/** Stops the virtual network device. * * \return Always zero (success). */ int ec_dbgdev_stop( struct net_device *dev /**< debug net_device */ ) { ec_debug_t *dbg = *((ec_debug_t **) netdev_priv(dev)); dbg->opened = 0; EC_MASTER_INFO(dbg->device->master, "Debug interface %s stopped.\n", dev->name); return 0; }
/** Clear an RTDM device. */ void ec_rtdm_dev_clear( ec_rtdm_dev_t *rtdm_dev /**< EtherCAT RTDM device. */ ) { int ret; EC_MASTER_INFO(rtdm_dev->master, "Unregistering RTDM device %s.\n", rtdm_dev->dev->driver_name); ret = rtdm_dev_unregister(rtdm_dev->dev, 1000 /* poll delay [ms] */); if (ret < 0) { EC_MASTER_WARN(rtdm_dev->master, "Failed to unregister RTDM device (code %i).\n", ret); } kfree(rtdm_dev->dev); }
/** Driver ioctl. * * \return ioctl() return code. */ int ec_rtdm_ioctl( struct rtdm_dev_context *context, /**< Context. */ rtdm_user_info_t *user_info, /**< User data. */ unsigned int request, /**< Request. */ void __user *arg /**< Argument. */ ) { ec_rtdm_context_t *ctx = (ec_rtdm_context_t *) context->dev_private; ec_rtdm_dev_t *rtdm_dev = (ec_rtdm_dev_t *) context->device->device_data; #if DEBUG EC_MASTER_INFO(rtdm_dev->master, "ioctl(request = %u, ctl = %02x)" " on RTDM device %s.\n", request, _IOC_NR(request), context->device->device_name); #endif return ec_ioctl_rtdm(rtdm_dev->master, &ctx->ioctl_ctx, request, arg); }
/** Driver close. * * \return Always zero (success). */ int ec_rtdm_close( struct rtdm_dev_context *context, /**< Context. */ rtdm_user_info_t *user_info /**< User data. */ ) { ec_rtdm_context_t *ctx = (ec_rtdm_context_t *) context->dev_private; ec_rtdm_dev_t *rtdm_dev = (ec_rtdm_dev_t *) context->device->device_data; if (ctx->ioctl_ctx.requested) { ecrt_release_master(rtdm_dev->master); } #if DEBUG EC_MASTER_INFO(rtdm_dev->master, "RTDM device %s closed.\n", context->device->device_name); #endif return 0; }
/** Initialize an RTDM device. * * \return Zero on success, otherwise a negative error code. */ int ec_rtdm_dev_init( ec_rtdm_dev_t *rtdm_dev, /**< EtherCAT RTDM device. */ ec_master_t *master /**< EtherCAT master. */ ) { int ret; rtdm_dev->master = master; rtdm_dev->dev = kzalloc(sizeof(struct rtdm_device), GFP_KERNEL); if (!rtdm_dev->dev) { EC_MASTER_ERR(master, "Failed to reserve memory for RTDM device.\n"); return -ENOMEM; } rtdm_dev->dev->struct_version = RTDM_DEVICE_STRUCT_VER; rtdm_dev->dev->device_flags = RTDM_NAMED_DEVICE; rtdm_dev->dev->context_size = sizeof(ec_rtdm_context_t); snprintf(rtdm_dev->dev->device_name, RTDM_MAX_DEVNAME_LEN, "EtherCAT%u", master->index); rtdm_dev->dev->open_nrt = ec_rtdm_open; rtdm_dev->dev->ops.close_nrt = ec_rtdm_close; rtdm_dev->dev->ops.ioctl_rt = ec_rtdm_ioctl; rtdm_dev->dev->ops.ioctl_nrt = ec_rtdm_ioctl; rtdm_dev->dev->device_class = RTDM_CLASS_EXPERIMENTAL; rtdm_dev->dev->device_sub_class = 222; rtdm_dev->dev->driver_name = "EtherCAT"; rtdm_dev->dev->driver_version = RTDM_DRIVER_VER(1, 0, 2); rtdm_dev->dev->peripheral_name = rtdm_dev->dev->device_name; rtdm_dev->dev->provider_name = "EtherLab Community"; rtdm_dev->dev->proc_name = rtdm_dev->dev->device_name; rtdm_dev->dev->device_data = rtdm_dev; /* pointer to parent */ EC_MASTER_INFO(master, "Registering RTDM device %s.\n", rtdm_dev->dev->driver_name); ret = rtdm_dev_register(rtdm_dev->dev); if (ret) { EC_MASTER_ERR(master, "Initialization of RTDM interface failed" " (return value %i).\n", ret); kfree(rtdm_dev->dev); } return ret; }
/** Driver open. * * \return Always zero (success). */ int ec_rtdm_open( struct rtdm_dev_context *context, /**< Context. */ rtdm_user_info_t *user_info, /**< User data. */ int oflags /**< Open flags. */ ) { ec_rtdm_context_t *ctx = (ec_rtdm_context_t *) context->dev_private; #if DEBUG ec_rtdm_dev_t *rtdm_dev = (ec_rtdm_dev_t *) context->device->device_data; #endif ctx->user_info = user_info; ctx->ioctl_ctx.writable = oflags & O_WRONLY || oflags & O_RDWR; ctx->ioctl_ctx.requested = 0; ctx->ioctl_ctx.process_data = NULL; ctx->ioctl_ctx.process_data_size = 0; #if DEBUG EC_MASTER_INFO(rtdm_dev->master, "RTDM device %s opened.\n", context->device->device_name); #endif return 0; }