#include <linux/errno.h>
#include <linux/types.h>
#include <linux/delay.h>
-#include <linux/version.h>
#include <linux/netdevice.h>
+#include <linux/if_vlan.h>
#include <linux/etherdevice.h>
#include <linux/ethtool.h>
#include <linux/skbuff.h>
#include <linux/mii.h>
#include <linux/phy.h>
+#include <linux/phy_fixed.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
+#include <linux/clk.h>
#include <asm/gpio.h>
+#include <asm/atomic.h>
MODULE_AUTHOR("Eugene Konev <ejka@imfi.kspu.ru>");
MODULE_DESCRIPTION("TI AR7 ethernet driver (CPMAC)");
MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:cpmac");
static int debug_level = 8;
static int dumb_switch;
MODULE_PARM_DESC(debug_level, "Number of NETIF_MSG bits to enable");
MODULE_PARM_DESC(dumb_switch, "Assume switch is not connected to MDIO bus");
-#define CPMAC_VERSION "0.5.0"
-/* stolen from net/ieee80211.h */
-#ifndef MAC_FMT
-#define MAC_FMT "%02x:%02x:%02x:%02x:%02x:%02x"
-#define MAC_ARG(x) ((u8*)(x))[0], ((u8*)(x))[1], ((u8*)(x))[2], \
- ((u8*)(x))[3], ((u8*)(x))[4], ((u8*)(x))[5]
-#endif
-/* frame size + 802.1q tag */
-#define CPMAC_SKB_SIZE (ETH_FRAME_LEN + 4)
+#define CPMAC_VERSION "0.5.2"
+/* frame size + 802.1q tag + FCS size */
+#define CPMAC_SKB_SIZE (ETH_FRAME_LEN + ETH_FCS_LEN + VLAN_HLEN)
#define CPMAC_QUEUES 8
/* Ethernet registers */
#define CPMAC_EOQ 0x1000
struct sk_buff *skb;
struct cpmac_desc *next;
+ struct cpmac_desc *prev;
dma_addr_t mapping;
dma_addr_t data_mapping;
};
void __iomem *regs;
struct mii_bus *mii_bus;
struct phy_device *phy;
- char phy_name[BUS_ID_SIZE];
+ char phy_name[MII_BUS_ID_SIZE + 3];
int oldlink, oldspeed, oldduplex;
u32 msg_enable;
struct net_device *dev;
struct work_struct reset_work;
struct platform_device *pdev;
+ struct napi_struct napi;
+ atomic_t reset_pending;
};
static irqreturn_t cpmac_irq(int, void *);
printk("\n");
}
+static void cpmac_dump_all_desc(struct net_device *dev)
+{
+ struct cpmac_priv *priv = netdev_priv(dev);
+ struct cpmac_desc *dump = priv->rx_head;
+ do {
+ cpmac_dump_desc(dev, dump);
+ dump = dump->next;
+ } while (dump != priv->rx_head);
+}
+
static void cpmac_dump_skb(struct net_device *dev, struct sk_buff *skb)
{
int i;
static int cpmac_mdio_reset(struct mii_bus *bus)
{
+ struct clk *cpmac_clk;
+
+ cpmac_clk = clk_get(&bus->dev, "cpmac");
+ if (IS_ERR(cpmac_clk)) {
+ printk(KERN_ERR "unable to get cpmac clock\n");
+ return -1;
+ }
ar7_device_reset(AR7_RESET_BIT_MDIO);
cpmac_write(bus->priv, CPMAC_MDIO_CONTROL, MDIOC_ENABLE |
- MDIOC_CLKDIV(ar7_cpmac_freq() / 2200000 - 1));
+ MDIOC_CLKDIV(clk_get_rate(cpmac_clk) / 2200000 - 1));
return 0;
}
static int mii_irqs[PHY_MAX_ADDR] = { PHY_POLL, };
-static struct mii_bus cpmac_mii = {
- .name = "cpmac-mii",
- .read = cpmac_mdio_read,
- .write = cpmac_mdio_write,
- .reset = cpmac_mdio_reset,
- .irq = mii_irqs,
-};
+static struct mii_bus *cpmac_mii;
static int cpmac_config(struct net_device *dev, struct ifmap *map)
{
static void cpmac_set_multicast_list(struct net_device *dev)
{
- struct dev_mc_list *iter;
- int i;
+ struct netdev_hw_addr *ha;
u8 tmp;
u32 mbp, bit, hash[2] = { 0, };
struct cpmac_priv *priv = netdev_priv(dev);
* cpmac uses some strange mac address hashing
