev); + } + } + + return 0; +} + +static int gfar_resume(struct platform_device *pdev) +{ + struct net_device *dev = platform_get_drvdata(pdev); + struct gfar_private *priv = netdev_priv(dev); + unsigned long flags; + u32 tempval; + int magic_packet = priv->wol_en && + (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET); + + if (!netif_running(dev)) { + netif_device_attach(dev); + return 0; + } + + if (!magic_packet && priv->phydev) + phy_start(priv->phydev); + + /* Disable Magic Packet mode, in case something + * else woke us up. + */ + + spin_lock_irqsave(&priv->txlock, flags); + spin_lock(&priv->rxlock); + + tempval = gfar_read(&priv->regs->maccfg2); + tempval &= ~MACCFG2_MPEN; + gfar_write(&priv->regs->maccfg2, tempval); + + gfar_start(dev); + + spin_unlock(&priv->rxlock); + spin_unlock_irqrestore(&priv->txlock, flags); + + netif_device_attach(dev); + +#ifdef CONFIG_GFAR_NAPI + napi_enable(&priv->napi); +#endif + + return 0; +} +#else +#define gfar_suspend NULL +#define gfar_resume NULL +#endif /* Reads the controller's registers to determine what interface * connects it to the PHY. @@ -549,8 +635,9 @@ static void init_registers(struct net_device *dev) } +#ifdef CONFIG_PM /* Halt the receive and transmit queues */ -void gfar_halt(struct net_device *dev) +static void gfar_halt_nodisable(struct net_device *dev) { struct gfar_private *priv = netdev_priv(dev); struct gfar __iomem *regs = priv->regs; @@ -573,6 +660,15 @@ void gfar_halt(struct net_device *dev) (IEVENT_GRSC | IEVENT_GTSC))) cpu_relax(); } +} +#endif + +/* Halt the receive and transmit queues */ +void gfar_halt(struct net_device *dev) +{ + struct gfar_private *priv = netdev_priv(dev); + struct gfar __iomem *regs = priv->regs; + u32 tempval; /* Disable Rx and Tx */ tempval = gfar_read(®s->maccfg1); @@ -928,7 +1024,7 @@ rx_irq_fail: tx_irq_fail: free_irq(priv->interruptError, dev); err_irq_fail: -err_rxalloc_fail: +err_rxalloc_fail: rx_skb_fail: free_skb_resources(priv); tx_skb_fail: @@ -945,14 +1041,10 @@ tx_skb_fail: /* Returns 0 for success. */ static int gfar_enet_open(struct net_device *dev) { -#ifdef CONFIG_GFAR_NAPI struct gfar_private *priv = netdev_priv(dev); -#endif int err; -#ifdef CONFIG_GFAR_NAPI napi_enable(&priv->napi); -#endif /* Initialize a bunch of registers */ init_registers(dev); @@ -962,17 +1054,13 @@ static int gfar_enet_open(struct net_device *dev) err = init_phy(dev); if(err) { -#ifdef CONFIG_GFAR_NAPI napi_disable(&priv->napi); -#endif return err; } err = startup_gfar(dev); if (err) { -#ifdef CONFIG_GFAR_NAPI napi_disable(&priv->napi); -#endif return err; } @@ -1128,9 +1216,7 @@ static int gfar_close(struct net_device *dev) { struct gfar_private *priv = netdev_priv(dev); -#ifdef CONFIG_GFAR_NAPI napi_disable(&priv->napi); -#endif stop_gfar(dev); @@ -1259,7 +1345,7 @@ static void gfar_timeout(struct net_device *dev) startup_gfar(dev); } - netif_schedule(dev); + netif_tx_schedule_all(dev); } /* Interrupt Handler for Transmit complete */ @@ -1427,14 +1513,9 @@ irqreturn_t gfar_receive(int irq, void *dev_id) { struct net_device *dev = (struct net_device *) dev_id; struct gfar_private *priv = netdev_priv(dev); -#ifdef CONFIG_GFAR_NAPI u32 tempval; -#else - unsigned long flags; -#endif /* support NAPI */ -#ifdef CONFIG_GFAR_NAPI /* Clear IEVENT, so interrupts aren't called again * because of the packets that have already