#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>
#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_MASK_ALL_EXT 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)
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 void mv643xx_eth_set_rx_mode(struct net_device *dev)
{
struct mv643xx_private *mp = netdev_priv(dev);
- u32 config_reg;
- config_reg = ethernet_get_config_reg(mp->port_num);
if (dev->flags & IFF_PROMISC)
- config_reg |= (u32) MV643XX_ETH_UNICAST_PROMISCUOUS_MODE;
+ mp->port_config |= (u32) MV643XX_ETH_UNICAST_PROMISCUOUS_MODE;
else
- config_reg &= ~(u32) MV643XX_ETH_UNICAST_PROMISCUOUS_MODE;
- ethernet_set_config_reg(mp->port_num, config_reg);
+ mp->port_config &= ~(u32) MV643XX_ETH_UNICAST_PROMISCUOUS_MODE;
+
+ mv_write(MV643XX_ETH_PORT_CONFIG_REG(mp->port_num), mp->port_config);
}
/*
dev_kfree_skb_irq(pkt_info.return_info);
released = 0;
-
- /*
- * 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);
struct pkt_info pkt_info;
#ifdef MV643XX_NAPI
- while (eth_port_receive(mp, &pkt_info) == ETH_OK && budget > 0) {
+ while (budget-- > 0 && eth_port_receive(mp, &pkt_info) == ETH_OK) {
#else
while (eth_port_receive(mp, &pkt_info) == ETH_OK) {
#endif
mp->rx_ring_skbs--;
received_packets++;
-#ifdef MV643XX_NAPI
- budget--;
-#endif
+
/* Update statistics. Note byte count includes 4 byte CRC count */
stats->rx_packets++;
stats->rx_bytes += 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 (!skb_shinfo(skb)->nr_frags) {
linear:
if (skb->ip_summed != CHECKSUM_HW) {
+ /* Errata BTS #50, IHL must be 5 if no HW checksum */
pkt_info.cmd_sts = ETH_TX_ENABLE_INTERRUPT |
- ETH_TX_FIRST_DESC | ETH_TX_LAST_DESC;
+ ETH_TX_FIRST_DESC |
+ ETH_TX_LAST_DESC |
+ 5 << ETH_TX_IHL_SHIFT;
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;
+ ETH_TX_FIRST_DESC |
+ ETH_TX_LAST_DESC |
+ ETH_GEN_TCP_UDP_CHECKSUM |
+ ETH_GEN_IP_V_4_CHECKSUM |
+ skb->nh.iph->ihl << ETH_TX_IHL_SHIFT;
/* CPU already calculated pseudo header checksum. */
if (skb->nh.iph->protocol == IPPROTO_UDP) {
pkt_info.cmd_sts |= ETH_UDP_FRAME;
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",
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
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;
+ if (skb->ip_summed != CHECKSUM_HW)
+ /* Errata BTS #50, IHL must be 5 if no HW checksum */
+ pkt_info.cmd_sts = ETH_TX_FIRST_DESC |
+ 5 << ETH_TX_IHL_SHIFT;
+ else {
+ pkt_info.cmd_sts = ETH_TX_FIRST_DESC |
+ ETH_GEN_TCP_UDP_CHECKSUM |
+ ETH_GEN_IP_V_4_CHECKSUM |
+ skb->nh.iph->ihl << ETH_TX_IHL_SHIFT;
/* CPU already calculated pseudo header checksum. */
if (skb->nh.iph->protocol == IPPROTO_UDP) {
pkt_info.cmd_sts |= ETH_UDP_FRAME;
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.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",
return &mp->stats;
}
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static inline void mv643xx_enable_irq(struct mv643xx_private *mp)
+{
+ int port_num = mp->port_num;
+ unsigned long flags;
+
+ spin_lock_irqsave(&mp->lock, flags);
+ 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);
+}
+
+static inline void mv643xx_disable_irq(struct mv643xx_private *mp)
+{
+ int port_num = mp->port_num;
+ unsigned long flags;
+
+ spin_lock_irqsave(&mp->lock, flags);
+ mv_write(MV643XX_ETH_INTERRUPT_MASK_REG(port_num),
+ INT_CAUSE_MASK_ALL);
+ mv_write(MV643XX_ETH_INTERRUPT_EXTEND_MASK_REG(port_num),
+ INT_CAUSE_MASK_ALL_EXT);
+ spin_unlock_irqrestore(&mp->lock, flags);
+}
+
+static void mv643xx_netpoll(struct net_device *netdev)
+{
+ struct mv643xx_private *mp = netdev_priv(netdev);
+
+ mv643xx_disable_irq(mp);
+ mv643xx_eth_int_handler(netdev->irq, netdev, NULL);
+ mv643xx_enable_irq(mp);
+}
+#endif
+
/*/
* mv643xx_eth_probe
*
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;
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:
/* Enable port Rx. */
mv_write(MV643XX_ETH_RECEIVE_QUEUE_COMMAND_REG(port_num),
mp->port_rx_queue_command);
+
+ /* Disable port bandwidth limits by clearing MTU register */
+ mv_write(MV643XX_ETH_MAXIMUM_TRANSMIT_UNIT(port_num), 0);
}
/*
mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num), reg_data);
}
-/*
- * ethernet_set_config_reg - Set specified bits in configuration register.
- *
- * DESCRIPTION:
- * This function sets specified bits in the given ethernet
- * configuration register.
- *
- * 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.
- *
- * 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)
{
return 0;
}
-/*
- * 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
*
return ETH_ERROR;
}
+ mp->tx_ring_skbs++;
+ BUG_ON(mp->tx_ring_skbs > mp->tx_ring_size);
+
/* Get the Tx Desc ring indexes */
tx_desc_curr = mp->tx_curr_desc_q;
tx_desc_used = mp->tx_used_desc_q;
if (mp->tx_resource_err)
return ETH_QUEUE_FULL;
+ mp->tx_ring_skbs++;
+ BUG_ON(mp->tx_ring_skbs > mp->tx_ring_size);
+
/* Get the Tx Desc ring indexes */
tx_desc_curr = mp->tx_curr_desc_q;
tx_desc_used = mp->tx_used_desc_q;
/* Any Tx return cancels the Tx resource error status */
mp->tx_resource_err = 0;
+ BUG_ON(mp->tx_ring_skbs == 0);
+ mp->tx_ring_skbs--;
+
return ETH_OK;
}
projects / linux-2.6 / blobdiff