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umodem.c revision 1.58 
      1 /*	$NetBSD: umodem.c,v 1.58 2008/05/24 16:40:58 cube 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 (at) 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 1.58 2008/05/24 16:40:58 cube 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 	umodem_get_status,
     75 	umodem_set,
     76 	umodem_param,
     77 	umodem_ioctl,
     78 	umodem_open,
     79 	umodem_close,
     80 	NULL,
     81 	NULL,
     82 };
     83 
     84 USB_DECLARE_DRIVER(umodem);
     85 
     86 USB_MATCH(umodem)
     87 {
     88 	USB_IFMATCH_START(umodem, uaa);
     89 	usb_interface_descriptor_t *id;
     90 	int cm, acm;
     91 
     92 	if (uaa->class != UICLASS_CDC ||
     93 	    uaa->subclass != UISUBCLASS_ABSTRACT_CONTROL_MODEL ||
     94 	    uaa->proto != UIPROTO_CDC_AT)
     95 		return (UMATCH_NONE);
     96 
     97 	id = usbd_get_interface_descriptor(uaa->iface);
     98 	if (umodem_get_caps(uaa->device, &cm, &acm, id) == -1)
     99 		return (UMATCH_NONE);
    100 
    101 	return (UMATCH_IFACECLASS_IFACESUBCLASS_IFACEPROTO);
    102 }
    103 
    104 USB_ATTACH(umodem)
    105 {
    106 	USB_IFATTACH_START(umodem, sc, uaa);
    107 	struct ucom_attach_args uca;
    108 
    109 	uca.portno = UCOM_UNK_PORTNO;
    110 	uca.methods = &umodem_methods;
    111 	uca.info = NULL;
    112 
    113 	if (umodem_common_attach(self, sc, uaa, &uca))
    114 		USB_ATTACH_ERROR_RETURN;
    115 	USB_ATTACH_SUCCESS_RETURN;
    116 }
    117 
    118 #ifdef __strong_alias
    119 __strong_alias(umodem_activate,umodem_common_activate)
    120 #else
    121 int
    122 umodem_activate(device_ptr_t self, enum devact act)
    123 {
    124 	struct umodem_softc *sc = device_private(self);
    125 
    126 	return umodem_common_activate(sc, act);
    127 }
    128 #endif
    129 
    130 USB_DETACH(umodem)
    131 {
    132 	USB_DETACH_START(umodem, sc);
    133 #ifdef __FreeBSD__
    134 	int flags = 0;
    135 #endif
    136 
    137 	return umodem_common_detach(sc, flags);
    138 }
    139