arrived */ gfar_write(&priv->regs->ievent, IEVENT_RTX_MASK); @@ -1451,38 +1532,10 @@ irqreturn_t gfar_receive(int irq, void *dev_id) dev->name, gfar_read(&priv->regs->ievent), gfar_read(&priv->regs->imask)); } -#else - /* Clear IEVENT, so rx interrupt isn't called again - * because of this interrupt */ - gfar_write(&priv->regs->ievent, IEVENT_RX_MASK); - - spin_lock_irqsave(&priv->rxlock, flags); - gfar_clean_rx_ring(dev, priv->rx_ring_size); - - /* If we are coalescing interrupts, update the timer */ - /* Otherwise, clear it */ - if (likely(priv->rxcoalescing)) { - gfar_write(&priv->regs->rxic, 0); - gfar_write(&priv->regs->rxic, - mk_ic_value(priv->rxcount, priv->rxtime)); - } - - spin_unlock_irqrestore(&priv->rxlock, flags); -#endif return IRQ_HANDLED; } -static inline int gfar_rx_vlan(struct sk_buff *skb, - struct vlan_group *vlgrp, unsigned short vlctl) -{ -#ifdef CONFIG_GFAR_NAPI - return vlan_hwaccel_receive_skb(skb, vlgrp, vlctl); -#else - return vlan_hwaccel_rx(skb, vlgrp, vlctl); -#endif -} - static inline void gfar_rx_checksum(struct sk_buff *skb, struct rxfcb *fcb) { /* If valid headers were found, and valid sums @@ -1539,10 +1592,11 @@ static int gfar_process_frame(struct net_device *dev, struct sk_buff *skb, skb->protocol = eth_type_trans(skb, dev); /* Send the packet up the stack */ - if (unlikely(priv->vlgrp && (fcb->flags & RXFCB_VLN))) - ret = gfar_rx_vlan(skb, priv->vlgrp, fcb->vlctl); - else - ret = RECEIVE(skb); + if (unlikely(priv->vlgrp && (fcb->flags & RXFCB_VLN))) { + ret = vlan_hwaccel_receive_skb(skb, priv->vlgrp, + fcb->vlctl); + } else + ret = netif_receive_skb(skb); if (NET_RX_DROP == ret) priv->extra_stats.kernel_dropped++; @@ -1629,7 +1683,6 @@ int gfar_clean_rx_ring(struct net_device *dev, int rx_work_limit) return howmany; } -#ifdef CONFIG_GFAR_NAPI static int gfar_poll(struct napi_struct *napi, int budget) { struct gfar_private *priv = container_of(napi, struct gfar_private, napi); @@ -1664,7 +1717,6 @@ static int gfar_poll(struct napi_struct *napi, int budget) return howmany; } -#endif #ifdef CONFIG_NET_POLL_CONTROLLER /* @@ -1784,7 +1836,6 @@ static void adjust_link(struct net_device *dev) if (!priv->oldlink) { new_state = 1; priv->oldlink = 1; - netif_schedule(dev); } } else if (priv->oldlink) { new_state = 1; @@ -1969,7 +2020,12 @@ static irqreturn_t gfar_error(int irq, void *dev_id) u32 events = gfar_read(&priv->regs->ievent); /* Clear IEVENT */ - gfar_write(&priv->regs->ievent, IEVENT_ERR_MASK); + gfar_write(&priv->regs->ievent, events & IEVENT_ERR_MASK); + + /* Magic Packet is not an error. */ + if ((priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) && + (events & IEVENT_MAG)) + events &= ~IEVENT_MAG; /* Hmm... */ if (netif_msg_rx_err(priv) || netif_msg_tx_err(priv)) @@ -2003,11 +2059,6 @@ static irqreturn_t gfar_error(int irq, void *dev_id) gfar_receive(irq, dev_id); -#ifndef CONFIG_GFAR_NAPI - /* Clear the halt bit in RSTAT */ - gfar_write(&priv->regs->rstat, RSTAT_CLEAR_RHALT); -#endif - if (netif_msg_rx_err(priv)) printk(KERN_DEBUG "%s: busy error (rstat: %x)\n", dev->name, gfar_read(&priv->regs->rstat)); @@ -2042,6 +2093,8 @@ MODULE_ALIAS("platform:fsl-gianfar"); static struct platform_driver gfar_driver = { .probe = gfar_probe, .remove = gfar_remove, + .suspend = gfar_suspend, + .resume = gfar_resume, .driver = { .name = "fsl-gianfar", .owner = THIS_MODULE, |