diff options
Diffstat (limited to 'drivers/usb/usbip/stub.h')
| -rw-r--r-- | drivers/usb/usbip/stub.h | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/drivers/usb/usbip/stub.h b/drivers/usb/usbip/stub.h new file mode 100644 index 000000000000..266e2b0ce9a8 --- /dev/null +++ b/drivers/usb/usbip/stub.h @@ -0,0 +1,113 @@ +/* + * 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. + */ + +#ifndef __USBIP_STUB_H +#define __USBIP_STUB_H + +#include <linux/list.h> +#include <linux/slab.h> +#include <linux/spinlock.h> +#include <linux/types.h> +#include <linux/usb.h> +#include <linux/wait.h> + +#define STUB_BUSID_OTHER 0 +#define STUB_BUSID_REMOV 1 +#define STUB_BUSID_ADDED 2 +#define STUB_BUSID_ALLOC 3 + +struct stub_device { + struct usb_interface *interface; + struct usb_device *udev; + + struct usbip_device ud; + __u32 devid; + + /* + * stub_priv preserves private data of each urb. + * It is allocated as stub_priv_cache and assigned to urb->context. + * + * stub_priv is always linked to any one of 3 lists; + * priv_init: linked to this until the comletion of a urb. + * priv_tx : linked to this after the completion of a urb. + * priv_free: linked to this after the sending of the result. + * + * Any of these list operations should be locked by priv_lock. + */ + spinlock_t priv_lock; + struct list_head priv_init; + struct list_head priv_tx; + struct list_head priv_free; + + /* see comments for unlinking in stub_rx.c */ + struct list_head unlink_tx; + struct list_head unlink_free; + + wait_queue_head_t tx_waitq; +}; + +/* private data into urb->priv */ +struct stub_priv { + unsigned long seqnum; + struct list_head list; + struct stub_device *sdev; + struct urb *urb; + + int unlinking; +}; + +struct stub_unlink { + unsigned long seqnum; + struct list_head list; + __u32 status; +}; + +/* same as SYSFS_BUS_ID_SIZE */ +#define BUSID_SIZE 32 + +struct bus_id_priv { + char name[BUSID_SIZE]; + char status; + int interf_count; + struct stub_device *sdev; + struct usb_device *udev; + char shutdown_busid; +}; + +/* stub_priv is allocated from stub_priv_cache */ +extern struct kmem_cache *stub_priv_cache; + +/* stub_dev.c */ +extern struct usb_device_driver stub_driver; + +/* stub_main.c */ +struct bus_id_priv *get_busid_priv(const char *busid); +int del_match_busid(char *busid); +void stub_device_cleanup_urbs(struct stub_device *sdev); + +/* stub_rx.c */ +int stub_rx_loop(void *data); + +/* stub_tx.c */ +void stub_enqueue_ret_unlink(struct stub_device *sdev, __u32 seqnum, + __u32 status); +void stub_complete(struct urb *urb); +int stub_tx_loop(void *data); + +#endif /* __USBIP_STUB_H */ |