diff options
Diffstat (limited to 'drivers/staging/sbe-2t3e3/netdev.c')
| -rw-r--r-- | drivers/staging/sbe-2t3e3/netdev.c | 142 |
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(¶m, data, len)) + return -EFAULT; + + t3e3_if_config(sc, cmd_2t3e3, (char *)¶m, &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; +} |