* (not crc32)
*/
- for (i = 0, iter = dev->mc_list; i < dev->mc_count;
- i++, iter = iter->next) {
+ netdev_for_each_mc_addr(ha, dev) {
bit = 0;
- tmp = iter->dmi_addr[0];
+ tmp = ha->addr[0];
bit ^= (tmp >> 2) ^ (tmp << 4);
- tmp = iter->dmi_addr[1];
+ tmp = ha->addr[1];
bit ^= (tmp >> 4) ^ (tmp << 2);
- tmp = iter->dmi_addr[2];
+ tmp = ha->addr[2];
bit ^= (tmp >> 6) ^ tmp;
- tmp = iter->dmi_addr[3];
+ tmp = ha->addr[3];
bit ^= (tmp >> 2) ^ (tmp << 4);
- tmp = iter->dmi_addr[4];
+ tmp = ha->addr[4];
bit ^= (tmp >> 4) ^ (tmp << 2);
- tmp = iter->dmi_addr[5];
+ tmp = ha->addr[5];
bit ^= (tmp >> 6) ^ tmp;
bit &= 0x3f;
hash[bit / 32] |= 1 << (bit % 32);
}
}
-static struct sk_buff *cpmac_rx_one(struct net_device *dev,
- struct cpmac_priv *priv,
+static struct sk_buff *cpmac_rx_one(struct cpmac_priv *priv,
struct cpmac_desc *desc)
{
struct sk_buff *skb, *result = NULL;
if (unlikely(netif_msg_hw(priv)))
- cpmac_dump_desc(dev, desc);
+ cpmac_dump_desc(priv->dev, desc);
cpmac_write(priv->regs, CPMAC_RX_ACK(0), (u32)desc->mapping);
if (unlikely(!desc->datalen)) {
if (netif_msg_rx_err(priv) && net_ratelimit())
printk(KERN_WARNING "%s: rx: spurious interrupt\n",
- dev->name);
+ priv->dev->name);
return NULL;
}
- skb = netdev_alloc_skb(dev, CPMAC_SKB_SIZE);
+ skb = netdev_alloc_skb_ip_align(priv->dev, CPMAC_SKB_SIZE);
if (likely(skb)) {
- skb_reserve(skb, 2);
skb_put(desc->skb, desc->datalen);
- desc->skb->protocol = eth_type_trans(desc->skb, dev);
+ desc->skb->protocol = eth_type_trans(desc->skb, priv->dev);
desc->skb->ip_summed = CHECKSUM_NONE;
- dev->stats.rx_packets++;
- dev->stats.rx_bytes += desc->datalen;
+ priv->dev->stats.rx_packets++;
+ priv->dev->stats.rx_bytes += desc->datalen;
result = desc->skb;
- dma_unmap_single(&dev->dev, desc->data_mapping, CPMAC_SKB_SIZE,
- DMA_FROM_DEVICE);
+ dma_unmap_single(&priv->dev->dev, desc->data_mapping,
+ CPMAC_SKB_SIZE, DMA_FROM_DEVICE);
desc->skb = skb;
- desc->data_mapping = dma_map_single(&dev->dev, skb->data,
+ desc->data_mapping = dma_map_single(&priv->dev->dev, skb->data,
CPMAC_SKB_SIZE,
DMA_FROM_DEVICE);
desc->hw_data = (u32)desc->data_mapping;
if (unlikely(netif_msg_pktdata(priv))) {
- printk(KERN_DEBUG "%s: received packet:\n", dev->name);
- cpmac_dump_skb(dev, result);
+ printk(KERN_DEBUG "%s: received packet:\n",
+ priv->dev->name);
+ cpmac_dump_skb(priv->dev, result);
}
} else {
if (netif_msg_rx_err(priv) && net_ratelimit())
printk(KERN_WARNING
- "%s: low on skbs, dropping packet\n", dev->name);
- dev->stats.rx_dropped++;
+ "%s: low on skbs, dropping packet\n",
+ priv->dev->name);
+ priv->dev->stats.rx_dropped++;
}
desc->buflen = CPMAC_SKB_SIZE;
return result;
}
-static int cpmac_poll(struct net_device *dev, int *budget)
+static int cpmac_poll(struct napi_struct *napi, int budget)
{
struct sk_buff *skb;
- struct cpmac_desc *desc;
- int received = 0, quota = min(dev->quota, *budget);
- struct cpmac_priv *priv = netdev_priv(dev);
+ struct cpmac_desc *desc, *restart;
+ struct cpmac_priv *priv = container_of(napi, struct cpmac_priv, napi);
+ int received = 0, processed = 0;
spin_lock(&priv->rx_lock);
if (unlikely(!priv->rx_head)) {
if (netif_msg_rx_err(priv) && net_ratelimit())
