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path: root/drivers/staging/usbip/stub_main.c
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Diffstat (limited to 'drivers/staging/usbip/stub_main.c')
-rw-r--r--drivers/staging/usbip/stub_main.c335
1 files changed, 0 insertions, 335 deletions
diff --git a/drivers/staging/usbip/stub_main.c b/drivers/staging/usbip/stub_main.c
deleted file mode 100644
index 44ab43fc4fcc..000000000000
--- a/drivers/staging/usbip/stub_main.c
+++ /dev/null
@@ -1,335 +0,0 @@
-/*
- * Copyright (C) 2003-2008 Takahiro Hirofuchi
- *
- * This is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
- * USA.
- */
-
-#include <linux/string.h>
-#include <linux/module.h>
-#include <linux/device.h>
-
-#include "usbip_common.h"
-#include "stub.h"
-
-#define DRIVER_AUTHOR "Takahiro Hirofuchi"
-#define DRIVER_DESC "USB/IP Host Driver"
-
-struct kmem_cache *stub_priv_cache;
-/*
- * busid_tables defines matching busids that usbip can grab. A user can change
- * dynamically what device is locally used and what device is exported to a
- * remote host.
- */
-#define MAX_BUSID 16
-static struct bus_id_priv busid_table[MAX_BUSID];
-static spinlock_t busid_table_lock;
-
-static void init_busid_table(void)
-{
- /*
- * This also sets the bus_table[i].status to
- * STUB_BUSID_OTHER, which is 0.
- */
- memset(busid_table, 0, sizeof(busid_table));
-
- spin_lock_init(&busid_table_lock);
-}
-
-/*
- * Find the index of the busid by name.
- * Must be called with busid_table_lock held.
- */
-static int get_busid_idx(const char *busid)
-{
- int i;
- int idx = -1;
-
- for (i = 0; i < MAX_BUSID; i++)
- if (busid_table[i].name[0])
- if (!strncmp(busid_table[i].name, busid, BUSID_SIZE)) {
- idx = i;
- break;
- }
- return idx;
-}
-
-struct bus_id_priv *get_busid_priv(const char *busid)
-{
- int idx;
- struct bus_id_priv *bid = NULL;
-
- spin_lock(&busid_table_lock);
- idx = get_busid_idx(busid);
- if (idx >= 0)
- bid = &(busid_table[idx]);
- spin_unlock(&busid_table_lock);
-
- return bid;
-}
-
-static int add_match_busid(char *busid)
-{
- int i;
- int ret = -1;
-
- spin_lock(&busid_table_lock);
- /* already registered? */
- if (get_busid_idx(busid) >= 0) {
- ret = 0;
- goto out;
- }
-
- for (i = 0; i < MAX_BUSID; i++)
- if (!busid_table[i].name[0]) {
- strlcpy(busid_table[i].name, busid, BUSID_SIZE);
- if ((busid_table[i].status != STUB_BUSID_ALLOC) &&
- (busid_table[i].status != STUB_BUSID_REMOV))
- busid_table[i].status = STUB_BUSID_ADDED;
- ret = 0;
- break;
- }
-
-out:
- spin_unlock(&busid_table_lock);
-
- return ret;
-}
-
-int del_match_busid(char *busid)
-{
- int idx;
- int ret = -1;
-
- spin_lock(&busid_table_lock);
- idx = get_busid_idx(busid);
- if (idx < 0)
- goto out;
-
- /* found */
- ret = 0;
-
- if (busid_table[idx].status == STUB_BUSID_OTHER)
- memset(busid_table[idx].name, 0, BUSID_SIZE);
-
- if ((busid_table[idx].status != STUB_BUSID_OTHER) &&
- (busid_table[idx].status != STUB_BUSID_ADDED))
- busid_table[idx].status = STUB_BUSID_REMOV;
-
-out:
- spin_unlock(&busid_table_lock);
-
- return ret;
-}
-
-static ssize_t show_match_busid(struct device_driver *drv, char *buf)
-{
- int i;
- char *out = buf;
-
- spin_lock(&busid_table_lock);
- for (i = 0; i < MAX_BUSID; i++)
- if (busid_table[i].name[0])
- out += sprintf(out, "%s ", busid_table[i].name);
- spin_unlock(&busid_table_lock);
- out += sprintf(out, "\n");
-
- return out - buf;
-}
-
-static ssize_t store_match_busid(struct device_driver *dev, const char *buf,
- size_t count)
-{
- int len;
- char busid[BUSID_SIZE];
-
- if (count < 5)
- return -EINVAL;
-
- /* busid needs to include \0 termination */
- len = strlcpy(busid, buf + 4, BUSID_SIZE);
- if (sizeof(busid) <= len)
- return -EINVAL;
-
- if (!strncmp(buf, "add ", 4)) {
- if (add_match_busid(busid) < 0)
- return -ENOMEM;
-
- pr_debug("add busid %s\n", busid);
- return count;
- }
-
- if (!strncmp(buf, "del ", 4)) {
- if (del_match_busid(busid) < 0)
- return -ENODEV;
-
- pr_debug("del busid %s\n", busid);
- return count;
- }
-
- return -EINVAL;
-}
-static DRIVER_ATTR(match_busid, S_IRUSR | S_IWUSR, show_match_busid,
- store_match_busid);
-
-static ssize_t rebind_store(struct device_driver *dev, const char *buf,
- size_t count)
-{
- int ret;
- int len;
- struct bus_id_priv *bid;
-
- /* buf length should be less that BUSID_SIZE */
- len = strnlen(buf, BUSID_SIZE);
-
- if (!(len < BUSID_SIZE))
- return -EINVAL;
-
- bid = get_busid_priv(buf);
- if (!bid)
- return -ENODEV;
-
- ret = device_attach(&bid->udev->dev);
- if (ret < 0) {
- dev_err(&bid->udev->dev, "rebind failed\n");
- return ret;
- }
-
- return count;
-}
-
-static DRIVER_ATTR_WO(rebind);
-
-static struct stub_priv *stub_priv_pop_from_listhead(struct list_head *listhead)
-{
- struct stub_priv *priv, *tmp;
-
- list_for_each_entry_safe(priv, tmp, listhead, list) {
- list_del(&priv->list);
- return priv;
- }
-
- return NULL;
-}
-
-static struct stub_priv *stub_priv_pop(struct stub_device *sdev)
-{
- unsigned long flags;
- struct stub_priv *priv;
-
- spin_lock_irqsave(&sdev->priv_lock, flags);
-
- priv = stub_priv_pop_from_listhead(&sdev->priv_init);
- if (priv)
- goto done;
-
- priv = stub_priv_pop_from_listhead(&sdev->priv_tx);
- if (priv)
- goto done;
-
- priv = stub_priv_pop_from_listhead(&sdev->priv_free);
-
-done:
- spin_unlock_irqrestore(&sdev->priv_lock, flags);
-
- return priv;
-}
-
-void stub_device_cleanup_urbs(struct stub_device *sdev)
-{
- struct stub_priv *priv;
- struct urb *urb;
-
- dev_dbg(&sdev->udev->dev, "free sdev %p\n", sdev);
-
- while ((priv = stub_priv_pop(sdev))) {
- urb = priv->urb;
- dev_dbg(&sdev->udev->dev, "free urb %p\n", urb);
- usb_kill_urb(urb);
-
- kmem_cache_free(stub_priv_cache, priv);
-
- kfree(urb->transfer_buffer);
- kfree(urb->setup_packet);
- usb_free_urb(urb);
- }
-}
-
-static int __init usbip_host_init(void)
-{
- int ret;
-
- init_busid_table();
-
- stub_priv_cache = KMEM_CACHE(stub_priv, SLAB_HWCACHE_ALIGN);
- if (!stub_priv_cache) {
- pr_err("kmem_cache_create failed\n");
- return -ENOMEM;
- }
-
- ret = usb_register_device_driver(&stub_driver, THIS_MODULE);
- if (ret) {
- pr_err("usb_register failed %d\n", ret);
- goto err_usb_register;
- }
-
- ret = driver_create_file(&stub_driver.drvwrap.driver,
- &driver_attr_match_busid);
- if (ret) {
- pr_err("driver_create_file failed\n");
- goto err_create_file;
- }
-
- ret = driver_create_file(&stub_driver.drvwrap.driver,
- &driver_attr_rebind);
- if (ret) {
- pr_err("driver_create_file failed\n");
- goto err_create_file;
- }
-
- pr_info(DRIVER_DESC " v" USBIP_VERSION "\n");
- return ret;
-
-err_create_file:
- usb_deregister_device_driver(&stub_driver);
-err_usb_register:
- kmem_cache_destroy(stub_priv_cache);
- return ret;
-}
-
-static void __exit usbip_host_exit(void)
-{
- driver_remove_file(&stub_driver.drvwrap.driver,
- &driver_attr_match_busid);
-
- driver_remove_file(&stub_driver.drvwrap.driver,
- &driver_attr_rebind);
-
- /*
- * deregister() calls stub_disconnect() for all devices. Device
- * specific data is cleared in stub_disconnect().
- */
- usb_deregister_device_driver(&stub_driver);
-
- kmem_cache_destroy(stub_priv_cache);
-}
-
-module_init(usbip_host_init);
-module_exit(usbip_host_exit);
-
-MODULE_AUTHOR(DRIVER_AUTHOR);
-MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_LICENSE("GPL");
-MODULE_VERSION(USBIP_VERSION);