diff options
Diffstat (limited to 'drivers/net/mv643xx_eth.c')
-rw-r--r-- | drivers/net/mv643xx_eth.c | 385 |
1 files changed, 312 insertions, 73 deletions
diff --git a/drivers/net/mv643xx_eth.c b/drivers/net/mv643xx_eth.c index 13f11f4..56912ad 100644 --- a/drivers/net/mv643xx_eth.c +++ b/drivers/net/mv643xx_eth.c @@ -53,6 +53,7 @@ #include <linux/mv643xx_eth.h> #include <linux/io.h> #include <linux/types.h> +#include <linux/inet_lro.h> #include <asm/system.h> static char mv643xx_eth_driver_name[] = "mv643xx_eth"; @@ -227,6 +228,12 @@ struct tx_desc { #define RX_ENABLE_INTERRUPT 0x20000000 #define RX_FIRST_DESC 0x08000000 #define RX_LAST_DESC 0x04000000 +#define RX_IP_HDR_OK 0x02000000 +#define RX_PKT_IS_IPV4 0x01000000 +#define RX_PKT_IS_ETHERNETV2 0x00800000 +#define RX_PKT_LAYER4_TYPE_MASK 0x00600000 +#define RX_PKT_LAYER4_TYPE_TCP_IPV4 0x00000000 +#define RX_PKT_IS_VLAN_TAGGED 0x00080000 /* TX descriptor command */ #define TX_ENABLE_INTERRUPT 0x00800000 @@ -286,6 +293,9 @@ struct mv643xx_eth_shared_private { #define TX_BW_CONTROL_OLD_LAYOUT 1 #define TX_BW_CONTROL_NEW_LAYOUT 2 +static int mv643xx_eth_open(struct net_device *dev); +static int mv643xx_eth_stop(struct net_device *dev); + /* per-port *****************************************************************/ struct mib_counters { @@ -321,6 +331,12 @@ struct mib_counters { u32 late_collision; }; +struct lro_counters { + u32 lro_aggregated; + u32 lro_flushed; + u32 lro_no_desc; +}; + struct rx_queue { int index; @@ -334,6 +350,11 @@ struct rx_queue { dma_addr_t rx_desc_dma; int rx_desc_area_size; struct sk_buff **rx_skb; + +#ifdef CONFIG_MV643XX_ETH_LRO + struct net_lro_mgr lro_mgr; + struct net_lro_desc lro_arr[8]; +#endif }; struct tx_queue { @@ -369,6 +390,8 @@ struct mv643xx_eth_private { spinlock_t mib_counters_lock; struct mib_counters mib_counters; + struct lro_counters lro_counters; + struct work_struct tx_timeout_task; struct napi_struct napi; @@ -385,7 +408,7 @@ struct mv643xx_eth_private { /* * RX state. */ - int default_rx_ring_size; + int rx_ring_size; unsigned long rx_desc_sram_addr; int rx_desc_sram_size; int rxq_count; @@ -395,7 +418,7 @@ struct mv643xx_eth_private { /* * TX state. */ - int default_tx_ring_size; + int tx_ring_size; unsigned long tx_desc_sram_addr; int tx_desc_sram_size; int txq_count; @@ -493,12 +516,42 @@ static void txq_maybe_wake(struct tx_queue *txq) /* rx napi ******************************************************************/ +#ifdef CONFIG_MV643XX_ETH_LRO +static int +mv643xx_get_skb_header(struct sk_buff *skb, void **iphdr, void **tcph, + u64 *hdr_flags, void *priv) +{ + unsigned long cmd_sts = (unsigned long)priv; + + /* + * Make sure that this packet is Ethernet II, is not VLAN + * tagged, is IPv4, has a valid IP header, and is TCP. + */ + if ((cmd_sts & (RX_IP_HDR_OK | RX_PKT_IS_IPV4 | + RX_PKT_IS_ETHERNETV2 | RX_PKT_LAYER4_TYPE_MASK | + RX_PKT_IS_VLAN_TAGGED)) != + (RX_IP_HDR_OK | RX_PKT_IS_IPV4 | + RX_PKT_IS_ETHERNETV2 | RX_PKT_LAYER4_TYPE_TCP_IPV4)) + return -1; + + skb_reset_network_header(skb); + skb_set_transport_header(skb, ip_hdrlen(skb)); + *iphdr = ip_hdr(skb); + *tcph = tcp_hdr(skb); + *hdr_flags = LRO_IPV4 | LRO_TCP; + + return 0; +} +#endif + static int rxq_process(struct rx_queue *rxq, int budget) { struct mv643xx_eth_private *mp = rxq_to_mp(rxq); struct net_device_stats *stats = &mp->dev->stats; + int lro_flush_needed; int rx; + lro_flush_needed = 0; rx = 0; while (rx < budget && rxq->rx_desc_count) { struct rx_desc *rx_desc; @@ -558,7 +611,15 @@ static int rxq_process(struct rx_queue *rxq, int budget) if (cmd_sts & LAYER_4_CHECKSUM_OK) skb->ip_summed = CHECKSUM_UNNECESSARY; skb->protocol = eth_type_trans(skb, mp->dev); - netif_receive_skb(skb); + +#ifdef CONFIG_MV643XX_ETH_LRO + if (skb->dev->features & NETIF_F_LRO && + skb->ip_summed == CHECKSUM_UNNECESSARY) { + lro_receive_skb(&rxq->lro_mgr, skb, (void *)cmd_sts); + lro_flush_needed = 1; + } else +#endif + netif_receive_skb(skb); continue; @@ -579,6 +640,11 @@ err: dev_kfree_skb(skb); } +#ifdef CONFIG_MV643XX_ETH_LRO + if (lro_flush_needed) + lro_flush_all(&rxq->lro_mgr); +#endif + if (rx < budget) mp->work_rx &= ~(1 << rxq->index); @@ -907,7 +973,7 @@ static int txq_reclaim(struct tx_queue *txq, int budget, int force) if (skb != NULL) { if (skb_queue_len(&mp->rx_recycle) < - mp->default_rx_ring_size && + mp->rx_ring_size && skb_recycle_check(skb, mp->skb_size + dma_get_cache_alignment() - 1)) __skb_queue_head(&mp->rx_recycle, skb); @@ -1158,6 +1224,28 @@ static struct net_device_stats *mv643xx_eth_get_stats(struct net_device *dev) return stats; } +static void mv643xx_eth_grab_lro_stats(struct mv643xx_eth_private *mp) +{ + u32 lro_aggregated = 0; + u32 lro_flushed = 0; + u32 lro_no_desc = 0; + int i; + +#ifdef CONFIG_MV643XX_ETH_LRO + for (i = 0; i < mp->rxq_count; i++) { + struct rx_queue *rxq = mp->rxq + i; + + lro_aggregated += rxq->lro_mgr.stats.aggregated; + lro_flushed += rxq->lro_mgr.stats.flushed; + lro_no_desc += rxq->lro_mgr.stats.no_desc; + } +#endif + + mp->lro_counters.lro_aggregated = lro_aggregated; + mp->lro_counters.lro_flushed = lro_flushed; + mp->lro_counters.lro_no_desc = lro_no_desc; +} + static inline u32 mib_read(struct mv643xx_eth_private *mp, int offset) { return rdl(mp, MIB_COUNTERS(mp->port_num) + offset); @@ -1221,6 +1309,85 @@ static void mib_counters_timer_wrapper(unsigned long _mp) } +/* interrupt coalescing *****************************************************/ +/* + * Hardware coalescing parameters are set in units of 64 t_clk + * cycles. I.e.: + * + * coal_delay_in_usec = 64000000 * register_value / t_clk_rate + * + * register_value = coal_delay_in_usec * t_clk_rate / 64000000 + * + * In the ->set*() methods, we round the computed register value + * to the nearest integer. + */ +static unsigned int get_rx_coal(struct mv643xx_eth_private *mp) +{ + u32 val = rdlp(mp, SDMA_CONFIG); + u64 temp; + + if (mp->shared->extended_rx_coal_limit) + temp = ((val & 0x02000000) >> 10) | ((val & 0x003fff80) >> 7); + else + temp = (val & 0x003fff00) >> 8; + + temp *= 64000000; + do_div(temp, mp->shared->t_clk); + + return (unsigned int)temp; +} + +static void set_rx_coal(struct mv643xx_eth_private *mp, unsigned int usec) +{ + u64 temp; + u32 val; + + temp = (u64)usec * mp->shared->t_clk; + temp += 31999999; + do_div(temp, 64000000); + + val = rdlp(mp, SDMA_CONFIG); + if (mp->shared->extended_rx_coal_limit) { + if (temp > 0xffff) + temp = 0xffff; + val &= ~0x023fff80; + val |= (temp & 0x8000) << 10; + val |= (temp & 0x7fff) << 7; + } else { + if (temp > 0x3fff) + temp = 0x3fff; + val &= ~0x003fff00; + val |= (temp & 0x3fff) << 8; + } + wrlp(mp, SDMA_CONFIG, val); +} + +static unsigned int get_tx_coal(struct mv643xx_eth_private *mp) +{ + u64 temp; + + temp = (rdlp(mp, TX_FIFO_URGENT_THRESHOLD) & 0x3fff0) >> 4; + temp *= 64000000; + do_div(temp, mp->shared->t_clk); + + return (unsigned int)temp; +} + +static void set_tx_coal(struct mv643xx_eth_private *mp, unsigned int usec) +{ + u64 temp; + + temp = (u64)usec * mp->shared->t_clk; + temp += 31999999; + do_div(temp, 64000000); + + if (temp > 0x3fff) + temp = 0x3fff; + + wrlp(mp, TX_FIFO_URGENT_THRESHOLD, temp << 4); +} + + /* ethtool ******************************************************************/ struct mv643xx_eth_stats { char stat_string[ETH_GSTRING_LEN]; @@ -1237,6 +1404,10 @@ struct mv643xx_eth_stats { { #m, FIELD_SIZEOF(struct mib_counters, m), \ -1, offsetof(struct mv643xx_eth_private, mib_counters.m) } +#define LROSTAT(m) \ + { #m, FIELD_SIZEOF(struct lro_counters, m), \ + -1, offsetof(struct mv643xx_eth_private, lro_counters.m) } + static const struct mv643xx_eth_stats mv643xx_eth_stats[] = { SSTAT(rx_packets), SSTAT(tx_packets), @@ -1276,12 +1447,15 @@ static const struct mv643xx_eth_stats mv643xx_eth_stats[] = { MIBSTAT(bad_crc_event), MIBSTAT(collision), MIBSTAT(late_collision), + LROSTAT(lro_aggregated), + LROSTAT(lro_flushed), + LROSTAT(lro_no_desc), }; static int -mv643xx_eth_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) +mv643xx_eth_get_settings_phy(struct mv643xx_eth_private *mp, + struct ethtool_cmd *cmd) { - struct mv643xx_eth_private *mp = netdev_priv(dev); int err; err = phy_read_status(mp->phy); @@ -1298,10 +1472,9 @@ mv643xx_eth_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) } static int -mv643xx_eth_get_settings_phyless(struct net_device *dev, +mv643xx_eth_get_settings_phyless(struct mv643xx_eth_private *mp, struct ethtool_cmd *cmd) { - struct mv643xx_eth_private *mp = netdev_priv(dev); u32 port_status; port_status = rdlp(mp, PORT_STATUS); @@ -1334,10 +1507,24 @@ mv643xx_eth_get_settings_phyless(struct net_device *dev, } static int +mv643xx_eth_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) +{ + struct mv643xx_eth_private *mp = netdev_priv(dev); + + if (mp->phy != NULL) + return mv643xx_eth_get_settings_phy(mp, cmd); + else + return mv643xx_eth_get_settings_phyless(mp, cmd); +} + +static int mv643xx_eth_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) { struct mv643xx_eth_private *mp = netdev_priv(dev); + if (mp->phy == NULL) + return -EINVAL; + /* * The MAC does not support 1000baseT_Half. */ @@ -1346,13 +1533,6 @@ mv643xx_eth_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) return phy_ethtool_sset(mp->phy, cmd); } -static int -mv643xx_eth_set_settings_phyless(struct net_device *dev, - struct ethtool_cmd *cmd) -{ - return -EINVAL; -} - static void mv643xx_eth_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *drvinfo) { @@ -1367,17 +1547,95 @@ static int mv643xx_eth_nway_reset(struct net_device *dev) { struct mv643xx_eth_private *mp = netdev_priv(dev); + if (mp->phy == NULL) + return -EINVAL; + return genphy_restart_aneg(mp->phy); } -static int mv643xx_eth_nway_reset_phyless(struct net_device *dev) +static u32 mv643xx_eth_get_link(struct net_device *dev) { - return -EINVAL; + return !!netif_carrier_ok(dev); } -static u32 mv643xx_eth_get_link(struct net_device *dev) +static int +mv643xx_eth_get_coalesce(struct net_device *dev, struct ethtool_coalesce *ec) { - return !!netif_carrier_ok(dev); + struct mv643xx_eth_private *mp = netdev_priv(dev); + + ec->rx_coalesce_usecs = get_rx_coal(mp); + ec->tx_coalesce_usecs = get_tx_coal(mp); + + return 0; +} + +static int +mv643xx_eth_set_coalesce(struct net_device *dev, struct ethtool_coalesce *ec) +{ + struct mv643xx_eth_private *mp = netdev_priv(dev); + + set_rx_coal(mp, ec->rx_coalesce_usecs); + set_tx_coal(mp, ec->tx_coalesce_usecs); + + return 0; +} + +static void +mv643xx_eth_get_ringparam(struct net_device *dev, struct ethtool_ringparam *er) +{ + struct mv643xx_eth_private *mp = netdev_priv(dev); + + er->rx_max_pending = 4096; + er->tx_max_pending = 4096; + er->rx_mini_max_pending = 0; + er->rx_jumbo_max_pending = 0; + + er->rx_pending = mp->rx_ring_size; + er->tx_pending = mp->tx_ring_size; + er->rx_mini_pending = 0; + er->rx_jumbo_pending = 0; +} + +static int +mv643xx_eth_set_ringparam(struct net_device *dev, struct ethtool_ringparam *er) +{ + struct mv643xx_eth_private *mp = netdev_priv(dev); + + if (er->rx_mini_pending || er->rx_jumbo_pending) + return -EINVAL; + + mp->rx_ring_size = er->rx_pending < 4096 ? er->rx_pending : 4096; + mp->tx_ring_size = er->tx_pending < 4096 ? er->tx_pending : 4096; + + if (netif_running(dev)) { + mv643xx_eth_stop(dev); + if (mv643xx_eth_open(dev)) { + dev_printk(KERN_ERR, &dev->dev, + "fatal error on re-opening device after " + "ring param change\n"); + return -ENOMEM; + } + } + + return 0; +} + +static u32 +mv643xx_eth_get_rx_csum(struct net_device *dev) +{ + struct mv643xx_eth_private *mp = netdev_priv(dev); + + return !!(rdlp(mp, PORT_CONFIG) & 0x02000000); +} + +static int +mv643xx_eth_set_rx_csum(struct net_device *dev, u32 rx_csum) +{ + struct mv643xx_eth_private *mp = netdev_priv(dev); + + wrlp(mp, PORT_CONFIG, rx_csum ? 0x02000000 : 0x00000000); + + return 0; } static void mv643xx_eth_get_strings(struct net_device *dev, @@ -1403,6 +1661,7 @@ static void mv643xx_eth_get_ethtool_stats(struct net_device *dev, mv643xx_eth_get_stats(dev); mib_counters_update(mp); + mv643xx_eth_grab_lro_stats(mp); for (i = 0; i < ARRAY_SIZE(mv643xx_eth_stats); i++) { const struct mv643xx_eth_stats *stat; @@ -1434,21 +1693,18 @@ static const struct ethtool_ops mv643xx_eth_ethtool_ops = { .get_drvinfo = mv643xx_eth_get_drvinfo, .nway_reset = mv643xx_eth_nway_reset, .get_link = mv643xx_eth_get_link, + .get_coalesce = mv643xx_eth_get_coalesce, + .set_coalesce = mv643xx_eth_set_coalesce, + .get_ringparam = mv643xx_eth_get_ringparam, + .set_ringparam = mv643xx_eth_set_ringparam, + .get_rx_csum = mv643xx_eth_get_rx_csum, + .set_rx_csum = mv643xx_eth_set_rx_csum, + .set_tx_csum = ethtool_op_set_tx_csum, .set_sg = ethtool_op_set_sg, .get_strings = mv643xx_eth_get_strings, .get_ethtool_stats = mv643xx_eth_get_ethtool_stats, - .get_sset_count = mv643xx_eth_get_sset_count, -}; - -static const struct ethtool_ops mv643xx_eth_ethtool_ops_phyless = { - .get_settings = mv643xx_eth_get_settings_phyless, - .set_settings = mv643xx_eth_set_settings_phyless, - .get_drvinfo = mv643xx_eth_get_drvinfo, - .nway_reset = mv643xx_eth_nway_reset_phyless, - .get_link = mv643xx_eth_get_link, - .set_sg = ethtool_op_set_sg, - .get_strings = mv643xx_eth_get_strings, - .get_ethtool_stats = mv643xx_eth_get_ethtool_stats, + .get_flags = ethtool_op_get_flags, + .set_flags = ethtool_op_set_flags, .get_sset_count = mv643xx_eth_get_sset_count, }; @@ -1637,7 +1893,7 @@ static int rxq_init(struct mv643xx_eth_private *mp, int index) rxq->index = index; - rxq->rx_ring_size = mp->default_rx_ring_size; + rxq->rx_ring_size = mp->rx_ring_size; rxq->rx_desc_count = 0; rxq->rx_curr_desc = 0; @@ -1683,6 +1939,21 @@ static int rxq_init(struct mv643xx_eth_private *mp, int index) nexti * sizeof(struct rx_desc); } +#ifdef CONFIG_MV643XX_ETH_LRO + rxq->lro_mgr.dev = mp->dev; + memset(&rxq->lro_mgr.stats, 0, sizeof(rxq->lro_mgr.stats)); + rxq->lro_mgr.features = LRO_F_NAPI; + rxq->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY; + rxq->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY; + rxq->lro_mgr.max_desc = ARRAY_SIZE(rxq->lro_arr); + rxq->lro_mgr.max_aggr = 32; + rxq->lro_mgr.frag_align_pad = 0; + rxq->lro_mgr.lro_arr = rxq->lro_arr; + rxq->lro_mgr.get_skb_header = mv643xx_get_skb_header; + + memset(&rxq->lro_arr, 0, sizeof(rxq->lro_arr)); +#endif + return 0; @@ -1737,7 +2008,7 @@ static int txq_init(struct mv643xx_eth_private *mp, int index) txq->index = index; - txq->tx_ring_size = mp->default_tx_ring_size; + txq->tx_ring_size = mp->tx_ring_size; txq->tx_desc_count = 0; txq->tx_curr_desc = 0; @@ -2061,36 +2332,6 @@ static void port_start(struct mv643xx_eth_private *mp) } } -static void set_rx_coal(struct mv643xx_eth_private *mp, unsigned int delay) -{ - unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64; - u32 val; - - val = rdlp(mp, SDMA_CONFIG); - if (mp->shared->extended_rx_coal_limit) { - if (coal > 0xffff) - coal = 0xffff; - val &= ~0x023fff80; - val |= (coal & 0x8000) << 10; - val |= (coal & 0x7fff) << 7; - } else { - if (coal > 0x3fff) - coal = 0x3fff; - val &= ~0x003fff00; - val |= (coal & 0x3fff) << 8; - } - wrlp(mp, SDMA_CONFIG, val); -} - -static void set_tx_coal(struct mv643xx_eth_private *mp, unsigned int delay) -{ - unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64; - - if (coal > 0x3fff) - coal = 0x3fff; - wrlp(mp, TX_FIFO_URGENT_THRESHOLD, (coal & 0x3fff) << 4); -} - static void mv643xx_eth_recalc_skb_size(struct mv643xx_eth_private *mp) { int skb_size; @@ -2531,17 +2772,17 @@ static void set_params(struct mv643xx_eth_private *mp, else uc_addr_get(mp, dev->dev_addr); - mp->default_rx_ring_size = DEFAULT_RX_QUEUE_SIZE; + mp->rx_ring_size = DEFAULT_RX_QUEUE_SIZE; if (pd->rx_queue_size) - mp->default_rx_ring_size = pd->rx_queue_size; + mp->rx_ring_size = pd->rx_queue_size; mp->rx_desc_sram_addr = pd->rx_sram_addr; mp->rx_desc_sram_size = pd->rx_sram_size; mp->rxq_count = pd->rx_queue_count ? : 1; - mp->default_tx_ring_size = DEFAULT_TX_QUEUE_SIZE; + mp->tx_ring_size = DEFAULT_TX_QUEUE_SIZE; if (pd->tx_queue_size) - mp->default_tx_ring_size = pd->tx_queue_size; + mp->tx_ring_size = pd->tx_queue_size; mp->tx_desc_sram_addr = pd->tx_sram_addr; mp->tx_desc_sram_size = pd->tx_sram_size; @@ -2588,7 +2829,7 @@ static void phy_init(struct mv643xx_eth_private *mp, int speed, int duplex) phy_reset(mp); - phy_attach(mp->dev, phy->dev.bus_id, 0, PHY_INTERFACE_MODE_GMII); + phy_attach(mp->dev, dev_name(&phy->dev), 0, PHY_INTERFACE_MODE_GMII); if (speed == 0) { phy->autoneg = AUTONEG_ENABLE; @@ -2672,12 +2913,10 @@ static int mv643xx_eth_probe(struct platform_device *pdev) if (pd->phy_addr != MV643XX_ETH_PHY_NONE) mp->phy = phy_scan(mp, pd->phy_addr); - if (mp->phy != NULL) { + if (mp->phy != NULL) phy_init(mp, pd->speed, pd->duplex); - SET_ETHTOOL_OPS(dev, &mv643xx_eth_ethtool_ops); - } else { - SET_ETHTOOL_OPS(dev, &mv643xx_eth_ethtool_ops_phyless); - } + + SET_ETHTOOL_OPS(dev, &mv643xx_eth_ethtool_ops); init_pscr(mp, pd->speed, pd->duplex); |