summaryrefslogtreecommitdiffstats
path: root/drivers/net/gianfar.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/gianfar.c')
-rw-r--r--drivers/net/gianfar.c861
1 files changed, 499 insertions, 362 deletions
diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c
index c4af949bf86..c672ecfc959 100644
--- a/drivers/net/gianfar.c
+++ b/drivers/net/gianfar.c
@@ -25,11 +25,8 @@
*
* Theory of operation
*
- * The driver is initialized through platform_device. Structures which
- * define the configuration needed by the board are defined in a
- * board structure in arch/ppc/platforms (though I do not
- * discount the possibility that other architectures could one
- * day be supported.
+ * The driver is initialized through of_device. Configuration information
+ * is therefore conveyed through an OF-style device tree.
*
* The Gianfar Ethernet Controller uses a ring of buffer
* descriptors. The beginning is indicated by a register
@@ -78,7 +75,7 @@
#include <linux/if_vlan.h>
#include <linux/spinlock.h>
#include <linux/mm.h>
-#include <linux/platform_device.h>
+#include <linux/of_platform.h>
#include <linux/ip.h>
#include <linux/tcp.h>
#include <linux/udp.h>
@@ -92,6 +89,8 @@
#include <linux/crc32.h>
#include <linux/mii.h>
#include <linux/phy.h>
+#include <linux/phy_fixed.h>
+#include <linux/of.h>
#include "gianfar.h"
#include "gianfar_mii.h"
@@ -119,8 +118,9 @@ 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 platform_device *pdev);
-static int gfar_remove(struct platform_device *pdev);
+static int gfar_probe(struct of_device *ofdev,
+ const struct of_device_id *match);
+static int gfar_remove(struct of_device *ofdev);
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);
@@ -131,7 +131,8 @@ 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 int gfar_process_frame(struct net_device *dev, struct sk_buff *skb,
+ int amount_pull);
static void gfar_vlan_rx_register(struct net_device *netdev,
struct vlan_group *grp);
void gfar_halt(struct net_device *dev);
@@ -149,29 +150,163 @@ MODULE_LICENSE("GPL");
/* Returns 1 if incoming frames use an FCB */
static inline int gfar_uses_fcb(struct gfar_private *priv)
{
- return (priv->vlan_enable || priv->rx_csum_enable);
+ return priv->vlgrp || priv->rx_csum_enable;
+}
+
+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];
+
+ if (!np || !of_device_is_available(np))
+ return -ENODEV;
+
+ /* get a pointer to the register memory */
+ addr = of_translate_address(np, of_get_address(np, 0, &size, NULL));
+ priv->regs = ioremap(addr, size);
+
+ if (priv->regs == NULL)
+ return -ENOMEM;
+
+ priv->interruptTransmit = irq_of_parse_and_map(np, 0);
+
+ model = of_get_property(np, "model", NULL);
+
+ /* If we aren't the FEC we have multiple interrupts */
+ if (model && strcasecmp(model, "FEC")) {
+ priv->interruptReceive = irq_of_parse_and_map(np, 1);
+
+ priv->interruptError = irq_of_parse_and_map(np, 2);
+
+ if (priv->interruptTransmit < 0 ||
+ priv->interruptReceive < 0 ||
+ priv->interruptError < 0) {
+ err = -EINVAL;
+ goto err_out;
+ }
+ }
+
+ mac_addr = of_get_mac_address(np);
+ if (mac_addr)
+ memcpy(dev->dev_addr, mac_addr, MAC_ADDR_LEN);
+
+ if (model && !strcasecmp(model, "TSEC"))
+ priv->device_flags =
+ FSL_GIANFAR_DEV_HAS_GIGABIT |
+ FSL_GIANFAR_DEV_HAS_COALESCE |
+ FSL_GIANFAR_DEV_HAS_RMON |
+ FSL_GIANFAR_DEV_HAS_MULTI_INTR;
+ if (model && !strcasecmp(model, "eTSEC"))
+ priv->device_flags =
+ FSL_GIANFAR_DEV_HAS_GIGABIT |
+ FSL_GIANFAR_DEV_HAS_COALESCE |
+ FSL_GIANFAR_DEV_HAS_RMON |
+ FSL_GIANFAR_DEV_HAS_MULTI_INTR |
+ FSL_GIANFAR_DEV_HAS_PADDING |
+ FSL_GIANFAR_DEV_HAS_CSUM |
+ FSL_GIANFAR_DEV_HAS_VLAN |
+ FSL_GIANFAR_DEV_HAS_MAGIC_PACKET |
+ FSL_GIANFAR_DEV_HAS_EXTENDED_HASH;
+
+ ctype = of_get_property(np, "phy-connection-type", NULL);
+
+ /* We only care about rgmii-id. The rest are autodetected */
+ if (ctype && !strcmp(ctype, "rgmii-id"))
+ priv->interface = PHY_INTERFACE_MODE_RGMII_ID;
+ else
+ priv->interface = PHY_INTERFACE_MODE_MII;
+
+ 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);
+ }
+
+ /* 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];
+ }
+
+ return 0;
+
+err_out:
+ iounmap(priv->regs);
+ return err;
}
/* Set up the ethernet device structure, private data,
* and anything else we need before we start */
-static int gfar_probe(struct platform_device *pdev)
+static int gfar_probe(struct of_device *ofdev,
+ const struct of_device_id *match)
{
u32 tempval;
struct net_device *dev = NULL;
struct gfar_private *priv = NULL;
- struct gianfar_platform_data *einfo;
- struct resource *r;