printk(KERN_WARNING "%s: rx: polling, but no queue\n",
- dev->name);
- netif_rx_complete(dev);
+ priv->dev->name);
+ spin_unlock(&priv->rx_lock);
+ napi_complete(napi);
return 0;
}
desc = priv->rx_head;
- while ((received < quota) && ((desc->dataflags & CPMAC_OWN) == 0)) {
- skb = cpmac_rx_one(dev, priv, desc);
+ restart = NULL;
+ while (((desc->dataflags & CPMAC_OWN) == 0) && (received < budget)) {
+ processed++;
+
+ if ((desc->dataflags & CPMAC_EOQ) != 0) {
+ /* The last update to eoq->hw_next didn't happen
+ * soon enough, and the receiver stopped here.
+ *Remember this descriptor so we can restart
+ * the receiver after freeing some space.
+ */
+ if (unlikely(restart)) {
+ if (netif_msg_rx_err(priv))
+ printk(KERN_ERR "%s: poll found a"
+ " duplicate EOQ: %p and %p\n",
+ priv->dev->name, restart, desc);
+ goto fatal_error;
+ }
+
+ restart = desc->next;
+ }
+
+ skb = cpmac_rx_one(priv, desc);
if (likely(skb)) {
netif_receive_skb(skb);
received++;
desc = desc->next;
}
+ if (desc != priv->rx_head) {
+ /* We freed some buffers, but not the whole ring,
+ * add what we did free to the rx list */
+ desc->prev->hw_next = (u32)0;
+ priv->rx_head->prev->hw_next = priv->rx_head->mapping;
+ }
+
+ /* Optimization: If we did not actually process an EOQ (perhaps because
+ * of quota limits), check to see if the tail of the queue has EOQ set.
+ * We should immediately restart in that case so that the receiver can
+ * restart and run in parallel with more packet processing.
+ * This lets us handle slightly larger bursts before running
+ * out of ring space (assuming dev->weight < ring_size) */
+
+ if (!restart &&
+ (priv->rx_head->prev->dataflags & (CPMAC_OWN|CPMAC_EOQ))
+ == CPMAC_EOQ &&
+ (priv->rx_head->dataflags & CPMAC_OWN) != 0) {
+ /* reset EOQ so the poll loop (above) doesn't try to
+ * restart this when it eventually gets to this descriptor.
+ */
+ priv->rx_head->prev->dataflags &= ~CPMAC_EOQ;
+ restart = priv->rx_head;
+ }
+
+ if (restart) {
+ priv->dev->stats.rx_errors++;
+ priv->dev->stats.rx_fifo_errors++;
+ if (netif_msg_rx_err(priv) && net_ratelimit())
+ printk(KERN_WARNING "%s: rx dma ring overrun\n",
+ priv->dev->name);
+
+ if (unlikely((restart->dataflags & CPMAC_OWN) == 0)) {
+ if (netif_msg_drv(priv))
+ printk(KERN_ERR "%s: cpmac_poll is trying to "
+ "restart rx from a descriptor that's "
+ "not free: %p\n",
+ priv->dev->name, restart);
+ goto fatal_error;
+ }
+
+ cpmac_write(priv->regs, CPMAC_RX_PTR(0), restart->mapping);
+ }
+
priv->rx_head = desc;
spin_unlock(&priv->rx_lock);
- *budget -= received;
- dev->quota -= received;
if (unlikely(netif_msg_rx_status(priv)))
- printk(KERN_DEBUG "%s: poll processed %d packets\n", dev->name,
- received);
- if (desc->dataflags & CPMAC_OWN) {
- netif_rx_complete(dev);
- cpmac_write(priv->regs, CPMAC_RX_PTR(0), (u32)desc->mapping);
+ printk(KERN_DEBUG "%s: poll processed %d packets\n",
+ priv->dev->name, received);
+ if (processed == 0) {
+ /* we ran out of packets to read,
+ * revert to interrupt-driven mode */
+ napi_complete(napi);
cpmac_write(priv->regs, CPMAC_RX_INT_ENABLE, 1);
return 0;
}
return 1;
+
+fatal_error:
+ /* Something went horribly wrong.
+ * Reset hardware to try to recover rather than wedging. */
+
+ if (netif_msg_drv(priv)) {
+ printk(KERN_ERR "%s: cpmac_poll is confused. "
+ "Resetting hardware\n", priv->dev->name);
+ cpmac_dump_all_desc(priv->dev);
+ printk(KERN_DEBUG "%s: RX_PTR(0)=0x%08x RX_ACK(0)=0x%08x\n",
+ priv->dev->name,
+ cpmac_read(priv->regs, CPMAC_RX_PTR(0)),
+ cpmac_read(priv->regs, CPMAC_RX_ACK(0)));
+ }
+
+ spin_unlock(&priv->rx_lock);
+ napi_complete(napi);
+ netif_tx_stop_all_queues(priv->dev);
+ napi_disable(&priv->napi);
+
+ atomic_inc(&priv->reset_pending);
+ cpmac_hw_stop(priv->dev);
+ if (!schedule_work(&priv->reset_work))
+ atomic_dec(&priv->reset_pending);
+ return 0;
+
}
static int cpmac_start_xmit(struct sk_buff *skb, struct net_device *dev)
struct cpmac_desc *desc;
struct cpmac_priv *priv = netdev_priv(dev);
- if (unlikely(skb_padto(skb, ETH_ZLEN))) {
- if (netif_msg_tx_err(priv) && net_ratelimit())
- printk(KERN_WARNING
- "%s: tx: padding failed, dropping\n", dev->name);
- spin_lock(&priv->lock);
- dev->stats.tx_dropped++;
- spin_unlock(&priv->lock);
- return -ENOMEM;
- }
+ if (unlikely(atomic_read(&priv->reset_pending)))
+ return NETDEV_TX_BUSY;
+
+ if (unlikely(skb_padto(skb, ETH_ZLEN)))
+ return NETDEV_TX_OK;
len = max(skb->len, ETH_ZLEN);
- queue = skb->queue_mapping;
-#ifdef CONFIG_NETDEVICES_MULTIQUEUE
+ queue = skb_get_queue_mapping(skb);
netif_stop_subqueue(dev, queue);
-#else
- netif_stop_queue(dev);
-#endif
desc = &priv->desc_ring[queue];
if (unlikely(desc->dataflags & CPMAC_OWN)) {
if (netif_msg_tx_err(priv) && net_ratelimit())
- printk(KERN_WARNING "%s: tx dma ring full, dropping\n",
+ printk(KERN_WARNING "%s: tx dma ring full\n",
dev->name);
- spin_lock(&priv->lock);
- dev->stats.tx_dropped++;
- spin_unlock(&priv->lock);
- dev_kfree_skb_any(skb);
- return -ENOMEM;
+ return NETDEV_TX_BUSY;
}
spin_lock(&priv->lock);
- dev->trans_start = jiffies;
spin_unlock(&priv->lock);
desc->dataflags = CPMAC_SOP | CPMAC_EOP | CPMAC_OWN;
desc->skb = skb;
cpmac_dump_skb(dev, skb);
cpmac_write(priv->regs, CPMAC_TX_PTR(queue), (u32)desc->mapping);
- return 0;
+ return NETDEV_TX_OK;
}
static void cpmac_end_xmit(struct net_device *dev, int queue)
dev_kfree_skb_irq(desc->skb);
desc->skb = NULL;
-#ifdef CONFIG_NETDEVICES_MULTIQUEUE
- if (netif_subqueue_stopped(dev, queue))
+ if (__netif_subqueue_stopped(dev, queue))
netif_wake_subqueue(dev, queue);
-#else
- if (netif_queue_stopped(dev))
- netif_wake_queue(dev);
-#endif
} else {
if (netif_msg_tx_err(priv) && net_ratelimit())
printk(KERN_WARNING
"%s: end_xmit: spurious interrupt\n", dev->name);
-#ifdef CONFIG_NETDEVICES_MULTIQUEUE
- if (netif_subqueue_stopped(dev, queue))
+ if (__netif_subqueue_stopped(dev, queue))
netif_wake_subqueue(dev, queue);
-#else
- if (netif_queue_stopped(dev))
- netif_wake_queue(dev);
-#endif
}
}
desc->dataflags = CPMAC_OWN;
dev->stats.rx_dropped++;
}
+ desc->hw_next = desc->next->mapping;
desc = desc->next;
}
+ priv->rx_head->prev->hw_next = 0;
}
static void cpmac_clear_tx(struct net_device *dev)
int i;
if (unlikely(!priv->desc_ring))
