diff options
Diffstat (limited to 'drivers/net/ipg.c')
-rw-r--r-- | drivers/net/ipg.c | 125 |
1 files changed, 75 insertions, 50 deletions
diff --git a/drivers/net/ipg.c b/drivers/net/ipg.c index 9b358f6..7373daf 100644 --- a/drivers/net/ipg.c +++ b/drivers/net/ipg.c @@ -42,7 +42,6 @@ #define ipg_r16(reg) ioread16(ioaddr + (reg)) #define ipg_r8(reg) ioread8(ioaddr + (reg)) -#define JUMBO_FRAME_4k_ONLY enum { netdev_io_size = 128 }; @@ -55,6 +54,14 @@ MODULE_DESCRIPTION("IC Plus IP1000 Gigabit Ethernet Adapter Linux Driver"); MODULE_LICENSE("GPL"); /* + * Defaults + */ +#define IPG_MAX_RXFRAME_SIZE 0x0600 +#define IPG_RXFRAG_SIZE 0x0600 +#define IPG_RXSUPPORT_SIZE 0x0600 +#define IPG_IS_JUMBO false + +/* * Variable record -- index by leading revision/length * Revision/Length(=N*4), Address1, Data1, Address2, Data2,...,AddressN,DataN */ @@ -577,12 +584,12 @@ static void ipg_nic_set_multicast_list(struct net_device *dev) /* NIC to be configured in promiscuous mode. */ receivemode = IPG_RM_RECEIVEALLFRAMES; } else if ((dev->flags & IFF_ALLMULTI) || - (dev->flags & IFF_MULTICAST & + ((dev->flags & IFF_MULTICAST) && (dev->mc_count > IPG_MULTICAST_HASHTABLE_SIZE))) { /* NIC to be configured to receive all multicast * frames. */ receivemode |= IPG_RM_RECEIVEMULTICAST; - } else if (dev->flags & IFF_MULTICAST & (dev->mc_count > 0)) { + } else if ((dev->flags & IFF_MULTICAST) && (dev->mc_count > 0)) { /* NIC to be configured to receive selected * multicast addresses. */ receivemode |= IPG_RM_RECEIVEMULTICASTHASH; @@ -631,6 +638,7 @@ static void ipg_nic_set_multicast_list(struct net_device *dev) static int ipg_io_config(struct net_device *dev) { + struct ipg_nic_private *sp = netdev_priv(dev); void __iomem *ioaddr = ipg_ioaddr(dev); u32 origmacctrl; u32 restoremacctrl; @@ -670,7 +678,7 @@ static int ipg_io_config(struct net_device *dev) /* Set RECEIVEMODE register. */ ipg_nic_set_multicast_list(dev); - ipg_w16(IPG_MAX_RXFRAME_SIZE, MAX_FRAME_SIZE); + ipg_w16(sp->max_rxframe_size, MAX_FRAME_SIZE); ipg_w8(IPG_RXDMAPOLLPERIOD_VALUE, RX_DMA_POLL_PERIOD); ipg_w8(IPG_RXDMAURGENTTHRESH_VALUE, RX_DMA_URGENT_THRESH); @@ -730,7 +738,7 @@ static int ipg_get_rxbuff(struct net_device *dev, int entry) IPG_DEBUG_MSG("_get_rxbuff\n"); - skb = netdev_alloc_skb(dev, IPG_RXSUPPORT_SIZE + NET_IP_ALIGN); + skb = netdev_alloc_skb(dev, sp->rxsupport_size + NET_IP_ALIGN); if (!skb) { sp->rx_buff[entry] = NULL; return -ENOMEM; @@ -751,7 +759,7 @@ static int ipg_get_rxbuff(struct net_device *dev, int entry) sp->rx_buf_sz, PCI_DMA_FROMDEVICE)); /* Set the RFD fragment length. */ - rxfragsize = IPG_RXFRAG_SIZE; + rxfragsize = sp->rxfrag_size; rxfd->frag_info |= cpu_to_le64((rxfragsize << 48) & IPG_RFI_FRAGLEN); return 0; @@ -1076,8 +1084,6 @@ static int ipg_nic_rxrestore(struct net_device *dev) return 0; } -#ifdef JUMBO_FRAME - /* use jumboindex and jumbosize to control jumbo frame status * initial status is jumboindex=-1 and jumbosize=0 * 1. jumboindex = -1 and jumbosize=0 : previous jumbo frame has been done. @@ -1097,7 +1103,7 @@ enum { FRAME_WITH_START_WITH_END = 11 }; -inline void ipg_nic_rx_free_skb(struct net_device *dev) +static void ipg_nic_rx_free_skb(struct net_device *dev) { struct ipg_nic_private *sp = netdev_priv(dev); unsigned int entry = sp->rx_current % IPG_RFDLIST_LENGTH; @@ -1113,7 +1119,7 @@ inline void ipg_nic_rx_free_skb(struct net_device *dev) } } -inline int ipg_nic_rx_check_frame_type(struct net_device *dev) +static int ipg_nic_rx_check_frame_type(struct net_device *dev) { struct ipg_nic_private *sp = netdev_priv(dev); struct ipg_rx *rxfd = sp->rxd + (sp->rx_current % IPG_RFDLIST_LENGTH); @@ -1126,7 +1132,7 @@ inline int ipg_nic_rx_check_frame_type(struct net_device *dev) return type; } -inline int ipg_nic_rx_check_error(struct net_device *dev) +static int ipg_nic_rx_check_error(struct net_device *dev) { struct ipg_nic_private *sp = netdev_priv(dev); unsigned int entry = sp->rx_current % IPG_RFDLIST_LENGTH; @@ -1209,8 +1215,8 @@ static void ipg_nic_rx_with_start_and_end(struct net_device *dev, /* accept this frame and send to upper layer */ framelen = le64_to_cpu(rxfd->rfs) & IPG_RFS_RXFRAMELEN; - if (framelen > IPG_RXFRAG_SIZE) - framelen = IPG_RXFRAG_SIZE; + if (framelen > sp->rxfrag_size) + framelen = sp->rxfrag_size; skb_put(skb, framelen); skb->protocol = eth_type_trans(skb, dev); @@ -1243,10 +1249,10 @@ static void ipg_nic_rx_with_start(struct net_device *dev, pci_unmap_single(pdev, le64_to_cpu(rxfd->frag_info & ~IPG_RFI_FRAGLEN), sp->rx_buf_sz, PCI_DMA_FROMDEVICE); - skb_put(skb, IPG_RXFRAG_SIZE); + skb_put(skb, sp->rxfrag_size); jumbo->found_start = 1; - jumbo->current_size = IPG_RXFRAG_SIZE; + jumbo->current_size = sp->rxfrag_size; jumbo->skb = skb; sp->rx_buff[entry] = NULL; @@ -1271,16 +1277,12 @@ static void ipg_nic_rx_with_end(struct net_device *dev, framelen = le64_to_cpu(rxfd->rfs) & IPG_RFS_RXFRAMELEN; - endframeLen = framelen - jumbo->current_size; - /* - if (framelen > IPG_RXFRAG_SIZE) - framelen=IPG_RXFRAG_SIZE; - */ - if (framelen > IPG_RXSUPPORT_SIZE) + endframelen = framelen - jumbo->current_size; + if (framelen > sp->rxsupport_size) dev_kfree_skb_irq(jumbo->skb); else { - memcpy(skb_put(jumbo->skb, endframeLen), - skb->data, endframeLen); + memcpy(skb_put(jumbo->skb, endframelen), + skb->data, endframelen); jumbo->skb->protocol = eth_type_trans(jumbo->skb, dev); @@ -1316,11 +1318,11 @@ static void ipg_nic_rx_no_start_no_end(struct net_device *dev, if (skb) { if (jumbo->found_start) { - jumbo->current_size += IPG_RXFRAG_SIZE; - if (jumbo->current_size <= IPG_RXSUPPORT_SIZE) { + jumbo->current_size += sp->rxfrag_size; + if (jumbo->current_size <= sp->rxsupport_size) { memcpy(skb_put(jumbo->skb, - IPG_RXFRAG_SIZE), - skb->data, IPG_RXFRAG_SIZE); + sp->rxfrag_size), + skb->data, sp->rxfrag_size); } } dev->last_rx = jiffies; @@ -1334,7 +1336,7 @@ static void ipg_nic_rx_no_start_no_end(struct net_device *dev, } } -static int ipg_nic_rx(struct net_device *dev) +static int ipg_nic_rx_jumbo(struct net_device *dev) { struct ipg_nic_private *sp = netdev_priv(dev); unsigned int curr = sp->rx_current; @@ -1352,16 +1354,16 @@ static int ipg_nic_rx(struct net_device *dev) switch (ipg_nic_rx_check_frame_type(dev)) { case FRAME_WITH_START_WITH_END: - ipg_nic_rx_with_start_and_end(dev, tp, rxfd, entry); + ipg_nic_rx_with_start_and_end(dev, sp, rxfd, entry); break; case FRAME_WITH_START: - ipg_nic_rx_with_start(dev, tp, rxfd, entry); + ipg_nic_rx_with_start(dev, sp, rxfd, entry); break; case FRAME_WITH_END: - ipg_nic_rx_with_end(dev, tp, rxfd, entry); + ipg_nic_rx_with_end(dev, sp, rxfd, entry); break; case FRAME_NO_START_NO_END: - ipg_nic_rx_no_start_no_end(dev, tp, rxfd, entry); + ipg_nic_rx_no_start_no_end(dev, sp, rxfd, entry); break; } } @@ -1382,7 +1384,6 @@ static int ipg_nic_rx(struct net_device *dev) return 0; } -#else static int ipg_nic_rx(struct net_device *dev) { /* Transfer received Ethernet frames to higher network layers. */ @@ -1413,11 +1414,11 @@ static int ipg_nic_rx(struct net_device *dev) /* Check for jumbo frame arrival with too small * RXFRAG_SIZE. */ - if (framelen > IPG_RXFRAG_SIZE) { + if (framelen > sp->rxfrag_size) { IPG_DEBUG_MSG ("RFS FrameLen > allocated fragment size.\n"); - framelen = IPG_RXFRAG_SIZE; + framelen = sp->rxfrag_size; } if ((IPG_DROP_ON_RX_ETH_ERRORS && (le64_to_cpu(rxfd->rfs) & @@ -1556,7 +1557,6 @@ static int ipg_nic_rx(struct net_device *dev) return 0; } -#endif static void ipg_reset_after_host_error(struct work_struct *work) { @@ -1592,9 +1592,9 @@ static irqreturn_t ipg_interrupt_handler(int irq, void *dev_inst) IPG_DEBUG_MSG("_interrupt_handler\n"); -#ifdef JUMBO_FRAME - ipg_nic_rxrestore(dev); -#endif + if (sp->is_jumbo) + ipg_nic_rxrestore(dev); + spin_lock(&sp->lock); /* Get interrupt source information, and acknowledge @@ -1650,7 +1650,10 @@ static irqreturn_t ipg_interrupt_handler(int irq, void *dev_inst) sp->RFDListCheckedCount++; #endif - ipg_nic_rx(dev); + if (sp->is_jumbo) + ipg_nic_rx_jumbo(dev); + else + ipg_nic_rx(dev); } /* If TxDMAComplete interrupt, free used TFDs. */ @@ -1749,7 +1752,7 @@ static int ipg_nic_open(struct net_device *dev) IPG_DEBUG_MSG("_nic_open\n"); - sp->rx_buf_sz = IPG_RXSUPPORT_SIZE; + sp->rx_buf_sz = sp->rxsupport_size; /* Check for interrupt line conflicts, and request interrupt * line for IPG. @@ -1804,13 +1807,10 @@ static int ipg_nic_open(struct net_device *dev) if (ipg_config_autoneg(dev) < 0) printk(KERN_INFO "%s: Auto-negotiation error.\n", dev->name); -#ifdef JUMBO_FRAME /* initialize JUMBO Frame control variable */ sp->jumbo.found_start = 0; sp->jumbo.current_size = 0; - sp->jumbo.skb = 0; - dev->mtu = IPG_TXFRAG_SIZE; -#endif + sp->jumbo.skb = NULL; /* Enable transmit and receive operation of the IPG. */ ipg_w32((ipg_r32(MAC_CTRL) | IPG_MC_RX_ENABLE | IPG_MC_TX_ENABLE) & @@ -2119,6 +2119,9 @@ static int ipg_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) static int ipg_nic_change_mtu(struct net_device *dev, int new_mtu) { + struct ipg_nic_private *sp = netdev_priv(dev); + int err; + /* Function to accomodate changes to Maximum Transfer Unit * (or MTU) of IPG NIC. Cannot use default function since * the default will not allow for MTU > 1500 bytes. @@ -2126,16 +2129,33 @@ static int ipg_nic_change_mtu(struct net_device *dev, int new_mtu) IPG_DEBUG_MSG("_nic_change_mtu\n"); - /* Check that the new MTU value is between 68 (14 byte header, 46 - * byte payload, 4 byte FCS) and IPG_MAX_RXFRAME_SIZE, which - * corresponds to the MAXFRAMESIZE register in the IPG. + /* + * Check that the new MTU value is between 68 (14 byte header, 46 byte + * payload, 4 byte FCS) and 10 KB, which is the largest supported MTU. */ - if ((new_mtu < 68) || (new_mtu > IPG_MAX_RXFRAME_SIZE)) + if (new_mtu < 68 || new_mtu > 10240) return -EINVAL; + err = ipg_nic_stop(dev); + if (err) + return err; + dev->mtu = new_mtu; - return 0; + sp->max_rxframe_size = new_mtu; + + sp->rxfrag_size = new_mtu; + if (sp->rxfrag_size > 4088) + sp->rxfrag_size = 4088; + + sp->rxsupport_size = sp->max_rxframe_size; + + if (new_mtu > 0x0600) + sp->is_jumbo = true; + else + sp->is_jumbo = false; + + return ipg_nic_open(dev); } static int ipg_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) @@ -2240,6 +2260,11 @@ static int __devinit ipg_probe(struct pci_dev *pdev, spin_lock_init(&sp->lock); mutex_init(&sp->mii_mutex); + sp->is_jumbo = IPG_IS_JUMBO; + sp->rxfrag_size = IPG_RXFRAG_SIZE; + sp->rxsupport_size = IPG_RXSUPPORT_SIZE; + sp->max_rxframe_size = IPG_MAX_RXFRAME_SIZE; + /* Declare IPG NIC functions for Ethernet device methods. */ dev->open = &ipg_nic_open; |