#include <linux/types.h>
#include <linux/slab.h>
#include <linux/init.h>
+#include <linux/interrupt.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
-#include <linux/mii.h>
-#include <linux/mutex.h>
#include <linux/dma-mapping.h>
-#include <linux/ethtool.h>
#include <linux/platform_device.h>
+#include <linux/phy.h>
-#include <asm/arch/board.h>
+#include <mach/board.h>
+#include <mach/cpu.h>
#include "macb.h"
addr[4] = top & 0xff;
addr[5] = (top >> 8) & 0xff;
- if (is_valid_ether_addr(addr))
+ if (is_valid_ether_addr(addr)) {
memcpy(bp->dev->dev_addr, addr, sizeof(addr));
+ } else {
+ dev_info(&bp->pdev->dev, "invalid hw address, using random\n");
+ random_ether_addr(bp->dev->dev_addr);
+ }
}
-static void macb_enable_mdio(struct macb *bp)
-{
- unsigned long flags;
- u32 reg;
-
- spin_lock_irqsave(&bp->lock, flags);
- reg = macb_readl(bp, NCR);
- reg |= MACB_BIT(MPE);
- macb_writel(bp, NCR, reg);
- macb_writel(bp, IER, MACB_BIT(MFD));
- spin_unlock_irqrestore(&bp->lock, flags);
-}
-
-static void macb_disable_mdio(struct macb *bp)
-{
- unsigned long flags;
- u32 reg;
-
- spin_lock_irqsave(&bp->lock, flags);
- reg = macb_readl(bp, NCR);
- reg &= ~MACB_BIT(MPE);
- macb_writel(bp, NCR, reg);
- macb_writel(bp, IDR, MACB_BIT(MFD));
- spin_unlock_irqrestore(&bp->lock, flags);
-}
-
-static int macb_mdio_read(struct net_device *dev, int phy_id, int location)
+static int macb_mdio_read(struct mii_bus *bus, int mii_id, int regnum)
{
- struct macb *bp = netdev_priv(dev);
+ struct macb *bp = bus->priv;
int value;
- mutex_lock(&bp->mdio_mutex);
-
- macb_enable_mdio(bp);
macb_writel(bp, MAN, (MACB_BF(SOF, MACB_MAN_SOF)
| MACB_BF(RW, MACB_MAN_READ)
- | MACB_BF(PHYA, phy_id)
- | MACB_BF(REGA, location)
+ | MACB_BF(PHYA, mii_id)
+ | MACB_BF(REGA, regnum)
| MACB_BF(CODE, MACB_MAN_CODE)));
- wait_for_completion(&bp->mdio_complete);
+ /* wait for end of transfer */
+ while (!MACB_BFEXT(IDLE, macb_readl(bp, NSR)))
+ cpu_relax();
value = MACB_BFEXT(DATA, macb_readl(bp, MAN));
- macb_disable_mdio(bp);
- mutex_unlock(&bp->mdio_mutex);
return value;
}
-static void macb_mdio_write(struct net_device *dev, int phy_id,
- int location, int val)
+static int macb_mdio_write(struct mii_bus *bus, int mii_id, int regnum,
+ u16 value)
{
- struct macb *bp = netdev_priv(dev);
-
- dev_dbg(&bp->pdev->dev, "mdio_write %02x:%02x <- %04x\n",
- phy_id, location, val);
-
- mutex_lock(&bp->mdio_mutex);
- macb_enable_mdio(bp);
+ struct macb *bp = bus->priv;
macb_writel(bp, MAN, (MACB_BF(SOF, MACB_MAN_SOF)
| MACB_BF(RW, MACB_MAN_WRITE)
- | MACB_BF(PHYA, phy_id)
- | MACB_BF(REGA, location)
+ | MACB_BF(PHYA, mii_id)
+ | MACB_BF(REGA, regnum)
| MACB_BF(CODE, MACB_MAN_CODE)
- | MACB_BF(DATA, val)));
+ | MACB_BF(DATA, value)));
- wait_for_completion(&bp->mdio_complete);
+ /* wait for end of transfer */
+ while (!MACB_BFEXT(IDLE, macb_readl(bp, NSR)))
+ cpu_relax();
- macb_disable_mdio(bp);
- mutex_unlock(&bp->mdio_mutex);
+ return 0;
}
-static int macb_phy_probe(struct macb *bp)
+static int macb_mdio_reset(struct mii_bus *bus)
{
- int phy_address;
- u16 phyid1, phyid2;
+ return 0;
+}
- for (phy_address = 0; phy_address < 32; phy_address++) {
- phyid1 = macb_mdio_read(bp->dev, phy_address, MII_PHYSID1);
- phyid2 = macb_mdio_read(bp->dev, phy_address, MII_PHYSID2);
+static void macb_handle_link_change(struct net_device *dev)
+{
+ struct macb *bp = netdev_priv(dev);
+ struct phy_device *phydev = bp->phy_dev;
+ unsigned long flags;
- if (phyid1 != 0xffff && phyid1 != 0x0000
- && phyid2 != 0xffff && phyid2 != 0x0000)
- break;
+ int status_change = 0;
+
+ spin_lock_irqsave(&bp->lock, flags);
+
+ if (phydev->link) {
+ if ((bp->speed != phydev->speed) ||
+ (bp->duplex != phydev->duplex)) {
+ u32 reg;
+
+ reg = macb_readl(bp, NCFGR);
+ reg &= ~(MACB_BIT(SPD) | MACB_BIT(FD));
+
+ if (phydev->duplex)
+ reg |= MACB_BIT(FD);
+ if (phydev->speed == SPEED_100)
+ reg |= MACB_BIT(SPD);
+
+ macb_writel(bp, NCFGR, reg);
+
+ bp->speed = phydev->speed;
+ bp->duplex = phydev->duplex;
+ status_change = 1;
+ }
}
- if (phy_address == 32)
- return -ENODEV;
+ if (phydev->link != bp->link) {
+ if (!phydev->link) {
+ bp->speed = 0;
+ bp->duplex = -1;
+ }
+ bp->link = phydev->link;
- dev_info(&bp->pdev->dev,
- "detected PHY at address %d (ID %04x:%04x)\n",
- phy_address, phyid1, phyid2);
+ status_change = 1;
+ }
- bp->mii.phy_id = phy_address;
- return 0;
+ spin_unlock_irqrestore(&bp->lock, flags);
+
+ if (status_change) {
+ if (phydev->link)
+ printk(KERN_INFO "%s: link up (%d/%s)\n",
+ dev->name, phydev->speed,
+ DUPLEX_FULL == phydev->duplex ? "Full":"Half");
+ else
+ printk(KERN_INFO "%s: link down\n", dev->name);
+ }
}
-static void macb_set_media(struct macb *bp, int media)
+/* based on au1000_eth. c*/
+static int macb_mii_probe(struct net_device *dev)
{
- u32 reg;
-
- spin_lock_irq(&bp->lock);
- reg = macb_readl(bp, NCFGR);
- reg &= ~(MACB_BIT(SPD) | MACB_BIT(FD));
- if (media & (ADVERTISE_100HALF | ADVERTISE_100FULL))
- reg |= MACB_BIT(SPD);
- if (media & ADVERTISE_FULL)
- reg |= MACB_BIT(FD);
- macb_writel(bp, NCFGR, reg);
- spin_unlock_irq(&bp->lock);
+ struct macb *bp = netdev_priv(dev);
+ struct phy_device *phydev;
+ struct eth_platform_data *pdata;
+ int ret;
+
+ phydev = phy_find_first(bp->mii_bus);
+ if (!phydev) {
+ printk (KERN_ERR "%s: no PHY found\n", dev->name);
+ return -1;
+ }
+
+ pdata = bp->pdev->dev.platform_data;
+ /* TODO : add pin_irq */
+
+ /* attach the mac to the phy */
+ ret = phy_connect_direct(dev, phydev, &macb_handle_link_change, 0,
+ pdata && pdata->is_rmii ?
+ PHY_INTERFACE_MODE_RMII :
+ PHY_INTERFACE_MODE_MII);
+ if (ret) {
+ printk(KERN_ERR "%s: Could not attach to PHY\n", dev->name);
+ return ret;
+ }
+
+ /* mask with MAC supported features */
+ phydev->supported &= PHY_BASIC_FEATURES;
+
+ phydev->advertising = phydev->supported;
+
+ bp->link = 0;
+ bp->speed = 0;
+ bp->duplex = -1;
+ bp->phy_dev = phydev;
+
+ return 0;
}
-static void macb_check_media(struct macb *bp, int ok_to_print, int init_media)
+static int macb_mii_init(struct macb *bp)
{
- struct mii_if_info *mii = &bp->mii;
- unsigned int old_carrier, new_carrier;
- int advertise, lpa, media, duplex;
+ struct eth_platform_data *pdata;
+ int err = -ENXIO, i;
- /* if forced media, go no further */
- if (mii->force_media)
- return;
+ /* Enable management port */
+ macb_writel(bp, NCR, MACB_BIT(MPE));
+
+ bp->mii_bus = mdiobus_alloc();
+ if (bp->mii_bus == NULL) {
+ err = -ENOMEM;
+ goto err_out;
+ }
- /* check current and old link status */
- old_carrier = netif_carrier_ok(mii->dev) ? 1 : 0;
- new_carrier = (unsigned int) mii_link_ok(mii);
+ bp->mii_bus->name = "MACB_mii_bus";
+ bp->mii_bus->read = &macb_mdio_read;
+ bp->mii_bus->write = &macb_mdio_write;
+ bp->mii_bus->reset = &macb_mdio_reset;
+ snprintf(bp->mii_bus->id, MII_BUS_ID_SIZE, "%x", bp->pdev->id);
+ bp->mii_bus->priv = bp;
+ bp->mii_bus->parent = &bp->dev->dev;
+ pdata = bp->pdev->dev.platform_data;
- /* if carrier state did not change, assume nothing else did */
- if (!init_media && old_carrier == new_carrier)
- return;
+ if (pdata)
+ bp->mii_bus->phy_mask = pdata->phy_mask;
- /* no carrier, nothing much to do */
- if (!new_carrier) {
- netif_carrier_off(mii->dev);
- printk(KERN_INFO "%s: link down\n", mii->dev->name);
- return;
+ bp->mii_bus->irq = kmalloc(sizeof(int)*PHY_MAX_ADDR, GFP_KERNEL);
+ if (!bp->mii_bus->irq) {
+ err = -ENOMEM;
+ goto err_out_free_mdiobus;
}
- /*
- * we have carrier, see who's on the other end
- */
- netif_carrier_on(mii->dev);
+ for (i = 0; i < PHY_MAX_ADDR; i++)
+ bp->mii_bus->irq[i] = PHY_POLL;
- /* get MII advertise and LPA values */
- if (!init_media && mii->advertising) {
- advertise = mii->advertising;
- } else {
- advertise = mii->mdio_read(mii->dev, mii->phy_id, MII_ADVERTISE);
- mii->advertising = advertise;
