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Commit 0aa1538f authored by Francois Romieu's avatar Francois Romieu Committed by Jeff Garzik
Browse files

gianfar: delete non NAPI code from the driver. 



Compile-tested only.

Signed-off-by: default avatarFrancois Romieu <romieu@fr.zoreil.com>
Signed-off-by: default avatarJeff Garzik <jgarzik@redhat.com>
parent 32b0f53e

drivers/net/Kconfig

+0 −4
Original line number Diff line number Diff line
@@ -2262,10 +2262,6 @@ config GIANFAR 
	  This driver supports the Gigabit TSEC on the MPC83xx, MPC85xx,

	  and MPC86xx family of chips, and the FEC on the 8540.



config GFAR_NAPI

	bool "Use Rx Polling (NAPI)"

	depends on GIANFAR



config UCC_GETH

	tristate "Freescale QE Gigabit Ethernet"

	depends on QUICC_ENGINE

drivers/net/gianfar.c

+6 −70
Original line number Diff line number Diff line
@@ -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
@@ -260,9 +251,7 @@ 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 +352,7 @@ 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);
@@ -945,14 +930,10 @@ 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 +943,13 @@ 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 +1105,7 @@ 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);
@@ -1427,14 +1402,9 @@ 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 +1421,10 @@ 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 +1481,11 @@ 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 +1572,6 @@ 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 +1606,6 @@ static int gfar_poll(struct napi_struct *napi, int budget) 


	return howmany;

}

#endif



#ifdef CONFIG_NET_POLL_CONTROLLER

/*
@@ -2003,11 +1944,6 @@ 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));

drivers/net/gianfar.h

+0 −11
Original line number Diff line number Diff line
@@ -77,13 +77,8 @@ extern const char gfar_driver_name[]; 
extern const char gfar_driver_version[];



/* These need to be powers of 2 for this driver */

#ifdef CONFIG_GFAR_NAPI

#define DEFAULT_TX_RING_SIZE	256

#define DEFAULT_RX_RING_SIZE	256

#else

#define DEFAULT_TX_RING_SIZE    64

#define DEFAULT_RX_RING_SIZE    64

#endif



#define GFAR_RX_MAX_RING_SIZE   256

#define GFAR_TX_MAX_RING_SIZE   256
@@ -128,14 +123,8 @@ extern const char gfar_driver_version[]; 


#define DEFAULT_RXTIME	21



/* Non NAPI Case */

#ifndef CONFIG_GFAR_NAPI

#define DEFAULT_RX_COALESCE 1

#define DEFAULT_RXCOUNT	16

#else

#define DEFAULT_RX_COALESCE 0

#define DEFAULT_RXCOUNT	0

#endif /* CONFIG_GFAR_NAPI */



#define MIIMCFG_INIT_VALUE	0x00000007

#define MIIMCFG_RESET           0x80000000