From 4d7b5c7f8ad49b7f01fb8aed83c560ac43cfbda8 Mon Sep 17 00:00:00 2001 From: Takahiro Hirofuchi Date: Wed, 9 Jul 2008 14:56:51 -0600 Subject: Staging: USB/IP: add host driver This adds the USB IP client driver Brian Merrell cleaned up a lot of this code and submitted it for inclusion. Greg also did a lot of cleanup. Signed-off-by: Brian G. Merrell Cc: Takahiro Hirofuchi Signed-off-by: Greg Kroah-Hartman --- drivers/staging/usbip/stub.h | 95 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 95 insertions(+) create mode 100644 drivers/staging/usbip/stub.h (limited to 'drivers/staging/usbip/stub.h') diff --git a/drivers/staging/usbip/stub.h b/drivers/staging/usbip/stub.h new file mode 100644 index 0000000..f541a3a --- /dev/null +++ b/drivers/staging/usbip/stub.h @@ -0,0 +1,95 @@ +/* + * 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 +#include +#include +#include +#include +#include +#include + +struct stub_device { + struct usb_interface *interface; + struct list_head list; + + 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; +}; + + +extern struct kmem_cache *stub_priv_cache; + + +/*-------------------------------------------------------------------------*/ +/* prototype declarations */ + +/* stub_tx.c */ +void stub_complete(struct urb *); +void stub_tx_loop(struct usbip_task *); + +/* stub_dev.c */ +extern struct usb_driver stub_driver; + +/* stub_rx.c */ +void stub_rx_loop(struct usbip_task *); +void stub_enqueue_ret_unlink(struct stub_device *, __u32, __u32); + +/* stub_main.c */ +int match_busid(char *busid); +void stub_device_cleanup_urbs(struct stub_device *sdev); -- cgit v1.1