- int err = 0, irq;
DECLARE_MAC_BUF(mac);
-
- einfo = (struct gianfar_platform_data *) pdev->dev.platform_data;
-
- if (NULL == einfo) {
- printk(KERN_ERR "gfar %d: Missing additional data!\n",
- pdev->id);
-
- return -ENODEV;
- }
+ int err = 0;
+ int len_devname;
/* Create an ethernet device instance */
dev = alloc_etherdev(sizeof (*priv));
@@ -181,64 +316,23 @@ static int gfar_probe(struct platform_device *pdev)
priv = netdev_priv(dev);
priv->dev = dev;
+ priv->node = ofdev->node;
- /* Set the info in the priv to the current info */
- priv->einfo = einfo;
-
- /* fill out IRQ fields */
- if (einfo->device_flags & FSL_GIANFAR_DEV_HAS_MULTI_INTR) {
- irq = platform_get_irq_byname(pdev, "tx");
- if (irq < 0)
- goto regs_fail;
- priv->interruptTransmit = irq;
-
- irq = platform_get_irq_byname(pdev, "rx");
- if (irq < 0)
- goto regs_fail;
- priv->interruptReceive = irq;
-
- irq = platform_get_irq_byname(pdev, "error");
- if (irq < 0)
- goto regs_fail;
- priv->interruptError = irq;
- } else {
- irq = platform_get_irq(pdev, 0);
- if (irq < 0)
- goto regs_fail;
- priv->interruptTransmit = irq;
- }
-
- /* get a pointer to the register memory */
- r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- priv->regs = ioremap(r->start, sizeof (struct gfar));
+ err = gfar_of_init(dev);
- if (NULL == priv->regs) {
- err = -ENOMEM;
+ if (err)
goto regs_fail;
- }
spin_lock_init(&priv->txlock);
spin_lock_init(&priv->rxlock);
spin_lock_init(&priv->bflock);
INIT_WORK(&priv->reset_task, gfar_reset_task);
- platform_set_drvdata(pdev, dev);
+ dev_set_drvdata(&ofdev->dev, priv);
/* Stop the DMA engine now, in case it was running before */
/* (The firmware could have used it, and left it running). */
- /* To do this, we write Graceful Receive Stop and Graceful */
- /* Transmit Stop, and then wait until the corresponding bits */
- /* in IEVENT indicate the stops have completed. */
- tempval = gfar_read(&priv->regs->dmactrl);
- tempval &= ~(DMACTRL_GRS | DMACTRL_GTS);
- gfar_write(&priv->regs->dmactrl, tempval);
-
- tempval = gfar_read(&priv->regs->dmactrl);
- tempval |= (DMACTRL_GRS | DMACTRL_GTS);
- gfar_write(&priv->regs->dmactrl, tempval);
-
- while (!(gfar_read(&priv->regs->ievent) & (IEVENT_GRSC | IEVENT_GTSC)))
- cpu_relax();
+ gfar_halt(dev);
/* Reset MAC layer */
gfar_write(&priv->regs->maccfg1, MACCFG1_SOFT_RESET);
@@ -252,13 +346,10 @@ static int gfar_probe(struct platform_device *pdev)
/* Initialize ECNTRL */
gfar_write(&priv->regs->ecntrl, ECNTRL_INIT_SETTINGS);
- /* Copy the station address into the dev structure, */
- memcpy(dev->dev_addr, einfo->mac_addr, MAC_ADDR_LEN);
-
/* Set the dev->base_addr to the gfar reg region */
dev->base_addr = (unsigned long) (priv->regs);
- SET_NETDEV_DEV(dev, &pdev->dev);
+ SET_NETDEV_DEV(dev, &ofdev->dev);
/* Fill in the dev structure */
dev->open = gfar_enet_open;
@@ -276,23 +367,21 @@ static int gfar_probe(struct platform_device *pdev)
dev->ethtool_ops = &gfar_ethtool_ops;
- if (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_CSUM) {
+ if (priv->device_flags & FSL_GIANFAR_DEV_HAS_CSUM) {
priv->rx_csum_enable = 1;
- dev->features |= NETIF_F_IP_CSUM;
+ dev->features |= NETIF_F_IP_CSUM | NETIF_F_SG | NETIF_F_HIGHDMA;
} else
priv->rx_csum_enable = 0;
priv->vlgrp = NULL;
- if (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_VLAN) {
+ if (priv->device_flags & FSL_GIANFAR_DEV_HAS_VLAN) {
dev->vlan_rx_register = gfar_vlan_rx_register;
dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
-
- priv->vlan_enable = 1;
}
- if (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_EXTENDED_HASH) {
+ if (priv->device_flags & FSL_GIANFAR_DEV_HAS_EXTENDED_HASH) {
priv->extended_hash = 1;
priv->hash_width = 9;
@@ -327,7 +416,7 @@ static int gfar_probe(struct platform_device *pdev)
priv->hash_regs[7] = &priv->regs->gaddr7;
}
- if (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_PADDING)
+ if (priv->device_flags & FSL_GIANFAR_DEV_HAS_PADDING)
priv->padding = DEFAULT_PADDING;
else
priv->padding = 0;
@@ -338,13 +427,12 @@ static int gfar_probe(struct platform_device *pdev)
priv->rx_buffer_size = DEFAULT_RX_BUFFER_SIZE;
priv->tx_ring_size = DEFAULT_TX_RING_SIZE;
priv->rx_ring_size = DEFAULT_RX_RING_SIZE;
+ priv->num_txbdfree = DEFAULT_TX_RING_SIZE;
priv->txcoalescing = DEFAULT_TX_COALESCE;
- priv->txcount = DEFAULT_TXCOUNT;
- priv->txtime = DEFAULT_TXTIME;
+ priv->txic = DEFAULT_TXIC;
priv->rxcoalescing = DEFAULT_RX_COALESCE;
- priv->rxcount = DEFAULT_RXCOUNT;
- priv->rxtime = DEFAULT_RXTIME;
+ priv->rxic = DEFAULT_RXIC;
/* Enable most messages by default */
priv->msg_enable = (NETIF_MSG_IFUP << 1 ) - 1;
@@ -360,12 +448,28 @@ static int gfar_probe(struct platform_device *pdev)
goto register_fail;
}
+ /* fill out IRQ number and name fields */
+ len_devname = strlen(dev->name);
+ strncpy(&priv->int_name_tx[0], dev->name, len_devname);
+ if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MULTI_INTR) {
+ strncpy(&priv->int_name_tx[len_devname],
+ "_tx", sizeof("_tx") + 1);
+
+ strncpy(&priv->int_name_rx[0], dev->name, len_devname);
+ strncpy(&priv->int_name_rx[len_devname],
+ "_rx", sizeof("_rx") + 1);
+
+ strncpy(&priv->int_name_er[0], dev->name, len_devname);
+ strncpy(&priv->int_name_er[len_devname],
+ "_er", sizeof("_er") + 1);
+ } else
+ priv->int_name_tx[len_devname] = '\0';
+
/* Create all the sysfs files */
gfar_init_sysfs(dev);
/* Print out the device info */
- printk(KERN_INFO DEVICE_NAME "%s\n",
- dev->name, print_mac(mac, dev->dev_addr));
+ printk(KERN_INFO DEVICE_NAME "%pM\n", dev->name, dev->dev_addr);
/* Even more device info helps when determining which kernel */
/* provided which set of benchmarks. */
@@ -382,29 +486,28 @@ regs_fail:
return err;
}
-static int gfar_remove(struct platform_device *pdev)
+static int gfar_remove(struct of_device *ofdev)
{
- struct net_device *dev = platform_get_drvdata(pdev);
- struct gfar_private *priv = netdev_priv(dev);
+ struct gfar_private *priv = dev_get_drvdata(&ofdev->dev);
- platform_set_drvdata(pdev, NULL);
+ dev_set_drvdata(&ofdev->dev, NULL);
iounmap(priv->regs);
- free_netdev(dev);
+ free_netdev(priv->dev);
return 0;
}
#ifdef CONFIG_PM
-static int gfar_suspend(struct platform_device *pdev, pm_message_t state)
+static int gfar_suspend(struct of_device *ofdev, pm_message_t state)
{
- struct net_device *dev = platform_get_drvdata(pdev);
- struct gfar_private *priv = netdev_priv(dev);
+ struct gfar_private *priv = dev_get_drvdata(&ofdev->dev);
+ struct net_device *dev = priv->dev;
unsigned long flags;
u32 tempval;
int magic_packet = priv->wol_en &&
- (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET);
+ (priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET);
netif_device_detach(dev);
@@ -445,14 +548,14 @@ static int gfar_suspend(struct platform_device *pdev, pm_message_t state)
return 0;
}
-static int gfar_resume(struct platform_device *pdev)
+static int gfar_resume(struct of_device *ofdev)
{
- struct net_device *dev = platform_get_drvdata(pdev);
- struct gfar_private *priv = netdev_priv(dev);
+ struct gfar_private *priv = dev_get_drvdata(&ofdev->dev);
+ struct net_device *dev = priv->dev;
unsigned long flags;
u32 tempval;
int magic_packet = priv->wol_en &&
- (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET);
+ (priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET);
if (!netif_running(dev)) {
netif_device_attach(dev);
@@ -511,7 +614,7 @@ static phy_interface_t gfar_get_interface(struct net_device *dev)
if (ecntrl & ECNTRL_REDUCED_MII_MODE)
return PHY_INTERFACE_MODE_RMII;
else {
- phy_interface_t interface = priv->einfo->interface;
+ phy_interface_t interface = priv->interface;
/*
* This isn't autodetected right now, so it must
@@ -524,7 +627,7 @@ static phy_interface_t gfar_get_interface(struct net_device *dev)
}
}
- if (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_GIGABIT)
+ if (priv->device_flags & FSL_GIANFAR_DEV_HAS_GIGABIT)
return PHY_INTERFACE_MODE_GMII;
return PHY_INTERFACE_MODE_MII;
@@ -538,21 +641,18 @@ static int init_phy(struct net_device *dev)
{
struct gfar_private *priv = netdev_priv(dev);
uint gigabit_support =
- priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_GIGABIT ?
+ priv->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;
- 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);
+ phydev = phy_connect(dev, priv->phy_bus_id, &adjust_link, 0, interface);
if (interface == PHY_INTERFACE_MODE_SGMII)
gfar_configure_serdes(dev);
@@ -583,35 +683,31 @@ static int init_phy(struct net_device *dev)
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);
- struct mii_bus *bus = gfar_get_miibus(priv);
- if (bus)
- mutex_lock(&bus->mdio_lock);
+ if (!priv->tbiphy) {
+ printk(KERN_WARNING "SGMII mode requires that the device "
+ "tree specify a tbi-handle\n");
+ return;
+ }
- /* If the link is already up, we must already be ok, and don't need to
+ /*
+ * If the link is already up, we must already be ok, and don't need to
* configure and reset the TBI<->SerDes link. Maybe U-Boot configured
* everything for us? Resetting it takes the link down and requires
* several seconds for it to come back.
*/
- if (gfar_local_mdio_read(regs, tbipa, MII_BMSR) & BMSR_LSTATUS)
- goto done;
+ if (phy_read(priv->tbiphy, MII_BMSR) & BMSR_LSTATUS)
+ return;
/* Single clk mode, mii mode off(for serdes communication) */
- gfar_local_mdio_write(regs, tbipa, MII_TBICON, TBICON_CLK_SELECT);
+ phy_write(priv->tbiphy, MII_TBICON, TBICON_CLK_SELECT);
- gfar_local_mdio_write(regs, tbipa, MII_ADVERTISE,
+ phy_write(priv->tbiphy, MII_ADVERTISE,
ADVERTISE_1000XFULL | ADVERTISE_1000XPAUSE |
ADVERTISE_1000XPSE_ASYM);
- gfar_local_mdio_write(regs, tbipa, MII_BMCR, BMCR_ANENABLE |
+ phy_write(priv->tbiphy, MII_BMCR, BMCR_ANENABLE |
BMCR_ANRESTART | BMCR_FULLDPLX | BMCR_SPEED1000);
-
- done:
- if (bus)
- mutex_unlock(&bus->mdio_lock);
}
static void init_registers(struct net_device *dev)
@@ -644,7 +740,7 @@ static void init_registers(struct net_device *dev)
gfar_write(&priv->regs->gaddr7, 0);
/* Zero out the rmon mib registers if it has them */
- if (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_RMON) {
+ if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) {
memset_io(&(priv->regs->rmon), 0, sizeof (struct rmon_mib));
/* Mask off the CAM interrupts */
@@ -719,7 +815,7 @@ void stop_gfar(struct net_device *dev)
spin_unlock_irqrestore(&priv->txlock, flags);
/* Free the IRQs */
- if (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_MULTI_INTR) {
+ if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MULTI_INTR) {
free_irq(priv->interruptError, dev);
free_irq(priv->interruptTransmit, dev);
free_irq(priv->interruptReceive, dev);
@@ -742,22 +838,26 @@ static void free_skb_resources(struct gfar_private *priv)
{
struct rxbd8 *rxbdp;
struct txbd8 *txbdp;
- int i;
+ int i, j;
/* Go through all the buffer descriptors and free their data buffers */
txbdp = priv->tx_bd_base;
for (i = 0; i < priv->tx_ring_size; i++) {
-
- if (priv->tx_skbuff[i]) {
- 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;
+ if (!priv->tx_skbuff[i])
+ continue;
+
+ dma_unmap_single(&priv->dev->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,
+ txbdp->length, DMA_TO_DEVICE);
}
-
txbdp++;
+ dev_kfree_skb_any(priv->tx_skbuff[i]);
+ priv->tx_skbuff[i] = NULL;
}
kfree(priv->tx_skbuff);
@@ -777,8 +877,7 @@ static void free_skb_resources(struct gfar_private *priv)
priv->rx_skbuff[i] = NULL;
}
- rxbdp->status = 0;
- rxbdp->length = 0;
+ rxbdp->lstatus = 0;
rxbdp->bufPtr = 0;
rxbdp++;
@@ -815,6 +914,8 @@ void gfar_start(struct net_device *dev)
/* Unmask the interrupts we look for */
gfar_write(&regs->imask, IMASK_DEFAULT);
+
+ dev->trans_start = jiffies;
}
/* Bring the controller up and running */
@@ -889,6 +990,7 @@ int startup_gfar(struct net_device *dev)
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;
@@ -897,8 +999,7 @@ int startup_gfar(struct net_device *dev)
/* Initialize Transmit Descriptor Ring */
txbdp = priv->tx_bd_base;
for (i = 0; i < priv->tx_ring_size; i++) {
- txbdp->status = 0;
- txbdp->length = 0;
+ txbdp->lstatus = 0;
txbdp->bufPtr = 0;
txbdp++;
}
@@ -933,11 +1034,11 @@ int startup_gfar(struct net_device *dev)
/* If the device has multiple interrupts, register for
* them. Otherwise, only register for the one */
- if (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_MULTI_INTR) {
+ 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, "enet_error", dev) < 0) {
+ 0, priv->int_name_er, dev) < 0) {
if (netif_msg_intr(priv))
printk(KERN_ERR "%s: Can't get IRQ %d\n",
dev->name, priv->interruptError);
@@ -947,7 +1048,7 @@ int startup_gfar(struct net_device *dev)
}
if (request_irq(priv->interruptTransmit, gfar_transmit,
- 0, "enet_tx", dev) < 0) {
+ 0, priv->int_name_tx, dev) < 0) {
if (netif_msg_intr(priv))
printk(KERN_ERR "%s: Can't get IRQ %d\n",
dev->name, priv->interruptTransmit);
@@ -958,7 +1059,7 @@ int startup_gfar(struct net_device *dev)
}
if (request_irq(priv->interruptReceive, gfar_receive,
- 0, "enet_rx", dev) < 0) {
+ 0, priv->int_name_rx, dev) < 0) {
if (netif_msg_intr(priv))
printk(KERN_ERR "%s: Can't get IRQ %d (receive0)\n",
dev->name, priv->interruptReceive);
@@ -968,10 +1069,10 @@ int startup_gfar(struct net_device *dev)
}
} else {
if (request_irq(priv->interruptTransmit, gfar_interrupt,
- 0, "gfar_interrupt", dev) < 0) {
+ 0, priv->int_name_tx, dev) < 0) {
if (netif_msg_intr(priv))
printk(KERN_ERR "%s: Can't get IRQ %d\n",
- dev->name, priv->interruptError);
+ dev->name, priv->interruptTransmit);
err = -1;
goto err_irq_fail;
@@ -981,17 +1082,13 @@ int startup_gfar(struct net_device *dev)
phy_start(priv->phydev);
/* Configure the coalescing support */
+ gfar_write(&regs->txic, 0);
if (priv->txcoalescing)
- gfar_write(&regs->txic,
- mk_ic_value(priv->txcount, priv->txtime));
- else
- gfar_write(&regs->txic, 0);
+ gfar_write(&regs->txic, priv->txic);
+ gfar_write(&regs->rxic, 0);
if (priv->rxcoalescing)
- gfar_write(&regs->rxic,
- mk_ic_value(priv->rxcount, priv->rxtime));
- else
- gfar_write(&regs->rxic, 0);
+ gfar_write(&regs->rxic, priv->rxic);
if (priv->rx_csum_enable)
rctrl |= RCTRL_CHECKSUMMING;
@@ -1003,9 +1100,6 @@ int startup_gfar(struct net_device *dev)
rctrl |= RCTRL_EMEN;
}
- if (priv->vlan_enable)
- rctrl |= RCTRL_VLAN;
-
if (priv->padding) {
rctrl &= ~RCTRL_PAL_MASK;
rctrl |= RCTRL_PADDING(priv->padding);
@@ -1094,11 +1188,11 @@ static int gfar_enet_open(struct net_device *dev)
return err;
}
-static inline struct txfcb *gfar_add_fcb(struct sk_buff *skb, struct txbd8 *bdp)
+static inline struct txfcb *gfar_add_fcb(struct sk_buff *skb)
{
struct txfcb *fcb = (struct txfcb *)skb_push (skb, GMAC_FCB_LEN);
- memset(fcb, 0, GMAC_FCB_LEN);
+ cacheable_memzero(fcb, GMAC_FCB_LEN);
return fcb;
}
@@ -1137,96 +1231,140 @@ void inline gfar_tx_vlan(struct sk_buff *skb, struct txfcb *fcb)
fcb->vlctl = vlan_tx_tag_get(skb);
}
+static inline struct txbd8 *skip_txbd(struct txbd8 *bdp, int stride,
+ struct txbd8 *base, int ring_size)
+{
+ struct txbd8 *new_bd = bdp + stride;
+
+ return (new_bd >= (base + ring_size)) ? (new_bd - ring_size) : new_bd;
+}
+
+static inline struct txbd8 *next_txbd(struct txbd8 *bdp, struct txbd8 *base,
+ int ring_size)
+{
+ return skip_txbd(bdp, 1, base, ring_size);
+}
+
/* This is called by the kernel when a frame is ready for transmission. */
/* It is pointed to by the dev->hard_start_xmit function pointer */
static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct gfar_private *priv = netdev_priv(dev);
struct txfcb *fcb = NULL;
- struct txbd8 *txbdp;
- u16 status;
+ struct txbd8 *txbdp, *txbdp_start, *base;
+ u32 lstatus;
+ int i;
+ u32 bufaddr;
unsigned long flags;
+ unsigned int nr_frags, length;
+
+ base = priv->tx_bd_base;
+
+ /* 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) {
+ /* no space, stop the queue */
+ netif_stop_queue(dev);
+ dev->stats.tx_fifo_errors++;
+ spin_unlock_irqrestore(&priv->txlock, flags);
+ return NETDEV_TX_BUSY;
+ }
/* Update transmit stats */
dev->stats.tx_bytes += skb->len;
- /* Lock priv now */
- spin_lock_irqsave(&priv->txlock, flags);
+ txbdp = txbdp_start = priv->cur_tx;
- /* Point at the first free tx descriptor */
- txbdp = priv->cur_tx;
+ if (nr_frags == 0) {
+ lstatus = txbdp->lstatus | BD_LFLAG(TXBD_LAST | TXBD_INTERRUPT);
+ } else {
+ /* Place the fragment addresses and lengths into the TxBDs */
+ for (i = 0; i < nr_frags; i++) {
+ /* Point at the next BD, wrapping as needed */
+ txbdp = next_txbd(txbdp, base, priv->tx_ring_size);
+
+ length = skb_shinfo(skb)->frags[i].size;
- /* Clear all but the WRAP status flags */
- status = txbdp->status & TXBD_WRAP;
+ lstatus = txbdp->lstatus | length |
+ BD_LFLAG(TXBD_READY);
+
+ /* Handle the last BD specially */
+ if (i == nr_frags - 1)
+ lstatus |= BD_LFLAG(TXBD_LAST | TXBD_INTERRUPT);
+
+ bufaddr = dma_map_page(&dev->dev,
+ skb_shinfo(skb)->frags[i].page,
+ skb_shinfo(skb)->frags[i].page_offset,
+ length,
+ DMA_TO_DEVICE);
+
+ /* set the TxBD length and buffer pointer */
+ txbdp->bufPtr = bufaddr;
+ txbdp->lstatus = lstatus;
+ }
+
+ lstatus = txbdp_start->lstatus;
+ }
/* Set up checksumming */
- if (likely((dev->features & NETIF_F_IP_CSUM)
- && (CHECKSUM_PARTIAL == skb->ip_summed))) {
- fcb = gfar_add_fcb(skb, txbdp);
- status |= TXBD_TOE;
+ if (CHECKSUM_PARTIAL == skb->ip_summed) {
+ fcb = gfar_add_fcb(skb);
+ lstatus |= BD_LFLAG(TXBD_TOE);
gfar_tx_checksum(skb, fcb);
}
- if (priv->vlan_enable &&
- unlikely(priv->vlgrp && vlan_tx_tag_present(skb))) {
+ if (priv->vlgrp && vlan_tx_tag_present(skb)) {
if (unlikely(NULL == fcb)) {
- fcb = gfar_add_fcb(skb, txbdp);
- status |= TXBD_TOE;
+ fcb = gfar_add_fcb(skb);
+ lstatus |= BD_LFLAG(TXBD_TOE);
}
gfar_tx_vlan(skb, fcb);
}
- /* Set buffer length and pointer */
- txbdp->length = skb->len;
- txbdp->bufPtr = dma_map_single(&dev->dev, skb->data,
- skb->len, DMA_TO_DEVICE);
-
- /* Save the skb pointer so we can free it later */
+ /* 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,
+ skb_headlen(skb), DMA_TO_DEVICE);
- /* Update the current skb pointer (wrapping if this was the last) */
- priv->skb_curtx =
- (priv->skb_curtx + 1) & TX_RING_MOD_MASK(priv->tx_ring_size);
-
- /* Flag the BD as interrupt-causing */
- status |= TXBD_INTERRUPT;
+ lstatus |= BD_LFLAG(TXBD_CRC | TXBD_READY) | skb_headlen(skb);
- /* Flag the BD as ready to go, last in frame, and */
- /* in need of CRC */
- status |= (TXBD_READY | TXBD_LAST | TXBD_CRC);
-
- dev->trans_start = jiffies;
-
- /* The powerpc-specific eieio() is used, as wmb() has too strong
+ /*
+ * 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)
- txbdp = priv->tx_bd_base;
- else
- txbdp++;
+ txbdp_start->lstatus = lstatus;
+
+ /* Update the current skb pointer to the next entry we will use
+ * (wrapping if necessary) */
+ priv->skb_curtx = (priv->skb_curtx + 1) &
+ TX_RING_MOD_MASK(priv->tx_ring_size);
+
+ priv->cur_tx = next_txbd(txbdp, base, priv->tx_ring_size);
+
+ /* reduce TxBD free count */
+ priv->num_txbdfree -= (nr_frags + 1);
+
+ dev->trans_start = jiffies;
/* If the next BD still needs to be cleaned up, then the bds
are full. We need to tell the kernel to stop sending us stuff. */
- if (txbdp == priv->dirty_tx) {
+ if (!priv->num_txbdfree) {
netif_stop_queue(dev);
dev->stats.tx_fifo_errors++;
}
- /* Update the current txbd to the next one */
- priv->cur_tx = txbdp;
-
/* Tell the DMA to go go go */
gfar_write(&priv->regs->tstat, TSTAT_CLEAR_THALT);
@@ -1270,11 +1408,15 @@ static void gfar_vlan_rx_register(struct net_device *dev,
{
struct gfar_private *priv = netdev_priv(dev);
unsigned long flags;
+ struct vlan_group *old_grp;
u32 tempval;
spin_lock_irqsave(&priv->rxlock, flags);
- priv->vlgrp = grp;
+ old_grp = priv->vlgrp;
+
+ if (old_grp == grp)
+ return;
if (grp) {
/* Enable VLAN tag insertion */
@@ -1286,6 +1428,7 @@ static void gfar_vlan_rx_register(struct net_device *dev,
/* 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 {
/* Disable VLAN tag insertion */
@@ -1296,9 +1439,16 @@ static void gfar_vlan_rx_register(struct net_device *dev,
/* Disable VLAN tag extraction */
tempval = gfar_read(&priv->regs->rctrl);
tempval &= ~RCTRL_VLEX;
+ /* If parse is no longer required, then disable parser */
+ if (tempval & RCTRL_REQ_PARSER)
+ tempval |= RCTRL_PRSDEP_INIT;
+ else
+ tempval &= ~RCTRL_PRSDEP_INIT;
gfar_write(&priv->regs->rctrl, tempval);
}
+ gfar_change_mtu(dev, dev->mtu);
+
spin_unlock_irqrestore(&priv->rxlock, flags);
}
@@ -1309,14 +1459,9 @@ static int gfar_change_mtu(struct net_device *dev, int new_mtu)
int oldsize = priv->rx_buffer_size;
int frame_size = new_mtu + ETH_HLEN;
- if (priv->vlan_enable)
+ if (priv->vlgrp)
frame_size += VLAN_HLEN;
- if (gfar_uses_fcb(priv))
- frame_size += GMAC_FCB_LEN;
-
- frame_size += priv->padding;
-
if ((frame_size < 64) || (frame_size > JUMBO_FRAME_SIZE)) {
if (netif_msg_drv(priv))
printk(KERN_ERR "%s: Invalid MTU setting\n",
@@ -1324,6 +1469,11 @@ static int gfar_change_mtu(struct net_device *dev, int new_mtu)
return -EINVAL;
}
+ if (gfar_uses_fcb(priv))
+ frame_size += GMAC_FCB_LEN;
+
+ frame_size += priv->padding;
+
tempsize =
(frame_size & ~(INCREMENTAL_BUFFER_SIZE - 1)) +
INCREMENTAL_BUFFER_SIZE;
@@ -1388,83 +1538,85 @@ static void gfar_timeout(struct net_device *dev)
/* 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);
+ struct txbd8 *bdp;
+ struct txbd8 *lbdp = NULL;
+ struct txbd8 *base = priv->tx_bd_base;
+ struct sk_buff *skb;
+ int skb_dirtytx;
+ int tx_ring_size = priv->tx_ring_size;
+ int frags = 0;
+ int i;
int howmany = 0;
+ u32 lstatus;
bdp = priv->dirty_tx;
- while ((bdp->status & TXBD_READY) == 0) {
- /* If dirty_tx and cur_tx are the same, then either the */
- /* ring is empty or full now (it could only be full in the beginning, */
- /* obviously). If it is empty, we are done. */
- if ((bdp == priv->cur_tx) && (netif_queue_stopped(dev) == 0))
- break;
+ skb_dirtytx = priv->skb_dirtytx;
- howmany++;
+ while ((skb = priv->tx_skbuff[skb_dirtytx])) {
+ frags = skb_shinfo(skb)->nr_frags;
+ lbdp = skip_txbd(bdp, frags, base, tx_ring_size);
- /* Deferred means some collisions occurred during transmit, */
- /* but we eventually sent the packet. */
- if (bdp->status & TXBD_DEF)
- dev->stats.collisions++;
+ lstatus = lbdp->lstatus;
- /* Unmap the DMA memory */
- dma_unmap_single(&priv->dev->dev, bdp->bufPtr,
- bdp->length, DMA_TO_DEVICE);
+ /* Only clean completed frames */
+ if ((lstatus & BD_LFLAG(TXBD_READY)) &&
+ (lstatus & BD_LENGTH_MASK))
+ break;
+
+ dma_unmap_single(&dev->dev,
+ bdp->bufPtr,
+ bdp->length,
+ DMA_TO_DEVICE);
- /* Free the sk buffer associated with this TxBD */
- dev_kfree_skb_irq(priv->tx_skbuff[priv->skb_dirtytx]);
+ bdp->lstatus &= BD_LFLAG(TXBD_WRAP);
+ bdp = next_txbd(bdp, base, tx_ring_size);
- priv->tx_skbuff[priv->skb_dirtytx] = NULL;
- priv->skb_dirtytx =
- (priv->skb_dirtytx +
- 1) & TX_RING_MOD_MASK(priv->tx_ring_size);
+ for (i = 0; i < frags; i++) {
+ dma_unmap_page(&dev->dev,
+ bdp->bufPtr,
+ bdp->length,
+ DMA_TO_DEVICE);
+ bdp->lstatus &= BD_LFLAG(TXBD_WRAP);
+ bdp = next_txbd(bdp, base, tx_ring_size);
+ }
- /* Clean BD length for empty detection */
- bdp->length = 0;
+ dev_kfree_skb_any(skb);
+ priv->tx_skbuff[skb_dirtytx] = NULL;
- /* update bdp to point at next bd in the ring (wrapping if necessary) */
- if (bdp->status & TXBD_WRAP)
- bdp = priv->tx_bd_base;
- else
- bdp++;
+ skb_dirtytx = (skb_dirtytx + 1) &
+ TX_RING_MOD_MASK(tx_ring_size);
- /* Move dirty_tx to be the next bd */
- priv->dirty_tx = bdp;
+ howmany++;
+ priv->num_txbdfree += frags + 1;
+ }
+
+ /* If we freed a buffer, we can restart transmission, if necessary */
+ if (netif_queue_stopped(dev) && priv->num_txbdfree)
+ netif_wake_queue(dev);
- /* We freed a buffer, so now we can restart transmission */
- if (netif_queue_stopped(dev))
- netif_wake_queue(dev);
- } /* while ((bdp->status & TXBD_READY) == 0) */
+ /* Update dirty indicators */
+ priv->skb_dirtytx = skb_dirtytx;
+ priv->dirty_tx = bdp;
dev->stats.tx_packets += howmany;
return howmany;
}
-/* Interrupt Handler for Transmit complete */
-static irqreturn_t gfar_transmit(int irq, void *dev_id)
+static void gfar_schedule_cleanup(struct net_device *dev)
{
- 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 (likely(priv->txcoalescing)) {
- gfar_write(&priv->regs->txic, 0);
- gfar_write(&priv->regs->txic,
- mk_ic_value(priv->txcount, priv->txtime));
+ if (netif_rx_schedule_prep(&priv->napi)) {
+ gfar_write(&priv->regs->imask, IMASK_RTX_DISABLED);
+ __netif_rx_schedule(&priv->napi);
}
+}
- spin_unlock(&priv->txlock);
-
+/* Interrupt Handler for Transmit complete */
+static irqreturn_t gfar_transmit(int irq, void *dev_id)
+{
+ gfar_schedule_cleanup((struct net_device *)dev_id);
return IRQ_HANDLED;
}
@@ -1472,20 +1624,19 @@ 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;
+ u32 lstatus;
bdp->bufPtr = dma_map_single(&dev->dev, skb->data,
priv->rx_buffer_size, DMA_FROM_DEVICE);
- flags = RXBD_EMPTY | RXBD_INTERRUPT;
+ lstatus = BD_LFLAG(RXBD_EMPTY | RXBD_INTERRUPT);
if (bdp == priv->rx_bd_base + priv->rx_ring_size - 1)
- flags |= RXBD_WRAP;
+ lstatus |= BD_LFLAG(RXBD_WRAP);
eieio();
- *status_len = (u32)flags << 16;
+ bdp->lstatus = lstatus;
}
@@ -1552,28 +1703,7 @@ static inline void count_errors(unsigned short status, struct net_device *dev)
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);
- u32 tempval;
-
- /* support 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);
-
- if (netif_rx_schedule_prep(dev, &priv->napi)) {
- tempval = gfar_read(&priv->regs->imask);
- tempval &= IMASK_RTX_DISABLED;
- gfar_write(&priv->regs->imask, tempval);
-
- __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));
- }
-
+ gfar_schedule_cleanup((struct net_device *)dev_id);
return IRQ_HANDLED;
}
@@ -1589,59 +1719,38 @@ static inline void gfar_rx_checksum(struct sk_buff *skb, struct rxfcb *fcb)
}
-static inline struct rxfcb *gfar_get_fcb(struct sk_buff *skb)
-{
- struct rxfcb *fcb = (struct rxfcb *)skb->data;
-
- /* Remove the FCB from the skb */
- skb_pull(skb, GMAC_FCB_LEN);
-
- return fcb;
-}
-
/* gfar_process_frame() -- handle one incoming packet if skb
* isn't NULL. */
static int gfar_process_frame(struct net_device *dev, struct sk_buff *skb,
- int length)
+ int amount_pull)
{
struct gfar_private *priv = netdev_priv(dev);
struct rxfcb *fcb = NULL;
- if (NULL == skb) {
- if (netif_msg_rx_err(priv))
- printk(KERN_WARNING "%s: Missing skb!!.\n", dev->name);
- dev->stats.rx_dropped++;
- priv->extra_stats.rx_skbmissing++;
- } else {
- int ret;
-
- /* Prep the skb for the packet */
- skb_put(skb, length);
+ int ret;
- /* Grab the FCB if there is one */
- if (gfar_uses_fcb(priv))
- fcb = gfar_get_fcb(skb);
+ /* fcb is at the beginning if exists */
+ fcb = (struct rxfcb *)skb->data;
- /* Remove the padded bytes, if there are any */
- if (priv->padding)
- skb_pull(skb, priv->padding);
+ /* Remove the FCB from the skb */
+ /* Remove the padded bytes, if there are any */
+ if (amount_pull)
+ skb_pull(skb, amount_pull);
- if (priv->rx_csum_enable)
- gfar_rx_checksum(skb, fcb);
+ if (priv->rx_csum_enable)
+ gfar_rx_checksum(skb, fcb);
- /* Tell the skb what kind of packet this is */
- skb->protocol = eth_type_trans(skb, dev);
+ /* Tell the skb what kind of packet this is */
+ skb->protocol = eth_type_trans(skb, dev);
- /* Send the packet up the stack */
- if (unlikely(priv->vlgrp && (fcb->flags & RXFCB_VLN))) {
- ret = vlan_hwaccel_receive_skb(skb, priv->vlgrp,
- fcb->vlctl);
- } else
- ret = netif_receive_skb(skb);
+ /* Send the packet up the stack */
+ 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++;
- }
+ if (NET_RX_DROP == ret)
+ priv->extra_stats.kernel_dropped++;
return 0;
}
@@ -1652,14 +1761,19 @@ static int gfar_process_frame(struct net_device *dev, struct sk_buff *skb,
*/
int gfar_clean_rx_ring(struct net_device *dev, int rx_work_limit)
{
- struct rxbd8 *bdp;
+ struct rxbd8 *bdp, *base;
struct sk_buff *skb;
- u16 pkt_len;
+ int pkt_len;
+ int amount_pull;
int howmany = 0;
struct gfar_private *priv = netdev_priv(dev);
/* Get the first full descriptor */
bdp = priv->cur_rx;
+ base = priv->rx_bd_base;
+
+ amount_pull = (gfar_uses_fcb(priv) ? GMAC_FCB_LEN : 0) +
+ priv->padding;
while (!((bdp->status & RXBD_EMPTY) || (--rx_work_limit < 0))) {
struct sk_buff *newskb;
@@ -1680,23 +1794,30 @@ int gfar_clean_rx_ring(struct net_device *dev, int rx_work_limit)
if (unlikely(!newskb))
newskb = skb;
-
- if (skb)
+ else if (skb)
dev_kfree_skb_any(skb);
} else {
/* Increment the number of packets */
dev->stats.rx_packets++;
howmany++;
- /* Remove the FCS from the packet length */
- pkt_len = bdp->length - 4;
+ if (likely(skb)) {
+ pkt_len = bdp->length - ETH_FCS_LEN;
+ /* Remove the FCS from the packet length */
+ skb_put(skb, pkt_len);
+ dev->stats.rx_bytes += pkt_len;
- gfar_process_frame(dev, skb, pkt_len);
+ gfar_process_frame(dev, skb, amount_pull);
- dev->stats.rx_bytes += pkt_len;
- }
+ } else {
+ if (netif_msg_rx_err(priv))
+ printk(KERN_WARNING
+ "%s: Missing skb!\n", dev->name);
+ dev->stats.rx_dropped++;
+ priv->extra_stats.rx_skbmissing++;
+ }
- dev->last_rx = jiffies;
+ }
priv->rx_skbuff[priv->skb_currx] = newskb;
@@ -1704,10 +1825,7 @@ int gfar_clean_rx_ring(struct net_device *dev, int rx_work_limit)
gfar_new_rxbdp(dev, bdp, newskb);
/* Update to the next pointer */
- if (bdp->status & RXBD_WRAP)
- bdp = priv->rx_bd_base;
- else
- bdp++;
+ bdp = next_bd(bdp, base, priv->rx_ring_size);
/* update to point at the next skb */
priv->skb_currx =
@@ -1725,19 +1843,27 @@ 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;
+ int tx_cleaned = 0;
+ int rx_cleaned = 0;
unsigned long flags;
+ /* 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 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);
+ tx_cleaned = gfar_clean_tx_ring(dev);
spin_unlock_irqrestore(&priv->txlock, flags);
}
- howmany = gfar_clean_rx_ring(dev, budget);
+ rx_cleaned = gfar_clean_rx_ring(dev, budget);
+
+ if (tx_cleaned)
+ return budget;
- if (howmany < budget) {
- netif_rx_complete(dev, napi);
+ if (rx_cleaned < budget) {
+ netif_rx_complete(napi);
/* Clear the halt bit in RSTAT */
gfar_write(&priv->regs->rstat, RSTAT_CLEAR_RHALT);
@@ -1748,12 +1874,15 @@ static int gfar_poll(struct napi_struct *napi, int budget)
/* 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));
+ gfar_write(&priv->regs->rxic, priv->rxic);
+ }
+ if (likely(priv->txcoalescing)) {
+ gfar_write(&priv->regs->txic, 0);
+ gfar_write(&priv->regs->txic, priv->txic);
}
}
- return howmany;
+ return rx_cleaned;
}
#ifdef CONFIG_NET_POLL_CONTROLLER
@@ -1767,7 +1896,7 @@ 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) {
+ if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MULTI_INTR) {
disable_irq(priv->interruptTransmit);
disable_irq(priv->interruptReceive);
disable_irq(priv->interruptError);
@@ -2061,7 +2190,7 @@ static irqreturn_t gfar_error(int irq, void *dev_id)
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) &&
+ if ((priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) &&
(events & IEVENT_MAG))
events &= ~IEVENT_MAG;
@@ -2127,16 +2256,24 @@ static irqreturn_t gfar_error(int irq, void *dev_id)
/* work with hotplug and coldplug */
MODULE_ALIAS("platform:fsl-gianfar");
+static struct of_device_id gfar_match[] =
+{
+ {
+ .type = "network",
+ .compatible = "gianfar",
+ },
+ {},
+};
+
/* Structure for a device driver */
-static struct platform_driver gfar_driver = {
+static struct of_platform_driver gfar_driver = {
+ .name = "fsl-gianfar",
+ .match_table = gfar_match,
+
.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)
@@ -2146,7 +2283,7 @@ static int __init gfar_init(void)
if (err)
return err;
- err = platform_driver_register(&gfar_driver);
+ err = of_register_platform_driver(&gfar_driver);
if (err)
gfar_mdio_exit();
@@ -2156,7 +2293,7 @@ static int __init gfar_init(void)
static void __exit gfar_exit(void)
{
- platform_driver_unregister(&gfar_driver);
+ of_unregister_platform_driver(&gfar_driver);
gfar_mdio_exit();
}
generated by cgit (git 2.34.1) at 2024-11-11 23:02:09 +0000