drivers/staging/bcm/Bcmnet.c

   1 #include "headers.h"
   2
   3 struct net_device *gblpnetdev;
   4
   5 static INT bcm_open(struct net_device *dev)
   6 {
   7         struct bcm_mini_adapter *Adapter = GET_BCM_ADAPTER(dev);
   8
   9         if (Adapter->fw_download_done == FALSE) {
  10                 pr_notice(PFX "%s: link up failed (download in progress)\n",
  11                           dev->name);
  12                 return -EBUSY;
  13         }
  14
  15         if (netif_msg_ifup(Adapter))
  16                 pr_info(PFX "%s: enabling interface\n", dev->name);
  17
  18         if (Adapter->LinkUpStatus) {
  19                 if (netif_msg_link(Adapter))
  20                         pr_info(PFX "%s: link up\n", dev->name);
  21
  22                 netif_carrier_on(Adapter->dev);
  23                 netif_start_queue(Adapter->dev);
  24         }
  25
  26         return 0;
  27 }
  28
  29 static INT bcm_close(struct net_device *dev)
  30 {
  31         struct bcm_mini_adapter *Adapter = GET_BCM_ADAPTER(dev);
  32
  33         if (netif_msg_ifdown(Adapter))
  34                 pr_info(PFX "%s: disabling interface\n", dev->name);
  35
  36         netif_carrier_off(dev);
  37         netif_stop_queue(dev);
  38
  39         return 0;
  40 }
  41
  42 static u16 bcm_select_queue(struct net_device *dev, struct sk_buff *skb)
  43 {
  44         return ClassifyPacket(netdev_priv(dev), skb);
  45 }
  46
  47 /*******************************************************************
  48 * Function    - bcm_transmit()
  49 *
  50 * Description - This is the main transmit function for our virtual
  51 *               interface(eth0). It handles the ARP packets. It
  52 *               clones this packet and then Queue it to a suitable
  53 *               Queue. Then calls the transmit_packet().
  54 *
  55 * Parameter   -  skb - Pointer to the socket buffer structure
  56 *                dev - Pointer to the virtual net device structure
  57 *
  58 *********************************************************************/
  59
  60 static netdev_tx_t bcm_transmit(struct sk_buff *skb, struct net_device *dev)
  61 {
  62         struct bcm_mini_adapter *Adapter = GET_BCM_ADAPTER(dev);
  63         u16 qindex = skb_get_queue_mapping(skb);
  64
  65
  66         if (Adapter->device_removed || !Adapter->LinkUpStatus)
  67                 goto drop;
  68
  69         if (Adapter->TransferMode != IP_PACKET_ONLY_MODE)
  70                 goto drop;
  71
  72         if (INVALID_QUEUE_INDEX == qindex)
  73                 goto drop;
  74
  75         if (Adapter->PackInfo[qindex].uiCurrentPacketsOnHost >=
  76             SF_MAX_ALLOWED_PACKETS_TO_BACKUP)
  77                 return NETDEV_TX_BUSY;
  78
  79         /* Now Enqueue the packet */
  80         if (netif_msg_tx_queued(Adapter))
  81                 pr_info(PFX "%s: enqueueing packet to queue %d\n",
  82                         dev->name, qindex);
  83
  84         spin_lock(&Adapter->PackInfo[qindex].SFQueueLock);
  85         Adapter->PackInfo[qindex].uiCurrentBytesOnHost += skb->len;
  86         Adapter->PackInfo[qindex].uiCurrentPacketsOnHost++;
  87
  88         *((B_UINT32 *) skb->cb + SKB_CB_LATENCY_OFFSET) = jiffies;
  89         ENQUEUEPACKET(Adapter->PackInfo[qindex].FirstTxQueue,
  90                       Adapter->PackInfo[qindex].LastTxQueue, skb);
  91         atomic_inc(&Adapter->TotalPacketCount);
  92         spin_unlock(&Adapter->PackInfo[qindex].SFQueueLock);
  93
  94         /* FIXME - this is racy and incorrect, replace with work queue */
  95         if (!atomic_read(&Adapter->TxPktAvail)) {
  96                 atomic_set(&Adapter->TxPktAvail, 1);
  97                 wake_up(&Adapter->tx_packet_wait_queue);
  98         }
  99         return NETDEV_TX_OK;
 100
 101  drop:
 102         dev_kfree_skb(skb);
 103         return NETDEV_TX_OK;
 104 }
 105
 106
 107
 108 /**
 109 @ingroup init_functions
 110 Register other driver entry points with the kernel
 111 */
 112 static const struct net_device_ops bcmNetDevOps = {
 113         .ndo_open               = bcm_open,
 114         .ndo_stop               = bcm_close,
 115         .ndo_start_xmit         = bcm_transmit,
 116         .ndo_change_mtu         = eth_change_mtu,
 117         .ndo_set_mac_address    = eth_mac_addr,
 118         .ndo_validate_addr      = eth_validate_addr,
 119         .ndo_select_queue       = bcm_select_queue,
 120 };
 121
 122 static struct device_type wimax_type = {
 123         .name   = "wimax",
 124 };
 125
 126 static int bcm_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 127 {
 128         cmd->supported          = 0;
 129         cmd->advertising        = 0;
 130         cmd->speed              = SPEED_10000;
 131         cmd->duplex             = DUPLEX_FULL;
 132         cmd->port               = PORT_TP;
 133         cmd->phy_address        = 0;
 134         cmd->transceiver        = XCVR_INTERNAL;
 135         cmd->autoneg            = AUTONEG_DISABLE;
 136         cmd->maxtxpkt           = 0;
 137         cmd->maxrxpkt           = 0;
 138         return 0;
 139 }
 140
 141 static void bcm_get_drvinfo(struct net_device *dev,
 142                             struct ethtool_drvinfo *info)
 143 {
 144         struct bcm_mini_adapter *Adapter = GET_BCM_ADAPTER(dev);
 145         struct bcm_interface_adapter *psIntfAdapter = Adapter->pvInterfaceAdapter;
 146         struct usb_device *udev = interface_to_usbdev(psIntfAdapter->interface);
 147
 148         strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
 149         strlcpy(info->version, DRV_VERSION, sizeof(info->version));
 150         snprintf(info->fw_version, sizeof(info->fw_version), "%u.%u",
 151                  Adapter->uiFlashLayoutMajorVersion,
 152                  Adapter->uiFlashLayoutMinorVersion);
 153
 154         usb_make_path(udev, info->bus_info, sizeof(info->bus_info));
 155 }
 156
 157 static u32 bcm_get_link(struct net_device *dev)
 158 {
 159         struct bcm_mini_adapter *Adapter = GET_BCM_ADAPTER(dev);
 160
 161         return Adapter->LinkUpStatus;
 162 }
 163
 164 static u32 bcm_get_msglevel(struct net_device *dev)
 165 {
 166         struct bcm_mini_adapter *Adapter = GET_BCM_ADAPTER(dev);
 167
 168         return Adapter->msg_enable;
 169 }
 170
 171 static void bcm_set_msglevel(struct net_device *dev, u32 level)
 172 {
 173         struct bcm_mini_adapter *Adapter = GET_BCM_ADAPTER(dev);
 174
 175         Adapter->msg_enable = level;
 176 }
 177
 178 static const struct ethtool_ops bcm_ethtool_ops = {
 179         .get_settings   = bcm_get_settings,
 180         .get_drvinfo    = bcm_get_drvinfo,
 181         .get_link       = bcm_get_link,
 182         .get_msglevel   = bcm_get_msglevel,
 183         .set_msglevel   = bcm_set_msglevel,
 184 };
 185
 186 int register_networkdev(struct bcm_mini_adapter *Adapter)
 187 {
 188         struct net_device *net = Adapter->dev;
 189         struct bcm_interface_adapter *IntfAdapter = Adapter->pvInterfaceAdapter;
 190         struct usb_interface *udev = IntfAdapter->interface;
 191         struct usb_device *xdev = IntfAdapter->udev;
 192
 193         int result;
 194
 195         net->netdev_ops = &bcmNetDevOps;
 196         net->ethtool_ops = &bcm_ethtool_ops;
 197         net->mtu = MTU_SIZE;    /* 1400 Bytes */
 198         net->tx_queue_len = TX_QLEN;
 199         net->flags |= IFF_NOARP;
 200
 201         netif_carrier_off(net);
 202
 203         SET_NETDEV_DEVTYPE(net, &wimax_type);
 204
 205         /* Read the MAC Address from EEPROM */
 206         result = ReadMacAddressFromNVM(Adapter);
 207         if (result != STATUS_SUCCESS) {
 208                 dev_err(&udev->dev,
 209                         PFX "Error in Reading the mac Address: %d", result);
 210                 return -EIO;
 211         }
 212
 213         result = register_netdev(net);
 214         if (result)
 215                 return result;
 216
 217         gblpnetdev = Adapter->dev;
 218
 219         if (netif_msg_probe(Adapter))
 220                 dev_info(&udev->dev, PFX "%s: register usb-%s-%s %pM\n",
 221                          net->name, xdev->bus->bus_name, xdev->devpath,
 222                          net->dev_addr);
 223
 224         return 0;
 225 }
 226
 227 void unregister_networkdev(struct bcm_mini_adapter *Adapter)
 228 {
 229         struct net_device *net = Adapter->dev;
 230         struct bcm_interface_adapter *IntfAdapter = Adapter->pvInterfaceAdapter;
 231         struct usb_interface *udev = IntfAdapter->interface;
 232         struct usb_device *xdev = IntfAdapter->udev;
 233
 234         if (netif_msg_probe(Adapter))
 235                 dev_info(&udev->dev, PFX "%s: unregister usb-%s%s\n",
 236                          net->name, xdev->bus->bus_name, xdev->devpath);
 237
 238         unregister_netdev(Adapter->dev);
 239 }