X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fnet%2Fmv643xx_eth.c;h=411f4d809c477d99175ee0eaa10257938a08d407;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=0405e1f0d3df183fe004173091aed6ca103751e4;hpb=f7f1b0f1e2fbadeab12d24236000e778aa9b1ead;p=linux-2.6.git diff --git a/drivers/net/mv643xx_eth.c b/drivers/net/mv643xx_eth.c index 0405e1f0d..411f4d809 100644 --- a/drivers/net/mv643xx_eth.c +++ b/drivers/net/mv643xx_eth.c @@ -6,11 +6,11 @@ * 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 * - * Copyright (C) 2004-2005 MontaVista Software, Inc. + * Copyright (C) 2004-2006 MontaVista Software, Inc. * Dale Farnsworth * * Copyright (C) 2004 Steven J. Hill @@ -32,6 +32,8 @@ */ #include #include +#include +#include #include #include #include @@ -39,6 +41,8 @@ #include #include #include +#include + #include #include #include @@ -46,47 +50,30 @@ #include #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 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 struct ethtool_ops mv643xx_ethtool_ops; static char mv643xx_driver_name[] = "mv643xx_eth"; @@ -95,7 +82,7 @@ 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) { @@ -123,15 +110,8 @@ static inline void mv_write(int offset, u32 data) */ 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; /* @@ -141,78 +121,64 @@ static int mv643xx_eth_change_mtu(struct net_device *dev, int 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 + ETH_DMA_ALIGN); if (!skb) break; - mp->rx_ring_skbs++; + mp->rx_desc_count++; + unaligned = (u32)skb->data & (ETH_DMA_ALIGN - 1); + if (unaligned) + skb_reserve(skb, ETH_DMA_ALIGN - 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 @@ -221,13 +187,9 @@ static void mv643xx_eth_rx_task(void *data) * 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); } /* @@ -244,8 +206,7 @@ static void mv643xx_eth_update_mac_address(struct net_device *dev) 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); } /* @@ -261,12 +222,14 @@ 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); + 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); } /* @@ -318,76 +281,90 @@ static void mv643xx_eth_tx_timeout_task(struct net_device *dev) { struct mv643xx_private *mp = netdev_priv(dev); - netif_device_detach(dev); + if (!netif_running(dev)) + return; + + netif_stop_queue(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 +/** + * mv643xx_eth_free_tx_descs - Free the tx desc data for completed descriptors * - * Input : dev - a pointer to the required interface - * - * 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_index = mp->tx_used_desc_q; + desc = &mp->p_tx_desc_area[tx_index]; + cmd_sts = desc->cmd_sts; - if (!(eth_int_cause_ext & (BIT0 | BIT8))) - return released; + 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--; - spin_lock(&mp->lock); + addr = desc->buf_ptr; + count = desc->byte_cnt; + skb = mp->tx_skb[tx_index]; + if (skb) + mp->tx_skb[tx_index] = NULL; + + spin_unlock_irqrestore(&mp->lock, flags); - /* Check only queue 0 */ - while (eth_tx_return_desc(mp, &pkt_info) == ETH_OK) { - if (pkt_info.cmd_sts & BIT0) { + 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); + 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); - dev_kfree_skb_irq(pkt_info.return_info); - released = 0; + if (skb) + dev_kfree_skb_irq(skb); - /* - * 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); + released = 1; } - spin_unlock(&mp->lock); - 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 * @@ -399,11 +376,7 @@ static int mv643xx_eth_free_tx_queue(struct net_device *dev, * * 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; @@ -411,17 +384,14 @@ static int mv643xx_eth_receive_queue(struct net_device *dev) 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) { + 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; @@ -467,11 +437,63 @@ static int mv643xx_eth_receive_queue(struct net_device *dev) 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 * @@ -484,7 +506,7 @@ static int mv643xx_eth_receive_queue(struct net_device *dev) */ static irqreturn_t mv643xx_eth_int_handler(int irq, void *dev_id, - struct pt_regs *regs) + struct pt_regs *regs) { struct net_device *dev = (struct net_device *)dev_id; struct mv643xx_private *mp = netdev_priv(dev); @@ -493,74 +515,52 @@ static irqreturn_t mv643xx_eth_int_handler(int irq, void *dev_id, /* 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. @@ -646,56 +646,6 @@ static unsigned int eth_port_set_tx_coal(unsigned int eth_port_num, return coal; } -/* - * 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. * @@ -736,9 +686,6 @@ static void ether_init_rx_desc_ring(struct mv643xx_private *mp) 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; } /* @@ -778,69 +725,90 @@ static void ether_init_tx_desc_ring(struct mv643xx_private *mp) 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); +} - /* Add the queue to the list of Tx queues of this port */ - mp->port_tx_queue_command |= 1; +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; } -/* Helper function for mv643xx_eth_open */ -static int mv643xx_eth_real_open(struct net_device *dev) +static int mv643xx_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) { struct mv643xx_private *mp = netdev_priv(dev); - unsigned int port_num = mp->port_num; - unsigned int size; + int err; - /* Stop RX Queues */ - mv_write(MV643XX_ETH_RECEIVE_QUEUE_COMMAND_REG(port_num), 0x0000ff00); + spin_lock_irq(&mp->lock); + err = mii_ethtool_gset(&mp->mii, cmd); + spin_unlock_irq(&mp->lock); - /* Clear the ethernet port interrupts */ - mv_write(MV643XX_ETH_INTERRUPT_CAUSE_REG(port_num), 0); - mv_write(MV643XX_ETH_INTERRUPT_CAUSE_EXTEND_REG(port_num), 0); + /* The PHY may support 1000baseT_Half, but the mv643xx does not */ + cmd->supported &= ~SUPPORTED_1000baseT_Half; + cmd->advertising &= ~ADVERTISED_1000baseT_Half; - /* Unmask RX buffer and TX end interrupt */ - mv_write(MV643XX_ETH_INTERRUPT_MASK_REG(port_num), - INT_CAUSE_UNMASK_ALL); + return err; +} - /* Unmask phy and link status changes interrupts */ - mv_write(MV643XX_ETH_INTERRUPT_EXTEND_MASK_REG(port_num), - INT_CAUSE_UNMASK_ALL_EXT); +/* + * 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. + */ - /* Set the MAC Address */ - memcpy(mp->port_mac_addr, dev->dev_addr, 6); +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; - eth_port_init(mp); + 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); + return -EAGAIN; + } - INIT_WORK(&mp->rx_task, (void (*)(void *))mv643xx_eth_rx_task, dev); + eth_port_init(mp); 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; @@ -856,9 +824,8 @@ static int mv643xx_eth_real_open(struct net_device *dev) 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); @@ -866,7 +833,7 @@ static int mv643xx_eth_real_open(struct net_device *dev) 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; @@ -885,21 +852,24 @@ static int mv643xx_eth_real_open(struct net_device *dev) 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); + /* 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); + + eth_port_start(dev); /* Interrupt Coalescing */ @@ -911,30 +881,36 @@ static int mv643xx_eth_real_open(struct net_device *dev) 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) @@ -951,21 +927,21 @@ static void mv643xx_eth_free_rx_rings(struct net_device *dev) 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); @@ -984,79 +960,37 @@ static void mv643xx_eth_free_rx_rings(struct net_device *dev) * 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 * @@ -1067,14 +1001,11 @@ static int mv643xx_poll(struct net_device *dev, int *budget) 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 @@ -1084,7 +1015,6 @@ static int mv643xx_poll(struct net_device *dev, int *budget) 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) @@ -1092,241 +1022,202 @@ static int mv643xx_poll(struct net_device *dev, int *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 +/** + * has_tiny_unaligned_frags - check if skb has any small, unaligned fragments * - * 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 - * - * 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] = 0; + + 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] = 0; + } 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_HW) { + BUG_ON(skb->protocol != ETH_P_IP); + + cmd_sts |= ETH_GEN_TCP_UDP_CHECKSUM | + ETH_GEN_IP_V_4_CHECKSUM | + skb->nh.iph->ihl << ETH_TX_IHL_SHIFT; + + switch (skb->nh.iph->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, GFP_ATOMIC) != 0)) { + 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 */ @@ -1349,6 +1240,51 @@ static struct net_device_stats *mv643xx_eth_get_stats(struct net_device *dev) 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, NULL); + + 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 * @@ -1360,9 +1296,8 @@ static struct net_device_stats *mv643xx_eth_get_stats(struct net_device *dev) * 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; struct mv643xx_private *mp; @@ -1370,12 +1305,15 @@ static int mv643xx_eth_probe(struct device *ddev) u8 *p; struct resource *res; int err; + struct ethtool_cmd cmd; + int duplex = DUPLEX_HALF; + int speed = 0; /* default to auto-negotiation */ 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); @@ -1399,10 +1337,15 @@ static int mv643xx_eth_probe(struct device *ddev) 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 @@ -1411,7 +1354,7 @@ static int mv643xx_eth_probe(struct device *ddev) * 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 @@ -1423,33 +1366,17 @@ static int mv643xx_eth_probe(struct device *ddev) /* 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) + if (pd->mac_addr) 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 (pd->port_config_extend || pd->force_port_config_extend) - mp->port_config_extend = pd->port_config_extend; - - if (pd->port_sdma_config || pd->force_port_sdma_config) - mp->port_sdma_config = pd->port_sdma_config; - - if (pd->port_serial_control || pd->force_port_serial_control) - mp->port_serial_control = pd->port_serial_control; - if (pd->rx_queue_size) mp->rx_ring_size = pd->rx_queue_size; @@ -1465,16 +1392,35 @@ static int mv643xx_eth_probe(struct device *ddev) mp->rx_sram_size = pd->rx_sram_size; mp->rx_sram_addr = pd->rx_sram_addr; } + + duplex = pd->duplex; + speed = pd->speed; } + /* Hook up MII support for ethtool */ + mp->mii.dev = dev; + mp->mii.mdio_read = mv643xx_mdio_read; + mp->mii.mdio_write = mv643xx_mdio_write; + mp->mii.phy_id = ethernet_phy_get(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; @@ -1504,6 +1450,9 @@ static int mv643xx_eth_probe(struct device *ddev) 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: @@ -1512,21 +1461,20 @@ 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"); @@ -1544,7 +1492,7 @@ static int mv643xx_eth_shared_probe(struct device *ddev) } -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; @@ -1552,18 +1500,20 @@ static int mv643xx_eth_shared_remove(struct device *ddev) return 0; } -static struct device_driver mv643xx_eth_driver = { - .name = MV643XX_ETH_NAME, - .bus = &platform_bus_type, +static struct platform_driver mv643xx_eth_driver = { .probe = mv643xx_eth_probe, .remove = mv643xx_eth_remove, + .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, + }, }; /* @@ -1579,11 +1529,11 @@ static int __init mv643xx_init_module(void) { 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; } @@ -1599,8 +1549,8 @@ static int __init mv643xx_init_module(void) */ 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); @@ -1715,26 +1665,9 @@ MODULE_DESCRIPTION("Ethernet driver for Marvell MV643XX"); * 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. @@ -1751,20 +1684,12 @@ MODULE_DESCRIPTION("Ethernet driver for Marvell MV643XX"); * 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 @@ -1792,17 +1717,11 @@ static int eth_port_uc_addr(unsigned int eth_port_num, unsigned char uc_nibble, */ 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); } /* @@ -1824,7 +1743,7 @@ static void eth_port_init(struct mv643xx_private *mp) * 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. @@ -1832,10 +1751,13 @@ static void eth_port_init(struct mv643xx_private *mp) * 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; @@ -1848,34 +1770,45 @@ static void eth_port_start(struct mv643xx_private *mp) (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); + + 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); - 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_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); } /* @@ -1889,8 +1822,9 @@ static void eth_port_start(struct mv643xx_private *mp) * 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. @@ -1901,6 +1835,7 @@ static void eth_port_uc_addr_set(unsigned int eth_port_num, { unsigned int mac_h; unsigned int mac_l; + int table; mac_l = (p_addr[4] << 8) | (p_addr[5]); mac_h = (p_addr[0] << 24) | (p_addr[1] << 16) | (p_addr[2] << 8) | @@ -1910,9 +1845,8 @@ static void eth_port_uc_addr_set(unsigned int eth_port_num, 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); } /* @@ -1951,69 +1885,193 @@ static void eth_port_uc_addr_get(struct net_device *dev, unsigned char *p_addr) } /* - * 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); +} - unicast_reg &= (0x0E << (8 * reg_offset)); +/* + * 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; - mv_write((MV643XX_ETH_DA_FILTER_UNICAST_TABLE_BASE - (eth_port_num) + tbl_offset), unicast_reg); - break; + 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; + } - 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)); + /* 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); +} - unicast_reg |= (0x01 << (8 * reg_offset)); +/* + * Set the entire multicast list based on dev->mc_list. + */ +static void eth_port_set_multicast_list(struct net_device *dev) +{ - mv_write((MV643XX_ETH_DA_FILTER_UNICAST_TABLE_BASE - (eth_port_num) + tbl_offset), unicast_reg); + 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; - break; + /* 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; + } - default: - return 0; + /* 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); + + /* 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); } /* @@ -2038,16 +2096,16 @@ static void eth_port_init_mac_tables(unsigned int eth_port_num) /* 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); } } @@ -2222,146 +2280,111 @@ static void ethernet_phy_reset(unsigned int eth_port_num) 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) +static void eth_port_reset(unsigned int port_num) { - 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); -} + unsigned int reg_data; -static int eth_port_autoneg_supported(unsigned int eth_port_num) -{ - unsigned int phy_reg_data0; + mv643xx_eth_port_disable_tx(port_num); + mv643xx_eth_port_disable_rx(port_num); - eth_port_read_smi_reg(eth_port_num, 0, &phy_reg_data0); + /* Clear all MIB counters */ + eth_clear_mib_counters(port_num); - return phy_reg_data0 & 0x1000; + /* 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); } -static int eth_port_link_is_up(unsigned int eth_port_num) -{ - unsigned int phy_reg_data1; - - eth_port_read_smi_reg(eth_port_num, 1, &phy_reg_data1); - - 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; - - 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 @@ -2468,226 +2491,21 @@ out: } /* - * 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. - * - */ -#ifdef MV643XX_CHECKSUM_OFFLOAD_TX -/* - * Modified to include the first descriptor pointer in case of SG + * Wrappers for MII support library. */ -static ETH_FUNC_RET_STATUS eth_port_send(struct mv643xx_private *mp, - struct pkt_info *p_pkt_info) -{ - 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) +static int mv643xx_mdio_read(struct net_device *dev, int phy_id, int location) { - 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); } /* @@ -2719,11 +2537,14 @@ static ETH_FUNC_RET_STATUS eth_port_receive(struct mv643xx_private *mp, 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; @@ -2735,8 +2556,10 @@ static ETH_FUNC_RET_STATUS eth_port_receive(struct mv643xx_private *mp, 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; @@ -2744,8 +2567,10 @@ static ETH_FUNC_RET_STATUS eth_port_receive(struct mv643xx_private *mp, 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 */ @@ -2756,6 +2581,8 @@ static ETH_FUNC_RET_STATUS eth_port_receive(struct mv643xx_private *mp, if (rx_next_curr_desc == rx_used_desc) mp->rx_resource_err = 1; + spin_unlock_irqrestore(&mp->lock, flags); + return ETH_OK; } @@ -2784,6 +2611,9 @@ static ETH_FUNC_RET_STATUS eth_rx_return_buff(struct mv643xx_private *mp, { 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; @@ -2807,6 +2637,8 @@ static ETH_FUNC_RET_STATUS eth_rx_return_buff(struct mv643xx_private *mp, /* Any Rx return cancels the Rx resource error status */ mp->rx_resource_err = 0; + spin_unlock_irqrestore(&mp->lock, flags); + return ETH_OK; } @@ -2819,7 +2651,7 @@ struct mv643xx_stats { }; #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) }, @@ -2865,114 +2697,8 @@ static const struct mv643xx_stats mv643xx_gstrings_stats[] = { #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); @@ -2981,53 +2707,77 @@ mv643xx_get_drvinfo(struct net_device *netdev, 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++) { + 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 == + 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 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 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_strings = mv643xx_get_strings, .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 *************************/