#define KORINA_NUM_RDS 64 /* number of receive descriptors */
#define KORINA_NUM_TDS 64 /* number of transmit descriptors */
-#define KORINA_RBSIZE 536 /* size of one resource buffer = Ether MTU */
+/* KORINA_RBSIZE is the hardware's default maximum receive
+ * frame size in bytes. Having this hardcoded means that there
+ * is no support for MTU sizes greater than 1500. */
+#define KORINA_RBSIZE 1536 /* size of one resource buffer = Ether MTU */
#define KORINA_RDS_MASK (KORINA_NUM_RDS - 1)
#define KORINA_TDS_MASK (KORINA_NUM_TDS - 1)
#define RD_RING_SIZE (KORINA_NUM_RDS * sizeof(struct dma_desc))
int dma_halt_cnt;
int dma_run_cnt;
struct napi_struct napi;
+ struct timer_list media_check_timer;
struct mii_if_info mii_if;
struct net_device *dev;
int phy_addr;
struct korina_private *lp = netdev_priv(dev);
unsigned long flags;
u32 length;
- u32 chain_index;
+ u32 chain_prev, chain_next;
struct dma_desc *td;
spin_lock_irqsave(&lp->lock, flags);
/* Setup the transmit descriptor. */
dma_cache_inv((u32) td, sizeof(*td));
td->ca = CPHYSADDR(skb->data);
- chain_index = (lp->tx_chain_tail - 1) &
- KORINA_TDS_MASK;
+ chain_prev = (lp->tx_chain_tail - 1) & KORINA_TDS_MASK;
+ chain_next = (lp->tx_chain_tail + 1) & KORINA_TDS_MASK;
if (readl(&(lp->tx_dma_regs->dmandptr)) == 0) {
if (lp->tx_chain_status == desc_empty) {
td->control = DMA_COUNT(length) |
DMA_DESC_COF | DMA_DESC_IOF;
/* Move tail */
- lp->tx_chain_tail = chain_index;
+ lp->tx_chain_tail = chain_next;
/* Write to NDPTR */
writel(CPHYSADDR(&lp->td_ring[lp->tx_chain_head]),
&lp->tx_dma_regs->dmandptr);
td->control = DMA_COUNT(length) |
DMA_DESC_COF | DMA_DESC_IOF;
/* Link to prev */
- lp->td_ring[chain_index].control &=
+ lp->td_ring[chain_prev].control &=
~DMA_DESC_COF;
/* Link to prev */
- lp->td_ring[chain_index].link = CPHYSADDR(td);
+ lp->td_ring[chain_prev].link = CPHYSADDR(td);
/* Move tail */
- lp->tx_chain_tail = chain_index;
+ lp->tx_chain_tail = chain_next;
/* Write to NDPTR */
writel(CPHYSADDR(&lp->td_ring[lp->tx_chain_head]),
&(lp->tx_dma_regs->dmandptr));
td->control = DMA_COUNT(length) |
DMA_DESC_COF | DMA_DESC_IOF;
/* Move tail */
- lp->tx_chain_tail = chain_index;
+ lp->tx_chain_tail = chain_next;
lp->tx_chain_status = desc_filled;
- netif_stop_queue(dev);
} else {
/* Update tail */
td->control = DMA_COUNT(length) |
DMA_DESC_COF | DMA_DESC_IOF;
- lp->td_ring[chain_index].control &=
+ lp->td_ring[chain_prev].control &=
~DMA_DESC_COF;
- lp->td_ring[chain_index].link = CPHYSADDR(td);
- lp->tx_chain_tail = chain_index;
+ lp->td_ring[chain_prev].link = CPHYSADDR(td);
+ lp->tx_chain_tail = chain_next;
}
}
dma_cache_wback((u32) td, sizeof(*td));
dmas = readl(&lp->rx_dma_regs->dmas);
if (dmas & (DMA_STAT_DONE | DMA_STAT_HALT | DMA_STAT_ERR)) {
- netif_rx_schedule_prep(&lp->napi);
-
dmasm = readl(&lp->rx_dma_regs->dmasm);
writel(dmasm | (DMA_STAT_DONE |
DMA_STAT_HALT | DMA_STAT_ERR),
&lp->rx_dma_regs->dmasm);
+ napi_schedule(&lp->napi);
+
if (dmas & DMA_STAT_ERR)
- printk(KERN_ERR DRV_NAME "%s: DMA error\n", dev->name);
+ printk(KERN_ERR "%s: DMA error\n", dev->name);
retval = IRQ_HANDLED;