return;
- for (i = 0; i < CPMAC_QUEUES; i++)
+ for (i = 0; i < CPMAC_QUEUES; i++) {
+ priv->desc_ring[i].dataflags = 0;
if (priv->desc_ring[i].skb) {
dev_kfree_skb_any(priv->desc_ring[i].skb);
- if (netif_subqueue_stopped(dev, i))
- netif_wake_subqueue(dev, i);
+ priv->desc_ring[i].skb = NULL;
}
+ }
}
static void cpmac_hw_error(struct work_struct *work)
spin_unlock(&priv->rx_lock);
cpmac_clear_tx(priv->dev);
cpmac_hw_start(priv->dev);
- netif_start_queue(priv->dev);
+ barrier();
+ atomic_dec(&priv->reset_pending);
+
+ netif_tx_wake_all_queues(priv->dev);
+ cpmac_write(priv->regs, CPMAC_MAC_INT_ENABLE, 3);
+}
+
+static void cpmac_check_status(struct net_device *dev)
+{
+ struct cpmac_priv *priv = netdev_priv(dev);
+
+ u32 macstatus = cpmac_read(priv->regs, CPMAC_MAC_STATUS);
+ int rx_channel = (macstatus >> 8) & 7;
+ int rx_code = (macstatus >> 12) & 15;
+ int tx_channel = (macstatus >> 16) & 7;
+ int tx_code = (macstatus >> 20) & 15;
+
+ if (rx_code || tx_code) {
+ if (netif_msg_drv(priv) && net_ratelimit()) {
+ /* Can't find any documentation on what these
+ *error codes actually are. So just log them and hope..
+ */
+ if (rx_code)
+ printk(KERN_WARNING "%s: host error %d on rx "
+ "channel %d (macstatus %08x), resetting\n",
+ dev->name, rx_code, rx_channel, macstatus);
+ if (tx_code)
+ printk(KERN_WARNING "%s: host error %d on tx "
+ "channel %d (macstatus %08x), resetting\n",
+ dev->name, tx_code, tx_channel, macstatus);
+ }
+
+ netif_tx_stop_all_queues(dev);
+ cpmac_hw_stop(dev);
+ if (schedule_work(&priv->reset_work))
+ atomic_inc(&priv->reset_pending);
+ if (unlikely(netif_msg_hw(priv)))
+ cpmac_dump_regs(dev);
+ }
+ cpmac_write(priv->regs, CPMAC_MAC_INT_CLEAR, 0xff);
}
static irqreturn_t cpmac_irq(int irq, void *dev_id)
int queue;
u32 status;
- if (!dev)
- return IRQ_NONE;
-
priv = netdev_priv(dev);
status = cpmac_read(priv->regs, CPMAC_MAC_INT_VECTOR);
if (status & MAC_INT_RX) {
queue = (status >> 8) & 7;
- netif_rx_schedule(dev);
- cpmac_write(priv->regs, CPMAC_RX_INT_CLEAR, 1 << queue);
+ if (napi_schedule_prep(&priv->napi)) {
+ cpmac_write(priv->regs, CPMAC_RX_INT_CLEAR, 1 << queue);
+ __napi_schedule(&priv->napi);
+ }
}
cpmac_write(priv->regs, CPMAC_MAC_EOI_VECTOR, 0);
- if (unlikely(status & (MAC_INT_HOST | MAC_INT_STATUS))) {
- if (netif_msg_drv(priv) && net_ratelimit())
- printk(KERN_ERR "%s: hw error, resetting...\n",
- dev->name);
- netif_stop_queue(dev);
- cpmac_hw_stop(dev);
- schedule_work(&priv->reset_work);
- if (unlikely(netif_msg_hw(priv)))
- cpmac_dump_regs(dev);
- }
+ if (unlikely(status & (MAC_INT_HOST | MAC_INT_STATUS)))
+ cpmac_check_status(dev);
return IRQ_HANDLED;
}
static void cpmac_tx_timeout(struct net_device *dev)
{
struct cpmac_priv *priv = netdev_priv(dev);
- int i;
spin_lock(&priv->lock);
dev->stats.tx_errors++;
spin_unlock(&priv->lock);
if (netif_msg_tx_err(priv) && net_ratelimit())
printk(KERN_WARNING "%s: transmit timeout\n", dev->name);
- /*
- * FIXME: waking up random queue is not the best thing to
- * do... on the other hand why we got here at all?
