#include <asm/delay.h>
#include <asm/dma-mapping.h>
+static char mv643xx_driver_name[] = "mv643xx_eth";
+static char mv643xx_driver_version[] = "1.0";
+
#define MV643XX_CHECKSUM_OFFLOAD_TX
#define MV643XX_NAPI
#define MV643XX_TX_FAST_REFILL
struct sk_buff *return_info; /* User resource return information */
};
-/* Ethernet port specific information */
+
+/* global *******************************************************************/
+struct mv643xx_shared_private {
+ void __iomem *eth_base;
+
+ /* used to protect SMI_REG, which is shared across ports */
+ spinlock_t phy_lock;
+
+ u32 win_protect;
+
+ unsigned int t_clk;
+};
+
+
+/* per-port *****************************************************************/
struct mv643xx_mib_counters {
u64 good_octets_received;
u32 bad_octets_received;
u32 late_collision;
};
-struct mv643xx_shared_private {
- void __iomem *eth_base;
-
- /* used to protect SMI_REG, which is shared across ports */
- spinlock_t phy_lock;
-
- u32 win_protect;
-
- unsigned int t_clk;
-};
-
struct mv643xx_private {
struct mv643xx_shared_private *shared;
int port_num; /* User Ethernet port number */
struct mii_if_info mii;
};
-/* Static function declarations */
-static void eth_port_init(struct mv643xx_private *mp);
-static void eth_port_reset(struct mv643xx_private *mp);
-static void eth_port_start(struct net_device *dev);
-static void ethernet_phy_reset(struct mv643xx_private *mp);
+/* port register accessors **************************************************/
+static inline u32 rdl(struct mv643xx_private *mp, int offset)
+{
+ return readl(mp->shared->eth_base + offset);
+}
-static void eth_port_write_smi_reg(struct mv643xx_private *mp,
- unsigned int phy_reg, unsigned int value);
+static inline void wrl(struct mv643xx_private *mp, int offset, u32 data)
+{
+ writel(data, mp->shared->eth_base + offset);
+}
-static void eth_port_read_smi_reg(struct mv643xx_private *mp,
- unsigned int phy_reg, unsigned int *value);
-static void eth_clear_mib_counters(struct mv643xx_private *mp);
+/* rxq/txq helper functions *************************************************/
+static void mv643xx_eth_port_enable_rx(struct mv643xx_private *mp,
+ unsigned int queues)
+{
+ wrl(mp, RECEIVE_QUEUE_COMMAND_REG(mp->port_num), queues);
+}
-static ETH_FUNC_RET_STATUS eth_port_receive(struct mv643xx_private *mp,
- struct pkt_info *p_pkt_info);
-static ETH_FUNC_RET_STATUS eth_rx_return_buff(struct mv643xx_private *mp,
- struct pkt_info *p_pkt_info);
+static unsigned int mv643xx_eth_port_disable_rx(struct mv643xx_private *mp)
+{
+ unsigned int port_num = mp->port_num;
+ u32 queues;
-static void eth_port_uc_addr_get(struct mv643xx_private *mp,
- unsigned char *p_addr);
-static void eth_port_uc_addr_set(struct mv643xx_private *mp,
- unsigned char *p_addr);
-static void eth_port_set_multicast_list(struct net_device *);
-static void mv643xx_eth_port_enable_tx(struct mv643xx_private *mp,
- unsigned int queues);
-static void mv643xx_eth_port_enable_rx(struct mv643xx_private *mp,
- unsigned int queues);
-static unsigned int mv643xx_eth_port_disable_tx(struct mv643xx_private *mp);
-static unsigned int mv643xx_eth_port_disable_rx(struct mv643xx_private *mp);
-static int mv643xx_eth_open(struct net_device *);
-static int mv643xx_eth_stop(struct net_device *);
-static void eth_port_init_mac_tables(struct mv643xx_private *mp);
-#ifdef MV643XX_NAPI
-static int mv643xx_poll(struct napi_struct *napi, int budget);
-#endif
-static int ethernet_phy_get(struct mv643xx_private *mp);
-static void ethernet_phy_set(struct mv643xx_private *mp, int phy_addr);
-static int ethernet_phy_detect(struct mv643xx_private *mp);
-static int mv643xx_mdio_read(struct net_device *dev, int phy_id, int location);
-static void mv643xx_mdio_write(struct net_device *dev, int phy_id, int location, int val);
-static int mv643xx_eth_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
-static const struct ethtool_ops mv643xx_ethtool_ops;
+ /* Stop Rx port activity. Check port Rx activity. */
+ queues = rdl(mp, RECEIVE_QUEUE_COMMAND_REG(port_num)) & 0xFF;
+ if (queues) {
+ /* Issue stop command for active queues only */
+ wrl(mp, RECEIVE_QUEUE_COMMAND_REG(port_num), (queues << 8));
-static char mv643xx_driver_name[] = "mv643xx_eth";
-static char mv643xx_driver_version[] = "1.0";
+ /* Wait for all Rx activity to terminate. */
+ /* Check port cause register that all Rx queues are stopped */
+ while (rdl(mp, RECEIVE_QUEUE_COMMAND_REG(port_num)) & 0xFF)
+ udelay(PHY_WAIT_MICRO_SECONDS);
+ }
-static inline u32 rdl(struct mv643xx_private *mp, int offset)
+ return queues;
+}
+
+static void mv643xx_eth_port_enable_tx(struct mv643xx_private *mp,
+ unsigned int queues)
{
- return readl(mp->shared->eth_base + offset);
+ wrl(mp, TRANSMIT_QUEUE_COMMAND_REG(mp->port_num), queues);
}
-static inline void wrl(struct mv643xx_private *mp, int offset, u32 data)
+static unsigned int mv643xx_eth_port_disable_tx(struct mv643xx_private *mp)
{
- writel(data, mp->shared->eth_base + offset);
+ unsigned int port_num = mp->port_num;
+ u32 queues;
+
+ /* Stop Tx port activity. Check port Tx activity. */
+ queues = rdl(mp, TRANSMIT_QUEUE_COMMAND_REG(port_num)) & 0xFF;
+ if (queues) {
+ /* Issue stop command for active queues only */
+ wrl(mp, TRANSMIT_QUEUE_COMMAND_REG(port_num), (queues << 8));
+
+ /* Wait for all Tx activity to terminate. */
+ /* Check port cause register that all Tx queues are stopped */
+ while (rdl(mp, TRANSMIT_QUEUE_COMMAND_REG(port_num)) & 0xFF)
+ udelay(PHY_WAIT_MICRO_SECONDS);
+
+ /* Wait for Tx FIFO to empty */
+ while (rdl(mp, PORT_STATUS_REG(port_num)) &
+ ETH_PORT_TX_FIFO_EMPTY)
+ udelay(PHY_WAIT_MICRO_SECONDS);
+ }
+
+ return queues;
}
+
+/* rx ***********************************************************************/
+static void mv643xx_eth_free_completed_tx_descs(struct net_device *dev);
+
/*
- * Changes MTU (maximum transfer unit) of the gigabit ethenret port
+ * eth_rx_return_buff - Returns a Rx buffer back to the Rx ring.
*
- * Input : pointer to ethernet interface network device structure
- * new mtu size
- * Output : 0 upon success, -EINVAL upon failure
+ * DESCRIPTION:
+ * This routine returns a Rx buffer back to the Rx ring. It retrieves the
+ * next 'used' descriptor and attached the returned buffer to it.
+ * In case the Rx ring was in "resource error" condition, where there are
+ * no available Rx resources, the function resets the resource error flag.
+ *
+ * INPUT:
+ * struct mv643xx_private *mp Ethernet Port Control srtuct.
+ * struct pkt_info *p_pkt_info Information on returned buffer.
+ *
+ * OUTPUT:
+ * New available Rx resource in Rx descriptor ring.
+ *
+ * RETURN:
+ * ETH_ERROR in case the routine can not access Rx desc ring.
+ * ETH_OK otherwise.
*/
-static int mv643xx_eth_change_mtu(struct net_device *dev, int new_mtu)
+static ETH_FUNC_RET_STATUS eth_rx_return_buff(struct mv643xx_private *mp,
+ struct pkt_info *p_pkt_info)
{
- if ((new_mtu > 9500) || (new_mtu < 64))
- return -EINVAL;
+ int used_rx_desc; /* Where to return Rx resource */
+ volatile struct eth_rx_desc *p_used_rx_desc;
+ unsigned long flags;
- dev->mtu = new_mtu;
- if (!netif_running(dev))
- return 0;
+ spin_lock_irqsave(&mp->lock, flags);
- /*
- * Stop and then re-open the interface. This will allocate RX
- * skbs of the new MTU.
- * There is a possible danger that the open will not succeed,
- * due to memory being full, which might fail the open function.
- */
- mv643xx_eth_stop(dev);
- if (mv643xx_eth_open(dev)) {
- printk(KERN_ERR "%s: Fatal error on opening device\n",
- dev->name);
- }
+ /* Get 'used' Rx descriptor */
+ used_rx_desc = mp->rx_used_desc_q;
+ p_used_rx_desc = &mp->p_rx_desc_area[used_rx_desc];
- return 0;
+ p_used_rx_desc->buf_ptr = p_pkt_info->buf_ptr;
+ p_used_rx_desc->buf_size = p_pkt_info->byte_cnt;
+ mp->rx_skb[used_rx_desc] = p_pkt_info->return_info;
+
+ /* Flush the write pipe */
+
+ /* Return the descriptor to DMA ownership */
+ wmb();
+ p_used_rx_desc->cmd_sts =
+ ETH_BUFFER_OWNED_BY_DMA | ETH_RX_ENABLE_INTERRUPT;
+ wmb();
+
+ /* Move the used descriptor pointer to the next descriptor */
+ mp->rx_used_desc_q = (used_rx_desc + 1) % mp->rx_ring_size;
+
+ /* Any Rx return cancels the Rx resource error status */
+ mp->rx_resource_err = 0;
+
+ spin_unlock_irqrestore(&mp->lock, flags);
+
+ return ETH_OK;
}
/*
}
/*
- * mv643xx_eth_update_mac_address
+ * eth_port_receive - Get received information from Rx ring.
*
- * Update the MAC address of the port in the address table
+ * DESCRIPTION:
+ * This routine returns the received data to the caller. There is no
+ * data copying during routine operation. All information is returned
+ * using pointer to packet information struct passed from the caller.
+ * If the routine exhausts Rx ring resources then the resource error flag
+ * is set.
*
- * Input : pointer to ethernet interface network device structure
- * Output : N/A
- */
-static void mv643xx_eth_update_mac_address(struct net_device *dev)
-{
- struct mv643xx_private *mp = netdev_priv(dev);
-
- eth_port_init_mac_tables(mp);
- eth_port_uc_addr_set(mp, dev->dev_addr);
-}
-
-/*
- * mv643xx_eth_set_rx_mode
+ * INPUT:
+ * struct mv643xx_private *mp Ethernet Port Control srtuct.
+ * struct pkt_info *p_pkt_info User packet buffer.
*
- * Change from promiscuos to regular rx mode
+ * OUTPUT:
+ * Rx ring current and used indexes are updated.
*
- * Input : pointer to ethernet interface network device structure
- * Output : N/A
+ * RETURN:
+ * ETH_ERROR in case the routine can not access Rx desc ring.
+ * ETH_QUEUE_FULL if Rx ring resources are exhausted.
+ * ETH_END_OF_JOB if there is no received data.
+ * ETH_OK otherwise.
*/
-static void mv643xx_eth_set_rx_mode(struct net_device *dev)
+static ETH_FUNC_RET_STATUS eth_port_receive(struct mv643xx_private *mp,
+ struct pkt_info *p_pkt_info)
{
- struct mv643xx_private *mp = netdev_priv(dev);
- u32 config_reg;
+ int rx_next_curr_desc, rx_curr_desc, rx_used_desc;
+ volatile struct eth_rx_desc *p_rx_desc;
+ unsigned int command_status;
+ unsigned long flags;
- config_reg = rdl(mp, PORT_CONFIG_REG(mp->port_num));
- if (dev->flags & IFF_PROMISC)
- config_reg |= (u32) UNICAST_PROMISCUOUS_MODE;
- else
- config_reg &= ~(u32) UNICAST_PROMISCUOUS_MODE;
- wrl(mp, PORT_CONFIG_REG(mp->port_num), config_reg);
+ /* Do not process Rx ring in case of Rx ring resource error */
+ if (mp->rx_resource_err)
+ return ETH_QUEUE_FULL;
- eth_port_set_multicast_list(dev);
-}
+ spin_lock_irqsave(&mp->lock, flags);
-/*
- * mv643xx_eth_set_mac_address
- *
- * Change the interface's mac address.
- * No special hardware thing should be done because interface is always
- * put in promiscuous mode.
- *
- * Input : pointer to ethernet interface network device structure and
- * a pointer to the designated entry to be added to the cache.
- * Output : zero upon success, negative upon failure
- */
-static int mv643xx_eth_set_mac_address(struct net_device *dev, void *addr)
-{
- int i;
+ /* Get the Rx Desc ring 'curr and 'used' indexes */
+ rx_curr_desc = mp->rx_curr_desc_q;
+ rx_used_desc = mp->rx_used_desc_q;
- for (i = 0; i < 6; i++)
- /* +2 is for the offset of the HW addr type */
- dev->dev_addr[i] = ((unsigned char *)addr)[i + 2];
- mv643xx_eth_update_mac_address(dev);
- return 0;
-}
+ p_rx_desc = &mp->p_rx_desc_area[rx_curr_desc];
-/*
- * mv643xx_eth_tx_timeout
- *
- * Called upon a timeout on transmitting a packet
- *
- * Input : pointer to ethernet interface network device structure.
- * Output : N/A
- */
-static void mv643xx_eth_tx_timeout(struct net_device *dev)
-{
- struct mv643xx_private *mp = netdev_priv(dev);
-
- printk(KERN_INFO "%s: TX timeout ", dev->name);
-
- /* Do the reset outside of interrupt context */
- schedule_work(&mp->tx_timeout_task);
-}
-
-/*
- * mv643xx_eth_tx_timeout_task
- *
- * Actual routine to reset the adapter when a timeout on Tx has occurred
- */
-static void mv643xx_eth_tx_timeout_task(struct work_struct *ugly)
-{
- struct mv643xx_private *mp = container_of(ugly, struct mv643xx_private,
- tx_timeout_task);
- struct net_device *dev = mp->dev;
-
- if (!netif_running(dev))
- return;
-
- netif_stop_queue(dev);
-
- eth_port_reset(mp);
- eth_port_start(dev);
-
- if (mp->tx_ring_size - mp->tx_desc_count >= MAX_DESCS_PER_SKB)
- netif_wake_queue(dev);
-}
-
-/**
- * mv643xx_eth_free_tx_descs - Free the tx desc data for completed descriptors
- *
- * If force is non-zero, frees uncompleted descriptors as well
- */
-static int mv643xx_eth_free_tx_descs(struct net_device *dev, int force)
-{
- struct mv643xx_private *mp = netdev_priv(dev);
- struct eth_tx_desc *desc;
- u32 cmd_sts;
- struct sk_buff *skb;
- unsigned long flags;
- int tx_index;
- dma_addr_t addr;
- int count;
- int released = 0;
-
- while (mp->tx_desc_count > 0) {
- spin_lock_irqsave(&mp->lock, flags);
-
- /* tx_desc_count might have changed before acquiring the lock */
- if (mp->tx_desc_count <= 0) {
- spin_unlock_irqrestore(&mp->lock, flags);
- return released;
- }
-
- tx_index = mp->tx_used_desc_q;
- desc = &mp->p_tx_desc_area[tx_index];
- cmd_sts = desc->cmd_sts;
-
- if (!force && (cmd_sts & ETH_BUFFER_OWNED_BY_DMA)) {
- spin_unlock_irqrestore(&mp->lock, flags);
- return released;
- }
-
- mp->tx_used_desc_q = (tx_index + 1) % mp->tx_ring_size;
- mp->tx_desc_count--;
-
- addr = desc->buf_ptr;
- count = desc->byte_cnt;
- skb = mp->tx_skb[tx_index];
- if (skb)
- mp->tx_skb[tx_index] = NULL;
-
- if (cmd_sts & ETH_ERROR_SUMMARY) {
- printk("%s: Error in TX\n", dev->name);
- dev->stats.tx_errors++;
- }
+ /* The following parameters are used to save readings from memory */
+ command_status = p_rx_desc->cmd_sts;
+ rmb();
+ /* Nothing to receive... */
+ if (command_status & (ETH_BUFFER_OWNED_BY_DMA)) {
spin_unlock_irqrestore(&mp->lock, flags);
+ return ETH_END_OF_JOB;
+ }
- if (cmd_sts & ETH_TX_FIRST_DESC)
- dma_unmap_single(NULL, addr, count, DMA_TO_DEVICE);
- else
- dma_unmap_page(NULL, addr, count, DMA_TO_DEVICE);
-
- if (skb)
- dev_kfree_skb_irq(skb);
+ p_pkt_info->byte_cnt = (p_rx_desc->byte_cnt) - RX_BUF_OFFSET;
+ p_pkt_info->cmd_sts = command_status;
+ p_pkt_info->buf_ptr = (p_rx_desc->buf_ptr) + RX_BUF_OFFSET;
+ p_pkt_info->return_info = mp->rx_skb[rx_curr_desc];
+ p_pkt_info->l4i_chk = p_rx_desc->buf_size;
- released = 1;
- }
+ /*
+ * Clean the return info field to indicate that the
+ * packet has been moved to the upper layers
+ */
+ mp->rx_skb[rx_curr_desc] = NULL;
- return released;
-}
+ /* Update current index in data structure */
+ rx_next_curr_desc = (rx_curr_desc + 1) % mp->rx_ring_size;
+ mp->rx_curr_desc_q = rx_next_curr_desc;
-static void mv643xx_eth_free_completed_tx_descs(struct net_device *dev)
-{
- struct mv643xx_private *mp = netdev_priv(dev);
+ /* Rx descriptors exhausted. Set the Rx ring resource error flag */
+ if (rx_next_curr_desc == rx_used_desc)
+ mp->rx_resource_err = 1;
- if (mv643xx_eth_free_tx_descs(dev, 0) &&
- mp->tx_ring_size - mp->tx_desc_count >= MAX_DESCS_PER_SKB)
- netif_wake_queue(dev);
-}
+ spin_unlock_irqrestore(&mp->lock, flags);
-static void mv643xx_eth_free_all_tx_descs(struct net_device *dev)
-{
- mv643xx_eth_free_tx_descs(dev, 1);
+ return ETH_OK;
}
/*
return received_packets;
}
-/* Set the mv643xx port configuration register for the speed/duplex mode. */
-static void mv643xx_eth_update_pscr(struct net_device *dev,
- struct ethtool_cmd *ecmd)
+#ifdef MV643XX_NAPI
+/*
+ * mv643xx_poll
+ *
+ * This function is used in case of NAPI
+ */
+static int mv643xx_poll(struct napi_struct *napi, int budget)
{
- struct mv643xx_private *mp = netdev_priv(dev);
- int port_num = mp->port_num;
- u32 o_pscr, n_pscr;
- unsigned int queues;
-
- o_pscr = rdl(mp, PORT_SERIAL_CONTROL_REG(port_num));
- n_pscr = o_pscr;
-
- /* clear speed, duplex and rx buffer size fields */
- n_pscr &= ~(SET_MII_SPEED_TO_100 |
- SET_GMII_SPEED_TO_1000 |
- SET_FULL_DUPLEX_MODE |
- MAX_RX_PACKET_MASK);
-
- if (ecmd->duplex == DUPLEX_FULL)
- n_pscr |= SET_FULL_DUPLEX_MODE;
+ struct mv643xx_private *mp = container_of(napi, struct mv643xx_private, napi);
+ struct net_device *dev = mp->dev;
+ unsigned int port_num = mp->port_num;
+ int work_done;
- if (ecmd->speed == SPEED_1000)
- n_pscr |= SET_GMII_SPEED_TO_1000 |
- MAX_RX_PACKET_9700BYTE;
- else {
- if (ecmd->speed == SPEED_100)
- n_pscr |= SET_MII_SPEED_TO_100;
- n_pscr |= MAX_RX_PACKET_1522BYTE;
+#ifdef MV643XX_TX_FAST_REFILL
+ if (++mp->tx_clean_threshold > 5) {
+ mv643xx_eth_free_completed_tx_descs(dev);
+ mp->tx_clean_threshold = 0;
}
+#endif
- if (n_pscr != o_pscr) {
- if ((o_pscr & SERIAL_PORT_ENABLE) == 0)
- wrl(mp, PORT_SERIAL_CONTROL_REG(port_num), n_pscr);
- else {
- queues = mv643xx_eth_port_disable_tx(mp);
+ work_done = 0;
+ if ((rdl(mp, RX_CURRENT_QUEUE_DESC_PTR_0(port_num)))
+ != (u32) mp->rx_used_desc_q)
+ work_done = mv643xx_eth_receive_queue(dev, budget);
- o_pscr &= ~SERIAL_PORT_ENABLE;
- wrl(mp, PORT_SERIAL_CONTROL_REG(port_num), o_pscr);
- wrl(mp, PORT_SERIAL_CONTROL_REG(port_num), n_pscr);
- wrl(mp, PORT_SERIAL_CONTROL_REG(port_num), n_pscr);
- if (queues)
- mv643xx_eth_port_enable_tx(mp, queues);
- }
+ if (work_done < budget) {
+ netif_rx_complete(dev, napi);
+ wrl(mp, INTERRUPT_CAUSE_REG(port_num), 0);
+ wrl(mp, INTERRUPT_CAUSE_EXTEND_REG(port_num), 0);
+ wrl(mp, INTERRUPT_MASK_REG(port_num), ETH_INT_UNMASK_ALL);
}
+
+ return work_done;
}
+#endif
-/*
- * mv643xx_eth_int_handler
- *
- * Main interrupt handler for the gigbit ethernet ports
+
+/* tx ***********************************************************************/
+/**
+ * has_tiny_unaligned_frags - check if skb has any small, unaligned fragments
*
- * Input : irq - irq number (not used)
- * dev_id - a pointer to the required interface's data structure
- * regs - not used
- * Output : N/A
+ * Hardware can't handle unaligned fragments smaller than 9 bytes.
+ * This helper function detects that case.