- }
- lpa = mii->mdio_read(mii->dev, mii->phy_id, MII_LPA);
+ dev_set_drvdata(&bp->dev->dev, bp->mii_bus);
- /* figure out media and duplex from advertise and LPA values */
- media = mii_nway_result(lpa & advertise);
- duplex = (media & ADVERTISE_FULL) ? 1 : 0;
+ if (mdiobus_register(bp->mii_bus))
+ goto err_out_free_mdio_irq;
- if (ok_to_print)
- printk(KERN_INFO "%s: link up, %sMbps, %s-duplex, lpa 0x%04X\n",
- mii->dev->name,
- media & (ADVERTISE_100FULL | ADVERTISE_100HALF) ? "100" : "10",
- duplex ? "full" : "half", lpa);
+ if (macb_mii_probe(bp->dev) != 0) {
+ goto err_out_unregister_bus;
+ }
- mii->full_duplex = duplex;
+ return 0;
- /* Let the MAC know about the new link state */
- macb_set_media(bp, media);
+err_out_unregister_bus:
+ mdiobus_unregister(bp->mii_bus);
+err_out_free_mdio_irq:
+ kfree(bp->mii_bus->irq);
+err_out_free_mdiobus:
+ mdiobus_free(bp->mii_bus);
+err_out:
+ return err;
}
static void macb_update_stats(struct macb *bp)
*p += __raw_readl(reg);
}
-static void macb_periodic_task(struct work_struct *work)
-{
- struct macb *bp = container_of(work, struct macb, periodic_task.work);
-
- macb_update_stats(bp);
- macb_check_media(bp, 1, 0);
-
- schedule_delayed_work(&bp->periodic_task, HZ);
-}
-
static void macb_tx(struct macb *bp)
{
unsigned int tail;
dev_dbg(&bp->pdev->dev, "macb_tx status = %02lx\n",
(unsigned long)status);
- if (status & MACB_BIT(UND)) {
- printk(KERN_ERR "%s: TX underrun, resetting buffers\n",
- bp->dev->name);
+ if (status & (MACB_BIT(UND) | MACB_BIT(TSR_RLE))) {
+ int i;
+ printk(KERN_ERR "%s: TX %s, resetting buffers\n",
+ bp->dev->name, status & MACB_BIT(UND) ?
+ "underrun" : "retry limit exceeded");
+
+ /* Transfer ongoing, disable transmitter, to avoid confusion */
+ if (status & MACB_BIT(TGO))
+ macb_writel(bp, NCR, macb_readl(bp, NCR) & ~MACB_BIT(TE));
+
+ head = bp->tx_head;
+
+ /*Mark all the buffer as used to avoid sending a lost buffer*/
+ for (i = 0; i < TX_RING_SIZE; i++)
+ bp->tx_ring[i].ctrl = MACB_BIT(TX_USED);
+
+ /* Add wrap bit */
+ bp->tx_ring[TX_RING_SIZE - 1].ctrl |= MACB_BIT(TX_WRAP);
+
+ /* free transmit buffer in upper layer*/
+ for (tail = bp->tx_tail; tail != head; tail = NEXT_TX(tail)) {
+ struct ring_info *rp = &bp->tx_skb[tail];
+ struct sk_buff *skb = rp->skb;
+
+ BUG_ON(skb == NULL);
+
+ rmb();
+
+ dma_unmap_single(&bp->pdev->dev, rp->mapping, skb->len,
+ DMA_TO_DEVICE);
+ rp->skb = NULL;
+ dev_kfree_skb_irq(skb);
+ }
+
bp->tx_head = bp->tx_tail = 0;
+
+ /* Enable the transmitter again */
+ if (status & MACB_BIT(TGO))
+ macb_writel(bp, NCR, macb_readl(bp, NCR) | MACB_BIT(TE));
}
if (!(status & MACB_BIT(COMP)))
}
skb_reserve(skb, RX_OFFSET);
- skb->dev = bp->dev;
- skb->ip_summed = CHECKSUM_NONE;
+ skb_checksum_none_assert(skb);
skb_put(skb, len);
for (frag = first_frag; ; frag = NEXT_RX(frag)) {
BUG_ON(frag != last_frag);
frag_len = len - offset;
}
- memcpy(skb->data + offset,
- bp->rx_buffers + (RX_BUFFER_SIZE * frag),
- frag_len);
+ skb_copy_to_linear_data_offset(skb, offset,
+ (bp->rx_buffers +
+ (RX_BUFFER_SIZE * frag)),
+ frag_len);
offset += RX_BUFFER_SIZE;
bp->rx_ring[frag].addr &= ~MACB_BIT(RX_USED);
wmb();
bp->stats.rx_packets++;
bp->stats.rx_bytes += len;
- bp->dev->last_rx = jiffies;
dev_dbg(&bp->pdev->dev, "received skb of length %u, csum: %08x\n",
skb->len, skb->csum);
netif_receive_skb(skb);
return received;
}
-static int macb_poll(struct net_device *dev, int *budget)
+static int macb_poll(struct napi_struct *napi, int budget)
{
- struct macb *bp = netdev_priv(dev);
- int orig_budget, work_done, retval = 0;
+ struct macb *bp = container_of(napi, struct macb, napi);
+ int work_done;
u32 status;
status = macb_readl(bp, RSR);
macb_writel(bp, RSR, status);
- if (!status) {
- /*
- * This may happen if an interrupt was pending before
- * this function was called last time, and no packets
- * have been received since.
- */
- netif_rx_complete(dev);
- goto out;
- }
+ work_done = 0;
dev_dbg(&bp->pdev->dev, "poll: status = %08lx, budget = %d\n",
- (unsigned long)status, *budget);
-
- if (!(status & MACB_BIT(REC))) {
- dev_warn(&bp->pdev->dev,
- "No RX buffers complete, status = %02lx\n",
- (unsigned long)status);
- netif_rx_complete(dev);
- goto out;
- }
+ (unsigned long)status, budget);
- orig_budget = *budget;
- if (orig_budget > dev->quota)
- orig_budget = dev->quota;
+ work_done = macb_rx(bp, budget);
+ if (work_done < budget) {
+ napi_complete(napi);
- work_done = macb_rx(bp, orig_budget);
- if (work_done < orig_budget) {
- netif_rx_complete(dev);
- retval = 0;
- } else {
- retval = 1;
+ /*
+ * We've done what we can to clean the buffers. Make sure we
+ * get notified when new packets arrive.
+ */
+ macb_writel(bp, IER, MACB_RX_INT_FLAGS);
}
- /*
- * We've done what we can to clean the buffers. Make sure we
- * get notified when new packets arrive.
- */
-out:
- macb_writel(bp, IER, MACB_RX_INT_FLAGS);
-
/* TODO: Handle errors */
- return retval;
+ return work_done;
}
static irqreturn_t macb_interrupt(int irq, void *dev_id)
spin_lock(&bp->lock);
while (status) {
- if (status & MACB_BIT(MFD))
- complete(&bp->mdio_complete);
-
/* close possible race with dev_close */
if (unlikely(!netif_running(dev))) {
macb_writel(bp, IDR, ~0UL);
}
if (status & MACB_RX_INT_FLAGS) {
- if (netif_rx_schedule_prep(dev)) {
- /*
- * There's no point taking any more interrupts
- * until we have processed the buffers
- */
- macb_writel(bp, IDR, MACB_RX_INT_FLAGS);
- dev_dbg(&bp->pdev->dev, "scheduling RX softirq\n");
- __netif_rx_schedule(dev);
+ /*
+ * There's no point taking any more interrupts
+ * until we have processed the buffers. The
+ * scheduling call may fail if the poll routine
+ * is already scheduled, so disable interrupts
+ * now.
+ */
+ macb_writel(bp, IDR, MACB_RX_INT_FLAGS);
+
+ if (napi_schedule_prep(&bp->napi)) {
+ dev_dbg(&bp->pdev->dev,
+ "scheduling RX softirq\n");
+ __napi_schedule(&bp->napi);
}
}
- if (status & (MACB_BIT(TCOMP) | MACB_BIT(ISR_TUND)))
+ if (status & (MACB_BIT(TCOMP) | MACB_BIT(ISR_TUND) |
+ MACB_BIT(ISR_RLE)))
macb_tx(bp);
/*
* add that if/when we get our hands on a full-blown MII PHY.
*/
+ if (status & MACB_BIT(ISR_ROVR)) {
+ /* We missed at least one packet */
+ bp->hw_stats.rx_overruns++;
+ }
+
if (status & MACB_BIT(HRESP)) {
/*
* TODO: Reset the hardware, and maybe move the printk
return IRQ_HANDLED;
}
+#ifdef CONFIG_NET_POLL_CONTROLLER
+/*
+ * Polling receive - used by netconsole and other diagnostic tools
+ * to allow network i/o with interrupts disabled.
+ */
+static void macb_poll_controller(struct net_device *dev)
+{
+ unsigned long flags;
+
+ local_irq_save(flags);
+ macb_interrupt(dev->irq, dev);
+ local_irq_restore(flags);
+}
+#endif
+
static int macb_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct macb *bp = netdev_priv(dev);
dma_addr_t mapping;
unsigned int len, entry;
u32 ctrl;
+ unsigned long flags;
#ifdef DEBUG
int i;
dev_dbg(&bp->pdev->dev,
"start_xmit: len %u head %p data %p tail %p end %p\n",
- skb->len, skb->head, skb->data, skb->tail, skb->end);
+ skb->len, skb->head, skb->data,
+ skb_tail_pointer(skb), skb_end_pointer(skb));
dev_dbg(&bp->pdev->dev,
"data:");
for (i = 0; i < 16; i++)
#endif
len = skb->len;
- spin_lock_irq(&bp->lock);
+ spin_lock_irqsave(&bp->lock, flags);
/* This is a hard error, log it. */
if (TX_BUFFS_AVAIL(bp) < 1) {
netif_stop_queue(dev);
- spin_unlock_irq(&bp->lock);
+ spin_unlock_irqrestore(&bp->lock, flags);
dev_err(&bp->pdev->dev,
"BUG! Tx Ring full when queue awake!\n");
dev_dbg(&bp->pdev->dev, "tx_head = %u, tx_tail = %u\n",
bp->tx_head, bp->tx_tail);
- return 1;
+ return NETDEV_TX_BUSY;
}
entry = bp->tx_head;
entry = NEXT_TX(entry);
bp->tx_head = entry;
+ skb_tx_timestamp(skb);
+
macb_writel(bp, NCR, macb_readl(bp, NCR) | MACB_BIT(TSTART));
if (TX_BUFFS_AVAIL(bp) < 1)
netif_stop_queue(dev);
- spin_unlock_irq(&bp->lock);
-
- dev->trans_start = jiffies;
+ spin_unlock_irqrestore(&bp->lock, flags);
- return 0;
+ return NETDEV_TX_OK;
}
static void macb_free_consistent(struct macb *bp)
config = macb_readl(bp, NCFGR) & MACB_BF(CLK, -1L);
config |= MACB_BIT(PAE); /* PAuse Enable */
config |= MACB_BIT(DRFCS); /* Discard Rx FCS */
+ config |= MACB_BIT(BIG); /* Receive oversized frames */
if (bp->dev->flags & IFF_PROMISC)
config |= MACB_BIT(CAF); /* Copy All Frames */
if (!(bp->dev->flags & IFF_BROADCAST))
macb_writel(bp, TBQP, bp->tx_ring_dma);
/* Enable TX and RX */
- macb_writel(bp, NCR, MACB_BIT(RE) | MACB_BIT(TE));
+ macb_writel(bp, NCR, MACB_BIT(RE) | MACB_BIT(TE) | MACB_BIT(MPE));
/* Enable interrupts */
macb_writel(bp, IER, (MACB_BIT(RCOMP)
| MACB_BIT(TCOMP)
| MACB_BIT(ISR_ROVR)
| MACB_BIT(HRESP)));
+
+}
+
+/*
+ * The hash address register is 64 bits long and takes up two
+ * locations in the memory map. The least significant bits are stored
+ * in EMAC_HSL and the most significant bits in EMAC_HSH.
+ *
+ * The unicast hash enable and the multicast hash enable bits in the
+ * network configuration register enable the reception of hash matched
+ * frames. The destination address is reduced to a 6 bit index into
+ * the 64 bit hash register using the following hash function. The
+ * hash function is an exclusive or of every sixth bit of the
+ * destination address.
+ *
+ * hi[5] = da[5] ^ da[11] ^ da[17] ^ da[23] ^ da[29] ^ da[35] ^ da[41] ^ da[47]
+ * hi[4] = da[4] ^ da[10] ^ da[16] ^ da[22] ^ da[28] ^ da[34] ^ da[40] ^ da[46]
+ * hi[3] = da[3] ^ da[09] ^ da[15] ^ da[21] ^ da[27] ^ da[33] ^ da[39] ^ da[45]
+ * hi[2] = da[2] ^ da[08] ^ da[14] ^ da[20] ^ da[26] ^ da[32] ^ da[38] ^ da[44]
+ * hi[1] = da[1] ^ da[07] ^ da[13] ^ da[19] ^ da[25] ^ da[31] ^ da[37] ^ da[43]
+ * hi[0] = da[0] ^ da[06] ^ da[12] ^ da[18] ^ da[24] ^ da[30] ^ da[36] ^ da[42]
+ *
+ * da[0] represents the least significant bit of the first byte
+ * received, that is, the multicast/unicast indicator, and da[47]
+ * represents the most significant bit of the last byte received. If
+ * the hash index, hi[n], points to a bit that is set in the hash
+ * register then the frame will be matched according to whether the
+ * frame is multicast or unicast. A multicast match will be signalled
+ * if the multicast hash enable bit is set, da[0] is 1 and the hash
+ * index points to a bit set in the hash register. A unicast match
+ * will be signalled if the unicast hash enable bit is set, da[0] is 0
+ * and the hash index points to a bit set in the hash register. To
+ * receive all multicast frames, the hash register should be set with
+ * all ones and the multicast hash enable bit should be set in the
+ * network configuration register.
+ */
+
+static inline int hash_bit_value(int bitnr, __u8 *addr)
+{
+ if (addr[bitnr / 8] & (1 << (bitnr % 8)))
+ return 1;
+ return 0;
}
-static void macb_init_phy(struct net_device *dev)
+/*
+ * Return the hash index value for the specified address.
+ */
+static int hash_get_index(__u8 *addr)
{
+ int i, j, bitval;
+ int hash_index = 0;
+
+ for (j = 0; j < 6; j++) {
+ for (i = 0, bitval = 0; i < 8; i++)
+ bitval ^= hash_bit_value(i*6 + j, addr);
+
+ hash_index |= (bitval << j);
+ }
+
+ return hash_index;
+}
+
+/*
+ * Add multicast addresses to the internal multicast-hash table.
+ */
+static void macb_sethashtable(struct net_device *dev)
+{
+ struct netdev_hw_addr *ha;
+ unsigned long mc_filter[2];
+ unsigned int bitnr;
struct macb *bp = netdev_priv(dev);
- /* Set some reasonable default settings */
- macb_mdio_write(dev, bp->mii.phy_id, MII_ADVERTISE,
- ADVERTISE_CSMA | ADVERTISE_ALL);
- macb_mdio_write(dev, bp->mii.phy_id, MII_BMCR,
- (BMCR_SPEED100 | BMCR_ANENABLE
- | BMCR_ANRESTART | BMCR_FULLDPLX));
+ mc_filter[0] = mc_filter[1] = 0;
+
+ netdev_for_each_mc_addr(ha, dev) {
+ bitnr = hash_get_index(ha->addr);
+ mc_filter[bitnr >> 5] |= 1 << (bitnr & 31);
+ }
+
+ macb_writel(bp, HRB, mc_filter[0]);
+ macb_writel(bp, HRT, mc_filter[1]);
+}
+
+/*
+ * Enable/Disable promiscuous and multicast modes.
+ */
+static void macb_set_rx_mode(struct net_device *dev)
+{
+ unsigned long cfg;
+ struct macb *bp = netdev_priv(dev);
+
+ cfg = macb_readl(bp, NCFGR);
+
+ if (dev->flags & IFF_PROMISC)
+ /* Enable promiscuous mode */
+ cfg |= MACB_BIT(CAF);
+ else if (dev->flags & (~IFF_PROMISC))
+ /* Disable promiscuous mode */
+ cfg &= ~MACB_BIT(CAF);
+
+ if (dev->flags & IFF_ALLMULTI) {
+ /* Enable all multicast mode */
+ macb_writel(bp, HRB, -1);
+ macb_writel(bp, HRT, -1);
+ cfg |= MACB_BIT(NCFGR_MTI);
+ } else if (!netdev_mc_empty(dev)) {
+ /* Enable specific multicasts */
+ macb_sethashtable(dev);
+ cfg |= MACB_BIT(NCFGR_MTI);
+ } else if (dev->flags & (~IFF_ALLMULTI)) {
+ /* Disable all multicast mode */
+ macb_writel(bp, HRB, 0);
+ macb_writel(bp, HRT, 0);
+ cfg &= ~MACB_BIT(NCFGR_MTI);
+ }
+
+ macb_writel(bp, NCFGR, cfg);
}
static int macb_open(struct net_device *dev)
dev_dbg(&bp->pdev->dev, "open\n");
+ /* if the phy is not yet register, retry later*/
+ if (!bp->phy_dev)
+ return -EAGAIN;
+
if (!is_valid_ether_addr(dev->dev_addr))
return -EADDRNOTAVAIL;
return err;
}
+ napi_enable(&bp->napi);
+
macb_init_rings(bp);
macb_init_hw(bp);
- macb_init_phy(dev);
- macb_check_media(bp, 1, 1);
- netif_start_queue(dev);
+ /* schedule a link state check */
+ phy_start(bp->phy_dev);
- schedule_delayed_work(&bp->periodic_task, HZ);
+ netif_start_queue(dev);
return 0;
}
struct macb *bp = netdev_priv(dev);
unsigned long flags;
- cancel_rearming_delayed_work(&bp->periodic_task);
-
netif_stop_queue(dev);
+ napi_disable(&bp->napi);
+
+ if (bp->phy_dev)
+ phy_stop(bp->phy_dev);
spin_lock_irqsave(&bp->lock, flags);
macb_reset_hw(bp);
struct net_device_stats *nstat = &bp->stats;
struct macb_stats *hwstat = &bp->hw_stats;
+ /* read stats from hardware */
+ macb_update_stats(bp);
+
/* Convert HW stats into netdevice stats */
nstat->rx_errors = (hwstat->rx_fcs_errors +
hwstat->rx_align_errors +
hwstat->rx_jabbers +
hwstat->rx_undersize_pkts +
hwstat->rx_length_mismatch);
- nstat->rx_over_errors = hwstat->rx_resource_errors;
+ nstat->rx_over_errors = hwstat->rx_resource_errors +
+ hwstat->rx_overruns;
nstat->rx_crc_errors = hwstat->rx_fcs_errors;
nstat->rx_frame_errors = hwstat->rx_align_errors;
nstat->rx_fifo_errors = hwstat->rx_overruns;
static int macb_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
struct macb *bp = netdev_priv(dev);
- int ret;
- unsigned long flags;
+ struct phy_device *phydev = bp->phy_dev;
- spin_lock_irqsave(&bp->lock, flags);
- ret = mii_ethtool_gset(&bp->mii, cmd);
- spin_unlock_irqrestore(&bp->lock, flags);
+ if (!phydev)
+ return -ENODEV;
- return ret;
+ return phy_ethtool_gset(phydev, cmd);
}
static int macb_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
struct macb *bp = netdev_priv(dev);
- int ret;
- unsigned long flags;
+ struct phy_device *phydev = bp->phy_dev;
- spin_lock_irqsave(&bp->lock, flags);
- ret = mii_ethtool_sset(&bp->mii, cmd);
- spin_unlock_irqrestore(&bp->lock, flags);
+ if (!phydev)
+ return -ENODEV;
- return ret;
+ return phy_ethtool_sset(phydev, cmd);
}
-static void macb_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
+static void macb_get_drvinfo(struct net_device *dev,
+ struct ethtool_drvinfo *info)
{
struct macb *bp = netdev_priv(dev);
strcpy(info->driver, bp->pdev->dev.driver->name);
