| 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 | |