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f29fc259 DB |
1 | /* |
2 | * USB Networking Link Interface | |
3 | * | |
4 | * Copyright (C) 2000-2005 by David Brownell <dbrownell@users.sourceforge.net> | |
5 | * Copyright (C) 2003-2005 David Hollis <dhollis@davehollis.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | */ | |
21 | ||
22 | ||
23 | #ifndef __USBNET_H | |
24 | #define __USBNET_H | |
25 | ||
26 | ||
38bde1d4 | 27 | /* interface from usbnet core to each USB networking link we handle */ |
f29fc259 DB |
28 | struct usbnet { |
29 | /* housekeeping */ | |
30 | struct usb_device *udev; | |
31 | struct driver_info *driver_info; | |
296c0242 | 32 | const char *driver_name; |
f29fc259 | 33 | wait_queue_head_t *wait; |
a9fc6338 | 34 | struct mutex phy_mutex; |
f29fc259 DB |
35 | |
36 | /* i/o info: pipes etc */ | |
37 | unsigned in, out; | |
38 | struct usb_host_endpoint *status; | |
39 | unsigned maxpacket; | |
40 | struct timer_list delay; | |
41 | ||
42 | /* protocol/interface state */ | |
43 | struct net_device *net; | |
44 | struct net_device_stats stats; | |
45 | int msg_enable; | |
46 | unsigned long data [5]; | |
47 | u32 xid; | |
48 | u32 hard_mtu; /* count any extra framing */ | |
2e55cc72 | 49 | size_t rx_urb_size; /* size for rx urbs */ |
f29fc259 DB |
50 | struct mii_if_info mii; |
51 | ||
52 | /* various kinds of pending driver work */ | |
53 | struct sk_buff_head rxq; | |
54 | struct sk_buff_head txq; | |
55 | struct sk_buff_head done; | |
56 | struct urb *interrupt; | |
57 | struct tasklet_struct bh; | |
58 | ||
59 | struct work_struct kevent; | |
60 | unsigned long flags; | |
61 | # define EVENT_TX_HALT 0 | |
62 | # define EVENT_RX_HALT 1 | |
63 | # define EVENT_RX_MEMORY 2 | |
64 | # define EVENT_STS_SPLIT 3 | |
65 | # define EVENT_LINK_RESET 4 | |
66 | }; | |
67 | ||
38bde1d4 DB |
68 | static inline struct usb_driver *driver_of(struct usb_interface *intf) |
69 | { | |
70 | return to_usb_driver(intf->dev.driver); | |
71 | } | |
f29fc259 DB |
72 | |
73 | /* interface from the device/framing level "minidriver" to core */ | |
74 | struct driver_info { | |
75 | char *description; | |
76 | ||
77 | int flags; | |
78 | /* framing is CDC Ethernet, not writing ZLPs (hw issues), or optionally: */ | |
79 | #define FLAG_FRAMING_NC 0x0001 /* guard against device dropouts */ | |
80 | #define FLAG_FRAMING_GL 0x0002 /* genelink batches packets */ | |
81 | #define FLAG_FRAMING_Z 0x0004 /* zaurus adds a trailer */ | |
82 | #define FLAG_FRAMING_RN 0x0008 /* RNDIS batches, plus huge header */ | |
83 | ||
84 | #define FLAG_NO_SETINT 0x0010 /* device can't set_interface() */ | |
85 | #define FLAG_ETHER 0x0020 /* maybe use "eth%d" names */ | |
86 | ||
87 | #define FLAG_FRAMING_AX 0x0040 /* AX88772/178 packets */ | |
88 | ||
89 | /* init device ... can sleep, or cause probe() failure */ | |
90 | int (*bind)(struct usbnet *, struct usb_interface *); | |
91 | ||
92 | /* cleanup device ... can sleep, but can't fail */ | |
93 | void (*unbind)(struct usbnet *, struct usb_interface *); | |
94 | ||
95 | /* reset device ... can sleep */ | |
96 | int (*reset)(struct usbnet *); | |
97 | ||
98 | /* see if peer is connected ... can sleep */ | |
99 | int (*check_connect)(struct usbnet *); | |
100 | ||
101 | /* for status polling */ | |
102 | void (*status)(struct usbnet *, struct urb *); | |
103 | ||
104 | /* link reset handling, called from defer_kevent */ | |
105 | int (*link_reset)(struct usbnet *); | |
106 | ||
107 | /* fixup rx packet (strip framing) */ | |
108 | int (*rx_fixup)(struct usbnet *dev, struct sk_buff *skb); | |
109 | ||
110 | /* fixup tx packet (add framing) */ | |
111 | struct sk_buff *(*tx_fixup)(struct usbnet *dev, | |
55016f10 | 112 | struct sk_buff *skb, gfp_t flags); |
f29fc259 DB |
113 | |
114 | /* for new devices, use the descriptor-reading code instead */ | |
115 | int in; /* rx endpoint */ | |
116 | int out; /* tx endpoint */ | |
117 | ||
118 | unsigned long data; /* Misc driver specific data */ | |
119 | }; | |
120 | ||
38bde1d4 DB |
121 | /* Minidrivers are just drivers using the "usbnet" core as a powerful |
122 | * network-specific subroutine library ... that happens to do pretty | |
123 | * much everything except custom framing and chip-specific stuff. | |
124 | */ | |
125 | extern int usbnet_probe(struct usb_interface *, const struct usb_device_id *); | |
126 | extern int usbnet_suspend (struct usb_interface *, pm_message_t ); | |
127 | extern int usbnet_resume (struct usb_interface *); | |
128 | extern void usbnet_disconnect(struct usb_interface *); | |
129 | ||
f29fc259 | 130 | |
0aa599c5 | 131 | /* Drivers that reuse some of the standard USB CDC infrastructure |
59c51591 | 132 | * (notably, using multiple interfaces according to the CDC |
0aa599c5 DB |
133 | * union descriptor) get some helper code. |
134 | */ | |
135 | struct cdc_state { | |
136 | struct usb_cdc_header_desc *header; | |
137 | struct usb_cdc_union_desc *u; | |
138 | struct usb_cdc_ether_desc *ether; | |
139 | struct usb_interface *control; | |
140 | struct usb_interface *data; | |
141 | }; | |
142 | ||
143 | extern int usbnet_generic_cdc_bind (struct usbnet *, struct usb_interface *); | |
144 | extern void usbnet_cdc_unbind (struct usbnet *, struct usb_interface *); | |
145 | ||
146 | /* CDC and RNDIS support the same host-chosen packet filters for IN transfers */ | |
147 | #define DEFAULT_FILTER (USB_CDC_PACKET_TYPE_BROADCAST \ | |
148 | |USB_CDC_PACKET_TYPE_ALL_MULTICAST \ | |
149 | |USB_CDC_PACKET_TYPE_PROMISCUOUS \ | |
150 | |USB_CDC_PACKET_TYPE_DIRECTED) | |
151 | ||
152 | ||
f29fc259 DB |
153 | /* we record the state for each of our queued skbs */ |
154 | enum skb_state { | |
155 | illegal = 0, | |
156 | tx_start, tx_done, | |
157 | rx_start, rx_done, rx_cleanup | |
158 | }; | |
159 | ||
160 | struct skb_data { /* skb->cb is one of these */ | |
161 | struct urb *urb; | |
162 | struct usbnet *dev; | |
163 | enum skb_state state; | |
164 | size_t length; | |
165 | }; | |
166 | ||
167 | ||
2e55cc72 DB |
168 | extern int usbnet_get_endpoints(struct usbnet *, struct usb_interface *); |
169 | extern void usbnet_defer_kevent (struct usbnet *, int); | |
170 | extern void usbnet_skb_return (struct usbnet *, struct sk_buff *); | |
a99c1949 | 171 | extern void usbnet_unlink_rx_urbs(struct usbnet *); |
2e55cc72 | 172 | |
c41286fd AB |
173 | extern int usbnet_get_settings (struct net_device *net, struct ethtool_cmd *cmd); |
174 | extern int usbnet_set_settings (struct net_device *net, struct ethtool_cmd *cmd); | |
175 | extern u32 usbnet_get_link (struct net_device *net); | |
2e55cc72 DB |
176 | extern u32 usbnet_get_msglevel (struct net_device *); |
177 | extern void usbnet_set_msglevel (struct net_device *, u32); | |
178 | extern void usbnet_get_drvinfo (struct net_device *, struct ethtool_drvinfo *); | |
c41286fd | 179 | extern int usbnet_nway_reset(struct net_device *net); |
f29fc259 DB |
180 | |
181 | /* messaging support includes the interface name, so it must not be | |
182 | * used before it has one ... notably, in minidriver bind() calls. | |
183 | */ | |
184 | #ifdef DEBUG | |
185 | #define devdbg(usbnet, fmt, arg...) \ | |
186 | printk(KERN_DEBUG "%s: " fmt "\n" , (usbnet)->net->name , ## arg) | |
187 | #else | |
188 | #define devdbg(usbnet, fmt, arg...) do {} while(0) | |
189 | #endif | |
190 | ||
191 | #define deverr(usbnet, fmt, arg...) \ | |
192 | printk(KERN_ERR "%s: " fmt "\n" , (usbnet)->net->name , ## arg) | |
193 | #define devwarn(usbnet, fmt, arg...) \ | |
194 | printk(KERN_WARNING "%s: " fmt "\n" , (usbnet)->net->name , ## arg) | |
195 | ||
196 | #define devinfo(usbnet, fmt, arg...) \ | |
197 | printk(KERN_INFO "%s: " fmt "\n" , (usbnet)->net->name , ## arg); \ | |
198 | ||
199 | ||
200 | #endif /* __USBNET_H */ |