- */
-#ifdef CONFIG_NETDEVICES_MULTIQUEUE
- for (i = 0; i < CPMAC_QUEUES; i++)
- if (priv->desc_ring[i].skb) {
- dev_kfree_skb_any(priv->desc_ring[i].skb);
- netif_wake_subqueue(dev, i);
- break;
- }
-#else
- if (priv->desc_ring[0].skb)
- dev_kfree_skb_any(priv->desc_ring[0].skb);
- netif_wake_queue(dev);
-#endif
+
+ atomic_inc(&priv->reset_pending);
+ barrier();
+ cpmac_clear_tx(dev);
+ barrier();
+ atomic_dec(&priv->reset_pending);
+
+ netif_tx_wake_all_queues(priv->dev);
}
static int cpmac_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
{
struct cpmac_priv *priv = netdev_priv(dev);
- if (dev->flags && IFF_UP)
+ if (netif_running(dev))
return -EBUSY;
priv->ring_size = ring->rx_pending;
return 0;
spin_lock(&priv->lock);
if (priv->phy->link) {
- netif_start_queue(dev);
+ netif_tx_start_all_queues(dev);
if (priv->phy->duplex != priv->oldduplex) {
new_state = 1;
priv->oldduplex = priv->phy->duplex;
if (!priv->oldlink) {
new_state = 1;
priv->oldlink = 1;
- netif_schedule(dev);
}
} else if (priv->oldlink) {
- netif_stop_queue(dev);
new_state = 1;
priv->oldlink = 0;
priv->oldspeed = 0;
struct cpmac_desc *desc;
struct sk_buff *skb;
- priv->phy = phy_connect(dev, priv->phy_name, &cpmac_adjust_link,
- 0, PHY_INTERFACE_MODE_MII);
- if (IS_ERR(priv->phy)) {
- if (netif_msg_drv(priv))
- printk(KERN_ERR "%s: Could not attach to PHY\n",
- dev->name);
- return PTR_ERR(priv->phy);
- }
-
mem = platform_get_resource_byname(priv->pdev, IORESOURCE_MEM, "regs");
if (!request_mem_region(mem->start, mem->end - mem->start, dev->name)) {
if (netif_msg_drv(priv))
priv->rx_head = &priv->desc_ring[CPMAC_QUEUES];
for (i = 0, desc = priv->rx_head; i < priv->ring_size; i++, desc++) {
- skb = netdev_alloc_skb(dev, CPMAC_SKB_SIZE);
+ skb = netdev_alloc_skb_ip_align(dev, CPMAC_SKB_SIZE);
if (unlikely(!skb)) {
res = -ENOMEM;
goto fail_desc;
}
- skb_reserve(skb, 2);
desc->skb = skb;
desc->data_mapping = dma_map_single(&dev->dev, skb->data,
CPMAC_SKB_SIZE,
desc->buflen = CPMAC_SKB_SIZE;
desc->dataflags = CPMAC_OWN;
desc->next = &priv->rx_head[(i + 1) % priv->ring_size];
+ desc->next->prev = desc;
desc->hw_next = (u32)desc->next->mapping;
}
+ priv->rx_head->prev->hw_next = (u32)0;
+
if ((res = request_irq(dev->irq, cpmac_irq, IRQF_SHARED,
dev->name, dev))) {
if (netif_msg_drv(priv))
goto fail_irq;
}
+ atomic_set(&priv->reset_pending, 0);
INIT_WORK(&priv->reset_work, cpmac_hw_error);
cpmac_hw_start(dev);
+ napi_enable(&priv->napi);
priv->phy->state = PHY_CHANGELINK;
phy_start(priv->phy);
release_mem_region(mem->start, mem->end - mem->start);
fail_reserve:
- phy_disconnect(priv->phy);
-
return res;
}
struct cpmac_priv *priv = netdev_priv(dev);
struct resource *mem;
- netif_stop_queue(dev);
+ netif_tx_stop_all_queues(dev);
