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Message-Id: <200901151647.38001.florian@openwrt.org>
Date: Thu, 15 Jan 2009 16:47:37 +0100
From: Florian Fainelli <florian@...nwrt.org>
To: davem@...emloft.net, jeff@...zik.org, netdev@...r.kernel.org,
Manuel Lauss <mano@...rinelk.homelinux.net>
Subject: [PATCH] au1000_eth: reorder functions
This patch reorders functions so that we can remove
the forward declarations.
Signed-off-by: Florian Fainelli <florian@...nwrt.org>
---
diff --git a/drivers/net/au1000_eth.c b/drivers/net/au1000_eth.c
index 019b13c..41925dd 100644
--- a/drivers/net/au1000_eth.c
+++ b/drivers/net/au1000_eth.c
@@ -81,24 +81,6 @@ MODULE_AUTHOR(DRV_AUTHOR);
MODULE_DESCRIPTION(DRV_DESC);
MODULE_LICENSE("GPL");
-// prototypes
-static void hard_stop(struct net_device *);
-static void enable_rx_tx(struct net_device *dev);
-static struct net_device * au1000_probe(int port_num);
-static int au1000_init(struct net_device *);
-static int au1000_open(struct net_device *);
-static int au1000_close(struct net_device *);
-static int au1000_tx(struct sk_buff *, struct net_device *);
-static int au1000_rx(struct net_device *);
-static irqreturn_t au1000_interrupt(int, void *);
-static void au1000_tx_timeout(struct net_device *);
-static void set_rx_mode(struct net_device *);
-static int au1000_ioctl(struct net_device *, struct ifreq *, int);
-static int au1000_mdio_read(struct net_device *, int, int);
-static void au1000_mdio_write(struct net_device *, int, int, u16);
-static void au1000_adjust_link(struct net_device *);
-static void enable_mac(struct net_device *, int);
-
/*
* Theory of operation
*
@@ -188,6 +170,26 @@ struct au1000_private *au_macs[NUM_ETH_INTERFACES];
# error MAC0-associated PHY attached 2nd MACs MII bus not supported yet
#endif
+static void enable_mac(struct net_device *dev, int force_reset)
+{
+ unsigned long flags;
+ struct au1000_private *aup = (struct au1000_private *) dev->priv;
+
+ spin_lock_irqsave(&aup->lock, flags);
+
+ if(force_reset || (!aup->mac_enabled)) {
+ *aup->enable = MAC_EN_CLOCK_ENABLE;
+ au_sync_delay(2);
+ *aup->enable = (MAC_EN_RESET0 | MAC_EN_RESET1 | MAC_EN_RESET2
+ | MAC_EN_CLOCK_ENABLE);
+ au_sync_delay(2);
+
+ aup->mac_enabled = 1;
+ }
+
+ spin_unlock_irqrestore(&aup->lock, flags);
+}
+
/*
* MII operations
*/
@@ -281,6 +283,107 @@ static int au1000_mdiobus_reset(struct mii_bus *bus)
return 0;
}
+static void hard_stop(struct net_device *dev)
+{
+ struct au1000_private *aup = (struct au1000_private *) dev->priv;
+
+ if (au1000_debug > 4)
+ printk(KERN_INFO "%s: hard stop\n", dev->name);
+
+ aup->mac->control &= ~(MAC_RX_ENABLE | MAC_TX_ENABLE);
+ au_sync_delay(10);
+}
+
+static void enable_rx_tx(struct net_device *dev)
+{
+ struct au1000_private *aup = (struct au1000_private *) dev->priv;
+
+ if (au1000_debug > 4)
+ printk(KERN_INFO "%s: enable_rx_tx\n", dev->name);
+
+ aup->mac->control |= (MAC_RX_ENABLE | MAC_TX_ENABLE);
+ au_sync_delay(10);
+}
+
+static void
+au1000_adjust_link(struct net_device *dev)
+{
+ struct au1000_private *aup = (struct au1000_private *) dev->priv;
+ struct phy_device *phydev = aup->phy_dev;
+ unsigned long flags;
+
+ int status_change = 0;
+
+ BUG_ON(!aup->phy_dev);
+
+ spin_lock_irqsave(&aup->lock, flags);
+
+ if (phydev->link && (aup->old_speed != phydev->speed)) {
+ // speed changed
+
+ switch(phydev->speed) {
+ case SPEED_10:
+ case SPEED_100:
+ break;
+ default:
+ printk(KERN_WARNING
+ "%s: Speed (%d) is not 10/100 ???\n",
+ dev->name, phydev->speed);
+ break;
+ }
+
+ aup->old_speed = phydev->speed;
+
+ status_change = 1;
+ }
+
+ if (phydev->link && (aup->old_duplex != phydev->duplex)) {
+ // duplex mode changed
+
+ /* switching duplex mode requires to disable rx and tx! */
+ hard_stop(dev);
+
+ if (DUPLEX_FULL == phydev->duplex)
+ aup->mac->control = ((aup->mac->control
+ | MAC_FULL_DUPLEX)
+ & ~MAC_DISABLE_RX_OWN);
+ else
+ aup->mac->control = ((aup->mac->control
+ & ~MAC_FULL_DUPLEX)
+ | MAC_DISABLE_RX_OWN);
+ au_sync_delay(1);
+
+ enable_rx_tx(dev);
+ aup->old_duplex = phydev->duplex;
+
+ status_change = 1;
+ }
+
+ if(phydev->link != aup->old_link) {
+ // link state changed
+
+ if (!phydev->link) {
+ /* link went down */
+ aup->old_speed = 0;
+ aup->old_duplex = -1;
+ }
+
+ aup->old_link = phydev->link;
+ status_change = 1;
