diff options
Diffstat (limited to 'drivers/net/ethernet/freescale/gianfar.c')
-rw-r--r-- | drivers/net/ethernet/freescale/gianfar.c | 178 |
1 files changed, 13 insertions, 165 deletions
diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c index 3ec4d9fddd52..f2945abdb041 100644 --- a/drivers/net/ethernet/freescale/gianfar.c +++ b/drivers/net/ethernet/freescale/gianfar.c @@ -175,10 +175,7 @@ static void gfar_mac_rx_config(struct gfar_private *priv) if (priv->rx_filer_enable) { rctrl |= RCTRL_FILREN | RCTRL_PRSDEP_INIT; /* Program the RIR0 reg with the required distribution */ - if (priv->poll_mode == GFAR_SQ_POLLING) - gfar_write(®s->rir0, DEFAULT_2RXQ_RIR0); - else /* GFAR_MQ_POLLING */ - gfar_write(®s->rir0, DEFAULT_8RXQ_RIR0); + gfar_write(®s->rir0, DEFAULT_2RXQ_RIR0); } /* Restore PROMISC mode */ @@ -521,29 +518,9 @@ static int gfar_parse_group(struct device_node *np, grp->priv = priv; spin_lock_init(&grp->grplock); if (priv->mode == MQ_MG_MODE) { - u32 rxq_mask, txq_mask; - int ret; - + /* One Q per interrupt group: Q0 to G0, Q1 to G1 */ grp->rx_bit_map = (DEFAULT_MAPPING >> priv->num_grps); grp->tx_bit_map = (DEFAULT_MAPPING >> priv->num_grps); - - ret = of_property_read_u32(np, "fsl,rx-bit-map", &rxq_mask); - if (!ret) { - grp->rx_bit_map = rxq_mask ? - rxq_mask : (DEFAULT_MAPPING >> priv->num_grps); - } - - ret = of_property_read_u32(np, "fsl,tx-bit-map", &txq_mask); - if (!ret) { - grp->tx_bit_map = txq_mask ? - txq_mask : (DEFAULT_MAPPING >> priv->num_grps); - } - - if (priv->poll_mode == GFAR_SQ_POLLING) { - /* One Q per interrupt group: Q0 to G0, Q1 to G1 */ - grp->rx_bit_map = (DEFAULT_MAPPING >> priv->num_grps); - grp->tx_bit_map = (DEFAULT_MAPPING >> priv->num_grps); - } } else { grp->rx_bit_map = 0xFF; grp->tx_bit_map = 0xFF; @@ -640,7 +617,6 @@ static phy_interface_t gfar_get_interface(struct net_device *dev) static int gfar_of_init(struct platform_device *ofdev, struct net_device **pdev) { const char *model; - const void *mac_addr; int err = 0, i; phy_interface_t interface; struct net_device *dev = NULL; @@ -650,18 +626,15 @@ static int gfar_of_init(struct platform_device *ofdev, struct net_device **pdev) u32 stash_len = 0; u32 stash_idx = 0; unsigned int num_tx_qs, num_rx_qs; - unsigned short mode, poll_mode; + unsigned short mode; if (!np) return -ENODEV; - if (of_device_is_compatible(np, "fsl,etsec2")) { + if (of_device_is_compatible(np, "fsl,etsec2")) mode = MQ_MG_MODE; - poll_mode = GFAR_SQ_POLLING; - } else { + else mode = SQ_SG_MODE; - poll_mode = GFAR_SQ_POLLING; - } if (mode == SQ_SG_MODE) { num_tx_qs = 1; @@ -677,22 +650,8 @@ static int gfar_of_init(struct platform_device *ofdev, struct net_device **pdev) return -EINVAL; } - if (poll_mode == GFAR_SQ_POLLING) { - num_tx_qs = num_grps; /* one txq per int group */ - num_rx_qs = num_grps; /* one rxq per int group */ - } else { /* GFAR_MQ_POLLING */ - u32 tx_queues, rx_queues; - int ret; - - /* parse the num of HW tx and rx queues */ - ret = of_property_read_u32(np, "fsl,num_tx_queues", - &tx_queues); - num_tx_qs = ret ? 1 : tx_queues; - - ret = of_property_read_u32(np, "fsl,num_rx_queues", - &rx_queues); - num_rx_qs = ret ? 1 : rx_queues; - } + num_tx_qs = num_grps; /* one txq per int group */ + num_rx_qs = num_grps; /* one rxq per int group */ } if (num_tx_qs > MAX_TX_QS) { @@ -718,7 +677,6 @@ static int gfar_of_init(struct platform_device *ofdev, struct net_device **pdev) priv->ndev = dev; priv->mode = mode; - priv->poll_mode = poll_mode; priv->num_tx_queues = num_tx_qs; netif_set_real_num_rx_queues(dev, num_rx_qs); @@ -782,11 +740,8 @@ static int gfar_of_init(struct platform_device *ofdev, struct net_device **pdev) if (stash_len || stash_idx) priv->device_flags |= FSL_GIANFAR_DEV_HAS_BUF_STASHING; - mac_addr = of_get_mac_address(np); - - if (!IS_ERR(mac_addr)) { - ether_addr_copy(dev->dev_addr, mac_addr); - } else { + err = of_get_mac_address(np, dev->dev_addr); + if (err) { eth_hw_addr_random(dev); dev_info(&ofdev->dev, "Using random MAC address: %pM\n", dev->dev_addr); } @@ -2695,106 +2650,6 @@ static int gfar_poll_tx_sq(struct napi_struct *napi, int budget) return 0; } -static int gfar_poll_rx(struct napi_struct *napi, int budget) -{ - struct gfar_priv_grp *gfargrp = - container_of(napi, struct gfar_priv_grp, napi_rx); - struct gfar_private *priv = gfargrp->priv; - struct gfar __iomem *regs = gfargrp->regs; - struct gfar_priv_rx_q *rx_queue = NULL; - int work_done = 0, work_done_per_q = 0; - int i, budget_per_q = 0; - unsigned long rstat_rxf; - int num_act_queues; - - /* Clear IEVENT, so interrupts aren't called again - * because of the packets that have already arrived - */ - gfar_write(®s->ievent, IEVENT_RX_MASK); - - rstat_rxf = gfar_read(®s->rstat) & RSTAT_RXF_MASK; - - num_act_queues = bitmap_weight(&rstat_rxf, MAX_RX_QS); - if (num_act_queues) - budget_per_q = budget/num_act_queues; - - for_each_set_bit(i, &gfargrp->rx_bit_map, priv->num_rx_queues) { - /* skip queue if not active */ - if (!(rstat_rxf & (RSTAT_CLEAR_RXF0 >> i))) - continue; - - rx_queue = priv->rx_queue[i]; - work_done_per_q = - gfar_clean_rx_ring(rx_queue, budget_per_q); - work_done += work_done_per_q; - - /* finished processing this queue */ - if (work_done_per_q < budget_per_q) { - /* clear active queue hw indication */ - gfar_write(®s->rstat, - RSTAT_CLEAR_RXF0 >> i); - num_act_queues--; - - if (!num_act_queues) - break; - } - } - - if (!num_act_queues) { - u32 imask; - napi_complete_done(napi, work_done); - - /* Clear the halt bit in RSTAT */ - gfar_write(®s->rstat, gfargrp->rstat); - - spin_lock_irq(&gfargrp->grplock); - imask = gfar_read(®s->imask); - imask |= IMASK_RX_DEFAULT; - gfar_write(®s->imask, imask); - spin_unlock_irq(&gfargrp->grplock); - } - - return work_done; -} - -static int gfar_poll_tx(struct napi_struct *napi, int budget) -{ - struct gfar_priv_grp *gfargrp = - container_of(napi, struct gfar_priv_grp, napi_tx); - struct gfar_private *priv = gfargrp->priv; - struct gfar __iomem *regs = gfargrp->regs; - struct gfar_priv_tx_q *tx_queue = NULL; - int has_tx_work = 0; - int i; - - /* Clear IEVENT, so interrupts aren't called again - * because of the packets that have already arrived - */ - gfar_write(®s->ievent, IEVENT_TX_MASK); - - for_each_set_bit(i, &gfargrp->tx_bit_map, priv->num_tx_queues) { - tx_queue = priv->tx_queue[i]; - /* run Tx cleanup to completion */ - if (tx_queue->tx_skbuff[tx_queue->skb_dirtytx]) { - gfar_clean_tx_ring(tx_queue); - has_tx_work = 1; - } - } - - if (!has_tx_work) { - u32 imask; - napi_complete(napi); - - spin_lock_irq(&gfargrp->grplock); - imask = gfar_read(®s->imask); - imask |= IMASK_TX_DEFAULT; - gfar_write(®s->imask, imask); - spin_unlock_irq(&gfargrp->grplock); - } - - return 0; -} - /* GFAR error interrupt handler */ static irqreturn_t gfar_error(int irq, void *grp_id) { @@ -3352,17 +3207,10 @@ static int gfar_probe(struct platform_device *ofdev) /* Register for napi ...We are registering NAPI for each grp */ for (i = 0; i < priv->num_grps; i++) { - if (priv->poll_mode == GFAR_SQ_POLLING) { - netif_napi_add(dev, &priv->gfargrp[i].napi_rx, - gfar_poll_rx_sq, GFAR_DEV_WEIGHT); - netif_tx_napi_add(dev, &priv->gfargrp[i].napi_tx, - gfar_poll_tx_sq, 2); - } else { - netif_napi_add(dev, &priv->gfargrp[i].napi_rx, - gfar_poll_rx, GFAR_DEV_WEIGHT); - netif_tx_napi_add(dev, &priv->gfargrp[i].napi_tx, - gfar_poll_tx, 2); - } + netif_napi_add(dev, &priv->gfargrp[i].napi_rx, + gfar_poll_rx_sq, GFAR_DEV_WEIGHT); + netif_tx_napi_add(dev, &priv->gfargrp[i].napi_tx, + gfar_poll_tx_sq, 2); } if (priv->device_flags & FSL_GIANFAR_DEV_HAS_CSUM) { |