Takahiro Hirofuchi | 4d7b5c7 | 2008-07-09 14:56:51 -0600 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2003-2008 Takahiro Hirofuchi |
| 3 | * |
| 4 | * This is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License as published by |
| 6 | * the Free Software Foundation; either version 2 of the License, or |
| 7 | * (at your option) any later version. |
| 8 | * |
| 9 | * This is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
| 17 | * USA. |
| 18 | */ |
| 19 | |
| 20 | #include <linux/kernel.h> |
| 21 | #include <linux/list.h> |
| 22 | #include <linux/spinlock.h> |
| 23 | #include <linux/slab.h> |
| 24 | #include <linux/string.h> |
| 25 | #include <linux/module.h> |
| 26 | #include <linux/net.h> |
| 27 | |
| 28 | struct stub_device { |
| 29 | struct usb_interface *interface; |
| 30 | struct list_head list; |
| 31 | |
| 32 | struct usbip_device ud; |
| 33 | __u32 devid; |
| 34 | |
| 35 | /* |
| 36 | * stub_priv preserves private data of each urb. |
| 37 | * It is allocated as stub_priv_cache and assigned to urb->context. |
| 38 | * |
| 39 | * stub_priv is always linked to any one of 3 lists; |
| 40 | * priv_init: linked to this until the comletion of a urb. |
| 41 | * priv_tx : linked to this after the completion of a urb. |
| 42 | * priv_free: linked to this after the sending of the result. |
| 43 | * |
| 44 | * Any of these list operations should be locked by priv_lock. |
| 45 | */ |
| 46 | spinlock_t priv_lock; |
| 47 | struct list_head priv_init; |
| 48 | struct list_head priv_tx; |
| 49 | struct list_head priv_free; |
| 50 | |
| 51 | /* see comments for unlinking in stub_rx.c */ |
| 52 | struct list_head unlink_tx; |
| 53 | struct list_head unlink_free; |
| 54 | |
| 55 | |
| 56 | wait_queue_head_t tx_waitq; |
| 57 | }; |
| 58 | |
| 59 | /* private data into urb->priv */ |
| 60 | struct stub_priv { |
| 61 | unsigned long seqnum; |
| 62 | struct list_head list; |
| 63 | struct stub_device *sdev; |
| 64 | struct urb *urb; |
| 65 | |
| 66 | int unlinking; |
| 67 | }; |
| 68 | |
| 69 | struct stub_unlink { |
| 70 | unsigned long seqnum; |
| 71 | struct list_head list; |
| 72 | __u32 status; |
| 73 | }; |
| 74 | |
| 75 | |
| 76 | extern struct kmem_cache *stub_priv_cache; |
| 77 | |
| 78 | |
| 79 | /*-------------------------------------------------------------------------*/ |
| 80 | /* prototype declarations */ |
| 81 | |
| 82 | /* stub_tx.c */ |
| 83 | void stub_complete(struct urb *); |
| 84 | void stub_tx_loop(struct usbip_task *); |
| 85 | |
| 86 | /* stub_dev.c */ |
| 87 | extern struct usb_driver stub_driver; |
| 88 | |
| 89 | /* stub_rx.c */ |
| 90 | void stub_rx_loop(struct usbip_task *); |
| 91 | void stub_enqueue_ret_unlink(struct stub_device *, __u32, __u32); |
| 92 | |
| 93 | /* stub_main.c */ |
| 94 | int match_busid(char *busid); |
| 95 | void stub_device_cleanup_urbs(struct stub_device *sdev); |