+ }
+
+ spin_unlock_irqrestore(&aup->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 int mii_probe (struct net_device *dev)
{
struct au1000_private *const aup = (struct au1000_private *) dev->priv;
@@ -413,47 +516,8 @@ void ReleaseDB(struct au1000_private *aup, db_dest_t *pDB)
aup->pDBfree = pDB;
}
-static void enable_rx_tx(struct net_device *dev)
-{
- struct au1000_private *aup = (struct au1000_private *) dev->priv;
- if (au1000_debug > 4)
- printk(KERN_INFO "%s: enable_rx_tx\n", dev->name);
- aup->mac->control |= (MAC_RX_ENABLE | MAC_TX_ENABLE);
- au_sync_delay(10);
-}
-
-static void hard_stop(struct net_device *dev)
-{
- struct au1000_private *aup = (struct au1000_private *) dev->priv;
-
- if (au1000_debug > 4)
- printk(KERN_INFO "%s: hard stop\n", dev->name);
-
- aup->mac->control &= ~(MAC_RX_ENABLE | MAC_TX_ENABLE);
- au_sync_delay(10);
-}
-
-static void enable_mac(struct net_device *dev, int force_reset)
-{
- unsigned long flags;
- struct au1000_private *aup = (struct au1000_private *) dev->priv;
-
- spin_lock_irqsave(&aup->lock, flags);
-
- if(force_reset || (!aup->mac_enabled)) {
- *aup->enable = MAC_EN_CLOCK_ENABLE;
- au_sync_delay(2);
- *aup->enable = (MAC_EN_RESET0 | MAC_EN_RESET1 | MAC_EN_RESET2
- | MAC_EN_CLOCK_ENABLE);
- au_sync_delay(2);
-
- aup->mac_enabled = 1;
- }
-
- spin_unlock_irqrestore(&aup->lock, flags);
-}
static void reset_mac_unlocked(struct net_device *dev)
{
@@ -542,29 +606,7 @@ static struct {
static int num_ifs;
-/*
- * Setup the base address and interrupt of the Au1xxx ethernet macs
- * based on cpu type and whether the interface is enabled in sys_pinfunc
- * register. The last interface is enabled if SYS_PF_NI2 (bit 4) is 0.
- */
-static int __init au1000_init_module(void)
-{
- int ni = (int)((au_readl(SYS_PINFUNC) & (u32)(SYS_PF_NI2)) >> 4);
- struct net_device *dev;
- int i, found_one = 0;
-
- num_ifs = NUM_ETH_INTERFACES - ni;
- for(i = 0; i < num_ifs; i++) {
- dev = au1000_probe(i);
- iflist[i].dev = dev;
- if (dev)
- found_one++;
- }
- if (!found_one)
- return -ENODEV;
- return 0;
-}
/*
* ethtool operations
@@ -612,198 +654,171 @@ static const struct ethtool_ops au1000_ethtool_ops = {
.get_link = ethtool_op_get_link,
};
-static struct net_device * au1000_probe(int port_num)
+static inline void update_rx_stats(struct net_device *dev, u32 status)
{
- static unsigned version_printed = 0;
- struct au1000_private *aup = NULL;
- struct net_device *dev = NULL;
- db_dest_t *pDB, *pDBfree;
- char ethaddr[6];
- int irq, i, err;
- u32 base, macen;
-
- if (port_num >= NUM_ETH_INTERFACES)
- return NULL;
-
- base = CPHYSADDR(iflist[port_num].base_addr );
- macen = CPHYSADDR(iflist[port_num].macen_addr);
- irq = iflist[port_num].irq;
-
- if (!request_mem_region( base, MAC_IOSIZE, "Au1x00 ENET") ||
- !request_mem_region(macen, 4, "Au1x00 ENET"))
- return NULL;
-
- if (version_printed++ == 0)
- printk("%s version %s %s\n", DRV_NAME, DRV_VERSION, DRV_AUTHOR);
+ struct au1000_private *aup = (struct au1000_private *) dev->priv;
+ struct net_device_stats *ps = &dev->stats;
- dev = alloc_etherdev(sizeof(struct au1000_private));
- if (!dev) {
- printk(KERN_ERR "%s: alloc_etherdev failed\n", DRV_NAME);
- return NULL;
- }
+ ps->rx_packets++;
+ if (status & RX_MCAST_FRAME)
+ ps->multicast++;
- if ((err = register_netdev(dev)) != 0) {
- printk(KERN_ERR "%s: Cannot register net device, error %d\n",
- DRV_NAME, err);
- free_netdev(dev);
- return NULL;
+ if (status & RX_ERROR) {
+ ps->rx_errors++;
+ if (status & RX_MISSED_FRAME)
+ ps->rx_missed_errors++;
+ if (status & (RX_OVERLEN | RX_OVERLEN | RX_LEN_ERROR))
+ ps->rx_length_errors++;
+ if (status & RX_CRC_ERROR)
+ ps->rx_crc_errors++;
+ if (status & RX_COLL)
+ ps->collisions++;
}
+ else
+ ps->rx_bytes += status & RX_FRAME_LEN_MASK;
- printk("%s: Au1xx0 Ethernet found at 0x%x, irq %d\n",
- dev->name, base, irq);
-
- aup = dev->priv;
-
- spin_lock_init(&aup->lock);
+}
- /* Allocate the data buffers */
- /* Snooping works fine with eth on all au1xxx */
- aup->vaddr = (u32)dma_alloc_noncoherent(NULL, MAX_BUF_SIZE *
- (NUM_TX_BUFFS + NUM_RX_BUFFS),
- &aup->dma_addr, 0);
- if (!aup->vaddr) {
- free_netdev(dev);
- release_mem_region( base, MAC_IOSIZE);
- release_mem_region(macen, 4);
- return NULL;
- }
+/*
+ * Au1000 receive routine.