cancel_work_sync(&priv->reset_work);
+ napi_disable(&priv->napi);
phy_stop(priv->phy);
- phy_disconnect(priv->phy);
- priv->phy = NULL;
cpmac_hw_stop(dev);
return 0;
}
+static const struct net_device_ops cpmac_netdev_ops = {
+ .ndo_open = cpmac_open,
+ .ndo_stop = cpmac_stop,
+ .ndo_start_xmit = cpmac_start_xmit,
+ .ndo_tx_timeout = cpmac_tx_timeout,
+ .ndo_set_multicast_list = cpmac_set_multicast_list,
+ .ndo_do_ioctl = cpmac_ioctl,
+ .ndo_set_config = cpmac_config,
+ .ndo_change_mtu = eth_change_mtu,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_set_mac_address = eth_mac_addr,
+};
+
static int external_switch;
static int __devinit cpmac_probe(struct platform_device *pdev)
{
int rc, phy_id;
+ char mdio_bus_id[MII_BUS_ID_SIZE];
struct resource *mem;
struct cpmac_priv *priv;
struct net_device *dev;
pdata = pdev->dev.platform_data;
- for (phy_id = 0; phy_id < PHY_MAX_ADDR; phy_id++) {
- if (!(pdata->phy_mask & (1 << phy_id)))
- continue;
- if (!cpmac_mii.phy_map[phy_id])
- continue;
- break;
+ if (external_switch || dumb_switch) {
+ strncpy(mdio_bus_id, "0", MII_BUS_ID_SIZE); /* fixed phys bus */
+ phy_id = pdev->id;
+ } else {
+ for (phy_id = 0; phy_id < PHY_MAX_ADDR; phy_id++) {
+ if (!(pdata->phy_mask & (1 << phy_id)))
+ continue;
+ if (!cpmac_mii->phy_map[phy_id])
+ continue;
+ strncpy(mdio_bus_id, cpmac_mii->id, MII_BUS_ID_SIZE);
+ break;
+ }
}
if (phy_id == PHY_MAX_ADDR) {
- if (external_switch || dumb_switch)
- phy_id = 0;
- else {
- printk(KERN_ERR "cpmac: no PHY present\n");
- return -ENODEV;
- }
+ dev_err(&pdev->dev, "no PHY present, falling back to switch on MDIO bus 0\n");
+ strncpy(mdio_bus_id, "0", MII_BUS_ID_SIZE); /* fixed phys bus */
+ phy_id = pdev->id;
}
dev = alloc_etherdev_mq(sizeof(*priv), CPMAC_QUEUES);
dev->irq = platform_get_irq_byname(pdev, "irq");
- dev->open = cpmac_open;
- dev->stop = cpmac_stop;
- dev->set_config = cpmac_config;
- dev->hard_start_xmit = cpmac_start_xmit;
- dev->do_ioctl = cpmac_ioctl;
- dev->set_multicast_list = cpmac_set_multicast_list;
- dev->tx_timeout = cpmac_tx_timeout;
- dev->ethtool_ops = &cpmac_ethtool_ops;
- dev->poll = cpmac_poll;
- dev->weight = 64;
- dev->features |= NETIF_F_MULTI_QUEUE;
+ dev->netdev_ops = &cpmac_netdev_ops;
+ dev->ethtool_ops = &cpmac_ethtool_ops;
+
+ netif_napi_add(dev, &priv->napi, cpmac_poll, 64);
spin_lock_init(&priv->lock);
spin_lock_init(&priv->rx_lock);
priv->dev = dev;
priv->ring_size = 64;
priv->msg_enable = netif_msg_init(debug_level, 0xff);
- memcpy(dev->dev_addr, pdata->dev_addr, sizeof(dev->dev_addr));
- if (phy_id == 31) {
- snprintf(priv->phy_name, BUS_ID_SIZE, PHY_ID_FMT,
- cpmac_mii.id, phy_id);
- } else
- snprintf(priv->phy_name, BUS_ID_SIZE, "fixed@%d:%d", 100, 1);
