2 * SBE 2T3E3 synchronous serial card driver for Linux
4 * Copyright (C) 2009-2010 Krzysztof Halasa <khc@pm.waw.pl>
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of version 2 of the GNU General Public License
8 * as published by the Free Software Foundation.
10 * This code is based on a driver written by SBE Inc.
13 #include <linux/capability.h>
14 #include <linux/module.h>
15 #include <linux/slab.h>
16 #include <linux/delay.h>
17 #include <linux/netdevice.h>
18 #include <linux/pci.h>
19 #include <linux/hdlc.h>
20 #include <linux/if_arp.h>
21 #include <linux/interrupt.h>
24 static int t3e3_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
26 struct channel *sc = dev_to_priv(dev);
27 int cmd_2t3e3, len, rlen;
28 struct t3e3_param param;
30 void __user *data = ifr->ifr_data + sizeof(cmd_2t3e3) + sizeof(len);
32 if (cmd == SIOCWANDEV)
33 return hdlc_ioctl(dev, ifr, cmd);
34 if (!capable(CAP_SYS_ADMIN))
36 if (cmd != SIOCDEVPRIVATE + 15)
39 if (copy_from_user(&cmd_2t3e3, ifr->ifr_data, sizeof(cmd_2t3e3)))
41 if (copy_from_user(&len, ifr->ifr_data + sizeof(cmd_2t3e3), sizeof(len)))
44 if (len > sizeof(param))
48 if (copy_from_user(¶m, data, len))
51 t3e3_if_config(sc, cmd_2t3e3, (char *)¶m, &resp, &rlen);
54 if (copy_to_user(data, &resp, rlen))
60 static struct net_device_stats *t3e3_get_stats(struct net_device *dev)
62 struct net_device_stats *nstats = &dev->stats;
63 struct channel *sc = dev_to_priv(dev);
64 struct t3e3_stats *stats = &sc->s;
66 memset(nstats, 0, sizeof(struct net_device_stats));
67 nstats->rx_packets = stats->in_packets;
68 nstats->tx_packets = stats->out_packets;
69 nstats->rx_bytes = stats->in_bytes;
70 nstats->tx_bytes = stats->out_bytes;
72 nstats->rx_errors = stats->in_errors;
73 nstats->tx_errors = stats->out_errors;
74 nstats->rx_crc_errors = stats->in_error_crc;
77 nstats->rx_dropped = stats->in_dropped;
78 nstats->tx_dropped = stats->out_dropped;
79 nstats->tx_carrier_errors = stats->out_error_lost_carr +
80 stats->out_error_no_carr;
85 static int t3e3_open(struct net_device *dev)
87 struct channel *sc = dev_to_priv(dev);
88 int ret = hdlc_open(dev);
93 sc->r.flags |= SBE_2T3E3_FLAG_NETWORK_UP;
94 dc_start(dev_to_priv(dev));
95 netif_start_queue(dev);
96 try_module_get(THIS_MODULE);
100 static int t3e3_close(struct net_device *dev)
102 struct channel *sc = dev_to_priv(dev);
104 netif_stop_queue(dev);
106 sc->r.flags &= ~SBE_2T3E3_FLAG_NETWORK_UP;
107 module_put(THIS_MODULE);
111 static int t3e3_attach(struct net_device *dev, unsigned short foo1,
117 static const struct net_device_ops t3e3_ops = {
118 .ndo_open = t3e3_open,
119 .ndo_stop = t3e3_close,
120 .ndo_change_mtu = hdlc_change_mtu,
121 .ndo_start_xmit = hdlc_start_xmit,
122 .ndo_do_ioctl = t3e3_ioctl,
123 .ndo_get_stats = t3e3_get_stats,
126 int setup_device(struct net_device *dev, struct channel *sc)
128 hdlc_device *hdlc = dev_to_hdlc(dev);
131 dev->base_addr = pci_resource_start(sc->pdev, 0);
132 dev->irq = sc->pdev->irq;
133 dev->netdev_ops = &t3e3_ops;
134 dev->tx_queue_len = 100;
135 hdlc->xmit = t3e3_if_start_xmit;
136 hdlc->attach = t3e3_attach;
137 retval = register_hdlc_device(dev);
139 dev_err(&sc->pdev->dev, "error registering HDLC device\n");