+ */
+static int au1000_rx(struct net_device *dev)
+{
+ struct au1000_private *aup = (struct au1000_private *) dev->priv;
+ struct sk_buff *skb;
+ volatile rx_dma_t *prxd;
+ u32 buff_stat, status;
+ db_dest_t *pDB;
+ u32 frmlen;
- /* aup->mac is the base address of the MAC's registers */
- aup->mac = (volatile mac_reg_t *)iflist[port_num].base_addr;
+ if (au1000_debug > 5)
+ printk("%s: au1000_rx head %d\n", dev->name, aup->rx_head);
- /* Setup some variables for quick register address access */
- aup->enable = (volatile u32 *)iflist[port_num].macen_addr;
- aup->mac_id = port_num;
- au_macs[port_num] = aup;
+ prxd = aup->rx_dma_ring[aup->rx_head];
+ buff_stat = prxd->buff_stat;
+ while (buff_stat & RX_T_DONE) {
+ status = prxd->status;
+ pDB = aup->rx_db_inuse[aup->rx_head];
+ update_rx_stats(dev, status);
+ if (!(status & RX_ERROR)) {
- if (port_num == 0) {
- if (prom_get_ethernet_addr(ethaddr) == 0)
- memcpy(au1000_mac_addr, ethaddr, sizeof(au1000_mac_addr));
+ /* good frame */
+ frmlen = (status & RX_FRAME_LEN_MASK);
+ frmlen -= 4; /* Remove FCS */
+ skb = dev_alloc_skb(frmlen + 2);
+ if (skb == NULL) {
+ printk(KERN_ERR
+ "%s: Memory squeeze, dropping packet.\n",
+ dev->name);
+ dev->stats.rx_dropped++;
+ continue;
+ }
+ skb_reserve(skb, 2); /* 16 byte IP header align */
+ skb_copy_to_linear_data(skb,
+ (unsigned char *)pDB->vaddr, frmlen);
+ skb_put(skb, frmlen);
+ skb->protocol = eth_type_trans(skb, dev);
+ netif_rx(skb); /* pass the packet to upper layers */
+ }
else {
- printk(KERN_INFO "%s: No MAC address found\n",
- dev->name);
- /* Use the hard coded MAC addresses */
+ if (au1000_debug > 4) {
+ if (status & RX_MISSED_FRAME)
+ printk("rx miss\n");
+ if (status & RX_WDOG_TIMER)
+ printk("rx wdog\n");
+ if (status & RX_RUNT)
+ printk("rx runt\n");
+ if (status & RX_OVERLEN)
+ printk("rx overlen\n");
+ if (status & RX_COLL)
+ printk("rx coll\n");
+ if (status & RX_MII_ERROR)
+ printk("rx mii error\n");
+ if (status & RX_CRC_ERROR)
+ printk("rx crc error\n");
+ if (status & RX_LEN_ERROR)
+ printk("rx len error\n");
+ if (status & RX_U_CNTRL_FRAME)
+ printk("rx u control frame\n");
+ if (status & RX_MISSED_FRAME)
+ printk("rx miss\n");
+ }
}
+ prxd->buff_stat = (u32)(pDB->dma_addr | RX_DMA_ENABLE);
+ aup->rx_head = (aup->rx_head + 1) & (NUM_RX_DMA - 1);
+ au_sync();
- setup_hw_rings(aup, MAC0_RX_DMA_ADDR, MAC0_TX_DMA_ADDR);
- } else if (port_num == 1)
- setup_hw_rings(aup, MAC1_RX_DMA_ADDR, MAC1_TX_DMA_ADDR);
-
- /*
- * Assign to the Ethernet ports two consecutive MAC addresses
- * to match those that are printed on their stickers
- */
- memcpy(dev->dev_addr, au1000_mac_addr, sizeof(au1000_mac_addr));
- dev->dev_addr[5] += port_num;
-
- *aup->enable = 0;
- aup->mac_enabled = 0;
-
- aup->mii_bus = mdiobus_alloc();
- if (aup->mii_bus == NULL)
- goto err_out;
-
- aup->mii_bus->priv = dev;
- aup->mii_bus->read = au1000_mdiobus_read;
- aup->mii_bus->write = au1000_mdiobus_write;
- aup->mii_bus->reset = au1000_mdiobus_reset;
- aup->mii_bus->name = "au1000_eth_mii";
- snprintf(aup->mii_bus->id, MII_BUS_ID_SIZE, "%x", aup->mac_id);
- aup->mii_bus->irq = kmalloc(sizeof(int)*PHY_MAX_ADDR, GFP_KERNEL);
- for(i = 0; i < PHY_MAX_ADDR; ++i)
- aup->mii_bus->irq[i] = PHY_POLL;
-
- /* if known, set corresponding PHY IRQs */
-#if defined(AU1XXX_PHY_STATIC_CONFIG)
-# if defined(AU1XXX_PHY0_IRQ)
- if (AU1XXX_PHY0_BUSID == aup->mac_id)
- aup->mii_bus->irq[AU1XXX_PHY0_ADDR] = AU1XXX_PHY0_IRQ;
-# endif
-# if defined(AU1XXX_PHY1_IRQ)
- if (AU1XXX_PHY1_BUSID == aup->mac_id)
- aup->mii_bus->irq[AU1XXX_PHY1_ADDR] = AU1XXX_PHY1_IRQ;
-# endif
-#endif
- mdiobus_register(aup->mii_bus);
-
- if (mii_probe(dev) != 0) {
- goto err_out;
+ /* next descriptor */
+ prxd = aup->rx_dma_ring[aup->rx_head];
+ buff_stat = prxd->buff_stat;
+ dev->last_rx = jiffies;
}
+ return 0;
+}
- pDBfree = NULL;
- /* setup the data buffer descriptors and attach a buffer to each one */
- pDB = aup->db;
- for (i = 0; i < (NUM_TX_BUFFS+NUM_RX_BUFFS); i++) {
- pDB->pnext = pDBfree;
- pDBfree = pDB;
- pDB->vaddr = (u32 *)((unsigned)aup->vaddr + MAX_BUF_SIZE*i);
- pDB->dma_addr = (dma_addr_t)virt_to_bus(pDB->vaddr);
- pDB++;
- }
- aup->pDBfree = pDBfree;
+static void update_tx_stats(struct net_device *dev, u32 status)
+{
+ struct au1000_private *aup = (struct au1000_private *) dev->priv;
+ struct net_device_stats *ps = &dev->stats;
- for (i = 0; i < NUM_RX_DMA; i++) {
- pDB = GetFreeDB(aup);
- if (!pDB) {
- goto err_out;
+ if (status & TX_FRAME_ABORTED) {
+ if (!aup->phy_dev || (DUPLEX_FULL == aup->phy_dev->duplex)) {
+ if (status & (TX_JAB_TIMEOUT | TX_UNDERRUN)) {
+ /* any other tx errors are only valid
+ * in half duplex mode */
+ ps->tx_errors++;
+ ps->tx_aborted_errors++;
+ }
}
- aup->rx_dma_ring[i]->buff_stat = (unsigned)pDB->dma_addr;
- aup->rx_db_inuse[i] = pDB;
- }
- for (i = 0; i < NUM_TX_DMA; i++) {
- pDB = GetFreeDB(aup);
- if (!pDB) {
- goto err_out;
+ else {
+ ps->tx_errors++;
+ ps->tx_aborted_errors++;
+ if (status & (TX_NO_CARRIER | TX_LOSS_CARRIER))
+ ps->tx_carrier_errors++;
}
- aup->tx_dma_ring[i]->buff_stat = (unsigned)pDB->dma_addr;
- aup->tx_dma_ring[i]->len = 0;
- aup->tx_db_inuse[i] = pDB;
}
+}
- dev->base_addr = base;
- dev->irq = irq;
- dev->open = au1000_open;
- dev->hard_start_xmit = au1000_tx;
- dev->stop = au1000_close;
- dev->set_multicast_list = &set_rx_mode;
- dev->do_ioctl = &au1000_ioctl;
- SET_ETHTOOL_OPS(dev, &au1000_ethtool_ops);
- dev->tx_timeout = au1000_tx_timeout;
- dev->watchdog_timeo = ETH_TX_TIMEOUT;
+/*
+ * Called from the interrupt service routine to acknowledge
+ * the TX DONE bits. This is a must if the irq is setup as
+ * edge triggered.
+ */
+static void au1000_tx_ack(struct net_device *dev)
+{
+ struct au1000_private *aup = (struct au1000_private *) dev->priv;
+ volatile tx_dma_t *ptxd;
- /*
- * The boot code uses the ethernet controller, so reset it to start
- * fresh. au1000_init() expects that the device is in reset state.
- */
- reset_mac(dev);
+ ptxd = aup->tx_dma_ring[aup->tx_tail];
- return dev;
+ while (ptxd->buff_stat & TX_T_DONE) {
+ update_tx_stats(dev, ptxd->status);
+ ptxd->buff_stat &= ~TX_T_DONE;
+ ptxd->len = 0;
+ au_sync();
-err_out:
- if (aup->mii_bus != NULL) {
- mdiobus_unregister(aup->mii_bus);
- mdiobus_free(aup->mii_bus);
+ aup->tx_tail = (aup->tx_tail + 1) & (NUM_TX_DMA - 1);
+ ptxd = aup->tx_dma_ring[aup->tx_tail];
+
+ if (aup->tx_full) {
+ aup->tx_full = 0;
+ netif_wake_queue(dev);
+ }
}
+}
- /* here we should have a valid dev plus aup-> register addresses
- * so we can reset the mac properly.*/
- reset_mac(dev);
+/*
+ * Au1000 interrupt service routine.