strcpy(info->version, "$Revision: 1.14 $");
- strcpy(info->bus_info, bp->pdev->dev.bus_id);
-}
-
-static int macb_nway_reset(struct net_device *dev)
-{
- struct macb *bp = netdev_priv(dev);
- return mii_nway_restart(&bp->mii);
+ strcpy(info->bus_info, dev_name(&bp->pdev->dev));
}
-static struct ethtool_ops macb_ethtool_ops = {
+static const struct ethtool_ops macb_ethtool_ops = {
.get_settings = macb_get_settings,
.set_settings = macb_set_settings,
.get_drvinfo = macb_get_drvinfo,
- .nway_reset = macb_nway_reset,
.get_link = ethtool_op_get_link,
};
static int macb_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
{
struct macb *bp = netdev_priv(dev);
- int ret;
- unsigned long flags;
+ struct phy_device *phydev = bp->phy_dev;
if (!netif_running(dev))
return -EINVAL;
- spin_lock_irqsave(&bp->lock, flags);
- ret = generic_mii_ioctl(&bp->mii, if_mii(rq), cmd, NULL);
- spin_unlock_irqrestore(&bp->lock, flags);
-
- return ret;
-}
-
-static ssize_t macb_mii_show(const struct device *_dev, char *buf,
- unsigned long addr)
-{
- struct net_device *dev = to_net_dev(_dev);
- struct macb *bp = netdev_priv(dev);
- ssize_t ret = -EINVAL;
-
- if (netif_running(dev)) {
- int value;
- value = macb_mdio_read(dev, bp->mii.phy_id, addr);
- ret = sprintf(buf, "0x%04x\n", (uint16_t)value);
- }
+ if (!phydev)
+ return -ENODEV;
- return ret;
+ return phy_mii_ioctl(phydev, rq, cmd);
}
-#define MII_ENTRY(name, addr) \
-static ssize_t show_##name(struct device *_dev, \
- struct device_attribute *attr, \
- char *buf) \
-{ \
- return macb_mii_show(_dev, buf, addr); \
-} \
-static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL)
-
-MII_ENTRY(bmcr, MII_BMCR);
-MII_ENTRY(bmsr, MII_BMSR);
-MII_ENTRY(physid1, MII_PHYSID1);
-MII_ENTRY(physid2, MII_PHYSID2);
-MII_ENTRY(advertise, MII_ADVERTISE);
-MII_ENTRY(lpa, MII_LPA);
-MII_ENTRY(expansion, MII_EXPANSION);
-
-static struct attribute *macb_mii_attrs[] = {
- &dev_attr_bmcr.attr,
- &dev_attr_bmsr.attr,
- &dev_attr_physid1.attr,
- &dev_attr_physid2.attr,
- &dev_attr_advertise.attr,
- &dev_attr_lpa.attr,
- &dev_attr_expansion.attr,
- NULL,
-};
-
-static struct attribute_group macb_mii_group = {
- .name = "mii",
- .attrs = macb_mii_attrs,
+static const struct net_device_ops macb_netdev_ops = {
+ .ndo_open = macb_open,
+ .ndo_stop = macb_close,
+ .ndo_start_xmit = macb_start_xmit,
+ .ndo_set_multicast_list = macb_set_rx_mode,
+ .ndo_get_stats = macb_get_stats,
+ .ndo_do_ioctl = macb_ioctl,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_change_mtu = eth_change_mtu,
+ .ndo_set_mac_address = eth_mac_addr,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = macb_poll_controller,
+#endif
};
-static void macb_unregister_sysfs(struct net_device *net)
-{
- struct device *_dev = &net->dev;
-
- sysfs_remove_group(&_dev->kobj, &macb_mii_group);
-}
-
-static int macb_register_sysfs(struct net_device *net)
-{
- struct device *_dev = &net->dev;
- int ret;
-
- ret = sysfs_create_group(&_dev->kobj, &macb_mii_group);
- if (ret)
- printk(KERN_WARNING
- "%s: sysfs mii attribute registration failed: %d\n",
- net->name, ret);
- return ret;
-}
-static int __devinit macb_probe(struct platform_device *pdev)
+static int __init macb_probe(struct platform_device *pdev)
{
struct eth_platform_data *pdata;
struct resource *regs;
struct net_device *dev;
struct macb *bp;
+ struct phy_device *phydev;
unsigned long pclk_hz;
u32 config;
int err = -ENXIO;
goto err_out;
}
- SET_MODULE_OWNER(dev);
SET_NETDEV_DEV(dev, &pdev->dev);
/* TODO: Actually, we have some interesting features... */
clk_enable(bp->hclk);
#endif
- bp->regs = ioremap(regs->start, regs->end - regs->start + 1);
+ bp->regs = ioremap(regs->start, resource_size(regs));
if (!bp->regs) {
dev_err(&pdev->dev, "failed to map registers, aborting.\n");
err = -ENOMEM;
}
dev->irq = platform_get_irq(pdev, 0);
- err = request_irq(dev->irq, macb_interrupt, SA_SAMPLE_RANDOM,
- dev->name, dev);
+ err = request_irq(dev->irq, macb_interrupt, 0, dev->name, dev);
if (err) {
printk(KERN_ERR
"%s: Unable to request IRQ %d (error %d)\n",
goto err_out_iounmap;
}
- dev->open = macb_open;
- dev->stop = macb_close;
- dev->hard_start_xmit = macb_start_xmit;
- dev->get_stats = macb_get_stats;
- dev->do_ioctl = macb_ioctl;
- dev->poll = macb_poll;
- dev->weight = 64;
+ dev->netdev_ops = &macb_netdev_ops;
+ netif_napi_add(dev, &bp->napi, macb_poll, 64);
dev->ethtool_ops = &macb_ethtool_ops;
dev->base_addr = regs->start;
- INIT_DELAYED_WORK(&bp->periodic_task, macb_periodic_task);
- mutex_init(&bp->mdio_mutex);
- init_completion(&bp->mdio_complete);
-
/* Set MII management clock divider */
pclk_hz = clk_get_rate(bp->pclk);
if (pclk_hz <= 20000000)
config = MACB_BF(CLK, MACB_CLK_DIV64);
macb_writel(bp, NCFGR, config);
- bp->mii.dev = dev;
- bp->mii.mdio_read = macb_mdio_read;
- bp->mii.mdio_write = macb_mdio_write;
- bp->mii.phy_id_mask = 0x1f;
- bp->mii.reg_num_mask = 0x1f;
-
macb_get_hwaddr(bp);
- err = macb_phy_probe(bp);
- if (err) {
- dev_err(&pdev->dev, "Failed to detect PHY, aborting.\n");
- goto err_out_free_irq;
- }
-
pdata = pdev->dev.platform_data;
+
if (pdata && pdata->is_rmii)
#if defined(CONFIG_ARCH_AT91)
macb_writel(bp, USRIO, (MACB_BIT(RMII) | MACB_BIT(CLKEN)) );
goto err_out_free_irq;
}
+ if (macb_mii_init(bp) != 0) {
+ goto err_out_unregister_netdev;
+ }
+
platform_set_drvdata(pdev, dev);
- macb_register_sysfs(dev);
+ printk(KERN_INFO "%s: Atmel MACB at 0x%08lx irq %d (%pM)\n",
+ dev->name, dev->base_addr, dev->irq, dev->dev_addr);
- printk(KERN_INFO "%s: Atmel MACB at 0x%08lx irq %d "
- "(%02x:%02x:%02x:%02x:%02x:%02x)\n",
- dev->name, dev->base_addr, dev->irq,
- dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
- dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
+ phydev = bp->phy_dev;
+ printk(KERN_INFO "%s: attached PHY driver [%s] "
+ "(mii_bus:phy_addr=%s, irq=%d)\n", dev->name,
+ phydev->drv->name, dev_name(&phydev->dev), phydev->irq);
return 0;
+err_out_unregister_netdev:
+ unregister_netdev(dev);
err_out_free_irq:
free_irq(dev->irq, dev);
err_out_iounmap:
clk_put(bp->hclk);
#endif
clk_disable(bp->pclk);
+#ifndef CONFIG_ARCH_AT91
err_out_put_pclk:
+#endif
clk_put(bp->pclk);
err_out_free_dev:
free_netdev(dev);
return err;
}
-static int __devexit macb_remove(struct platform_device *pdev)
+static int __exit macb_remove(struct platform_device *pdev)
{
struct net_device *dev;
struct macb *bp;
if (dev) {
bp = netdev_priv(dev);
- macb_unregister_sysfs(dev);
+ if (bp->phy_dev)
+ phy_disconnect(bp->phy_dev);
+ mdiobus_unregister(bp->mii_bus);
+ kfree(bp->mii_bus->irq);
+ mdiobus_free(bp->mii_bus);
unregister_netdev(dev);
free_irq(dev->irq, dev);
iounmap(bp->regs);
return 0;
}
+#ifdef CONFIG_PM
+static int macb_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ struct net_device *netdev = platform_get_drvdata(pdev);
+ struct macb *bp = netdev_priv(netdev);
+
+ netif_device_detach(netdev);
+
+#ifndef CONFIG_ARCH_AT91
+ clk_disable(bp->hclk);
+#endif
+ clk_disable(bp->pclk);
+
+ return 0;
+}
+
+static int macb_resume(struct platform_device *pdev)
+{
+ struct net_device *netdev = platform_get_drvdata(pdev);
+ struct macb *bp = netdev_priv(netdev);
+
+ clk_enable(bp->pclk);
+#ifndef CONFIG_ARCH_AT91
+ clk_enable(bp->hclk);
+#endif
+
+ netif_device_attach(netdev);
+
+ return 0;
+}
+#else
+#define macb_suspend NULL
+#define macb_resume NULL
+#endif
+
static struct platform_driver macb_driver = {
- .probe = macb_probe,
- .remove = __devexit_p(macb_remove),
+ .remove = __exit_p(macb_remove),
+ .suspend = macb_suspend,
+ .resume = macb_resume,
.driver = {
.name = "macb",
+ .owner = THIS_MODULE,
},
};
static int __init macb_init(void)
{
- return platform_driver_register(&macb_driver);
+ return platform_driver_probe(&macb_driver, macb_probe);
}
static void __exit macb_exit(void)
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Atmel MACB Ethernet driver");
-MODULE_AUTHOR("Haavard Skinnemoen <hskinnemoen@atmel.com>");
+MODULE_AUTHOR("Haavard Skinnemoen (Atmel)");
+MODULE_ALIAS("platform:macb");
Code Review / linux-2.6.git / blobdiff