1 | /* $NetBSD: umodem.c,v 1.69 2016/07/07 06:55:42 msaitoh Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 1998 The NetBSD Foundation, Inc. |
5 | * All rights reserved. |
6 | * |
7 | * This code is derived from software contributed to The NetBSD Foundation |
8 | * by Lennart Augustsson (lennart@augustsson.net) at |
9 | * Carlstedt Research & Technology. |
10 | * |
11 | * Redistribution and use in source and binary forms, with or without |
12 | * modification, are permitted provided that the following conditions |
13 | * are met: |
14 | * 1. Redistributions of source code must retain the above copyright |
15 | * notice, this list of conditions and the following disclaimer. |
16 | * 2. Redistributions in binary form must reproduce the above copyright |
17 | * notice, this list of conditions and the following disclaimer in the |
18 | * documentation and/or other materials provided with the distribution. |
19 | * |
20 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
21 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
22 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
23 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
24 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
25 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
26 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
27 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
28 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
29 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
30 | * POSSIBILITY OF SUCH DAMAGE. |
31 | */ |
32 | |
33 | /* |
34 | * Comm Class spec: http://www.usb.org/developers/devclass_docs/usbccs10.pdf |
35 | * http://www.usb.org/developers/devclass_docs/usbcdc11.pdf |
36 | */ |
37 | |
38 | /* |
39 | * TODO: |
40 | * - Add error recovery in various places; the big problem is what |
41 | * to do in a callback if there is an error. |
42 | * - Implement a Call Device for modems without multiplexed commands. |
43 | * |
44 | */ |
45 | |
46 | #include <sys/cdefs.h> |
47 | __KERNEL_RCSID(0, "$NetBSD: umodem.c,v 1.69 2016/07/07 06:55:42 msaitoh Exp $" ); |
48 | |
49 | #include <sys/param.h> |
50 | #include <sys/systm.h> |
51 | #include <sys/kernel.h> |
52 | #include <sys/ioctl.h> |
53 | #include <sys/conf.h> |
54 | #include <sys/tty.h> |
55 | #include <sys/file.h> |
56 | #include <sys/select.h> |
57 | #include <sys/proc.h> |
58 | #include <sys/vnode.h> |
59 | #include <sys/device.h> |
60 | #include <sys/poll.h> |
61 | |
62 | #include <dev/usb/usb.h> |
63 | #include <dev/usb/usbcdc.h> |
64 | |
65 | #include <dev/usb/usbdi.h> |
66 | #include <dev/usb/usbdi_util.h> |
67 | #include <dev/usb/usbdevs.h> |
68 | #include <dev/usb/usb_quirks.h> |
69 | |
70 | #include <dev/usb/ucomvar.h> |
71 | #include <dev/usb/umodemvar.h> |
72 | |
73 | Static struct ucom_methods umodem_methods = { |
74 | .ucom_get_status = umodem_get_status, |
75 | .ucom_set = umodem_set, |
76 | .ucom_param = umodem_param, |
77 | .ucom_ioctl = umodem_ioctl, |
78 | .ucom_open = umodem_open, |
79 | .ucom_close = umodem_close, |
80 | .ucom_read = NULL, |
81 | .ucom_write = NULL, |
82 | }; |
83 | |
84 | int umodem_match(device_t, cfdata_t, void *); |
85 | void umodem_attach(device_t, device_t, void *); |
86 | int umodem_detach(device_t, int); |
87 | int umodem_activate(device_t, enum devact); |
88 | |
89 | extern struct cfdriver umodem_cd; |
90 | |
91 | CFATTACH_DECL_NEW(umodem, sizeof(struct umodem_softc), umodem_match, |
92 | umodem_attach, umodem_detach, umodem_activate); |
93 | |
94 | int |
95 | umodem_match(device_t parent, cfdata_t match, void *aux) |
96 | { |
97 | struct usbif_attach_arg *uiaa = aux; |
98 | usb_interface_descriptor_t *id; |
99 | int cm, acm; |
100 | |
101 | if (uiaa->uiaa_class != UICLASS_CDC || |
102 | uiaa->uiaa_subclass != UISUBCLASS_ABSTRACT_CONTROL_MODEL || |
103 | !(uiaa->uiaa_proto == UIPROTO_CDC_NOCLASS || uiaa->uiaa_proto == UIPROTO_CDC_AT)) |
104 | return UMATCH_NONE; |
105 | |
106 | id = usbd_get_interface_descriptor(uiaa->uiaa_iface); |
107 | if (umodem_get_caps(uiaa->uiaa_device, &cm, &acm, id) == -1) |
108 | return UMATCH_NONE; |
109 | |
110 | return UMATCH_IFACECLASS_IFACESUBCLASS_IFACEPROTO; |
111 | } |
112 | // |
113 | void |
114 | umodem_attach(device_t parent, device_t self, void *aux) |
115 | { |
116 | struct umodem_softc *sc = device_private(self); |
117 | struct usbif_attach_arg *uiaa = aux; |
118 | struct ucom_attach_args ucaa; |
119 | |
120 | ucaa.ucaa_portno = UCOM_UNK_PORTNO; |
121 | ucaa.ucaa_methods = &umodem_methods; |
122 | ucaa.ucaa_info = NULL; |
123 | |
124 | if (!pmf_device_register(self, NULL, NULL)) |
125 | aprint_error_dev(self, "couldn't establish power handler" ); |
126 | |
127 | if (umodem_common_attach(self, sc, uiaa, &ucaa)) |
128 | return; |
129 | return; |
130 | } |
131 | |
132 | int |
133 | umodem_activate(device_t self, enum devact act) |
134 | { |
135 | struct umodem_softc *sc = device_private(self); |
136 | |
137 | return umodem_common_activate(sc, act); |
138 | } |
139 | |
140 | int |
141 | umodem_detach(device_t self, int flags) |
142 | { |
143 | struct umodem_softc *sc = device_private(self); |
144 | |
145 | pmf_device_deregister(self); |
146 | |
147 | return umodem_common_detach(sc, flags); |
148 | } |
149 | |