+ */
+static irqreturn_t au1000_interrupt(int irq, void *dev_id)
+{
+ struct net_device *dev = dev_id;
- for (i = 0; i < NUM_RX_DMA; i++) {
- if (aup->rx_db_inuse[i])
- ReleaseDB(aup, aup->rx_db_inuse[i]);
- }
- for (i = 0; i < NUM_TX_DMA; i++) {
- if (aup->tx_db_inuse[i])
- ReleaseDB(aup, aup->tx_db_inuse[i]);
- }
- dma_free_noncoherent(NULL, MAX_BUF_SIZE * (NUM_TX_BUFFS + NUM_RX_BUFFS),
- (void *)aup->vaddr, aup->dma_addr);
- unregister_netdev(dev);
- free_netdev(dev);
- release_mem_region( base, MAC_IOSIZE);
- release_mem_region(macen, 4);
- return NULL;
+ /* Handle RX interrupts first to minimize chance of overrun */
+
+ au1000_rx(dev);
+ au1000_tx_ack(dev);
+ return IRQ_RETVAL(1);
}
/*
@@ -865,84 +880,6 @@ static int au1000_init(struct net_device *dev)
return 0;
}
-static void
-au1000_adjust_link(struct net_device *dev)
-{
- struct au1000_private *aup = (struct au1000_private *) dev->priv;
- struct phy_device *phydev = aup->phy_dev;
- unsigned long flags;
-
- int status_change = 0;
-
- BUG_ON(!aup->phy_dev);
-
- spin_lock_irqsave(&aup->lock, flags);
-
- if (phydev->link && (aup->old_speed != phydev->speed)) {
- // speed changed
-
- switch(phydev->speed) {
- case SPEED_10:
- case SPEED_100:
- break;
- default:
- printk(KERN_WARNING
- "%s: Speed (%d) is not 10/100 ???\n",
- dev->name, phydev->speed);
- break;
- }
-
- aup->old_speed = phydev->speed;
-
- status_change = 1;
- }
-
- if (phydev->link && (aup->old_duplex != phydev->duplex)) {
- // duplex mode changed
-
- /* switching duplex mode requires to disable rx and tx! */
- hard_stop(dev);
-
- if (DUPLEX_FULL == phydev->duplex)
- aup->mac->control = ((aup->mac->control
- | MAC_FULL_DUPLEX)
- & ~MAC_DISABLE_RX_OWN);
- else
- aup->mac->control = ((aup->mac->control
- & ~MAC_FULL_DUPLEX)
- | MAC_DISABLE_RX_OWN);
- au_sync_delay(1);
-
- enable_rx_tx(dev);
- aup->old_duplex = phydev->duplex;
-
- status_change = 1;
- }
-
- if(phydev->link != aup->old_link) {
- // link state changed
-
- if (!phydev->link) {
- /* link went down */
- aup->old_speed = 0;
- aup->old_duplex = -1;
- }
-
- aup->old_link = phydev->link;
- status_change = 1;
- }
-
- spin_unlock_irqrestore(&aup->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 int au1000_open(struct net_device *dev)
{
@@ -1004,88 +941,6 @@ static int au1000_close(struct net_device *dev)
return 0;
}
-static void __exit au1000_cleanup_module(void)
-{
- int i, j;
- struct net_device *dev;
- struct au1000_private *aup;
-
- for (i = 0; i < num_ifs; i++) {
- dev = iflist[i].dev;
- if (dev) {
- aup = (struct au1000_private *) dev->priv;
- unregister_netdev(dev);
- mdiobus_unregister(aup->mii_bus);
- mdiobus_free(aup->mii_bus);
- for (j = 0; j < NUM_RX_DMA; j++)
- if (aup->rx_db_inuse[j])
- ReleaseDB(aup, aup->rx_db_inuse[j]);
- for (j = 0; j < NUM_TX_DMA; j++)
- if (aup->tx_db_inuse[j])
- ReleaseDB(aup, aup->tx_db_inuse[j]);
- dma_free_noncoherent(NULL, MAX_BUF_SIZE *
- (NUM_TX_BUFFS + NUM_RX_BUFFS),
- (void *)aup->vaddr, aup->dma_addr);
- release_mem_region(dev->base_addr, MAC_IOSIZE);
- release_mem_region(CPHYSADDR(iflist[i].macen_addr), 4);
- free_netdev(dev);
- }
- }
-}
-
-static void update_tx_stats(struct net_device *dev, u32 status)
-{
- struct au1000_private *aup = (struct au1000_private *) dev->priv;
- struct net_device_stats *ps = &dev->stats;
-
- if (status & TX_FRAME_ABORTED) {
- if (!aup->phy_dev || (DUPLEX_FULL == aup->phy_dev->duplex)) {
- if (status & (TX_JAB_TIMEOUT | TX_UNDERRUN)) {
- /* any other tx errors are only valid
- * in half duplex mode */
- ps->tx_errors++;
- ps->tx_aborted_errors++;
- }
- }
- else {
- ps->tx_errors++;
- ps->tx_aborted_errors++;
- if (status & (TX_NO_CARRIER | TX_LOSS_CARRIER))
- ps->tx_carrier_errors++;
- }
- }
-}
-
-
-/*
- * Called from the interrupt service routine to acknowledge
- * the TX DONE bits. This is a must if the irq is setup as
- * edge triggered.
