diff options
Diffstat (limited to 'drivers/net/gianfar.c')
| -rw-r--r-- | drivers/net/gianfar.c | 652 |
1 files changed, 469 insertions, 183 deletions
diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c index b43b2b1..6518334 100644 --- a/drivers/net/gianfar.c +++ b/drivers/net/gianfar.c @@ -1,4 +1,4 @@ -/* +/* * drivers/net/gianfar.c * * Gianfar Ethernet Driver @@ -22,10 +22,9 @@ * B-V +1.62 * * Theory of operation - * This driver is designed for the Triple-speed Ethernet - * controllers on the Freescale 8540/8560 integrated processors, - * as well as the Fast Ethernet Controller on the 8540. - * + * This driver is designed for the non-CPM ethernet controllers + * on the 85xx and 83xx family of integrated processors + * * The driver is initialized through platform_device. Structures which * define the configuration needed by the board are defined in a * board structure in arch/ppc/platforms (though I do not @@ -39,12 +38,12 @@ * * The Gianfar Ethernet Controller uses a ring of buffer * descriptors. The beginning is indicated by a register - * pointing to the physical address of the start of the ring. - * The end is determined by a "wrap" bit being set in the + * pointing to the physical address of the start of the ring. + * The end is determined by a "wrap" bit being set in the * last descriptor of the ring. * * When a packet is received, the RXF bit in the - * IEVENT register is set, triggering an interrupt when the + * IEVENT register is set, triggering an interrupt when the * corresponding bit in the IMASK register is also set (if * interrupt coalescing is active, then the interrupt may not * happen immediately, but will wait until either a set number @@ -52,7 +51,7 @@ * interrupt handler will signal there is work to be done, and * exit. Without NAPI, the packet(s) will be handled * immediately. Both methods will start at the last known empty - * descriptor, and process every subsequent descriptor until there + * descriptor, and process every subsequent descriptor until there * are none left with data (NAPI will stop after a set number of * packets to give time to other tasks, but will eventually * process all the packets). The data arrives inside a @@ -83,9 +82,13 @@ #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/skbuff.h> +#include <linux/if_vlan.h> #include <linux/spinlock.h> #include <linux/mm.h> #include <linux/device.h> +#include <linux/ip.h> +#include <linux/tcp.h> +#include <linux/udp.h> #include <asm/io.h> #include <asm/irq.h> @@ -123,7 +126,7 @@ static int gfar_set_mac_address(struct net_device *dev); static int gfar_change_mtu(struct net_device *dev, int new_mtu); static irqreturn_t gfar_error(int irq, void *dev_id, struct pt_regs *regs); static irqreturn_t gfar_transmit(int irq, void *dev_id, struct pt_regs *regs); -irqreturn_t gfar_receive(int irq, void *dev_id, struct pt_regs *regs); +static irqreturn_t gfar_receive(int irq, void *dev_id, struct pt_regs *regs); static irqreturn_t gfar_interrupt(int irq, void *dev_id, struct pt_regs *regs); static irqreturn_t phy_interrupt(int irq, void *dev_id, struct pt_regs *regs); static void gfar_phy_change(void *data); @@ -139,9 +142,12 @@ static void gfar_set_hash_for_addr(struct net_device *dev, u8 *addr); #ifdef CONFIG_GFAR_NAPI static int gfar_poll(struct net_device *dev, int *budget); #endif -static int gfar_clean_rx_ring(struct net_device *dev, int rx_work_limit); +int gfar_clean_rx_ring(struct net_device *dev, int rx_work_limit); static int gfar_process_frame(struct net_device *dev, struct sk_buff *skb, int length); static void gfar_phy_startup_timer(unsigned long data); +static void gfar_vlan_rx_register(struct net_device *netdev, + struct vlan_group *grp); +static void gfar_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid); extern struct ethtool_ops gfar_ethtool_ops; @@ -149,6 +155,13 @@ MODULE_AUTHOR("Freescale Semiconductor, Inc"); MODULE_DESCRIPTION("Gianfar Ethernet Driver"); MODULE_LICENSE("GPL"); +int gfar_uses_fcb(struct gfar_private *priv) +{ + if (priv->vlan_enable || priv->rx_csum_enable) + return 1; + else + return 0; +} static int gfar_probe(struct device *device) { u32 tempval; @@ -159,7 +172,6 @@ static int gfar_probe(struct device *device) struct resource *r; int idx; int err = 0; - int dev_ethtool_ops = 0; einfo = (struct gianfar_platform_data *) pdev->dev.platform_data; @@ -265,15 +277,69 @@ static int gfar_probe(struct device *device) dev->mtu = 1500; dev->set_multicast_list = gfar_set_multi; - /* Index into the array of possible ethtool - * ops to catch all 4 possibilities */ - if((priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_RMON) == 0) - dev_ethtool_ops += 1; + dev->ethtool_ops = &gfar_ethtool_ops; + + if (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_CSUM) { + priv->rx_csum_enable = 1; + dev->features |= NETIF_F_IP_CSUM; + } else + priv->rx_csum_enable = 0; + + priv->vlgrp = NULL; - if((priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE) == 0) - dev_ethtool_ops += 2; + if (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_VLAN) { + dev->vlan_rx_register = gfar_vlan_rx_register; + dev->vlan_rx_kill_vid = gfar_vlan_rx_kill_vid; - dev->ethtool_ops = gfar_op_array[dev_ethtool_ops]; + dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX; + + priv->vlan_enable = 1; + } + + if (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_EXTENDED_HASH) { + priv->extended_hash = 1; + priv->hash_width = 9; + + priv->hash_regs[0] = &priv->regs->igaddr0; + priv->hash_regs[1] = &priv->regs->igaddr1; + priv->hash_regs[2] = &priv->regs->igaddr2; + priv->hash_regs[3] = &priv->regs->igaddr3; + priv->hash_regs[4] = &priv->regs->igaddr4; + priv->hash_regs[5] = &priv->regs->igaddr5; + priv->hash_regs[6] = &priv->regs->igaddr6; + priv->hash_regs[7] = &priv->regs->igaddr7; + priv->hash_regs[8] = &priv->regs->gaddr0; + priv->hash_regs[9] = &priv->regs->gaddr1; + priv->hash_regs[10] = &priv->regs->gaddr2; + priv->hash_regs[11] = &priv->regs->gaddr3; + priv->hash_regs[12] = &priv->regs->gaddr4; + priv->hash_regs[13] = &priv->regs->gaddr5; + priv->hash_regs[14] = &priv->regs->gaddr6; + priv->hash_regs[15] = &priv->regs->gaddr7; + + } else { + priv->extended_hash = 0; + priv->hash_width = 8; + + priv->hash_regs[0] = &priv->regs->gaddr0; + priv->hash_regs[1] = &priv->regs->gaddr1; + priv->hash_regs[2] = &priv->regs->gaddr2; + priv->hash_regs[3] = &priv->regs->gaddr3; + priv->hash_regs[4] = &priv->regs->gaddr4; + priv->hash_regs[5] = &priv->regs->gaddr5; + priv->hash_regs[6] = &priv->regs->gaddr6; + priv->hash_regs[7] = &priv->regs->gaddr7; + } + + if (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_PADDING) + priv->padding = DEFAULT_PADDING; + else + priv->padding = 0; + + dev->hard_header_len += priv->padding; + + if (dev->features & NETIF_F_IP_CSUM) + dev->hard_header_len += GMAC_FCB_LEN; priv->rx_buffer_size = DEFAULT_RX_BUFFER_SIZE; #ifdef CONFIG_GFAR_BUFSTASH @@ -289,6 +355,9 @@ static int gfar_probe(struct device *device) priv->rxcount = DEFAULT_RXCOUNT; priv->rxtime = DEFAULT_RXTIME; + /* Enable most messages by default */ + priv->msg_enable = (NETIF_MSG_IFUP << 1 ) - 1; + err = register_netdev(dev); if (err) { @@ -360,8 +429,9 @@ static int init_phy(struct net_device *dev) GFP_KERNEL); if(NULL == mii_info) { - printk(KERN_ERR "%s: Could not allocate mii_info\n", - dev->name); + if (netif_msg_ifup(priv)) + printk(KERN_ERR "%s: Could not allocate mii_info\n", + dev->name); return -ENOMEM; } @@ -410,7 +480,8 @@ static int init_phy(struct net_device *dev) curphy = get_phy_info(priv->mii_info); if (curphy == NULL) { - printk(KERN_ERR "%s: No PHY found\n", dev->name); + if (netif_msg_ifup(priv)) + printk(KERN_ERR "%s: No PHY found\n", dev->name); err = -1; goto no_phy; } @@ -421,7 +492,7 @@ static int init_phy(struct net_device *dev) if(curphy->init) { err = curphy->init(priv->mii_info); - if (err) + if (err) goto phy_init_fail; } @@ -446,14 +517,14 @@ static void init_registers(struct net_device *dev) gfar_write(&priv->regs->imask, IMASK_INIT_CLEAR); /* Init hash registers to zero */ - gfar_write(&priv->regs->iaddr0, 0); - gfar_write(&priv->regs->iaddr1, 0); - gfar_write(&priv->regs->iaddr2, 0); - gfar_write(&priv->regs->iaddr3, 0); - gfar_write(&priv->regs->iaddr4, 0); - gfar_write(&priv->regs->iaddr5, 0); - gfar_write(&priv->regs->iaddr6, 0); - gfar_write(&priv->regs->iaddr7, 0); + gfar_write(&priv->regs->igaddr0, 0); + gfar_write(&priv->regs->igaddr1, 0); + gfar_write(&priv->regs->igaddr2, 0); + gfar_write(&priv->regs->igaddr3, 0); + gfar_write(&priv->regs->igaddr4, 0); + gfar_write(&priv->regs->igaddr5, 0); + gfar_write(&priv->regs->igaddr6, 0); + gfar_write(&priv->regs->igaddr7, 0); gfar_write(&priv->regs->gaddr0, 0); gfar_write(&priv->regs->gaddr1, 0); @@ -464,9 +535,6 @@ static void init_registers(struct net_device *dev) gfar_write(&priv->regs->gaddr6, 0); gfar_write(&priv->regs->gaddr7, 0); - /* Zero out rctrl */ - gfar_write(&priv->regs->rctrl, 0x00000000); - /* Zero out the rmon mib registers if it has them */ if (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_RMON) { memset((void *) &(priv->regs->rmon), 0, @@ -497,20 +565,14 @@ static void init_registers(struct net_device *dev) gfar_write(&priv->regs->tbipa, TBIPA_VALUE); } -void stop_gfar(struct net_device *dev) + +/* Halt the receive and transmit queues */ +void gfar_halt(struct net_device *dev) { struct gfar_private *priv = netdev_priv(dev); struct gfar *regs = priv->regs; - unsigned long flags; u32 tempval; - /* Lock it down */ - spin_lock_irqsave(&priv->lock, flags); - - /* Tell the kernel the link is down */ - priv->mii_info->link = 0; - adjust_link(dev); - /* Mask all interrupts */ gfar_write(®s->imask, IMASK_INIT_CLEAR); @@ -533,13 +595,29 @@ void stop_gfar(struct net_device *dev) tempval = gfar_read(®s->maccfg1); tempval &= ~(MACCFG1_RX_EN | MACCFG1_TX_EN); gfar_write(®s->maccfg1, tempval); +} + +void stop_gfar(struct net_device *dev) +{ + struct gfar_private *priv = netdev_priv(dev); + struct gfar *regs = priv->regs; + unsigned long flags; + + /* Lock it down */ + spin_lock_irqsave(&priv->lock, flags); + + /* Tell the kernel the link is down */ + priv->mii_info->link = 0; + adjust_link(dev); + + gfar_halt(dev); if (priv->einfo->board_flags & FSL_GIANFAR_BRD_HAS_PHY_INTR) { /* Clear any pending interrupts */ mii_clear_phy_interrupt(priv->mii_info); /* Disable PHY Interrupts */ - mii_configure_phy_interrupt(priv->mii_info, + mii_configure_phy_interrupt(priv->mii_info, MII_INTERRUPT_DISABLED); } @@ -566,7 +644,7 @@ void stop_gfar(struct net_device *dev) sizeof(struct txbd8)*priv->tx_ring_size + sizeof(struct rxbd8)*priv->rx_ring_size, priv->tx_bd_base, - gfar_read(®s->tbase)); + gfar_read(®s->tbase0)); } /* If there are any tx skbs or rx skbs still around, free them. @@ -620,6 +698,34 @@ void free_skb_resources(struct gfar_private *priv) } } +void gfar_start(struct net_device *dev) +{ + struct gfar_private *priv = netdev_priv(dev); + struct gfar *regs = priv->regs; + u32 tempval; + + /* Enable Rx and Tx in MACCFG1 */ + tempval = gfar_read(®s->maccfg1); + tempval |= (MACCFG1_RX_EN | MACCFG1_TX_EN); + gfar_write(®s->maccfg1, tempval); + + /* Initialize DMACTRL to have WWR and WOP */ + tempval = gfar_read(&priv->regs->dmactrl); + tempval |= DMACTRL_INIT_SETTINGS; + gfar_write(&priv->regs->dmactrl, tempval); + + /* Clear THLT, so that the DMA starts polling now */ + gfar_write(®s->tstat, TSTAT_CLEAR_THALT); + + /* Make sure we aren't stopped */ + tempval = gfar_read(&priv->regs->dmactrl); + tempval &= ~(DMACTRL_GRS | DMACTRL_GTS); + gfar_write(&priv->regs->dmactrl, tempval); + + /* Unmask the interrupts we look for */ + gfar_write(®s->imask, IMASK_DEFAULT); +} + /* Bring the controller up and running */ int startup_gfar(struct net_device *dev) { @@ -630,33 +736,34 @@ int startup_gfar(struct net_device *dev) int i; struct gfar_private *priv = netdev_priv(dev); struct gfar *regs = priv->regs; - u32 tempval; int err = 0; + u32 rctrl = 0; gfar_write(®s->imask, IMASK_INIT_CLEAR); /* Allocate memory for the buffer descriptors */ - vaddr = (unsigned long) dma_alloc_coherent(NULL, + vaddr = (unsigned long) dma_alloc_coherent(NULL, sizeof (struct txbd8) * priv->tx_ring_size + sizeof (struct rxbd8) * priv->rx_ring_size, &addr, GFP_KERNEL); if (vaddr == 0) { - printk(KERN_ERR "%s: Could not allocate buffer descriptors!\n", - dev->name); + if (netif_msg_ifup(priv)) + printk(KERN_ERR "%s: Could not allocate buffer descriptors!\n", + dev->name); return -ENOMEM; } priv->tx_bd_base = (struct txbd8 *) vaddr; /* enet DMA only understands physical addresses */ - gfar_write(®s->tbase, addr); + gfar_write(®s->tbase0, addr); /* Start the rx descriptor ring where the tx ring leaves off */ addr = addr + sizeof (struct txbd8) * priv->tx_ring_size; vaddr = vaddr + sizeof (struct txbd8) * priv->tx_ring_size; priv->rx_bd_base = (struct rxbd8 *) vaddr; - gfar_write(®s->rbase, addr); + gfar_write(®s->rbase0, addr); /* Setup the skbuff rings */ priv->tx_skbuff = @@ -664,8 +771,9 @@ int startup_gfar(struct net_device *dev) priv->tx_ring_size, GFP_KERNEL); if (priv->tx_skbuff == NULL) { - printk(KERN_ERR "%s: Could not allocate tx_skbuff\n", - dev->name); + if (netif_msg_ifup(priv)) + printk(KERN_ERR "%s: Could not allocate tx_skbuff\n", + dev->name); err = -ENOMEM; goto tx_skb_fail; } @@ -678,8 +786,9 @@ int startup_gfar(struct net_device *dev) priv->rx_ring_size, GFP_KERNEL); if (priv->rx_skbuff == NULL) { - printk(KERN_ERR "%s: Could not allocate rx_skbuff\n", - dev->name); + if (netif_msg_ifup(priv)) + printk(KERN_ERR "%s: Could not allocate rx_skbuff\n", + dev->name); err = -ENOMEM; goto rx_skb_fail; } @@ -726,12 +835,13 @@ int startup_gfar(struct net_device *dev) /* If the device has multiple interrupts, register for * them. Otherwise, only register for the one */ if (priv->einfo->device_flags & FSL_GIANFAR_DEV_HAS_MULTI_INTR) { - /* Install our interrupt handlers for Error, + /* Install our interrupt handlers for Error, * Transmit, and Receive */ if (request_irq(priv->interruptError, gfar_error, 0, "enet_error", dev) < 0) { - printk(KERN_ERR "%s: Can't get IRQ %d\n", - dev->name, priv->interruptError); + if (netif_msg_intr(priv)) + printk(KERN_ERR "%s: Can't get IRQ %d\n", + dev->name, priv->interruptError); err = -1; goto err_irq_fail; @@ -739,8 +849,9 @@ int startup_gfar(struct net_device *dev) if (request_irq(priv->interruptTransmit, gfar_transmit, 0, "enet_tx", dev) < 0) { - printk(KERN_ERR "%s: Can't get IRQ %d\n", - dev->name, priv->interruptTransmit); + if (netif_msg_intr(priv)) + printk(KERN_ERR "%s: Can't get IRQ %d\n", + dev->name, priv->interruptTransmit); err = -1; @@ -749,8 +860,9 @@ int startup_gfar(struct net_device *dev) if (request_irq(priv->interruptReceive, gfar_receive, 0, "enet_rx", dev) < 0) { - printk(KERN_ERR "%s: Can't get IRQ %d (receive0)\n", - dev->name, priv->interruptReceive); + if (netif_msg_intr(priv)) + printk(KERN_ERR "%s: Can't get IRQ %d (receive0)\n", + dev->name, priv->interruptReceive); err = -1; goto rx_irq_fail; @@ -758,8 +870,9 @@ int startup_gfar(struct net_device *dev) } else { if (request_irq(priv->interruptTransmit, gfar_interrupt, 0, "gfar_interrupt", dev) < 0) { - printk(KERN_ERR "%s: Can't get IRQ %d\n", - dev->name, priv->interruptError); + if (netif_msg_intr(priv)) + printk(KERN_ERR "%s: Can't get IRQ %d\n", + dev->name, priv->interruptError); err = -1; goto err_irq_fail; @@ -787,28 +900,22 @@ int startup_gfar(struct net_device *dev) else gfar_write(®s->rxic, 0); - init_waitqueue_head(&priv->rxcleanupq); + if (priv->rx_csum_enable) + rctrl |= RCTRL_CHECKSUMMING; - /* Enable Rx and Tx in MACCFG1 */ - tempval = gfar_read(®s->maccfg1); - tempval |= (MACCFG1_RX_EN | MACCFG1_TX_EN); - gfar_write(®s->maccfg1, tempval); + if (priv->extended_hash) + rctrl |= RCTRL_EXTHASH; - /* Initialize DMACTRL to have WWR and WOP */ - tempval = gfar_read(&priv->regs->dmactrl); - tempval |= DMACTRL_INIT_SETTINGS; - gfar_write(&priv->regs->dmactrl, tempval); + if (priv->vlan_enable) + rctrl |= RCTRL_VLAN; - /* Clear THLT, so that the DMA starts polling now */ - gfar_write(®s->tstat, TSTAT_CLEAR_THALT); + /* Init rctrl based on our settings */ + gfar_write(&priv->regs->rctrl, rctrl); - /* Make sure we aren't stopped */ - tempval = gfar_read(&priv->regs->dmactrl); - tempval &= ~(DMACTRL_GRS | DMACTRL_GTS); - gfar_write(&priv->regs->dmactrl, tempval); + if (dev->features & NETIF_F_IP_CSUM) + gfar_write(&priv->regs->tctrl, TCTRL_INIT_CSUM); - /* Unmask the interrupts we look for */ - gfar_write(®s->imask, IMASK_DEFAULT); + gfar_start(dev); return 0; @@ -824,7 +931,7 @@ tx_skb_fail: sizeof(struct txbd8)*priv->tx_ring_size + sizeof(struct rxbd8)*priv->rx_ring_size, priv->tx_bd_base, - gfar_read(®s->tbase)); + gfar_read(®s->tbase0)); if (priv->mii_info->phyinfo->close) priv->mii_info->phyinfo->close(priv->mii_info); @@ -857,11 +964,62 @@ static int gfar_enet_open(struct net_device *dev) return err; } +static struct txfcb *gfar_add_fcb(struct sk_buff *skb, struct txbd8 *bdp) +{ + struct txfcb *fcb = (struct txfcb *)skb_push (skb, GMAC_FCB_LEN); + + memset(fcb, 0, GMAC_FCB_LEN); + + /* Flag the bd so the controller looks for the FCB */ + bdp->status |= TXBD_TOE; + + return fcb; +} + +static inline void gfar_tx_checksum(struct sk_buff *skb, struct txfcb *fcb) +{ + int len; + + /* If we're here, it's a IP packet with a TCP or UDP + * payload. We set it to checksum, using a pseudo-header + * we provide + */ + fcb->ip = 1; + fcb->tup = 1; + fcb->ctu = 1; + fcb->nph = 1; + + /* Notify the controller what the protocol is */ + if (skb->nh.iph->protocol == IPPROTO_UDP) + fcb->udp = 1; + + /* l3os is the distance between the start of the + * frame (skb->data) and the start of the IP hdr. + * l4os is the distance between the start of the + * l3 hdr and the l4 hdr */ + fcb->l3os = (u16)(skb->nh.raw - skb->data - GMAC_FCB_LEN); + fcb->l4os = (u16)(skb->h.raw - skb->nh.raw); + + len = skb->nh.iph->tot_len - fcb->l4os; + + /* Provide the pseudoheader csum */ + fcb->phcs = ~csum_tcpudp_magic(skb->nh.iph->saddr, + skb->nh.iph->daddr, len, + skb->nh.iph->protocol, 0); +} + +void gfar_tx_vlan(struct sk_buff *skb, struct txfcb *fcb) +{ + fcb->vln = 1; + fcb->vlctl = vlan_tx_tag_get(skb); +} + /* This is called by the kernel when a frame is ready for transmission. */ /* It is pointed to by the dev->hard_start_xmit function pointer */ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev) { struct gfar_private *priv = netdev_priv(dev); + struct txfcb *fcb = NULL; struct txbd8 *txbdp; /* Update transmit stats */ @@ -876,9 +1034,24 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev) /* Clear all but the WRAP status flags */ txbdp->status &= TXBD_WRAP; + /* Set up checksumming */ + if ((dev->features & NETIF_F_IP_CSUM) + && (CHECKSUM_HW == skb->ip_summed)) { + fcb = gfar_add_fcb(skb, txbdp); + gfar_tx_checksum(skb, fcb); + } + + if (priv->vlan_enable && + unlikely(priv->vlgrp && vlan_tx_tag_present(skb))) { + if (NULL == fcb) + fcb = gfar_add_fcb(skb, txbdp); + + gfar_tx_vlan(skb, fcb); + } + /* Set buffer length and pointer */ txbdp->length = skb->len; - txbdp->bufPtr = dma_map_single(NULL, skb->data, + txbdp->bufPtr = dma_map_single(NULL, skb->data, skb->len, DMA_TO_DEVICE); /* Save the skb pointer so we can free it later */ @@ -972,15 +1145,78 @@ int gfar_set_mac_address(struct net_device *dev) } +/* Enables and disables VLAN insertion/extraction */ +static void gfar_vlan_rx_register(struct net_device *dev, + struct vlan_group *grp) +{ + struct gfar_private *priv = netdev_priv(dev); + unsigned long flags; + u32 tempval; + + spin_lock_irqsave(&priv->lock, flags); + + priv->vlgrp = grp; + + if (grp) { + /* Enable VLAN tag insertion */ + tempval = gfar_read(&priv->regs->tctrl); + tempval |= TCTRL_VLINS; + + gfar_write(&priv->regs->tctrl, tempval); + + /* Enable VLAN tag extraction */ + tempval = gfar_read(&priv->regs->rctrl); + tempval |= RCTRL_VLEX; + gfar_write(&priv->regs->rctrl, tempval); + } else { + /* Disable VLAN tag insertion */ + tempval = gfar_read(&priv->regs->tctrl); + tempval &= ~TCTRL_VLINS; + gfar_write(&priv->regs->tctrl, tempval); + + /* Disable VLAN tag extraction */ + tempval = gfar_read(&priv->regs->rctrl); + tempval &= ~RCTRL_VLEX; + gfar_write(&priv->regs->rctrl, tempval); + } + + spin_unlock_irqrestore(&priv->lock, flags); +} + + +static void gfar_vlan_rx_kill_vid(struct net_device *dev, uint16_t vid) +{ + struct gfar_private *priv = netdev_priv(dev); + unsigned long flags; + + spin_lock_irqsave(&priv->lock, flags); + + if (priv->vlgrp) + priv->vlgrp->vlan_devices[vid] = NULL; + + spin_unlock_irqrestore(&priv->lock, flags); +} + + static int gfar_change_mtu(struct net_device *dev, int new_mtu) { int tempsize, tempval; struct gfar_private *priv = netdev_priv(dev); int oldsize = priv->rx_buffer_size; - int frame_size = new_mtu + 18; + int frame_size = new_mtu + ETH_HLEN; + + if (priv->vlan_enable) + frame_size += VLAN_ETH_HLEN; + + if (gfar_uses_fcb(priv)) + frame_size += GMAC_FCB_LEN; + + frame_size += priv->padding; if ((frame_size < 64) || (frame_size > JUMBO_FRAME_SIZE)) { - printk(KERN_ERR "%s: Invalid MTU setting\n", dev->name); + if (netif_msg_drv(priv)) + printk(KERN_ERR "%s: Invalid MTU setting\n", + dev->name); return -EINVAL; } @@ -1120,7 +1356,7 @@ struct sk_buff * gfar_new_skb(struct net_device *dev, struct rxbd8 *bdp) skb->dev = dev; bdp->bufPtr = dma_map_single(NULL, skb->data, - priv->rx_buffer_size + RXBUF_ALIGNMENT, + priv->rx_buffer_size + RXBUF_ALIGNMENT, DMA_FROM_DEVICE); bdp->length = 0; @@ -1190,11 +1426,10 @@ irqreturn_t gfar_receive(int irq, void *dev_id, struct pt_regs *regs) __netif_rx_schedule(dev); } else { -#ifdef VERBOSE_GFAR_ERRORS - printk(KERN_DEBUG "%s: receive called twice (%x)[%x]\n", - dev->name, gfar_read(&priv->regs->ievent), - gfar_read(&priv->regs->imask)); -#endif + if (netif_msg_rx_err(priv)) + printk(KERN_DEBUG "%s: receive called twice (%x)[%x]\n", + dev->name, gfar_read(&priv->regs->ievent), + gfar_read(&priv->regs->imask)); } #else @@ -1209,15 +1444,43 @@ irqreturn_t gfar_receive(int irq, void *dev_id, struct pt_regs *regs) else gfar_write(&priv->regs->rxic, 0); - /* Just in case we need to wake the ring param changer */ - priv->rxclean = 1; - spin_unlock(&priv->lock); #endif return IRQ_HANDLED; } +static inline int gfar_rx_vlan(struct sk_buff *skb, + struct vlan_group *vlgrp, unsigned short vlctl) +{ +#ifdef CONFIG_GFAR_NAPI + return vlan_hwaccel_receive_skb(skb, vlgrp, vlctl); +#else + return vlan_hwaccel_rx(skb, vlgrp, vlctl); +#endif +} + +static inline void gfar_rx_checksum(struct sk_buff *skb, struct rxfcb *fcb) +{ + /* If valid headers were found, and valid sums + * were verified, then we tell the kernel that no + * checksumming is necessary. Otherwise, it is */ + if (fcb->cip && !fcb->eip && fcb->ctu && !fcb->etu) + skb->ip_summed = CHECKSUM_UNNECESSARY; + else + skb->ip_summed = CHECKSUM_NONE; +} + + +static inline struct rxfcb *gfar_get_fcb(struct sk_buff *skb) +{ + struct rxfcb *fcb = (struct rxfcb *)skb->data; + + /* Remove the FCB from the skb */ + skb_pull(skb, GMAC_FCB_LEN); + + return fcb; +} /* gfar_process_frame() -- handle one incoming packet if skb * isn't NULL. */ @@ -1225,35 +1488,51 @@ static int gfar_process_frame(struct net_device *dev, struct sk_buff *skb, int length) { struct gfar_private *priv = netdev_priv(dev); + struct rxfcb *fcb = NULL; if (skb == NULL) { -#ifdef BRIEF_GFAR_ERRORS - printk(KERN_WARNING "%s: Missing skb!!.\n", - dev->name); -#endif + if (netif_msg_rx_err(priv)) + printk(KERN_WARNING "%s: Missing skb!!.\n", dev->name); priv->stats.rx_dropped++; priv->extra_stats.rx_skbmissing++; } else { + int ret; + /* Prep the skb for the packet */ skb_put(skb, length); + /* Grab the FCB if there is one */ + if (gfar_uses_fcb(priv)) + fcb = gfar_get_fcb(skb); + + /* Remove the padded bytes, if there are any */ + if (priv->padding) + skb_pull(skb, priv->padding); + + if (priv->rx_csum_enable) + gfar_rx_checksum(skb, fcb); + /* Tell the skb what kind of packet this is */ skb->protocol = eth_type_trans(skb, dev); /* Send the packet up the stack */ - if (RECEIVE(skb) == NET_RX_DROP) { + if (unlikely(priv->vlgrp && fcb->vln)) + ret = gfar_rx_vlan(skb, priv->vlgrp, fcb->vlctl); + else + ret = RECEIVE(skb); + + if (NET_RX_DROP == ret) priv->extra_stats.kernel_dropped++; - } } return 0; } /* gfar_clean_rx_ring() -- Processes each frame in the rx ring - * until the budget/quota has been reached. Returns the number + * until the budget/quota has been reached. Returns the number * of frames handled */ -static int gfar_clean_rx_ring(struct net_device *dev, int rx_work_limit) +int gfar_clean_rx_ring(struct net_device *dev, int rx_work_limit) { struct rxbd8 *bdp; struct sk_buff *skb; @@ -1355,9 +1634,6 @@ static int gfar_poll(struct net_device *dev, int *budget) mk_ic_value(priv->rxcount, priv->rxtime)); else gfar_write(&priv->regs->rxic, 0); - - /* Signal to the ring size changer that it's safe to go */ - priv->rxclean = 1; } return (rx_work_limit < 0) ? 1 : 0; @@ -1393,10 +1669,8 @@ static irqreturn_t gfar_interrupt(int irq, void *dev_id, struct pt_regs *regs) if (events & IEVENT_CRL) priv->stats.tx_aborted_errors++; if (events & IEVENT_XFUN) { -#ifdef VERBOSE_GFAR_ERRORS - printk(KERN_WARNING "%s: tx underrun. dropped packet\n", - dev->name); -#endif + if (netif_msg_tx_err(priv)) + printk(KERN_WARNING "%s: tx underrun. dropped packet\n", dev->name); priv->stats.tx_dropped++; priv->extra_stats.tx_underrun++; @@ -1415,36 +1689,30 @@ static irqreturn_t gfar_interrupt(int irq, void *dev_id, struct pt_regs *regs) gfar_write(&priv->regs->rstat, RSTAT_CLEAR_RHALT); #endif -#ifdef VERBOSE_GFAR_ERRORS - printk(KERN_DEBUG "%s: busy error (rhalt: %x)\n", dev->name, - gfar_read(&priv->regs->rstat)); -#endif + if (netif_msg_rx_err(priv)) + printk(KERN_DEBUG "%s: busy error (rhalt: %x)\n", + dev->name, + gfar_read(&priv->regs->rstat)); } if (events & IEVENT_BABR) { priv->stats.rx_errors++; priv->extra_stats.rx_babr++; -#ifdef VERBOSE_GFAR_ERRORS - printk(KERN_DEBUG "%s: babbling error\n", dev->name); -#endif + if (netif_msg_rx_err(priv)) + printk(KERN_DEBUG "%s: babbling error\n", dev->name); } if (events & IEVENT_EBERR) { priv->extra_stats.eberr++; -#ifdef VERBOSE_GFAR_ERRORS - printk(KERN_DEBUG "%s: EBERR\n", dev->name); -#endif - } - if (events & IEVENT_RXC) { -#ifdef VERBOSE_GFAR_ERRORS - printk(KERN_DEBUG "%s: control frame\n", dev->name); -#endif + if (netif_msg_rx_err(priv)) + printk(KERN_DEBUG "%s: EBERR\n", dev->name); } + if ((events & IEVENT_RXC) && (netif_msg_rx_err(priv))) + printk(KERN_DEBUG "%s: control frame\n", dev->name); if (events & IEVENT_BABT) { priv->extra_stats.tx_babt++; -#ifdef VERBOSE_GFAR_ERRORS - printk(KERN_DEBUG "%s: babt error\n", dev->name); -#endif + if (netif_msg_rx_err(priv)) + printk(KERN_DEBUG "%s: babt error\n", dev->name); } return IRQ_HANDLED; @@ -1510,7 +1778,7 @@ static void gfar_phy_timer(unsigned long data) * If, after GFAR_AN_TIMEOUT seconds, it has not * finished, we switch to forced. * Either way, once the process has completed, we either - * request the interrupt, or switch the timer over to + * request the interrupt, or switch the timer over to * using gfar_phy_timer to check status */ static void gfar_phy_startup_timer(unsigned long data) { @@ -1535,8 +1803,9 @@ static void gfar_phy_startup_timer(unsigned long data) /* Forcing failed! Give up */ if(result) { - printk(KERN_ERR "%s: Forcing failed!\n", - mii_info->dev->name); + if (netif_msg_link(priv)) + printk(KERN_ERR "%s: Forcing failed!\n", + mii_info->dev->name); return; } } @@ -1546,16 +1815,17 @@ static void gfar_phy_startup_timer(unsigned long data) /* Grab the PHY interrupt, if necessary/possible */ if (priv->einfo->board_flags & FSL_GIANFAR_BRD_HAS_PHY_INTR) { - if (request_irq(priv->einfo->interruptPHY, + if (request_irq(priv->einfo->interruptPHY, phy_interrupt, - SA_SHIRQ, - "phy_interrupt", + SA_SHIRQ, + "phy_interrupt", mii_info->dev) < 0) { - printk(KERN_ERR "%s: Can't get IRQ %d (PHY)\n", - mii_info->dev->name, + if (netif_msg_intr(priv)) + printk(KERN_ERR "%s: Can't get IRQ %d (PHY)\n", + mii_info->dev->name, priv->einfo->interruptPHY); } else { - mii_configure_phy_interrupt(priv->mii_info, + mii_configure_phy_interrupt(priv->mii_info, MII_INTERRUPT_ENABLED); return; } @@ -1592,15 +1862,17 @@ static void adjust_link(struct net_device *dev) tempval &= ~(MACCFG2_FULL_DUPLEX); gfar_write(®s->maccfg2, tempval); - printk(KERN_INFO "%s: Half Duplex\n", - dev->name); + if (netif_msg_link(priv)) + printk(KERN_INFO "%s: Half Duplex\n", + dev->name); } else { tempval = gfar_read(®s->maccfg2); tempval |= MACCFG2_FULL_DUPLEX; gfar_write(®s->maccfg2, tempval); - printk(KERN_INFO "%s: Full Duplex\n", - dev->name); + if (netif_msg_link(priv)) + printk(KERN_INFO "%s: Full Duplex\n", + dev->name); } priv->oldduplex = mii_info->duplex; @@ -1622,27 +1894,32 @@ static void adjust_link(struct net_device *dev) gfar_write(®s->maccfg2, tempval); break; default: - printk(KERN_WARNING - "%s: Ack! Speed (%d) is not 10/100/1000!\n", - dev->name, mii_info->speed); + if (netif_msg_link(priv)) + printk(KERN_WARNING + "%s: Ack! Speed (%d) is not 10/100/1000!\n", + dev->name, mii_info->speed); break; } - printk(KERN_INFO "%s: Speed %dBT\n", dev->name, - mii_info->speed); + if (netif_msg_link(priv)) + printk(KERN_INFO "%s: Speed %dBT\n", dev->name, + mii_info->speed); priv->oldspeed = mii_info->speed; } if (!priv->oldlink) { - printk(KERN_INFO "%s: Link is up\n", dev->name); + if (netif_msg_link(priv)) + printk(KERN_INFO "%s: Link is up\n", dev->name); priv->oldlink = 1; netif_carrier_on(dev); netif_schedule(dev); } } else { if (priv->oldlink) { - printk(KERN_INFO "%s: Link is down\n", dev->name); + if (netif_msg_link(priv)) + printk(KERN_INFO "%s: Link is down\n", + dev->name); priv->oldlink = 0; priv->oldspeed = 0; priv->oldduplex = -1; @@ -1664,8 +1941,9 @@ static void gfar_set_multi(struct net_device *dev) u32 tempval; if(dev->flags & IFF_PROMISC) { - printk(KERN_INFO "%s: Entering promiscuous mode.\n", - dev->name); + if (netif_msg_drv(priv)) + printk(KERN_INFO "%s: Entering promiscuous mode.\n", + dev->name); /* Set RCTRL to PROM */ tempval = gfar_read(®s->rctrl); tempval |= RCTRL_PROM; @@ -1679,6 +1957,14 @@ static void gfar_set_multi(struct net_device *dev) if(dev->flags & IFF_ALLMULTI) { /* Set the hash to rx all multicast frames */ + gfar_write(®s->igaddr0, 0xffffffff); + gfar_write(®s->igaddr1, 0xffffffff); + gfar_write(®s->igaddr2, 0xffffffff); + gfar_write(®s->igaddr3, 0xffffffff); + gfar_write(®s->igaddr4, 0xffffffff); + gfar_write(®s->igaddr5, 0xffffffff); + gfar_write(®s->igaddr6, 0xffffffff); + gfar_write(®s->igaddr7, 0xffffffff); gfar_write(®s->gaddr0, 0xffffffff); gfar_write(®s->gaddr1, 0xffffffff); gfar_write(®s->gaddr2, 0xffffffff); @@ -1689,6 +1975,14 @@ static void gfar_set_multi(struct net_device *dev) gfar_write(®s->gaddr7, 0xffffffff); } else { /* zero out the hash */ + gfar_write(®s->igaddr0, 0x0); + gfar_write(®s->igaddr1, 0x0); + gfar_write(®s->igaddr2, 0x0); + gfar_write(®s->igaddr3, 0x0); + gfar_write(®s->igaddr4, 0x0); + gfar_write(®s->igaddr5, 0x0); + gfar_write(®s->igaddr6, 0x0); + gfar_write(®s->igaddr7, 0x0); gfar_write(®s->gaddr0, 0x0); gfar_write(®s->gaddr1, 0x0); gfar_write(®s->gaddr2, 0x0); @@ -1727,16 +2021,15 @@ static void gfar_set_hash_for_addr(struct net_device *dev, u8 *addr) { u32 tempval; struct gfar_private *priv = netdev_priv(dev); - struct gfar *regs = priv->regs; - u32 *hash = ®s->gaddr0; u32 result = ether_crc(MAC_ADDR_LEN, addr); - u8 whichreg = ((result >> 29) & 0x7); - u8 whichbit = ((result >> 24) & 0x1f); + int width = priv->hash_width; + u8 whichbit = (result >> (32 - width)) & 0x1f; + u8 whichreg = result >> (32 - width + 5); u32 value = (1 << (31-whichbit)); - tempval = gfar_read(&hash[whichreg]); + tempval = gfar_read(priv->hash_regs[whichreg]); tempval |= value; - gfar_write(&hash[whichreg], tempval); + gfar_write(priv->hash_regs[whichreg], tempval); return; } @@ -1754,10 +2047,9 @@ static irqreturn_t gfar_error(int irq, void *dev_id, struct pt_regs *regs) gfar_write(&priv->regs->ievent, IEVENT_ERR_MASK); /* Hmm... */ -#if defined (BRIEF_GFAR_ERRORS) || defined (VERBOSE_GFAR_ERRORS) - printk(KERN_DEBUG "%s: error interrupt (ievent=0x%08x imask=0x%08x)\n", - dev->name, events, gfar_read(&priv->regs->imask)); -#endif + if (netif_msg_rx_err(priv) || netif_msg_tx_err(priv)) + printk(KERN_DEBUG "%s: error interrupt (ievent=0x%08x imask=0x%08x)\n", + dev->name, events, gfar_read(&priv->regs->imask)); /* Update the error counters */ if (events & IEVENT_TXE) { @@ -1768,19 +2060,17 @@ static irqreturn_t gfar_error(int irq, void *dev_id, struct pt_regs *regs) if (events & IEVENT_CRL) priv->stats.tx_aborted_errors++; if (events & IEVENT_XFUN) { -#ifdef VERBOSE_GFAR_ERRORS - printk(KERN_DEBUG "%s: underrun. packet dropped.\n", - dev->name); -#endif + if (netif_msg_tx_err(priv)) + printk(KERN_DEBUG "%s: underrun. packet dropped.\n", + dev->name); priv->stats.tx_dropped++; priv->extra_stats.tx_underrun++; /* Reactivate the Tx Queues */ gfar_write(&priv->regs->tstat, TSTAT_CLEAR_THALT); } -#ifdef VERBOSE_GFAR_ERRORS - printk(KERN_DEBUG "%s: Transmit Error\n", dev->name); -#endif + if (netif_msg_tx_err(priv)) + printk(KERN_DEBUG "%s: Transmit Error\n", dev->name); } if (events & IEVENT_BSY) { priv->stats.rx_errors++; @@ -1793,35 +2083,31 @@ static irqreturn_t gfar_error(int irq, void *dev_id, struct pt_regs *regs) gfar_write(&priv->regs->rstat, RSTAT_CLEAR_RHALT); #endif -#ifdef VERBOSE_GFAR_ERRORS - printk(KERN_DEBUG "%s: busy error (rhalt: %x)\n", dev->name, - gfar_read(&priv->regs->rstat)); -#endif + if (netif_msg_rx_err(priv)) + printk(KERN_DEBUG "%s: busy error (rhalt: %x)\n", + dev->name, + gfar_read(&priv->regs->rstat)); } if (events & IEVENT_BABR) { priv->stats.rx_errors++; priv->extra_stats.rx_babr++; -#ifdef VERBOSE_GFAR_ERRORS - printk(KERN_DEBUG "%s: babbling error\n", dev->name); -#endif + if (netif_msg_rx_err(priv)) + printk(KERN_DEBUG "%s: babbling error\n", dev->name); } if (events & IEVENT_EBERR) { priv->extra_stats.eberr++; -#ifdef VERBOSE_GFAR_ERRORS - printk(KERN_DEBUG "%s: EBERR\n", dev->name); -#endif + if (netif_msg_rx_err(priv)) + printk(KERN_DEBUG "%s: EBERR\n", dev->name); } - if (events & IEVENT_RXC) -#ifdef VERBOSE_GFAR_ERRORS - printk(KERN_DEBUG "%s: control frame\n", dev->name); -#endif + if ((events & IEVENT_RXC) && netif_msg_rx_status(priv)) + if (netif_msg_rx_status(priv)) + printk(KERN_DEBUG "%s: control frame\n", dev->name); if (events & IEVENT_BABT) { priv->extra_stats.tx_babt++; -#ifdef VERBOSE_GFAR_ERRORS - printk(KERN_DEBUG "%s: babt error\n", dev->name); -#endif + if (netif_msg_tx_err(priv)) + printk(KERN_DEBUG "%s: babt error\n", dev->name); } return IRQ_HANDLED; } |