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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 | ||
dda43a0e RD |
22 | #ifndef __LINUX_USB_USBNET_H |
23 | #define __LINUX_USB_USBNET_H | |
f29fc259 | 24 | |
38bde1d4 | 25 | /* interface from usbnet core to each USB networking link we handle */ |
f29fc259 DB |
26 | struct usbnet { |
27 | /* housekeeping */ | |
28 | struct usb_device *udev; | |
a11a6544 | 29 | struct usb_interface *intf; |
f29fc259 | 30 | struct driver_info *driver_info; |
296c0242 | 31 | const char *driver_name; |
476842b1 | 32 | void *driver_priv; |
f29fc259 | 33 | wait_queue_head_t *wait; |
a9fc6338 | 34 | struct mutex phy_mutex; |
36433127 | 35 | unsigned char suspend_count; |
f29fc259 DB |
36 | |
37 | /* i/o info: pipes etc */ | |
38 | unsigned in, out; | |
39 | struct usb_host_endpoint *status; | |
40 | unsigned maxpacket; | |
41 | struct timer_list delay; | |
42 | ||
43 | /* protocol/interface state */ | |
44 | struct net_device *net; | |
f29fc259 DB |
45 | int msg_enable; |
46 | unsigned long data [5]; | |
47 | u32 xid; | |
48 | u32 hard_mtu; /* count any extra framing */ | |
18ab458f | 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; | |
7834ddbc | 56 | struct sk_buff_head rxq_pause; |
f29fc259 DB |
57 | struct urb *interrupt; |
58 | struct tasklet_struct bh; | |
59 | ||
60 | struct work_struct kevent; | |
61 | unsigned long flags; | |
62 | # define EVENT_TX_HALT 0 | |
63 | # define EVENT_RX_HALT 1 | |
64 | # define EVENT_RX_MEMORY 2 | |
65 | # define EVENT_STS_SPLIT 3 | |
66 | # define EVENT_LINK_RESET 4 | |
7834ddbc | 67 | # define EVENT_RX_PAUSED 5 |
f29fc259 DB |
68 | }; |
69 | ||
38bde1d4 DB |
70 | static inline struct usb_driver *driver_of(struct usb_interface *intf) |
71 | { | |
72 | return to_usb_driver(intf->dev.driver); | |
73 | } | |
f29fc259 DB |
74 | |
75 | /* interface from the device/framing level "minidriver" to core */ | |
76 | struct driver_info { | |
77 | char *description; | |
78 | ||
79 | int flags; | |
80 | /* framing is CDC Ethernet, not writing ZLPs (hw issues), or optionally: */ | |
81 | #define FLAG_FRAMING_NC 0x0001 /* guard against device dropouts */ | |
82 | #define FLAG_FRAMING_GL 0x0002 /* genelink batches packets */ | |
83 | #define FLAG_FRAMING_Z 0x0004 /* zaurus adds a trailer */ | |
84 | #define FLAG_FRAMING_RN 0x0008 /* RNDIS batches, plus huge header */ | |
85 | ||
86 | #define FLAG_NO_SETINT 0x0010 /* device can't set_interface() */ | |
87 | #define FLAG_ETHER 0x0020 /* maybe use "eth%d" names */ | |
88 | ||
18ab458f | 89 | #define FLAG_FRAMING_AX 0x0040 /* AX88772/178 packets */ |
6e3bbcc5 | 90 | #define FLAG_WLAN 0x0080 /* use "wlan%d" names */ |
1487cd5e | 91 | #define FLAG_AVOID_UNLINK_URBS 0x0100 /* don't unlink urbs at usbnet_stop() */ |
6e3bbcc5 | 92 | |
f29fc259 DB |
93 | |
94 | /* init device ... can sleep, or cause probe() failure */ | |
95 | int (*bind)(struct usbnet *, struct usb_interface *); | |
96 | ||
97 | /* cleanup device ... can sleep, but can't fail */ | |
98 | void (*unbind)(struct usbnet *, struct usb_interface *); | |
99 | ||
100 | /* reset device ... can sleep */ | |
101 | int (*reset)(struct usbnet *); | |
102 | ||
a33e9e7f JK |
103 | /* stop device ... can sleep */ |
104 | int (*stop)(struct usbnet *); | |
105 | ||
f29fc259 DB |
106 | /* see if peer is connected ... can sleep */ |
107 | int (*check_connect)(struct usbnet *); | |
108 | ||
109 | /* for status polling */ | |
110 | void (*status)(struct usbnet *, struct urb *); | |
111 | ||
112 | /* link reset handling, called from defer_kevent */ | |
113 | int (*link_reset)(struct usbnet *); | |
114 | ||
115 | /* fixup rx packet (strip framing) */ | |
116 | int (*rx_fixup)(struct usbnet *dev, struct sk_buff *skb); | |
117 | ||
118 | /* fixup tx packet (add framing) */ | |
119 | struct sk_buff *(*tx_fixup)(struct usbnet *dev, | |
55016f10 | 120 | struct sk_buff *skb, gfp_t flags); |
7c39e038 JK |
121 | |
122 | /* early initialization code, can sleep. This is for minidrivers | |
123 | * having 'subminidrivers' that need to do extra initialization | |
124 | * right after minidriver have initialized hardware. */ | |
125 | int (*early_init)(struct usbnet *dev); | |
5d6ecf6c | 126 | |
2a4901bc JK |
127 | /* called by minidriver when receiving indication */ |
128 | void (*indication)(struct usbnet *dev, void *ind, int indlen); | |
f29fc259 DB |
129 | |
130 | /* for new devices, use the descriptor-reading code instead */ | |
131 | int in; /* rx endpoint */ | |
132 | int out; /* tx endpoint */ | |
133 | ||
134 | unsigned long data; /* Misc driver specific data */ | |
135 | }; | |
136 | ||
38bde1d4 DB |
137 | /* Minidrivers are just drivers using the "usbnet" core as a powerful |
138 | * network-specific subroutine library ... that happens to do pretty | |
139 | * much everything except custom framing and chip-specific stuff. | |
140 | */ | |
141 | extern int usbnet_probe(struct usb_interface *, const struct usb_device_id *); | |
142 | extern int usbnet_suspend (struct usb_interface *, pm_message_t ); | |
143 | extern int usbnet_resume (struct usb_interface *); | |
144 | extern void usbnet_disconnect(struct usb_interface *); | |
145 | ||
f29fc259 | 146 | |
0aa599c5 | 147 | /* Drivers that reuse some of the standard USB CDC infrastructure |
59c51591 | 148 | * (notably, using multiple interfaces according to the CDC |
0aa599c5 DB |
149 | * union descriptor) get some helper code. |
150 | */ | |
151 | struct cdc_state { | |
152 | struct usb_cdc_header_desc *header; | |
153 | struct usb_cdc_union_desc *u; | |
154 | struct usb_cdc_ether_desc *ether; | |
155 | struct usb_interface *control; | |
156 | struct usb_interface *data; | |
157 | }; | |
158 | ||
159 | extern int usbnet_generic_cdc_bind (struct usbnet *, struct usb_interface *); | |
160 | extern void usbnet_cdc_unbind (struct usbnet *, struct usb_interface *); | |
161 | ||
162 | /* CDC and RNDIS support the same host-chosen packet filters for IN transfers */ | |
163 | #define DEFAULT_FILTER (USB_CDC_PACKET_TYPE_BROADCAST \ | |
18ab458f DB |
164 | |USB_CDC_PACKET_TYPE_ALL_MULTICAST \ |
165 | |USB_CDC_PACKET_TYPE_PROMISCUOUS \ | |
166 | |USB_CDC_PACKET_TYPE_DIRECTED) | |
0aa599c5 DB |
167 | |
168 | ||
f29fc259 DB |
169 | /* we record the state for each of our queued skbs */ |
170 | enum skb_state { | |
171 | illegal = 0, | |
172 | tx_start, tx_done, | |
173 | rx_start, rx_done, rx_cleanup | |
174 | }; | |
175 | ||
176 | struct skb_data { /* skb->cb is one of these */ | |
177 | struct urb *urb; | |
178 | struct usbnet *dev; | |
179 | enum skb_state state; | |
180 | size_t length; | |
181 | }; | |
182 | ||
777baa47 SH |
183 | extern int usbnet_open (struct net_device *net); |
184 | extern int usbnet_stop (struct net_device *net); | |
25a79c41 SH |
185 | extern netdev_tx_t usbnet_start_xmit (struct sk_buff *skb, |
186 | struct net_device *net); | |
777baa47 SH |
187 | extern void usbnet_tx_timeout (struct net_device *net); |
188 | extern int usbnet_change_mtu (struct net_device *net, int new_mtu); | |
f29fc259 | 189 | |
2e55cc72 | 190 | extern int usbnet_get_endpoints(struct usbnet *, struct usb_interface *); |
03ad032b | 191 | extern int usbnet_get_ethernet_addr(struct usbnet *, int); |
2e55cc72 DB |
192 | extern void usbnet_defer_kevent (struct usbnet *, int); |
193 | extern void usbnet_skb_return (struct usbnet *, struct sk_buff *); | |
a99c1949 | 194 | extern void usbnet_unlink_rx_urbs(struct usbnet *); |
2e55cc72 | 195 | |
7834ddbc JK |
196 | extern void usbnet_pause_rx(struct usbnet *); |
197 | extern void usbnet_resume_rx(struct usbnet *); | |
198 | extern void usbnet_purge_paused_rxq(struct usbnet *); | |
199 | ||
c41286fd AB |
200 | extern int usbnet_get_settings (struct net_device *net, struct ethtool_cmd *cmd); |
201 | extern int usbnet_set_settings (struct net_device *net, struct ethtool_cmd *cmd); | |
202 | extern u32 usbnet_get_link (struct net_device *net); | |
2e55cc72 DB |
203 | extern u32 usbnet_get_msglevel (struct net_device *); |
204 | extern void usbnet_set_msglevel (struct net_device *, u32); | |
205 | extern void usbnet_get_drvinfo (struct net_device *, struct ethtool_drvinfo *); | |
c41286fd | 206 | extern int usbnet_nway_reset(struct net_device *net); |
f29fc259 DB |
207 | |
208 | /* messaging support includes the interface name, so it must not be | |
209 | * used before it has one ... notably, in minidriver bind() calls. | |
210 | */ | |
211 | #ifdef DEBUG | |
212 | #define devdbg(usbnet, fmt, arg...) \ | |
213 | printk(KERN_DEBUG "%s: " fmt "\n" , (usbnet)->net->name , ## arg) | |
214 | #else | |
0b491eee SG |
215 | #define devdbg(usbnet, fmt, arg...) \ |
216 | ({ if (0) printk(KERN_DEBUG "%s: " fmt "\n" , (usbnet)->net->name , \ | |
217 | ## arg); 0; }) | |
f29fc259 DB |
218 | #endif |
219 | ||
220 | #define deverr(usbnet, fmt, arg...) \ | |
221 | printk(KERN_ERR "%s: " fmt "\n" , (usbnet)->net->name , ## arg) | |
222 | #define devwarn(usbnet, fmt, arg...) \ | |
223 | printk(KERN_WARNING "%s: " fmt "\n" , (usbnet)->net->name , ## arg) | |
224 | ||
225 | #define devinfo(usbnet, fmt, arg...) \ | |
226 | printk(KERN_INFO "%s: " fmt "\n" , (usbnet)->net->name , ## arg); \ | |
227 | ||
228 | ||
dda43a0e | 229 | #endif /* __LINUX_USB_USBNET_H */ |