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path: root/drivers/staging/sbe-2t3e3/netdev.c
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Diffstat (limited to 'drivers/staging/sbe-2t3e3/netdev.c')
-rw-r--r--drivers/staging/sbe-2t3e3/netdev.c142
1 files changed, 142 insertions, 0 deletions
diff --git a/drivers/staging/sbe-2t3e3/netdev.c b/drivers/staging/sbe-2t3e3/netdev.c
new file mode 100644
index 000000000000..c7b5e8bb04ff
--- /dev/null
+++ b/drivers/staging/sbe-2t3e3/netdev.c
@@ -0,0 +1,142 @@
+/*
+ * SBE 2T3E3 synchronous serial card driver for Linux
+ *
+ * Copyright (C) 2009-2010 Krzysztof Halasa <khc@pm.waw.pl>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License
+ * as published by the Free Software Foundation.
+ *
+ * This code is based on a driver written by SBE Inc.
+ */
+
+#include <linux/capability.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/netdevice.h>
+#include <linux/pci.h>
+#include <linux/hdlc.h>
+#include <linux/if_arp.h>
+#include <linux/interrupt.h>
+#include "2t3e3.h"
+
+int t3e3_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+{
+ struct channel *sc = dev_to_priv(dev);
+ int cmd_2t3e3, len, rlen;
+ t3e3_param_t param;
+ t3e3_resp_t resp;
+ void *data = ifr->ifr_data + sizeof(cmd_2t3e3) + sizeof(len);
+
+ if (cmd == SIOCWANDEV)
+ return hdlc_ioctl(dev, ifr, cmd);
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+ if (cmd != SIOCDEVPRIVATE + 15)
+ return -EINVAL;
+
+ if (copy_from_user(&cmd_2t3e3, ifr->ifr_data, sizeof(cmd_2t3e3)))
+ return -EFAULT;
+ if (copy_from_user(&len, ifr->ifr_data + sizeof(cmd_2t3e3), sizeof(len)))
+ return -EFAULT;
+
+ if (len > sizeof(param))
+ return -EFAULT;
+
+ if (len)
+ if (copy_from_user(&param, data, len))
+ return -EFAULT;
+
+ t3e3_if_config(sc, cmd_2t3e3, (char *)&param, &resp, &rlen);
+
+ if (rlen)
+ if (copy_to_user(data, &resp, rlen))
+ return -EFAULT;
+
+ return 0;
+}
+
+static struct net_device_stats* t3e3_get_stats(struct net_device *dev)
+{
+ struct net_device_stats *nstats = &dev->stats;
+ struct channel *sc = dev_to_priv(dev);
+ t3e3_stats_t *stats = &sc->s;
+
+ memset(nstats, 0, sizeof(struct net_device_stats));
+ nstats->rx_packets = stats->in_packets;
+ nstats->tx_packets = stats->out_packets;
+ nstats->rx_bytes = stats->in_bytes;
+ nstats->tx_bytes = stats->out_bytes;
+
+ nstats->rx_errors = stats->in_errors;
+ nstats->tx_errors = stats->out_errors;
+ nstats->rx_crc_errors = stats->in_error_crc;
+
+
+ nstats->rx_dropped = stats->in_dropped;
+ nstats->tx_dropped = stats->out_dropped;
+ nstats->tx_carrier_errors = stats->out_error_lost_carr +
+ stats->out_error_no_carr;
+
+ return nstats;
+}
+
+int t3e3_open(struct net_device *dev)
+{
+ struct channel *sc = dev_to_priv(dev);
+ int ret = hdlc_open(dev);
+
+ if (ret)
+ return ret;
+
+ sc->r.flags |= SBE_2T3E3_FLAG_NETWORK_UP;
+ dc_start(dev_to_priv(dev));
+ netif_start_queue(dev);
+ try_module_get(THIS_MODULE);
+ return 0;
+}
+
+int t3e3_close(struct net_device *dev)
+{
+ struct channel *sc = dev_to_priv(dev);
+ hdlc_close(dev);
+ netif_stop_queue(dev);
+ dc_stop(sc);
+ sc->r.flags &= ~SBE_2T3E3_FLAG_NETWORK_UP;
+ module_put(THIS_MODULE);
+ return 0;
+}
+
+static int t3e3_attach(struct net_device *dev, unsigned short foo1,
+ unsigned short foo2)
+{
+ return 0;
+}
+
+static const struct net_device_ops t3e3_ops = {
+ .ndo_open = t3e3_open,
+ .ndo_stop = t3e3_close,
+ .ndo_change_mtu = hdlc_change_mtu,
+ .ndo_start_xmit = hdlc_start_xmit,
+ .ndo_do_ioctl = t3e3_ioctl,
+ .ndo_get_stats = t3e3_get_stats,
+};
+
+int setup_device(struct net_device *dev, struct channel *sc)
+{
+ hdlc_device *hdlc = dev_to_hdlc(dev);
+ int retval;
+
+ dev->base_addr = pci_resource_start(sc->pdev, 0);
+ dev->irq = sc->pdev->irq;
+ dev->netdev_ops = &t3e3_ops;
+ dev->tx_queue_len = 100;
+ hdlc->xmit = t3e3_if_start_xmit;
+ hdlc->attach = t3e3_attach;
+ if ((retval = register_hdlc_device(dev))) {
+ dev_err(&sc->pdev->dev, "error registering HDLC device\n");
+ return retval;
+ }
+ return 0;
+}