- */
-static void au1000_tx_ack(struct net_device *dev)
-{
- struct au1000_private *aup = (struct au1000_private *) dev->priv;
- volatile tx_dma_t *ptxd;
-
- ptxd = aup->tx_dma_ring[aup->tx_tail];
-
- while (ptxd->buff_stat & TX_T_DONE) {
- update_tx_stats(dev, ptxd->status);
- ptxd->buff_stat &= ~TX_T_DONE;
- ptxd->len = 0;
- au_sync();
-
- aup->tx_tail = (aup->tx_tail + 1) & (NUM_TX_DMA - 1);
- ptxd = aup->tx_dma_ring[aup->tx_tail];
-
- if (aup->tx_full) {
- aup->tx_full = 0;
- netif_wake_queue(dev);
- }
- }
-}
-
-
/*
* Au1000 transmit routine.
*/
@@ -1143,124 +998,6 @@ static int au1000_tx(struct sk_buff *skb, struct net_device *dev)
return 0;
}
-static inline void update_rx_stats(struct net_device *dev, u32 status)
-{
- struct au1000_private *aup = (struct au1000_private *) dev->priv;
- struct net_device_stats *ps = &dev->stats;
-
- ps->rx_packets++;
- if (status & RX_MCAST_FRAME)
- ps->multicast++;
-
- if (status & RX_ERROR) {
- ps->rx_errors++;
- if (status & RX_MISSED_FRAME)
- ps->rx_missed_errors++;
- if (status & (RX_OVERLEN | RX_OVERLEN | RX_LEN_ERROR))
- ps->rx_length_errors++;
- if (status & RX_CRC_ERROR)
- ps->rx_crc_errors++;
- if (status & RX_COLL)
- ps->collisions++;
- }
- else
- ps->rx_bytes += status & RX_FRAME_LEN_MASK;
-
-}
-
-/*
- * Au1000 receive routine.
- */
-static int au1000_rx(struct net_device *dev)
-{
- struct au1000_private *aup = (struct au1000_private *) dev->priv;
- struct sk_buff *skb;
- volatile rx_dma_t *prxd;
- u32 buff_stat, status;
- db_dest_t *pDB;
- u32 frmlen;
-
- if (au1000_debug > 5)
- printk("%s: au1000_rx head %d\n", dev->name, aup->rx_head);
-
- prxd = aup->rx_dma_ring[aup->rx_head];
- buff_stat = prxd->buff_stat;
- while (buff_stat & RX_T_DONE) {
- status = prxd->status;
- pDB = aup->rx_db_inuse[aup->rx_head];
- update_rx_stats(dev, status);
- if (!(status & RX_ERROR)) {
-
- /* good frame */
- frmlen = (status & RX_FRAME_LEN_MASK);
- frmlen -= 4; /* Remove FCS */
- skb = dev_alloc_skb(frmlen + 2);
- if (skb == NULL) {
- printk(KERN_ERR
- "%s: Memory squeeze, dropping packet.\n",
- dev->name);
- dev->stats.rx_dropped++;
- continue;
- }
- skb_reserve(skb, 2); /* 16 byte IP header align */
- skb_copy_to_linear_data(skb,
- (unsigned char *)pDB->vaddr, frmlen);
- skb_put(skb, frmlen);
- skb->protocol = eth_type_trans(skb, dev);
- netif_rx(skb); /* pass the packet to upper layers */
- }
- else {
- if (au1000_debug > 4) {
- if (status & RX_MISSED_FRAME)
- printk("rx miss\n");
- if (status & RX_WDOG_TIMER)
- printk("rx wdog\n");
- if (status & RX_RUNT)
- printk("rx runt\n");
- if (status & RX_OVERLEN)
- printk("rx overlen\n");
- if (status & RX_COLL)
- printk("rx coll\n");
- if (status & RX_MII_ERROR)
- printk("rx mii error\n");
- if (status & RX_CRC_ERROR)
- printk("rx crc error\n");
- if (status & RX_LEN_ERROR)
- printk("rx len error\n");
- if (status & RX_U_CNTRL_FRAME)
- printk("rx u control frame\n");
- if (status & RX_MISSED_FRAME)
- printk("rx miss\n");
- }
- }
- prxd->buff_stat = (u32)(pDB->dma_addr | RX_DMA_ENABLE);
- aup->rx_head = (aup->rx_head + 1) & (NUM_RX_DMA - 1);
- au_sync();
-
- /* next descriptor */
- prxd = aup->rx_dma_ring[aup->rx_head];
- buff_stat = prxd->buff_stat;
- dev->last_rx = jiffies;
- }
- return 0;
-}
-
-
-/*
- * Au1000 interrupt service routine.
- */
-static irqreturn_t au1000_interrupt(int irq, void *dev_id)
-{
- struct net_device *dev = dev_id;
-
- /* Handle RX interrupts first to minimize chance of overrun */
-
- au1000_rx(dev);
- au1000_tx_ack(dev);
- return IRQ_RETVAL(1);
-}
-
-
/*
* The Tx ring has been full longer than the watchdog timeout
* value. The transmitter must be hung?
@@ -1317,5 +1054,257 @@ static int au1000_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
return phy_mii_ioctl(aup->phy_dev, if_mii(rq), cmd);
}
+
+static struct net_device * au1000_probe(int port_num)
+{
+ static unsigned version_printed = 0;
+ struct au1000_private *aup = NULL;
+ struct net_device *dev = NULL;
+ db_dest_t *pDB, *pDBfree;
+ char ethaddr[6];
+ int irq, i, err;
+ u32 base, macen;
+
+ if (port_num >= NUM_ETH_INTERFACES)
+ return NULL;
+
+ base = CPHYSADDR(iflist[port_num].base_addr );
+ macen = CPHYSADDR(iflist[port_num].macen_addr);
+ irq = iflist[port_num].irq;
+
+ if (!request_mem_region( base, MAC_IOSIZE, "Au1x00 ENET") ||
+ !request_mem_region(macen, 4, "Au1x00 ENET"))
+ return NULL;
+
+ if (version_printed++ == 0)
+ printk("%s version %s %s\n", DRV_NAME, DRV_VERSION, DRV_AUTHOR);
+
+ dev = alloc_etherdev(sizeof(struct au1000_private));
+ if (!dev) {
+ printk(KERN_ERR "%s: alloc_etherdev failed\n", DRV_NAME);
+ return NULL;
+ }
+
+ if ((err = register_netdev(dev)) != 0) {
+ printk(KERN_ERR "%s: Cannot register net device, error %d\n",
+ DRV_NAME, err);
+ free_netdev(dev);
+ return NULL;
+ }
+
+ printk("%s: Au1xx0 Ethernet found at 0x%x, irq %d\n",
+ dev->name, base, irq);
+
+ aup = dev->priv;
+
+ spin_lock_init(&aup->lock);
+
+ /* Allocate the data buffers */
+ /* Snooping works fine with eth on all au1xxx */
+ aup->vaddr = (u32)dma_alloc_noncoherent(NULL, MAX_BUF_SIZE *
+ (NUM_TX_BUFFS + NUM_RX_BUFFS),
+ &aup->dma_addr, 0);
+ if (!aup->vaddr) {
+ free_netdev(dev);
+ release_mem_region( base, MAC_IOSIZE);
+ release_mem_region(macen, 4);
+ return NULL;
+ }
+
+ /* aup->mac is the base address of the MAC's registers */
+ aup->mac = (volatile mac_reg_t *)iflist[port_num].base_addr;
+
+ /* Setup some variables for quick register address access */
+ aup->enable = (volatile u32 *)iflist[port_num].macen_addr;
+ aup->mac_id = port_num;
+ au_macs[port_num] = aup;
+
+ if (port_num == 0) {
+ if (prom_get_ethernet_addr(ethaddr) == 0)
+ memcpy(au1000_mac_addr, ethaddr, sizeof(au1000_mac_addr));
+ else {
+ printk(KERN_INFO "%s: No MAC address found\n",
+ dev->name);
+ /* Use the hard coded MAC addresses */
+ }
+
+ setup_hw_rings(aup, MAC0_RX_DMA_ADDR, MAC0_TX_DMA_ADDR);
+ } else if (port_num == 1)
+ setup_hw_rings(aup, MAC1_RX_DMA_ADDR, MAC1_TX_DMA_ADDR);
+
+ /*
+ * Assign to the Ethernet ports two consecutive MAC addresses
+ * to match those that are printed on their stickers
+ */
+ memcpy(dev->dev_addr, au1000_mac_addr, sizeof(au1000_mac_addr));
+ dev->dev_addr[5] += port_num;
+
+ *aup->enable = 0;
+ aup->mac_enabled = 0;
+
+ aup->mii_bus = mdiobus_alloc();
+ if (aup->mii_bus == NULL)
+ goto err_out;
+
+ aup->mii_bus->priv = dev;
+ aup->mii_bus->read = au1000_mdiobus_read;
+ aup->mii_bus->write = au1000_mdiobus_write;
+ aup->mii_bus->reset = au1000_mdiobus_reset;
+ aup->mii_bus->name = "au1000_eth_mii";
+ snprintf(aup->mii_bus->id, MII_BUS_ID_SIZE, "%x", aup->mac_id);
+ aup->mii_bus->irq = kmalloc(sizeof(int)*PHY_MAX_ADDR, GFP_KERNEL);
+ for(i = 0; i < PHY_MAX_ADDR; ++i)
+ aup->mii_bus->irq[i] = PHY_POLL;
+
+ /* if known, set corresponding PHY IRQs */
+#if defined(AU1XXX_PHY_STATIC_CONFIG)
+# if defined(AU1XXX_PHY0_IRQ)
+ if (AU1XXX_PHY0_BUSID == aup->mac_id)
+ aup->mii_bus->irq[AU1XXX_PHY0_ADDR] = AU1XXX_PHY0_IRQ;
+# endif
+# if defined(AU1XXX_PHY1_IRQ)
+ if (AU1XXX_PHY1_BUSID == aup->mac_id)
+ aup->mii_bus->irq[AU1XXX_PHY1_ADDR] = AU1XXX_PHY1_IRQ;
+# endif
+#endif
+ mdiobus_register(aup->mii_bus);
+
+ if (mii_probe(dev) != 0) {
+ goto err_out;
+ }
+
+ pDBfree = NULL;
+ /* setup the data buffer descriptors and attach a buffer to each one */
+ pDB = aup->db;
+ for (i = 0; i < (NUM_TX_BUFFS+NUM_RX_BUFFS); i++) {
+ pDB->pnext = pDBfree;
+ pDBfree = pDB;
+ pDB->vaddr = (u32 *)((unsigned)aup->vaddr + MAX_BUF_SIZE*i);
+ pDB->dma_addr = (dma_addr_t)virt_to_bus(pDB->vaddr);
+ pDB++;
+ }
+ aup->pDBfree = pDBfree;
+
+ for (i = 0; i < NUM_RX_DMA; i++) {
+ pDB = GetFreeDB(aup);
+ if (!pDB) {
+ goto err_out;
+ }
+ aup->rx_dma_ring[i]->buff_stat = (unsigned)pDB->dma_addr;
+ aup->rx_db_inuse[i] = pDB;
+ }
+ for (i = 0; i < NUM_TX_DMA; i++) {
+ pDB = GetFreeDB(aup);
+ if (!pDB) {
+ goto err_out;
+ }
+ aup->tx_dma_ring[i]->buff_stat = (unsigned)pDB->dma_addr;
+ aup->tx_dma_ring[i]->len = 0;
+ aup->tx_db_inuse[i] = pDB;
+ }
+
+ dev->base_addr = base;
+ dev->irq = irq;
+ dev->open = au1000_open;
+ dev->hard_start_xmit = au1000_tx;
+ dev->stop = au1000_close;
+ dev->set_multicast_list = &set_rx_mode;
+ dev->do_ioctl = &au1000_ioctl;
+ SET_ETHTOOL_OPS(dev, &au1000_ethtool_ops);
+ dev->tx_timeout = au1000_tx_timeout;
+ dev->watchdog_timeo = ETH_TX_TIMEOUT;
+
+ /*
+ * The boot code uses the ethernet controller, so reset it to start
+ * fresh. au1000_init() expects that the device is in reset state.
+ */
+ reset_mac(dev);
+
+ return dev;
+
+err_out:
+ if (aup->mii_bus != NULL) {
+ mdiobus_unregister(aup->mii_bus);
+ mdiobus_free(aup->mii_bus);
+ }
+
+ /* here we should have a valid dev plus aup-> register addresses
+ * so we can reset the mac properly.*/
+ reset_mac(dev);
+
+ for (i = 0; i < NUM_RX_DMA; i++) {
+ if (aup->rx_db_inuse[i])
+ ReleaseDB(aup, aup->rx_db_inuse[i]);
+ }
+ for (i = 0; i < NUM_TX_DMA; i++) {
+ if (aup->tx_db_inuse[i])
+ ReleaseDB(aup, aup->tx_db_inuse[i]);
+ }
+ dma_free_noncoherent(NULL, MAX_BUF_SIZE * (NUM_TX_BUFFS + NUM_RX_BUFFS),
+ (void *)aup->vaddr, aup->dma_addr);
+ unregister_netdev(dev);
+ free_netdev(dev);
+ release_mem_region( base, MAC_IOSIZE);
+ release_mem_region(macen, 4);
+ return NULL;
+}
+
+
+
+
+
+static void __exit au1000_cleanup_module(void)
+{
+ int i, j;
+ struct net_device *dev;
+ struct au1000_private *aup;
+
+ for (i = 0; i < num_ifs; i++) {
+ dev = iflist[i].dev;
+ if (dev) {
+ aup = (struct au1000_private *) dev->priv;
+ unregister_netdev(dev);
+ mdiobus_unregister(aup->mii_bus);
+ mdiobus_free(aup->mii_bus);
+ for (j = 0; j < NUM_RX_DMA; j++)
+ if (aup->rx_db_inuse[j])
+ ReleaseDB(aup, aup->rx_db_inuse[j]);
+ for (j = 0; j < NUM_TX_DMA; j++)
+ if (aup->tx_db_inuse[j])
+ ReleaseDB(aup, aup->tx_db_inuse[j]);
+ dma_free_noncoherent(NULL, MAX_BUF_SIZE *
+ (NUM_TX_BUFFS + NUM_RX_BUFFS),
+ (void *)aup->vaddr, aup->dma_addr);
+ release_mem_region(dev->base_addr, MAC_IOSIZE);
+ release_mem_region(CPHYSADDR(iflist[i].macen_addr), 4);
+ free_netdev(dev);
+ }
+ }
+}
+
+/*
+ * Setup the base address and interrupt of the Au1xxx ethernet macs
+ * based on cpu type and whether the interface is enabled in sys_pinfunc
+ * register. The last interface is enabled if SYS_PF_NI2 (bit 4) is 0.
+ */
+static int __init au1000_init_module(void)
+{
+ int ni = (int)((au_readl(SYS_PINFUNC) & (u32)(SYS_PF_NI2)) >> 4);
+ struct net_device *dev;
+ int i, found_one = 0;
+
+ num_ifs = NUM_ETH_INTERFACES - ni;
+
+ for(i = 0; i < num_ifs; i++) {
+ dev = au1000_probe(i);
+ iflist[i].dev = dev;
+ if (dev)
+ found_one++;
+ }
+ if (!found_one)
+ return -ENODEV;
+ return 0;
+}
+
module_init(au1000_init_module);
module_exit(au1000_cleanup_module);
--
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