*/
-static irqreturn_t mv643xx_eth_int_handler(int irq, void *dev_id)
+static inline unsigned int has_tiny_unaligned_frags(struct sk_buff *skb)
{
- struct net_device *dev = (struct net_device *)dev_id;
- struct mv643xx_private *mp = netdev_priv(dev);
- u32 eth_int_cause, eth_int_cause_ext = 0;
- unsigned int port_num = mp->port_num;
+ unsigned int frag;
+ skb_frag_t *fragp;
- /* Read interrupt cause registers */
- eth_int_cause = rdl(mp, INTERRUPT_CAUSE_REG(port_num)) &
- ETH_INT_UNMASK_ALL;
- if (eth_int_cause & ETH_INT_CAUSE_EXT) {
- eth_int_cause_ext = rdl(mp,
- INTERRUPT_CAUSE_EXTEND_REG(port_num)) &
- ETH_INT_UNMASK_ALL_EXT;
- wrl(mp, INTERRUPT_CAUSE_EXTEND_REG(port_num),
- ~eth_int_cause_ext);
+ for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
+ fragp = &skb_shinfo(skb)->frags[frag];
+ if (fragp->size <= 8 && fragp->page_offset & 0x7)
+ return 1;
}
+ return 0;
+}
- /* PHY status changed */
- if (eth_int_cause_ext & (ETH_INT_CAUSE_PHY | ETH_INT_CAUSE_STATE)) {
- struct ethtool_cmd cmd;
+/**
+ * eth_alloc_tx_desc_index - return the index of the next available tx desc
+ */
+static int eth_alloc_tx_desc_index(struct mv643xx_private *mp)
+{
+ int tx_desc_curr;
- if (mii_link_ok(&mp->mii)) {
- mii_ethtool_gset(&mp->mii, &cmd);
- mv643xx_eth_update_pscr(dev, &cmd);
- mv643xx_eth_port_enable_tx(mp, ETH_TX_QUEUES_ENABLED);
- if (!netif_carrier_ok(dev)) {
- netif_carrier_on(dev);
- if (mp->tx_ring_size - mp->tx_desc_count >=
- MAX_DESCS_PER_SKB)
- netif_wake_queue(dev);
- }
- } else if (netif_carrier_ok(dev)) {
- netif_stop_queue(dev);
- netif_carrier_off(dev);
- }
- }
+ BUG_ON(mp->tx_desc_count >= mp->tx_ring_size);
-#ifdef MV643XX_NAPI
- if (eth_int_cause & ETH_INT_CAUSE_RX) {
- /* schedule the NAPI poll routine to maintain port */
- wrl(mp, INTERRUPT_MASK_REG(port_num), ETH_INT_MASK_ALL);
+ tx_desc_curr = mp->tx_curr_desc_q;
+ mp->tx_curr_desc_q = (tx_desc_curr + 1) % mp->tx_ring_size;
- /* wait for previous write to complete */
- rdl(mp, INTERRUPT_MASK_REG(port_num));
+ BUG_ON(mp->tx_curr_desc_q == mp->tx_used_desc_q);
- netif_rx_schedule(dev, &mp->napi);
- }
-#else
- if (eth_int_cause & ETH_INT_CAUSE_RX)
- mv643xx_eth_receive_queue(dev, INT_MAX);
-#endif
- if (eth_int_cause_ext & ETH_INT_CAUSE_TX)
- mv643xx_eth_free_completed_tx_descs(dev);
+ return tx_desc_curr;
+}
- /*
- * If no real interrupt occured, exit.
- * This can happen when using gigE interrupt coalescing mechanism.
- */
- if ((eth_int_cause == 0x0) && (eth_int_cause_ext == 0x0))
- return IRQ_NONE;
+/**
+ * eth_tx_fill_frag_descs - fill tx hw descriptors for an skb's fragments.
+ *
+ * Ensure the data for each fragment to be transmitted is mapped properly,
+ * then fill in descriptors in the tx hw queue.
+ */
+static void eth_tx_fill_frag_descs(struct mv643xx_private *mp,
+ struct sk_buff *skb)
+{
+ int frag;
+ int tx_index;
+ struct eth_tx_desc *desc;
- return IRQ_HANDLED;
+ for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
+ skb_frag_t *this_frag = &skb_shinfo(skb)->frags[frag];
+
+ tx_index = eth_alloc_tx_desc_index(mp);
+ desc = &mp->p_tx_desc_area[tx_index];
+
+ desc->cmd_sts = ETH_BUFFER_OWNED_BY_DMA;
+ /* Last Frag enables interrupt and frees the skb */
+ if (frag == (skb_shinfo(skb)->nr_frags - 1)) {
+ desc->cmd_sts |= ETH_ZERO_PADDING |
+ ETH_TX_LAST_DESC |
+ ETH_TX_ENABLE_INTERRUPT;
+ mp->tx_skb[tx_index] = skb;
+ } else
+ mp->tx_skb[tx_index] = NULL;
+
+ desc = &mp->p_tx_desc_area[tx_index];
+ desc->l4i_chk = 0;
+ desc->byte_cnt = this_frag->size;
+ desc->buf_ptr = dma_map_page(NULL, this_frag->page,
+ this_frag->page_offset,
+ this_frag->size,
+ DMA_TO_DEVICE);
+ }
}
-#ifdef MV643XX_COAL
+static inline __be16 sum16_as_be(__sum16 sum)
+{
+ return (__force __be16)sum;
+}
-/*
- * eth_port_set_rx_coal - Sets coalescing interrupt mechanism on RX path
- *
- * DESCRIPTION:
- * This routine sets the RX coalescing interrupt mechanism parameter.
- * This parameter is a timeout counter, that counts in 64 t_clk
- * chunks ; that when timeout event occurs a maskable interrupt
- * occurs.
- * The parameter is calculated using the tClk of the MV-643xx chip
- * , and the required delay of the interrupt in usec.
- *
- * INPUT:
- * struct mv643xx_private *mp Ethernet port
- * unsigned int delay Delay in usec
- *
- * OUTPUT:
- * Interrupt coalescing mechanism value is set in MV-643xx chip.
- *
- * RETURN:
- * The interrupt coalescing value set in the gigE port.
+/**
+ * eth_tx_submit_descs_for_skb - submit data from an skb to the tx hw
*
+ * Ensure the data for an skb to be transmitted is mapped properly,
+ * then fill in descriptors in the tx hw queue and start the hardware.
*/
-static unsigned int eth_port_set_rx_coal(struct mv643xx_private *mp,
- unsigned int delay)
+static void eth_tx_submit_descs_for_skb(struct mv643xx_private *mp,
+ struct sk_buff *skb)
{
- unsigned int port_num = mp->port_num;
- unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64;
+ int tx_index;
+ struct eth_tx_desc *desc;
+ u32 cmd_sts;
+ int length;
+ int nr_frags = skb_shinfo(skb)->nr_frags;
- /* Set RX Coalescing mechanism */
- wrl(mp, SDMA_CONFIG_REG(port_num),
- ((coal & 0x3fff) << 8) |
- (rdl(mp, SDMA_CONFIG_REG(port_num))
- & 0xffc000ff));
+ cmd_sts = ETH_TX_FIRST_DESC | ETH_GEN_CRC | ETH_BUFFER_OWNED_BY_DMA;
- return coal;
+ tx_index = eth_alloc_tx_desc_index(mp);
+ desc = &mp->p_tx_desc_area[tx_index];
+
+ if (nr_frags) {
+ eth_tx_fill_frag_descs(mp, skb);
+
+ length = skb_headlen(skb);
+ mp->tx_skb[tx_index] = NULL;
+ } else {
+ cmd_sts |= ETH_ZERO_PADDING |
+ ETH_TX_LAST_DESC |
+ ETH_TX_ENABLE_INTERRUPT;
+ length = skb->len;
+ mp->tx_skb[tx_index] = skb;
+ }
+
+ desc->byte_cnt = length;
+ desc->buf_ptr = dma_map_single(NULL, skb->data, length, DMA_TO_DEVICE);
+
+ if (skb->ip_summed == CHECKSUM_PARTIAL) {
+ BUG_ON(skb->protocol != htons(ETH_P_IP));
+
+ cmd_sts |= ETH_GEN_TCP_UDP_CHECKSUM |
+ ETH_GEN_IP_V_4_CHECKSUM |
+ ip_hdr(skb)->ihl << ETH_TX_IHL_SHIFT;
+
+ switch (ip_hdr(skb)->protocol) {
+ case IPPROTO_UDP:
+ cmd_sts |= ETH_UDP_FRAME;
+ desc->l4i_chk = ntohs(sum16_as_be(udp_hdr(skb)->check));
+ break;
+ case IPPROTO_TCP:
+ desc->l4i_chk = ntohs(sum16_as_be(tcp_hdr(skb)->check));
+ break;
+ default:
+ BUG();
+ }
+ } else {
+ /* Errata BTS #50, IHL must be 5 if no HW checksum */
+ cmd_sts |= 5 << ETH_TX_IHL_SHIFT;
+ desc->l4i_chk = 0;
+ }
+
+ /* ensure all other descriptors are written before first cmd_sts */
+ wmb();
+ desc->cmd_sts = cmd_sts;
+
+ /* ensure all descriptors are written before poking hardware */
+ wmb();
+ mv643xx_eth_port_enable_tx(mp, ETH_TX_QUEUES_ENABLED);
+
+ mp->tx_desc_count += nr_frags + 1;
}
-#endif
-/*
- * eth_port_set_tx_coal - Sets coalescing interrupt mechanism on TX path
- *
- * DESCRIPTION:
- * This routine sets the TX coalescing interrupt mechanism parameter.
- * This parameter is a timeout counter, that counts in 64 t_clk
- * chunks ; that when timeout event occurs a maskable interrupt
- * occurs.
- * The parameter is calculated using the t_cLK frequency of the
- * MV-643xx chip and the required delay in the interrupt in uSec
- *
- * INPUT:
- * struct mv643xx_private *mp Ethernet port
- * unsigned int delay Delay in uSeconds
- *
- * OUTPUT:
- * Interrupt coalescing mechanism value is set in MV-643xx chip.
- *
- * RETURN:
- * The interrupt coalescing value set in the gigE port.
+/**
+ * mv643xx_eth_start_xmit - queue an skb to the hardware for transmission
*
*/
-static unsigned int eth_port_set_tx_coal(struct mv643xx_private *mp,
- unsigned int delay)
+static int mv643xx_eth_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
- unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64;
+ struct mv643xx_private *mp = netdev_priv(dev);
+ struct net_device_stats *stats = &dev->stats;
+ unsigned long flags;
- /* Set TX Coalescing mechanism */
- wrl(mp, TX_FIFO_URGENT_THRESHOLD_REG(mp->port_num), coal << 4);
+ BUG_ON(netif_queue_stopped(dev));
- return coal;
+ if (has_tiny_unaligned_frags(skb) && __skb_linearize(skb)) {
+ stats->tx_dropped++;
+ printk(KERN_DEBUG "%s: failed to linearize tiny "
+ "unaligned fragment\n", dev->name);
+ return NETDEV_TX_BUSY;
+ }
+
+ spin_lock_irqsave(&mp->lock, flags);
+
+ if (mp->tx_ring_size - mp->tx_desc_count < MAX_DESCS_PER_SKB) {
+ printk(KERN_ERR "%s: transmit with queue full\n", dev->name);
+ netif_stop_queue(dev);
+ spin_unlock_irqrestore(&mp->lock, flags);
+ return NETDEV_TX_BUSY;
+ }
+
+ eth_tx_submit_descs_for_skb(mp, skb);
+ stats->tx_bytes += skb->len;
+ stats->tx_packets++;
+ dev->trans_start = jiffies;
+
+ if (mp->tx_ring_size - mp->tx_desc_count < MAX_DESCS_PER_SKB)
+ netif_stop_queue(dev);
+
+ spin_unlock_irqrestore(&mp->lock, flags);
+
+ return NETDEV_TX_OK;
}
+
+/* mii management interface *************************************************/
+static int ethernet_phy_get(struct mv643xx_private *mp);
+
/*
- * ether_init_rx_desc_ring - Curve a Rx chain desc list and buffer in memory.
+ * eth_port_read_smi_reg - Read PHY registers
*
* DESCRIPTION:
- * This function prepares a Rx chained list of descriptors and packet
- * buffers in a form of a ring. The routine must be called after port
- * initialization routine and before port start routine.
- * The Ethernet SDMA engine uses CPU bus addresses to access the various
- * devices in the system (i.e. DRAM). This function uses the ethernet
- * struct 'virtual to physical' routine (set by the user) to set the ring
- * with physical addresses.
+ * This routine utilize the SMI interface to interact with the PHY in
+ * order to perform PHY register read.
*
* INPUT:
- * struct mv643xx_private *mp Ethernet Port Control srtuct.
+ * struct mv643xx_private *mp Ethernet Port.
+ * unsigned int phy_reg PHY register address offset.
+ * unsigned int *value Register value buffer.
*
* OUTPUT:
- * The routine updates the Ethernet port control struct with information
- * regarding the Rx descriptors and buffers.
+ * Write the value of a specified PHY register into given buffer.
*
* RETURN:
- * None.
+ * false if the PHY is busy or read data is not in valid state.
+ * true otherwise.
+ *
*/
-static void ether_init_rx_desc_ring(struct mv643xx_private *mp)
+static void eth_port_read_smi_reg(struct mv643xx_private *mp,
+ unsigned int phy_reg, unsigned int *value)
{
- volatile struct eth_rx_desc *p_rx_desc;
- int rx_desc_num = mp->rx_ring_size;
+ void __iomem *smi_reg = mp->shared_smi->eth_base + SMI_REG;
+ int phy_addr = ethernet_phy_get(mp);
+ unsigned long flags;
int i;
- /* initialize the next_desc_ptr links in the Rx descriptors ring */
- p_rx_desc = (struct eth_rx_desc *)mp->p_rx_desc_area;
- for (i = 0; i < rx_desc_num; i++) {
- p_rx_desc[i].next_desc_ptr = mp->rx_desc_dma +
- ((i + 1) % rx_desc_num) * sizeof(struct eth_rx_desc);
+ /* the SMI register is a shared resource */
+ spin_lock_irqsave(&mp->shared_smi->phy_lock, flags);
+
+ /* wait for the SMI register to become available */
+ for (i = 0; readl(smi_reg) & ETH_SMI_BUSY; i++) {
+ if (i == PHY_WAIT_ITERATIONS) {
+ printk("%s: PHY busy timeout\n", mp->dev->name);
+ goto out;
+ }
+ udelay(PHY_WAIT_MICRO_SECONDS);
}
- /* Save Rx desc pointer to driver struct. */
- mp->rx_curr_desc_q = 0;
- mp->rx_used_desc_q = 0;
+ writel((phy_addr << 16) | (phy_reg << 21) | ETH_SMI_OPCODE_READ,
+ smi_reg);
- mp->rx_desc_area_size = rx_desc_num * sizeof(struct eth_rx_desc);
+ /* now wait for the data to be valid */
+ for (i = 0; !(readl(smi_reg) & ETH_SMI_READ_VALID); i++) {
+ if (i == PHY_WAIT_ITERATIONS) {
+ printk("%s: PHY read timeout\n", mp->dev->name);
+ goto out;
+ }
+ udelay(PHY_WAIT_MICRO_SECONDS);
+ }
+
+ *value = readl(smi_reg) & 0xffff;
+out:
+ spin_unlock_irqrestore(&mp->shared_smi->phy_lock, flags);
}
/*
- * ether_init_tx_desc_ring - Curve a Tx chain desc list and buffer in memory.
+ * eth_port_write_smi_reg - Write to PHY registers
*
* DESCRIPTION:
- * This function prepares a Tx chained list of descriptors and packet
- * buffers in a form of a ring. The routine must be called after port
- * initialization routine and before port start routine.
- * The Ethernet SDMA engine uses CPU bus addresses to access the various
- * devices in the system (i.e. DRAM). This function uses the ethernet
- * struct 'virtual to physical' routine (set by the user) to set the ring
- * with physical addresses.
+ * This routine utilize the SMI interface to interact with the PHY in
+ * order to perform writes to PHY registers.
*
* INPUT:
- * struct mv643xx_private *mp Ethernet Port Control srtuct.
+ * struct mv643xx_private *mp Ethernet Port.
+ * unsigned int phy_reg PHY register address offset.
+ * unsigned int value Register value.
*
* OUTPUT:
- * The routine updates the Ethernet port control struct with information
- * regarding the Tx descriptors and buffers.
+ * Write the given value to the specified PHY register.
*
* RETURN:
- * None.
+ * false if the PHY is busy.
+ * true otherwise.
+ *
*/
-static void ether_init_tx_desc_ring(struct mv643xx_private *mp)
+static void eth_port_write_smi_reg(struct mv643xx_private *mp,
+ unsigned int phy_reg, unsigned int value)
{
- int tx_desc_num = mp->tx_ring_size;
- struct eth_tx_desc *p_tx_desc;
+ void __iomem *smi_reg = mp->shared_smi->eth_base + SMI_REG;
+ int phy_addr = ethernet_phy_get(mp);
+ unsigned long flags;
int i;
- /* Initialize the next_desc_ptr links in the Tx descriptors ring */
- p_tx_desc = (struct eth_tx_desc *)mp->p_tx_desc_area;
- for (i = 0; i < tx_desc_num; i++) {
- p_tx_desc[i].next_desc_ptr = mp->tx_desc_dma +
- ((i + 1) % tx_desc_num) * sizeof(struct eth_tx_desc);
+ /* the SMI register is a shared resource */
+ spin_lock_irqsave(&mp->shared_smi->phy_lock, flags);
+
+ /* wait for the SMI register to become available */
+ for (i = 0; readl(smi_reg) & ETH_SMI_BUSY; i++) {
+ if (i == PHY_WAIT_ITERATIONS) {
+ printk("%s: PHY busy timeout\n", mp->dev->name);
+ goto out;
+ }
+ udelay(PHY_WAIT_MICRO_SECONDS);
}
- mp->tx_curr_desc_q = 0;
- mp->tx_used_desc_q = 0;
+ writel((phy_addr << 16) | (phy_reg << 21) |
+ ETH_SMI_OPCODE_WRITE | (value & 0xffff), smi_reg);
+out:
+ spin_unlock_irqrestore(&mp->shared_smi->phy_lock, flags);
+}
- mp->tx_desc_area_size = tx_desc_num * sizeof(struct eth_tx_desc);
+
+/* mib counters *************************************************************/
+/*
+ * eth_clear_mib_counters - Clear all MIB counters
+ *
+ * DESCRIPTION:
+ * This function clears all MIB counters of a specific ethernet port.
+ * A read from the MIB counter will reset the counter.
+ *
+ * INPUT:
+ * struct mv643xx_private *mp Ethernet Port.
+ *
+ * OUTPUT:
+ * After reading all MIB counters, the counters resets.
+ *
+ * RETURN:
+ * MIB counter value.
+ *
+ */
+static void eth_clear_mib_counters(struct mv643xx_private *mp)
+{
+ unsigned int port_num = mp->port_num;
+ int i;
+
+ /* Perform dummy reads from MIB counters */
+ for (i = ETH_MIB_GOOD_OCTETS_RECEIVED_LOW; i < ETH_MIB_LATE_COLLISION;
+ i += 4)
+ rdl(mp, MIB_COUNTERS_BASE(port_num) + i);
}
-static int mv643xx_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+static inline u32 read_mib(struct mv643xx_private *mp, int offset)
{
- struct mv643xx_private *mp = netdev_priv(dev);
- int err;
+ return rdl(mp, MIB_COUNTERS_BASE(mp->port_num) + offset);
+}
- spin_lock_irq(&mp->lock);
- err = mii_ethtool_sset(&mp->mii, cmd);
- spin_unlock_irq(&mp->lock);
+static void eth_update_mib_counters(struct mv643xx_private *mp)
+{
+ struct mv643xx_mib_counters *p = &mp->mib_counters;
+ int offset;
- return err;
+ p->good_octets_received +=
+ read_mib(mp, ETH_MIB_GOOD_OCTETS_RECEIVED_LOW);
+ p->good_octets_received +=
+ (u64)read_mib(mp, ETH_MIB_GOOD_OCTETS_RECEIVED_HIGH) << 32;
+
+ for (offset = ETH_MIB_BAD_OCTETS_RECEIVED;
+ offset <= ETH_MIB_FRAMES_1024_TO_MAX_OCTETS;
+ offset += 4)
+ *(u32 *)((char *)p + offset) += read_mib(mp, offset);
+
+ p->good_octets_sent += read_mib(mp, ETH_MIB_GOOD_OCTETS_SENT_LOW);
+ p->good_octets_sent +=
+ (u64)read_mib(mp, ETH_MIB_GOOD_OCTETS_SENT_HIGH) << 32;
+
+ for (offset = ETH_MIB_GOOD_FRAMES_SENT;
+ offset <= ETH_MIB_LATE_COLLISION;
+ offset += 4)
+ *(u32 *)((char *)p + offset) += read_mib(mp, offset);
}
+
+/* ethtool ******************************************************************/
+struct mv643xx_stats {
+ char stat_string[ETH_GSTRING_LEN];
+ int sizeof_stat;
+ int stat_offset;
+};
+
+#define MV643XX_STAT(m) FIELD_SIZEOF(struct mv643xx_private, m), \
+ offsetof(struct mv643xx_private, m)
+
+static const struct mv643xx_stats mv643xx_gstrings_stats[] = {
+ { "rx_packets", MV643XX_STAT(stats.rx_packets) },
+ { "tx_packets", MV643XX_STAT(stats.tx_packets) },
+ { "rx_bytes", MV643XX_STAT(stats.rx_bytes) },
+ { "tx_bytes", MV643XX_STAT(stats.tx_bytes) },
+ { "rx_errors", MV643XX_STAT(stats.rx_errors) },
+ { "tx_errors", MV643XX_STAT(stats.tx_errors) },
+ { "rx_dropped", MV643XX_STAT(stats.rx_dropped) },
+ { "tx_dropped", MV643XX_STAT(stats.tx_dropped) },
+ { "good_octets_received", MV643XX_STAT(mib_counters.good_octets_received) },
+ { "bad_octets_received", MV643XX_STAT(mib_counters.bad_octets_received) },
+ { "internal_mac_transmit_err", MV643XX_STAT(mib_counters.internal_mac_transmit_err) },
+ { "good_frames_received", MV643XX_STAT(mib_counters.good_frames_received) },
+ { "bad_frames_received", MV643XX_STAT(mib_counters.bad_frames_received) },
+ { "broadcast_frames_received", MV643XX_STAT(mib_counters.broadcast_frames_received) },
+ { "multicast_frames_received", MV643XX_STAT(mib_counters.multicast_frames_received) },
+ { "frames_64_octets", MV643XX_STAT(mib_counters.frames_64_octets) },
+ { "frames_65_to_127_octets", MV643XX_STAT(mib_counters.frames_65_to_127_octets) },
+ { "frames_128_to_255_octets", MV643XX_STAT(mib_counters.frames_128_to_255_octets) },
+ { "frames_256_to_511_octets", MV643XX_STAT(mib_counters.frames_256_to_511_octets) },
+ { "frames_512_to_1023_octets", MV643XX_STAT(mib_counters.frames_512_to_1023_octets) },
+ { "frames_1024_to_max_octets", MV643XX_STAT(mib_counters.frames_1024_to_max_octets) },
+ { "good_octets_sent", MV643XX_STAT(mib_counters.good_octets_sent) },
+ { "good_frames_sent", MV643XX_STAT(mib_counters.good_frames_sent) },
+ { "excessive_collision", MV643XX_STAT(mib_counters.excessive_collision) },
+ { "multicast_frames_sent", MV643XX_STAT(mib_counters.multicast_frames_sent) },
+ { "broadcast_frames_sent", MV643XX_STAT(mib_counters.broadcast_frames_sent) },
+ { "unrec_mac_control_received", MV643XX_STAT(mib_counters.unrec_mac_control_received) },
+ { "fc_sent", MV643XX_STAT(mib_counters.fc_sent) },
+ { "good_fc_received", MV643XX_STAT(mib_counters.good_fc_received) },
+ { "bad_fc_received", MV643XX_STAT(mib_counters.bad_fc_received) },
+ { "undersize_received", MV643XX_STAT(mib_counters.undersize_received) },
+ { "fragments_received", MV643XX_STAT(mib_counters.fragments_received) },
+ { "oversize_received", MV643XX_STAT(mib_counters.oversize_received) },
+ { "jabber_received", MV643XX_STAT(mib_counters.jabber_received) },
+ { "mac_receive_error", MV643XX_STAT(mib_counters.mac_receive_error) },
+ { "bad_crc_event", MV643XX_STAT(mib_counters.bad_crc_event) },
+ { "collision", MV643XX_STAT(mib_counters.collision) },
+ { "late_collision", MV643XX_STAT(mib_counters.late_collision) },
+};
+
+#define MV643XX_STATS_LEN ARRAY_SIZE(mv643xx_gstrings_stats)
+
static int mv643xx_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
struct mv643xx_private *mp = netdev_priv(dev);
return err;
}
-/*
- * mv643xx_eth_open
- *
- * This function is called when openning the network device. The function
- * should initialize all the hardware, initialize cyclic Rx/Tx
- * descriptors chain and buffers and allocate an IRQ to the network
- * device.
- *
- * Input : a pointer to the network device structure
- *
- * Output : zero of success , nonzero if fails.
- */
-
-static int mv643xx_eth_open(struct net_device *dev)
+static int mv643xx_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
struct mv643xx_private *mp = netdev_priv(dev);
- unsigned int port_num = mp->port_num;
- unsigned int size;
int err;
- /* Clear any pending ethernet port interrupts */
- wrl(mp, INTERRUPT_CAUSE_REG(port_num), 0);
- wrl(mp, INTERRUPT_CAUSE_EXTEND_REG(port_num), 0);
- /* wait for previous write to complete */
- rdl(mp, INTERRUPT_CAUSE_EXTEND_REG(port_num));
+ spin_lock_irq(&mp->lock);
+ err = mii_ethtool_sset(&mp->mii, cmd);
+ spin_unlock_irq(&mp->lock);
- err = request_irq(dev->irq, mv643xx_eth_int_handler,
- IRQF_SHARED | IRQF_SAMPLE_RANDOM, dev->name, dev);
- if (err) {
- printk(KERN_ERR "%s: Can not assign IRQ\n", dev->name);
- return -EAGAIN;
- }
+ return err;
+}
- eth_port_init(mp);
+static void mv643xx_get_drvinfo(struct net_device *netdev,
+ struct ethtool_drvinfo *drvinfo)
+{
+ strncpy(drvinfo->driver, mv643xx_driver_name, 32);
+ strncpy(drvinfo->version, mv643xx_driver_version, 32);
+ strncpy(drvinfo->fw_version, "N/A", 32);
+ strncpy(drvinfo->bus_info, "mv643xx", 32);
+ drvinfo->n_stats = MV643XX_STATS_LEN;
+}
- memset(&mp->timeout, 0, sizeof(struct timer_list));
- mp->timeout.function = mv643xx_eth_rx_refill_descs_timer_wrapper;
- mp->timeout.data = (unsigned long)dev;
+static int mv643xx_eth_nway_restart(struct net_device *dev)
+{
+ struct mv643xx_private *mp = netdev_priv(dev);
- /* Allocate RX and TX skb rings */
- mp->rx_skb = kmalloc(sizeof(*mp->rx_skb) * mp->rx_ring_size,
- GFP_KERNEL);
- if (!mp->rx_skb) {
- printk(KERN_ERR "%s: Cannot allocate Rx skb ring\n", dev->name);
- err = -ENOMEM;
- goto out_free_irq;
- }
- mp->tx_skb = kmalloc(sizeof(*mp->tx_skb) * mp->tx_ring_size,
- GFP_KERNEL);
- if (!mp->tx_skb) {
- printk(KERN_ERR "%s: Cannot allocate Tx skb ring\n", dev->name);
- err = -ENOMEM;
- goto out_free_rx_skb;
- }
+ return mii_nway_restart(&mp->mii);
+}
- /* Allocate TX ring */
- mp->tx_desc_count = 0;
- size = mp->tx_ring_size * sizeof(struct eth_tx_desc);
- mp->tx_desc_area_size = size;
+static u32 mv643xx_eth_get_link(struct net_device *dev)
+{
+ struct mv643xx_private *mp = netdev_priv(dev);
- if (mp->tx_sram_size) {
- mp->p_tx_desc_area = ioremap(mp->tx_sram_addr,
- mp->tx_sram_size);
- mp->tx_desc_dma = mp->tx_sram_addr;
- } else
- mp->p_tx_desc_area = dma_alloc_coherent(NULL, size,
- &mp->tx_desc_dma,
- GFP_KERNEL);
+ return mii_link_ok(&mp->mii);
+}
- if (!mp->p_tx_desc_area) {
- printk(KERN_ERR "%s: Cannot allocate Tx Ring (size %d bytes)\n",
- dev->name, size);
- err = -ENOMEM;
- goto out_free_tx_skb;
- }
- BUG_ON((u32) mp->p_tx_desc_area & 0xf); /* check 16-byte alignment */
- memset((void *)mp->p_tx_desc_area, 0, mp->tx_desc_area_size);
+static void mv643xx_get_strings(struct net_device *netdev, uint32_t stringset,
+ uint8_t *data)
+{
+ int i;
- ether_init_tx_desc_ring(mp);
+ switch(stringset) {
+ case ETH_SS_STATS:
+ for (i=0; i < MV643XX_STATS_LEN; i++) {
+ memcpy(data + i * ETH_GSTRING_LEN,
+ mv643xx_gstrings_stats[i].stat_string,
+ ETH_GSTRING_LEN);
+ }
+ break;
+ }
+}
- /* Allocate RX ring */
- mp->rx_desc_count = 0;
- size = mp->rx_ring_size * sizeof(struct eth_rx_desc);
- mp->rx_desc_area_size = size;
+static void mv643xx_get_ethtool_stats(struct net_device *netdev,
+ struct ethtool_stats *stats, uint64_t *data)
+{
+ struct mv643xx_private *mp = netdev->priv;
+ int i;
- if (mp->rx_sram_size) {
- mp->p_rx_desc_area = ioremap(mp->rx_sram_addr,
- mp->rx_sram_size);
- mp->rx_desc_dma = mp->rx_sram_addr;
- } else
- mp->p_rx_desc_area = dma_alloc_coherent(NULL, size,
- &mp->rx_desc_dma,
- GFP_KERNEL);
+ eth_update_mib_counters(mp);
- if (!mp->p_rx_desc_area) {
- printk(KERN_ERR "%s: Cannot allocate Rx ring (size %d bytes)\n",
- dev->name, size);
- printk(KERN_ERR "%s: Freeing previously allocated TX queues...",
- dev->name);
- if (mp->rx_sram_size)
- iounmap(mp->p_tx_desc_area);
- else
- dma_free_coherent(NULL, mp->tx_desc_area_size,
- mp->p_tx_desc_area, mp->tx_desc_dma);
- err = -ENOMEM;
- goto out_free_tx_skb;
+ for (i = 0; i < MV643XX_STATS_LEN; i++) {
+ char *p = (char *)mp+mv643xx_gstrings_stats[i].stat_offset;
+ data[i] = (mv643xx_gstrings_stats[i].sizeof_stat ==
+ sizeof(uint64_t)) ? *(uint64_t *)p : *(uint32_t *)p;
}
- memset((void *)mp->p_rx_desc_area, 0, size);
+}
- ether_init_rx_desc_ring(mp);
+static int mv643xx_get_sset_count(struct net_device *netdev, int sset)
+{
+ switch (sset) {
+ case ETH_SS_STATS:
+ return MV643XX_STATS_LEN;
+ default:
+ return -EOPNOTSUPP;
+ }
+}
- mv643xx_eth_rx_refill_descs(dev); /* Fill RX ring with skb's */
+static const struct ethtool_ops mv643xx_ethtool_ops = {
+ .get_settings = mv643xx_get_settings,
+ .set_settings = mv643xx_set_settings,
+ .get_drvinfo = mv643xx_get_drvinfo,
+ .get_link = mv643xx_eth_get_link,
+ .set_sg = ethtool_op_set_sg,
+ .get_sset_count = mv643xx_get_sset_count,
+ .get_ethtool_stats = mv643xx_get_ethtool_stats,
+ .get_strings = mv643xx_get_strings,
+ .nway_reset = mv643xx_eth_nway_restart,
+};
-#ifdef MV643XX_NAPI
- napi_enable(&mp->napi);
-#endif
- eth_port_start(dev);
+/* address handling *********************************************************/
+/*
+ * eth_port_uc_addr_get - Read the MAC address from the port's hw registers
+ */
+static void eth_port_uc_addr_get(struct mv643xx_private *mp,
+ unsigned char *p_addr)
+{
+ unsigned int port_num = mp->port_num;
+ unsigned int mac_h;
+ unsigned int mac_l;
- /* Interrupt Coalescing */
+ mac_h = rdl(mp, MAC_ADDR_HIGH(port_num));
+ mac_l = rdl(mp, MAC_ADDR_LOW(port_num));
-#ifdef MV643XX_COAL
- mp->rx_int_coal =
- eth_port_set_rx_coal(mp, MV643XX_RX_COAL);
-#endif
+ p_addr[0] = (mac_h >> 24) & 0xff;
+ p_addr[1] = (mac_h >> 16) & 0xff;
+ p_addr[2] = (mac_h >> 8) & 0xff;
+ p_addr[3] = mac_h & 0xff;
+ p_addr[4] = (mac_l >> 8) & 0xff;
+ p_addr[5] = mac_l & 0xff;
+}
- mp->tx_int_coal =
- eth_port_set_tx_coal(mp, MV643XX_TX_COAL);
+/*
+ * eth_port_init_mac_tables - Clear all entrance in the UC, SMC and OMC tables
+ *
+ * DESCRIPTION:
+ * Go through all the DA filter tables (Unicast, Special Multicast &
+ * Other Multicast) and set each entry to 0.
+ *
+ * INPUT:
+ * struct mv643xx_private *mp Ethernet Port.
+ *
+ * OUTPUT:
+ * Multicast and Unicast packets are rejected.
+ *
+ * RETURN:
+ * None.
+ */
+static void eth_port_init_mac_tables(struct mv643xx_private *mp)
+{
+ unsigned int port_num = mp->port_num;
+ int table_index;
- /* Unmask phy and link status changes interrupts */
- wrl(mp, INTERRUPT_EXTEND_MASK_REG(port_num), ETH_INT_UNMASK_ALL_EXT);
+ /* Clear DA filter unicast table (Ex_dFUT) */
+ for (table_index = 0; table_index <= 0xC; table_index += 4)
+ wrl(mp, DA_FILTER_UNICAST_TABLE_BASE(port_num) +
+ table_index, 0);
- /* Unmask RX buffer and TX end interrupt */
- wrl(mp, INTERRUPT_MASK_REG(port_num), ETH_INT_UNMASK_ALL);
+ for (table_index = 0; table_index <= 0xFC; table_index += 4) {
+ /* Clear DA filter special multicast table (Ex_dFSMT) */
+ wrl(mp, DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE(port_num) +
+ table_index, 0);
+ /* Clear DA filter other multicast table (Ex_dFOMT) */
+ wrl(mp, DA_FILTER_OTHER_MULTICAST_TABLE_BASE(port_num) +
+ table_index, 0);
+ }
+}
- return 0;
+/*
+ * The entries in each table are indexed by a hash of a packet's MAC
+ * address. One bit in each entry determines whether the packet is
+ * accepted. There are 4 entries (each 8 bits wide) in each register
+ * of the table. The bits in each entry are defined as follows:
+ * 0 Accept=1, Drop=0
+ * 3-1 Queue (ETH_Q0=0)
+ * 7-4 Reserved = 0;
+ */
+static void eth_port_set_filter_table_entry(struct mv643xx_private *mp,
+ int table, unsigned char entry)
+{
+ unsigned int table_reg;
+ unsigned int tbl_offset;
+ unsigned int reg_offset;
-out_free_tx_skb:
- kfree(mp->tx_skb);
-out_free_rx_skb:
- kfree(mp->rx_skb);
-out_free_irq:
- free_irq(dev->irq, dev);
+ tbl_offset = (entry / 4) * 4; /* Register offset of DA table entry */
+ reg_offset = entry % 4; /* Entry offset within the register */
- return err;
+ /* Set "accepts frame bit" at specified table entry */
+ table_reg = rdl(mp, table + tbl_offset);
+ table_reg |= 0x01 << (8 * reg_offset);
+ wrl(mp, table + tbl_offset, table_reg);
}
-static void mv643xx_eth_free_tx_rings(struct net_device *dev)
+/*
+ * eth_port_uc_addr_set - Write a MAC address into the port's hw registers
+ */
+static void eth_port_uc_addr_set(struct mv643xx_private *mp,
+ unsigned char *p_addr)
{
- struct mv643xx_private *mp = netdev_priv(dev);
-
- /* Stop Tx Queues */
- mv643xx_eth_port_disable_tx(mp);
+ unsigned int port_num = mp->port_num;
+ unsigned int mac_h;
+ unsigned int mac_l;
+ int table;
- /* Free outstanding skb's on TX ring */
- mv643xx_eth_free_all_tx_descs(dev);
+ mac_l = (p_addr[4] << 8) | (p_addr[5]);
+ mac_h = (p_addr[0] << 24) | (p_addr[1] << 16) | (p_addr[2] << 8) |
+ (p_addr[3] << 0);
- BUG_ON(mp->tx_used_desc_q != mp->tx_curr_desc_q);
+ wrl(mp, MAC_ADDR_LOW(port_num), mac_l);
+ wrl(mp, MAC_ADDR_HIGH(port_num), mac_h);
- /* Free TX ring */
- if (mp->tx_sram_size)
- iounmap(mp->p_tx_desc_area);
- else
- dma_free_coherent(NULL, mp->tx_desc_area_size,
- mp->p_tx_desc_area, mp->tx_desc_dma);
+ /* Accept frames with this address */
+ table = DA_FILTER_UNICAST_TABLE_BASE(port_num);
+ eth_port_set_filter_table_entry(mp, table, p_addr[5] & 0x0f);
}
-static void mv643xx_eth_free_rx_rings(struct net_device *dev)
+/*
+ * mv643xx_eth_update_mac_address
+ *
+ * Update the MAC address of the port in the address table
+ *
+ * Input : pointer to ethernet interface network device structure
+ * Output : N/A
+ */
+static void mv643xx_eth_update_mac_address(struct net_device *dev)
{
struct mv643xx_private *mp = netdev_priv(dev);
- int curr;
-
- /* Stop RX Queues */
- mv643xx_eth_port_disable_rx(mp);
- /* Free preallocated skb's on RX rings */
- for (curr = 0; mp->rx_desc_count && curr < mp->rx_ring_size; curr++) {
- if (mp->rx_skb[curr]) {
- dev_kfree_skb(mp->rx_skb[curr]);
- mp->rx_desc_count--;
- }
- }
-
- if (mp->rx_desc_count)
- printk(KERN_ERR
- "%s: Error in freeing Rx Ring. %d skb's still"
- " stuck in RX Ring - ignoring them\n", dev->name,
- mp->rx_desc_count);
- /* Free RX ring */
- if (mp->rx_sram_size)
- iounmap(mp->p_rx_desc_area);
- else
- dma_free_coherent(NULL, mp->rx_desc_area_size,
- mp->p_rx_desc_area, mp->rx_desc_dma);
-}
+ eth_port_init_mac_tables(mp);
+ eth_port_uc_addr_set(mp, dev->dev_addr);
+}
/*
- * mv643xx_eth_stop
+ * mv643xx_eth_set_mac_address
*
- * This function is used when closing the network device.
- * It updates the hardware,
- * release all memory that holds buffers and descriptors and release the IRQ.
- * Input : a pointer to the device structure
- * Output : zero if success , nonzero if fails
+ * Change the interface's mac address.
+ * No special hardware thing should be done because interface is always
+ * put in promiscuous mode.
+ *
+ * Input : pointer to ethernet interface network device structure and
+ * a pointer to the designated entry to be added to the cache.
+ * Output : zero upon success, negative upon failure
*/
-
-static int mv643xx_eth_stop(struct net_device *dev)
+static int mv643xx_eth_set_mac_address(struct net_device *dev, void *addr)
{
- struct mv643xx_private *mp = netdev_priv(dev);
- unsigned int port_num = mp->port_num;
-
- /* Mask all interrupts on ethernet port */
- wrl(mp, INTERRUPT_MASK_REG(port_num), ETH_INT_MASK_ALL);
- /* wait for previous write to complete */
- rdl(mp, INTERRUPT_MASK_REG(port_num));
-
-#ifdef MV643XX_NAPI
- napi_disable(&mp->napi);
-#endif
- netif_carrier_off(dev);
- netif_stop_queue(dev);
-
- eth_port_reset(mp);
-
- mv643xx_eth_free_tx_rings(dev);
- mv643xx_eth_free_rx_rings(dev);
-
- free_irq(dev->irq, dev);
+ int i;
+ for (i = 0; i < 6; i++)
+ /* +2 is for the offset of the HW addr type */
+ dev->dev_addr[i] = ((unsigned char *)addr)[i + 2];
+ mv643xx_eth_update_mac_address(dev);
return 0;
}
-#ifdef MV643XX_NAPI
/*
- * mv643xx_poll
+ * eth_port_mc_addr - Multicast address settings.
*
- * This function is used in case of NAPI
+ * The MV device supports multicast using two tables:
+ * 1) Special Multicast Table for MAC addresses of the form
+ * 0x01-00-5E-00-00-XX (where XX is between 0x00 and 0x_FF).
+ * The MAC DA[7:0] bits are used as a pointer to the Special Multicast
+ * Table entries in the DA-Filter table.
+ * 2) Other Multicast Table for multicast of another type. A CRC-8bit
+ * is used as an index to the Other Multicast Table entries in the
+ * DA-Filter table. This function calculates the CRC-8bit value.
+ * In either case, eth_port_set_filter_table_entry() is then called
+ * to set to set the actual table entry.
*/
-static int mv643xx_poll(struct napi_struct *napi, int budget)
+static void eth_port_mc_addr(struct mv643xx_private *mp, unsigned char *p_addr)
{
- struct mv643xx_private *mp = container_of(napi, struct mv643xx_private, napi);
- struct net_device *dev = mp->dev;
unsigned int port_num = mp->port_num;
- int work_done;
+ unsigned int mac_h;
+ unsigned int mac_l;
+ unsigned char crc_result = 0;
+ int table;
+ int mac_array[48];
+ int crc[8];
+ int i;
-#ifdef MV643XX_TX_FAST_REFILL
- if (++mp->tx_clean_threshold > 5) {
- mv643xx_eth_free_completed_tx_descs(dev);
- mp->tx_clean_threshold = 0;
+ if ((p_addr[0] == 0x01) && (p_addr[1] == 0x00) &&
+ (p_addr[2] == 0x5E) && (p_addr[3] == 0x00) && (p_addr[4] == 0x00)) {
+ table = DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE(port_num);
+ eth_port_set_filter_table_entry(mp, table, p_addr[5]);
+ return;
}
-#endif
- work_done = 0;
- if ((rdl(mp, RX_CURRENT_QUEUE_DESC_PTR_0(port_num)))
- != (u32) mp->rx_used_desc_q)
- work_done = mv643xx_eth_receive_queue(dev, budget);
+ /* Calculate CRC-8 out of the given address */
+ mac_h = (p_addr[0] << 8) | (p_addr[1]);
+ mac_l = (p_addr[2] << 24) | (p_addr[3] << 16) |
+ (p_addr[4] << 8) | (p_addr[5] << 0);
- if (work_done < budget) {
- netif_rx_complete(dev, napi);
- wrl(mp, INTERRUPT_CAUSE_REG(port_num), 0);
- wrl(mp, INTERRUPT_CAUSE_EXTEND_REG(port_num), 0);
- wrl(mp, INTERRUPT_MASK_REG(port_num), ETH_INT_UNMASK_ALL);
- }
+ for (i = 0; i < 32; i++)
+ mac_array[i] = (mac_l >> i) & 0x1;
+ for (i = 32; i < 48; i++)
+ mac_array[i] = (mac_h >> (i - 32)) & 0x1;
- return work_done;
-}
-#endif
+ crc[0] = mac_array[45] ^ mac_array[43] ^ mac_array[40] ^ mac_array[39] ^
+ mac_array[35] ^ mac_array[34] ^ mac_array[31] ^ mac_array[30] ^
+ mac_array[28] ^ mac_array[23] ^ mac_array[21] ^ mac_array[19] ^
+ mac_array[18] ^ mac_array[16] ^ mac_array[14] ^ mac_array[12] ^
+ mac_array[8] ^ mac_array[7] ^ mac_array[6] ^ mac_array[0];
-/**
- * has_tiny_unaligned_frags - check if skb has any small, unaligned fragments
- *
- * Hardware can't handle unaligned fragments smaller than 9 bytes.
- * This helper function detects that case.
- */
+ crc[1] = mac_array[46] ^ mac_array[45] ^ mac_array[44] ^ mac_array[43] ^
+ mac_array[41] ^ mac_array[39] ^ mac_array[36] ^ mac_array[34] ^
+ mac_array[32] ^ mac_array[30] ^ mac_array[29] ^ mac_array[28] ^
+ mac_array[24] ^ mac_array[23] ^ mac_array[22] ^ mac_array[21] ^
+ mac_array[20] ^ mac_array[18] ^ mac_array[17] ^ mac_array[16] ^
+ mac_array[15] ^ mac_array[14] ^ mac_array[13] ^ mac_array[12] ^
+ mac_array[9] ^ mac_array[6] ^ mac_array[1] ^ mac_array[0];
-static inline unsigned int has_tiny_unaligned_frags(struct sk_buff *skb)
-{
- unsigned int frag;
- skb_frag_t *fragp;
+ crc[2] = mac_array[47] ^ mac_array[46] ^ mac_array[44] ^ mac_array[43] ^
+ mac_array[42] ^ mac_array[39] ^ mac_array[37] ^ mac_array[34] ^
+ mac_array[33] ^ mac_array[29] ^ mac_array[28] ^ mac_array[25] ^
+ mac_array[24] ^ mac_array[22] ^ mac_array[17] ^ mac_array[15] ^
+ mac_array[13] ^ mac_array[12] ^ mac_array[10] ^ mac_array[8] ^
+ mac_array[6] ^ mac_array[2] ^ mac_array[1] ^ mac_array[0];
- for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
- fragp = &skb_shinfo(skb)->frags[frag];
- if (fragp->size <= 8 && fragp->page_offset & 0x7)
- return 1;
- }
- return 0;
-}
+ crc[3] = mac_array[47] ^ mac_array[45] ^ mac_array[44] ^ mac_array[43] ^
+ mac_array[40] ^ mac_array[38] ^ mac_array[35] ^ mac_array[34] ^
+ mac_array[30] ^ mac_array[29] ^ mac_array[26] ^ mac_array[25] ^
+ mac_array[23] ^ mac_array[18] ^ mac_array[16] ^ mac_array[14] ^
+ mac_array[13] ^ mac_array[11] ^ mac_array[9] ^ mac_array[7] ^
+ mac_array[3] ^ mac_array[2] ^ mac_array[1];
-/**
- * eth_alloc_tx_desc_index - return the index of the next available tx desc
- */
-static int eth_alloc_tx_desc_index(struct mv643xx_private *mp)
-{
- int tx_desc_curr;
+ crc[4] = mac_array[46] ^ mac_array[45] ^ mac_array[44] ^ mac_array[41] ^
+ mac_array[39] ^ mac_array[36] ^ mac_array[35] ^ mac_array[31] ^
+ mac_array[30] ^ mac_array[27] ^ mac_array[26] ^ mac_array[24] ^
+ mac_array[19] ^ mac_array[17] ^ mac_array[15] ^ mac_array[14] ^
+ mac_array[12] ^ mac_array[10] ^ mac_array[8] ^ mac_array[4] ^
+ mac_array[3] ^ mac_array[2];
- BUG_ON(mp->tx_desc_count >= mp->tx_ring_size);
+ crc[5] = mac_array[47] ^ mac_array[46] ^ mac_array[45] ^ mac_array[42] ^
+ mac_array[40] ^ mac_array[37] ^ mac_array[36] ^ mac_array[32] ^
+ mac_array[31] ^ mac_array[28] ^ mac_array[27] ^ mac_array[25] ^
+ mac_array[20] ^ mac_array[18] ^ mac_array[16] ^ mac_array[15] ^
+ mac_array[13] ^ mac_array[11] ^ mac_array[9] ^ mac_array[5] ^
+ mac_array[4] ^ mac_array[3];
- tx_desc_curr = mp->tx_curr_desc_q;
- mp->tx_curr_desc_q = (tx_desc_curr + 1) % mp->tx_ring_size;
+ crc[6] = mac_array[47] ^ mac_array[46] ^ mac_array[43] ^ mac_array[41] ^
+ mac_array[38] ^ mac_array[37] ^ mac_array[33] ^ mac_array[32] ^
+ mac_array[29] ^ mac_array[28] ^ mac_array[26] ^ mac_array[21] ^
+ mac_array[19] ^ mac_array[17] ^ mac_array[16] ^ mac_array[14] ^
+ mac_array[12] ^ mac_array[10] ^ mac_array[6] ^ mac_array[5] ^
+ mac_array[4];
- BUG_ON(mp->tx_curr_desc_q == mp->tx_used_desc_q);
+ crc[7] = mac_array[47] ^ mac_array[44] ^ mac_array[42] ^ mac_array[39] ^
+ mac_array[38] ^ mac_array[34] ^ mac_array[33] ^ mac_array[30] ^
+ mac_array[29] ^ mac_array[27] ^ mac_array[22] ^ mac_array[20] ^
+ mac_array[18] ^ mac_array[17] ^ mac_array[15] ^ mac_array[13] ^
+ mac_array[11] ^ mac_array[7] ^ mac_array[6] ^ mac_array[5];
- return tx_desc_curr;
+ for (i = 0; i < 8; i++)
+ crc_result = crc_result | (crc[i] << i);
+
+ table = DA_FILTER_OTHER_MULTICAST_TABLE_BASE(port_num);
+ eth_port_set_filter_table_entry(mp, table, crc_result);
}
-/**
- * eth_tx_fill_frag_descs - fill tx hw descriptors for an skb's fragments.
- *
- * Ensure the data for each fragment to be transmitted is mapped properly,
- * then fill in descriptors in the tx hw queue.
+/*
+ * Set the entire multicast list based on dev->mc_list.
*/
-static void eth_tx_fill_frag_descs(struct mv643xx_private *mp,
- struct sk_buff *skb)
+static void eth_port_set_multicast_list(struct net_device *dev)
{
- int frag;
- int tx_index;
- struct eth_tx_desc *desc;
- for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
- skb_frag_t *this_frag = &skb_shinfo(skb)->frags[frag];
+ struct dev_mc_list *mc_list;
+ int i;
+ int table_index;
+ struct mv643xx_private *mp = netdev_priv(dev);
+ unsigned int eth_port_num = mp->port_num;
- tx_index = eth_alloc_tx_desc_index(mp);
- desc = &mp->p_tx_desc_area[tx_index];
+ /* If the device is in promiscuous mode or in all multicast mode,
+ * we will fully populate both multicast tables with accept.
+ * This is guaranteed to yield a match on all multicast addresses...
+ */
+ if ((dev->flags & IFF_PROMISC) || (dev->flags & IFF_ALLMULTI)) {
+ for (table_index = 0; table_index <= 0xFC; table_index += 4) {
+ /* Set all entries in DA filter special multicast
+ * table (Ex_dFSMT)
+ * Set for ETH_Q0 for now
+ * Bits
+ * 0 Accept=1, Drop=0
+ * 3-1 Queue ETH_Q0=0
+ * 7-4 Reserved = 0;
+ */
+ wrl(mp, DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE(eth_port_num) + table_index, 0x01010101);
- desc->cmd_sts = ETH_BUFFER_OWNED_BY_DMA;
- /* Last Frag enables interrupt and frees the skb */
- if (frag == (skb_shinfo(skb)->nr_frags - 1)) {
- desc->cmd_sts |= ETH_ZERO_PADDING |
- ETH_TX_LAST_DESC |
- ETH_TX_ENABLE_INTERRUPT;
- mp->tx_skb[tx_index] = skb;
- } else
- mp->tx_skb[tx_index] = NULL;
+ /* Set all entries in DA filter other multicast
+ * table (Ex_dFOMT)
+ * Set for ETH_Q0 for now
+ * Bits
+ * 0 Accept=1, Drop=0
+ * 3-1 Queue ETH_Q0=0
+ * 7-4 Reserved = 0;
+ */
+ wrl(mp, DA_FILTER_OTHER_MULTICAST_TABLE_BASE(eth_port_num) + table_index, 0x01010101);
+ }
+ return;
+ }
- desc = &mp->p_tx_desc_area[tx_index];
- desc->l4i_chk = 0;
- desc->byte_cnt = this_frag->size;
- desc->buf_ptr = dma_map_page(NULL, this_frag->page,
- this_frag->page_offset,
- this_frag->size,
- DMA_TO_DEVICE);
+ /* We will clear out multicast tables every time we get the list.
+ * Then add the entire new list...
+ */
+ for (table_index = 0; table_index <= 0xFC; table_index += 4) {
+ /* Clear DA filter special multicast table (Ex_dFSMT) */
+ wrl(mp, DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE
+ (eth_port_num) + table_index, 0);
+
+ /* Clear DA filter other multicast table (Ex_dFOMT) */
+ wrl(mp, DA_FILTER_OTHER_MULTICAST_TABLE_BASE
+ (eth_port_num) + table_index, 0);
}
-}
-static inline __be16 sum16_as_be(__sum16 sum)
-{
- return (__force __be16)sum;
+ /* Get pointer to net_device multicast list and add each one... */
+ for (i = 0, mc_list = dev->mc_list;
+ (i < 256) && (mc_list != NULL) && (i < dev->mc_count);
+ i++, mc_list = mc_list->next)
+ if (mc_list->dmi_addrlen == 6)
+ eth_port_mc_addr(mp, mc_list->dmi_addr);
}
-/**
- * eth_tx_submit_descs_for_skb - submit data from an skb to the tx hw
+/*
+ * mv643xx_eth_set_rx_mode
*
- * Ensure the data for an skb to be transmitted is mapped properly,
- * then fill in descriptors in the tx hw queue and start the hardware.
+ * Change from promiscuos to regular rx mode
+ *
+ * Input : pointer to ethernet interface network device structure
+ * Output : N/A
*/
-static void eth_tx_submit_descs_for_skb(struct mv643xx_private *mp,
- struct sk_buff *skb)
+static void mv643xx_eth_set_rx_mode(struct net_device *dev)
{
- int tx_index;
- struct eth_tx_desc *desc;
- u32 cmd_sts;
- int length;
- int nr_frags = skb_shinfo(skb)->nr_frags;
+ struct mv643xx_private *mp = netdev_priv(dev);
+ u32 config_reg;
- cmd_sts = ETH_TX_FIRST_DESC | ETH_GEN_CRC | ETH_BUFFER_OWNED_BY_DMA;
+ config_reg = rdl(mp, PORT_CONFIG_REG(mp->port_num));
+ if (dev->flags & IFF_PROMISC)
+ config_reg |= (u32) UNICAST_PROMISCUOUS_MODE;
+ else
+ config_reg &= ~(u32) UNICAST_PROMISCUOUS_MODE;
+ wrl(mp, PORT_CONFIG_REG(mp->port_num), config_reg);
- tx_index = eth_alloc_tx_desc_index(mp);
- desc = &mp->p_tx_desc_area[tx_index];
+ eth_port_set_multicast_list(dev);
+}
- if (nr_frags) {
- eth_tx_fill_frag_descs(mp, skb);
- length = skb_headlen(skb);
- mp->tx_skb[tx_index] = NULL;
- } else {
- cmd_sts |= ETH_ZERO_PADDING |
- ETH_TX_LAST_DESC |
- ETH_TX_ENABLE_INTERRUPT;
- length = skb->len;
- mp->tx_skb[tx_index] = skb;
+/* rx/tx queue initialisation ***********************************************/
+/*
+ * ether_init_rx_desc_ring - Curve a Rx chain desc list and buffer in memory.
+ *
+ * DESCRIPTION:
+ * This function prepares a Rx chained list of descriptors and packet
+ * buffers in a form of a ring. The routine must be called after port
+ * initialization routine and before port start routine.
+ * The Ethernet SDMA engine uses CPU bus addresses to access the various
+ * devices in the system (i.e. DRAM). This function uses the ethernet
+ * struct 'virtual to physical' routine (set by the user) to set the ring
+ * with physical addresses.
+ *
+ * INPUT:
+ * struct mv643xx_private *mp Ethernet Port Control srtuct.
+ *
+ * OUTPUT:
+ * The routine updates the Ethernet port control struct with information
+ * regarding the Rx descriptors and buffers.
+ *
+ * RETURN:
+ * None.
+ */
+static void ether_init_rx_desc_ring(struct mv643xx_private *mp)
+{
+ volatile struct eth_rx_desc *p_rx_desc;
+ int rx_desc_num = mp->rx_ring_size;
+ int i;
+
+ /* initialize the next_desc_ptr links in the Rx descriptors ring */
+ p_rx_desc = (struct eth_rx_desc *)mp->p_rx_desc_area;
+ for (i = 0; i < rx_desc_num; i++) {
+ p_rx_desc[i].next_desc_ptr = mp->rx_desc_dma +
+ ((i + 1) % rx_desc_num) * sizeof(struct eth_rx_desc);
}
- desc->byte_cnt = length;
- desc->buf_ptr = dma_map_single(NULL, skb->data, length, DMA_TO_DEVICE);
+ /* Save Rx desc pointer to driver struct. */
+ mp->rx_curr_desc_q = 0;
+ mp->rx_used_desc_q = 0;
- if (skb->ip_summed == CHECKSUM_PARTIAL) {
- BUG_ON(skb->protocol != htons(ETH_P_IP));
+ mp->rx_desc_area_size = rx_desc_num * sizeof(struct eth_rx_desc);
+}
- cmd_sts |= ETH_GEN_TCP_UDP_CHECKSUM |
- ETH_GEN_IP_V_4_CHECKSUM |
- ip_hdr(skb)->ihl << ETH_TX_IHL_SHIFT;
+static void mv643xx_eth_free_rx_rings(struct net_device *dev)
+{
+ struct mv643xx_private *mp = netdev_priv(dev);
+ int curr;
- switch (ip_hdr(skb)->protocol) {
- case IPPROTO_UDP:
- cmd_sts |= ETH_UDP_FRAME;
- desc->l4i_chk = ntohs(sum16_as_be(udp_hdr(skb)->check));
- break;
- case IPPROTO_TCP:
- desc->l4i_chk = ntohs(sum16_as_be(tcp_hdr(skb)->check));
- break;
- default:
- BUG();
+ /* Stop RX Queues */
+ mv643xx_eth_port_disable_rx(mp);
+
+ /* Free preallocated skb's on RX rings */
+ for (curr = 0; mp->rx_desc_count && curr < mp->rx_ring_size; curr++) {
+ if (mp->rx_skb[curr]) {
+ dev_kfree_skb(mp->rx_skb[curr]);
+ mp->rx_desc_count--;
}
- } else {
- /* Errata BTS #50, IHL must be 5 if no HW checksum */
- cmd_sts |= 5 << ETH_TX_IHL_SHIFT;
- desc->l4i_chk = 0;
}
- /* ensure all other descriptors are written before first cmd_sts */
- wmb();
- desc->cmd_sts = cmd_sts;
+ if (mp->rx_desc_count)
+ printk(KERN_ERR
+ "%s: Error in freeing Rx Ring. %d skb's still"
+ " stuck in RX Ring - ignoring them\n", dev->name,
+ mp->rx_desc_count);
+ /* Free RX ring */
+ if (mp->rx_sram_size)
+ iounmap(mp->p_rx_desc_area);
+ else
+ dma_free_coherent(NULL, mp->rx_desc_area_size,
+ mp->p_rx_desc_area, mp->rx_desc_dma);
+}
- /* ensure all descriptors are written before poking hardware */
- wmb();
- mv643xx_eth_port_enable_tx(mp, ETH_TX_QUEUES_ENABLED);
+/*
+ * ether_init_tx_desc_ring - Curve a Tx chain desc list and buffer in memory.
+ *
+ * DESCRIPTION:
+ * This function prepares a Tx chained list of descriptors and packet
+ * buffers in a form of a ring. The routine must be called after port
+ * initialization routine and before port start routine.
+ * The Ethernet SDMA engine uses CPU bus addresses to access the various
+ * devices in the system (i.e. DRAM). This function uses the ethernet
+ * struct 'virtual to physical' routine (set by the user) to set the ring
+ * with physical addresses.
+ *
+ * INPUT:
+ * struct mv643xx_private *mp Ethernet Port Control srtuct.
+ *
+ * OUTPUT:
+ * The routine updates the Ethernet port control struct with information
+ * regarding the Tx descriptors and buffers.
+ *
+ * RETURN:
+ * None.
+ */
+static void ether_init_tx_desc_ring(struct mv643xx_private *mp)
+{
+ int tx_desc_num = mp->tx_ring_size;
+ struct eth_tx_desc *p_tx_desc;
+ int i;
- mp->tx_desc_count += nr_frags + 1;
+ /* Initialize the next_desc_ptr links in the Tx descriptors ring */
+ p_tx_desc = (struct eth_tx_desc *)mp->p_tx_desc_area;
+ for (i = 0; i < tx_desc_num; i++) {
+ p_tx_desc[i].next_desc_ptr = mp->tx_desc_dma +
+ ((i + 1) % tx_desc_num) * sizeof(struct eth_tx_desc);
+ }
+
+ mp->tx_curr_desc_q = 0;
+ mp->tx_used_desc_q = 0;
+
+ mp->tx_desc_area_size = tx_desc_num * sizeof(struct eth_tx_desc);
}
/**
- * mv643xx_eth_start_xmit - queue an skb to the hardware for transmission
+ * mv643xx_eth_free_tx_descs - Free the tx desc data for completed descriptors
*
+ * If force is non-zero, frees uncompleted descriptors as well
*/
-static int mv643xx_eth_start_xmit(struct sk_buff *skb, struct net_device *dev)
+static int mv643xx_eth_free_tx_descs(struct net_device *dev, int force)
{
struct mv643xx_private *mp = netdev_priv(dev);
- struct net_device_stats *stats = &dev->stats;
+ struct eth_tx_desc *desc;
+ u32 cmd_sts;
+ struct sk_buff *skb;
unsigned long flags;
+ int tx_index;
+ dma_addr_t addr;
+ int count;
+ int released = 0;
- BUG_ON(netif_queue_stopped(dev));
+ while (mp->tx_desc_count > 0) {
+ spin_lock_irqsave(&mp->lock, flags);
- if (has_tiny_unaligned_frags(skb) && __skb_linearize(skb)) {
- stats->tx_dropped++;
- printk(KERN_DEBUG "%s: failed to linearize tiny "
- "unaligned fragment\n", dev->name);
- return NETDEV_TX_BUSY;
- }
+ /* tx_desc_count might have changed before acquiring the lock */
+ if (mp->tx_desc_count <= 0) {
+ spin_unlock_irqrestore(&mp->lock, flags);
+ return released;
+ }
- spin_lock_irqsave(&mp->lock, flags);
+ tx_index = mp->tx_used_desc_q;
+ desc = &mp->p_tx_desc_area[tx_index];
+ cmd_sts = desc->cmd_sts;
- if (mp->tx_ring_size - mp->tx_desc_count < MAX_DESCS_PER_SKB) {
- printk(KERN_ERR "%s: transmit with queue full\n", dev->name);
- netif_stop_queue(dev);
- spin_unlock_irqrestore(&mp->lock, flags);
- return NETDEV_TX_BUSY;
- }
+ if (!force && (cmd_sts & ETH_BUFFER_OWNED_BY_DMA)) {
+ spin_unlock_irqrestore(&mp->lock, flags);
+ return released;
+ }
- eth_tx_submit_descs_for_skb(mp, skb);
- stats->tx_bytes += skb->len;
- stats->tx_packets++;
- dev->trans_start = jiffies;
+ mp->tx_used_desc_q = (tx_index + 1) % mp->tx_ring_size;
+ mp->tx_desc_count--;
- if (mp->tx_ring_size - mp->tx_desc_count < MAX_DESCS_PER_SKB)
- netif_stop_queue(dev);
+ addr = desc->buf_ptr;
+ count = desc->byte_cnt;
+ skb = mp->tx_skb[tx_index];
+ if (skb)
+ mp->tx_skb[tx_index] = NULL;
- spin_unlock_irqrestore(&mp->lock, flags);
+ if (cmd_sts & ETH_ERROR_SUMMARY) {
+ printk("%s: Error in TX\n", dev->name);
+ dev->stats.tx_errors++;
+ }
- return NETDEV_TX_OK;
-}
+ spin_unlock_irqrestore(&mp->lock, flags);
-#ifdef CONFIG_NET_POLL_CONTROLLER
-static void mv643xx_netpoll(struct net_device *netdev)
-{
- struct mv643xx_private *mp = netdev_priv(netdev);
- int port_num = mp->port_num;
+ if (cmd_sts & ETH_TX_FIRST_DESC)
+ dma_unmap_single(NULL, addr, count, DMA_TO_DEVICE);
+ else
+ dma_unmap_page(NULL, addr, count, DMA_TO_DEVICE);
- wrl(mp, INTERRUPT_MASK_REG(port_num), ETH_INT_MASK_ALL);
- /* wait for previous write to complete */
- rdl(mp, INTERRUPT_MASK_REG(port_num));
+ if (skb)
+ dev_kfree_skb_irq(skb);
- mv643xx_eth_int_handler(netdev->irq, netdev);
+ released = 1;
+ }
- wrl(mp, INTERRUPT_MASK_REG(port_num), ETH_INT_UNMASK_ALL);
+ return released;
}
-#endif
-static void mv643xx_init_ethtool_cmd(struct net_device *dev, int phy_address,
- int speed, int duplex,
- struct ethtool_cmd *cmd)
+static void mv643xx_eth_free_completed_tx_descs(struct net_device *dev)
{
struct mv643xx_private *mp = netdev_priv(dev);
- memset(cmd, 0, sizeof(*cmd));
-
- cmd->port = PORT_MII;
- cmd->transceiver = XCVR_INTERNAL;
- cmd->phy_address = phy_address;
-
- if (speed == 0) {
- cmd->autoneg = AUTONEG_ENABLE;
- /* mii lib checks, but doesn't use speed on AUTONEG_ENABLE */
- cmd->speed = SPEED_100;
- cmd->advertising = ADVERTISED_10baseT_Half |
- ADVERTISED_10baseT_Full |
- ADVERTISED_100baseT_Half |
- ADVERTISED_100baseT_Full;
- if (mp->mii.supports_gmii)
- cmd->advertising |= ADVERTISED_1000baseT_Full;
- } else {
- cmd->autoneg = AUTONEG_DISABLE;
- cmd->speed = speed;
- cmd->duplex = duplex;
- }
+ if (mv643xx_eth_free_tx_descs(dev, 0) &&
+ mp->tx_ring_size - mp->tx_desc_count >= MAX_DESCS_PER_SKB)
+ netif_wake_queue(dev);
}
-/*/
- * mv643xx_eth_probe
- *
- * First function called after registering the network device.
- * It's purpose is to initialize the device as an ethernet device,
- * fill the ethernet device structure with pointers * to functions,
- * and set the MAC address of the interface
- *
- * Input : struct device *
- * Output : -ENOMEM if failed , 0 if success
- */
-static int mv643xx_eth_probe(struct platform_device *pdev)
+static void mv643xx_eth_free_all_tx_descs(struct net_device *dev)
{
- struct mv643xx_eth_platform_data *pd;
- int port_num;
- struct mv643xx_private *mp;
- struct net_device *dev;
- u8 *p;
- struct resource *res;
- int err;
- struct ethtool_cmd cmd;
- int duplex = DUPLEX_HALF;
- int speed = 0; /* default to auto-negotiation */
- DECLARE_MAC_BUF(mac);
+ mv643xx_eth_free_tx_descs(dev, 1);
+}
- pd = pdev->dev.platform_data;
- if (pd == NULL) {
- printk(KERN_ERR "No mv643xx_eth_platform_data\n");
- return -ENODEV;
- }
+static void mv643xx_eth_free_tx_rings(struct net_device *dev)
+{
+ struct mv643xx_private *mp = netdev_priv(dev);
- if (pd->shared == NULL) {
- printk(KERN_ERR "No mv643xx_eth_platform_data->shared\n");
- return -ENODEV;
- }
+ /* Stop Tx Queues */
+ mv643xx_eth_port_disable_tx(mp);
- dev = alloc_etherdev(sizeof(struct mv643xx_private));
- if (!dev)
- return -ENOMEM;
+ /* Free outstanding skb's on TX ring */
+ mv643xx_eth_free_all_tx_descs(dev);
- platform_set_drvdata(pdev, dev);
+ BUG_ON(mp->tx_used_desc_q != mp->tx_curr_desc_q);
- mp = netdev_priv(dev);
- mp->dev = dev;
-#ifdef MV643XX_NAPI
- netif_napi_add(dev, &mp->napi, mv643xx_poll, 64);
-#endif
+ /* Free TX ring */
+ if (mp->tx_sram_size)
+ iounmap(mp->p_tx_desc_area);
+ else
+ dma_free_coherent(NULL, mp->tx_desc_area_size,
+ mp->p_tx_desc_area, mp->tx_desc_dma);
+}
- res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
- BUG_ON(!res);
- dev->irq = res->start;
- dev->open = mv643xx_eth_open;
- dev->stop = mv643xx_eth_stop;
- dev->hard_start_xmit = mv643xx_eth_start_xmit;
- dev->set_mac_address = mv643xx_eth_set_mac_address;
- dev->set_multicast_list = mv643xx_eth_set_rx_mode;
+/* netdev ops and related ***************************************************/
+static void eth_port_reset(struct mv643xx_private *mp);
- /* No need to Tx Timeout */
- dev->tx_timeout = mv643xx_eth_tx_timeout;
+/* Set the mv643xx port configuration register for the speed/duplex mode. */
+static void mv643xx_eth_update_pscr(struct net_device *dev,
+ struct ethtool_cmd *ecmd)
+{
+ struct mv643xx_private *mp = netdev_priv(dev);
+ int port_num = mp->port_num;
+ u32 o_pscr, n_pscr;
+ unsigned int queues;
-#ifdef CONFIG_NET_POLL_CONTROLLER
- dev->poll_controller = mv643xx_netpoll;
-#endif
+ o_pscr = rdl(mp, PORT_SERIAL_CONTROL_REG(port_num));
+ n_pscr = o_pscr;
- dev->watchdog_timeo = 2 * HZ;
- dev->base_addr = 0;
- dev->change_mtu = mv643xx_eth_change_mtu;
- dev->do_ioctl = mv643xx_eth_do_ioctl;
- SET_ETHTOOL_OPS(dev, &mv643xx_ethtool_ops);
+ /* clear speed, duplex and rx buffer size fields */
+ n_pscr &= ~(SET_MII_SPEED_TO_100 |
+ SET_GMII_SPEED_TO_1000 |
+ SET_FULL_DUPLEX_MODE |
+ MAX_RX_PACKET_MASK);
-#ifdef MV643XX_CHECKSUM_OFFLOAD_TX
-#ifdef MAX_SKB_FRAGS
- /*
- * Zero copy can only work if we use Discovery II memory. Else, we will
- * have to map the buffers to ISA memory which is only 16 MB
- */
- dev->features = NETIF_F_SG | NETIF_F_IP_CSUM;
-#endif
-#endif
+ if (ecmd->duplex == DUPLEX_FULL)
+ n_pscr |= SET_FULL_DUPLEX_MODE;
- /* Configure the timeout task */
- INIT_WORK(&mp->tx_timeout_task, mv643xx_eth_tx_timeout_task);
+ if (ecmd->speed == SPEED_1000)
+ n_pscr |= SET_GMII_SPEED_TO_1000 |
+ MAX_RX_PACKET_9700BYTE;
+ else {
+ if (ecmd->speed == SPEED_100)
+ n_pscr |= SET_MII_SPEED_TO_100;
+ n_pscr |= MAX_RX_PACKET_1522BYTE;
+ }
- spin_lock_init(&mp->lock);
+ if (n_pscr != o_pscr) {
+ if ((o_pscr & SERIAL_PORT_ENABLE) == 0)
+ wrl(mp, PORT_SERIAL_CONTROL_REG(port_num), n_pscr);
+ else {
+ queues = mv643xx_eth_port_disable_tx(mp);
- mp->shared = platform_get_drvdata(pd->shared);
- port_num = mp->port_num = pd->port_number;
+ o_pscr &= ~SERIAL_PORT_ENABLE;
+ wrl(mp, PORT_SERIAL_CONTROL_REG(port_num), o_pscr);
+ wrl(mp, PORT_SERIAL_CONTROL_REG(port_num), n_pscr);
+ wrl(mp, PORT_SERIAL_CONTROL_REG(port_num), n_pscr);
+ if (queues)
+ mv643xx_eth_port_enable_tx(mp, queues);
+ }
+ }
+}
- if (mp->shared->win_protect)
- wrl(mp, WINDOW_PROTECT(port_num), mp->shared->win_protect);
+/*
+ * mv643xx_eth_int_handler
+ *
+ * Main interrupt handler for the gigbit ethernet ports
+ *
+ * Input : irq - irq number (not used)
+ * dev_id - a pointer to the required interface's data structure
+ * regs - not used
+ * Output : N/A
+ */
- mp->shared_smi = mp->shared;
- if (pd->shared_smi != NULL)
- mp->shared_smi = platform_get_drvdata(pd->shared_smi);
+static irqreturn_t mv643xx_eth_int_handler(int irq, void *dev_id)
+{
+ struct net_device *dev = (struct net_device *)dev_id;
+ struct mv643xx_private *mp = netdev_priv(dev);
+ u32 eth_int_cause, eth_int_cause_ext = 0;
+ unsigned int port_num = mp->port_num;
- /* set default config values */
- eth_port_uc_addr_get(mp, dev->dev_addr);
- mp->rx_ring_size = PORT_DEFAULT_RECEIVE_QUEUE_SIZE;
- mp->tx_ring_size = PORT_DEFAULT_TRANSMIT_QUEUE_SIZE;
+ /* Read interrupt cause registers */
+ eth_int_cause = rdl(mp, INTERRUPT_CAUSE_REG(port_num)) &
+ ETH_INT_UNMASK_ALL;
+ if (eth_int_cause & ETH_INT_CAUSE_EXT) {
+ eth_int_cause_ext = rdl(mp,
+ INTERRUPT_CAUSE_EXTEND_REG(port_num)) &
+ ETH_INT_UNMASK_ALL_EXT;
+ wrl(mp, INTERRUPT_CAUSE_EXTEND_REG(port_num),
+ ~eth_int_cause_ext);
+ }
- if (is_valid_ether_addr(pd->mac_addr))
- memcpy(dev->dev_addr, pd->mac_addr, 6);
+ /* PHY status changed */
+ if (eth_int_cause_ext & (ETH_INT_CAUSE_PHY | ETH_INT_CAUSE_STATE)) {
+ struct ethtool_cmd cmd;
- if (pd->phy_addr || pd->force_phy_addr)
- ethernet_phy_set(mp, pd->phy_addr);
+ if (mii_link_ok(&mp->mii)) {
+ mii_ethtool_gset(&mp->mii, &cmd);
+ mv643xx_eth_update_pscr(dev, &cmd);
+ mv643xx_eth_port_enable_tx(mp, ETH_TX_QUEUES_ENABLED);
+ if (!netif_carrier_ok(dev)) {
+ netif_carrier_on(dev);
+ if (mp->tx_ring_size - mp->tx_desc_count >=
+ MAX_DESCS_PER_SKB)
+ netif_wake_queue(dev);
+ }
+ } else if (netif_carrier_ok(dev)) {
+ netif_stop_queue(dev);
+ netif_carrier_off(dev);
+ }
+ }
- if (pd->rx_queue_size)
- mp->rx_ring_size = pd->rx_queue_size;
+#ifdef MV643XX_NAPI
+ if (eth_int_cause & ETH_INT_CAUSE_RX) {
+ /* schedule the NAPI poll routine to maintain port */
+ wrl(mp, INTERRUPT_MASK_REG(port_num), ETH_INT_MASK_ALL);
- if (pd->tx_queue_size)
- mp->tx_ring_size = pd->tx_queue_size;
+ /* wait for previous write to complete */
+ rdl(mp, INTERRUPT_MASK_REG(port_num));
- if (pd->tx_sram_size) {
- mp->tx_sram_size = pd->tx_sram_size;
- mp->tx_sram_addr = pd->tx_sram_addr;
+ netif_rx_schedule(dev, &mp->napi);
}
-
- if (pd->rx_sram_size) {
- mp->rx_sram_size = pd->rx_sram_size;
- mp->rx_sram_addr = pd->rx_sram_addr;
- }
-
- duplex = pd->duplex;
- speed = pd->speed;
-
- /* Hook up MII support for ethtool */
- mp->mii.dev = dev;
- mp->mii.mdio_read = mv643xx_mdio_read;
- mp->mii.mdio_write = mv643xx_mdio_write;
- mp->mii.phy_id = ethernet_phy_get(mp);
- mp->mii.phy_id_mask = 0x3f;
- mp->mii.reg_num_mask = 0x1f;
-
- err = ethernet_phy_detect(mp);
- if (err) {
- pr_debug("%s: No PHY detected at addr %d\n",
- dev->name, ethernet_phy_get(mp));
- goto out;
- }
-
- ethernet_phy_reset(mp);
- mp->mii.supports_gmii = mii_check_gmii_support(&mp->mii);
- mv643xx_init_ethtool_cmd(dev, mp->mii.phy_id, speed, duplex, &cmd);
- mv643xx_eth_update_pscr(dev, &cmd);
- mv643xx_set_settings(dev, &cmd);
-
- SET_NETDEV_DEV(dev, &pdev->dev);
- err = register_netdev(dev);
- if (err)
- goto out;
-
- p = dev->dev_addr;
- printk(KERN_NOTICE
- "%s: port %d with MAC address %s\n",
- dev->name, port_num, print_mac(mac, p));
-
- if (dev->features & NETIF_F_SG)
- printk(KERN_NOTICE "%s: Scatter Gather Enabled\n", dev->name);
-
- if (dev->features & NETIF_F_IP_CSUM)
- printk(KERN_NOTICE "%s: TX TCP/IP Checksumming Supported\n",
- dev->name);
-
-#ifdef MV643XX_CHECKSUM_OFFLOAD_TX
- printk(KERN_NOTICE "%s: RX TCP/UDP Checksum Offload ON \n", dev->name);
-#endif
-
-#ifdef MV643XX_COAL
- printk(KERN_NOTICE "%s: TX and RX Interrupt Coalescing ON \n",
- dev->name);
-#endif
-
-#ifdef MV643XX_NAPI
- printk(KERN_NOTICE "%s: RX NAPI Enabled \n", dev->name);
-#endif
-
- if (mp->tx_sram_size > 0)
- printk(KERN_NOTICE "%s: Using SRAM\n", dev->name);
-
- return 0;
-
-out:
- free_netdev(dev);
-
- return err;
-}
-
-static int mv643xx_eth_remove(struct platform_device *pdev)
-{
- struct net_device *dev = platform_get_drvdata(pdev);
-
- unregister_netdev(dev);
- flush_scheduled_work();
-
- free_netdev(dev);
- platform_set_drvdata(pdev, NULL);
- return 0;
-}
-
-static void mv643xx_eth_conf_mbus_windows(struct mv643xx_shared_private *msp,
- struct mbus_dram_target_info *dram)
-{
- void __iomem *base = msp->eth_base;
- u32 win_enable;
- u32 win_protect;
- int i;
-
- for (i = 0; i < 6; i++) {
- writel(0, base + WINDOW_BASE(i));
- writel(0, base + WINDOW_SIZE(i));
- if (i < 4)
- writel(0, base + WINDOW_REMAP_HIGH(i));
- }
-
- win_enable = 0x3f;
- win_protect = 0;
-
- for (i = 0; i < dram->num_cs; i++) {
- struct mbus_dram_window *cs = dram->cs + i;
-
- writel((cs->base & 0xffff0000) |
- (cs->mbus_attr << 8) |
- dram->mbus_dram_target_id, base + WINDOW_BASE(i));
- writel((cs->size - 1) & 0xffff0000, base + WINDOW_SIZE(i));
-
- win_enable &= ~(1 << i);
- win_protect |= 3 << (2 * i);
- }
-
- writel(win_enable, base + WINDOW_BAR_ENABLE);
- msp->win_protect = win_protect;
-}
-
-static int mv643xx_eth_shared_probe(struct platform_device *pdev)
-{
- static int mv643xx_version_printed = 0;
- struct mv643xx_eth_shared_platform_data *pd = pdev->dev.platform_data;
- struct mv643xx_shared_private *msp;
- struct resource *res;
- int ret;
-
- if (!mv643xx_version_printed++)
- printk(KERN_NOTICE "MV-643xx 10/100/1000 Ethernet Driver\n");
-
- ret = -EINVAL;
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (res == NULL)
- goto out;
-
- ret = -ENOMEM;
- msp = kmalloc(sizeof(*msp), GFP_KERNEL);
- if (msp == NULL)
- goto out;
- memset(msp, 0, sizeof(*msp));
-
- msp->eth_base = ioremap(res->start, res->end - res->start + 1);
- if (msp->eth_base == NULL)
- goto out_free;
-
- spin_lock_init(&msp->phy_lock);
- msp->t_clk = (pd != NULL && pd->t_clk != 0) ? pd->t_clk : 133000000;
-
- platform_set_drvdata(pdev, msp);
+#else
+ if (eth_int_cause & ETH_INT_CAUSE_RX)
+ mv643xx_eth_receive_queue(dev, INT_MAX);
+#endif
+ if (eth_int_cause_ext & ETH_INT_CAUSE_TX)
+ mv643xx_eth_free_completed_tx_descs(dev);
/*
- * (Re-)program MBUS remapping windows if we are asked to.
+ * If no real interrupt occured, exit.
+ * This can happen when using gigE interrupt coalescing mechanism.
*/
- if (pd != NULL && pd->dram != NULL)
- mv643xx_eth_conf_mbus_windows(msp, pd->dram);
-
- return 0;
-
-out_free:
- kfree(msp);
-out:
- return ret;
-}
-
-static int mv643xx_eth_shared_remove(struct platform_device *pdev)
-{
- struct mv643xx_shared_private *msp = platform_get_drvdata(pdev);
-
- iounmap(msp->eth_base);
- kfree(msp);
-
- return 0;
-}
-
-static void mv643xx_eth_shutdown(struct platform_device *pdev)
-{
- struct net_device *dev = platform_get_drvdata(pdev);
- struct mv643xx_private *mp = netdev_priv(dev);
- unsigned int port_num = mp->port_num;
-
- /* Mask all interrupts on ethernet port */
- wrl(mp, INTERRUPT_MASK_REG(port_num), 0);
- rdl(mp, INTERRUPT_MASK_REG(port_num));
-
- eth_port_reset(mp);
-}
-
-static struct platform_driver mv643xx_eth_driver = {
- .probe = mv643xx_eth_probe,
- .remove = mv643xx_eth_remove,
- .shutdown = mv643xx_eth_shutdown,
- .driver = {
- .name = MV643XX_ETH_NAME,
- .owner = THIS_MODULE,
- },
-};
-
-static struct platform_driver mv643xx_eth_shared_driver = {
- .probe = mv643xx_eth_shared_probe,
- .remove = mv643xx_eth_shared_remove,
- .driver = {
- .name = MV643XX_ETH_SHARED_NAME,
- .owner = THIS_MODULE,
- },
-};
-
-/*
- * mv643xx_init_module
- *
- * Registers the network drivers into the Linux kernel
- *
- * Input : N/A
- *
- * Output : N/A
- */
-static int __init mv643xx_init_module(void)
-{
- int rc;
-
- rc = platform_driver_register(&mv643xx_eth_shared_driver);
- if (!rc) {
- rc = platform_driver_register(&mv643xx_eth_driver);
- if (rc)
- platform_driver_unregister(&mv643xx_eth_shared_driver);
- }
- return rc;
-}
+ if ((eth_int_cause == 0x0) && (eth_int_cause_ext == 0x0))
+ return IRQ_NONE;
-/*
- * mv643xx_cleanup_module
- *
- * Registers the network drivers into the Linux kernel
- *
- * Input : N/A
- *
- * Output : N/A
- */
-static void __exit mv643xx_cleanup_module(void)
-{
- platform_driver_unregister(&mv643xx_eth_driver);
- platform_driver_unregister(&mv643xx_eth_shared_driver);
+ return IRQ_HANDLED;
}
-module_init(mv643xx_init_module);
-module_exit(mv643xx_cleanup_module);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR( "Rabeeh Khoury, Assaf Hoffman, Matthew Dharm, Manish Lachwani"
- " and Dale Farnsworth");
-MODULE_DESCRIPTION("Ethernet driver for Marvell MV643XX");
-MODULE_ALIAS("platform:" MV643XX_ETH_NAME);
-MODULE_ALIAS("platform:" MV643XX_ETH_SHARED_NAME);
-
-/*
- * The second part is the low level driver of the gigE ethernet ports.
- */
-
-/*
- * Marvell's Gigabit Ethernet controller low level driver
- *
- * DESCRIPTION:
- * This file introduce low level API to Marvell's Gigabit Ethernet
- * controller. This Gigabit Ethernet Controller driver API controls
- * 1) Operations (i.e. port init, start, reset etc').
- * 2) Data flow (i.e. port send, receive etc').
- * Each Gigabit Ethernet port is controlled via
- * struct mv643xx_private.
- * This struct includes user configuration information as well as
- * driver internal data needed for its operations.
- *
- * Supported Features:
- * - This low level driver is OS independent. Allocating memory for
- * the descriptor rings and buffers are not within the scope of
- * this driver.
- * - The user is free from Rx/Tx queue managing.
- * - This low level driver introduce functionality API that enable
- * the to operate Marvell's Gigabit Ethernet Controller in a
- * convenient way.
- * - Simple Gigabit Ethernet port operation API.
- * - Simple Gigabit Ethernet port data flow API.
- * - Data flow and operation API support per queue functionality.
- * - Support cached descriptors for better performance.
- * - Enable access to all four DRAM banks and internal SRAM memory
- * spaces.
- * - PHY access and control API.
- * - Port control register configuration API.
- * - Full control over Unicast and Multicast MAC configurations.
- *
- * Operation flow:
- *
- * Initialization phase
- * This phase complete the initialization of the the
- * mv643xx_private struct.
- * User information regarding port configuration has to be set
- * prior to calling the port initialization routine.
- *
- * In this phase any port Tx/Rx activity is halted, MIB counters
- * are cleared, PHY address is set according to user parameter and
- * access to DRAM and internal SRAM memory spaces.
- *
- * Driver ring initialization
- * Allocating memory for the descriptor rings and buffers is not
- * within the scope of this driver. Thus, the user is required to
- * allocate memory for the descriptors ring and buffers. Those
- * memory parameters are used by the Rx and Tx ring initialization
- * routines in order to curve the descriptor linked list in a form
- * of a ring.
- * Note: Pay special attention to alignment issues when using
- * cached descriptors/buffers. In this phase the driver store
- * information in the mv643xx_private struct regarding each queue
- * ring.
- *
- * Driver start
- * This phase prepares the Ethernet port for Rx and Tx activity.
- * It uses the information stored in the mv643xx_private struct to
- * initialize the various port registers.
- *
- * Data flow:
- * All packet references to/from the driver are done using
- * struct pkt_info.
- * This struct is a unified struct used with Rx and Tx operations.
- * This way the user is not required to be familiar with neither
- * Tx nor Rx descriptors structures.
- * The driver's descriptors rings are management by indexes.
- * Those indexes controls the ring resources and used to indicate
- * a SW resource error:
- * 'current'
- * This index points to the current available resource for use. For
- * example in Rx process this index will point to the descriptor
- * that will be passed to the user upon calling the receive
- * routine. In Tx process, this index will point to the descriptor
- * that will be assigned with the user packet info and transmitted.
- * 'used'
- * This index points to the descriptor that need to restore its
- * resources. For example in Rx process, using the Rx buffer return
- * API will attach the buffer returned in packet info to the
- * descriptor pointed by 'used'. In Tx process, using the Tx
- * descriptor return will merely return the user packet info with
- * the command status of the transmitted buffer pointed by the
- * 'used' index. Nevertheless, it is essential to use this routine
- * to update the 'used' index.
- * 'first'
- * This index supports Tx Scatter-Gather. It points to the first
- * descriptor of a packet assembled of multiple buffers. For
- * example when in middle of Such packet we have a Tx resource
- * error the 'curr' index get the value of 'first' to indicate
- * that the ring returned to its state before trying to transmit
- * this packet.
- *
- * Receive operation:
- * The eth_port_receive API set the packet information struct,
- * passed by the caller, with received information from the
- * 'current' SDMA descriptor.
- * It is the user responsibility to return this resource back
- * to the Rx descriptor ring to enable the reuse of this source.
- * Return Rx resource is done using the eth_rx_return_buff API.
- *
- * Prior to calling the initialization routine eth_port_init() the user
- * must set the following fields under mv643xx_private struct:
- * port_num User Ethernet port number.
- * port_config User port configuration value.
- * port_config_extend User port config extend value.
- * port_sdma_config User port SDMA config value.
- * port_serial_control User port serial control value.
- *
- * This driver data flow is done using the struct pkt_info which
- * is a unified struct for Rx and Tx operations:
- *
- * byte_cnt Tx/Rx descriptor buffer byte count.
- * l4i_chk CPU provided TCP Checksum. For Tx operation
- * only.
- * cmd_sts Tx/Rx descriptor command status.
- * buf_ptr Tx/Rx descriptor buffer pointer.
- * return_info Tx/Rx user resource return information.
- */
-
-/* Ethernet Port routines */
-static void eth_port_set_filter_table_entry(struct mv643xx_private *mp,
- int table, unsigned char entry);
-
/*
- * eth_port_init - Initialize the Ethernet port driver
+ * ethernet_phy_reset - Reset Ethernet port PHY.
*
* DESCRIPTION:
- * This function prepares the ethernet port to start its activity:
- * 1) Completes the ethernet port driver struct initialization toward port
- * start routine.
- * 2) Resets the device to a quiescent state in case of warm reboot.
- * 3) Enable SDMA access to all four DRAM banks as well as internal SRAM.
- * 4) Clean MAC tables. The reset status of those tables is unknown.
- * 5) Set PHY address.
- * Note: Call this routine prior to eth_port_start routine and after
- * setting user values in the user fields of Ethernet port control
- * struct.
+ * This routine utilizes the SMI interface to reset the ethernet port PHY.
*
* INPUT:
- * struct mv643xx_private *mp Ethernet port control struct
+ * struct mv643xx_private *mp Ethernet Port.
*
* OUTPUT:
- * See description.
+ * The PHY is reset.
*
* RETURN:
* None.
+ *
*/
-static void eth_port_init(struct mv643xx_private *mp)
+static void ethernet_phy_reset(struct mv643xx_private *mp)
{
- mp->rx_resource_err = 0;
+ unsigned int phy_reg_data;
- eth_port_reset(mp);
+ /* Reset the PHY */
+ eth_port_read_smi_reg(mp, 0, &phy_reg_data);
+ phy_reg_data |= 0x8000; /* Set bit 15 to reset the PHY */
+ eth_port_write_smi_reg(mp, 0, phy_reg_data);
- eth_port_init_mac_tables(mp);
+ /* wait for PHY to come out of reset */
+ do {
+ udelay(1);
+ eth_port_read_smi_reg(mp, 0, &phy_reg_data);
+ } while (phy_reg_data & 0x8000);
}
/*
mv643xx_set_settings(dev, ðtool_cmd);
}
+#ifdef MV643XX_COAL
+
/*
- * eth_port_uc_addr_set - Write a MAC address into the port's hw registers
+ * eth_port_set_rx_coal - Sets coalescing interrupt mechanism on RX path
+ *
+ * DESCRIPTION:
+ * This routine sets the RX coalescing interrupt mechanism parameter.
+ * This parameter is a timeout counter, that counts in 64 t_clk
+ * chunks ; that when timeout event occurs a maskable interrupt
+ * occurs.
+ * The parameter is calculated using the tClk of the MV-643xx chip
+ * , and the required delay of the interrupt in usec.
+ *
+ * INPUT:
+ * struct mv643xx_private *mp Ethernet port
+ * unsigned int delay Delay in usec
+ *
+ * OUTPUT:
+ * Interrupt coalescing mechanism value is set in MV-643xx chip.
+ *
+ * RETURN:
+ * The interrupt coalescing value set in the gigE port.
+ *
*/
-static void eth_port_uc_addr_set(struct mv643xx_private *mp,
- unsigned char *p_addr)
+static unsigned int eth_port_set_rx_coal(struct mv643xx_private *mp,
+ unsigned int delay)
{
unsigned int port_num = mp->port_num;
- unsigned int mac_h;
- unsigned int mac_l;
- int table;
-
- mac_l = (p_addr[4] << 8) | (p_addr[5]);
- mac_h = (p_addr[0] << 24) | (p_addr[1] << 16) | (p_addr[2] << 8) |
- (p_addr[3] << 0);
+ unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64;
- wrl(mp, MAC_ADDR_LOW(port_num), mac_l);
- wrl(mp, MAC_ADDR_HIGH(port_num), mac_h);
+ /* Set RX Coalescing mechanism */
+ wrl(mp, SDMA_CONFIG_REG(port_num),
+ ((coal & 0x3fff) << 8) |
+ (rdl(mp, SDMA_CONFIG_REG(port_num))
+ & 0xffc000ff));
- /* Accept frames with this address */
- table = DA_FILTER_UNICAST_TABLE_BASE(port_num);
- eth_port_set_filter_table_entry(mp, table, p_addr[5] & 0x0f);
+ return coal;
}
+#endif
/*
- * eth_port_uc_addr_get - Read the MAC address from the port's hw registers
+ * eth_port_set_tx_coal - Sets coalescing interrupt mechanism on TX path
+ *
+ * DESCRIPTION:
+ * This routine sets the TX coalescing interrupt mechanism parameter.
+ * This parameter is a timeout counter, that counts in 64 t_clk
+ * chunks ; that when timeout event occurs a maskable interrupt
+ * occurs.
+ * The parameter is calculated using the t_cLK frequency of the
+ * MV-643xx chip and the required delay in the interrupt in uSec
+ *
+ * INPUT:
+ * struct mv643xx_private *mp Ethernet port
+ * unsigned int delay Delay in uSeconds
+ *
+ * OUTPUT:
+ * Interrupt coalescing mechanism value is set in MV-643xx chip.
+ *
+ * RETURN:
+ * The interrupt coalescing value set in the gigE port.
+ *
*/
-static void eth_port_uc_addr_get(struct mv643xx_private *mp,
- unsigned char *p_addr)
+static unsigned int eth_port_set_tx_coal(struct mv643xx_private *mp,
+ unsigned int delay)
{
- unsigned int port_num = mp->port_num;
- unsigned int mac_h;
- unsigned int mac_l;
+ unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64;
- mac_h = rdl(mp, MAC_ADDR_HIGH(port_num));
- mac_l = rdl(mp, MAC_ADDR_LOW(port_num));
+ /* Set TX Coalescing mechanism */
+ wrl(mp, TX_FIFO_URGENT_THRESHOLD_REG(mp->port_num), coal << 4);
- p_addr[0] = (mac_h >> 24) & 0xff;
- p_addr[1] = (mac_h >> 16) & 0xff;
- p_addr[2] = (mac_h >> 8) & 0xff;
- p_addr[3] = mac_h & 0xff;
- p_addr[4] = (mac_l >> 8) & 0xff;
- p_addr[5] = mac_l & 0xff;
+ return coal;
}
/*
- * The entries in each table are indexed by a hash of a packet's MAC
- * address. One bit in each entry determines whether the packet is
- * accepted. There are 4 entries (each 8 bits wide) in each register
- * of the table. The bits in each entry are defined as follows:
- * 0 Accept=1, Drop=0
- * 3-1 Queue (ETH_Q0=0)
- * 7-4 Reserved = 0;
+ * eth_port_init - Initialize the Ethernet port driver
+ *
+ * DESCRIPTION:
+ * This function prepares the ethernet port to start its activity:
+ * 1) Completes the ethernet port driver struct initialization toward port
+ * start routine.
+ * 2) Resets the device to a quiescent state in case of warm reboot.
+ * 3) Enable SDMA access to all four DRAM banks as well as internal SRAM.
+ * 4) Clean MAC tables. The reset status of those tables is unknown.
+ * 5) Set PHY address.
+ * Note: Call this routine prior to eth_port_start routine and after
+ * setting user values in the user fields of Ethernet port control
+ * struct.
+ *
+ * INPUT:
+ * struct mv643xx_private *mp Ethernet port control struct
+ *
+ * OUTPUT:
+ * See description.
+ *
+ * RETURN:
+ * None.
*/
-static void eth_port_set_filter_table_entry(struct mv643xx_private *mp,
- int table, unsigned char entry)
+static void eth_port_init(struct mv643xx_private *mp)
{
- unsigned int table_reg;
- unsigned int tbl_offset;
- unsigned int reg_offset;
+ mp->rx_resource_err = 0;
- tbl_offset = (entry / 4) * 4; /* Register offset of DA table entry */
- reg_offset = entry % 4; /* Entry offset within the register */
+ eth_port_reset(mp);
- /* Set "accepts frame bit" at specified table entry */
- table_reg = rdl(mp, table + tbl_offset);
- table_reg |= 0x01 << (8 * reg_offset);
- wrl(mp, table + tbl_offset, table_reg);
+ eth_port_init_mac_tables(mp);
}
/*
- * eth_port_mc_addr - Multicast address settings.
+ * mv643xx_eth_open
*
- * The MV device supports multicast using two tables:
- * 1) Special Multicast Table for MAC addresses of the form
- * 0x01-00-5E-00-00-XX (where XX is between 0x00 and 0x_FF).
- * The MAC DA[7:0] bits are used as a pointer to the Special Multicast
- * Table entries in the DA-Filter table.
- * 2) Other Multicast Table for multicast of another type. A CRC-8bit
- * is used as an index to the Other Multicast Table entries in the
- * DA-Filter table. This function calculates the CRC-8bit value.
- * In either case, eth_port_set_filter_table_entry() is then called
- * to set to set the actual table entry.
+ * This function is called when openning the network device. The function
+ * should initialize all the hardware, initialize cyclic Rx/Tx
+ * descriptors chain and buffers and allocate an IRQ to the network
+ * device.
+ *
+ * Input : a pointer to the network device structure
+ *
+ * Output : zero of success , nonzero if fails.
*/
-static void eth_port_mc_addr(struct mv643xx_private *mp, unsigned char *p_addr)
+
+static int mv643xx_eth_open(struct net_device *dev)
{
+ struct mv643xx_private *mp = netdev_priv(dev);
unsigned int port_num = mp->port_num;
- unsigned int mac_h;
- unsigned int mac_l;
- unsigned char crc_result = 0;
- int table;
- int mac_array[48];
- int crc[8];
- int i;
+ unsigned int size;
+ int err;
- if ((p_addr[0] == 0x01) && (p_addr[1] == 0x00) &&
- (p_addr[2] == 0x5E) && (p_addr[3] == 0x00) && (p_addr[4] == 0x00)) {
- table = DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE(port_num);
- eth_port_set_filter_table_entry(mp, table, p_addr[5]);
- return;
+ /* Clear any pending ethernet port interrupts */
+ wrl(mp, INTERRUPT_CAUSE_REG(port_num), 0);
+ wrl(mp, INTERRUPT_CAUSE_EXTEND_REG(port_num), 0);
+ /* wait for previous write to complete */
+ rdl(mp, INTERRUPT_CAUSE_EXTEND_REG(port_num));
+
+ err = request_irq(dev->irq, mv643xx_eth_int_handler,
+ IRQF_SHARED | IRQF_SAMPLE_RANDOM, dev->name, dev);
+ if (err) {
+ printk(KERN_ERR "%s: Can not assign IRQ\n", dev->name);
+ return -EAGAIN;
}
- /* Calculate CRC-8 out of the given address */
- mac_h = (p_addr[0] << 8) | (p_addr[1]);
- mac_l = (p_addr[2] << 24) | (p_addr[3] << 16) |
- (p_addr[4] << 8) | (p_addr[5] << 0);
+ eth_port_init(mp);
- for (i = 0; i < 32; i++)
- mac_array[i] = (mac_l >> i) & 0x1;
- for (i = 32; i < 48; i++)
- mac_array[i] = (mac_h >> (i - 32)) & 0x1;
+ memset(&mp->timeout, 0, sizeof(struct timer_list));
+ mp->timeout.function = mv643xx_eth_rx_refill_descs_timer_wrapper;
+ mp->timeout.data = (unsigned long)dev;
- crc[0] = mac_array[45] ^ mac_array[43] ^ mac_array[40] ^ mac_array[39] ^
- mac_array[35] ^ mac_array[34] ^ mac_array[31] ^ mac_array[30] ^
- mac_array[28] ^ mac_array[23] ^ mac_array[21] ^ mac_array[19] ^
- mac_array[18] ^ mac_array[16] ^ mac_array[14] ^ mac_array[12] ^
- mac_array[8] ^ mac_array[7] ^ mac_array[6] ^ mac_array[0];
+ /* Allocate RX and TX skb rings */
+ mp->rx_skb = kmalloc(sizeof(*mp->rx_skb) * mp->rx_ring_size,
+ GFP_KERNEL);
+ if (!mp->rx_skb) {
+ printk(KERN_ERR "%s: Cannot allocate Rx skb ring\n", dev->name);
+ err = -ENOMEM;
+ goto out_free_irq;
+ }
+ mp->tx_skb = kmalloc(sizeof(*mp->tx_skb) * mp->tx_ring_size,
+ GFP_KERNEL);
+ if (!mp->tx_skb) {
+ printk(KERN_ERR "%s: Cannot allocate Tx skb ring\n", dev->name);
+ err = -ENOMEM;
+ goto out_free_rx_skb;
+ }
- crc[1] = mac_array[46] ^ mac_array[45] ^ mac_array[44] ^ mac_array[43] ^
- mac_array[41] ^ mac_array[39] ^ mac_array[36] ^ mac_array[34] ^
- mac_array[32] ^ mac_array[30] ^ mac_array[29] ^ mac_array[28] ^
- mac_array[24] ^ mac_array[23] ^ mac_array[22] ^ mac_array[21] ^
- mac_array[20] ^ mac_array[18] ^ mac_array[17] ^ mac_array[16] ^
- mac_array[15] ^ mac_array[14] ^ mac_array[13] ^ mac_array[12] ^
- mac_array[9] ^ mac_array[6] ^ mac_array[1] ^ mac_array[0];
+ /* Allocate TX ring */
+ mp->tx_desc_count = 0;
+ size = mp->tx_ring_size * sizeof(struct eth_tx_desc);
+ mp->tx_desc_area_size = size;
- crc[2] = mac_array[47] ^ mac_array[46] ^ mac_array[44] ^ mac_array[43] ^
- mac_array[42] ^ mac_array[39] ^ mac_array[37] ^ mac_array[34] ^
- mac_array[33] ^ mac_array[29] ^ mac_array[28] ^ mac_array[25] ^
- mac_array[24] ^ mac_array[22] ^ mac_array[17] ^ mac_array[15] ^
- mac_array[13] ^ mac_array[12] ^ mac_array[10] ^ mac_array[8] ^
- mac_array[6] ^ mac_array[2] ^ mac_array[1] ^ mac_array[0];
+ if (mp->tx_sram_size) {
+ mp->p_tx_desc_area = ioremap(mp->tx_sram_addr,
+ mp->tx_sram_size);
+ mp->tx_desc_dma = mp->tx_sram_addr;
+ } else
+ mp->p_tx_desc_area = dma_alloc_coherent(NULL, size,
+ &mp->tx_desc_dma,
+ GFP_KERNEL);
- crc[3] = mac_array[47] ^ mac_array[45] ^ mac_array[44] ^ mac_array[43] ^
- mac_array[40] ^ mac_array[38] ^ mac_array[35] ^ mac_array[34] ^
- mac_array[30] ^ mac_array[29] ^ mac_array[26] ^ mac_array[25] ^
- mac_array[23] ^ mac_array[18] ^ mac_array[16] ^ mac_array[14] ^
- mac_array[13] ^ mac_array[11] ^ mac_array[9] ^ mac_array[7] ^
- mac_array[3] ^ mac_array[2] ^ mac_array[1];
+ if (!mp->p_tx_desc_area) {
+ printk(KERN_ERR "%s: Cannot allocate Tx Ring (size %d bytes)\n",
+ dev->name, size);
+ err = -ENOMEM;
+ goto out_free_tx_skb;
+ }
+ BUG_ON((u32) mp->p_tx_desc_area & 0xf); /* check 16-byte alignment */
+ memset((void *)mp->p_tx_desc_area, 0, mp->tx_desc_area_size);
- crc[4] = mac_array[46] ^ mac_array[45] ^ mac_array[44] ^ mac_array[41] ^
- mac_array[39] ^ mac_array[36] ^ mac_array[35] ^ mac_array[31] ^
- mac_array[30] ^ mac_array[27] ^ mac_array[26] ^ mac_array[24] ^
- mac_array[19] ^ mac_array[17] ^ mac_array[15] ^ mac_array[14] ^
- mac_array[12] ^ mac_array[10] ^ mac_array[8] ^ mac_array[4] ^
- mac_array[3] ^ mac_array[2];
+ ether_init_tx_desc_ring(mp);
- crc[5] = mac_array[47] ^ mac_array[46] ^ mac_array[45] ^ mac_array[42] ^
- mac_array[40] ^ mac_array[37] ^ mac_array[36] ^ mac_array[32] ^
- mac_array[31] ^ mac_array[28] ^ mac_array[27] ^ mac_array[25] ^
- mac_array[20] ^ mac_array[18] ^ mac_array[16] ^ mac_array[15] ^
- mac_array[13] ^ mac_array[11] ^ mac_array[9] ^ mac_array[5] ^
- mac_array[4] ^ mac_array[3];
+ /* Allocate RX ring */
+ mp->rx_desc_count = 0;
+ size = mp->rx_ring_size * sizeof(struct eth_rx_desc);
+ mp->rx_desc_area_size = size;
- crc[6] = mac_array[47] ^ mac_array[46] ^ mac_array[43] ^ mac_array[41] ^
- mac_array[38] ^ mac_array[37] ^ mac_array[33] ^ mac_array[32] ^
- mac_array[29] ^ mac_array[28] ^ mac_array[26] ^ mac_array[21] ^
- mac_array[19] ^ mac_array[17] ^ mac_array[16] ^ mac_array[14] ^
- mac_array[12] ^ mac_array[10] ^ mac_array[6] ^ mac_array[5] ^
- mac_array[4];
+ if (mp->rx_sram_size) {
+ mp->p_rx_desc_area = ioremap(mp->rx_sram_addr,
+ mp->rx_sram_size);
+ mp->rx_desc_dma = mp->rx_sram_addr;
+ } else
+ mp->p_rx_desc_area = dma_alloc_coherent(NULL, size,
+ &mp->rx_desc_dma,
+ GFP_KERNEL);
- crc[7] = mac_array[47] ^ mac_array[44] ^ mac_array[42] ^ mac_array[39] ^
- mac_array[38] ^ mac_array[34] ^ mac_array[33] ^ mac_array[30] ^
- mac_array[29] ^ mac_array[27] ^ mac_array[22] ^ mac_array[20] ^
- mac_array[18] ^ mac_array[17] ^ mac_array[15] ^ mac_array[13] ^
- mac_array[11] ^ mac_array[7] ^ mac_array[6] ^ mac_array[5];
+ if (!mp->p_rx_desc_area) {
+ printk(KERN_ERR "%s: Cannot allocate Rx ring (size %d bytes)\n",
+ dev->name, size);
+ printk(KERN_ERR "%s: Freeing previously allocated TX queues...",
+ dev->name);
+ if (mp->rx_sram_size)
+ iounmap(mp->p_tx_desc_area);
+ else
+ dma_free_coherent(NULL, mp->tx_desc_area_size,
+ mp->p_tx_desc_area, mp->tx_desc_dma);
+ err = -ENOMEM;
+ goto out_free_tx_skb;
+ }
+ memset((void *)mp->p_rx_desc_area, 0, size);
- for (i = 0; i < 8; i++)
- crc_result = crc_result | (crc[i] << i);
+ ether_init_rx_desc_ring(mp);
- table = DA_FILTER_OTHER_MULTICAST_TABLE_BASE(port_num);
- eth_port_set_filter_table_entry(mp, table, crc_result);
-}
+ mv643xx_eth_rx_refill_descs(dev); /* Fill RX ring with skb's */
-/*
- * Set the entire multicast list based on dev->mc_list.
- */
-static void eth_port_set_multicast_list(struct net_device *dev)
-{
+#ifdef MV643XX_NAPI
+ napi_enable(&mp->napi);
+#endif
- struct dev_mc_list *mc_list;
- int i;
- int table_index;
- struct mv643xx_private *mp = netdev_priv(dev);
- unsigned int eth_port_num = mp->port_num;
+ eth_port_start(dev);
- /* If the device is in promiscuous mode or in all multicast mode,
- * we will fully populate both multicast tables with accept.
- * This is guaranteed to yield a match on all multicast addresses...
- */
- if ((dev->flags & IFF_PROMISC) || (dev->flags & IFF_ALLMULTI)) {
- for (table_index = 0; table_index <= 0xFC; table_index += 4) {
- /* Set all entries in DA filter special multicast
- * table (Ex_dFSMT)
- * Set for ETH_Q0 for now
- * Bits
- * 0 Accept=1, Drop=0
- * 3-1 Queue ETH_Q0=0
- * 7-4 Reserved = 0;
- */
- wrl(mp, DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE(eth_port_num) + table_index, 0x01010101);
+ /* Interrupt Coalescing */
- /* Set all entries in DA filter other multicast
- * table (Ex_dFOMT)
- * Set for ETH_Q0 for now
- * Bits
- * 0 Accept=1, Drop=0
- * 3-1 Queue ETH_Q0=0
- * 7-4 Reserved = 0;
- */
- wrl(mp, DA_FILTER_OTHER_MULTICAST_TABLE_BASE(eth_port_num) + table_index, 0x01010101);
- }
- return;
- }
+#ifdef MV643XX_COAL
+ mp->rx_int_coal =
+ eth_port_set_rx_coal(mp, MV643XX_RX_COAL);
+#endif
+
+ mp->tx_int_coal =
+ eth_port_set_tx_coal(mp, MV643XX_TX_COAL);
- /* We will clear out multicast tables every time we get the list.
- * Then add the entire new list...
- */
- for (table_index = 0; table_index <= 0xFC; table_index += 4) {
- /* Clear DA filter special multicast table (Ex_dFSMT) */
- wrl(mp, DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE
- (eth_port_num) + table_index, 0);
+ /* Unmask phy and link status changes interrupts */
+ wrl(mp, INTERRUPT_EXTEND_MASK_REG(port_num), ETH_INT_UNMASK_ALL_EXT);
- /* Clear DA filter other multicast table (Ex_dFOMT) */
- wrl(mp, DA_FILTER_OTHER_MULTICAST_TABLE_BASE
- (eth_port_num) + table_index, 0);
- }
+ /* Unmask RX buffer and TX end interrupt */
+ wrl(mp, INTERRUPT_MASK_REG(port_num), ETH_INT_UNMASK_ALL);
- /* Get pointer to net_device multicast list and add each one... */
- for (i = 0, mc_list = dev->mc_list;
- (i < 256) && (mc_list != NULL) && (i < dev->mc_count);
- i++, mc_list = mc_list->next)
- if (mc_list->dmi_addrlen == 6)
- eth_port_mc_addr(mp, mc_list->dmi_addr);
+ return 0;
+
+out_free_tx_skb:
+ kfree(mp->tx_skb);
+out_free_rx_skb:
+ kfree(mp->rx_skb);
+out_free_irq:
+ free_irq(dev->irq, dev);
+
+ return err;
}
/*
- * eth_port_init_mac_tables - Clear all entrance in the UC, SMC and OMC tables
+ * eth_port_reset - Reset Ethernet port
*
* DESCRIPTION:
- * Go through all the DA filter tables (Unicast, Special Multicast &
- * Other Multicast) and set each entry to 0.
+ * This routine resets the chip by aborting any SDMA engine activity and
+ * clearing the MIB counters. The Receiver and the Transmit unit are in
+ * idle state after this command is performed and the port is disabled.
*
* INPUT:
* struct mv643xx_private *mp Ethernet Port.
*
* OUTPUT:
- * Multicast and Unicast packets are rejected.
+ * Channel activity is halted.
*
* RETURN:
* None.
+ *
*/
-static void eth_port_init_mac_tables(struct mv643xx_private *mp)
+static void eth_port_reset(struct mv643xx_private *mp)
{
unsigned int port_num = mp->port_num;
- int table_index;
+ unsigned int reg_data;
- /* Clear DA filter unicast table (Ex_dFUT) */
- for (table_index = 0; table_index <= 0xC; table_index += 4)
- wrl(mp, DA_FILTER_UNICAST_TABLE_BASE(port_num) +
- table_index, 0);
+ mv643xx_eth_port_disable_tx(mp);
+ mv643xx_eth_port_disable_rx(mp);
- for (table_index = 0; table_index <= 0xFC; table_index += 4) {
- /* Clear DA filter special multicast table (Ex_dFSMT) */
- wrl(mp, DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE(port_num) +
- table_index, 0);
- /* Clear DA filter other multicast table (Ex_dFOMT) */
- wrl(mp, DA_FILTER_OTHER_MULTICAST_TABLE_BASE(port_num) +
- table_index, 0);
- }
+ /* Clear all MIB counters */
+ eth_clear_mib_counters(mp);
+
+ /* Reset the Enable bit in the Configuration Register */
+ reg_data = rdl(mp, PORT_SERIAL_CONTROL_REG(port_num));
+ reg_data &= ~(SERIAL_PORT_ENABLE |
+ DO_NOT_FORCE_LINK_FAIL |
+ FORCE_LINK_PASS);
+ wrl(mp, PORT_SERIAL_CONTROL_REG(port_num), reg_data);
}
/*
- * eth_clear_mib_counters - Clear all MIB counters
- *
- * DESCRIPTION:
- * This function clears all MIB counters of a specific ethernet port.
- * A read from the MIB counter will reset the counter.
- *
- * INPUT:
- * struct mv643xx_private *mp Ethernet Port.
- *
- * OUTPUT:
- * After reading all MIB counters, the counters resets.
- *
- * RETURN:
- * MIB counter value.
+ * mv643xx_eth_stop
*
+ * This function is used when closing the network device.
+ * It updates the hardware,
+ * release all memory that holds buffers and descriptors and release the IRQ.
+ * Input : a pointer to the device structure
+ * Output : zero if success , nonzero if fails
*/
-static void eth_clear_mib_counters(struct mv643xx_private *mp)
+
+static int mv643xx_eth_stop(struct net_device *dev)
{
+ struct mv643xx_private *mp = netdev_priv(dev);
unsigned int port_num = mp->port_num;
- int i;
-
- /* Perform dummy reads from MIB counters */
- for (i = ETH_MIB_GOOD_OCTETS_RECEIVED_LOW; i < ETH_MIB_LATE_COLLISION;
- i += 4)
- rdl(mp, MIB_COUNTERS_BASE(port_num) + i);
-}
-static inline u32 read_mib(struct mv643xx_private *mp, int offset)
-{
- return rdl(mp, MIB_COUNTERS_BASE(mp->port_num) + offset);
-}
+ /* Mask all interrupts on ethernet port */
+ wrl(mp, INTERRUPT_MASK_REG(port_num), ETH_INT_MASK_ALL);
+ /* wait for previous write to complete */
+ rdl(mp, INTERRUPT_MASK_REG(port_num));
-static void eth_update_mib_counters(struct mv643xx_private *mp)
-{
- struct mv643xx_mib_counters *p = &mp->mib_counters;
- int offset;
+#ifdef MV643XX_NAPI
+ napi_disable(&mp->napi);
+#endif
+ netif_carrier_off(dev);
+ netif_stop_queue(dev);
- p->good_octets_received +=
- read_mib(mp, ETH_MIB_GOOD_OCTETS_RECEIVED_LOW);
- p->good_octets_received +=
- (u64)read_mib(mp, ETH_MIB_GOOD_OCTETS_RECEIVED_HIGH) << 32;
+ eth_port_reset(mp);
- for (offset = ETH_MIB_BAD_OCTETS_RECEIVED;
- offset <= ETH_MIB_FRAMES_1024_TO_MAX_OCTETS;
- offset += 4)
- *(u32 *)((char *)p + offset) += read_mib(mp, offset);
+ mv643xx_eth_free_tx_rings(dev);
+ mv643xx_eth_free_rx_rings(dev);
- p->good_octets_sent += read_mib(mp, ETH_MIB_GOOD_OCTETS_SENT_LOW);
- p->good_octets_sent +=
- (u64)read_mib(mp, ETH_MIB_GOOD_OCTETS_SENT_HIGH) << 32;
+ free_irq(dev->irq, dev);
- for (offset = ETH_MIB_GOOD_FRAMES_SENT;
- offset <= ETH_MIB_LATE_COLLISION;
- offset += 4)
- *(u32 *)((char *)p + offset) += read_mib(mp, offset);
+ return 0;
}
-/*
- * ethernet_phy_detect - Detect whether a phy is present
- *
- * DESCRIPTION:
- * This function tests whether there is a PHY present on
- * the specified port.
- *
- * INPUT:
- * struct mv643xx_private *mp Ethernet Port.
- *
- * OUTPUT:
- * None
- *
- * RETURN:
- * 0 on success
- * -ENODEV on failure
- *
- */
-static int ethernet_phy_detect(struct mv643xx_private *mp)
+static int mv643xx_eth_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
{
- unsigned int phy_reg_data0;
- int auto_neg;
-
- eth_port_read_smi_reg(mp, 0, &phy_reg_data0);
- auto_neg = phy_reg_data0 & 0x1000;
- phy_reg_data0 ^= 0x1000; /* invert auto_neg */
- eth_port_write_smi_reg(mp, 0, phy_reg_data0);
-
- eth_port_read_smi_reg(mp, 0, &phy_reg_data0);
- if ((phy_reg_data0 & 0x1000) == auto_neg)
- return -ENODEV; /* change didn't take */
+ struct mv643xx_private *mp = netdev_priv(dev);
- phy_reg_data0 ^= 0x1000;
- eth_port_write_smi_reg(mp, 0, phy_reg_data0);
- return 0;
+ return generic_mii_ioctl(&mp->mii, if_mii(ifr), cmd, NULL);
}
/*
- * ethernet_phy_get - Get the ethernet port PHY address.
- *
- * DESCRIPTION:
- * This routine returns the given ethernet port PHY address.
- *
- * INPUT:
- * struct mv643xx_private *mp Ethernet Port.
- *
- * OUTPUT:
- * None.
- *
- * RETURN:
- * PHY address.
+ * Changes MTU (maximum transfer unit) of the gigabit ethenret port
*
+ * Input : pointer to ethernet interface network device structure
+ * new mtu size
+ * Output : 0 upon success, -EINVAL upon failure
*/
-static int ethernet_phy_get(struct mv643xx_private *mp)
+static int mv643xx_eth_change_mtu(struct net_device *dev, int new_mtu)
{
- unsigned int reg_data;
+ if ((new_mtu > 9500) || (new_mtu < 64))
+ return -EINVAL;
- reg_data = rdl(mp, PHY_ADDR_REG);
+ dev->mtu = new_mtu;
+ if (!netif_running(dev))
+ return 0;
- return ((reg_data >> (5 * mp->port_num)) & 0x1f);
+ /*
+ * Stop and then re-open the interface. This will allocate RX
+ * skbs of the new MTU.
+ * There is a possible danger that the open will not succeed,
+ * due to memory being full, which might fail the open function.
+ */
+ mv643xx_eth_stop(dev);
+ if (mv643xx_eth_open(dev)) {
+ printk(KERN_ERR "%s: Fatal error on opening device\n",
+ dev->name);
+ }
+
+ return 0;
}
/*
- * ethernet_phy_set - Set the ethernet port PHY address.
- *
- * DESCRIPTION:
- * This routine sets the given ethernet port PHY address.
- *
- * INPUT:
- * struct mv643xx_private *mp Ethernet Port.
- * int phy_addr PHY address.
- *
- * OUTPUT:
- * None.
- *
- * RETURN:
- * None.
+ * mv643xx_eth_tx_timeout_task
*
+ * Actual routine to reset the adapter when a timeout on Tx has occurred
*/
-static void ethernet_phy_set(struct mv643xx_private *mp, int phy_addr)
+static void mv643xx_eth_tx_timeout_task(struct work_struct *ugly)
{
- u32 reg_data;
- int addr_shift = 5 * mp->port_num;
+ struct mv643xx_private *mp = container_of(ugly, struct mv643xx_private,
+ tx_timeout_task);
+ struct net_device *dev = mp->dev;
- reg_data = rdl(mp, PHY_ADDR_REG);
- reg_data &= ~(0x1f << addr_shift);
- reg_data |= (phy_addr & 0x1f) << addr_shift;
- wrl(mp, PHY_ADDR_REG, reg_data);
-}
+ if (!netif_running(dev))
+ return;
-/*
- * ethernet_phy_reset - Reset Ethernet port PHY.
- *
- * DESCRIPTION:
- * This routine utilizes the SMI interface to reset the ethernet port PHY.
- *
- * INPUT:
- * struct mv643xx_private *mp Ethernet Port.
- *
- * OUTPUT:
- * The PHY is reset.
+ netif_stop_queue(dev);
+
+ eth_port_reset(mp);
+ eth_port_start(dev);
+
+ if (mp->tx_ring_size - mp->tx_desc_count >= MAX_DESCS_PER_SKB)
+ netif_wake_queue(dev);
+}
+
+/*
+ * mv643xx_eth_tx_timeout
*
- * RETURN:
- * None.
+ * Called upon a timeout on transmitting a packet
*
+ * Input : pointer to ethernet interface network device structure.
+ * Output : N/A
*/
-static void ethernet_phy_reset(struct mv643xx_private *mp)
+static void mv643xx_eth_tx_timeout(struct net_device *dev)
{
- unsigned int phy_reg_data;
+ struct mv643xx_private *mp = netdev_priv(dev);
- /* Reset the PHY */
- eth_port_read_smi_reg(mp, 0, &phy_reg_data);
- phy_reg_data |= 0x8000; /* Set bit 15 to reset the PHY */
- eth_port_write_smi_reg(mp, 0, phy_reg_data);
+ printk(KERN_INFO "%s: TX timeout ", dev->name);
- /* wait for PHY to come out of reset */
- do {
- udelay(1);
- eth_port_read_smi_reg(mp, 0, &phy_reg_data);
- } while (phy_reg_data & 0x8000);
+ /* Do the reset outside of interrupt context */
+ schedule_work(&mp->tx_timeout_task);
}
-static void mv643xx_eth_port_enable_tx(struct mv643xx_private *mp,
- unsigned int queues)
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void mv643xx_netpoll(struct net_device *netdev)
{
- wrl(mp, TRANSMIT_QUEUE_COMMAND_REG(mp->port_num), queues);
+ struct mv643xx_private *mp = netdev_priv(netdev);
+ int port_num = mp->port_num;
+
+ wrl(mp, INTERRUPT_MASK_REG(port_num), ETH_INT_MASK_ALL);
+ /* wait for previous write to complete */
+ rdl(mp, INTERRUPT_MASK_REG(port_num));
+
+ mv643xx_eth_int_handler(netdev->irq, netdev);
+
+ wrl(mp, INTERRUPT_MASK_REG(port_num), ETH_INT_UNMASK_ALL);
}
+#endif
-static void mv643xx_eth_port_enable_rx(struct mv643xx_private *mp,
- unsigned int queues)
+/*
+ * Wrappers for MII support library.
+ */
+static int mv643xx_mdio_read(struct net_device *dev, int phy_id, int location)
{
- wrl(mp, RECEIVE_QUEUE_COMMAND_REG(mp->port_num), queues);
+ struct mv643xx_private *mp = netdev_priv(dev);
+ int val;
+
+ eth_port_read_smi_reg(mp, location, &val);
+ return val;
}
-static unsigned int mv643xx_eth_port_disable_tx(struct mv643xx_private *mp)
+static void mv643xx_mdio_write(struct net_device *dev, int phy_id, int location, int val)
{
- unsigned int port_num = mp->port_num;
- u32 queues;
+ struct mv643xx_private *mp = netdev_priv(dev);
+ eth_port_write_smi_reg(mp, location, val);
+}
- /* Stop Tx port activity. Check port Tx activity. */
- queues = rdl(mp, TRANSMIT_QUEUE_COMMAND_REG(port_num)) & 0xFF;
- if (queues) {
- /* Issue stop command for active queues only */
- wrl(mp, TRANSMIT_QUEUE_COMMAND_REG(port_num), (queues << 8));
- /* Wait for all Tx activity to terminate. */
- /* Check port cause register that all Tx queues are stopped */
- while (rdl(mp, TRANSMIT_QUEUE_COMMAND_REG(port_num)) & 0xFF)
- udelay(PHY_WAIT_MICRO_SECONDS);
+/* platform glue ************************************************************/
+static void mv643xx_eth_conf_mbus_windows(struct mv643xx_shared_private *msp,
+ struct mbus_dram_target_info *dram)
+{
+ void __iomem *base = msp->eth_base;
+ u32 win_enable;
+ u32 win_protect;
+ int i;
- /* Wait for Tx FIFO to empty */
- while (rdl(mp, PORT_STATUS_REG(port_num)) &
- ETH_PORT_TX_FIFO_EMPTY)
- udelay(PHY_WAIT_MICRO_SECONDS);
+ for (i = 0; i < 6; i++) {
+ writel(0, base + WINDOW_BASE(i));
+ writel(0, base + WINDOW_SIZE(i));
+ if (i < 4)
+ writel(0, base + WINDOW_REMAP_HIGH(i));
}
- return queues;
+ win_enable = 0x3f;
+ win_protect = 0;
+
+ for (i = 0; i < dram->num_cs; i++) {
+ struct mbus_dram_window *cs = dram->cs + i;
+
+ writel((cs->base & 0xffff0000) |
+ (cs->mbus_attr << 8) |
+ dram->mbus_dram_target_id, base + WINDOW_BASE(i));
+ writel((cs->size - 1) & 0xffff0000, base + WINDOW_SIZE(i));
+
+ win_enable &= ~(1 << i);
+ win_protect |= 3 << (2 * i);
+ }
+
+ writel(win_enable, base + WINDOW_BAR_ENABLE);
+ msp->win_protect = win_protect;
}
-static unsigned int mv643xx_eth_port_disable_rx(struct mv643xx_private *mp)
+static int mv643xx_eth_shared_probe(struct platform_device *pdev)
{
- unsigned int port_num = mp->port_num;
- u32 queues;
+ static int mv643xx_version_printed = 0;
+ struct mv643xx_eth_shared_platform_data *pd = pdev->dev.platform_data;
+ struct mv643xx_shared_private *msp;
+ struct resource *res;
+ int ret;
- /* Stop Rx port activity. Check port Rx activity. */
- queues = rdl(mp, RECEIVE_QUEUE_COMMAND_REG(port_num)) & 0xFF;
- if (queues) {
- /* Issue stop command for active queues only */
- wrl(mp, RECEIVE_QUEUE_COMMAND_REG(port_num), (queues << 8));
+ if (!mv643xx_version_printed++)
+ printk(KERN_NOTICE "MV-643xx 10/100/1000 Ethernet Driver\n");
- /* Wait for all Rx activity to terminate. */
- /* Check port cause register that all Rx queues are stopped */
- while (rdl(mp, RECEIVE_QUEUE_COMMAND_REG(port_num)) & 0xFF)
- udelay(PHY_WAIT_MICRO_SECONDS);
- }
+ ret = -EINVAL;
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (res == NULL)
+ goto out;
- return queues;
+ ret = -ENOMEM;
+ msp = kmalloc(sizeof(*msp), GFP_KERNEL);
+ if (msp == NULL)
+ goto out;
+ memset(msp, 0, sizeof(*msp));
+
+ msp->eth_base = ioremap(res->start, res->end - res->start + 1);
+ if (msp->eth_base == NULL)
+ goto out_free;
+
+ spin_lock_init(&msp->phy_lock);
+ msp->t_clk = (pd != NULL && pd->t_clk != 0) ? pd->t_clk : 133000000;
+
+ platform_set_drvdata(pdev, msp);
+
+ /*
+ * (Re-)program MBUS remapping windows if we are asked to.
+ */
+ if (pd != NULL && pd->dram != NULL)
+ mv643xx_eth_conf_mbus_windows(msp, pd->dram);
+
+ return 0;
+
+out_free:
+ kfree(msp);
+out:
+ return ret;
+}
+
+static int mv643xx_eth_shared_remove(struct platform_device *pdev)
+{
+ struct mv643xx_shared_private *msp = platform_get_drvdata(pdev);
+
+ iounmap(msp->eth_base);
+ kfree(msp);
+
+ return 0;
}
+static struct platform_driver mv643xx_eth_shared_driver = {
+ .probe = mv643xx_eth_shared_probe,
+ .remove = mv643xx_eth_shared_remove,
+ .driver = {
+ .name = MV643XX_ETH_SHARED_NAME,
+ .owner = THIS_MODULE,
+ },
+};
+
/*
- * eth_port_reset - Reset Ethernet port
+ * ethernet_phy_set - Set the ethernet port PHY address.
*
* DESCRIPTION:
- * This routine resets the chip by aborting any SDMA engine activity and
- * clearing the MIB counters. The Receiver and the Transmit unit are in
- * idle state after this command is performed and the port is disabled.
+ * This routine sets the given ethernet port PHY address.
*
* INPUT:
* struct mv643xx_private *mp Ethernet Port.
+ * int phy_addr PHY address.
*
* OUTPUT:
- * Channel activity is halted.
+ * None.
*
* RETURN:
* None.
*
*/
-static void eth_port_reset(struct mv643xx_private *mp)
+static void ethernet_phy_set(struct mv643xx_private *mp, int phy_addr)
{
- unsigned int port_num = mp->port_num;
- unsigned int reg_data;
-
- mv643xx_eth_port_disable_tx(mp);
- mv643xx_eth_port_disable_rx(mp);
-
- /* Clear all MIB counters */
- eth_clear_mib_counters(mp);
+ u32 reg_data;
+ int addr_shift = 5 * mp->port_num;
- /* Reset the Enable bit in the Configuration Register */
- reg_data = rdl(mp, PORT_SERIAL_CONTROL_REG(port_num));
- reg_data &= ~(SERIAL_PORT_ENABLE |
- DO_NOT_FORCE_LINK_FAIL |
- FORCE_LINK_PASS);
- wrl(mp, PORT_SERIAL_CONTROL_REG(port_num), reg_data);
+ reg_data = rdl(mp, PHY_ADDR_REG);
+ reg_data &= ~(0x1f << addr_shift);
+ reg_data |= (phy_addr & 0x1f) << addr_shift;
+ wrl(mp, PHY_ADDR_REG, reg_data);
}
-
/*
- * eth_port_read_smi_reg - Read PHY registers
+ * ethernet_phy_get - Get the ethernet port PHY address.
*
* DESCRIPTION:
- * This routine utilize the SMI interface to interact with the PHY in
- * order to perform PHY register read.
+ * This routine returns the given ethernet port PHY address.
*
* INPUT:
* struct mv643xx_private *mp Ethernet Port.
- * unsigned int phy_reg PHY register address offset.
- * unsigned int *value Register value buffer.
*
* OUTPUT:
- * Write the value of a specified PHY register into given buffer.
+ * None.
*
* RETURN:
- * false if the PHY is busy or read data is not in valid state.
- * true otherwise.
+ * PHY address.
*
*/
-static void eth_port_read_smi_reg(struct mv643xx_private *mp,
- unsigned int phy_reg, unsigned int *value)
+static int ethernet_phy_get(struct mv643xx_private *mp)
{
- void __iomem *smi_reg = mp->shared_smi->eth_base + SMI_REG;
- int phy_addr = ethernet_phy_get(mp);
- unsigned long flags;
- int i;
-
- /* the SMI register is a shared resource */
- spin_lock_irqsave(&mp->shared_smi->phy_lock, flags);
-
- /* wait for the SMI register to become available */
- for (i = 0; readl(smi_reg) & ETH_SMI_BUSY; i++) {
- if (i == PHY_WAIT_ITERATIONS) {
- printk("%s: PHY busy timeout\n", mp->dev->name);
- goto out;
- }
- udelay(PHY_WAIT_MICRO_SECONDS);
- }
-
- writel((phy_addr << 16) | (phy_reg << 21) | ETH_SMI_OPCODE_READ,
- smi_reg);
+ unsigned int reg_data;
- /* now wait for the data to be valid */
- for (i = 0; !(readl(smi_reg) & ETH_SMI_READ_VALID); i++) {
- if (i == PHY_WAIT_ITERATIONS) {
- printk("%s: PHY read timeout\n", mp->dev->name);
- goto out;
- }
- udelay(PHY_WAIT_MICRO_SECONDS);
- }
+ reg_data = rdl(mp, PHY_ADDR_REG);
- *value = readl(smi_reg) & 0xffff;
-out:
- spin_unlock_irqrestore(&mp->shared_smi->phy_lock, flags);
+ return ((reg_data >> (5 * mp->port_num)) & 0x1f);
}
/*
- * eth_port_write_smi_reg - Write to PHY registers
+ * ethernet_phy_detect - Detect whether a phy is present
*
* DESCRIPTION:
- * This routine utilize the SMI interface to interact with the PHY in
- * order to perform writes to PHY registers.
+ * This function tests whether there is a PHY present on
+ * the specified port.
*
* INPUT:
* struct mv643xx_private *mp Ethernet Port.
- * unsigned int phy_reg PHY register address offset.
- * unsigned int value Register value.
*
* OUTPUT:
- * Write the given value to the specified PHY register.
+ * None
*
* RETURN:
- * false if the PHY is busy.
- * true otherwise.
+ * 0 on success
+ * -ENODEV on failure
*
*/
-static void eth_port_write_smi_reg(struct mv643xx_private *mp,
- unsigned int phy_reg, unsigned int value)
+static int ethernet_phy_detect(struct mv643xx_private *mp)
{
- void __iomem *smi_reg = mp->shared_smi->eth_base + SMI_REG;
- int phy_addr = ethernet_phy_get(mp);
- unsigned long flags;
- int i;
+ unsigned int phy_reg_data0;
+ int auto_neg;
- /* the SMI register is a shared resource */
- spin_lock_irqsave(&mp->shared_smi->phy_lock, flags);
+ eth_port_read_smi_reg(mp, 0, &phy_reg_data0);
+ auto_neg = phy_reg_data0 & 0x1000;
+ phy_reg_data0 ^= 0x1000; /* invert auto_neg */
+ eth_port_write_smi_reg(mp, 0, phy_reg_data0);
- /* wait for the SMI register to become available */
- for (i = 0; readl(smi_reg) & ETH_SMI_BUSY; i++) {
- if (i == PHY_WAIT_ITERATIONS) {
- printk("%s: PHY busy timeout\n", mp->dev->name);
- goto out;
- }
- udelay(PHY_WAIT_MICRO_SECONDS);
- }
+ eth_port_read_smi_reg(mp, 0, &phy_reg_data0);
+ if ((phy_reg_data0 & 0x1000) == auto_neg)
+ return -ENODEV; /* change didn't take */
- writel((phy_addr << 16) | (phy_reg << 21) |
- ETH_SMI_OPCODE_WRITE | (value & 0xffff), smi_reg);
-out:
- spin_unlock_irqrestore(&mp->shared_smi->phy_lock, flags);
+ phy_reg_data0 ^= 0x1000;
+ eth_port_write_smi_reg(mp, 0, phy_reg_data0);
+ return 0;
}
-/*
- * Wrappers for MII support library.
- */
-static int mv643xx_mdio_read(struct net_device *dev, int phy_id, int location)
+static void mv643xx_init_ethtool_cmd(struct net_device *dev, int phy_address,
+ int speed, int duplex,
+ struct ethtool_cmd *cmd)
{
struct mv643xx_private *mp = netdev_priv(dev);
- int val;
- eth_port_read_smi_reg(mp, location, &val);
- return val;
-}
+ memset(cmd, 0, sizeof(*cmd));
-static void mv643xx_mdio_write(struct net_device *dev, int phy_id, int location, int val)
-{
- struct mv643xx_private *mp = netdev_priv(dev);
- eth_port_write_smi_reg(mp, location, val);
+ cmd->port = PORT_MII;
+ cmd->transceiver = XCVR_INTERNAL;
+ cmd->phy_address = phy_address;
+
+ if (speed == 0) {
+ cmd->autoneg = AUTONEG_ENABLE;
+ /* mii lib checks, but doesn't use speed on AUTONEG_ENABLE */
+ cmd->speed = SPEED_100;
+ cmd->advertising = ADVERTISED_10baseT_Half |
+ ADVERTISED_10baseT_Full |
+ ADVERTISED_100baseT_Half |
+ ADVERTISED_100baseT_Full;
+ if (mp->mii.supports_gmii)
+ cmd->advertising |= ADVERTISED_1000baseT_Full;
+ } else {
+ cmd->autoneg = AUTONEG_DISABLE;
+ cmd->speed = speed;
+ cmd->duplex = duplex;
+ }
}
-/*
- * eth_port_receive - Get received information from Rx ring.
- *
- * DESCRIPTION:
- * This routine returns the received data to the caller. There is no
- * data copying during routine operation. All information is returned
- * using pointer to packet information struct passed from the caller.
- * If the routine exhausts Rx ring resources then the resource error flag
- * is set.
- *
- * INPUT:
- * struct mv643xx_private *mp Ethernet Port Control srtuct.
- * struct pkt_info *p_pkt_info User packet buffer.
+/*/
+ * mv643xx_eth_probe
*
- * OUTPUT:
- * Rx ring current and used indexes are updated.
+ * First function called after registering the network device.
+ * It's purpose is to initialize the device as an ethernet device,
+ * fill the ethernet device structure with pointers * to functions,
+ * and set the MAC address of the interface
*
- * RETURN:
- * ETH_ERROR in case the routine can not access Rx desc ring.
- * ETH_QUEUE_FULL if Rx ring resources are exhausted.
- * ETH_END_OF_JOB if there is no received data.
- * ETH_OK otherwise.
+ * Input : struct device *
+ * Output : -ENOMEM if failed , 0 if success
*/
-static ETH_FUNC_RET_STATUS eth_port_receive(struct mv643xx_private *mp,
- struct pkt_info *p_pkt_info)
+static int mv643xx_eth_probe(struct platform_device *pdev)
{
- int rx_next_curr_desc, rx_curr_desc, rx_used_desc;
- volatile struct eth_rx_desc *p_rx_desc;
- unsigned int command_status;
- unsigned long flags;
+ struct mv643xx_eth_platform_data *pd;
+ int port_num;
+ struct mv643xx_private *mp;
+ struct net_device *dev;
+ u8 *p;
+ struct resource *res;
+ int err;
+ struct ethtool_cmd cmd;
+ int duplex = DUPLEX_HALF;
+ int speed = 0; /* default to auto-negotiation */
+ DECLARE_MAC_BUF(mac);
- /* Do not process Rx ring in case of Rx ring resource error */
- if (mp->rx_resource_err)
- return ETH_QUEUE_FULL;
+ pd = pdev->dev.platform_data;
+ if (pd == NULL) {
+ printk(KERN_ERR "No mv643xx_eth_platform_data\n");
+ return -ENODEV;
+ }
- spin_lock_irqsave(&mp->lock, flags);
+ if (pd->shared == NULL) {
+ printk(KERN_ERR "No mv643xx_eth_platform_data->shared\n");
+ return -ENODEV;
+ }
- /* Get the Rx Desc ring 'curr and 'used' indexes */
- rx_curr_desc = mp->rx_curr_desc_q;
- rx_used_desc = mp->rx_used_desc_q;
+ dev = alloc_etherdev(sizeof(struct mv643xx_private));
+ if (!dev)
+ return -ENOMEM;
- p_rx_desc = &mp->p_rx_desc_area[rx_curr_desc];
+ platform_set_drvdata(pdev, dev);
- /* The following parameters are used to save readings from memory */
- command_status = p_rx_desc->cmd_sts;
- rmb();
+ mp = netdev_priv(dev);
+ mp->dev = dev;
+#ifdef MV643XX_NAPI
+ netif_napi_add(dev, &mp->napi, mv643xx_poll, 64);
+#endif
- /* Nothing to receive... */
- if (command_status & (ETH_BUFFER_OWNED_BY_DMA)) {
- spin_unlock_irqrestore(&mp->lock, flags);
- return ETH_END_OF_JOB;
- }
+ res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ BUG_ON(!res);
+ dev->irq = res->start;
- p_pkt_info->byte_cnt = (p_rx_desc->byte_cnt) - RX_BUF_OFFSET;
- p_pkt_info->cmd_sts = command_status;
- p_pkt_info->buf_ptr = (p_rx_desc->buf_ptr) + RX_BUF_OFFSET;
- p_pkt_info->return_info = mp->rx_skb[rx_curr_desc];
- p_pkt_info->l4i_chk = p_rx_desc->buf_size;
+ dev->open = mv643xx_eth_open;
+ dev->stop = mv643xx_eth_stop;
+ dev->hard_start_xmit = mv643xx_eth_start_xmit;
+ dev->set_mac_address = mv643xx_eth_set_mac_address;
+ dev->set_multicast_list = mv643xx_eth_set_rx_mode;
+
+ /* No need to Tx Timeout */
+ dev->tx_timeout = mv643xx_eth_tx_timeout;
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ dev->poll_controller = mv643xx_netpoll;
+#endif
+
+ dev->watchdog_timeo = 2 * HZ;
+ dev->base_addr = 0;
+ dev->change_mtu = mv643xx_eth_change_mtu;
+ dev->do_ioctl = mv643xx_eth_do_ioctl;
+ SET_ETHTOOL_OPS(dev, &mv643xx_ethtool_ops);
+#ifdef MV643XX_CHECKSUM_OFFLOAD_TX
+#ifdef MAX_SKB_FRAGS
/*
- * Clean the return info field to indicate that the
- * packet has been moved to the upper layers
+ * Zero copy can only work if we use Discovery II memory. Else, we will
+ * have to map the buffers to ISA memory which is only 16 MB
*/
- mp->rx_skb[rx_curr_desc] = NULL;
+ dev->features = NETIF_F_SG | NETIF_F_IP_CSUM;
+#endif
+#endif
- /* Update current index in data structure */
- rx_next_curr_desc = (rx_curr_desc + 1) % mp->rx_ring_size;
- mp->rx_curr_desc_q = rx_next_curr_desc;
+ /* Configure the timeout task */
+ INIT_WORK(&mp->tx_timeout_task, mv643xx_eth_tx_timeout_task);
- /* Rx descriptors exhausted. Set the Rx ring resource error flag */
- if (rx_next_curr_desc == rx_used_desc)
- mp->rx_resource_err = 1;
+ spin_lock_init(&mp->lock);
- spin_unlock_irqrestore(&mp->lock, flags);
+ mp->shared = platform_get_drvdata(pd->shared);
+ port_num = mp->port_num = pd->port_number;
- return ETH_OK;
-}
+ if (mp->shared->win_protect)
+ wrl(mp, WINDOW_PROTECT(port_num), mp->shared->win_protect);
-/*
- * eth_rx_return_buff - Returns a Rx buffer back to the Rx ring.
- *
- * DESCRIPTION:
- * This routine returns a Rx buffer back to the Rx ring. It retrieves the
- * next 'used' descriptor and attached the returned buffer to it.
- * In case the Rx ring was in "resource error" condition, where there are
- * no available Rx resources, the function resets the resource error flag.
- *
- * INPUT:
- * struct mv643xx_private *mp Ethernet Port Control srtuct.
- * struct pkt_info *p_pkt_info Information on returned buffer.
- *
- * OUTPUT:
- * New available Rx resource in Rx descriptor ring.
- *
- * RETURN:
- * ETH_ERROR in case the routine can not access Rx desc ring.
- * ETH_OK otherwise.
- */
-static ETH_FUNC_RET_STATUS eth_rx_return_buff(struct mv643xx_private *mp,
- struct pkt_info *p_pkt_info)
-{
- int used_rx_desc; /* Where to return Rx resource */
- volatile struct eth_rx_desc *p_used_rx_desc;
- unsigned long flags;
+ mp->shared_smi = mp->shared;
+ if (pd->shared_smi != NULL)
+ mp->shared_smi = platform_get_drvdata(pd->shared_smi);
+
+ /* set default config values */
+ eth_port_uc_addr_get(mp, dev->dev_addr);
+ mp->rx_ring_size = PORT_DEFAULT_RECEIVE_QUEUE_SIZE;
+ mp->tx_ring_size = PORT_DEFAULT_TRANSMIT_QUEUE_SIZE;
+
+ if (is_valid_ether_addr(pd->mac_addr))
+ memcpy(dev->dev_addr, pd->mac_addr, 6);
+
+ if (pd->phy_addr || pd->force_phy_addr)
+ ethernet_phy_set(mp, pd->phy_addr);
- spin_lock_irqsave(&mp->lock, flags);
+ if (pd->rx_queue_size)
+ mp->rx_ring_size = pd->rx_queue_size;
- /* Get 'used' Rx descriptor */
- used_rx_desc = mp->rx_used_desc_q;
- p_used_rx_desc = &mp->p_rx_desc_area[used_rx_desc];
+ if (pd->tx_queue_size)
+ mp->tx_ring_size = pd->tx_queue_size;
- p_used_rx_desc->buf_ptr = p_pkt_info->buf_ptr;
- p_used_rx_desc->buf_size = p_pkt_info->byte_cnt;
- mp->rx_skb[used_rx_desc] = p_pkt_info->return_info;
+ if (pd->tx_sram_size) {
+ mp->tx_sram_size = pd->tx_sram_size;
+ mp->tx_sram_addr = pd->tx_sram_addr;
+ }
- /* Flush the write pipe */
+ if (pd->rx_sram_size) {
+ mp->rx_sram_size = pd->rx_sram_size;
+ mp->rx_sram_addr = pd->rx_sram_addr;
+ }
- /* Return the descriptor to DMA ownership */
- wmb();
- p_used_rx_desc->cmd_sts =
- ETH_BUFFER_OWNED_BY_DMA | ETH_RX_ENABLE_INTERRUPT;
- wmb();
+ duplex = pd->duplex;
+ speed = pd->speed;
- /* Move the used descriptor pointer to the next descriptor */
- mp->rx_used_desc_q = (used_rx_desc + 1) % mp->rx_ring_size;
+ /* Hook up MII support for ethtool */
+ mp->mii.dev = dev;
+ mp->mii.mdio_read = mv643xx_mdio_read;
+ mp->mii.mdio_write = mv643xx_mdio_write;
+ mp->mii.phy_id = ethernet_phy_get(mp);
+ mp->mii.phy_id_mask = 0x3f;
+ mp->mii.reg_num_mask = 0x1f;
- /* Any Rx return cancels the Rx resource error status */
- mp->rx_resource_err = 0;
+ err = ethernet_phy_detect(mp);
+ if (err) {
+ pr_debug("%s: No PHY detected at addr %d\n",
+ dev->name, ethernet_phy_get(mp));
+ goto out;
+ }
- spin_unlock_irqrestore(&mp->lock, flags);
+ ethernet_phy_reset(mp);
+ mp->mii.supports_gmii = mii_check_gmii_support(&mp->mii);
+ mv643xx_init_ethtool_cmd(dev, mp->mii.phy_id, speed, duplex, &cmd);
+ mv643xx_eth_update_pscr(dev, &cmd);
+ mv643xx_set_settings(dev, &cmd);
- return ETH_OK;
-}
+ SET_NETDEV_DEV(dev, &pdev->dev);
+ err = register_netdev(dev);
+ if (err)
+ goto out;
-/************* Begin ethtool support *************************/
+ p = dev->dev_addr;
+ printk(KERN_NOTICE
+ "%s: port %d with MAC address %s\n",
+ dev->name, port_num, print_mac(mac, p));
-struct mv643xx_stats {
- char stat_string[ETH_GSTRING_LEN];
- int sizeof_stat;
- int stat_offset;
-};
+ if (dev->features & NETIF_F_SG)
+ printk(KERN_NOTICE "%s: Scatter Gather Enabled\n", dev->name);
-#define MV643XX_STAT(m) FIELD_SIZEOF(struct mv643xx_private, m), \
- offsetof(struct mv643xx_private, m)
+ if (dev->features & NETIF_F_IP_CSUM)
+ printk(KERN_NOTICE "%s: TX TCP/IP Checksumming Supported\n",
+ dev->name);
-static const struct mv643xx_stats mv643xx_gstrings_stats[] = {
- { "rx_packets", MV643XX_STAT(stats.rx_packets) },
- { "tx_packets", MV643XX_STAT(stats.tx_packets) },
- { "rx_bytes", MV643XX_STAT(stats.rx_bytes) },
- { "tx_bytes", MV643XX_STAT(stats.tx_bytes) },
- { "rx_errors", MV643XX_STAT(stats.rx_errors) },
- { "tx_errors", MV643XX_STAT(stats.tx_errors) },
- { "rx_dropped", MV643XX_STAT(stats.rx_dropped) },
- { "tx_dropped", MV643XX_STAT(stats.tx_dropped) },
- { "good_octets_received", MV643XX_STAT(mib_counters.good_octets_received) },
- { "bad_octets_received", MV643XX_STAT(mib_counters.bad_octets_received) },
- { "internal_mac_transmit_err", MV643XX_STAT(mib_counters.internal_mac_transmit_err) },
- { "good_frames_received", MV643XX_STAT(mib_counters.good_frames_received) },
- { "bad_frames_received", MV643XX_STAT(mib_counters.bad_frames_received) },
- { "broadcast_frames_received", MV643XX_STAT(mib_counters.broadcast_frames_received) },
- { "multicast_frames_received", MV643XX_STAT(mib_counters.multicast_frames_received) },
- { "frames_64_octets", MV643XX_STAT(mib_counters.frames_64_octets) },
- { "frames_65_to_127_octets", MV643XX_STAT(mib_counters.frames_65_to_127_octets) },
- { "frames_128_to_255_octets", MV643XX_STAT(mib_counters.frames_128_to_255_octets) },
- { "frames_256_to_511_octets", MV643XX_STAT(mib_counters.frames_256_to_511_octets) },
- { "frames_512_to_1023_octets", MV643XX_STAT(mib_counters.frames_512_to_1023_octets) },
- { "frames_1024_to_max_octets", MV643XX_STAT(mib_counters.frames_1024_to_max_octets) },
- { "good_octets_sent", MV643XX_STAT(mib_counters.good_octets_sent) },
- { "good_frames_sent", MV643XX_STAT(mib_counters.good_frames_sent) },
- { "excessive_collision", MV643XX_STAT(mib_counters.excessive_collision) },
- { "multicast_frames_sent", MV643XX_STAT(mib_counters.multicast_frames_sent) },
- { "broadcast_frames_sent", MV643XX_STAT(mib_counters.broadcast_frames_sent) },
- { "unrec_mac_control_received", MV643XX_STAT(mib_counters.unrec_mac_control_received) },
- { "fc_sent", MV643XX_STAT(mib_counters.fc_sent) },
- { "good_fc_received", MV643XX_STAT(mib_counters.good_fc_received) },
- { "bad_fc_received", MV643XX_STAT(mib_counters.bad_fc_received) },
- { "undersize_received", MV643XX_STAT(mib_counters.undersize_received) },
- { "fragments_received", MV643XX_STAT(mib_counters.fragments_received) },
- { "oversize_received", MV643XX_STAT(mib_counters.oversize_received) },
- { "jabber_received", MV643XX_STAT(mib_counters.jabber_received) },
- { "mac_receive_error", MV643XX_STAT(mib_counters.mac_receive_error) },
- { "bad_crc_event", MV643XX_STAT(mib_counters.bad_crc_event) },
- { "collision", MV643XX_STAT(mib_counters.collision) },
- { "late_collision", MV643XX_STAT(mib_counters.late_collision) },
-};
+#ifdef MV643XX_CHECKSUM_OFFLOAD_TX
+ printk(KERN_NOTICE "%s: RX TCP/UDP Checksum Offload ON \n", dev->name);
+#endif
-#define MV643XX_STATS_LEN ARRAY_SIZE(mv643xx_gstrings_stats)
+#ifdef MV643XX_COAL
+ printk(KERN_NOTICE "%s: TX and RX Interrupt Coalescing ON \n",
+ dev->name);
+#endif
-static void mv643xx_get_drvinfo(struct net_device *netdev,
- struct ethtool_drvinfo *drvinfo)
-{
- strncpy(drvinfo->driver, mv643xx_driver_name, 32);
- strncpy(drvinfo->version, mv643xx_driver_version, 32);
- strncpy(drvinfo->fw_version, "N/A", 32);
- strncpy(drvinfo->bus_info, "mv643xx", 32);
- drvinfo->n_stats = MV643XX_STATS_LEN;
-}
+#ifdef MV643XX_NAPI
+ printk(KERN_NOTICE "%s: RX NAPI Enabled \n", dev->name);
+#endif
-static int mv643xx_get_sset_count(struct net_device *netdev, int sset)
-{
- switch (sset) {
- case ETH_SS_STATS:
- return MV643XX_STATS_LEN;
- default:
- return -EOPNOTSUPP;
- }
-}
+ if (mp->tx_sram_size > 0)
+ printk(KERN_NOTICE "%s: Using SRAM\n", dev->name);
-static void mv643xx_get_ethtool_stats(struct net_device *netdev,
- struct ethtool_stats *stats, uint64_t *data)
-{
- struct mv643xx_private *mp = netdev->priv;
- int i;
+ return 0;
- eth_update_mib_counters(mp);
+out:
+ free_netdev(dev);
- for (i = 0; i < MV643XX_STATS_LEN; i++) {
- char *p = (char *)mp+mv643xx_gstrings_stats[i].stat_offset;
- data[i] = (mv643xx_gstrings_stats[i].sizeof_stat ==
- sizeof(uint64_t)) ? *(uint64_t *)p : *(uint32_t *)p;
- }
+ return err;
}
-static void mv643xx_get_strings(struct net_device *netdev, uint32_t stringset,
- uint8_t *data)
+static int mv643xx_eth_remove(struct platform_device *pdev)
{
- int i;
+ struct net_device *dev = platform_get_drvdata(pdev);
- switch(stringset) {
- case ETH_SS_STATS:
- for (i=0; i < MV643XX_STATS_LEN; i++) {
- memcpy(data + i * ETH_GSTRING_LEN,
- mv643xx_gstrings_stats[i].stat_string,
- ETH_GSTRING_LEN);
- }
- break;
- }
+ unregister_netdev(dev);
+ flush_scheduled_work();
+
+ free_netdev(dev);
+ platform_set_drvdata(pdev, NULL);
+ return 0;
}
-static u32 mv643xx_eth_get_link(struct net_device *dev)
+static void mv643xx_eth_shutdown(struct platform_device *pdev)
{
+ struct net_device *dev = platform_get_drvdata(pdev);
struct mv643xx_private *mp = netdev_priv(dev);
+ unsigned int port_num = mp->port_num;
- return mii_link_ok(&mp->mii);
+ /* Mask all interrupts on ethernet port */
+ wrl(mp, INTERRUPT_MASK_REG(port_num), 0);
+ rdl(mp, INTERRUPT_MASK_REG(port_num));
+
+ eth_port_reset(mp);
}
-static int mv643xx_eth_nway_restart(struct net_device *dev)
+static struct platform_driver mv643xx_eth_driver = {
+ .probe = mv643xx_eth_probe,
+ .remove = mv643xx_eth_remove,
+ .shutdown = mv643xx_eth_shutdown,
+ .driver = {
+ .name = MV643XX_ETH_NAME,
+ .owner = THIS_MODULE,
+ },
+};
+
+/*
+ * mv643xx_init_module
+ *
+ * Registers the network drivers into the Linux kernel
+ *
+ * Input : N/A
+ *
+ * Output : N/A
+ */
+static int __init mv643xx_init_module(void)
{
- struct mv643xx_private *mp = netdev_priv(dev);
+ int rc;
- return mii_nway_restart(&mp->mii);
+ rc = platform_driver_register(&mv643xx_eth_shared_driver);
+ if (!rc) {
+ rc = platform_driver_register(&mv643xx_eth_driver);
+ if (rc)
+ platform_driver_unregister(&mv643xx_eth_shared_driver);
+ }
+ return rc;
}
-static int mv643xx_eth_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+/*
+ * mv643xx_cleanup_module
+ *
+ * Registers the network drivers into the Linux kernel
+ *
+ * Input : N/A
+ *
+ * Output : N/A
+ */
+static void __exit mv643xx_cleanup_module(void)
{
- struct mv643xx_private *mp = netdev_priv(dev);
-
- return generic_mii_ioctl(&mp->mii, if_mii(ifr), cmd, NULL);
+ platform_driver_unregister(&mv643xx_eth_driver);
+ platform_driver_unregister(&mv643xx_eth_shared_driver);
}
-static const struct ethtool_ops mv643xx_ethtool_ops = {
- .get_settings = mv643xx_get_settings,
- .set_settings = mv643xx_set_settings,
- .get_drvinfo = mv643xx_get_drvinfo,
- .get_link = mv643xx_eth_get_link,
- .set_sg = ethtool_op_set_sg,
- .get_sset_count = mv643xx_get_sset_count,
- .get_ethtool_stats = mv643xx_get_ethtool_stats,
- .get_strings = mv643xx_get_strings,
- .nway_reset = mv643xx_eth_nway_restart,
-};
+module_init(mv643xx_init_module);
+module_exit(mv643xx_cleanup_module);
-/************* End ethtool support *************************/
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR( "Rabeeh Khoury, Assaf Hoffman, Matthew Dharm, Manish Lachwani"
+ " and Dale Farnsworth");
+MODULE_DESCRIPTION("Ethernet driver for Marvell MV643XX");
+MODULE_ALIAS("platform:" MV643XX_ETH_NAME);
+MODULE_ALIAS("platform:" MV643XX_ETH_SHARED_NAME);
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