+ memcpy(dev->dev_addr, pdata->dev_addr, sizeof(pdata->dev_addr));
+
+ snprintf(priv->phy_name, MII_BUS_ID_SIZE, PHY_ID_FMT, mdio_bus_id, phy_id);
+
+ priv->phy = phy_connect(dev, priv->phy_name, &cpmac_adjust_link, 0,
+ PHY_INTERFACE_MODE_MII);
+
+ if (IS_ERR(priv->phy)) {
+ if (netif_msg_drv(priv))
+ printk(KERN_ERR "%s: Could not attach to PHY\n",
+ dev->name);
+ return PTR_ERR(priv->phy);
+ }
if ((rc = register_netdev(dev))) {
printk(KERN_ERR "cpmac: error %i registering device %s\n", rc,
if (netif_msg_probe(priv)) {
printk(KERN_INFO
- "cpmac: device %s (regs: %p, irq: %d, phy: %s, mac: "
- MAC_FMT ")\n", dev->name, (void *)mem->start, dev->irq,
- priv->phy_name, MAC_ARG(dev->dev_addr));
+ "cpmac: device %s (regs: %p, irq: %d, phy: %s, "
+ "mac: %pM)\n", dev->name, (void *)mem->start, dev->irq,
+ priv->phy_name, dev->dev_addr);
}
return 0;
static struct platform_driver cpmac_driver = {
.driver.name = "cpmac",
+ .driver.owner = THIS_MODULE,
.probe = cpmac_probe,
.remove = __devexit_p(cpmac_remove),
};
u32 mask;
int i, res;
- cpmac_mii.priv = ioremap(AR7_REGS_MDIO, 256);
+ cpmac_mii = mdiobus_alloc();
+ if (cpmac_mii == NULL)
+ return -ENOMEM;
- if (!cpmac_mii.priv) {
+ cpmac_mii->name = "cpmac-mii";
+ cpmac_mii->read = cpmac_mdio_read;
+ cpmac_mii->write = cpmac_mdio_write;
+ cpmac_mii->reset = cpmac_mdio_reset;
+ cpmac_mii->irq = mii_irqs;
+
+ cpmac_mii->priv = ioremap(AR7_REGS_MDIO, 256);
+
+ if (!cpmac_mii->priv) {
printk(KERN_ERR "Can't ioremap mdio registers\n");
- return -ENXIO;
+ res = -ENXIO;
+ goto fail_alloc;
}
#warning FIXME: unhardcode gpio&reset bits
ar7_device_reset(AR7_RESET_BIT_CPMAC_HI);
ar7_device_reset(AR7_RESET_BIT_EPHY);
- cpmac_mii.reset(&cpmac_mii);
+ cpmac_mii->reset(cpmac_mii);
- for (i = 0; i < 300000; i++)
- if ((mask = cpmac_read(cpmac_mii.priv, CPMAC_MDIO_ALIVE)))
+ for (i = 0; i < 300; i++)
+ if ((mask = cpmac_read(cpmac_mii->priv, CPMAC_MDIO_ALIVE)))
break;
else
- cpu_relax();
+ msleep(10);
mask &= 0x7fffffff;
if (mask & (mask - 1)) {
mask = 0;
}
- cpmac_mii.phy_mask = ~(mask | 0x80000000);
+ cpmac_mii->phy_mask = ~(mask | 0x80000000);
+ snprintf(cpmac_mii->id, MII_BUS_ID_SIZE, "1");
- res = mdiobus_register(&cpmac_mii);
+ res = mdiobus_register(cpmac_mii);
if (res)
goto fail_mii;
return 0;
fail_cpmac:
- mdiobus_unregister(&cpmac_mii);
+ mdiobus_unregister(cpmac_mii);
fail_mii:
- iounmap(cpmac_mii.priv);
+ iounmap(cpmac_mii->priv);
+
+fail_alloc:
+ mdiobus_free(cpmac_mii);
return res;
}
void __devexit cpmac_exit(void)
{
platform_driver_unregister(&cpmac_driver);
- mdiobus_unregister(&cpmac_mii);
- iounmap(cpmac_mii.priv);
+ mdiobus_unregister(cpmac_mii);
+ iounmap(cpmac_mii->priv);
+ mdiobus_free(cpmac_mii);
}
module_init(cpmac_init);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff