* drivers/net/gianfar.c
*
* Gianfar Ethernet Driver
- * Driver for FEC on MPC8540 and TSEC on MPC8540/MPC8560
+ * This driver is designed for the non-CPM ethernet controllers
+ * on the 85xx and 83xx family of integrated processors
* Based on 8260_io/fcc_enet.c
*
* Author: Andy Fleming
- * Maintainer: Kumar Gala (kumar.gala@freescale.com)
+ * Maintainer: Kumar Gala
*
- * Copyright (c) 2002-2004 Freescale Semiconductor, Inc.
+ * Copyright (c) 2002-2006 Freescale Semiconductor, Inc.
+ * Copyright (c) 2007 MontaVista Software, Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* B-V +1.62
*
* Theory of operation
- * This driver is designed for the non-CPM ethernet controllers
- * on the 85xx and 83xx family of integrated processors
*
* The driver is initialized through platform_device. Structures which
* define the configuration needed by the board are defined in a
* 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
* The driver then cleans up the buffer.
*/
-#include <linux/config.h>
#include <linux/kernel.h>
-#include <linux/sched.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/unistd.h>
#include <linux/ip.h>
#include <linux/tcp.h>
#include <linux/udp.h>
+#include <linux/in.h>
#include <asm/io.h>
#include <asm/irq.h>
#include "gianfar_mii.h"
#define TX_TIMEOUT (1*HZ)
-#define SKB_ALLOC_TIMEOUT 1000000
#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[] = "1.2";
+const char gfar_driver_version[] = "1.3";
static int gfar_enet_open(struct net_device *dev);
static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev);
+static void gfar_reset_task(struct work_struct *work);
static void gfar_timeout(struct net_device *dev);
static int gfar_close(struct net_device *dev);
-struct sk_buff *gfar_new_skb(struct net_device *dev, struct rxbd8 *bdp);
-static struct net_device_stats *gfar_get_stats(struct net_device *dev);
+struct sk_buff *gfar_new_skb(struct net_device *dev);
+static void gfar_new_rxbdp(struct net_device *dev, struct rxbd8 *bdp,
+ struct sk_buff *skb);
static int gfar_set_mac_address(struct net_device *dev);
static int gfar_change_mtu(struct net_device *dev, int new_mtu);
-static irqreturn_t gfar_error(int irq, void *dev_id, struct pt_regs *regs);
-static irqreturn_t gfar_transmit(int irq, void *dev_id, struct pt_regs *regs);
-static irqreturn_t gfar_interrupt(int irq, void *dev_id, struct pt_regs *regs);
+static irqreturn_t gfar_error(int irq, void *dev_id);
+static irqreturn_t gfar_transmit(int irq, void *dev_id);
+static irqreturn_t gfar_interrupt(int irq, void *dev_id);
static void adjust_link(struct net_device *dev);
static void init_registers(struct net_device *dev);
static int init_phy(struct net_device *dev);
-static int gfar_probe(struct device *device);
-static int gfar_remove(struct device *device);
+static int gfar_probe(struct platform_device *pdev);
+static int gfar_remove(struct platform_device *pdev);
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);
-#ifdef CONFIG_GFAR_NAPI
-static int gfar_poll(struct net_device *dev, int *budget);
+static void gfar_configure_serdes(struct net_device *dev);
+static int gfar_poll(struct napi_struct *napi, int budget);
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void gfar_netpoll(struct net_device *dev);
#endif
int gfar_clean_rx_ring(struct net_device *dev, int rx_work_limit);
+static int gfar_clean_tx_ring(struct net_device *dev);
static int gfar_process_frame(struct net_device *dev, struct sk_buff *skb, int length);
static void gfar_vlan_rx_register(struct net_device *netdev,
struct vlan_group *grp);
-static void gfar_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid);
+void gfar_halt(struct net_device *dev);
+static void gfar_halt_nodisable(struct net_device *dev);
+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 struct ethtool_ops gfar_ethtool_ops;
+extern const struct ethtool_ops gfar_ethtool_ops;
MODULE_AUTHOR("Freescale Semiconductor, Inc");
MODULE_DESCRIPTION("Gianfar Ethernet Driver");
MODULE_LICENSE("GPL");
-int gfar_uses_fcb(struct gfar_private *priv)
+/* Returns 1 if incoming frames use an FCB */
+static inline int gfar_uses_fcb(struct gfar_private *priv)
{
- if (priv->vlan_enable || priv->rx_csum_enable)
- return 1;
- else
- return 0;
+ return (priv->vlan_enable || priv->rx_csum_enable);
}
/* Set up the ethernet device structure, private data,
* and anything else we need before we start */
-static int gfar_probe(struct device *device)
+static int gfar_probe(struct platform_device *pdev)
{
u32 tempval;
struct net_device *dev = NULL;
struct gfar_private *priv = NULL;
- struct platform_device *pdev = to_platform_device(device);
struct gianfar_platform_data *einfo;
struct resource *r;
- int idx;
int err = 0;
+ DECLARE_MAC_BUF(mac);
einfo = (struct gianfar_platform_data *) pdev->dev.platform_data;
return -ENOMEM;
priv = netdev_priv(dev);
+ priv->dev = dev;
/* Set the info in the priv to the current info */
priv->einfo = einfo;
priv->interruptTransmit = platform_get_irq_byname(pdev, "tx");
priv->interruptReceive = platform_get_irq_byname(pdev, "rx");
priv->interruptError = platform_get_irq_byname(pdev, "error");
+ if (priv->interruptTransmit < 0 || priv->interruptReceive < 0 || priv->interruptError < 0)
+ goto regs_fail;
} else {
priv->interruptTransmit = platform_get_irq(pdev, 0);
+ if (priv->interruptTransmit < 0)
+ goto regs_fail;
}
/* get a pointer to the register memory */
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- priv->regs = (struct gfar *)
- ioremap(r->start, sizeof (struct gfar));
+ priv->regs = ioremap(r->start, sizeof (struct gfar));
if (NULL == priv->regs) {
err = -ENOMEM;
goto regs_fail;
}
- spin_lock_init(&priv->lock);
+ spin_lock_init(&priv->txlock);
+ spin_lock_init(&priv->rxlock);
+ spin_lock_init(&priv->bflock);
+ INIT_WORK(&priv->reset_task, gfar_reset_task);
- dev_set_drvdata(device, dev);
+ platform_set_drvdata(pdev, dev);
/* Stop the DMA engine now, in case it was running before */
/* (The firmware could have used it, and left it running). */
/* Set the dev->base_addr to the gfar reg region */
dev->base_addr = (unsigned long) (priv->regs);
- SET_MODULE_OWNER(dev);
- SET_NETDEV_DEV(dev, device);
+ SET_NETDEV_DEV(dev, &pdev->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;
-#ifdef CONFIG_GFAR_NAPI
- dev->poll = gfar_poll;
- dev->weight = GFAR_DEV_WEIGHT;
+ 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->get_stats = gfar_get_stats;
dev->change_mtu = gfar_change_mtu;
dev->mtu = 1500;
dev->set_multicast_list = gfar_set_multi;
if (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_VLAN) {
dev->vlan_rx_register = gfar_vlan_rx_register;
- dev->vlan_rx_kill_vid = gfar_vlan_rx_kill_vid;
dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
else
priv->padding = 0;
- dev->hard_header_len += priv->padding;
-
if (dev->features & NETIF_F_IP_CSUM)
dev->hard_header_len += GMAC_FCB_LEN;
priv->rx_buffer_size = DEFAULT_RX_BUFFER_SIZE;
-#ifdef CONFIG_GFAR_BUFSTASH
- priv->rx_stash_size = STASH_LENGTH;
-#endif
priv->tx_ring_size = DEFAULT_TX_RING_SIZE;
priv->rx_ring_size = DEFAULT_RX_RING_SIZE;
goto register_fail;
}
+ /* Create all the sysfs files */
+ gfar_init_sysfs(dev);
+
/* Print out the device info */
- printk(KERN_INFO DEVICE_NAME, dev->name);
- for (idx = 0; idx < 6; idx++)
- printk("%2.2x%c", dev->dev_addr[idx], idx == 5 ? ' ' : ':');
- printk("\n");
+ printk(KERN_INFO DEVICE_NAME "%s\n",
+ dev->name, print_mac(mac, dev->dev_addr));
/* Even more device info helps when determining which kernel */
- /* provided which set of benchmarks. Since this is global for all */
- /* devices, we only print it once */
-#ifdef CONFIG_GFAR_NAPI
+ /* provided which set of benchmarks. */
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);
return 0;
register_fail:
- iounmap((void *) priv->regs);
+ iounmap(priv->regs);
regs_fail:
free_netdev(dev);
return err;
}
-static int gfar_remove(struct device *device)
+static int gfar_remove(struct platform_device *pdev)
{
- struct net_device *dev = dev_get_drvdata(device);
+ struct net_device *dev = platform_get_drvdata(pdev);
struct gfar_private *priv = netdev_priv(dev);
- dev_set_drvdata(device, NULL);
+ platform_set_drvdata(pdev, NULL);
- iounmap((void *) priv->regs);
+ iounmap(priv->regs);
free_netdev(dev);
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);
+
+ napi_disable(&priv->napi);
+
+ 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);
+
+ napi_enable(&priv->napi);
+
+ 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.
+ */
+static phy_interface_t gfar_get_interface(struct net_device *dev)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+ u32 ecntrl = gfar_read(&priv->regs->ecntrl);
+
+ if (ecntrl & ECNTRL_SGMII_MODE)
+ return PHY_INTERFACE_MODE_SGMII;
+
+ if (ecntrl & ECNTRL_TBI_MODE) {
+ if (ecntrl & ECNTRL_REDUCED_MODE)
+ return PHY_INTERFACE_MODE_RTBI;
+ else
+ return PHY_INTERFACE_MODE_TBI;
+ }
+
+ if (ecntrl & ECNTRL_REDUCED_MODE) {
+ if (ecntrl & ECNTRL_REDUCED_MII_MODE)
+ return PHY_INTERFACE_MODE_RMII;
+ else {
+ phy_interface_t interface = priv->einfo->interface;
+
+ /*
+ * This isn't autodetected right now, so it must
+ * be set by the device tree or platform code.
+ */
+ if (interface == PHY_INTERFACE_MODE_RGMII_ID)
+ return PHY_INTERFACE_MODE_RGMII_ID;
+
+ return PHY_INTERFACE_MODE_RGMII;
+ }
+ }
+
+ if (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_GIGABIT)
+ return PHY_INTERFACE_MODE_GMII;
+
+ return PHY_INTERFACE_MODE_MII;
+}
+
/* Initializes driver's PHY state, and attaches to the PHY.
* Returns 0 on success.
priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_GIGABIT ?
SUPPORTED_1000baseT_Full : 0;
struct phy_device *phydev;
+ char phy_id[BUS_ID_SIZE];
+ phy_interface_t interface;
priv->oldlink = 0;
priv->oldspeed = 0;
priv->oldduplex = -1;
- phydev = phy_connect(dev, priv->einfo->bus_id, &adjust_link, 0);
+ snprintf(phy_id, BUS_ID_SIZE, PHY_ID_FMT, priv->einfo->bus_id, priv->einfo->phy_id);
+
+ interface = gfar_get_interface(dev);
+
+ phydev = phy_connect(dev, phy_id, &adjust_link, 0, interface);
+
+ 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 0;
}
+/*
+ * Initialize TBI PHY interface for communicating with the
+ * SERDES lynx PHY on the chip. We communicate with this PHY
+ * through the MDIO bus on each controller, treating it as a
+ * "normal" PHY at the address found in the TBIPA register. We assume
+ * that the TBIPA register is valid. Either the MDIO bus code will set
+ * it to a value that doesn't conflict with other PHYs on the bus, or the
+ * value doesn't matter, as there are no other PHYs on the bus.
+ */
+static void gfar_configure_serdes(struct net_device *dev)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+ struct gfar_mii __iomem *regs =
+ (void __iomem *)&priv->regs->gfar_mii_regs;
+ int tbipa = gfar_read(&priv->regs->tbipa);
+
+ /* Single clk mode, mii mode off(for serdes communication) */
+ gfar_local_mdio_write(regs, tbipa, MII_TBICON, TBICON_CLK_SELECT);
+
+ gfar_local_mdio_write(regs, tbipa, MII_ADVERTISE,
+ ADVERTISE_1000XFULL | ADVERTISE_1000XPAUSE |
+ ADVERTISE_1000XPSE_ASYM);
+
+ gfar_local_mdio_write(regs, tbipa, MII_BMCR, BMCR_ANENABLE |
+ BMCR_ANRESTART | BMCR_FULLDPLX | BMCR_SPEED1000);
+}
+
static void init_registers(struct net_device *dev)
{
struct gfar_private *priv = netdev_priv(dev);
/* Zero out the rmon mib registers if it has them */
if (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_RMON) {
- memset((void *) &(priv->regs->rmon), 0,
- sizeof (struct rmon_mib));
+ memset_io(&(priv->regs->rmon), 0, sizeof (struct rmon_mib));
/* Mask off the CAM interrupts */
gfar_write(&priv->regs->rmon.cam1, 0xffffffff);
/* Initialize the max receive buffer length */
gfar_write(&priv->regs->mrblr, priv->rx_buffer_size);
-#ifdef CONFIG_GFAR_BUFSTASH
- /* If we are stashing buffers, we need to set the
- * extraction length to the size of the buffer */
- gfar_write(&priv->regs->attreli, priv->rx_stash_size << 16);
-#endif
-
/* Initialize the Minimum Frame Length Register */
gfar_write(&priv->regs->minflr, MINFLR_INIT_SETTINGS);
-
- /* Setup Attributes so that snooping is on for rx */
- gfar_write(&priv->regs->attr, ATTR_INIT_SETTINGS);
- gfar_write(&priv->regs->attreli, ATTRELI_INIT_SETTINGS);
-
- /* Assign the TBI an address which won't conflict with the PHYs */
- gfar_write(&priv->regs->tbipa, TBIPA_VALUE);
}
/* 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 *regs = priv->regs;
+ struct gfar __iomem *regs = priv->regs;
u32 tempval;
/* Mask all interrupts */
(IEVENT_GRSC | IEVENT_GTSC)))
cpu_relax();
}
+}
+
+/* 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;
+
+ gfar_halt_nodisable(dev);
/* Disable Rx and Tx */
tempval = gfar_read(®s->maccfg1);
void stop_gfar(struct net_device *dev)
{
struct gfar_private *priv = netdev_priv(dev);
- struct gfar *regs = priv->regs;
+ struct gfar __iomem *regs = priv->regs;
unsigned long flags;
phy_stop(priv->phydev);
/* Lock it down */
- spin_lock_irqsave(&priv->lock, flags);
+ spin_lock_irqsave(&priv->txlock, flags);
+ spin_lock(&priv->rxlock);
gfar_halt(dev);
- spin_unlock_irqrestore(&priv->lock, flags);
+ spin_unlock(&priv->rxlock);
+ spin_unlock_irqrestore(&priv->txlock, flags);
/* Free the IRQs */
if (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_MULTI_INTR) {
free_skb_resources(priv);
- dma_free_coherent(NULL,
+ dma_free_coherent(&dev->dev,
sizeof(struct txbd8)*priv->tx_ring_size
+ sizeof(struct rxbd8)*priv->rx_ring_size,
priv->tx_bd_base,
for (i = 0; i < priv->tx_ring_size; i++) {
if (priv->tx_skbuff[i]) {
- dma_unmap_single(NULL, txbdp->bufPtr,
+ dma_unmap_single(&priv->dev->dev, txbdp->bufPtr,
txbdp->length,
DMA_TO_DEVICE);
dev_kfree_skb_any(priv->tx_skbuff[i]);
priv->tx_skbuff[i] = NULL;
}
+
+ txbdp++;
}
kfree(priv->tx_skbuff);
if(priv->rx_skbuff != NULL) {
for (i = 0; i < priv->rx_ring_size; i++) {
if (priv->rx_skbuff[i]) {
- dma_unmap_single(NULL, rxbdp->bufPtr,
- priv->rx_buffer_size
- + RXBUF_ALIGNMENT,
+ dma_unmap_single(&priv->dev->dev, rxbdp->bufPtr,
+ priv->rx_buffer_size,
DMA_FROM_DEVICE);
dev_kfree_skb_any(priv->rx_skbuff[i]);
void gfar_start(struct net_device *dev)
{
struct gfar_private *priv = netdev_priv(dev);
- struct gfar *regs = priv->regs;
+ struct gfar __iomem *regs = priv->regs;
u32 tempval;
/* Enable Rx and Tx in MACCFG1 */
tempval |= DMACTRL_INIT_SETTINGS;
gfar_write(&priv->regs->dmactrl, tempval);
- /* Clear THLT, so that the DMA starts polling now */
- gfar_write(®s->tstat, TSTAT_CLEAR_THALT);
-
/* Make sure we aren't stopped */
tempval = gfar_read(&priv->regs->dmactrl);
tempval &= ~(DMACTRL_GRS | DMACTRL_GTS);
gfar_write(&priv->regs->dmactrl, tempval);
+ /* Clear THLT/RHLT, so that the DMA starts polling now */
+ gfar_write(®s->tstat, TSTAT_CLEAR_THALT);
+ gfar_write(®s->rstat, RSTAT_CLEAR_RHALT);
+
/* Unmask the interrupts we look for */
gfar_write(®s->imask, IMASK_DEFAULT);
}
{
struct txbd8 *txbdp;
struct rxbd8 *rxbdp;
- dma_addr_t addr;
+ dma_addr_t addr = 0;
unsigned long vaddr;
int i;
struct gfar_private *priv = netdev_priv(dev);
- struct gfar *regs = priv->regs;
+ struct gfar __iomem *regs = priv->regs;
int err = 0;
u32 rctrl = 0;
+ u32 attrs = 0;
gfar_write(®s->imask, IMASK_INIT_CLEAR);
/* Allocate memory for the buffer descriptors */
- vaddr = (unsigned long) dma_alloc_coherent(NULL,
+ 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);
rxbdp = priv->rx_bd_base;
for (i = 0; i < priv->rx_ring_size; i++) {
- struct sk_buff *skb = NULL;
+ struct sk_buff *skb;
- rxbdp->status = 0;
+ skb = gfar_new_skb(dev);
- skb = gfar_new_skb(dev, rxbdp);
+ 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++;
}
if (priv->rx_csum_enable)
rctrl |= RCTRL_CHECKSUMMING;
- if (priv->extended_hash)
+ if (priv->extended_hash) {
rctrl |= RCTRL_EXTHASH;
+ gfar_clear_exact_match(dev);
+ rctrl |= RCTRL_EMEN;
+ }
+
if (priv->vlan_enable)
rctrl |= RCTRL_VLAN;
+ 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);
return 0;
tx_irq_fail:
free_irq(priv->interruptError, dev);
err_irq_fail:
+err_rxalloc_fail:
rx_skb_fail:
free_skb_resources(priv);
tx_skb_fail:
- dma_free_coherent(NULL,
+ dma_free_coherent(&dev->dev,
sizeof(struct txbd8)*priv->tx_ring_size
+ sizeof(struct rxbd8)*priv->rx_ring_size,
priv->tx_bd_base,
/* Returns 0 for success. */
static int gfar_enet_open(struct net_device *dev)
{
+ struct gfar_private *priv = netdev_priv(dev);
int err;
+ napi_enable(&priv->napi);
+
/* Initialize a bunch of registers */
init_registers(dev);
err = init_phy(dev);
- if(err)
+ if(err) {
+ napi_disable(&priv->napi);
return err;
+ }
err = startup_gfar(dev);
+ if (err) {
+ napi_disable(&priv->napi);
+ return err;
+ }
netif_start_queue(dev);
return err;
}
-static struct txfcb *gfar_add_fcb(struct sk_buff *skb, struct txbd8 *bdp)
+static inline struct txfcb *gfar_add_fcb(struct sk_buff *skb, struct txbd8 *bdp)
{
struct txfcb *fcb = (struct txfcb *)skb_push (skb, GMAC_FCB_LEN);
memset(fcb, 0, GMAC_FCB_LEN);
- /* Flag the bd so the controller looks for the FCB */
- bdp->status |= TXBD_TOE;
-
return fcb;
}
static inline void gfar_tx_checksum(struct sk_buff *skb, struct txfcb *fcb)
{
- int len;
+ u8 flags = 0;
/* If we're here, it's a IP packet with a TCP or UDP
* payload. We set it to checksum, using a pseudo-header
* we provide
*/
- fcb->ip = 1;
- fcb->tup = 1;
- fcb->ctu = 1;
- fcb->nph = 1;
+ flags = TXFCB_DEFAULT;
- /* Notify the controller what the protocol is */
- if (skb->nh.iph->protocol == IPPROTO_UDP)
- fcb->udp = 1;
+ /* Tell the controller what the protocol is */
+ /* And provide the already calculated phcs */
+ if (ip_hdr(skb)->protocol == IPPROTO_UDP) {
+ flags |= TXFCB_UDP;
+ fcb->phcs = udp_hdr(skb)->check;
+ } else
+ fcb->phcs = tcp_hdr(skb)->check;
/* l3os is the distance between the start of the
* frame (skb->data) and the start of the IP hdr.
* l4os is the distance between the start of the
* l3 hdr and the l4 hdr */
- fcb->l3os = (u16)(skb->nh.raw - skb->data - GMAC_FCB_LEN);
- fcb->l4os = (u16)(skb->h.raw - skb->nh.raw);
-
- len = skb->nh.iph->tot_len - fcb->l4os;
+ fcb->l3os = (u16)(skb_network_offset(skb) - GMAC_FCB_LEN);
+ fcb->l4os = skb_network_header_len(skb);
- /* Provide the pseudoheader csum */
- fcb->phcs = ~csum_tcpudp_magic(skb->nh.iph->saddr,
- skb->nh.iph->daddr, len,
- skb->nh.iph->protocol, 0);
+ fcb->flags = flags;
}
-void gfar_tx_vlan(struct sk_buff *skb, struct txfcb *fcb)
+void inline gfar_tx_vlan(struct sk_buff *skb, struct txfcb *fcb)
{
- fcb->vln = 1;
+ fcb->flags |= TXFCB_VLN;
fcb->vlctl = vlan_tx_tag_get(skb);
}
struct gfar_private *priv = netdev_priv(dev);
struct txfcb *fcb = NULL;
struct txbd8 *txbdp;
+ u16 status;
+ unsigned long flags;
/* Update transmit stats */
- priv->stats.tx_bytes += skb->len;
+ dev->stats.tx_bytes += skb->len;
/* Lock priv now */
- spin_lock_irq(&priv->lock);
+ spin_lock_irqsave(&priv->txlock, flags);
/* Point at the first free tx descriptor */
txbdp = priv->cur_tx;
/* Clear all but the WRAP status flags */
- txbdp->status &= TXBD_WRAP;
+ status = txbdp->status & TXBD_WRAP;
/* Set up checksumming */
- if ((dev->features & NETIF_F_IP_CSUM)
- && (CHECKSUM_HW == skb->ip_summed)) {
+ if (likely((dev->features & NETIF_F_IP_CSUM)
+ && (CHECKSUM_PARTIAL == skb->ip_summed))) {
fcb = gfar_add_fcb(skb, txbdp);
+ status |= TXBD_TOE;
gfar_tx_checksum(skb, fcb);
}
if (priv->vlan_enable &&
unlikely(priv->vlgrp && vlan_tx_tag_present(skb))) {
- if (NULL == fcb)
+ if (unlikely(NULL == fcb)) {
fcb = gfar_add_fcb(skb, txbdp);
+ status |= TXBD_TOE;
+ }
gfar_tx_vlan(skb, fcb);
}
/* Set buffer length and pointer */
txbdp->length = skb->len;
- txbdp->bufPtr = dma_map_single(NULL, skb->data,
+ txbdp->bufPtr = dma_map_single(&dev->dev, skb->data,
skb->len, DMA_TO_DEVICE);
/* Save the skb pointer so we can free it later */
(priv->skb_curtx + 1) & TX_RING_MOD_MASK(priv->tx_ring_size);
/* Flag the BD as interrupt-causing */
- txbdp->status |= TXBD_INTERRUPT;
+ status |= TXBD_INTERRUPT;
/* Flag the BD as ready to go, last in frame, and */
/* in need of CRC */
- txbdp->status |= (TXBD_READY | TXBD_LAST | TXBD_CRC);
+ status |= (TXBD_READY | TXBD_LAST | TXBD_CRC);
dev->trans_start = jiffies;
+ /* The powerpc-specific eieio() is used, as wmb() has too strong
+ * semantics (it requires synchronization between cacheable and
+ * uncacheable mappings, which eieio doesn't provide and which we
+ * don't need), thus requiring a more expensive sync instruction. At
+ * some point, the set of architecture-independent barrier functions
+ * should be expanded to include weaker barriers.
+ */
+
+ eieio();
+ txbdp->status = status;
+
/* If this was the last BD in the ring, the next one */
/* is at the beginning of the ring */
if (txbdp->status & TXBD_WRAP)
if (txbdp == priv->dirty_tx) {
netif_stop_queue(dev);
- priv->stats.tx_fifo_errors++;
+ dev->stats.tx_fifo_errors++;
}
/* Update the current txbd to the next one */
gfar_write(&priv->regs->tstat, TSTAT_CLEAR_THALT);
/* Unlock priv */
- spin_unlock_irq(&priv->lock);
+ spin_unlock_irqrestore(&priv->txlock, flags);
return 0;
}
static int gfar_close(struct net_device *dev)
{
struct gfar_private *priv = netdev_priv(dev);
+
+ napi_disable(&priv->napi);
+
+ cancel_work_sync(&priv->reset_task);
stop_gfar(dev);
/* Disconnect from the PHY */
return 0;
}
-/* returns a net_device_stats structure pointer */
-static struct net_device_stats * gfar_get_stats(struct net_device *dev)
-{
- struct gfar_private *priv = netdev_priv(dev);
-
- return &(priv->stats);
-}
-
/* Changes the mac address if the controller is not running. */
-int gfar_set_mac_address(struct net_device *dev)
+static int gfar_set_mac_address(struct net_device *dev)
{
- struct gfar_private *priv = netdev_priv(dev);
- int i;
- char tmpbuf[MAC_ADDR_LEN];
- u32 tempval;
-
- /* Now copy it into the mac registers backwards, cuz */
- /* little endian is silly */
- for (i = 0; i < MAC_ADDR_LEN; i++)
- tmpbuf[MAC_ADDR_LEN - 1 - i] = dev->dev_addr[i];
-
- gfar_write(&priv->regs->macstnaddr1, *((u32 *) (tmpbuf)));
-
- tempval = *((u32 *) (tmpbuf + 4));
-
- gfar_write(&priv->regs->macstnaddr2, tempval);
+ gfar_set_mac_for_addr(dev, 0, dev->dev_addr);
return 0;
}
unsigned long flags;
u32 tempval;
- spin_lock_irqsave(&priv->lock, flags);
+ spin_lock_irqsave(&priv->rxlock, flags);
priv->vlgrp = grp;
tempval |= TCTRL_VLINS;
gfar_write(&priv->regs->tctrl, tempval);
-
+
/* Enable VLAN tag extraction */
tempval = gfar_read(&priv->regs->rctrl);
tempval |= RCTRL_VLEX;
gfar_write(&priv->regs->rctrl, tempval);
}
- spin_unlock_irqrestore(&priv->lock, flags);
+ spin_unlock_irqrestore(&priv->rxlock, flags);
}
-
-static void gfar_vlan_rx_kill_vid(struct net_device *dev, uint16_t vid)
-{
- struct gfar_private *priv = netdev_priv(dev);
- unsigned long flags;
-
- spin_lock_irqsave(&priv->lock, flags);
-
- if (priv->vlgrp)
- priv->vlgrp->vlan_devices[vid] = NULL;
-
- spin_unlock_irqrestore(&priv->lock, flags);
-}
-
-
static int gfar_change_mtu(struct net_device *dev, int new_mtu)
{
int tempsize, tempval;
int frame_size = new_mtu + ETH_HLEN;
if (priv->vlan_enable)
- frame_size += VLAN_ETH_HLEN;
+ frame_size += VLAN_HLEN;
if (gfar_uses_fcb(priv))
frame_size += GMAC_FCB_LEN;
INCREMENTAL_BUFFER_SIZE;
/* Only stop and start the controller if it isn't already
- * stopped */
+ * stopped, and we changed something */
if ((oldsize != tempsize) && (dev->flags & IFF_UP))
stop_gfar(dev);
return 0;
}
-/* gfar_timeout gets called when a packet has not been
+/* gfar_reset_task gets scheduled when a packet has not been
* transmitted after a set amount of time.
* For now, assume that clearing out all the structures, and
- * starting over will fix the problem. */
-static void gfar_timeout(struct net_device *dev)
+ * starting over will fix the problem.
+ */
+static void gfar_reset_task(struct work_struct *work)
{
- struct gfar_private *priv = netdev_priv(dev);
-
- priv->stats.tx_errors++;
+ struct gfar_private *priv = container_of(work, struct gfar_private,
+ reset_task);
+ struct net_device *dev = priv->dev;
if (dev->flags & IFF_UP) {
stop_gfar(dev);
startup_gfar(dev);
}
- netif_schedule(dev);
+ netif_tx_schedule_all(dev);
}
-/* Interrupt Handler for Transmit complete */
-static irqreturn_t gfar_transmit(int irq, void *dev_id, struct pt_regs *regs)
+static void gfar_timeout(struct net_device *dev)
{
- struct net_device *dev = (struct net_device *) dev_id;
struct gfar_private *priv = netdev_priv(dev);
- struct txbd8 *bdp;
- /* Clear IEVENT */
- gfar_write(&priv->regs->ievent, IEVENT_TX_MASK);
+ dev->stats.tx_errors++;
+ schedule_work(&priv->reset_task);
+}
+
+/* Interrupt Handler for Transmit complete */
+static int gfar_clean_tx_ring(struct net_device *dev)
+{
+ struct txbd8 *bdp;
+ struct gfar_private *priv = netdev_priv(dev);
+ int howmany = 0;
- /* Lock priv */
- spin_lock(&priv->lock);
bdp = priv->dirty_tx;
while ((bdp->status & TXBD_READY) == 0) {
/* If dirty_tx and cur_tx are the same, then either the */
if ((bdp == priv->cur_tx) && (netif_queue_stopped(dev) == 0))
break;
- priv->stats.tx_packets++;
+ howmany++;
/* Deferred means some collisions occurred during transmit, */
/* but we eventually sent the packet. */
if (bdp->status & TXBD_DEF)
- priv->stats.collisions++;
+ dev->stats.collisions++;
/* Free the sk buffer associated with this TxBD */
dev_kfree_skb_irq(priv->tx_skbuff[priv->skb_dirtytx]);
+
priv->tx_skbuff[priv->skb_dirtytx] = NULL;
priv->skb_dirtytx =
(priv->skb_dirtytx +
1) & TX_RING_MOD_MASK(priv->tx_ring_size);
+ /* Clean BD length for empty detection */
+ bdp->length = 0;
+
/* update bdp to point at next bd in the ring (wrapping if necessary) */
if (bdp->status & TXBD_WRAP)
bdp = priv->tx_bd_base;
netif_wake_queue(dev);
} /* while ((bdp->status & TXBD_READY) == 0) */
+ dev->stats.tx_packets += howmany;
+
+ return howmany;
+}
+
+/* Interrupt Handler for Transmit complete */
+static irqreturn_t gfar_transmit(int irq, void *dev_id)
+{
+ struct net_device *dev = (struct net_device *) dev_id;
+ struct gfar_private *priv = netdev_priv(dev);
+
+ /* Clear IEVENT */
+ gfar_write(&priv->regs->ievent, IEVENT_TX_MASK);
+
+ /* Lock priv */
+ spin_lock(&priv->txlock);
+
+ gfar_clean_tx_ring(dev);
+
/* If we are coalescing the interrupts, reset the timer */
/* Otherwise, clear it */
- if (priv->txcoalescing)
+ if (likely(priv->txcoalescing)) {
+ gfar_write(&priv->regs->txic, 0);
gfar_write(&priv->regs->txic,
mk_ic_value(priv->txcount, priv->txtime));
- else
- gfar_write(&priv->regs->txic, 0);
+ }
- spin_unlock(&priv->lock);
+ spin_unlock(&priv->txlock);
return IRQ_HANDLED;
}
-struct sk_buff * gfar_new_skb(struct net_device *dev, struct rxbd8 *bdp)
+static void gfar_new_rxbdp(struct net_device *dev, struct rxbd8 *bdp,
+ struct sk_buff *skb)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+ u32 * status_len = (u32 *)bdp;
+ u16 flags;
+
+ bdp->bufPtr = dma_map_single(&dev->dev, skb->data,
+ priv->rx_buffer_size, DMA_FROM_DEVICE);
+
+ flags = RXBD_EMPTY | RXBD_INTERRUPT;
+
+ if (bdp == priv->rx_bd_base + priv->rx_ring_size - 1)
+ flags |= RXBD_WRAP;
+
+ eieio();
+
+ *status_len = (u32)flags << 16;
+}
+
+
+struct sk_buff * gfar_new_skb(struct net_device *dev)
{
+ unsigned int alignamount;
struct gfar_private *priv = netdev_priv(dev);
struct sk_buff *skb = NULL;
- unsigned int timeout = SKB_ALLOC_TIMEOUT;
/* We have to allocate the skb, so keep trying till we succeed */
- while ((!skb) && timeout--)
- skb = dev_alloc_skb(priv->rx_buffer_size + RXBUF_ALIGNMENT);
+ skb = netdev_alloc_skb(dev, priv->rx_buffer_size + RXBUF_ALIGNMENT);
- if (NULL == skb)
+ if (!skb)
return NULL;
+ alignamount = RXBUF_ALIGNMENT -
+ (((unsigned long) skb->data) & (RXBUF_ALIGNMENT - 1));
+
/* We need the data buffer to be aligned properly. We will reserve
* as many bytes as needed to align the data properly
*/
- skb_reserve(skb,
- RXBUF_ALIGNMENT -
- (((unsigned) skb->data) & (RXBUF_ALIGNMENT - 1)));
-
- skb->dev = dev;
-
- bdp->bufPtr = dma_map_single(NULL, skb->data,
- priv->rx_buffer_size + RXBUF_ALIGNMENT,
- DMA_FROM_DEVICE);
-
- bdp->length = 0;
-
- /* Mark the buffer empty */
- bdp->status |= (RXBD_EMPTY | RXBD_INTERRUPT);
+ skb_reserve(skb, alignamount);
return skb;
}
-static inline void count_errors(unsigned short status, struct gfar_private *priv)
+static inline void count_errors(unsigned short status, struct net_device *dev)
{
- struct net_device_stats *stats = &priv->stats;
+ struct gfar_private *priv = netdev_priv(dev);
+ struct net_device_stats *stats = &dev->stats;
struct gfar_extra_stats *estats = &priv->extra_stats;
/* If the packet was truncated, none of the other errors
}
}
-irqreturn_t gfar_receive(int irq, void *dev_id, struct pt_regs *regs)
+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;
-#endif
-
- /* Clear IEVENT, so rx interrupt isn't called again
- * because of this interrupt */
- gfar_write(&priv->regs->ievent, IEVENT_RX_MASK);
/* support NAPI */
-#ifdef CONFIG_GFAR_NAPI
- if (netif_rx_schedule_prep(dev)) {
+ /* Clear IEVENT, so interrupts aren't called again
+ * because of the packets that have already arrived */
+ gfar_write(&priv->regs->ievent, IEVENT_RTX_MASK);
+
+ if (netif_rx_schedule_prep(dev, &priv->napi)) {
tempval = gfar_read(&priv->regs->imask);
- tempval &= IMASK_RX_DISABLED;
+ tempval &= IMASK_RTX_DISABLED;
gfar_write(&priv->regs->imask, tempval);
- __netif_rx_schedule(dev);
+ __netif_rx_schedule(dev, &priv->napi);
} else {
if (netif_msg_rx_err(priv))
printk(KERN_DEBUG "%s: receive called twice (%x)[%x]\n",
dev->name, gfar_read(&priv->regs->ievent),
gfar_read(&priv->regs->imask));
}
-#else
-
- spin_lock(&priv->lock);
- gfar_clean_rx_ring(dev, priv->rx_ring_size);
-
- /* If we are coalescing interrupts, update the timer */
- /* Otherwise, clear it */
- if (priv->rxcoalescing)
- gfar_write(&priv->regs->rxic,
- mk_ic_value(priv->rxcount, priv->rxtime));
- else
- gfar_write(&priv->regs->rxic, 0);
-
- spin_unlock(&priv->lock);
-#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
* were verified, then we tell the kernel that no
* checksumming is necessary. Otherwise, it is */
- if (fcb->cip && !fcb->eip && fcb->ctu && !fcb->etu)
+ if ((fcb->flags & RXFCB_CSUM_MASK) == (RXFCB_CIP | RXFCB_CTU))
skb->ip_summed = CHECKSUM_UNNECESSARY;
else
skb->ip_summed = CHECKSUM_NONE;
if (NULL == skb) {
if (netif_msg_rx_err(priv))
printk(KERN_WARNING "%s: Missing skb!!.\n", dev->name);
- priv->stats.rx_dropped++;
+ dev->stats.rx_dropped++;
priv->extra_stats.rx_skbmissing++;
} else {
int ret;
skb->protocol = eth_type_trans(skb, dev);
/* Send the packet up the stack */
- if (unlikely(priv->vlgrp && fcb->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++;
bdp = priv->cur_rx;
while (!((bdp->status & RXBD_EMPTY) || (--rx_work_limit < 0))) {
+ struct sk_buff *newskb;
+ rmb();
+
+ /* Add another skb for the future */
+ newskb = gfar_new_skb(dev);
+
skb = priv->rx_skbuff[priv->skb_currx];
- if (!(bdp->status &
- (RXBD_LARGE | RXBD_SHORT | RXBD_NONOCTET
- | RXBD_CRCERR | RXBD_OVERRUN | RXBD_TRUNCATED))) {
+ /* We drop the frame if we failed to allocate a new buffer */
+ if (unlikely(!newskb || !(bdp->status & RXBD_LAST) ||
+ bdp->status & RXBD_ERR)) {
+ count_errors(bdp->status, dev);
+
+ if (unlikely(!newskb))
+ newskb = skb;
+
+ if (skb) {
+ dma_unmap_single(&priv->dev->dev,
+ bdp->bufPtr,
+ priv->rx_buffer_size,
+ DMA_FROM_DEVICE);
+
+ dev_kfree_skb_any(skb);
+ }
+ } else {
/* Increment the number of packets */
- priv->stats.rx_packets++;
+ dev->stats.rx_packets++;
howmany++;
/* Remove the FCS from the packet length */
gfar_process_frame(dev, skb, pkt_len);
- priv->stats.rx_bytes += pkt_len;
- } else {
- count_errors(bdp->status, priv);
-
- if (skb)
- dev_kfree_skb_any(skb);
-
- priv->rx_skbuff[priv->skb_currx] = NULL;
+ dev->stats.rx_bytes += pkt_len;
}
dev->last_rx = jiffies;
- /* Clear the status flags for this buffer */
- bdp->status &= ~RXBD_STATS;
+ priv->rx_skbuff[priv->skb_currx] = newskb;
- /* Add another skb for the future */
- skb = gfar_new_skb(dev, bdp);
- priv->rx_skbuff[priv->skb_currx] = skb;
+ /* Setup the new bdp */
+ gfar_new_rxbdp(dev, bdp, newskb);
/* Update to the next pointer */
if (bdp->status & RXBD_WRAP)
/* update to point at the next skb */
priv->skb_currx =
- (priv->skb_currx +
- 1) & RX_RING_MOD_MASK(priv->rx_ring_size);
-
+ (priv->skb_currx + 1) &
+ RX_RING_MOD_MASK(priv->rx_ring_size);
}
/* Update the current rxbd pointer to be the next one */
priv->cur_rx = bdp;
- /* If no packets have arrived since the
- * last one we processed, clear the IEVENT RX and
- * BSY bits so that another interrupt won't be
- * generated when we set IMASK */
- if (bdp->status & RXBD_EMPTY)
- gfar_write(&priv->regs->ievent, IEVENT_RX_MASK);
-
return howmany;
}
-#ifdef CONFIG_GFAR_NAPI
-static int gfar_poll(struct net_device *dev, int *budget)
+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;
int howmany;
- struct gfar_private *priv = netdev_priv(dev);
- int rx_work_limit = *budget;
-
- if (rx_work_limit > dev->quota)
- rx_work_limit = dev->quota;
+ unsigned long flags;
- howmany = gfar_clean_rx_ring(dev, rx_work_limit);
+ /* If we fail to get the lock, don't bother with the TX BDs */
+ if (spin_trylock_irqsave(&priv->txlock, flags)) {
+ gfar_clean_tx_ring(dev);
+ spin_unlock_irqrestore(&priv->txlock, flags);
+ }
- dev->quota -= howmany;
- rx_work_limit -= howmany;
- *budget -= howmany;
+ howmany = gfar_clean_rx_ring(dev, budget);
- if (rx_work_limit >= 0) {
- netif_rx_complete(dev);
+ if (howmany < budget) {
+ netif_rx_complete(dev, napi);
/* Clear the halt bit in RSTAT */
gfar_write(&priv->regs->rstat, RSTAT_CLEAR_RHALT);
/* If we are coalescing interrupts, update the timer */
/* Otherwise, clear it */
- if (priv->rxcoalescing)
+ if (likely(priv->rxcoalescing)) {
+ gfar_write(&priv->regs->rxic, 0);
gfar_write(&priv->regs->rxic,
mk_ic_value(priv->rxcount, priv->rxtime));
- else
- gfar_write(&priv->regs->rxic, 0);
+ }
}
- return (rx_work_limit < 0) ? 1 : 0;
+ return howmany;
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+/*
+ * Polling 'interrupt' - used by things like netconsole to send skbs
+ * without having to re-enable interrupts. It's not called while
+ * the interrupt routine is executing.
+ */
+static void gfar_netpoll(struct net_device *dev)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+
+ /* If the device has multiple interrupts, run tx/rx */
+ if (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_MULTI_INTR) {
+ disable_irq(priv->interruptTransmit);
+ disable_irq(priv->interruptReceive);
+ disable_irq(priv->interruptError);
+ gfar_interrupt(priv->interruptTransmit, dev);
+ enable_irq(priv->interruptError);
+ enable_irq(priv->interruptReceive);
+ enable_irq(priv->interruptTransmit);
+ } else {
+ disable_irq(priv->interruptTransmit);
+ gfar_interrupt(priv->interruptTransmit, dev);
+ enable_irq(priv->interruptTransmit);
+ }
}
#endif
/* The interrupt handler for devices with one interrupt */
-static irqreturn_t gfar_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t gfar_interrupt(int irq, void *dev_id)
{
struct net_device *dev = dev_id;
struct gfar_private *priv = netdev_priv(dev);
/* Save ievent for future reference */
u32 events = gfar_read(&priv->regs->ievent);
- /* Clear IEVENT */
- gfar_write(&priv->regs->ievent, events);
-
/* Check for reception */
- if ((events & IEVENT_RXF0) || (events & IEVENT_RXB0))
- gfar_receive(irq, dev_id, regs);
+ if (events & IEVENT_RX_MASK)
+ gfar_receive(irq, dev_id);
/* Check for transmit completion */
- if ((events & IEVENT_TXF) || (events & IEVENT_TXB))
- gfar_transmit(irq, dev_id, regs);
-
- /* Update error statistics */
- if (events & IEVENT_TXE) {
- priv->stats.tx_errors++;
-
- if (events & IEVENT_LC)
- priv->stats.tx_window_errors++;
- if (events & IEVENT_CRL)
- priv->stats.tx_aborted_errors++;
- if (events & IEVENT_XFUN) {
- if (netif_msg_tx_err(priv))
- printk(KERN_WARNING "%s: tx underrun. dropped packet\n", dev->name);
- priv->stats.tx_dropped++;
- priv->extra_stats.tx_underrun++;
-
- /* Reactivate the Tx Queues */
- gfar_write(&priv->regs->tstat, TSTAT_CLEAR_THALT);
- }
- }
- if (events & IEVENT_BSY) {
- priv->stats.rx_errors++;
- priv->extra_stats.rx_bsy++;
-
- gfar_receive(irq, dev_id, regs);
-
-#ifndef CONFIG_GFAR_NAPI
- /* Clear the halt bit in RSTAT */
- gfar_write(&priv->regs->rstat, RSTAT_CLEAR_RHALT);
-#endif
+ if (events & IEVENT_TX_MASK)
+ gfar_transmit(irq, dev_id);
- if (netif_msg_rx_err(priv))
- printk(KERN_DEBUG "%s: busy error (rhalt: %x)\n",
- dev->name,
- gfar_read(&priv->regs->rstat));
- }
- if (events & IEVENT_BABR) {
- priv->stats.rx_errors++;
- priv->extra_stats.rx_babr++;
-
- if (netif_msg_rx_err(priv))
- printk(KERN_DEBUG "%s: babbling error\n", dev->name);
- }
- if (events & IEVENT_EBERR) {
- priv->extra_stats.eberr++;
- if (netif_msg_rx_err(priv))
- printk(KERN_DEBUG "%s: EBERR\n", dev->name);
- }
- if ((events & IEVENT_RXC) && (netif_msg_rx_err(priv)))
- printk(KERN_DEBUG "%s: control frame\n", dev->name);
-
- if (events & IEVENT_BABT) {
- priv->extra_stats.tx_babt++;
- if (netif_msg_rx_err(priv))
- printk(KERN_DEBUG "%s: babt error\n", dev->name);
- }
+ /* Check for errors */
+ if (events & IEVENT_ERR_MASK)
+ gfar_error(irq, dev_id);
return IRQ_HANDLED;
}
static void adjust_link(struct net_device *dev)
{
struct gfar_private *priv = netdev_priv(dev);
- struct gfar *regs = priv->regs;
+ struct gfar __iomem *regs = priv->regs;
unsigned long flags;
struct phy_device *phydev = priv->phydev;
int new_state = 0;
- spin_lock_irqsave(&priv->lock, flags);
+ spin_lock_irqsave(&priv->txlock, flags);
if (phydev->link) {
u32 tempval = gfar_read(®s->maccfg2);
+ u32 ecntrl = gfar_read(®s->ecntrl);
/* Now we make sure that we can be in full duplex mode.
* If not, we operate in half-duplex mode. */
case 10:
tempval =
((tempval & ~(MACCFG2_IF)) | MACCFG2_MII);
+
+ /* Reduced mode distinguishes
+ * between 10 and 100 */
+ if (phydev->speed == SPEED_100)
+ ecntrl |= ECNTRL_R100;
+ else
+ ecntrl &= ~(ECNTRL_R100);
break;
default:
if (netif_msg_link(priv))
}
gfar_write(®s->maccfg2, tempval);
+ gfar_write(®s->ecntrl, ecntrl);
if (!priv->oldlink) {
new_state = 1;
priv->oldlink = 1;
- netif_schedule(dev);
}
} else if (priv->oldlink) {
new_state = 1;
if (new_state && netif_msg_link(priv))
phy_print_status(phydev);
- spin_unlock_irqrestore(&priv->lock, flags);
+ spin_unlock_irqrestore(&priv->txlock, flags);
}
/* Update the hash table based on the current list of multicast
{
struct dev_mc_list *mc_ptr;
struct gfar_private *priv = netdev_priv(dev);
- struct gfar *regs = priv->regs;
+ struct gfar __iomem *regs = priv->regs;
u32 tempval;
if(dev->flags & IFF_PROMISC) {
- if (netif_msg_drv(priv))
- printk(KERN_INFO "%s: Entering promiscuous mode.\n",
- dev->name);
/* Set RCTRL to PROM */
tempval = gfar_read(®s->rctrl);
tempval |= RCTRL_PROM;
tempval &= ~(RCTRL_PROM);
gfar_write(®s->rctrl, tempval);
}
-
+
if(dev->flags & IFF_ALLMULTI) {
/* Set the hash to rx all multicast frames */
gfar_write(®s->igaddr0, 0xffffffff);
gfar_write(®s->gaddr6, 0xffffffff);
gfar_write(®s->gaddr7, 0xffffffff);
} else {
+ int em_num;
+ int idx;
+
/* zero out the hash */
gfar_write(®s->igaddr0, 0x0);
gfar_write(®s->igaddr1, 0x0);
gfar_write(®s->gaddr6, 0x0);
gfar_write(®s->gaddr7, 0x0);
+ /* If we have extended hash tables, we need to
+ * clear the exact match registers to prepare for
+ * setting them */
+ if (priv->extended_hash) {
+ em_num = GFAR_EM_NUM + 1;
+ gfar_clear_exact_match(dev);
+ idx = 1;
+ } else {
+ idx = 0;
+ em_num = 0;
+ }
+
if(dev->mc_count == 0)
return;
/* Parse the list, and set the appropriate bits */
for(mc_ptr = dev->mc_list; mc_ptr; mc_ptr = mc_ptr->next) {
- gfar_set_hash_for_addr(dev, mc_ptr->dmi_addr);
+ if (idx < em_num) {
+ gfar_set_mac_for_addr(dev, idx,
+ mc_ptr->dmi_addr);
+ idx++;
+ } else
+ gfar_set_hash_for_addr(dev, mc_ptr->dmi_addr);
}
}
return;
}
+
+/* Clears each of the exact match registers to zero, so they
+ * don't interfere with normal reception */
+static void gfar_clear_exact_match(struct net_device *dev)
+{
+ int idx;
+ u8 zero_arr[MAC_ADDR_LEN] = {0,0,0,0,0,0};
+
+ for(idx = 1;idx < GFAR_EM_NUM + 1;idx++)
+ gfar_set_mac_for_addr(dev, idx, (u8 *)zero_arr);
+}
+
/* Set the appropriate hash bit for the given addr */
/* The algorithm works like so:
* 1) Take the Destination Address (ie the multicast address), and
return;
}
+
+/* There are multiple MAC Address register pairs on some controllers
+ * This function sets the numth pair to a given address
+ */
+static void gfar_set_mac_for_addr(struct net_device *dev, int num, u8 *addr)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+ int idx;
+ char tmpbuf[MAC_ADDR_LEN];
+ u32 tempval;
+ u32 __iomem *macptr = &priv->regs->macstnaddr1;
+
+ macptr += num*2;
+
+ /* Now copy it into the mac registers backwards, cuz */
+ /* little endian is silly */
+ for (idx = 0; idx < MAC_ADDR_LEN; idx++)
+ tmpbuf[MAC_ADDR_LEN - 1 - idx] = addr[idx];
+
+ gfar_write(macptr, *((u32 *) (tmpbuf)));
+
+ tempval = *((u32 *) (tmpbuf + 4));
+
+ gfar_write(macptr+1, tempval);
+}
+
/* GFAR error interrupt handler */
-static irqreturn_t gfar_error(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t gfar_error(int irq, void *dev_id)
{
struct net_device *dev = dev_id;
struct gfar_private *priv = netdev_priv(dev);
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))
printk(KERN_DEBUG "%s: error interrupt (ievent=0x%08x imask=0x%08x)\n",
- dev->name, events, gfar_read(&priv->regs->imask));
+ dev->name, events, gfar_read(&priv->regs->imask));
/* Update the error counters */
if (events & IEVENT_TXE) {
- priv->stats.tx_errors++;
+ dev->stats.tx_errors++;
if (events & IEVENT_LC)
- priv->stats.tx_window_errors++;
+ dev->stats.tx_window_errors++;
if (events & IEVENT_CRL)
- priv->stats.tx_aborted_errors++;
+ dev->stats.tx_aborted_errors++;
if (events & IEVENT_XFUN) {
if (netif_msg_tx_err(priv))
- printk(KERN_DEBUG "%s: underrun. packet dropped.\n",
- dev->name);
- priv->stats.tx_dropped++;
+ printk(KERN_DEBUG "%s: TX FIFO underrun, "
+ "packet dropped.\n", dev->name);
+ dev->stats.tx_dropped++;
priv->extra_stats.tx_underrun++;
/* Reactivate the Tx Queues */
printk(KERN_DEBUG "%s: Transmit Error\n", dev->name);
}
if (events & IEVENT_BSY) {
- priv->stats.rx_errors++;
+ dev->stats.rx_errors++;
priv->extra_stats.rx_bsy++;
- gfar_receive(irq, dev_id, regs);
-
-#ifndef CONFIG_GFAR_NAPI
- /* Clear the halt bit in RSTAT */
- gfar_write(&priv->regs->rstat, RSTAT_CLEAR_RHALT);
-#endif
+ gfar_receive(irq, dev_id);
if (netif_msg_rx_err(priv))
- printk(KERN_DEBUG "%s: busy error (rhalt: %x)\n",
- dev->name,
- gfar_read(&priv->regs->rstat));
+ printk(KERN_DEBUG "%s: busy error (rstat: %x)\n",
+ dev->name, gfar_read(&priv->regs->rstat));
}
if (events & IEVENT_BABR) {
- priv->stats.rx_errors++;
+ dev->stats.rx_errors++;
priv->extra_stats.rx_babr++;
if (netif_msg_rx_err(priv))
- printk(KERN_DEBUG "%s: babbling error\n", dev->name);
+ printk(KERN_DEBUG "%s: babbling RX error\n", dev->name);
}
if (events & IEVENT_EBERR) {
priv->extra_stats.eberr++;
if (netif_msg_rx_err(priv))
- printk(KERN_DEBUG "%s: EBERR\n", dev->name);
+ printk(KERN_DEBUG "%s: bus error\n", dev->name);
}
if ((events & IEVENT_RXC) && netif_msg_rx_status(priv))
- if (netif_msg_rx_status(priv))
- printk(KERN_DEBUG "%s: control frame\n", dev->name);
+ printk(KERN_DEBUG "%s: control frame\n", dev->name);
if (events & IEVENT_BABT) {
priv->extra_stats.tx_babt++;
if (netif_msg_tx_err(priv))
- printk(KERN_DEBUG "%s: babt error\n", dev->name);
+ printk(KERN_DEBUG "%s: babbling TX error\n", dev->name);
}
return IRQ_HANDLED;
}
+/* work with hotplug and coldplug */
+MODULE_ALIAS("platform:fsl-gianfar");
+
/* Structure for a device driver */
-static struct device_driver gfar_driver = {
- .name = "fsl-gianfar",
- .bus = &platform_bus_type,
+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,
+ },
};
static int __init gfar_init(void)
if (err)
return err;
- err = driver_register(&gfar_driver);
+ err = platform_driver_register(&gfar_driver);
if (err)
gfar_mdio_exit();
-
+
return err;
}
static void __exit gfar_exit(void)
{
- driver_unregister(&gfar_driver);
+ platform_driver_unregister(&gfar_driver);
gfar_mdio_exit();
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff