diff options
Diffstat (limited to 'drivers/net/gianfar.c')
| -rw-r--r-- | drivers/net/gianfar.c | 695 |
1 files changed, 468 insertions, 227 deletions
diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c index fa0188ea9233..aa258e899261 100644 --- a/drivers/net/gianfar.c +++ b/drivers/net/gianfar.c @@ -143,6 +143,7 @@ void gfar_start(struct net_device *dev); static void gfar_clear_exact_match(struct net_device *dev); static void gfar_set_mac_for_addr(struct net_device *dev, int num, u8 *addr); static int gfar_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); +u16 gfar_select_queue(struct net_device *dev, struct sk_buff *skb); MODULE_AUTHOR("Freescale Semiconductor, Inc"); MODULE_DESCRIPTION("Gianfar Ethernet Driver"); @@ -171,71 +172,89 @@ static int gfar_init_bds(struct net_device *ndev) struct gfar_priv_rx_q *rx_queue = NULL; struct txbd8 *txbdp; struct rxbd8 *rxbdp; - int i; - - tx_queue = priv->tx_queue; - rx_queue = priv->rx_queue; + int i, j; - /* Initialize some variables in our dev structure */ - tx_queue->num_txbdfree = tx_queue->tx_ring_size; - tx_queue->dirty_tx = tx_queue->cur_tx = tx_queue->tx_bd_base; - rx_queue->cur_rx = rx_queue->rx_bd_base; - tx_queue->skb_curtx = tx_queue->skb_dirtytx = 0; - rx_queue->skb_currx = 0; + for (i = 0; i < priv->num_tx_queues; i++) { + tx_queue = priv->tx_queue[i]; + /* Initialize some variables in our dev structure */ + tx_queue->num_txbdfree = tx_queue->tx_ring_size; + tx_queue->dirty_tx = tx_queue->tx_bd_base; + tx_queue->cur_tx = tx_queue->tx_bd_base; + tx_queue->skb_curtx = 0; + tx_queue->skb_dirtytx = 0; + + /* Initialize Transmit Descriptor Ring */ + txbdp = tx_queue->tx_bd_base; + for (j = 0; j < tx_queue->tx_ring_size; j++) { + txbdp->lstatus = 0; + txbdp->bufPtr = 0; + txbdp++; + } - /* Initialize Transmit Descriptor Ring */ - txbdp = tx_queue->tx_bd_base; - for (i = 0; i < tx_queue->tx_ring_size; i++) { - txbdp->lstatus = 0; - txbdp->bufPtr = 0; - txbdp++; + /* Set the last descriptor in the ring to indicate wrap */ + txbdp--; + txbdp->status |= TXBD_WRAP; } - /* Set the last descriptor in the ring to indicate wrap */ - txbdp--; - txbdp->status |= TXBD_WRAP; + for (i = 0; i < priv->num_rx_queues; i++) { + rx_queue = priv->rx_queue[i]; + rx_queue->cur_rx = rx_queue->rx_bd_base; + rx_queue->skb_currx = 0; + rxbdp = rx_queue->rx_bd_base; - rxbdp = rx_queue->rx_bd_base; - for (i = 0; i < rx_queue->rx_ring_size; i++) { - struct sk_buff *skb = rx_queue->rx_skbuff[i]; + for (j = 0; j < rx_queue->rx_ring_size; j++) { + struct sk_buff *skb = rx_queue->rx_skbuff[j]; - if (skb) { - gfar_init_rxbdp(rx_queue, rxbdp, rxbdp->bufPtr); - } else { - skb = gfar_new_skb(ndev); - if (!skb) { - pr_err("%s: Can't allocate RX buffers\n", - ndev->name); - return -ENOMEM; + if (skb) { + gfar_init_rxbdp(rx_queue, rxbdp, + rxbdp->bufPtr); + } else { + skb = gfar_new_skb(ndev); + if (!skb) { + pr_err("%s: Can't allocate RX buffers\n", + ndev->name); + goto err_rxalloc_fail; + } + rx_queue->rx_skbuff[j] = skb; + + gfar_new_rxbdp(rx_queue, rxbdp, skb); } - rx_queue->rx_skbuff[i] = skb; - gfar_new_rxbdp(rx_queue, rxbdp, skb); + rxbdp++; } - rxbdp++; } return 0; + +err_rxalloc_fail: + free_skb_resources(priv); + return -ENOMEM; } static int gfar_alloc_skb_resources(struct net_device *ndev) { void *vaddr; - int i; + dma_addr_t addr; + int i, j, k; struct gfar_private *priv = netdev_priv(ndev); struct device *dev = &priv->ofdev->dev; struct gfar_priv_tx_q *tx_queue = NULL; struct gfar_priv_rx_q *rx_queue = NULL; - tx_queue = priv->tx_queue; - rx_queue = priv->rx_queue; + priv->total_tx_ring_size = 0; + for (i = 0; i < priv->num_tx_queues; i++) + priv->total_tx_ring_size += priv->tx_queue[i]->tx_ring_size; + + priv->total_rx_ring_size = 0; + for (i = 0; i < priv->num_rx_queues; i++) + priv->total_rx_ring_size += priv->rx_queue[i]->rx_ring_size; /* Allocate memory for the buffer descriptors */ vaddr = dma_alloc_coherent(dev, - sizeof(*tx_queue->tx_bd_base) * tx_queue->tx_ring_size + - sizeof(*rx_queue->rx_bd_base) * rx_queue->rx_ring_size, - &tx_queue->tx_bd_dma_base, GFP_KERNEL); + sizeof(struct txbd8) * priv->total_tx_ring_size + + sizeof(struct rxbd8) * priv->total_rx_ring_size, + &addr, GFP_KERNEL); if (!vaddr) { if (netif_msg_ifup(priv)) pr_err("%s: Could not allocate buffer descriptors!\n", @@ -243,38 +262,57 @@ static int gfar_alloc_skb_resources(struct net_device *ndev) return -ENOMEM; } - tx_queue->tx_bd_base = vaddr; - tx_queue->dev = ndev; + for (i = 0; i < priv->num_tx_queues; i++) { + tx_queue = priv->tx_queue[i]; + tx_queue->tx_bd_base = (struct txbd8 *) vaddr; + tx_queue->tx_bd_dma_base = addr; + tx_queue->dev = ndev; + /* enet DMA only understands physical addresses */ + addr += sizeof(struct txbd8) *tx_queue->tx_ring_size; + vaddr += sizeof(struct txbd8) *tx_queue->tx_ring_size; + } /* Start the rx descriptor ring where the tx ring leaves off */ - vaddr = vaddr + sizeof(*tx_queue->tx_bd_base) * tx_queue->tx_ring_size; - rx_queue->rx_bd_base = vaddr; - rx_queue->dev = ndev; + for (i = 0; i < priv->num_rx_queues; i++) { + rx_queue = priv->rx_queue[i]; + rx_queue->rx_bd_base = (struct rxbd8 *) vaddr; + rx_queue->rx_bd_dma_base = addr; + rx_queue->dev = ndev; + addr += sizeof (struct rxbd8) * rx_queue->rx_ring_size; + vaddr += sizeof (struct rxbd8) * rx_queue->rx_ring_size; + } /* Setup the skbuff rings */ - tx_queue->tx_skbuff = kmalloc(sizeof(*tx_queue->tx_skbuff) * + for (i = 0; i < priv->num_tx_queues; i++) { + tx_queue = priv->tx_queue[i]; + tx_queue->tx_skbuff = kmalloc(sizeof(*tx_queue->tx_skbuff) * tx_queue->tx_ring_size, GFP_KERNEL); - if (!tx_queue->tx_skbuff) { - if (netif_msg_ifup(priv)) - pr_err("%s: Could not allocate tx_skbuff\n", - ndev->name); - goto cleanup; - } + if (!tx_queue->tx_skbuff) { + if (netif_msg_ifup(priv)) + pr_err("%s: Could not allocate tx_skbuff\n", + ndev->name); + goto cleanup; + } - for (i = 0; i < tx_queue->tx_ring_size; i++) - tx_queue->tx_skbuff[i] = NULL; + for (k = 0; k < tx_queue->tx_ring_size; k++) + tx_queue->tx_skbuff[k] = NULL; + } - rx_queue->rx_skbuff = kmalloc(sizeof(*rx_queue->rx_skbuff) * + for (i = 0; i < priv->num_rx_queues; i++) { + rx_queue = priv->rx_queue[i]; + rx_queue->rx_skbuff = kmalloc(sizeof(*rx_queue->rx_skbuff) * rx_queue->rx_ring_size, GFP_KERNEL); - if (!rx_queue->rx_skbuff) { - if (netif_msg_ifup(priv)) - pr_err("%s: Could not allocate rx_skbuff\n", - ndev->name); - goto cleanup; - } - for (i = 0; i < rx_queue->rx_ring_size; i++) - rx_queue->rx_skbuff[i] = NULL; + if (!rx_queue->rx_skbuff) { + if (netif_msg_ifup(priv)) + pr_err("%s: Could not allocate rx_skbuff\n", + ndev->name); + goto cleanup; + } + + for (j = 0; j < rx_queue->rx_ring_size; j++) + rx_queue->rx_skbuff[j] = NULL; + } if (gfar_init_bds(ndev)) goto cleanup; @@ -286,33 +324,47 @@ cleanup: return -ENOMEM; } +static void gfar_init_tx_rx_base(struct gfar_private *priv) +{ + struct gfar __iomem *regs = priv->gfargrp.regs; + u32 *baddr; + int i; + + baddr = ®s->tbase0; + for(i = 0; i < priv->num_tx_queues; i++) { + gfar_write(baddr, priv->tx_queue[i]->tx_bd_dma_base); + baddr += 2; + } + + baddr = ®s->rbase0; + for(i = 0; i < priv->num_rx_queues; i++) { + gfar_write(baddr, priv->rx_queue[i]->rx_bd_dma_base); + baddr += 2; + } +} + static void gfar_init_mac(struct net_device *ndev) { struct gfar_private *priv = netdev_priv(ndev); - struct gfar_priv_tx_q *tx_queue = NULL; - struct gfar_priv_rx_q *rx_queue = NULL; struct gfar __iomem *regs = priv->gfargrp.regs; u32 rctrl = 0; u32 tctrl = 0; u32 attrs = 0; - tx_queue = priv->tx_queue; - rx_queue = priv->rx_queue; - - /* enet DMA only understands physical addresses */ - gfar_write(®s->tbase0, tx_queue->tx_bd_dma_base); - gfar_write(®s->rbase0, tx_queue->tx_bd_dma_base + - sizeof(*tx_queue->tx_bd_base) * - tx_queue->tx_ring_size); + /* write the tx/rx base registers */ + gfar_init_tx_rx_base(priv); /* Configure the coalescing support */ gfar_write(®s->txic, 0); - if (tx_queue->txcoalescing) - gfar_write(®s->txic, tx_queue->txic); + if (priv->tx_queue[0]->txcoalescing) + gfar_write(®s->txic, priv->tx_queue[0]->txic); gfar_write(®s->rxic, 0); - if (rx_queue->rxcoalescing) - gfar_write(®s->rxic, rx_queue->rxic); + if (priv->rx_queue[0]->rxcoalescing) + gfar_write(®s->rxic, priv->rx_queue[0]->rxic); + + if (priv->rx_filer_enable) + rctrl |= RCTRL_FILREN; if (priv->rx_csum_enable) rctrl |= RCTRL_CHECKSUMMING; @@ -341,6 +393,8 @@ static void gfar_init_mac(struct net_device *ndev) if (ndev->features & NETIF_F_IP_CSUM) tctrl |= TCTRL_INIT_CSUM; + tctrl |= TCTRL_TXSCHED_PRIO; + gfar_write(®s->tctrl, tctrl); /* Set the extraction length and index */ @@ -374,6 +428,7 @@ static const struct net_device_ops gfar_netdev_ops = { .ndo_set_multicast_list = gfar_set_multi, .ndo_tx_timeout = gfar_timeout, .ndo_do_ioctl = gfar_ioctl, + .ndo_select_queue = gfar_select_queue, .ndo_vlan_rx_register = gfar_vlan_rx_register, .ndo_set_mac_address = eth_mac_addr, .ndo_validate_addr = eth_validate_addr, @@ -382,36 +437,131 @@ static const struct net_device_ops gfar_netdev_ops = { #endif }; +void lock_rx_qs(struct gfar_private *priv) +{ + int i = 0x0; + + for (i = 0; i < priv->num_rx_queues; i++) + spin_lock(&priv->rx_queue[i]->rxlock); +} + +void lock_tx_qs(struct gfar_private *priv) +{ + int i = 0x0; + + for (i = 0; i < priv->num_tx_queues; i++) + spin_lock(&priv->tx_queue[i]->txlock); +} + +void unlock_rx_qs(struct gfar_private *priv) +{ + int i = 0x0; + + for (i = 0; i < priv->num_rx_queues; i++) + spin_unlock(&priv->rx_queue[i]->rxlock); +} + +void unlock_tx_qs(struct gfar_private *priv) +{ + int i = 0x0; + + for (i = 0; i < priv->num_tx_queues; i++) + spin_unlock(&priv->tx_queue[i]->txlock); +} + /* Returns 1 if incoming frames use an FCB */ static inline int gfar_uses_fcb(struct gfar_private *priv) { return priv->vlgrp || priv->rx_csum_enable; } -static int gfar_of_init(struct net_device *dev) +u16 gfar_select_queue(struct net_device *dev, struct sk_buff *skb) +{ + return skb_get_queue_mapping(skb); +} +static void free_tx_pointers(struct gfar_private *priv) +{ + int i = 0; + + for (i = 0; i < priv->num_tx_queues; i++) + kfree(priv->tx_queue[i]); +} + +static void free_rx_pointers(struct gfar_private *priv) +{ + int i = 0; + + for (i = 0; i < priv->num_rx_queues; i++) + kfree(priv->rx_queue[i]); +} + +static int gfar_of_init(struct of_device *ofdev, struct net_device **pdev) { const char *model; const char *ctype; const void *mac_addr; u64 addr, size; - int err = 0; - struct gfar_private *priv = netdev_priv(dev); - struct device_node *np = priv->node; + int err = 0, i; + struct net_device *dev = NULL; + struct gfar_private *priv = NULL; + struct device_node *np = ofdev->node; const u32 *stash; const u32 *stash_len; const u32 *stash_idx; + unsigned int num_tx_qs, num_rx_qs; + u32 *tx_queues, *rx_queues; if (!np || !of_device_is_available(np)) return -ENODEV; + /* parse the num of tx and rx queues */ + tx_queues = (u32 *)of_get_property(np, "fsl,num_tx_queues", NULL); + num_tx_qs = tx_queues ? *tx_queues : 1; + + if (num_tx_qs > MAX_TX_QS) { + printk(KERN_ERR "num_tx_qs(=%d) greater than MAX_TX_QS(=%d)\n", + num_tx_qs, MAX_TX_QS); + printk(KERN_ERR "Cannot do alloc_etherdev, aborting\n"); + return -EINVAL; + } + + rx_queues = (u32 *)of_get_property(np, "fsl,num_rx_queues", NULL); + num_rx_qs = rx_queues ? *rx_queues : 1; + + if (num_rx_qs > MAX_RX_QS) { + printk(KERN_ERR "num_rx_qs(=%d) greater than MAX_RX_QS(=%d)\n", + num_tx_qs, MAX_TX_QS); + printk(KERN_ERR "Cannot do alloc_etherdev, aborting\n"); + return -EINVAL; + } + + *pdev = alloc_etherdev_mq(sizeof(*priv), num_tx_qs); + dev = *pdev; + if (NULL == dev) + return -ENOMEM; + + priv = netdev_priv(dev); + priv->node = ofdev->node; + priv->ndev = dev; + + dev->num_tx_queues = num_tx_qs; + dev->real_num_tx_queues = num_tx_qs; + priv->num_tx_queues = num_tx_qs; + priv->num_rx_queues = num_rx_qs; + /* get a pointer to the register memory */ addr = of_translate_address(np, of_get_address(np, 0, &size, NULL)); priv->gfargrp.regs = ioremap(addr, size); - if (priv->gfargrp.regs == NULL) - return -ENOMEM; + if (priv->gfargrp.regs == NULL) { + err = -ENOMEM; + goto err_out; + } priv->gfargrp.priv = priv; /* back pointer from group to priv */ + priv->gfargrp.rx_bit_map = DEFAULT_MAPPING; + priv->gfargrp.tx_bit_map = DEFAULT_MAPPING; + priv->gfargrp.interruptTransmit = irq_of_parse_and_map(np, 0); model = of_get_property(np, "model", NULL); @@ -430,6 +580,38 @@ static int gfar_of_init(struct net_device *dev) } } + for (i = 0; i < priv->num_tx_queues; i++) + priv->tx_queue[i] = NULL; + for (i = 0; i < priv->num_rx_queues; i++) + priv->rx_queue[i] = NULL; + + for (i = 0; i < priv->num_tx_queues; i++) { + priv->tx_queue[i] = (struct gfar_priv_tx_q *)kmalloc( + sizeof (struct gfar_priv_tx_q), GFP_KERNEL); + if (!priv->tx_queue[i]) { + err = -ENOMEM; + goto tx_alloc_failed; + } + priv->tx_queue[i]->tx_skbuff = NULL; + priv->tx_queue[i]->qindex = i; + priv->tx_queue[i]->dev = dev; + spin_lock_init(&(priv->tx_queue[i]->txlock)); + } + + for (i = 0; i < priv->num_rx_queues; i++) { + priv->rx_queue[i] = (struct gfar_priv_rx_q *)kmalloc( + sizeof (struct gfar_priv_rx_q), GFP_KERNEL); + if (!priv->rx_queue[i]) { + err = -ENOMEM; + goto rx_alloc_failed; + } + priv->rx_queue[i]->rx_skbuff = NULL; + priv->rx_queue[i]->qindex = i; + priv->rx_queue[i]->dev = dev; + spin_lock_init(&(priv->rx_queue[i]->rxlock)); + } + + stash = of_get_property(np, "bd-stash", NULL); if (stash) { @@ -490,8 +672,13 @@ static int gfar_of_init(struct net_device *dev) return 0; +rx_alloc_failed: + free_rx_pointers(priv); +tx_alloc_failed: + free_tx_pointers(priv); err_out: iounmap(priv->gfargrp.regs); + free_netdev(dev); return err; } @@ -509,6 +696,17 @@ static int gfar_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) return phy_mii_ioctl(priv->phydev, if_mii(rq), cmd); } +static unsigned int reverse_bitmap(unsigned int bit_map, unsigned int max_qs) +{ + unsigned int new_bit_map = 0x0; + int mask = 0x1 << (max_qs - 1), i; + for (i = 0; i < max_qs; i++) { + if (bit_map & mask) + new_bit_map = new_bit_map + (1 << i); + mask = mask >> 0x1; + } + return new_bit_map; +} /* Set up the ethernet device structure, private data, * and anything else we need before we start */ static int gfar_probe(struct of_device *ofdev, @@ -518,14 +716,14 @@ static int gfar_probe(struct of_device *ofdev, struct net_device *dev = NULL; struct gfar_private *priv = NULL; struct gfar __iomem *regs = NULL; - int err = 0; + int err = 0, i; int len_devname; + u32 rstat = 0, tstat = 0, rqueue = 0, tqueue = 0; - /* Create an ethernet device instance */ - dev = alloc_etherdev(sizeof (*priv)); + err = gfar_of_init(ofdev, &dev); - if (NULL == dev) - return -ENOMEM; + if (err) + return err; priv = netdev_priv(dev); priv->ndev = dev; @@ -533,23 +731,6 @@ static int gfar_probe(struct of_device *ofdev, priv->node = ofdev->node; SET_NETDEV_DEV(dev, &ofdev->dev); - err = gfar_of_init(dev); - - if (err) - goto regs_fail; - - priv->tx_queue = (struct gfar_priv_tx_q *)kmalloc( - sizeof (struct gfar_priv_tx_q), GFP_KERNEL); - if (!priv->tx_queue) - goto regs_fail; - - priv->rx_queue = (struct gfar_priv_rx_q *)kmalloc( - sizeof (struct gfar_priv_rx_q), GFP_KERNEL); - if (!priv->rx_queue) - goto rx_queue_fail; - - spin_lock_init(&priv->tx_queue->txlock); - spin_lock_init(&priv->rx_queue->rxlock); spin_lock_init(&priv->gfargrp.grplock); spin_lock_init(&priv->bflock); INIT_WORK(&priv->reset_task, gfar_reset_task); @@ -587,8 +768,8 @@ static int gfar_probe(struct of_device *ofdev, dev->netdev_ops = &gfar_netdev_ops; dev->ethtool_ops = &gfar_ethtool_ops; - /* Register for napi ...NAPI is for each rx_queue */ - netif_napi_add(dev, &priv->rx_queue->napi, gfar_poll, GFAR_DEV_WEIGHT); + /* Register for napi ...We are registering NAPI for each grp */ + netif_napi_add(dev, &priv->gfargrp.napi, gfar_poll, GFAR_DEV_WEIGHT); if (priv->device_flags & FSL_GIANFAR_DEV_HAS_CSUM) { priv->rx_csum_enable = 1; @@ -644,17 +825,44 @@ static int gfar_probe(struct of_device *ofdev, if (dev->features & NETIF_F_IP_CSUM) dev->hard_header_len += GMAC_FCB_LEN; + /* Need to reverse the bit maps as bit_map's MSB is q0 + * but, for_each_bit parses from right to left, which + * basically reverses the queue numbers */ + priv->gfargrp.tx_bit_map = reverse_bitmap(priv->gfargrp.tx_bit_map, MAX_TX_QS); + priv->gfargrp.rx_bit_map = reverse_bitmap(priv->gfargrp.rx_bit_map, MAX_RX_QS); + + /* Calculate RSTAT, TSTAT, RQUEUE and TQUEUE values */ + for_each_bit(i, &priv->gfargrp.rx_bit_map, priv->num_rx_queues) { + priv->gfargrp.num_rx_queues++; + rstat = rstat | (RSTAT_CLEAR_RHALT >> i); + rqueue = rqueue | ((RQUEUE_EN0 | RQUEUE_EX0) >> i); + } + for_each_bit (i, &priv->gfargrp.tx_bit_map, priv->num_tx_queues) { + priv->gfargrp.num_tx_queues++; + tstat = tstat | (TSTAT_CLEAR_THALT >> i); + tqueue = tqueue | (TQUEUE_EN0 >> i); + } + priv->gfargrp.rstat = rstat; + priv->gfargrp.tstat = tstat; + + gfar_write(®s->rqueue, rqueue); + gfar_write(®s->tqueue, tqueue); + priv->rx_buffer_size = DEFAULT_RX_BUFFER_SIZE; /* Initializing some of the rx/tx queue level parameters */ - priv->tx_queue->tx_ring_size = DEFAULT_TX_RING_SIZE; - priv->tx_queue->num_txbdfree = DEFAULT_TX_RING_SIZE; - priv->tx_queue->txcoalescing = DEFAULT_TX_COALESCE; - priv->tx_queue->txic = DEFAULT_TXIC; + for (i = 0; i < priv->num_tx_queues; i++) { + priv->tx_queue[i]->tx_ring_size = DEFAULT_TX_RING_SIZE; + priv->tx_queue[i]->num_txbdfree = DEFAULT_TX_RING_SIZE; + priv->tx_queue[i]->txcoalescing = DEFAULT_TX_COALESCE; + priv->tx_queue[i]->txic = DEFAULT_TXIC; + } - priv->rx_queue->rx_ring_size = DEFAULT_RX_RING_SIZE; - priv->rx_queue->rxcoalescing = DEFAULT_RX_COALESCE; - priv->rx_queue->rxic = DEFAULT_RXIC; + for (i = 0; i < priv->num_rx_queues; i++) { + priv->rx_queue[i]->rx_ring_size = DEFAULT_RX_RING_SIZE; + priv->rx_queue[i]->rxcoalescing = DEFAULT_RX_COALESCE; + priv->rx_queue[i]->rxic = DEFAULT_RXIC; + } /* Enable most messages by default */ priv->msg_enable = (NETIF_MSG_IFUP << 1 ) - 1; @@ -699,17 +907,19 @@ static int gfar_probe(struct of_device *ofdev, /* Even more device info helps when determining which kernel */ /* provided which set of benchmarks. */ printk(KERN_INFO "%s: Running with NAPI enabled\n", dev->name); - printk(KERN_INFO "%s: %d/%d RX/TX BD ring size\n", - dev->name, priv->rx_queue->rx_ring_size, priv->tx_queue->tx_ring_size); + for (i = 0; i < priv->num_rx_queues; i++) + printk(KERN_INFO "%s: :RX BD ring size for Q[%d]: %d\n", + dev->name, i, priv->rx_queue[i]->rx_ring_size); + for(i = 0; i < priv->num_tx_queues; i++) + printk(KERN_INFO "%s:TX BD ring size for Q[%d]: %d\n", + dev->name, i, priv->tx_queue[i]->tx_ring_size); return 0; register_fail: iounmap(priv->gfargrp.regs); - kfree(priv->rx_queue); -rx_queue_fail: - kfree(priv->tx_queue); -regs_fail: + free_tx_pointers(priv); + free_rx_pointers(priv); if (priv->phy_node) of_node_put(priv->phy_node); if (priv->tbi_node) @@ -742,8 +952,6 @@ static int gfar_suspend(struct device *dev) { struct gfar_private *priv = dev_get_drvdata(dev); struct net_device *ndev = priv->ndev; - struct gfar_priv_tx_q *tx_queue = NULL; - struct gfar_priv_rx_q *rx_queue = NULL; struct gfar __iomem *regs = NULL; unsigned long flags; u32 tempval; @@ -752,13 +960,13 @@ static int gfar_suspend(struct device *dev) (priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET); netif_device_detach(ndev); - tx_queue = priv->tx_queue; - rx_queue = priv->rx_queue; regs = priv->gfargrp.regs; if (netif_running(ndev)) { - spin_lock_irqsave(&tx_queue->txlock, flags); - spin_lock(&rx_queue->rxlock); + + local_irq_save(flags); + lock_tx_qs(priv); + lock_rx_qs(priv); gfar_halt_nodisable(ndev); @@ -772,10 +980,11 @@ static int gfar_suspend(struct device *dev) gfar_write(®s->maccfg1, tempval); - spin_unlock(&rx_queue->rxlock); - spin_unlock_irqrestore(&tx_queue->txlock, flags); + unlock_rx_qs(priv); + unlock_tx_qs(priv); + local_irq_restore(flags); - napi_disable(&rx_queue->napi); + napi_disable(&priv->gfargrp.napi); if (magic_packet) { /* Enable interrupt on Magic Packet */ @@ -797,8 +1006,6 @@ static int gfar_resume(struct device *dev) { struct gfar_private *priv = dev_get_drvdata(dev); struct net_device *ndev = priv->ndev; - struct gfar_priv_tx_q *tx_queue = NULL; - struct gfar_priv_rx_q *rx_queue = NULL; struct gfar __iomem *regs = NULL; unsigned long flags; u32 tempval; @@ -816,12 +1023,11 @@ static int gfar_resume(struct device *dev) /* Disable Magic Packet mode, in case something * else woke us up. */ - rx_queue = priv->rx_queue; - tx_queue = priv->tx_queue; regs = priv->gfargrp.regs; - spin_lock_irqsave(&tx_queue->txlock, flags); - spin_lock(&rx_queue->rxlock); + local_irq_save(flags); + lock_tx_qs(priv); + lock_rx_qs(priv); tempval = gfar_read(®s->maccfg2); tempval &= ~MACCFG2_MPEN; @@ -829,12 +1035,13 @@ static int gfar_resume(struct device *dev) gfar_start(ndev); - spin_unlock(&rx_queue->rxlock); - spin_unlock_irqrestore(&tx_queue->txlock, flags); + unlock_rx_qs(priv); + unlock_tx_qs(priv); + local_irq_restore(flags); netif_device_attach(ndev); - napi_enable(&rx_queue->napi); + napi_enable(&priv->gfargrp.napi); return 0; } @@ -861,7 +1068,7 @@ static int gfar_restore(struct device *dev) phy_start(priv->phydev); netif_device_attach(ndev); - napi_enable(&priv->napi); + napi_enable(&priv->gfargrp.napi); return 0; } @@ -1115,23 +1322,21 @@ void gfar_halt(struct net_device *dev) void stop_gfar(struct net_device *dev) { struct gfar_private *priv = netdev_priv(dev); - struct gfar_priv_tx_q *tx_queue = NULL; - struct gfar_priv_rx_q *rx_queue = NULL; unsigned long flags; phy_stop(priv->phydev); - tx_queue = priv->tx_queue; - rx_queue = priv->rx_queue; /* Lock it down */ - spin_lock_irqsave(&tx_queue->txlock, flags); - spin_lock(&rx_queue->rxlock); + local_irq_save(flags); + lock_tx_qs(priv); + lock_rx_qs(priv); gfar_halt(dev); - spin_unlock(&rx_queue->rxlock); - spin_unlock_irqrestore(&tx_queue->txlock, flags); + unlock_rx_qs(priv); + unlock_tx_qs(priv); + local_irq_restore(flags); /* Free the IRQs */ if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MULTI_INTR) { @@ -1145,24 +1350,14 @@ void stop_gfar(struct net_device *dev) free_skb_resources(priv); } -/* If there are any tx skbs or rx skbs still around, free them. - * Then free tx_skbuff and rx_skbuff */ -static void free_skb_resources(struct gfar_private *priv) +static void free_skb_tx_queue(struct gfar_priv_tx_q *tx_queue) { - struct device *dev = &priv->ofdev->dev; - struct rxbd8 *rxbdp; struct txbd8 *txbdp; - struct gfar_priv_tx_q *tx_queue = NULL; - struct gfar_priv_rx_q *rx_queue = NULL; + struct gfar_private *priv = netdev_priv(tx_queue->dev); int i, j; - /* Go through all the buffer descriptors and free their data buffers */ - tx_queue = priv->tx_queue; txbdp = tx_queue->tx_bd_base; - if (!tx_queue->tx_skbuff) - goto skip_tx_skbuff; - for (i = 0; i < tx_queue->tx_ring_size; i++) { if (!tx_queue->tx_skbuff[i]) continue; @@ -1170,7 +1365,8 @@ static void free_skb_resources(struct gfar_private *priv) dma_unmap_single(&priv->ofdev->dev, txbdp->bufPtr, txbdp->length, DMA_TO_DEVICE); txbdp->lstatus = 0; - for (j = 0; j < skb_shinfo(tx_queue->tx_skbuff[i])->nr_frags; j++) { + for (j = 0; j < skb_shinfo(tx_queue->tx_skbuff[i])->nr_frags; + j++) { txbdp++; dma_unmap_page(&priv->ofdev->dev, txbdp->bufPtr, txbdp->length, DMA_TO_DEVICE); @@ -1179,36 +1375,58 @@ static void free_skb_resources(struct gfar_private *priv) dev_kfree_skb_any(tx_queue->tx_skbuff[i]); tx_queue->tx_skbuff[i] = NULL; } - kfree(tx_queue->tx_skbuff); -skip_tx_skbuff: +} - rx_queue = priv->rx_queue; - rxbdp = rx_queue->rx_bd_base; +static void free_skb_rx_queue(struct gfar_priv_rx_q *rx_queue) +{ + struct rxbd8 *rxbdp; + struct gfar_private *priv = netdev_priv(rx_queue->dev); + int i; - if (!rx_queue->rx_skbuff) - goto skip_rx_skbuff; + rxbdp = rx_queue->rx_bd_base; for (i = 0; i < rx_queue->rx_ring_size; i++) { if (rx_queue->rx_skbuff[i]) { - dma_unmap_single(&priv->ofdev->dev, rxbdp->bufPtr, - priv->rx_buffer_size, + dma_unmap_single(&priv->ofdev->dev, + rxbdp->bufPtr, priv->rx_buffer_size, DMA_FROM_DEVICE); dev_kfree_skb_any(rx_queue->rx_skbuff[i]); rx_queue->rx_skbuff[i] = NULL; } - rxbdp->lstatus = 0; rxbdp->bufPtr = 0; rxbdp++; } - kfree(rx_queue->rx_skbuff); -skip_rx_skbuff: +} - dma_free_coherent(dev, sizeof(*txbdp) * tx_queue->tx_ring_size + - sizeof(*rxbdp) * rx_queue->rx_ring_size, - tx_queue->tx_bd_base, tx_queue->tx_bd_dma_base); +/* If there are any tx skbs or rx skbs still around, free them. + * Then free tx_skbuff and rx_skbuff */ +static void free_skb_resources(struct gfar_private *priv) +{ + struct gfar_priv_tx_q *tx_queue = NULL; + struct gfar_priv_rx_q *rx_queue = NULL; + int i; + + /* Go through all the buffer descriptors and free their data buffers */ + for (i = 0; i < priv->num_tx_queues; i++) { + tx_queue = priv->tx_queue[i]; + if(!tx_queue->tx_skbuff) + free_skb_tx_queue(tx_queue); + } + + for (i = 0; i < priv->num_rx_queues; i++) { + rx_queue = priv->rx_queue[i]; + if(!rx_queue->rx_skbuff) + free_skb_rx_queue(rx_queue); + } + + dma_free_coherent(&priv->ofdev->dev, + sizeof(struct txbd8) * priv->total_tx_ring_size + + sizeof(struct rxbd8) * priv->total_rx_ring_size, + priv->tx_queue[0]->tx_bd_base, + priv->tx_queue[0]->tx_bd_dma_base); } void gfar_start(struct net_device *dev) @@ -1233,8 +1451,8 @@ void gfar_start(struct net_device *dev) gfar_write(®s->dmactrl, tempval); /* Clear THLT/RHLT, so that the DMA starts polling now */ - gfar_write(®s->tstat, TSTAT_CLEAR_THALT); - gfar_write(®s->rstat, RSTAT_CLEAR_RHALT); + gfar_write(®s->tstat, priv->gfargrp.tstat); + gfar_write(®s->rstat, priv->gfargrp.rstat); /* Unmask the interrupts we look for */ gfar_write(®s->imask, IMASK_DEFAULT); @@ -1329,7 +1547,7 @@ static int gfar_enet_open(struct net_device *dev) struct gfar_private *priv = netdev_priv(dev); int err; - napi_enable(&priv->rx_queue->napi); + napi_enable(&priv->gfargrp.napi); skb_queue_head_init(&priv->rx_recycle); @@ -1341,17 +1559,17 @@ static int gfar_enet_open(struct net_device *dev) err = init_phy(dev); if (err) { - napi_disable(&priv->rx_queue->napi); + napi_disable(&priv->gfargrp.napi); return err; } err = startup_gfar(dev); if (err) { - napi_disable(&priv->rx_queue->napi); + napi_disable(&priv->gfargrp.napi); return err; } - netif_start_queue(dev); + netif_tx_start_all_queues(dev); device_set_wakeup_enable(&dev->dev, priv->wol_en); @@ -1421,16 +1639,20 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev) { struct gfar_private *priv = netdev_priv(dev); struct gfar_priv_tx_q *tx_queue = NULL; + struct netdev_queue *txq; struct gfar __iomem *regs = NULL; struct txfcb *fcb = NULL; struct txbd8 *txbdp, *txbdp_start, *base; u32 lstatus; - int i; + int i, rq = 0; u32 bufaddr; unsigned long flags; unsigned int nr_frags, length; - tx_queue = priv->tx_queue; + + rq = skb->queue_mapping; + tx_queue = priv->tx_queue[rq]; + txq = netdev_get_tx_queue(dev, rq); base = tx_queue->tx_bd_base; regs = priv->gfargrp.regs; @@ -1458,7 +1680,7 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev) /* check if there is space to queue this packet */ if ((nr_frags+1) > tx_queue->num_txbdfree) { /* no space, stop the queue */ - netif_stop_queue(dev); + netif_tx_stop_queue(txq); dev->stats.tx_fifo_errors++; spin_unlock_irqrestore(&tx_queue->txlock, flags); return NETDEV_TX_BUSY; @@ -1550,13 +1772,13 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev) /* If the next BD still needs to be cleaned up, then the bds are full. We need to tell the kernel to stop sending us stuff. */ if (!tx_queue->num_txbdfree) { - netif_stop_queue(dev); + netif_tx_stop_queue(txq); dev->stats.tx_fifo_errors++; } /* Tell the DMA to go go go */ - gfar_write(®s->tstat, TSTAT_CLEAR_THALT); + gfar_write(®s->tstat, TSTAT_CLEAR_THALT >> tx_queue->qindex); /* Unlock priv */ spin_unlock_irqrestore(&tx_queue->txlock, flags); @@ -1569,7 +1791,7 @@ static int gfar_close(struct net_device *dev) { struct gfar_private *priv = netdev_priv(dev); - napi_disable(&priv->rx_queue->napi); + napi_disable(&priv->gfargrp.napi); skb_queue_purge(&priv->rx_recycle); cancel_work_sync(&priv->reset_task); @@ -1579,7 +1801,7 @@ static int gfar_close(struct net_device *dev) phy_disconnect(priv->phydev); priv->phydev = NULL; - netif_stop_queue(dev); + netif_tx_stop_all_queues(dev); return 0; } @@ -1598,14 +1820,13 @@ static void gfar_vlan_rx_register(struct net_device *dev, struct vlan_group *grp) { struct gfar_private *priv = netdev_priv(dev); - struct gfar_priv_rx_q *rx_queue = NULL; struct gfar __iomem *regs = NULL; unsigned long flags; u32 tempval; - rx_queue = priv->rx_queue; regs = priv->gfargrp.regs; - spin_lock_irqsave(&rx_queue->rxlock, flags); + local_irq_save(flags); + lock_rx_qs(priv); priv->vlgrp = grp; @@ -1639,7 +1860,8 @@ static void gfar_vlan_rx_register(struct net_device *dev, gfar_change_mtu(dev, dev->mtu); - spin_unlock_irqrestore(&rx_queue->rxlock, flags); + unlock_rx_qs(priv); + local_irq_restore(flags); } static int gfar_change_mtu(struct net_device *dev, int new_mtu) @@ -1711,10 +1933,10 @@ static void gfar_reset_task(struct work_struct *work) struct net_device *dev = priv->ndev; if (dev->flags & IFF_UP) { - netif_stop_queue(dev); + netif_tx_stop_all_queues(dev); stop_gfar(dev); startup_gfar(dev); - netif_start_queue(dev); + netif_tx_start_all_queues(dev); } netif_tx_schedule_all(dev); @@ -1745,7 +1967,7 @@ static int gfar_clean_tx_ring(struct gfar_priv_tx_q *tx_queue) int howmany = 0; u32 lstatus; - rx_queue = priv->rx_queue; + rx_queue = priv->rx_queue[tx_queue->qindex]; bdp = tx_queue->dirty_tx; skb_dirtytx = tx_queue->skb_dirtytx; @@ -1798,8 +2020,8 @@ static int gfar_clean_tx_ring(struct gfar_priv_tx_q *tx_queue) } /* If we freed a buffer, we can restart transmission, if necessary */ - if (netif_queue_stopped(dev) && tx_queue->num_txbdfree) - netif_wake_queue(dev); + if (__netif_subqueue_stopped(dev, tx_queue->qindex) && tx_queue->num_txbdfree) + netif_wake_subqueue(dev, tx_queue->qindex); /* Update dirty indicators */ tx_queue->skb_dirtytx = skb_dirtytx; @@ -1812,19 +2034,12 @@ static int gfar_clean_tx_ring(struct gfar_priv_tx_q *tx_queue) static void gfar_schedule_cleanup(struct gfar_priv_grp *gfargrp) { - struct gfar_private *priv = gfargrp->priv; - struct gfar_priv_tx_q *tx_queue = NULL; - struct gfar_priv_rx_q *rx_queue = NULL; unsigned long flags; - rx_queue = priv->rx_queue; - tx_queue = priv->tx_queue; - spin_lock_irqsave(&tx_queue->txlock, flags); - spin_lock(&rx_queue->rxlock); - - if (napi_schedule_prep(&rx_queue->napi)) { + spin_lock_irqsave(&gfargrp->grplock, flags); + if (napi_schedule_prep(&gfargrp->napi)) { gfar_write(&gfargrp->regs->imask, IMASK_RTX_DISABLED); - __napi_schedule(&rx_queue->napi); + __napi_schedule(&gfargrp->napi); } else { /* * Clear IEVENT, so interrupts aren't called again @@ -1832,9 +2047,8 @@ static void gfar_schedule_cleanup(struct gfar_priv_grp *gfargrp) */ gfar_write(&gfargrp->regs->ievent, IEVENT_RTX_MASK); } + spin_unlock_irqrestore(&gfargrp->grplock, flags); - spin_unlock(&rx_queue->rxlock); - spin_unlock_irqrestore(&tx_queue->txlock, flags); } /* Interrupt Handler for Transmit complete */ @@ -1952,6 +2166,7 @@ static int gfar_process_frame(struct net_device *dev, struct sk_buff *skb, fcb = (struct rxfcb *)skb->data; /* Remove the FCB from the skb */ + skb_set_queue_mapping(skb, fcb->rq); /* Remove the padded bytes, if there are any */ if (amount_pull) skb_pull(skb, amount_pull); @@ -2072,28 +2287,54 @@ int gfar_clean_rx_ring(struct gfar_priv_rx_q *rx_queue, int rx_work_limit) static int gfar_poll(struct napi_struct *napi, int budget) { - struct gfar_priv_rx_q *rx_queue = container_of(napi, - struct gfar_priv_rx_q, napi); - struct net_device *dev = rx_queue->dev; - struct gfar_private *priv = netdev_priv(dev); + struct gfar_priv_grp *gfargrp = container_of(napi, + struct gfar_priv_grp, napi); + struct gfar_private *priv = gfargrp->priv; struct gfar __iomem *regs = priv->gfargrp.regs; struct gfar_priv_tx_q *tx_queue = NULL; - int tx_cleaned = 0; - int rx_cleaned = 0; + struct gfar_priv_rx_q *rx_queue = NULL; + int rx_cleaned = 0, budget_per_queue = 0, rx_cleaned_per_queue = 0; + int tx_cleaned = 0, i, left_over_budget = budget, serviced_queues = 0; + int num_queues = 0; unsigned long flags; + num_queues = gfargrp->num_rx_queues; + budget_per_queue = budget/num_queues; + /* Clear IEVENT, so interrupts aren't called again * because of the packets that have already arrived */ gfar_write(®s->ievent, IEVENT_RTX_MASK); - tx_queue = priv->tx_queue; - /* If we fail to get the lock, don't bother with the TX BDs */ - if (spin_trylock_irqsave(&tx_queue->txlock, flags)) { - tx_cleaned = gfar_clean_tx_ring(tx_queue); - spin_unlock_irqrestore(&tx_queue->txlock, flags); - } + while (num_queues && left_over_budget) { - rx_cleaned = gfar_clean_rx_ring(rx_queue, budget); + budget_per_queue = left_over_budget/num_queues; + left_over_budget = 0; + + for_each_bit(i, &gfargrp->rx_bit_map, priv->num_rx_queues) { + if (test_bit(i, &serviced_queues)) + continue; + rx_queue = priv->rx_queue[i]; + tx_queue = priv->tx_queue[rx_queue->qindex]; + + /* If we fail to get the lock, + * don't bother with the TX BDs */ + if (spin_trylock_irqsave(&tx_queue->txlock, flags)) { + tx_cleaned += gfar_clean_tx_ring(tx_queue); + spin_unlock_irqrestore(&tx_queue->txlock, + flags); + } + + rx_cleaned_per_queue = gfar_clean_rx_ring(rx_queue, + budget_per_queue); + rx_cleaned += rx_cleaned_per_queue; + if(rx_cleaned_per_queue < budget_per_queue) { + left_over_budget = left_over_budget + + (budget_per_queue - rx_cleaned_per_queue); + set_bit(i, &serviced_queues); + num_queues--; + } + } + } if (tx_cleaned) return budget; @@ -2102,7 +2343,7 @@ static int gfar_poll(struct napi_struct *napi, int budget) napi_complete(napi); /* Clear the halt bit in RSTAT */ - gfar_write(®s->rstat, RSTAT_CLEAR_RHALT); + gfar_write(®s->rstat, gfargrp->rstat); gfar_write(®s->imask, IMASK_DEFAULT); @@ -2180,14 +2421,14 @@ static irqreturn_t gfar_interrupt(int irq, void *grp_id) static void adjust_link(struct net_device *dev) { struct gfar_private *priv = netdev_priv(dev); - struct gfar_priv_tx_q *tx_queue = NULL; struct gfar __iomem *regs = priv->gfargrp.regs; unsigned long flags; struct phy_device *phydev = priv->phydev; int new_state = 0; - tx_queue = priv->tx_queue; - spin_lock_irqsave(&tx_queue->txlock, flags); + local_irq_save(flags); + lock_tx_qs(priv); + if (phydev->link) { u32 tempval = gfar_read(®s->maccfg2); u32 ecntrl = gfar_read(®s->ecntrl); @@ -2252,8 +2493,8 @@ static void adjust_link(struct net_device *dev) if (new_state && netif_msg_link(priv)) phy_print_status(phydev); - - spin_unlock_irqrestore(&tx_queue->txlock, flags); + unlock_tx_qs(priv); + local_irq_restore(flags); } /* Update the hash table based on the current list of multicast @@ -2457,7 +2698,7 @@ static irqreturn_t gfar_error(int irq, void *grp_id) priv->extra_stats.tx_underrun++; /* Reactivate the Tx Queues */ - gfar_write(®s->tstat, TSTAT_CLEAR_THALT); + gfar_write(®s->tstat, gfargrp->tstat); } if (netif_msg_tx_err(priv)) printk(KERN_DEBUG "%s: Transmit Error\n", dev->name); |