} else
struct dma_desc *rd = &lp->rd_ring[lp->rx_next_done];
struct sk_buff *skb, *skb_new;
u8 *pkt_buf;
- u32 devcs, pkt_len, dmas, rx_free_desc;
+ u32 devcs, pkt_len, dmas;
int count;
dma_cache_inv((u32)rd, sizeof(*rd));
for (count = 0; count < limit; count++) {
+ skb = lp->rx_skb[lp->rx_next_done];
+ skb_new = NULL;
devcs = rd->devcs;
+ if ((KORINA_RBSIZE - (u32)DMA_COUNT(rd->control)) == 0)
+ break;
+
/* Update statistics counters */
if (devcs & ETH_RX_CRC)
dev->stats.rx_crc_errors++;
* in Rc32434 (errata ref #077) */
dev->stats.rx_errors++;
dev->stats.rx_dropped++;
- }
-
- while ((rx_free_desc = KORINA_RBSIZE - (u32)DMA_COUNT(rd->control)) != 0) {
- /* init the var. used for the later
- * operations within the while loop */
- skb_new = NULL;
+ } else if ((devcs & ETH_RX_ROK)) {
pkt_len = RCVPKT_LENGTH(devcs);
- skb = lp->rx_skb[lp->rx_next_done];
-
- if ((devcs & ETH_RX_ROK)) {
- /* must be the (first and) last
- * descriptor then */
- pkt_buf = (u8 *)lp->rx_skb[lp->rx_next_done]->data;
-
- /* invalidate the cache */
- dma_cache_inv((unsigned long)pkt_buf, pkt_len - 4);
-
- /* Malloc up new buffer. */
- skb_new = netdev_alloc_skb(dev, KORINA_RBSIZE + 2);
-
- if (!skb_new)
- break;
- /* Do not count the CRC */
- skb_put(skb, pkt_len - 4);
- skb->protocol = eth_type_trans(skb, dev);
-
- /* Pass the packet to upper layers */
- netif_receive_skb(skb);
- dev->stats.rx_packets++;
- dev->stats.rx_bytes += pkt_len;
-
- /* Update the mcast stats */
- if (devcs & ETH_RX_MP)
- dev->stats.multicast++;
-
- lp->rx_skb[lp->rx_next_done] = skb_new;
- }
-
- rd->devcs = 0;
-
- /* Restore descriptor's curr_addr */
- if (skb_new)
- rd->ca = CPHYSADDR(skb_new->data);
- else
- rd->ca = CPHYSADDR(skb->data);
-
- rd->control = DMA_COUNT(KORINA_RBSIZE) |
- DMA_DESC_COD | DMA_DESC_IOD;
- lp->rd_ring[(lp->rx_next_done - 1) &
- KORINA_RDS_MASK].control &=
- ~DMA_DESC_COD;
-
- lp->rx_next_done = (lp->rx_next_done + 1) & KORINA_RDS_MASK;
- dma_cache_wback((u32)rd, sizeof(*rd));
- rd = &lp->rd_ring[lp->rx_next_done];
- writel(~DMA_STAT_DONE, &lp->rx_dma_regs->dmas);
+
+ /* must be the (first and) last
+ * descriptor then */
+ pkt_buf = (u8 *)lp->rx_skb[lp->rx_next_done]->data;
+
+ /* invalidate the cache */
+ dma_cache_inv((unsigned long)pkt_buf, pkt_len - 4);
+
+ /* Malloc up new buffer. */
+ skb_new = netdev_alloc_skb_ip_align(dev, KORINA_RBSIZE);
+
+ if (!skb_new)
+ break;
+ /* Do not count the CRC */
+ skb_put(skb, pkt_len - 4);
+ skb->protocol = eth_type_trans(skb, dev);
+
+ /* Pass the packet to upper layers */
+ netif_receive_skb(skb);
+ dev->stats.rx_packets++;
+ dev->stats.rx_bytes += pkt_len;
+
+ /* Update the mcast stats */
+ if (devcs & ETH_RX_MP)
+ dev->stats.multicast++;
+
+ lp->rx_skb[lp->rx_next_done] = skb_new;
}
+
+ rd->devcs = 0;
+
+ /* Restore descriptor's curr_addr */
+ if (skb_new)
+ rd->ca = CPHYSADDR(skb_new->data);
+ else
+ rd->ca = CPHYSADDR(skb->data);
+
+ rd->control = DMA_COUNT(KORINA_RBSIZE) |
+ DMA_DESC_COD | DMA_DESC_IOD;
+ lp->rd_ring[(lp->rx_next_done - 1) &
+ KORINA_RDS_MASK].control &=
+ ~DMA_DESC_COD;
+
+ lp->rx_next_done = (lp->rx_next_done + 1) & KORINA_RDS_MASK;
+ dma_cache_wback((u32)rd, sizeof(*rd));
+ rd = &lp->rd_ring[lp->rx_next_done];
+ writel(~DMA_STAT_DONE, &lp->rx_dma_regs->dmas);
}
dmas = readl(&lp->rx_dma_regs->dmas);
work_done = korina_rx(dev, budget);
if (work_done < budget) {
- netif_rx_complete(napi);
+ napi_complete(napi);
writel(readl(&lp->rx_dma_regs->dmasm) &
~(DMA_STAT_DONE | DMA_STAT_HALT | DMA_STAT_ERR),
{
struct korina_private *lp = netdev_priv(dev);
unsigned long flags;
- struct dev_mc_list *dmi = dev->mc_list;
+ struct dev_mc_list *dmi;
u32 recognise = ETH_ARC_AB; /* always accept broadcasts */
int i;
if (dev->flags & IFF_PROMISC)
recognise |= ETH_ARC_PRO;
- else if ((dev->flags & IFF_ALLMULTI) || (dev->mc_count > 4))
+ else if ((dev->flags & IFF_ALLMULTI) || (netdev_mc_count(dev) > 4))
/* All multicast and broadcast */
recognise |= ETH_ARC_AM;
/* Build the hash table */
- if (dev->mc_count > 4) {
+ if (netdev_mc_count(dev) > 4) {
u16 hash_table[4];
u32 crc;
for (i = 0; i < 4; i++)
hash_table[i] = 0;
- for (i = 0; i < dev->mc_count; i++) {
+ netdev_for_each_mc_addr(dmi, dev) {
char *addrs = dmi->dmi_addr;
- dmi = dmi->next;
-
if (!(*addrs & 1))
continue;
dev->stats.tx_dropped++;
/* Should never happen */
- printk(KERN_ERR DRV_NAME "%s: split tx ignored\n",
+ printk(KERN_ERR "%s: split tx ignored\n",
dev->name);
} else if (devcs & ETH_TX_TOK) {
dev->stats.tx_packets++;
dmas = readl(&lp->tx_dma_regs->dmas);
if (dmas & (DMA_STAT_FINI | DMA_STAT_ERR)) {
- korina_tx(dev);
-
dmasm = readl(&lp->tx_dma_regs->dmasm);
writel(dmasm | (DMA_STAT_FINI | DMA_STAT_ERR),
&lp->tx_dma_regs->dmasm);
+ korina_tx(dev);
+
if (lp->tx_chain_status == desc_filled &&
(readl(&(lp->tx_dma_regs->dmandptr)) == 0)) {
writel(CPHYSADDR(&lp->td_ring[lp->tx_chain_head]),
dev->trans_start = jiffies;
}
if (dmas & DMA_STAT_ERR)
- printk(KERN_ERR DRV_NAME "%s: DMA error\n", dev->name);
+ printk(KERN_ERR "%s: DMA error\n", dev->name);
retval = IRQ_HANDLED;
} else
&lp->eth_regs->ethmac2);
}
+static void korina_poll_media(unsigned long data)
+{
+ struct net_device *dev = (struct net_device *) data;
+ struct korina_private *lp = netdev_priv(dev);
+
+ korina_check_media(dev, 0);
+ mod_timer(&lp->media_check_timer, jiffies + HZ);
+}
+
static void korina_set_carrier(struct mii_if_info *mii)
{
if (mii->force_media) {
return mii_link_ok(&lp->mii_if);
}
-static struct ethtool_ops netdev_ethtool_ops = {
+static const struct ethtool_ops netdev_ethtool_ops = {
.get_drvinfo = netdev_get_drvinfo,
.get_settings = netdev_get_settings,
.set_settings = netdev_set_settings,
.get_link = netdev_get_link,
};
-static void korina_alloc_ring(struct net_device *dev)
+static int korina_alloc_ring(struct net_device *dev)
{
struct korina_private *lp = netdev_priv(dev);
+ struct sk_buff *skb;
int i;
/* Initialize the transmit descriptors */
/* Initialize the receive descriptors */
for (i = 0; i < KORINA_NUM_RDS; i++) {
- struct sk_buff *skb = lp->rx_skb[i];
-
skb = dev_alloc_skb(KORINA_RBSIZE + 2);
if (!skb)
- break;
+ return -ENOMEM;
skb_reserve(skb, 2);
lp->rx_skb[i] = skb;
lp->rd_ring[i].control = DMA_DESC_IOD |
lp->rd_ring[i].link = CPHYSADDR(&lp->rd_ring[i+1]);
}
- /* loop back */
- lp->rd_ring[i].link = CPHYSADDR(&lp->rd_ring[0]);
- lp->rx_next_done = 0;
+ /* loop back receive descriptors, so the last
+ * descriptor points to the first one */
+ lp->rd_ring[i - 1].link = CPHYSADDR(&lp->rd_ring[0]);
+ lp->rd_ring[i - 1].control |= DMA_DESC_COD;
- lp->rd_ring[i].control |= DMA_DESC_COD;
+ lp->rx_next_done = 0;
lp->rx_chain_head = 0;
lp->rx_chain_tail = 0;
lp->rx_chain_status = desc_empty;
+
+ return 0;
}
static void korina_free_ring(struct net_device *dev)
writel(ETH_INT_FC_EN, &lp->eth_regs->ethintfc);
/* Allocate rings */
- korina_alloc_ring(dev);
+ if (korina_alloc_ring(dev)) {
+ printk(KERN_ERR "%s: descriptor allocation failed\n", dev->name);
+ korina_free_ring(dev);
+ return -ENOMEM;
+ }
writel(0, &lp->rx_dma_regs->dmas);
/* Start Rx DMA */
korina_free_ring(dev);
+ napi_disable(&lp->napi);
+
ret = korina_init(dev);
if (ret < 0) {
- printk(KERN_ERR DRV_NAME "%s: cannot restart device\n",
- dev->name);
+ printk(KERN_ERR "%s: cannot restart device\n", dev->name);
return ret;
}
korina_multicast_list(dev);
/* Initialize */
ret = korina_init(dev);
if (ret < 0) {
- printk(KERN_ERR DRV_NAME "%s: cannot open device\n", dev->name);
+ printk(KERN_ERR "%s: cannot open device\n", dev->name);
goto out;
}
/* Install the interrupt handler
* that handles the Done Finished
* Ovr and Und Events */
- ret = request_irq(lp->rx_irq, &korina_rx_dma_interrupt,
- IRQF_SHARED | IRQF_DISABLED, "Korina ethernet Rx", dev);
+ ret = request_irq(lp->rx_irq, korina_rx_dma_interrupt,
+ IRQF_DISABLED, "Korina ethernet Rx", dev);
if (ret < 0) {
- printk(KERN_ERR DRV_NAME "%s: unable to get Rx DMA IRQ %d\n",
+ printk(KERN_ERR "%s: unable to get Rx DMA IRQ %d\n",
dev->name, lp->rx_irq);
goto err_release;
}
- ret = request_irq(lp->tx_irq, &korina_tx_dma_interrupt,
- IRQF_SHARED | IRQF_DISABLED, "Korina ethernet Tx", dev);
+ ret = request_irq(lp->tx_irq, korina_tx_dma_interrupt,
+ IRQF_DISABLED, "Korina ethernet Tx", dev);
if (ret < 0) {
- printk(KERN_ERR DRV_NAME "%s: unable to get Tx DMA IRQ %d\n",
+ printk(KERN_ERR "%s: unable to get Tx DMA IRQ %d\n",
dev->name, lp->tx_irq);
goto err_free_rx_irq;
}
/* Install handler for overrun error. */
- ret = request_irq(lp->ovr_irq, &korina_ovr_interrupt,
- IRQF_SHARED | IRQF_DISABLED, "Ethernet Overflow", dev);
+ ret = request_irq(lp->ovr_irq, korina_ovr_interrupt,
+ IRQF_DISABLED, "Ethernet Overflow", dev);
if (ret < 0) {
- printk(KERN_ERR DRV_NAME"%s: unable to get OVR IRQ %d\n",
+ printk(KERN_ERR "%s: unable to get OVR IRQ %d\n",
dev->name, lp->ovr_irq);
goto err_free_tx_irq;
}
/* Install handler for underflow error. */
- ret = request_irq(lp->und_irq, &korina_und_interrupt,
- IRQF_SHARED | IRQF_DISABLED, "Ethernet Underflow", dev);
+ ret = request_irq(lp->und_irq, korina_und_interrupt,
+ IRQF_DISABLED, "Ethernet Underflow", dev);
if (ret < 0) {
- printk(KERN_ERR DRV_NAME "%s: unable to get UND IRQ %d\n",
+ printk(KERN_ERR "%s: unable to get UND IRQ %d\n",
dev->name, lp->und_irq);
goto err_free_ovr_irq;
}
+ mod_timer(&lp->media_check_timer, jiffies + 1);
out:
return ret;
struct korina_private *lp = netdev_priv(dev);
u32 tmp;
+ del_timer(&lp->media_check_timer);
+
/* Disable interrupts */
disable_irq(lp->rx_irq);
disable_irq(lp->tx_irq);
korina_free_ring(dev);
+ napi_disable(&lp->napi);
+
free_irq(lp->rx_irq, dev);
free_irq(lp->tx_irq, dev);
free_irq(lp->ovr_irq, dev);
return 0;
}
+static const struct net_device_ops korina_netdev_ops = {
+ .ndo_open = korina_open,
+ .ndo_stop = korina_close,
+ .ndo_start_xmit = korina_send_packet,
+ .ndo_set_multicast_list = korina_multicast_list,
+ .ndo_tx_timeout = korina_tx_timeout,
+ .ndo_do_ioctl = korina_ioctl,
+ .ndo_change_mtu = eth_change_mtu,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_set_mac_address = eth_mac_addr,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = korina_poll_controller,
+#endif
+};
+
static int korina_probe(struct platform_device *pdev)
{
struct korina_device *bif = platform_get_drvdata(pdev);
dev->base_addr = r->start;
lp->eth_regs = ioremap_nocache(r->start, r->end - r->start);
if (!lp->eth_regs) {
- printk(KERN_ERR DRV_NAME "cannot remap registers\n");
+ printk(KERN_ERR DRV_NAME ": cannot remap registers\n");
rc = -ENXIO;
goto probe_err_out;
}
r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "korina_dma_rx");
lp->rx_dma_regs = ioremap_nocache(r->start, r->end - r->start);
if (!lp->rx_dma_regs) {
- printk(KERN_ERR DRV_NAME "cannot remap Rx DMA registers\n");
+ printk(KERN_ERR DRV_NAME ": cannot remap Rx DMA registers\n");
rc = -ENXIO;
goto probe_err_dma_rx;
}
r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "korina_dma_tx");
lp->tx_dma_regs = ioremap_nocache(r->start, r->end - r->start);
if (!lp->tx_dma_regs) {
- printk(KERN_ERR DRV_NAME "cannot remap Tx DMA registers\n");
+ printk(KERN_ERR DRV_NAME ": cannot remap Tx DMA registers\n");
rc = -ENXIO;
goto probe_err_dma_tx;
}
lp->td_ring = kmalloc(TD_RING_SIZE + RD_RING_SIZE, GFP_KERNEL);
if (!lp->td_ring) {
- printk(KERN_ERR DRV_NAME "cannot allocate descriptors\n");
+ printk(KERN_ERR DRV_NAME ": cannot allocate descriptors\n");
rc = -ENXIO;
goto probe_err_td_ring;
}
dev->irq = lp->rx_irq;
lp->dev = dev;
- dev->open = korina_open;
- dev->stop = korina_close;
- dev->hard_start_xmit = korina_send_packet;
- dev->set_multicast_list = &korina_multicast_list;
+ dev->netdev_ops = &korina_netdev_ops;
dev->ethtool_ops = &netdev_ethtool_ops;
- dev->tx_timeout = korina_tx_timeout;
dev->watchdog_timeo = TX_TIMEOUT;
- dev->do_ioctl = &korina_ioctl;
-#ifdef CONFIG_NET_POLL_CONTROLLER
- dev->poll_controller = korina_poll_controller;
-#endif
netif_napi_add(dev, &lp->napi, korina_poll, 64);
lp->phy_addr = (((lp->rx_irq == 0x2c? 1:0) << 8) | 0x05);
rc = register_netdev(dev);
if (rc < 0) {
printk(KERN_ERR DRV_NAME
- ": cannot register net device %d\n", rc);
+ ": cannot register net device: %d\n", rc);
goto probe_err_register;
}
+ setup_timer(&lp->media_check_timer, korina_poll_media, (unsigned long) dev);
+
+ printk(KERN_INFO "%s: " DRV_NAME "-" DRV_VERSION " " DRV_RELDATE "\n",
+ dev->name);
out:
return rc;
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff