| /* |
| * Generic gameport layer |
| * |
| * Copyright (c) 1999-2002 Vojtech Pavlik |
| * Copyright (c) 2005 Dmitry Torokhov |
| */ |
| |
| /* |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 as published by |
| * the Free Software Foundation. |
| */ |
| |
| #include <linux/stddef.h> |
| #include <linux/module.h> |
| #include <linux/ioport.h> |
| #include <linux/init.h> |
| #include <linux/gameport.h> |
| #include <linux/wait.h> |
| #include <linux/sched.h> |
| #include <linux/slab.h> |
| #include <linux/delay.h> |
| #include <linux/kthread.h> |
| #include <linux/sched.h> /* HZ */ |
| |
| /*#include <asm/io.h>*/ |
| |
| MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); |
| MODULE_DESCRIPTION("Generic gameport layer"); |
| MODULE_LICENSE("GPL"); |
| |
| EXPORT_SYMBOL(__gameport_register_port); |
| EXPORT_SYMBOL(gameport_unregister_port); |
| EXPORT_SYMBOL(__gameport_register_driver); |
| EXPORT_SYMBOL(gameport_unregister_driver); |
| EXPORT_SYMBOL(gameport_open); |
| EXPORT_SYMBOL(gameport_close); |
| EXPORT_SYMBOL(gameport_rescan); |
| EXPORT_SYMBOL(gameport_cooked_read); |
| EXPORT_SYMBOL(gameport_set_name); |
| EXPORT_SYMBOL(gameport_set_phys); |
| EXPORT_SYMBOL(gameport_start_polling); |
| EXPORT_SYMBOL(gameport_stop_polling); |
| |
| /* |
| * gameport_sem protects entire gameport subsystem and is taken |
| * every time gameport port or driver registrered or unregistered. |
| */ |
| static DECLARE_MUTEX(gameport_sem); |
| |
| static LIST_HEAD(gameport_list); |
| |
| static struct bus_type gameport_bus = { |
| .name = "gameport", |
| }; |
| |
| static void gameport_add_port(struct gameport *gameport); |
| static void gameport_destroy_port(struct gameport *gameport); |
| static void gameport_reconnect_port(struct gameport *gameport); |
| static void gameport_disconnect_port(struct gameport *gameport); |
| |
| #if defined(__i386__) |
| |
| #include <asm/i8253.h> |
| |
| #define DELTA(x,y) ((y)-(x)+((y)<(x)?1193182/HZ:0)) |
| #define GET_TIME(x) do { x = get_time_pit(); } while (0) |
| |
| static unsigned int get_time_pit(void) |
| { |
| unsigned long flags; |
| unsigned int count; |
| |
| spin_lock_irqsave(&i8253_lock, flags); |
| outb_p(0x00, 0x43); |
| count = inb_p(0x40); |
| count |= inb_p(0x40) << 8; |
| spin_unlock_irqrestore(&i8253_lock, flags); |
| |
| return count; |
| } |
| |
| #endif |
| |
| |
| |
| /* |
| * gameport_measure_speed() measures the gameport i/o speed. |
| */ |
| |
| static int gameport_measure_speed(struct gameport *gameport) |
| { |
| #if defined(__i386__) |
| |
| unsigned int i, t, t1, t2, t3, tx; |
| unsigned long flags; |
| |
| if (gameport_open(gameport, NULL, GAMEPORT_MODE_RAW)) |
| return 0; |
| |
| tx = 1 << 30; |
| |
| for(i = 0; i < 50; i++) { |
| local_irq_save(flags); |
| GET_TIME(t1); |
| for (t = 0; t < 50; t++) gameport_read(gameport); |
| GET_TIME(t2); |
| GET_TIME(t3); |
| local_irq_restore(flags); |
| udelay(i * 10); |
| if ((t = DELTA(t2,t1) - DELTA(t3,t2)) < tx) tx = t; |
| } |
| |
| gameport_close(gameport); |
| return 59659 / (tx < 1 ? 1 : tx); |
| |
| #elif defined (__x86_64__) |
| |
| unsigned int i, t; |
| unsigned long tx, t1, t2, flags; |
| |
| if (gameport_open(gameport, NULL, GAMEPORT_MODE_RAW)) |
| return 0; |
| |
| tx = 1 << 30; |
| |
| for(i = 0; i < 50; i++) { |
| local_irq_save(flags); |
| rdtscl(t1); |
| for (t = 0; t < 50; t++) gameport_read(gameport); |
| rdtscl(t2); |
| local_irq_restore(flags); |
| udelay(i * 10); |
| if (t2 - t1 < tx) tx = t2 - t1; |
| } |
| |
| gameport_close(gameport); |
| return (cpu_data[raw_smp_processor_id()].loops_per_jiffy * (unsigned long)HZ / (1000 / 50)) / (tx < 1 ? 1 : tx); |
| |
| #else |
| |
| unsigned int j, t = 0; |
| |
| if (gameport_open(gameport, NULL, GAMEPORT_MODE_RAW)) |
| return 0; |
| |
| j = jiffies; while (j == jiffies); |
| j = jiffies; while (j == jiffies) { t++; gameport_read(gameport); } |
| |
| gameport_close(gameport); |
| return t * HZ / 1000; |
| |
| #endif |
| } |
| |
| void gameport_start_polling(struct gameport *gameport) |
| { |
| spin_lock(&gameport->timer_lock); |
| |
| if (!gameport->poll_cnt++) { |
| BUG_ON(!gameport->poll_handler); |
| BUG_ON(!gameport->poll_interval); |
| mod_timer(&gameport->poll_timer, jiffies + msecs_to_jiffies(gameport->poll_interval)); |
| } |
| |
| spin_unlock(&gameport->timer_lock); |
| } |
| |
| void gameport_stop_polling(struct gameport *gameport) |
| { |
| spin_lock(&gameport->timer_lock); |
| |
| if (!--gameport->poll_cnt) |
| del_timer(&gameport->poll_timer); |
| |
| spin_unlock(&gameport->timer_lock); |
| } |
| |
| static void gameport_run_poll_handler(unsigned long d) |
| { |
| struct gameport *gameport = (struct gameport *)d; |
| |
| gameport->poll_handler(gameport); |
| if (gameport->poll_cnt) |
| mod_timer(&gameport->poll_timer, jiffies + msecs_to_jiffies(gameport->poll_interval)); |
| } |
| |
| /* |
| * Basic gameport -> driver core mappings |
| */ |
| |
| static void gameport_bind_driver(struct gameport *gameport, struct gameport_driver *drv) |
| { |
| down_write(&gameport_bus.subsys.rwsem); |
| |
| gameport->dev.driver = &drv->driver; |
| if (drv->connect(gameport, drv)) { |
| gameport->dev.driver = NULL; |
| goto out; |
| } |
| device_bind_driver(&gameport->dev); |
| out: |
| up_write(&gameport_bus.subsys.rwsem); |
| } |
| |
| static void gameport_release_driver(struct gameport *gameport) |
| { |
| down_write(&gameport_bus.subsys.rwsem); |
| device_release_driver(&gameport->dev); |
| up_write(&gameport_bus.subsys.rwsem); |
| } |
| |
| static void gameport_find_driver(struct gameport *gameport) |
| { |
| down_write(&gameport_bus.subsys.rwsem); |
| device_attach(&gameport->dev); |
| up_write(&gameport_bus.subsys.rwsem); |
| } |
| |
| |
| /* |
| * Gameport event processing. |
| */ |
| |
| enum gameport_event_type { |
| GAMEPORT_RESCAN, |
| GAMEPORT_RECONNECT, |
| GAMEPORT_REGISTER_PORT, |
| GAMEPORT_REGISTER_DRIVER, |
| }; |
| |
| struct gameport_event { |
| enum gameport_event_type type; |
| void *object; |
| struct module *owner; |
| struct list_head node; |
| }; |
| |
| static DEFINE_SPINLOCK(gameport_event_lock); /* protects gameport_event_list */ |
| static LIST_HEAD(gameport_event_list); |
| static DECLARE_WAIT_QUEUE_HEAD(gameport_wait); |
| static struct task_struct *gameport_task; |
| |
| static void gameport_queue_event(void *object, struct module *owner, |
| enum gameport_event_type event_type) |
| { |
| unsigned long flags; |
| struct gameport_event *event; |
| |
| spin_lock_irqsave(&gameport_event_lock, flags); |
| |
| /* |
| * Scan event list for the other events for the same gameport port, |
| * starting with the most recent one. If event is the same we |
| * do not need add new one. If event is of different type we |
| * need to add this event and should not look further because |
| * we need to preseve sequence of distinct events. |
| */ |
| list_for_each_entry_reverse(event, &gameport_event_list, node) { |
| if (event->object == object) { |
| if (event->type == event_type) |
| goto out; |
| break; |
| } |
| } |
| |
| if ((event = kmalloc(sizeof(struct gameport_event), GFP_ATOMIC))) { |
| if (!try_module_get(owner)) { |
| printk(KERN_WARNING "gameport: Can't get module reference, dropping event %d\n", event_type); |
| goto out; |
| } |
| |
| event->type = event_type; |
| event->object = object; |
| event->owner = owner; |
| |
| list_add_tail(&event->node, &gameport_event_list); |
| wake_up(&gameport_wait); |
| } else { |
| printk(KERN_ERR "gameport: Not enough memory to queue event %d\n", event_type); |
| } |
| out: |
| spin_unlock_irqrestore(&gameport_event_lock, flags); |
| } |
| |
| static void gameport_free_event(struct gameport_event *event) |
| { |
| module_put(event->owner); |
| kfree(event); |
| } |
| |
| static void gameport_remove_duplicate_events(struct gameport_event *event) |
| { |
| struct list_head *node, *next; |
| struct gameport_event *e; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&gameport_event_lock, flags); |
| |
| list_for_each_safe(node, next, &gameport_event_list) { |
| e = list_entry(node, struct gameport_event, node); |
| if (event->object == e->object) { |
| /* |
| * If this event is of different type we should not |
| * look further - we only suppress duplicate events |
| * that were sent back-to-back. |
| */ |
| if (event->type != e->type) |
| break; |
| |
| list_del_init(node); |
| gameport_free_event(e); |
| } |
| } |
| |
| spin_unlock_irqrestore(&gameport_event_lock, flags); |
| } |
| |
| |
| static struct gameport_event *gameport_get_event(void) |
| { |
| struct gameport_event *event; |
| struct list_head *node; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&gameport_event_lock, flags); |
| |
| if (list_empty(&gameport_event_list)) { |
| spin_unlock_irqrestore(&gameport_event_lock, flags); |
| return NULL; |
| } |
| |
| node = gameport_event_list.next; |
| event = list_entry(node, struct gameport_event, node); |
| list_del_init(node); |
| |
| spin_unlock_irqrestore(&gameport_event_lock, flags); |
| |
| return event; |
| } |
| |
| static void gameport_handle_events(void) |
| { |
| struct gameport_event *event; |
| struct gameport_driver *gameport_drv; |
| |
| down(&gameport_sem); |
| |
| while ((event = gameport_get_event())) { |
| |
| switch (event->type) { |
| case GAMEPORT_REGISTER_PORT: |
| gameport_add_port(event->object); |
| break; |
| |
| case GAMEPORT_RECONNECT: |
| gameport_reconnect_port(event->object); |
| break; |
| |
| case GAMEPORT_RESCAN: |
| gameport_disconnect_port(event->object); |
| gameport_find_driver(event->object); |
| break; |
| |
| case GAMEPORT_REGISTER_DRIVER: |
| gameport_drv = event->object; |
| driver_register(&gameport_drv->driver); |
| break; |
| |
| default: |
| break; |
| } |
| |
| gameport_remove_duplicate_events(event); |
| gameport_free_event(event); |
| } |
| |
| up(&gameport_sem); |
| } |
| |
| /* |
| * Remove all events that have been submitted for a given gameport port. |
| */ |
| static void gameport_remove_pending_events(struct gameport *gameport) |
| { |
| struct list_head *node, *next; |
| struct gameport_event *event; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&gameport_event_lock, flags); |
| |
| list_for_each_safe(node, next, &gameport_event_list) { |
| event = list_entry(node, struct gameport_event, node); |
| if (event->object == gameport) { |
| list_del_init(node); |
| gameport_free_event(event); |
| } |
| } |
| |
| spin_unlock_irqrestore(&gameport_event_lock, flags); |
| } |
| |
| /* |
| * Destroy child gameport port (if any) that has not been fully registered yet. |
| * |
| * Note that we rely on the fact that port can have only one child and therefore |
| * only one child registration request can be pending. Additionally, children |
| * are registered by driver's connect() handler so there can't be a grandchild |
| * pending registration together with a child. |
| */ |
| static struct gameport *gameport_get_pending_child(struct gameport *parent) |
| { |
| struct gameport_event *event; |
| struct gameport *gameport, *child = NULL; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&gameport_event_lock, flags); |
| |
| list_for_each_entry(event, &gameport_event_list, node) { |
| if (event->type == GAMEPORT_REGISTER_PORT) { |
| gameport = event->object; |
| if (gameport->parent == parent) { |
| child = gameport; |
| break; |
| } |
| } |
| } |
| |
| spin_unlock_irqrestore(&gameport_event_lock, flags); |
| return child; |
| } |
| |
| static int gameport_thread(void *nothing) |
| { |
| do { |
| gameport_handle_events(); |
| wait_event_interruptible(gameport_wait, |
| kthread_should_stop() || !list_empty(&gameport_event_list)); |
| try_to_freeze(); |
| } while (!kthread_should_stop()); |
| |
| printk(KERN_DEBUG "gameport: kgameportd exiting\n"); |
| return 0; |
| } |
| |
| |
| /* |
| * Gameport port operations |
| */ |
| |
| static ssize_t gameport_show_description(struct device *dev, struct device_attribute *attr, char *buf) |
| { |
| struct gameport *gameport = to_gameport_port(dev); |
| return sprintf(buf, "%s\n", gameport->name); |
| } |
| |
| static ssize_t gameport_rebind_driver(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
| { |
| struct gameport *gameport = to_gameport_port(dev); |
| struct device_driver *drv; |
| int retval; |
| |
| retval = down_interruptible(&gameport_sem); |
| if (retval) |
| return retval; |
| |
| retval = count; |
| if (!strncmp(buf, "none", count)) { |
| gameport_disconnect_port(gameport); |
| } else if (!strncmp(buf, "reconnect", count)) { |
| gameport_reconnect_port(gameport); |
| } else if (!strncmp(buf, "rescan", count)) { |
| gameport_disconnect_port(gameport); |
| gameport_find_driver(gameport); |
| } else if ((drv = driver_find(buf, &gameport_bus)) != NULL) { |
| gameport_disconnect_port(gameport); |
| gameport_bind_driver(gameport, to_gameport_driver(drv)); |
| put_driver(drv); |
| } else { |
| retval = -EINVAL; |
| } |
| |
| up(&gameport_sem); |
| |
| return retval; |
| } |
| |
| static struct device_attribute gameport_device_attrs[] = { |
| __ATTR(description, S_IRUGO, gameport_show_description, NULL), |
| __ATTR(drvctl, S_IWUSR, NULL, gameport_rebind_driver), |
| __ATTR_NULL |
| }; |
| |
| static void gameport_release_port(struct device *dev) |
| { |
| struct gameport *gameport = to_gameport_port(dev); |
| |
| kfree(gameport); |
| module_put(THIS_MODULE); |
| } |
| |
| void gameport_set_phys(struct gameport *gameport, const char *fmt, ...) |
| { |
| va_list args; |
| |
| va_start(args, fmt); |
| vsnprintf(gameport->phys, sizeof(gameport->phys), fmt, args); |
| va_end(args); |
| } |
| |
| /* |
| * Prepare gameport port for registration. |
| */ |
| static void gameport_init_port(struct gameport *gameport) |
| { |
| static atomic_t gameport_no = ATOMIC_INIT(0); |
| |
| __module_get(THIS_MODULE); |
| |
| init_MUTEX(&gameport->drv_sem); |
| device_initialize(&gameport->dev); |
| snprintf(gameport->dev.bus_id, sizeof(gameport->dev.bus_id), |
| "gameport%lu", (unsigned long)atomic_inc_return(&gameport_no) - 1); |
| gameport->dev.bus = &gameport_bus; |
| gameport->dev.release = gameport_release_port; |
| if (gameport->parent) |
| gameport->dev.parent = &gameport->parent->dev; |
| |
| spin_lock_init(&gameport->timer_lock); |
| init_timer(&gameport->poll_timer); |
| gameport->poll_timer.function = gameport_run_poll_handler; |
| gameport->poll_timer.data = (unsigned long)gameport; |
| } |
| |
| /* |
| * Complete gameport port registration. |
| * Driver core will attempt to find appropriate driver for the port. |
| */ |
| static void gameport_add_port(struct gameport *gameport) |
| { |
| if (gameport->parent) |
| gameport->parent->child = gameport; |
| |
| gameport->speed = gameport_measure_speed(gameport); |
| |
| list_add_tail(&gameport->node, &gameport_list); |
| |
| if (gameport->io) |
| printk(KERN_INFO "gameport: %s is %s, io %#x, speed %dkHz\n", |
| gameport->name, gameport->phys, gameport->io, gameport->speed); |
| else |
| printk(KERN_INFO "gameport: %s is %s, speed %dkHz\n", |
| gameport->name, gameport->phys, gameport->speed); |
| |
| device_add(&gameport->dev); |
| gameport->registered = 1; |
| } |
| |
| /* |
| * gameport_destroy_port() completes deregistration process and removes |
| * port from the system |
| */ |
| static void gameport_destroy_port(struct gameport *gameport) |
| { |
| struct gameport *child; |
| |
| child = gameport_get_pending_child(gameport); |
| if (child) { |
| gameport_remove_pending_events(child); |
| put_device(&child->dev); |
| } |
| |
| if (gameport->parent) { |
| gameport->parent->child = NULL; |
| gameport->parent = NULL; |
| } |
| |
| if (gameport->registered) { |
| device_del(&gameport->dev); |
| list_del_init(&gameport->node); |
| gameport->registered = 0; |
| } |
| |
| gameport_remove_pending_events(gameport); |
| put_device(&gameport->dev); |
| } |
| |
| /* |
| * Reconnect gameport port and all its children (re-initialize attached devices) |
| */ |
| static void gameport_reconnect_port(struct gameport *gameport) |
| { |
| do { |
| if (!gameport->drv || !gameport->drv->reconnect || gameport->drv->reconnect(gameport)) { |
| gameport_disconnect_port(gameport); |
| gameport_find_driver(gameport); |
| /* Ok, old children are now gone, we are done */ |
| break; |
| } |
| gameport = gameport->child; |
| } while (gameport); |
| } |
| |
| /* |
| * gameport_disconnect_port() unbinds a port from its driver. As a side effect |
| * all child ports are unbound and destroyed. |
| */ |
| static void gameport_disconnect_port(struct gameport *gameport) |
| { |
| struct gameport *s, *parent; |
| |
| if (gameport->child) { |
| /* |
| * Children ports should be disconnected and destroyed |
| * first, staring with the leaf one, since we don't want |
| * to do recursion |
| */ |
| for (s = gameport; s->child; s = s->child) |
| /* empty */; |
| |
| do { |
| parent = s->parent; |
| |
| gameport_release_driver(s); |
| gameport_destroy_port(s); |
| } while ((s = parent) != gameport); |
| } |
| |
| /* |
| * Ok, no children left, now disconnect this port |
| */ |
| gameport_release_driver(gameport); |
| } |
| |
| void gameport_rescan(struct gameport *gameport) |
| { |
| gameport_queue_event(gameport, NULL, GAMEPORT_RESCAN); |
| } |
| |
| void gameport_reconnect(struct gameport *gameport) |
| { |
| gameport_queue_event(gameport, NULL, GAMEPORT_RECONNECT); |
| } |
| |
| /* |
| * Submits register request to kgameportd for subsequent execution. |
| * Note that port registration is always asynchronous. |
| */ |
| void __gameport_register_port(struct gameport *gameport, struct module *owner) |
| { |
| gameport_init_port(gameport); |
| gameport_queue_event(gameport, owner, GAMEPORT_REGISTER_PORT); |
| } |
| |
| /* |
| * Synchronously unregisters gameport port. |
| */ |
| void gameport_unregister_port(struct gameport *gameport) |
| { |
| down(&gameport_sem); |
| gameport_disconnect_port(gameport); |
| gameport_destroy_port(gameport); |
| up(&gameport_sem); |
| } |
| |
| |
| /* |
| * Gameport driver operations |
| */ |
| |
| static ssize_t gameport_driver_show_description(struct device_driver *drv, char *buf) |
| { |
| struct gameport_driver *driver = to_gameport_driver(drv); |
| return sprintf(buf, "%s\n", driver->description ? driver->description : "(none)"); |
| } |
| |
| static struct driver_attribute gameport_driver_attrs[] = { |
| __ATTR(description, S_IRUGO, gameport_driver_show_description, NULL), |
| __ATTR_NULL |
| }; |
| |
| static int gameport_driver_probe(struct device *dev) |
| { |
| struct gameport *gameport = to_gameport_port(dev); |
| struct gameport_driver *drv = to_gameport_driver(dev->driver); |
| |
| drv->connect(gameport, drv); |
| return gameport->drv ? 0 : -ENODEV; |
| } |
| |
| static int gameport_driver_remove(struct device *dev) |
| { |
| struct gameport *gameport = to_gameport_port(dev); |
| struct gameport_driver *drv = to_gameport_driver(dev->driver); |
| |
| drv->disconnect(gameport); |
| return 0; |
| } |
| |
| void __gameport_register_driver(struct gameport_driver *drv, struct module *owner) |
| { |
| drv->driver.bus = &gameport_bus; |
| drv->driver.probe = gameport_driver_probe; |
| drv->driver.remove = gameport_driver_remove; |
| gameport_queue_event(drv, owner, GAMEPORT_REGISTER_DRIVER); |
| } |
| |
| void gameport_unregister_driver(struct gameport_driver *drv) |
| { |
| struct gameport *gameport; |
| |
| down(&gameport_sem); |
| drv->ignore = 1; /* so gameport_find_driver ignores it */ |
| |
| start_over: |
| list_for_each_entry(gameport, &gameport_list, node) { |
| if (gameport->drv == drv) { |
| gameport_disconnect_port(gameport); |
| gameport_find_driver(gameport); |
| /* we could've deleted some ports, restart */ |
| goto start_over; |
| } |
| } |
| |
| driver_unregister(&drv->driver); |
| up(&gameport_sem); |
| } |
| |
| static int gameport_bus_match(struct device *dev, struct device_driver *drv) |
| { |
| struct gameport_driver *gameport_drv = to_gameport_driver(drv); |
| |
| return !gameport_drv->ignore; |
| } |
| |
| static void gameport_set_drv(struct gameport *gameport, struct gameport_driver *drv) |
| { |
| down(&gameport->drv_sem); |
| gameport->drv = drv; |
| up(&gameport->drv_sem); |
| } |
| |
| int gameport_open(struct gameport *gameport, struct gameport_driver *drv, int mode) |
| { |
| |
| if (gameport->open) { |
| if (gameport->open(gameport, mode)) { |
| return -1; |
| } |
| } else { |
| if (mode != GAMEPORT_MODE_RAW) |
| return -1; |
| } |
| |
| gameport_set_drv(gameport, drv); |
| return 0; |
| } |
| |
| void gameport_close(struct gameport *gameport) |
| { |
| del_timer_sync(&gameport->poll_timer); |
| gameport->poll_handler = NULL; |
| gameport->poll_interval = 0; |
| gameport_set_drv(gameport, NULL); |
| if (gameport->close) |
| gameport->close(gameport); |
| } |
| |
| static int __init gameport_init(void) |
| { |
| gameport_task = kthread_run(gameport_thread, NULL, "kgameportd"); |
| if (IS_ERR(gameport_task)) { |
| printk(KERN_ERR "gameport: Failed to start kgameportd\n"); |
| return PTR_ERR(gameport_task); |
| } |
| |
| gameport_bus.dev_attrs = gameport_device_attrs; |
| gameport_bus.drv_attrs = gameport_driver_attrs; |
| gameport_bus.match = gameport_bus_match; |
| bus_register(&gameport_bus); |
| |
| return 0; |
| } |
| |
| static void __exit gameport_exit(void) |
| { |
| bus_unregister(&gameport_bus); |
| kthread_stop(gameport_task); |
| } |
| |
| module_init(gameport_init); |
| module_exit(gameport_exit); |