* Copyright (C) 2002 rabeeh@galileo.co.il
*
* Copyright (C) 2003 PMC-Sierra, Inc.,
- * written by Manish Lachwani (lachwani@pmc-sierra.com)
+ * written by Manish Lachwani
*
* Copyright (C) 2003 Ralf Baechle <ralf@linux-mips.org>
*
- * Copyright (C) 2004-2005 MontaVista Software, Inc.
+ * Copyright (C) 2004-2006 MontaVista Software, Inc.
* Dale Farnsworth <dale@farnsworth.org>
*
* Copyright (C) 2004 Steven J. Hill <sjhill1@rockwellcollins.com>
*/
#include <linux/init.h>
#include <linux/dma-mapping.h>
+#include <linux/in.h>
+#include <linux/ip.h>
#include <linux/tcp.h>
#include <linux/udp.h>
#include <linux/etherdevice.h>
#include <linux/bitops.h>
#include <linux/delay.h>
#include <linux/ethtool.h>
+#include <linux/platform_device.h>
+
#include <asm/io.h>
#include <asm/types.h>
#include <asm/pgtable.h>
#include <asm/delay.h>
#include "mv643xx_eth.h"
-/*
- * The first part is the high level driver of the gigE ethernet ports.
- */
-
-/* Constants */
-#define VLAN_HLEN 4
-#define FCS_LEN 4
-#define WRAP NET_IP_ALIGN + ETH_HLEN + VLAN_HLEN + FCS_LEN
-#define RX_SKB_SIZE ((dev->mtu + WRAP + 7) & ~0x7)
-
-#define INT_CAUSE_UNMASK_ALL 0x0007ffff
-#define INT_CAUSE_UNMASK_ALL_EXT 0x0011ffff
-#ifdef MV643XX_RX_QUEUE_FILL_ON_TASK
-#define INT_CAUSE_MASK_ALL 0x00000000
-#define INT_CAUSE_CHECK_BITS INT_CAUSE_UNMASK_ALL
-#define INT_CAUSE_CHECK_BITS_EXT INT_CAUSE_UNMASK_ALL_EXT
-#endif
-
-#ifdef MV643XX_CHECKSUM_OFFLOAD_TX
-#define MAX_DESCS_PER_SKB (MAX_SKB_FRAGS + 1)
-#else
-#define MAX_DESCS_PER_SKB 1
-#endif
-
-#define PHY_WAIT_ITERATIONS 1000 /* 1000 iterations * 10uS = 10mS max */
-#define PHY_WAIT_MICRO_SECONDS 10
-
/* Static function declarations */
-static int eth_port_link_is_up(unsigned int eth_port_num);
static void eth_port_uc_addr_get(struct net_device *dev,
unsigned char *MacAddr);
-static int mv643xx_eth_real_open(struct net_device *);
-static int mv643xx_eth_real_stop(struct net_device *);
+static void eth_port_set_multicast_list(struct net_device *);
+static void mv643xx_eth_port_enable_tx(unsigned int port_num,
+ unsigned int queues);
+static void mv643xx_eth_port_enable_rx(unsigned int port_num,
+ unsigned int queues);
+static unsigned int mv643xx_eth_port_disable_tx(unsigned int port_num);
+static unsigned int mv643xx_eth_port_disable_rx(unsigned int port_num);
+static int mv643xx_eth_open(struct net_device *);
+static int mv643xx_eth_stop(struct net_device *);
static int mv643xx_eth_change_mtu(struct net_device *, int);
static struct net_device_stats *mv643xx_eth_get_stats(struct net_device *);
static void eth_port_init_mac_tables(unsigned int eth_port_num);
#ifdef MV643XX_NAPI
static int mv643xx_poll(struct net_device *dev, int *budget);
#endif
+static int ethernet_phy_get(unsigned int eth_port_num);
static void ethernet_phy_set(unsigned int eth_port_num, int phy_addr);
static int ethernet_phy_detect(unsigned int eth_port_num);
-static struct ethtool_ops mv643xx_ethtool_ops;
+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;
static char mv643xx_driver_name[] = "mv643xx_eth";
static char mv643xx_driver_version[] = "1.0";
static void __iomem *mv643xx_eth_shared_base;
/* used to protect MV643XX_ETH_SMI_REG, which is shared across ports */
-static spinlock_t mv643xx_eth_phy_lock = SPIN_LOCK_UNLOCKED;
+static DEFINE_SPINLOCK(mv643xx_eth_phy_lock);
static inline u32 mv_read(int offset)
{
*/
static int mv643xx_eth_change_mtu(struct net_device *dev, int new_mtu)
{
- struct mv643xx_private *mp = netdev_priv(dev);
- unsigned long flags;
-
- spin_lock_irqsave(&mp->lock, flags);
-
- if ((new_mtu > 9500) || (new_mtu < 64)) {
- spin_unlock_irqrestore(&mp->lock, flags);
+ if ((new_mtu > 9500) || (new_mtu < 64))
return -EINVAL;
- }
dev->mtu = new_mtu;
/*
* to memory is full, which might fail the open function.
*/
if (netif_running(dev)) {
- if (mv643xx_eth_real_stop(dev))
- printk(KERN_ERR
- "%s: Fatal error on stopping device\n",
- dev->name);
- if (mv643xx_eth_real_open(dev))
+ mv643xx_eth_stop(dev);
+ if (mv643xx_eth_open(dev))
printk(KERN_ERR
"%s: Fatal error on opening device\n",
dev->name);
}
- spin_unlock_irqrestore(&mp->lock, flags);
return 0;
}
/*
- * mv643xx_eth_rx_task
+ * mv643xx_eth_rx_refill_descs
*
* Fills / refills RX queue on a certain gigabit ethernet port
*
* Input : pointer to ethernet interface network device structure
* Output : N/A
*/
-static void mv643xx_eth_rx_task(void *data)
+static void mv643xx_eth_rx_refill_descs(struct net_device *dev)
{
- struct net_device *dev = (struct net_device *)data;
struct mv643xx_private *mp = netdev_priv(dev);
struct pkt_info pkt_info;
struct sk_buff *skb;
+ int unaligned;
- if (test_and_set_bit(0, &mp->rx_task_busy))
- panic("%s: Error in test_set_bit / clear_bit", dev->name);
-
- while (mp->rx_ring_skbs < (mp->rx_ring_size - 5)) {
- skb = dev_alloc_skb(RX_SKB_SIZE);
+ while (mp->rx_desc_count < mp->rx_ring_size) {
+ skb = dev_alloc_skb(ETH_RX_SKB_SIZE + dma_get_cache_alignment());
if (!skb)
break;
- mp->rx_ring_skbs++;
+ mp->rx_desc_count++;
+ unaligned = (u32)skb->data & (dma_get_cache_alignment() - 1);
+ if (unaligned)
+ skb_reserve(skb, dma_get_cache_alignment() - unaligned);
pkt_info.cmd_sts = ETH_RX_ENABLE_INTERRUPT;
- pkt_info.byte_cnt = RX_SKB_SIZE;
- pkt_info.buf_ptr = dma_map_single(NULL, skb->data, RX_SKB_SIZE,
- DMA_FROM_DEVICE);
+ pkt_info.byte_cnt = ETH_RX_SKB_SIZE;
+ pkt_info.buf_ptr = dma_map_single(NULL, skb->data,
+ ETH_RX_SKB_SIZE, DMA_FROM_DEVICE);
pkt_info.return_info = skb;
if (eth_rx_return_buff(mp, &pkt_info) != ETH_OK) {
printk(KERN_ERR
"%s: Error allocating RX Ring\n", dev->name);
break;
}
- skb_reserve(skb, 2);
+ skb_reserve(skb, ETH_HW_IP_ALIGN);
}
- clear_bit(0, &mp->rx_task_busy);
/*
* If RX ring is empty of SKB, set a timer to try allocating
- * again in a later time .
+ * again at a later time.
*/
- if ((mp->rx_ring_skbs == 0) && (mp->rx_timer_flag == 0)) {
+ if (mp->rx_desc_count == 0) {
printk(KERN_INFO "%s: Rx ring is empty\n", dev->name);
- /* After 100mSec */
- mp->timeout.expires = jiffies + (HZ / 10);
+ mp->timeout.expires = jiffies + (HZ / 10); /* 100 mSec */
add_timer(&mp->timeout);
- mp->rx_timer_flag = 1;
- }
-#ifdef MV643XX_RX_QUEUE_FILL_ON_TASK
- else {
- /* Return interrupts */
- mv_write(MV643XX_ETH_INTERRUPT_MASK_REG(mp->port_num),
- INT_CAUSE_UNMASK_ALL);
}
-#endif
}
/*
- * mv643xx_eth_rx_task_timer_wrapper
+ * mv643xx_eth_rx_refill_descs_timer_wrapper
*
* Timer routine to wake up RX queue filling task. This function is
* used only in case the RX queue is empty, and all alloc_skb has
* Input : pointer to ethernet interface network device structure
* Output : N/A
*/
-static void mv643xx_eth_rx_task_timer_wrapper(unsigned long data)
+static inline void mv643xx_eth_rx_refill_descs_timer_wrapper(unsigned long data)
{
- struct net_device *dev = (struct net_device *)data;
- struct mv643xx_private *mp = netdev_priv(dev);
-
- mp->rx_timer_flag = 0;
- mv643xx_eth_rx_task((void *)data);
+ mv643xx_eth_rx_refill_descs((struct net_device *)data);
}
/*
unsigned int port_num = mp->port_num;
eth_port_init_mac_tables(port_num);
- memcpy(mp->port_mac_addr, dev->dev_addr, 6);
- eth_port_uc_addr_set(port_num, mp->port_mac_addr);
+ eth_port_uc_addr_set(port_num, dev->dev_addr);
}
/*
struct mv643xx_private *mp = netdev_priv(dev);
u32 config_reg;
- config_reg = ethernet_get_config_reg(mp->port_num);
+ config_reg = mv_read(MV643XX_ETH_PORT_CONFIG_REG(mp->port_num));
if (dev->flags & IFF_PROMISC)
config_reg |= (u32) MV643XX_ETH_UNICAST_PROMISCUOUS_MODE;
else
config_reg &= ~(u32) MV643XX_ETH_UNICAST_PROMISCUOUS_MODE;
- ethernet_set_config_reg(mp->port_num, config_reg);
+ mv_write(MV643XX_ETH_PORT_CONFIG_REG(mp->port_num), config_reg);
+
+ eth_port_set_multicast_list(dev);
}
/*
*
* Actual routine to reset the adapter when a timeout on Tx has occurred
*/
-static void mv643xx_eth_tx_timeout_task(struct net_device *dev)
+static void mv643xx_eth_tx_timeout_task(struct work_struct *ugly)
{
- struct mv643xx_private *mp = netdev_priv(dev);
+ struct mv643xx_private *mp = container_of(ugly, struct mv643xx_private,
+ tx_timeout_task);
+ struct net_device *dev = mp->mii.dev; /* yuck */
+
+ if (!netif_running(dev))
+ return;
+
+ netif_stop_queue(dev);
- netif_device_detach(dev);
eth_port_reset(mp->port_num);
- eth_port_start(mp);
- netif_device_attach(dev);
+ 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_queue
- *
- * Input : dev - a pointer to the required interface
+/**
+ * mv643xx_eth_free_tx_descs - Free the tx desc data for completed descriptors
*
- * Output : 0 if was able to release skb , nonzero otherwise
+ * If force is non-zero, frees uncompleted descriptors as well
*/
-static int mv643xx_eth_free_tx_queue(struct net_device *dev,
- unsigned int eth_int_cause_ext)
+int mv643xx_eth_free_tx_descs(struct net_device *dev, int force)
{
struct mv643xx_private *mp = netdev_priv(dev);
- struct net_device_stats *stats = &mp->stats;
- struct pkt_info pkt_info;
- int released = 1;
+ 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;
+ }
- if (!(eth_int_cause_ext & (BIT0 | BIT8)))
- return released;
+ tx_index = mp->tx_used_desc_q;
+ desc = &mp->p_tx_desc_area[tx_index];
+ cmd_sts = desc->cmd_sts;
- spin_lock(&mp->lock);
+ 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--;
- /* Check only queue 0 */
- while (eth_tx_return_desc(mp, &pkt_info) == ETH_OK) {
- if (pkt_info.cmd_sts & BIT0) {
+ 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);
- stats->tx_errors++;
+ mp->stats.tx_errors++;
}
- /*
- * If return_info is different than 0, release the skb.
- * The case where return_info is not 0 is only in case
- * when transmitted a scatter/gather packet, where only
- * last skb releases the whole chain.
- */
- if (pkt_info.return_info) {
- if (skb_shinfo(pkt_info.return_info)->nr_frags)
- dma_unmap_page(NULL, pkt_info.buf_ptr,
- pkt_info.byte_cnt,
- DMA_TO_DEVICE);
- else
- dma_unmap_single(NULL, pkt_info.buf_ptr,
- pkt_info.byte_cnt,
- DMA_TO_DEVICE);
+ spin_unlock_irqrestore(&mp->lock, flags);
- dev_kfree_skb_irq(pkt_info.return_info);
- released = 0;
+ 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);
- /*
- * Decrement the number of outstanding skbs counter on
- * the TX queue.
- */
- if (mp->tx_ring_skbs == 0)
- panic("ERROR - TX outstanding SKBs"
- " counter is corrupted");
- mp->tx_ring_skbs--;
- } else
- dma_unmap_page(NULL, pkt_info.buf_ptr,
- pkt_info.byte_cnt, DMA_TO_DEVICE);
- }
+ if (skb)
+ dev_kfree_skb_irq(skb);
- spin_unlock(&mp->lock);
+ released = 1;
+ }
return released;
}
+static void mv643xx_eth_free_completed_tx_descs(struct net_device *dev)
+{
+ struct mv643xx_private *mp = netdev_priv(dev);
+
+ if (mv643xx_eth_free_tx_descs(dev, 0) &&
+ mp->tx_ring_size - mp->tx_desc_count >= MAX_DESCS_PER_SKB)
+ netif_wake_queue(dev);
+}
+
+static void mv643xx_eth_free_all_tx_descs(struct net_device *dev)
+{
+ mv643xx_eth_free_tx_descs(dev, 1);
+}
+
/*
* mv643xx_eth_receive
*
*
* Output : number of served packets
*/
-#ifdef MV643XX_NAPI
static int mv643xx_eth_receive_queue(struct net_device *dev, int budget)
-#else
-static int mv643xx_eth_receive_queue(struct net_device *dev)
-#endif
{
struct mv643xx_private *mp = netdev_priv(dev);
struct net_device_stats *stats = &mp->stats;
struct sk_buff *skb;
struct pkt_info pkt_info;
-#ifdef MV643XX_NAPI
- while (eth_port_receive(mp, &pkt_info) == ETH_OK && budget > 0) {
-#else
- while (eth_port_receive(mp, &pkt_info) == ETH_OK) {
-#endif
- mp->rx_ring_skbs--;
+ while (budget-- > 0 && eth_port_receive(mp, &pkt_info) == ETH_OK) {
+ dma_unmap_single(NULL, pkt_info.buf_ptr, ETH_RX_SKB_SIZE,
+ DMA_FROM_DEVICE);
+ mp->rx_desc_count--;
received_packets++;
-#ifdef MV643XX_NAPI
- budget--;
-#endif
- /* Update statistics. Note byte count includes 4 byte CRC count */
+
+ /*
+ * Update statistics.
+ * Note byte count includes 4 byte CRC count
+ */
stats->rx_packets++;
stats->rx_bytes += pkt_info.byte_cnt;
skb = pkt_info.return_info;
* received packet
*/
skb_put(skb, pkt_info.byte_cnt - 4);
- skb->dev = dev;
if (pkt_info.cmd_sts & ETH_LAYER_4_CHECKSUM_OK) {
skb->ip_summed = CHECKSUM_UNNECESSARY;
netif_rx(skb);
#endif
}
+ dev->last_rx = jiffies;
}
+ mv643xx_eth_rx_refill_descs(dev); /* Fill RX ring with skb's */
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)
+{
+ struct mv643xx_private *mp = netdev_priv(dev);
+ int port_num = mp->port_num;
+ u32 o_pscr, n_pscr;
+ unsigned int queues;
+
+ o_pscr = mv_read(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num));
+ n_pscr = o_pscr;
+
+ /* clear speed, duplex and rx buffer size fields */
+ n_pscr &= ~(MV643XX_ETH_SET_MII_SPEED_TO_100 |
+ MV643XX_ETH_SET_GMII_SPEED_TO_1000 |
+ MV643XX_ETH_SET_FULL_DUPLEX_MODE |
+ MV643XX_ETH_MAX_RX_PACKET_MASK);
+
+ if (ecmd->duplex == DUPLEX_FULL)
+ n_pscr |= MV643XX_ETH_SET_FULL_DUPLEX_MODE;
+
+ if (ecmd->speed == SPEED_1000)
+ n_pscr |= MV643XX_ETH_SET_GMII_SPEED_TO_1000 |
+ MV643XX_ETH_MAX_RX_PACKET_9700BYTE;
+ else {
+ if (ecmd->speed == SPEED_100)
+ n_pscr |= MV643XX_ETH_SET_MII_SPEED_TO_100;
+ n_pscr |= MV643XX_ETH_MAX_RX_PACKET_1522BYTE;
+ }
+
+ if (n_pscr != o_pscr) {
+ if ((o_pscr & MV643XX_ETH_SERIAL_PORT_ENABLE) == 0)
+ mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num),
+ n_pscr);
+ else {
+ queues = mv643xx_eth_port_disable_tx(port_num);
+
+ o_pscr &= ~MV643XX_ETH_SERIAL_PORT_ENABLE;
+ mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num),
+ o_pscr);
+ mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num),
+ n_pscr);
+ mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num),
+ n_pscr);
+ if (queues)
+ mv643xx_eth_port_enable_tx(port_num, queues);
+ }
+ }
+}
+
/*
* mv643xx_eth_int_handler
*
* Output : N/A
*/
-static irqreturn_t mv643xx_eth_int_handler(int irq, void *dev_id,
- struct pt_regs *regs)
+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);
/* Read interrupt cause registers */
eth_int_cause = mv_read(MV643XX_ETH_INTERRUPT_CAUSE_REG(port_num)) &
- INT_CAUSE_UNMASK_ALL;
-
- if (eth_int_cause & BIT1)
+ ETH_INT_UNMASK_ALL;
+ if (eth_int_cause & ETH_INT_CAUSE_EXT) {
eth_int_cause_ext = mv_read(
MV643XX_ETH_INTERRUPT_CAUSE_EXTEND_REG(port_num)) &
- INT_CAUSE_UNMASK_ALL_EXT;
+ ETH_INT_UNMASK_ALL_EXT;
+ mv_write(MV643XX_ETH_INTERRUPT_CAUSE_EXTEND_REG(port_num),
+ ~eth_int_cause_ext);
+ }
-#ifdef MV643XX_NAPI
- if (!(eth_int_cause & 0x0007fffd)) {
- /* Dont ack the Rx interrupt */
-#endif
- /*
- * Clear specific ethernet port intrerrupt registers by
- * acknowleding relevant bits.
- */
- mv_write(MV643XX_ETH_INTERRUPT_CAUSE_REG(port_num),
- ~eth_int_cause);
- if (eth_int_cause_ext != 0x0)
- mv_write(MV643XX_ETH_INTERRUPT_CAUSE_EXTEND_REG
- (port_num), ~eth_int_cause_ext);
-
- /* UDP change : We may need this */
- if ((eth_int_cause_ext & 0x0000ffff) &&
- (mv643xx_eth_free_tx_queue(dev, eth_int_cause_ext) == 0) &&
- (mp->tx_ring_size > mp->tx_ring_skbs + MAX_DESCS_PER_SKB))
- netif_wake_queue(dev);
-#ifdef MV643XX_NAPI
- } else {
- if (netif_rx_schedule_prep(dev)) {
- /* Mask all the interrupts */
- mv_write(MV643XX_ETH_INTERRUPT_MASK_REG(port_num), 0);
- mv_write(MV643XX_ETH_INTERRUPT_EXTEND_MASK_REG
- (port_num), 0);
- __netif_rx_schedule(dev);
+ /* PHY status changed */
+ if (eth_int_cause_ext & ETH_INT_CAUSE_PHY) {
+ struct ethtool_cmd cmd;
+
+ if (mii_link_ok(&mp->mii)) {
+ mii_ethtool_gset(&mp->mii, &cmd);
+ mv643xx_eth_update_pscr(dev, &cmd);
+ mv643xx_eth_port_enable_tx(port_num,
+ 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);
}
-#else
- if (eth_int_cause & (BIT2 | BIT11))
- mv643xx_eth_receive_queue(dev, 0);
+ }
- /*
- * After forwarded received packets to upper layer, add a task
- * in an interrupts enabled context that refills the RX ring
- * with skb's.
- */
-#ifdef MV643XX_RX_QUEUE_FILL_ON_TASK
- /* Unmask all interrupts on ethernet port */
+#ifdef MV643XX_NAPI
+ if (eth_int_cause & ETH_INT_CAUSE_RX) {
+ /* schedule the NAPI poll routine to maintain port */
mv_write(MV643XX_ETH_INTERRUPT_MASK_REG(port_num),
- INT_CAUSE_MASK_ALL);
- queue_task(&mp->rx_task, &tq_immediate);
- mark_bh(IMMEDIATE_BH);
+ ETH_INT_MASK_ALL);
+ /* wait for previous write to complete */
+ mv_read(MV643XX_ETH_INTERRUPT_MASK_REG(port_num));
+
+ netif_rx_schedule(dev);
+ }
#else
- mp->rx_task.func(dev);
+ if (eth_int_cause & ETH_INT_CAUSE_RX)
+ mv643xx_eth_receive_queue(dev, INT_MAX);
#endif
-#endif
- }
- /* PHY status changed */
- if (eth_int_cause_ext & (BIT16 | BIT20)) {
- if (eth_port_link_is_up(port_num)) {
- netif_carrier_on(dev);
- netif_wake_queue(dev);
- /* Start TX queue */
- mv_write(MV643XX_ETH_TRANSMIT_QUEUE_COMMAND_REG
- (port_num), 1);
- } else {
- netif_carrier_off(dev);
- netif_stop_queue(dev);
- }
- }
+ if (eth_int_cause_ext & ETH_INT_CAUSE_TX)
+ mv643xx_eth_free_completed_tx_descs(dev);
/*
* If no real interrupt occured, exit.
}
/*
- * 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)
-{
- struct mv643xx_private *mp = netdev_priv(dev);
- unsigned int port_num = mp->port_num;
- int err;
-
- spin_lock_irq(&mp->lock);
-
- err = request_irq(dev->irq, mv643xx_eth_int_handler,
- SA_SHIRQ | SA_SAMPLE_RANDOM, dev->name, dev);
-
- if (err) {
- printk(KERN_ERR "Can not assign IRQ number to MV643XX_eth%d\n",
- port_num);
- err = -EAGAIN;
- goto out;
- }
-
- if (mv643xx_eth_real_open(dev)) {
- printk("%s: Error opening interface\n", dev->name);
- err = -EBUSY;
- goto out_free;
- }
-
- spin_unlock_irq(&mp->lock);
-
- return 0;
-
-out_free:
- free_irq(dev->irq, dev);
-
-out:
- spin_unlock_irq(&mp->lock);
-
- return err;
-}
-
-/*
* ether_init_rx_desc_ring - Curve a Rx chain desc list and buffer in memory.
*
* DESCRIPTION:
mp->rx_used_desc_q = 0;
mp->rx_desc_area_size = rx_desc_num * sizeof(struct eth_rx_desc);
-
- /* Add the queue to the list of RX queues of this port */
- mp->port_rx_queue_command |= 1;
}
/*
mp->tx_curr_desc_q = 0;
mp->tx_used_desc_q = 0;
-#ifdef MV643XX_CHECKSUM_OFFLOAD_TX
- mp->tx_first_desc_q = 0;
-#endif
mp->tx_desc_area_size = tx_desc_num * sizeof(struct eth_tx_desc);
+}
+
+static int mv643xx_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ struct mv643xx_private *mp = netdev_priv(dev);
+ int err;
+
+ spin_lock_irq(&mp->lock);
+ err = mii_ethtool_sset(&mp->mii, cmd);
+ spin_unlock_irq(&mp->lock);
+
+ return err;
+}
+
+static int mv643xx_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ struct mv643xx_private *mp = netdev_priv(dev);
+ int err;
+
+ spin_lock_irq(&mp->lock);
+ err = mii_ethtool_gset(&mp->mii, cmd);
+ spin_unlock_irq(&mp->lock);
- /* Add the queue to the list of Tx queues of this port */
- mp->port_tx_queue_command |= 1;
+ /* The PHY may support 1000baseT_Half, but the mv643xx does not */
+ cmd->supported &= ~SUPPORTED_1000baseT_Half;
+ cmd->advertising &= ~ADVERTISED_1000baseT_Half;
+
+ return err;
}
-/* Helper function for mv643xx_eth_open */
-static int mv643xx_eth_real_open(struct net_device *dev)
+/*
+ * 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)
{
struct mv643xx_private *mp = netdev_priv(dev);
unsigned int port_num = mp->port_num;
unsigned int size;
+ int err;
- /* Stop RX Queues */
- mv_write(MV643XX_ETH_RECEIVE_QUEUE_COMMAND_REG(port_num), 0x0000ff00);
-
- /* Clear the ethernet port interrupts */
+ /* Clear any pending ethernet port interrupts */
mv_write(MV643XX_ETH_INTERRUPT_CAUSE_REG(port_num), 0);
mv_write(MV643XX_ETH_INTERRUPT_CAUSE_EXTEND_REG(port_num), 0);
+ /* wait for previous write to complete */
+ mv_read (MV643XX_ETH_INTERRUPT_CAUSE_EXTEND_REG(port_num));
- /* Unmask RX buffer and TX end interrupt */
- mv_write(MV643XX_ETH_INTERRUPT_MASK_REG(port_num),
- INT_CAUSE_UNMASK_ALL);
-
- /* Unmask phy and link status changes interrupts */
- mv_write(MV643XX_ETH_INTERRUPT_EXTEND_MASK_REG(port_num),
- INT_CAUSE_UNMASK_ALL_EXT);
-
- /* Set the MAC Address */
- memcpy(mp->port_mac_addr, dev->dev_addr, 6);
+ err = request_irq(dev->irq, mv643xx_eth_int_handler,
+ IRQF_SHARED | IRQF_SAMPLE_RANDOM, dev->name, dev);
+ if (err) {
+ printk(KERN_ERR "Can not assign IRQ number to MV643XX_eth%d\n",
+ port_num);
+ return -EAGAIN;
+ }
eth_port_init(mp);
- INIT_WORK(&mp->rx_task, (void (*)(void *))mv643xx_eth_rx_task, dev);
-
memset(&mp->timeout, 0, sizeof(struct timer_list));
- mp->timeout.function = mv643xx_eth_rx_task_timer_wrapper;
+ mp->timeout.function = mv643xx_eth_rx_refill_descs_timer_wrapper;
mp->timeout.data = (unsigned long)dev;
- mp->rx_task_busy = 0;
- mp->rx_timer_flag = 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);
- return -ENOMEM;
+ 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);
- kfree(mp->rx_skb);
- return -ENOMEM;
+ err = -ENOMEM;
+ goto out_free_rx_skb;
}
/* Allocate TX ring */
- mp->tx_ring_skbs = 0;
+ mp->tx_desc_count = 0;
size = mp->tx_ring_size * sizeof(struct eth_tx_desc);
mp->tx_desc_area_size = size;
if (!mp->p_tx_desc_area) {
printk(KERN_ERR "%s: Cannot allocate Tx Ring (size %d bytes)\n",
dev->name, size);
- kfree(mp->rx_skb);
- kfree(mp->tx_skb);
- return -ENOMEM;
+ 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);
ether_init_tx_desc_ring(mp);
/* Allocate RX ring */
- mp->rx_ring_skbs = 0;
+ mp->rx_desc_count = 0;
size = mp->rx_ring_size * sizeof(struct eth_rx_desc);
mp->rx_desc_area_size = size;
printk(KERN_ERR "%s: Freeing previously allocated TX queues...",
dev->name);
if (mp->rx_sram_size)
- iounmap(mp->p_rx_desc_area);
+ 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);
- kfree(mp->rx_skb);
- kfree(mp->tx_skb);
- return -ENOMEM;
+ err = -ENOMEM;
+ goto out_free_tx_skb;
}
memset((void *)mp->p_rx_desc_area, 0, size);
ether_init_rx_desc_ring(mp);
- mv643xx_eth_rx_task(dev); /* Fill RX ring with skb's */
+ mv643xx_eth_rx_refill_descs(dev); /* Fill RX ring with skb's */
- eth_port_start(mp);
+ eth_port_start(dev);
/* Interrupt Coalescing */
mp->tx_int_coal =
eth_port_set_tx_coal(port_num, 133000000, MV643XX_TX_COAL);
- netif_start_queue(dev);
+ /* Unmask phy and link status changes interrupts */
+ mv_write(MV643XX_ETH_INTERRUPT_EXTEND_MASK_REG(port_num),
+ ETH_INT_UNMASK_ALL_EXT);
+
+ /* Unmask RX buffer and TX end interrupt */
+ mv_write(MV643XX_ETH_INTERRUPT_MASK_REG(port_num), ETH_INT_UNMASK_ALL);
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;
}
static void mv643xx_eth_free_tx_rings(struct net_device *dev)
{
struct mv643xx_private *mp = netdev_priv(dev);
- unsigned int port_num = mp->port_num;
- unsigned int curr;
/* Stop Tx Queues */
- mv_write(MV643XX_ETH_TRANSMIT_QUEUE_COMMAND_REG(port_num), 0x0000ff00);
+ mv643xx_eth_port_disable_tx(mp->port_num);
- /* Free outstanding skb's on TX rings */
- for (curr = 0; mp->tx_ring_skbs && curr < mp->tx_ring_size; curr++) {
- if (mp->tx_skb[curr]) {
- dev_kfree_skb(mp->tx_skb[curr]);
- mp->tx_ring_skbs--;
- }
- }
- if (mp->tx_ring_skbs)
- printk("%s: Error on Tx descriptor free - could not free %d"
- " descriptors\n", dev->name, mp->tx_ring_skbs);
+ /* Free outstanding skb's on TX ring */
+ mv643xx_eth_free_all_tx_descs(dev);
+
+ BUG_ON(mp->tx_used_desc_q != mp->tx_curr_desc_q);
/* Free TX ring */
if (mp->tx_sram_size)
int curr;
/* Stop RX Queues */
- mv_write(MV643XX_ETH_RECEIVE_QUEUE_COMMAND_REG(port_num), 0x0000ff00);
+ mv643xx_eth_port_disable_rx(port_num);
/* Free preallocated skb's on RX rings */
- for (curr = 0; mp->rx_ring_skbs && curr < mp->rx_ring_size; curr++) {
+ 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_ring_skbs--;
+ mp->rx_desc_count--;
}
}
- if (mp->rx_ring_skbs)
+ 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_ring_skbs);
+ mp->rx_desc_count);
/* Free RX ring */
if (mp->rx_sram_size)
iounmap(mp->p_rx_desc_area);
* Output : zero if success , nonzero if fails
*/
-/* Helper function for mv643xx_eth_stop */
-
-static int mv643xx_eth_real_stop(struct net_device *dev)
+static int mv643xx_eth_stop(struct net_device *dev)
{
struct mv643xx_private *mp = netdev_priv(dev);
unsigned int port_num = mp->port_num;
+ /* Mask all interrupts on ethernet port */
+ mv_write(MV643XX_ETH_INTERRUPT_MASK_REG(port_num), ETH_INT_MASK_ALL);
+ /* wait for previous write to complete */
+ mv_read(MV643XX_ETH_INTERRUPT_MASK_REG(port_num));
+
+#ifdef MV643XX_NAPI
+ netif_poll_disable(dev);
+#endif
netif_carrier_off(dev);
netif_stop_queue(dev);
- mv643xx_eth_free_tx_rings(dev);
- mv643xx_eth_free_rx_rings(dev);
-
eth_port_reset(mp->port_num);
- /* Disable ethernet port interrupts */
- mv_write(MV643XX_ETH_INTERRUPT_CAUSE_REG(port_num), 0);
- mv_write(MV643XX_ETH_INTERRUPT_CAUSE_EXTEND_REG(port_num), 0);
+ mv643xx_eth_free_tx_rings(dev);
+ mv643xx_eth_free_rx_rings(dev);
- /* Mask RX buffer and TX end interrupt */
- mv_write(MV643XX_ETH_INTERRUPT_MASK_REG(port_num), 0);
+#ifdef MV643XX_NAPI
+ netif_poll_enable(dev);
+#endif
- /* Mask phy and link status changes interrupts */
- mv_write(MV643XX_ETH_INTERRUPT_EXTEND_MASK_REG(port_num), 0);
-
- return 0;
-}
-
-static int mv643xx_eth_stop(struct net_device *dev)
-{
- struct mv643xx_private *mp = netdev_priv(dev);
-
- spin_lock_irq(&mp->lock);
-
- mv643xx_eth_real_stop(dev);
-
- free_irq(dev->irq, dev);
- spin_unlock_irq(&mp->lock);
+ free_irq(dev->irq, dev);
return 0;
}
#ifdef MV643XX_NAPI
-static void mv643xx_tx(struct net_device *dev)
-{
- struct mv643xx_private *mp = netdev_priv(dev);
- struct pkt_info pkt_info;
-
- while (eth_tx_return_desc(mp, &pkt_info) == ETH_OK) {
- if (pkt_info.return_info) {
- if (skb_shinfo(pkt_info.return_info)->nr_frags)
- dma_unmap_page(NULL, pkt_info.buf_ptr,
- pkt_info.byte_cnt,
- DMA_TO_DEVICE);
- else
- dma_unmap_single(NULL, pkt_info.buf_ptr,
- pkt_info.byte_cnt,
- DMA_TO_DEVICE);
-
- dev_kfree_skb_irq(pkt_info.return_info);
-
- if (mp->tx_ring_skbs)
- mp->tx_ring_skbs--;
- } else
- dma_unmap_page(NULL, pkt_info.buf_ptr,
- pkt_info.byte_cnt, DMA_TO_DEVICE);
- }
-
- if (netif_queue_stopped(dev) &&
- mp->tx_ring_size > mp->tx_ring_skbs + MAX_DESCS_PER_SKB)
- netif_wake_queue(dev);
-}
-
/*
* mv643xx_poll
*
struct mv643xx_private *mp = netdev_priv(dev);
int done = 1, orig_budget, work_done;
unsigned int port_num = mp->port_num;
- unsigned long flags;
#ifdef MV643XX_TX_FAST_REFILL
if (++mp->tx_clean_threshold > 5) {
- spin_lock_irqsave(&mp->lock, flags);
- mv643xx_tx(dev);
+ mv643xx_eth_free_completed_tx_descs(dev);
mp->tx_clean_threshold = 0;
- spin_unlock_irqrestore(&mp->lock, flags);
}
#endif
if (orig_budget > dev->quota)
orig_budget = dev->quota;
work_done = mv643xx_eth_receive_queue(dev, orig_budget);
- mp->rx_task.func(dev);
*budget -= work_done;
dev->quota -= work_done;
if (work_done >= orig_budget)
}
if (done) {
- spin_lock_irqsave(&mp->lock, flags);
- __netif_rx_complete(dev);
+ netif_rx_complete(dev);
mv_write(MV643XX_ETH_INTERRUPT_CAUSE_REG(port_num), 0);
mv_write(MV643XX_ETH_INTERRUPT_CAUSE_EXTEND_REG(port_num), 0);
mv_write(MV643XX_ETH_INTERRUPT_MASK_REG(port_num),
- INT_CAUSE_UNMASK_ALL);
- mv_write(MV643XX_ETH_INTERRUPT_EXTEND_MASK_REG(port_num),
- INT_CAUSE_UNMASK_ALL_EXT);
- spin_unlock_irqrestore(&mp->lock, flags);
+ ETH_INT_UNMASK_ALL);
}
return done ? 0 : 1;
}
#endif
-/*
- * mv643xx_eth_start_xmit
- *
- * This function is queues a packet in the Tx descriptor for
- * required port.
- *
- * Input : skb - a pointer to socket buffer
- * dev - a pointer to the required port
+/**
+ * has_tiny_unaligned_frags - check if skb has any small, unaligned fragments
*
- * Output : zero upon success
+ * Hardware can't handle unaligned fragments smaller than 9 bytes.
+ * This helper function detects that case.
*/
-static int mv643xx_eth_start_xmit(struct sk_buff *skb, struct net_device *dev)
+
+static inline unsigned int has_tiny_unaligned_frags(struct sk_buff *skb)
{
- struct mv643xx_private *mp = netdev_priv(dev);
- struct net_device_stats *stats = &mp->stats;
- ETH_FUNC_RET_STATUS status;
- unsigned long flags;
- struct pkt_info pkt_info;
+ unsigned int frag;
+ skb_frag_t *fragp;
- if (netif_queue_stopped(dev)) {
- printk(KERN_ERR
- "%s: Tried sending packet when interface is stopped\n",
- dev->name);
- return 1;
+ 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;
+}
- /* This is a hard error, log it. */
- if ((mp->tx_ring_size - mp->tx_ring_skbs) <=
- (skb_shinfo(skb)->nr_frags + 1)) {
- netif_stop_queue(dev);
- printk(KERN_ERR
- "%s: Bug in mv643xx_eth - Trying to transmit when"
- " queue full !\n", dev->name);
- return 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;
+
+ BUG_ON(mp->tx_desc_count >= mp->tx_ring_size);
+
+ tx_desc_curr = mp->tx_curr_desc_q;
+ mp->tx_curr_desc_q = (tx_desc_curr + 1) % mp->tx_ring_size;
+
+ BUG_ON(mp->tx_curr_desc_q == mp->tx_used_desc_q);
+
+ return tx_desc_curr;
+}
+
+/**
+ * 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;
+
+ 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);
}
+}
- /* Paranoid check - this shouldn't happen */
- if (skb == NULL) {
- stats->tx_dropped++;
- printk(KERN_ERR "mv64320_eth paranoid check failed\n");
- return 1;
+/**
+ * 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 void eth_tx_submit_descs_for_skb(struct mv643xx_private *mp,
+ struct sk_buff *skb)
+{
+ int tx_index;
+ struct eth_tx_desc *desc;
+ u32 cmd_sts;
+ int length;
+ int nr_frags = skb_shinfo(skb)->nr_frags;
+
+ cmd_sts = ETH_TX_FIRST_DESC | ETH_GEN_CRC | ETH_BUFFER_OWNED_BY_DMA;
+
+ 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;
}
- spin_lock_irqsave(&mp->lock, flags);
+ desc->byte_cnt = length;
+ desc->buf_ptr = dma_map_single(NULL, skb->data, length, DMA_TO_DEVICE);
- /* Update packet info data structure -- DMA owned, first last */
-#ifdef MV643XX_CHECKSUM_OFFLOAD_TX
- if (!skb_shinfo(skb)->nr_frags) {
-linear:
- if (skb->ip_summed != CHECKSUM_HW) {
- pkt_info.cmd_sts = ETH_TX_ENABLE_INTERRUPT |
- ETH_TX_FIRST_DESC | ETH_TX_LAST_DESC;
- pkt_info.l4i_chk = 0;
- } else {
- u32 ipheader = skb->nh.iph->ihl << 11;
-
- pkt_info.cmd_sts = ETH_TX_ENABLE_INTERRUPT |
- ETH_TX_FIRST_DESC | ETH_TX_LAST_DESC |
- ETH_GEN_TCP_UDP_CHECKSUM |
- ETH_GEN_IP_V_4_CHECKSUM | ipheader;
- /* CPU already calculated pseudo header checksum. */
- if (skb->nh.iph->protocol == IPPROTO_UDP) {
- pkt_info.cmd_sts |= ETH_UDP_FRAME;
- pkt_info.l4i_chk = skb->h.uh->check;
- } else if (skb->nh.iph->protocol == IPPROTO_TCP)
- pkt_info.l4i_chk = skb->h.th->check;
- else {
- printk(KERN_ERR
- "%s: chksum proto != TCP or UDP\n",
- dev->name);
- spin_unlock_irqrestore(&mp->lock, flags);
- return 1;
- }
+ if (skb->ip_summed == CHECKSUM_PARTIAL) {
+ BUG_ON(skb->protocol != 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 = skb->h.uh->check;
+ break;
+ case IPPROTO_TCP:
+ desc->l4i_chk = skb->h.th->check;
+ break;
+ default:
+ BUG();
}
- pkt_info.byte_cnt = skb->len;
- pkt_info.buf_ptr = dma_map_single(NULL, skb->data, skb->len,
- DMA_TO_DEVICE);
- pkt_info.return_info = skb;
- mp->tx_ring_skbs++;
- status = eth_port_send(mp, &pkt_info);
- if ((status == ETH_ERROR) || (status == ETH_QUEUE_FULL))
- printk(KERN_ERR "%s: Error on transmitting packet\n",
- dev->name);
- stats->tx_bytes += pkt_info.byte_cnt;
} else {
- unsigned int frag;
- u32 ipheader;
-
- /* Since hardware can't handle unaligned fragments smaller
- * than 9 bytes, if we find any, we linearize the skb
- * and start again. When I've seen it, it's always been
- * the first frag (probably near the end of the page),
- * but we check all frags to be safe.
- */
- for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
- skb_frag_t *fragp;
-
- fragp = &skb_shinfo(skb)->frags[frag];
- if (fragp->size <= 8 && fragp->page_offset & 0x7) {
- skb_linearize(skb, GFP_ATOMIC);
- printk(KERN_DEBUG "%s: unaligned tiny fragment"
- "%d of %d, fixed\n",
- dev->name, frag,
- skb_shinfo(skb)->nr_frags);
- goto linear;
- }
- }
+ /* Errata BTS #50, IHL must be 5 if no HW checksum */
+ cmd_sts |= 5 << ETH_TX_IHL_SHIFT;
+ desc->l4i_chk = 0;
+ }
- /* first frag which is skb header */
- pkt_info.byte_cnt = skb_headlen(skb);
- pkt_info.buf_ptr = dma_map_single(NULL, skb->data,
- skb_headlen(skb),
- DMA_TO_DEVICE);
- pkt_info.l4i_chk = 0;
- pkt_info.return_info = 0;
- pkt_info.cmd_sts = ETH_TX_FIRST_DESC;
-
- if (skb->ip_summed == CHECKSUM_HW) {
- ipheader = skb->nh.iph->ihl << 11;
- pkt_info.cmd_sts |= ETH_GEN_TCP_UDP_CHECKSUM |
- ETH_GEN_IP_V_4_CHECKSUM | ipheader;
- /* CPU already calculated pseudo header checksum. */
- if (skb->nh.iph->protocol == IPPROTO_UDP) {
- pkt_info.cmd_sts |= ETH_UDP_FRAME;
- pkt_info.l4i_chk = skb->h.uh->check;
- } else if (skb->nh.iph->protocol == IPPROTO_TCP)
- pkt_info.l4i_chk = skb->h.th->check;
- else {
- printk(KERN_ERR
- "%s: chksum proto != TCP or UDP\n",
- dev->name);
- spin_unlock_irqrestore(&mp->lock, flags);
- return 1;
- }
- }
+ /* ensure all other descriptors are written before first cmd_sts */
+ wmb();
+ desc->cmd_sts = cmd_sts;
- status = eth_port_send(mp, &pkt_info);
- if (status != ETH_OK) {
- if ((status == ETH_ERROR))
- printk(KERN_ERR
- "%s: Error on transmitting packet\n",
- dev->name);
- if (status == ETH_QUEUE_FULL)
- printk("Error on Queue Full \n");
- if (status == ETH_QUEUE_LAST_RESOURCE)
- printk("Tx resource error \n");
- }
- stats->tx_bytes += pkt_info.byte_cnt;
-
- /* Check for the remaining frags */
- for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
- skb_frag_t *this_frag = &skb_shinfo(skb)->frags[frag];
- pkt_info.l4i_chk = 0x0000;
- pkt_info.cmd_sts = 0x00000000;
-
- /* Last Frag enables interrupt and frees the skb */
- if (frag == (skb_shinfo(skb)->nr_frags - 1)) {
- pkt_info.cmd_sts |= ETH_TX_ENABLE_INTERRUPT |
- ETH_TX_LAST_DESC;
- pkt_info.return_info = skb;
- mp->tx_ring_skbs++;
- } else {
- pkt_info.return_info = 0;
- }
- pkt_info.l4i_chk = 0;
- pkt_info.byte_cnt = this_frag->size;
+ /* ensure all descriptors are written before poking hardware */
+ wmb();
+ mv643xx_eth_port_enable_tx(mp->port_num, ETH_TX_QUEUES_ENABLED);
- pkt_info.buf_ptr = dma_map_page(NULL, this_frag->page,
- this_frag->page_offset,
- this_frag->size,
- DMA_TO_DEVICE);
+ mp->tx_desc_count += nr_frags + 1;
+}
- status = eth_port_send(mp, &pkt_info);
+/**
+ * mv643xx_eth_start_xmit - queue an skb to the hardware for transmission
+ *
+ */
+static int mv643xx_eth_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct mv643xx_private *mp = netdev_priv(dev);
+ struct net_device_stats *stats = &mp->stats;
+ unsigned long flags;
- if (status != ETH_OK) {
- if ((status == ETH_ERROR))
- printk(KERN_ERR "%s: Error on "
- "transmitting packet\n",
- dev->name);
+ BUG_ON(netif_queue_stopped(dev));
+ BUG_ON(skb == NULL);
- if (status == ETH_QUEUE_LAST_RESOURCE)
- printk("Tx resource error \n");
+ 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);
+ return 1;
+ }
- if (status == ETH_QUEUE_FULL)
- printk("Queue is full \n");
- }
- stats->tx_bytes += pkt_info.byte_cnt;
+ if (has_tiny_unaligned_frags(skb)) {
+ if (__skb_linearize(skb)) {
+ stats->tx_dropped++;
+ printk(KERN_DEBUG "%s: failed to linearize tiny "
+ "unaligned fragment\n", dev->name);
+ return 1;
}
}
-#else
- pkt_info.cmd_sts = ETH_TX_ENABLE_INTERRUPT | ETH_TX_FIRST_DESC |
- ETH_TX_LAST_DESC;
- pkt_info.l4i_chk = 0;
- pkt_info.byte_cnt = skb->len;
- pkt_info.buf_ptr = dma_map_single(NULL, skb->data, skb->len,
- DMA_TO_DEVICE);
- pkt_info.return_info = skb;
- mp->tx_ring_skbs++;
- status = eth_port_send(mp, &pkt_info);
- if ((status == ETH_ERROR) || (status == ETH_QUEUE_FULL))
- printk(KERN_ERR "%s: Error on transmitting packet\n",
- dev->name);
- stats->tx_bytes += pkt_info.byte_cnt;
-#endif
- /* Check if TX queue can handle another skb. If not, then
- * signal higher layers to stop requesting TX
- */
- if (mp->tx_ring_size <= (mp->tx_ring_skbs + MAX_DESCS_PER_SKB))
- /*
- * Stop getting skb's from upper layers.
- * Getting skb's from upper layers will be enabled again after
- * packets are released.
- */
- netif_stop_queue(dev);
+ spin_lock_irqsave(&mp->lock, flags);
- /* Update statistics and start of transmittion time */
+ 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 0; /* success */
return &mp->stats;
}
+#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;
+
+ mv_write(MV643XX_ETH_INTERRUPT_MASK_REG(port_num), ETH_INT_MASK_ALL);
+ /* wait for previous write to complete */
+ mv_read(MV643XX_ETH_INTERRUPT_MASK_REG(port_num));
+
+ mv643xx_eth_int_handler(netdev->irq, netdev);
+
+ mv_write(MV643XX_ETH_INTERRUPT_MASK_REG(port_num), ETH_INT_UNMASK_ALL);
+}
+#endif
+
+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);
+
+ 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;
+ }
+}
+
/*/
* mv643xx_eth_probe
*
* Input : struct device *
* Output : -ENOMEM if failed , 0 if success
*/
-static int mv643xx_eth_probe(struct device *ddev)
+static int mv643xx_eth_probe(struct platform_device *pdev)
{
- struct platform_device *pdev = to_platform_device(ddev);
struct mv643xx_eth_platform_data *pd;
- int port_num = pdev->id;
+ 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 */
+
+ pd = pdev->dev.platform_data;
+ if (pd == NULL) {
+ printk(KERN_ERR "No mv643xx_eth_platform_data\n");
+ return -ENODEV;
+ }
dev = alloc_etherdev(sizeof(struct mv643xx_private));
if (!dev)
return -ENOMEM;
- dev_set_drvdata(ddev, dev);
+ platform_set_drvdata(pdev, dev);
mp = netdev_priv(dev);
BUG_ON(!res);
dev->irq = res->start;
- mp->port_num = port_num;
-
dev->open = mv643xx_eth_open;
dev->stop = mv643xx_eth_stop;
dev->hard_start_xmit = mv643xx_eth_start_xmit;
dev->weight = 64;
#endif
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ dev->poll_controller = mv643xx_netpoll;
+#endif
+
dev->watchdog_timeo = 2 * HZ;
dev->tx_queue_len = mp->tx_ring_size;
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
* 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 | NETIF_F_HW_CSUM;
+ dev->features = NETIF_F_SG | NETIF_F_IP_CSUM;
#endif
#endif
/* Configure the timeout task */
- INIT_WORK(&mp->tx_timeout_task,
- (void (*)(void *))mv643xx_eth_tx_timeout_task, dev);
+ INIT_WORK(&mp->tx_timeout_task, mv643xx_eth_tx_timeout_task);
spin_lock_init(&mp->lock);
+ port_num = mp->port_num = pd->port_number;
+
/* set default config values */
eth_port_uc_addr_get(dev, dev->dev_addr);
- mp->port_config = MV643XX_ETH_PORT_CONFIG_DEFAULT_VALUE;
- mp->port_config_extend = MV643XX_ETH_PORT_CONFIG_EXTEND_DEFAULT_VALUE;
- mp->port_sdma_config = MV643XX_ETH_PORT_SDMA_CONFIG_DEFAULT_VALUE;
- mp->port_serial_control = MV643XX_ETH_PORT_SERIAL_CONTROL_DEFAULT_VALUE;
mp->rx_ring_size = MV643XX_ETH_PORT_DEFAULT_RECEIVE_QUEUE_SIZE;
mp->tx_ring_size = MV643XX_ETH_PORT_DEFAULT_TRANSMIT_QUEUE_SIZE;
- pd = pdev->dev.platform_data;
- if (pd) {
- if (pd->mac_addr != NULL)
- memcpy(dev->dev_addr, pd->mac_addr, 6);
-
- if (pd->phy_addr || pd->force_phy_addr)
- ethernet_phy_set(port_num, pd->phy_addr);
-
- if (pd->port_config || pd->force_port_config)
- mp->port_config = pd->port_config;
+ if (is_valid_ether_addr(pd->mac_addr))
+ memcpy(dev->dev_addr, pd->mac_addr, 6);
- if (pd->port_config_extend || pd->force_port_config_extend)
- mp->port_config_extend = pd->port_config_extend;
+ if (pd->phy_addr || pd->force_phy_addr)
+ ethernet_phy_set(port_num, pd->phy_addr);
- if (pd->port_sdma_config || pd->force_port_sdma_config)
- mp->port_sdma_config = pd->port_sdma_config;
+ if (pd->rx_queue_size)
+ mp->rx_ring_size = pd->rx_queue_size;
- if (pd->port_serial_control || pd->force_port_serial_control)
- mp->port_serial_control = pd->port_serial_control;
+ if (pd->tx_queue_size)
+ mp->tx_ring_size = pd->tx_queue_size;
- if (pd->rx_queue_size)
- mp->rx_ring_size = pd->rx_queue_size;
+ if (pd->tx_sram_size) {
+ mp->tx_sram_size = pd->tx_sram_size;
+ mp->tx_sram_addr = pd->tx_sram_addr;
+ }
- if (pd->tx_queue_size)
- mp->tx_ring_size = pd->tx_queue_size;
+ if (pd->rx_sram_size) {
+ mp->rx_sram_size = pd->rx_sram_size;
+ mp->rx_sram_addr = pd->rx_sram_addr;
+ }
- if (pd->tx_sram_size) {
- mp->tx_sram_size = pd->tx_sram_size;
- mp->tx_sram_addr = pd->tx_sram_addr;
- }
+ duplex = pd->duplex;
+ speed = pd->speed;
- if (pd->rx_sram_size) {
- mp->rx_sram_size = pd->rx_sram_size;
- mp->rx_sram_addr = pd->rx_sram_addr;
- }
- }
+ /* 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(port_num);
+ mp->mii.phy_id_mask = 0x3f;
+ mp->mii.reg_num_mask = 0x1f;
err = ethernet_phy_detect(port_num);
if (err) {
pr_debug("MV643xx ethernet port %d: "
"No PHY detected at addr %d\n",
port_num, ethernet_phy_get(port_num));
- return err;
+ goto out;
}
+ ethernet_phy_reset(port_num);
+ 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_MODULE_OWNER(dev);
+ SET_NETDEV_DEV(dev, &pdev->dev);
err = register_netdev(dev);
if (err)
goto out;
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:
return err;
}
-static int mv643xx_eth_remove(struct device *ddev)
+static int mv643xx_eth_remove(struct platform_device *pdev)
{
- struct net_device *dev = dev_get_drvdata(ddev);
+ struct net_device *dev = platform_get_drvdata(pdev);
unregister_netdev(dev);
flush_scheduled_work();
free_netdev(dev);
- dev_set_drvdata(ddev, NULL);
+ platform_set_drvdata(pdev, NULL);
return 0;
}
-static int mv643xx_eth_shared_probe(struct device *ddev)
+static int mv643xx_eth_shared_probe(struct platform_device *pdev)
{
- struct platform_device *pdev = to_platform_device(ddev);
struct resource *res;
printk(KERN_NOTICE "MV-643xx 10/100/1000 Ethernet Driver\n");
}
-static int mv643xx_eth_shared_remove(struct device *ddev)
+static int mv643xx_eth_shared_remove(struct platform_device *pdev)
{
iounmap(mv643xx_eth_shared_base);
mv643xx_eth_shared_base = NULL;
return 0;
}
-static struct device_driver mv643xx_eth_driver = {
- .name = MV643XX_ETH_NAME,
- .bus = &platform_bus_type,
+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 */
+ mv_write(MV643XX_ETH_INTERRUPT_MASK_REG(port_num), 0);
+ mv_read (MV643XX_ETH_INTERRUPT_MASK_REG(port_num));
+
+ eth_port_reset(port_num);
+}
+
+static struct platform_driver mv643xx_eth_driver = {
.probe = mv643xx_eth_probe,
.remove = mv643xx_eth_remove,
+ .shutdown = mv643xx_eth_shutdown,
+ .driver = {
+ .name = MV643XX_ETH_NAME,
+ },
};
-static struct device_driver mv643xx_eth_shared_driver = {
- .name = MV643XX_ETH_SHARED_NAME,
- .bus = &platform_bus_type,
+static struct platform_driver mv643xx_eth_shared_driver = {
.probe = mv643xx_eth_shared_probe,
.remove = mv643xx_eth_shared_remove,
+ .driver = {
+ .name = MV643XX_ETH_SHARED_NAME,
+ },
};
/*
{
int rc;
- rc = driver_register(&mv643xx_eth_shared_driver);
+ rc = platform_driver_register(&mv643xx_eth_shared_driver);
if (!rc) {
- rc = driver_register(&mv643xx_eth_driver);
+ rc = platform_driver_register(&mv643xx_eth_driver);
if (rc)
- driver_unregister(&mv643xx_eth_shared_driver);
+ platform_driver_unregister(&mv643xx_eth_shared_driver);
}
return rc;
}
*/
static void __exit mv643xx_cleanup_module(void)
{
- driver_unregister(&mv643xx_eth_driver);
- driver_unregister(&mv643xx_eth_shared_driver);
+ platform_driver_unregister(&mv643xx_eth_driver);
+ platform_driver_unregister(&mv643xx_eth_shared_driver);
}
module_init(mv643xx_init_module);
* to the Rx descriptor ring to enable the reuse of this source.
* Return Rx resource is done using the eth_rx_return_buff API.
*
- * Transmit operation:
- * The eth_port_send API supports Scatter-Gather which enables to
- * send a packet spanned over multiple buffers. This means that
- * for each packet info structure given by the user and put into
- * the Tx descriptors ring, will be transmitted only if the 'LAST'
- * bit will be set in the packet info command status field. This
- * API also consider restriction regarding buffer alignments and
- * sizes.
- * The user must return a Tx resource after ensuring the buffer
- * has been transmitted to enable the Tx ring indexes to update.
- *
- * BOARD LAYOUT
- * This device is on-board. No jumper diagram is necessary.
- *
- * EXTERNAL INTERFACE
- *
* 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_mac_addr[6] User defined port MAC address.
* port_config User port configuration value.
* port_config_extend User port config extend value.
* port_sdma_config User port SDMA config value.
* return_info Tx/Rx user resource return information.
*/
-/* defines */
-/* SDMA command macros */
-#define ETH_ENABLE_TX_QUEUE(eth_port) \
- mv_write(MV643XX_ETH_TRANSMIT_QUEUE_COMMAND_REG(eth_port), 1)
-
-/* locals */
-
/* PHY routines */
static int ethernet_phy_get(unsigned int eth_port_num);
static void ethernet_phy_set(unsigned int eth_port_num, int phy_addr);
/* Ethernet Port routines */
-static int eth_port_uc_addr(unsigned int eth_port_num, unsigned char uc_nibble,
- int option);
+static void eth_port_set_filter_table_entry(int table, unsigned char entry);
/*
* eth_port_init - Initialize the Ethernet port driver
*/
static void eth_port_init(struct mv643xx_private *mp)
{
- mp->port_rx_queue_command = 0;
- mp->port_tx_queue_command = 0;
-
mp->rx_resource_err = 0;
- mp->tx_resource_err = 0;
eth_port_reset(mp->port_num);
eth_port_init_mac_tables(mp->port_num);
-
- ethernet_phy_reset(mp->port_num);
}
/*
* and ether_init_rx_desc_ring for Rx queues).
*
* INPUT:
- * struct mv643xx_private *mp Ethernet port control struct
+ * dev - a pointer to the required interface
*
* OUTPUT:
* Ethernet port is ready to receive and transmit.
* RETURN:
* None.
*/
-static void eth_port_start(struct mv643xx_private *mp)
+static void eth_port_start(struct net_device *dev)
{
+ struct mv643xx_private *mp = netdev_priv(dev);
unsigned int port_num = mp->port_num;
int tx_curr_desc, rx_curr_desc;
+ u32 pscr;
+ struct ethtool_cmd ethtool_cmd;
/* Assignment of Tx CTRP of given queue */
tx_curr_desc = mp->tx_curr_desc_q;
(u32)((struct eth_rx_desc *)mp->rx_desc_dma + rx_curr_desc));
/* Add the assigned Ethernet address to the port's address table */
- eth_port_uc_addr_set(port_num, mp->port_mac_addr);
+ eth_port_uc_addr_set(port_num, dev->dev_addr);
/* Assign port configuration and command. */
- mv_write(MV643XX_ETH_PORT_CONFIG_REG(port_num), mp->port_config);
+ mv_write(MV643XX_ETH_PORT_CONFIG_REG(port_num),
+ MV643XX_ETH_PORT_CONFIG_DEFAULT_VALUE);
mv_write(MV643XX_ETH_PORT_CONFIG_EXTEND_REG(port_num),
- mp->port_config_extend);
+ MV643XX_ETH_PORT_CONFIG_EXTEND_DEFAULT_VALUE);
+ pscr = mv_read(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num));
- /* Increase the Rx side buffer size if supporting GigE */
- if (mp->port_serial_control & MV643XX_ETH_SET_GMII_SPEED_TO_1000)
- mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num),
- (mp->port_serial_control & 0xfff1ffff) | (0x5 << 17));
- else
- mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num),
- mp->port_serial_control);
+ pscr &= ~(MV643XX_ETH_SERIAL_PORT_ENABLE | MV643XX_ETH_FORCE_LINK_PASS);
+ mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num), pscr);
- mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num),
- mv_read(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num)) |
- MV643XX_ETH_SERIAL_PORT_ENABLE);
+ pscr |= MV643XX_ETH_DISABLE_AUTO_NEG_FOR_FLOW_CTRL |
+ MV643XX_ETH_DISABLE_AUTO_NEG_SPEED_GMII |
+ MV643XX_ETH_DISABLE_AUTO_NEG_FOR_DUPLX |
+ MV643XX_ETH_DO_NOT_FORCE_LINK_FAIL |
+ MV643XX_ETH_SERIAL_PORT_CONTROL_RESERVED;
+
+ mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num), pscr);
+
+ pscr |= MV643XX_ETH_SERIAL_PORT_ENABLE;
+ mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num), pscr);
/* Assign port SDMA configuration */
mv_write(MV643XX_ETH_SDMA_CONFIG_REG(port_num),
- mp->port_sdma_config);
+ MV643XX_ETH_PORT_SDMA_CONFIG_DEFAULT_VALUE);
/* Enable port Rx. */
- mv_write(MV643XX_ETH_RECEIVE_QUEUE_COMMAND_REG(port_num),
- mp->port_rx_queue_command);
+ mv643xx_eth_port_enable_rx(port_num, ETH_RX_QUEUES_ENABLED);
+
+ /* Disable port bandwidth limits by clearing MTU register */
+ mv_write(MV643XX_ETH_MAXIMUM_TRANSMIT_UNIT(port_num), 0);
+
+ /* save phy settings across reset */
+ mv643xx_get_settings(dev, ðtool_cmd);
+ ethernet_phy_reset(mp->port_num);
+ mv643xx_set_settings(dev, ðtool_cmd);
}
/*
* char * p_addr Address to be set
*
* OUTPUT:
- * Set MAC address low and high registers. also calls eth_port_uc_addr()
- * To set the unicast table with the proper information.
+ * Set MAC address low and high registers. also calls
+ * eth_port_set_filter_table_entry() to set the unicast
+ * table with the proper information.
*
* RETURN:
* N/A.
{
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) |
mv_write(MV643XX_ETH_MAC_ADDR_HIGH(eth_port_num), mac_h);
/* Accept frames of this address */
- eth_port_uc_addr(eth_port_num, p_addr[5], ACCEPT_MAC_ADDR);
-
- return;
+ table = MV643XX_ETH_DA_FILTER_UNICAST_TABLE_BASE(eth_port_num);
+ eth_port_set_filter_table_entry(table, p_addr[5] & 0x0f);
}
/*
}
/*
- * eth_port_uc_addr - This function Set the port unicast address table
- *
- * DESCRIPTION:
- * This function locates the proper entry in the Unicast table for the
- * specified MAC nibble and sets its properties according to function
- * parameters.
- *
- * INPUT:
- * unsigned int eth_port_num Port number.
- * unsigned char uc_nibble Unicast MAC Address last nibble.
- * int option 0 = Add, 1 = remove address.
- *
- * OUTPUT:
- * This function add/removes MAC addresses from the port unicast address
- * table.
- *
- * RETURN:
- * true is output succeeded.
- * false if option parameter is invalid.
- *
+ * 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 int eth_port_uc_addr(unsigned int eth_port_num, unsigned char uc_nibble,
- int option)
+static void eth_port_set_filter_table_entry(int table, unsigned char entry)
{
- unsigned int unicast_reg;
+ unsigned int table_reg;
unsigned int tbl_offset;
unsigned int reg_offset;
- /* Locate the Unicast table entry */
- uc_nibble = (0xf & uc_nibble);
- tbl_offset = (uc_nibble / 4) * 4; /* Register offset from unicast table base */
- reg_offset = uc_nibble % 4; /* Entry offset within the above register */
+ tbl_offset = (entry / 4) * 4; /* Register offset of DA table entry */
+ reg_offset = entry % 4; /* Entry offset within the register */
- switch (option) {
- case REJECT_MAC_ADDR:
- /* Clear accepts frame bit at given unicast DA table entry */
- unicast_reg = mv_read((MV643XX_ETH_DA_FILTER_UNICAST_TABLE_BASE
- (eth_port_num) + tbl_offset));
+ /* Set "accepts frame bit" at specified table entry */
+ table_reg = mv_read(table + tbl_offset);
+ table_reg |= 0x01 << (8 * reg_offset);
+ mv_write(table + tbl_offset, table_reg);
+}
+
+/*
+ * eth_port_mc_addr - Multicast address settings.
+ *
+ * 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 void eth_port_mc_addr(unsigned int eth_port_num, unsigned char *p_addr)
+{
+ unsigned int mac_h;
+ unsigned int mac_l;
+ unsigned char crc_result = 0;
+ int table;
+ int mac_array[48];
+ int crc[8];
+ int i;
- unicast_reg &= (0x0E << (8 * reg_offset));
+ if ((p_addr[0] == 0x01) && (p_addr[1] == 0x00) &&
+ (p_addr[2] == 0x5E) && (p_addr[3] == 0x00) && (p_addr[4] == 0x00)) {
+ table = MV643XX_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE
+ (eth_port_num);
+ eth_port_set_filter_table_entry(table, p_addr[5]);
+ return;
+ }
- mv_write((MV643XX_ETH_DA_FILTER_UNICAST_TABLE_BASE
- (eth_port_num) + tbl_offset), unicast_reg);
- break;
+ /* 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);
+
+ 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;
+
+ 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];
+
+ 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];
+
+ 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];
+
+ 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];
+
+ 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];
+
+ 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];
+
+ 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];
+
+ 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];
+
+ for (i = 0; i < 8; i++)
+ crc_result = crc_result | (crc[i] << i);
+
+ table = MV643XX_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE(eth_port_num);
+ eth_port_set_filter_table_entry(table, crc_result);
+}
- case ACCEPT_MAC_ADDR:
- /* Set accepts frame bit at unicast DA filter table entry */
- unicast_reg =
- mv_read((MV643XX_ETH_DA_FILTER_UNICAST_TABLE_BASE
- (eth_port_num) + tbl_offset));
+/*
+ * Set the entire multicast list based on dev->mc_list.
+ */
+static void eth_port_set_multicast_list(struct net_device *dev)
+{
- unicast_reg |= (0x01 << (8 * reg_offset));
+ 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;
- mv_write((MV643XX_ETH_DA_FILTER_UNICAST_TABLE_BASE
- (eth_port_num) + tbl_offset), unicast_reg);
+ /* 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;
+ */
+ mv_write(MV643XX_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE(eth_port_num) + table_index, 0x01010101);
+
+ /* 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;
+ */
+ mv_write(MV643XX_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE(eth_port_num) + table_index, 0x01010101);
+ }
+ return;
+ }
- break;
+ /* 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) */
+ mv_write(MV643XX_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE
+ (eth_port_num) + table_index, 0);
- default:
- return 0;
+ /* Clear DA filter other multicast table (Ex_dFOMT) */
+ mv_write(MV643XX_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE
+ (eth_port_num) + table_index, 0);
}
- return 1;
+ /* 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(eth_port_num, mc_list->dmi_addr);
}
/*
/* Clear DA filter unicast table (Ex_dFUT) */
for (table_index = 0; table_index <= 0xC; table_index += 4)
- mv_write((MV643XX_ETH_DA_FILTER_UNICAST_TABLE_BASE
- (eth_port_num) + table_index), 0);
+ mv_write(MV643XX_ETH_DA_FILTER_UNICAST_TABLE_BASE
+ (eth_port_num) + table_index, 0);
for (table_index = 0; table_index <= 0xFC; table_index += 4) {
/* Clear DA filter special multicast table (Ex_dFSMT) */
- mv_write((MV643XX_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE
- (eth_port_num) + table_index), 0);
+ mv_write(MV643XX_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE
+ (eth_port_num) + table_index, 0);
/* Clear DA filter other multicast table (Ex_dFOMT) */
- mv_write((MV643XX_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE
- (eth_port_num) + table_index), 0);
+ mv_write(MV643XX_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE
+ (eth_port_num) + table_index, 0);
}
}
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);
+ *(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 +=
for (offset = ETH_MIB_GOOD_FRAMES_SENT;
offset <= ETH_MIB_LATE_COLLISION;
offset += 4)
- *(u32 *)((char *)p + offset) = read_mib(mp, offset);
+ *(u32 *)((char *)p + offset) += read_mib(mp, offset);
}
/*
eth_port_read_smi_reg(eth_port_num, 0, &phy_reg_data);
phy_reg_data |= 0x8000; /* Set bit 15 to reset the PHY */
eth_port_write_smi_reg(eth_port_num, 0, phy_reg_data);
+
+ /* wait for PHY to come out of reset */
+ do {
+ udelay(1);
+ eth_port_read_smi_reg(eth_port_num, 0, &phy_reg_data);
+ } while (phy_reg_data & 0x8000);
}
-/*
- * eth_port_reset - Reset Ethernet port
- *
- * 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.
- *
- * INPUT:
- * unsigned int eth_port_num Ethernet Port number.
- *
- * OUTPUT:
- * Channel activity is halted.
- *
- * RETURN:
- * None.
- *
- */
-static void eth_port_reset(unsigned int port_num)
+static void mv643xx_eth_port_enable_tx(unsigned int port_num,
+ unsigned int queues)
{
- unsigned int reg_data;
+ mv_write(MV643XX_ETH_TRANSMIT_QUEUE_COMMAND_REG(port_num), queues);
+}
- /* Stop Tx port activity. Check port Tx activity. */
- reg_data = mv_read(MV643XX_ETH_TRANSMIT_QUEUE_COMMAND_REG(port_num));
+static void mv643xx_eth_port_enable_rx(unsigned int port_num,
+ unsigned int queues)
+{
+ mv_write(MV643XX_ETH_RECEIVE_QUEUE_COMMAND_REG(port_num), queues);
+}
+
+static unsigned int mv643xx_eth_port_disable_tx(unsigned int port_num)
+{
+ u32 queues;
- if (reg_data & 0xFF) {
- /* Issue stop command for active channels only */
+ /* Stop Tx port activity. Check port Tx activity. */
+ queues = mv_read(MV643XX_ETH_TRANSMIT_QUEUE_COMMAND_REG(port_num))
+ & 0xFF;
+ if (queues) {
+ /* Issue stop command for active queues only */
mv_write(MV643XX_ETH_TRANSMIT_QUEUE_COMMAND_REG(port_num),
- (reg_data << 8));
+ (queues << 8));
/* Wait for all Tx activity to terminate. */
/* Check port cause register that all Tx queues are stopped */
while (mv_read(MV643XX_ETH_TRANSMIT_QUEUE_COMMAND_REG(port_num))
- & 0xFF)
- udelay(10);
+ & 0xFF)
+ udelay(PHY_WAIT_MICRO_SECONDS);
+
+ /* Wait for Tx FIFO to empty */
+ while (mv_read(MV643XX_ETH_PORT_STATUS_REG(port_num)) &
+ ETH_PORT_TX_FIFO_EMPTY)
+ udelay(PHY_WAIT_MICRO_SECONDS);
}
- /* Stop Rx port activity. Check port Rx activity. */
- reg_data = mv_read(MV643XX_ETH_RECEIVE_QUEUE_COMMAND_REG(port_num));
+ return queues;
+}
- if (reg_data & 0xFF) {
- /* Issue stop command for active channels only */
+static unsigned int mv643xx_eth_port_disable_rx(unsigned int port_num)
+{
+ u32 queues;
+
+ /* Stop Rx port activity. Check port Rx activity. */
+ queues = mv_read(MV643XX_ETH_RECEIVE_QUEUE_COMMAND_REG(port_num))
+ & 0xFF;
+ if (queues) {
+ /* Issue stop command for active queues only */
mv_write(MV643XX_ETH_RECEIVE_QUEUE_COMMAND_REG(port_num),
- (reg_data << 8));
+ (queues << 8));
/* Wait for all Rx activity to terminate. */
/* Check port cause register that all Rx queues are stopped */
while (mv_read(MV643XX_ETH_RECEIVE_QUEUE_COMMAND_REG(port_num))
- & 0xFF)
- udelay(10);
+ & 0xFF)
+ udelay(PHY_WAIT_MICRO_SECONDS);
}
- /* Clear all MIB counters */
- eth_clear_mib_counters(port_num);
-
- /* Reset the Enable bit in the Configuration Register */
- reg_data = mv_read(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num));
- reg_data &= ~MV643XX_ETH_SERIAL_PORT_ENABLE;
- mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num), reg_data);
+ return queues;
}
/*
- * ethernet_set_config_reg - Set specified bits in configuration register.
+ * eth_port_reset - Reset Ethernet port
*
* DESCRIPTION:
- * This function sets specified bits in the given ethernet
- * configuration register.
+ * 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:
* unsigned int eth_port_num Ethernet Port number.
- * unsigned int value 32 bit value.
*
* OUTPUT:
- * The set bits in the value parameter are set in the configuration
- * register.
+ * Channel activity is halted.
*
* RETURN:
* None.
*
*/
-static void ethernet_set_config_reg(unsigned int eth_port_num,
- unsigned int value)
-{
- unsigned int eth_config_reg;
-
- eth_config_reg = mv_read(MV643XX_ETH_PORT_CONFIG_REG(eth_port_num));
- eth_config_reg |= value;
- mv_write(MV643XX_ETH_PORT_CONFIG_REG(eth_port_num), eth_config_reg);
-}
-
-static int eth_port_autoneg_supported(unsigned int eth_port_num)
-{
- unsigned int phy_reg_data0;
-
- eth_port_read_smi_reg(eth_port_num, 0, &phy_reg_data0);
-
- return phy_reg_data0 & 0x1000;
-}
-
-static int eth_port_link_is_up(unsigned int eth_port_num)
+static void eth_port_reset(unsigned int port_num)
{
- unsigned int phy_reg_data1;
+ unsigned int reg_data;
- eth_port_read_smi_reg(eth_port_num, 1, &phy_reg_data1);
+ mv643xx_eth_port_disable_tx(port_num);
+ mv643xx_eth_port_disable_rx(port_num);
- if (eth_port_autoneg_supported(eth_port_num)) {
- if (phy_reg_data1 & 0x20) /* auto-neg complete */
- return 1;
- } else if (phy_reg_data1 & 0x4) /* link up */
- return 1;
+ /* Clear all MIB counters */
+ eth_clear_mib_counters(port_num);
- return 0;
+ /* Reset the Enable bit in the Configuration Register */
+ reg_data = mv_read(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num));
+ reg_data &= ~(MV643XX_ETH_SERIAL_PORT_ENABLE |
+ MV643XX_ETH_DO_NOT_FORCE_LINK_FAIL |
+ MV643XX_ETH_FORCE_LINK_PASS);
+ mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num), reg_data);
}
-/*
- * ethernet_get_config_reg - Get the port configuration register
- *
- * DESCRIPTION:
- * This function returns the configuration register value of the given
- * ethernet port.
- *
- * INPUT:
- * unsigned int eth_port_num Ethernet Port number.
- *
- * OUTPUT:
- * None.
- *
- * RETURN:
- * Port configuration register value.
- */
-static unsigned int ethernet_get_config_reg(unsigned int eth_port_num)
-{
- unsigned int eth_config_reg;
-
- eth_config_reg = mv_read(MV643XX_ETH_PORT_CONFIG_EXTEND_REG
- (eth_port_num));
- return eth_config_reg;
-}
/*
* eth_port_read_smi_reg - Read PHY registers
}
/*
- * eth_port_send - Send an Ethernet packet
- *
- * DESCRIPTION:
- * This routine send a given packet described by p_pktinfo parameter. It
- * supports transmitting of a packet spaned over multiple buffers. The
- * routine updates 'curr' and 'first' indexes according to the packet
- * segment passed to the routine. In case the packet segment is first,
- * the 'first' index is update. In any case, the 'curr' index is updated.
- * If the routine get into Tx resource error it assigns 'curr' index as
- * 'first'. This way the function can abort Tx process of multiple
- * descriptors per packet.
- *
- * INPUT:
- * struct mv643xx_private *mp Ethernet Port Control srtuct.
- * struct pkt_info *p_pkt_info User packet buffer.
- *
- * OUTPUT:
- * Tx ring 'curr' and 'first' indexes are updated.
- *
- * RETURN:
- * ETH_QUEUE_FULL in case of Tx resource error.
- * ETH_ERROR in case the routine can not access Tx desc ring.
- * ETH_QUEUE_LAST_RESOURCE if the routine uses the last Tx resource.
- * ETH_OK otherwise.
- *
+ * Wrappers for MII support library.
*/
-#ifdef MV643XX_CHECKSUM_OFFLOAD_TX
-/*
- * Modified to include the first descriptor pointer in case of SG
- */
-static ETH_FUNC_RET_STATUS eth_port_send(struct mv643xx_private *mp,
- struct pkt_info *p_pkt_info)
+static int mv643xx_mdio_read(struct net_device *dev, int phy_id, int location)
{
- int tx_desc_curr, tx_desc_used, tx_first_desc, tx_next_desc;
- struct eth_tx_desc *current_descriptor;
- struct eth_tx_desc *first_descriptor;
- u32 command;
-
- /* Do not process Tx ring in case of Tx ring resource error */
- if (mp->tx_resource_err)
- return ETH_QUEUE_FULL;
-
- /*
- * The hardware requires that each buffer that is <= 8 bytes
- * in length must be aligned on an 8 byte boundary.
- */
- if (p_pkt_info->byte_cnt <= 8 && p_pkt_info->buf_ptr & 0x7) {
- printk(KERN_ERR
- "mv643xx_eth port %d: packet size <= 8 problem\n",
- mp->port_num);
- return ETH_ERROR;
- }
-
- /* Get the Tx Desc ring indexes */
- tx_desc_curr = mp->tx_curr_desc_q;
- tx_desc_used = mp->tx_used_desc_q;
-
- current_descriptor = &mp->p_tx_desc_area[tx_desc_curr];
-
- tx_next_desc = (tx_desc_curr + 1) % mp->tx_ring_size;
-
- current_descriptor->buf_ptr = p_pkt_info->buf_ptr;
- current_descriptor->byte_cnt = p_pkt_info->byte_cnt;
- current_descriptor->l4i_chk = p_pkt_info->l4i_chk;
- mp->tx_skb[tx_desc_curr] = p_pkt_info->return_info;
-
- command = p_pkt_info->cmd_sts | ETH_ZERO_PADDING | ETH_GEN_CRC |
- ETH_BUFFER_OWNED_BY_DMA;
- if (command & ETH_TX_FIRST_DESC) {
- tx_first_desc = tx_desc_curr;
- mp->tx_first_desc_q = tx_first_desc;
- first_descriptor = current_descriptor;
- mp->tx_first_command = command;
- } else {
- tx_first_desc = mp->tx_first_desc_q;
- first_descriptor = &mp->p_tx_desc_area[tx_first_desc];
- BUG_ON(first_descriptor == NULL);
- current_descriptor->cmd_sts = command;
- }
-
- if (command & ETH_TX_LAST_DESC) {
- wmb();
- first_descriptor->cmd_sts = mp->tx_first_command;
-
- wmb();
- ETH_ENABLE_TX_QUEUE(mp->port_num);
-
- /*
- * Finish Tx packet. Update first desc in case of Tx resource
- * error */
- tx_first_desc = tx_next_desc;
- mp->tx_first_desc_q = tx_first_desc;
- }
-
- /* Check for ring index overlap in the Tx desc ring */
- if (tx_next_desc == tx_desc_used) {
- mp->tx_resource_err = 1;
- mp->tx_curr_desc_q = tx_first_desc;
-
- return ETH_QUEUE_LAST_RESOURCE;
- }
-
- mp->tx_curr_desc_q = tx_next_desc;
-
- return ETH_OK;
-}
-#else
-static ETH_FUNC_RET_STATUS eth_port_send(struct mv643xx_private *mp,
- struct pkt_info *p_pkt_info)
-{
- int tx_desc_curr;
- int tx_desc_used;
- struct eth_tx_desc *current_descriptor;
- unsigned int command_status;
-
- /* Do not process Tx ring in case of Tx ring resource error */
- if (mp->tx_resource_err)
- return ETH_QUEUE_FULL;
-
- /* Get the Tx Desc ring indexes */
- tx_desc_curr = mp->tx_curr_desc_q;
- tx_desc_used = mp->tx_used_desc_q;
- current_descriptor = &mp->p_tx_desc_area[tx_desc_curr];
-
- command_status = p_pkt_info->cmd_sts | ETH_ZERO_PADDING | ETH_GEN_CRC;
- current_descriptor->buf_ptr = p_pkt_info->buf_ptr;
- current_descriptor->byte_cnt = p_pkt_info->byte_cnt;
- mp->tx_skb[tx_desc_curr] = p_pkt_info->return_info;
-
- /* Set last desc with DMA ownership and interrupt enable. */
- wmb();
- current_descriptor->cmd_sts = command_status |
- ETH_BUFFER_OWNED_BY_DMA | ETH_TX_ENABLE_INTERRUPT;
-
- wmb();
- ETH_ENABLE_TX_QUEUE(mp->port_num);
-
- /* Finish Tx packet. Update first desc in case of Tx resource error */
- tx_desc_curr = (tx_desc_curr + 1) % mp->tx_ring_size;
-
- /* Update the current descriptor */
- mp->tx_curr_desc_q = tx_desc_curr;
-
- /* Check for ring index overlap in the Tx desc ring */
- if (tx_desc_curr == tx_desc_used) {
- mp->tx_resource_err = 1;
- return ETH_QUEUE_LAST_RESOURCE;
- }
+ int val;
+ struct mv643xx_private *mp = netdev_priv(dev);
- return ETH_OK;
+ eth_port_read_smi_reg(mp->port_num, location, &val);
+ return val;
}
-#endif
-/*
- * eth_tx_return_desc - Free all used Tx descriptors
- *
- * DESCRIPTION:
- * This routine returns the transmitted packet information to the caller.
- * It uses the 'first' index to support Tx desc return in case a transmit
- * of a packet spanned over multiple buffer still in process.
- * In case the Tx queue was in "resource error" condition, where there are
- * no available Tx resources, the function resets the resource error flag.
- *
- * INPUT:
- * struct mv643xx_private *mp Ethernet Port Control srtuct.
- * struct pkt_info *p_pkt_info User packet buffer.
- *
- * OUTPUT:
- * Tx ring 'first' and 'used' indexes are updated.
- *
- * RETURN:
- * ETH_ERROR in case the routine can not access Tx desc ring.
- * ETH_RETRY in case there is transmission in process.
- * ETH_END_OF_JOB if the routine has nothing to release.
- * ETH_OK otherwise.
- *
- */
-static ETH_FUNC_RET_STATUS eth_tx_return_desc(struct mv643xx_private *mp,
- struct pkt_info *p_pkt_info)
+static void mv643xx_mdio_write(struct net_device *dev, int phy_id, int location, int val)
{
- int tx_desc_used;
-#ifdef MV643XX_CHECKSUM_OFFLOAD_TX
- int tx_busy_desc = mp->tx_first_desc_q;
-#else
- int tx_busy_desc = mp->tx_curr_desc_q;
-#endif
- struct eth_tx_desc *p_tx_desc_used;
- unsigned int command_status;
-
- /* Get the Tx Desc ring indexes */
- tx_desc_used = mp->tx_used_desc_q;
-
- p_tx_desc_used = &mp->p_tx_desc_area[tx_desc_used];
-
- /* Sanity check */
- if (p_tx_desc_used == NULL)
- return ETH_ERROR;
-
- /* Stop release. About to overlap the current available Tx descriptor */
- if (tx_desc_used == tx_busy_desc && !mp->tx_resource_err)
- return ETH_END_OF_JOB;
-
- command_status = p_tx_desc_used->cmd_sts;
-
- /* Still transmitting... */
- if (command_status & (ETH_BUFFER_OWNED_BY_DMA))
- return ETH_RETRY;
-
- /* Pass the packet information to the caller */
- p_pkt_info->cmd_sts = command_status;
- p_pkt_info->return_info = mp->tx_skb[tx_desc_used];
- mp->tx_skb[tx_desc_used] = NULL;
-
- /* Update the next descriptor to release. */
- mp->tx_used_desc_q = (tx_desc_used + 1) % mp->tx_ring_size;
-
- /* Any Tx return cancels the Tx resource error status */
- mp->tx_resource_err = 0;
-
- return ETH_OK;
+ struct mv643xx_private *mp = netdev_priv(dev);
+ eth_port_write_smi_reg(mp->port_num, location, val);
}
/*
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;
/* Do not process Rx ring in case of Rx ring resource error */
if (mp->rx_resource_err)
return ETH_QUEUE_FULL;
+ spin_lock_irqsave(&mp->lock, flags);
+
/* 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;
rmb();
/* Nothing to receive... */
- if (command_status & (ETH_BUFFER_OWNED_BY_DMA))
+ if (command_status & (ETH_BUFFER_OWNED_BY_DMA)) {
+ spin_unlock_irqrestore(&mp->lock, flags);
return ETH_END_OF_JOB;
+ }
p_pkt_info->byte_cnt = (p_rx_desc->byte_cnt) - RX_BUF_OFFSET;
p_pkt_info->cmd_sts = command_status;
p_pkt_info->return_info = mp->rx_skb[rx_curr_desc];
p_pkt_info->l4i_chk = p_rx_desc->buf_size;
- /* Clean the return info field to indicate that the packet has been */
- /* moved to the upper layers */
+ /*
+ * Clean the return info field to indicate that the
+ * packet has been moved to the upper layers
+ */
mp->rx_skb[rx_curr_desc] = NULL;
/* Update current index in data structure */
if (rx_next_curr_desc == rx_used_desc)
mp->rx_resource_err = 1;
+ spin_unlock_irqrestore(&mp->lock, flags);
+
return ETH_OK;
}
{
int used_rx_desc; /* Where to return Rx resource */
volatile struct eth_rx_desc *p_used_rx_desc;
+ unsigned long flags;
+
+ spin_lock_irqsave(&mp->lock, flags);
/* Get 'used' Rx descriptor */
used_rx_desc = mp->rx_used_desc_q;
/* Any Rx return cancels the Rx resource error status */
mp->rx_resource_err = 0;
+ spin_unlock_irqrestore(&mp->lock, flags);
+
return ETH_OK;
}
};
#define MV643XX_STAT(m) sizeof(((struct mv643xx_private *)0)->m), \
- offsetof(struct mv643xx_private, m)
+ offsetof(struct mv643xx_private, m)
static const struct mv643xx_stats mv643xx_gstrings_stats[] = {
{ "rx_packets", MV643XX_STAT(stats.rx_packets) },
#define MV643XX_STATS_LEN \
sizeof(mv643xx_gstrings_stats) / sizeof(struct mv643xx_stats)
-static int
-mv643xx_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
-{
- struct mv643xx_private *mp = netdev->priv;
- int port_num = mp->port_num;
- int autoneg = eth_port_autoneg_supported(port_num);
- int mode_10_bit;
- int auto_duplex;
- int half_duplex = 0;
- int full_duplex = 0;
- int auto_speed;
- int speed_10 = 0;
- int speed_100 = 0;
- int speed_1000 = 0;
-
- u32 pcs = mv_read(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num));
- u32 psr = mv_read(MV643XX_ETH_PORT_STATUS_REG(port_num));
-
- mode_10_bit = psr & MV643XX_ETH_PORT_STATUS_MODE_10_BIT;
-
- if (mode_10_bit) {
- ecmd->supported = SUPPORTED_10baseT_Half;
- } else {
- ecmd->supported = (SUPPORTED_10baseT_Half |
- SUPPORTED_10baseT_Full |
- SUPPORTED_100baseT_Half |
- SUPPORTED_100baseT_Full |
- SUPPORTED_1000baseT_Full |
- (autoneg ? SUPPORTED_Autoneg : 0) |
- SUPPORTED_TP);
-
- auto_duplex = !(pcs & MV643XX_ETH_DISABLE_AUTO_NEG_FOR_DUPLX);
- auto_speed = !(pcs & MV643XX_ETH_DISABLE_AUTO_NEG_SPEED_GMII);
-
- ecmd->advertising = ADVERTISED_TP;
-
- if (autoneg) {
- ecmd->advertising |= ADVERTISED_Autoneg;
-
- if (auto_duplex) {
- half_duplex = 1;
- full_duplex = 1;
- } else {
- if (pcs & MV643XX_ETH_SET_FULL_DUPLEX_MODE)
- full_duplex = 1;
- else
- half_duplex = 1;
- }
-
- if (auto_speed) {
- speed_10 = 1;
- speed_100 = 1;
- speed_1000 = 1;
- } else {
- if (pcs & MV643XX_ETH_SET_GMII_SPEED_TO_1000)
- speed_1000 = 1;
- else if (pcs & MV643XX_ETH_SET_MII_SPEED_TO_100)
- speed_100 = 1;
- else
- speed_10 = 1;
- }
-
- if (speed_10 & half_duplex)
- ecmd->advertising |= ADVERTISED_10baseT_Half;
- if (speed_10 & full_duplex)
- ecmd->advertising |= ADVERTISED_10baseT_Full;
- if (speed_100 & half_duplex)
- ecmd->advertising |= ADVERTISED_100baseT_Half;
- if (speed_100 & full_duplex)
- ecmd->advertising |= ADVERTISED_100baseT_Full;
- if (speed_1000)
- ecmd->advertising |= ADVERTISED_1000baseT_Full;
- }
- }
-
- ecmd->port = PORT_TP;
- ecmd->phy_address = ethernet_phy_get(port_num);
-
- ecmd->transceiver = XCVR_EXTERNAL;
-
- if (netif_carrier_ok(netdev)) {
- if (mode_10_bit)
- ecmd->speed = SPEED_10;
- else {
- if (psr & MV643XX_ETH_PORT_STATUS_GMII_1000)
- ecmd->speed = SPEED_1000;
- else if (psr & MV643XX_ETH_PORT_STATUS_MII_100)
- ecmd->speed = SPEED_100;
- else
- ecmd->speed = SPEED_10;
- }
-
- if (psr & MV643XX_ETH_PORT_STATUS_FULL_DUPLEX)
- ecmd->duplex = DUPLEX_FULL;
- else
- ecmd->duplex = DUPLEX_HALF;
- } else {
- ecmd->speed = -1;
- ecmd->duplex = -1;
- }
-
- ecmd->autoneg = autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE;
- return 0;
-}
-
-static void
-mv643xx_get_drvinfo(struct net_device *netdev,
- struct ethtool_drvinfo *drvinfo)
+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);
drvinfo->n_stats = MV643XX_STATS_LEN;
}
-static int
-mv643xx_get_stats_count(struct net_device *netdev)
+static int mv643xx_get_stats_count(struct net_device *netdev)
{
return MV643XX_STATS_LEN;
}
-static void
-mv643xx_get_ethtool_stats(struct net_device *netdev,
- struct ethtool_stats *stats, uint64_t *data)
+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;
eth_update_mib_counters(mp);
- 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 ==
+ 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;
}
}
-static void
-mv643xx_get_strings(struct net_device *netdev, uint32_t stringset, uint8_t *data)
+static void mv643xx_get_strings(struct net_device *netdev, uint32_t stringset,
+ uint8_t *data)
{
int i;
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);
+ memcpy(data + i * ETH_GSTRING_LEN,
+ mv643xx_gstrings_stats[i].stat_string,
+ ETH_GSTRING_LEN);
}
break;
}
}
-static struct ethtool_ops mv643xx_ethtool_ops = {
+static u32 mv643xx_eth_get_link(struct net_device *dev)
+{
+ struct mv643xx_private *mp = netdev_priv(dev);
+
+ return mii_link_ok(&mp->mii);
+}
+
+static int mv643xx_eth_nway_restart(struct net_device *dev)
+{
+ struct mv643xx_private *mp = netdev_priv(dev);
+
+ return mii_nway_restart(&mp->mii);
+}
+
+static int mv643xx_eth_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+{
+ struct mv643xx_private *mp = netdev_priv(dev);
+
+ return generic_mii_ioctl(&mp->mii, if_mii(ifr), cmd, NULL);
+}
+
+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 = ethtool_op_get_link,
+ .get_link = mv643xx_eth_get_link,
.get_sg = ethtool_op_get_sg,
.set_sg = ethtool_op_set_sg,
+ .get_stats_count = mv643xx_get_stats_count,
+ .get_ethtool_stats = mv643xx_get_ethtool_stats,
.get_strings = mv643xx_get_strings,
.get_stats_count = mv643xx_get_stats_count,
.get_ethtool_stats = mv643xx_get_ethtool_stats,
+ .nway_reset = mv643xx_eth_nway_restart,
};
/************* End ethtool support *************************/
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff