root/dev/usb/umodem.c

DEFINITIONS

1. umodem_match
2. umodem_attach
3. umodem_open
4. umodem_close
5. umodem_intr
6. umodem_get_status
7. umodem_param
8. umodem_ioctl
9. umodem_dtr
10. umodem_rts
11. umodem_set_line_state
12. umodem_break
13. umodem_set
14. umodem_set_line_coding
15. umodem_set_comm_feature
16. umodem_activate
17. umodem_detach

    1 /*      $OpenBSD: umodem.c,v 1.34 2007/06/18 09:55:58 mbalmer Exp $ */
    2 /*      $NetBSD: umodem.c,v 1.45 2002/09/23 05:51:23 simonb Exp $       */
    4 /*
    5  * Copyright (c) 1998 The NetBSD Foundation, Inc.
    6  * All rights reserved.
    7  *
    8  * This code is derived from software contributed to The NetBSD Foundation
    9  * by Lennart Augustsson (lennart@augustsson.net) at
   10  * Carlstedt Research & Technology.
   11  *
   12  * Redistribution and use in source and binary forms, with or without
   13  * modification, are permitted provided that the following conditions
   14  * are met:
   15  * 1. Redistributions of source code must retain the above copyright
   16  *    notice, this list of conditions and the following disclaimer.
   17  * 2. Redistributions in binary form must reproduce the above copyright
   18  *    notice, this list of conditions and the following disclaimer in the
   19  *    documentation and/or other materials provided with the distribution.
   20  * 3. All advertising materials mentioning features or use of this software
   21  *    must display the following acknowledgement:
   22  *        This product includes software developed by the NetBSD
   23  *        Foundation, Inc. and its contributors.
   24  * 4. Neither the name of The NetBSD Foundation nor the names of its
   25  *    contributors may be used to endorse or promote products derived
   26  *    from this software without specific prior written permission.
   27  *
   28  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   29  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   30  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   31  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   32  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   33  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   34  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   35  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   36  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   37  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   38  * POSSIBILITY OF SUCH DAMAGE.
   39  */
   41 /*
   42  * Comm Class spec:  http://www.usb.org/developers/devclass_docs/usbccs10.pdf
   43  *                   http://www.usb.org/developers/devclass_docs/usbcdc11.pdf
   44  */
   46 /*
   47  * TODO:
   48  * - Add error recovery in various places; the big problem is what
   49  *   to do in a callback if there is an error.
   50  * - Implement a Call Device for modems without multiplexed commands.
   51  *
   52  */
   54 #include <sys/param.h>
   55 #include <sys/systm.h>
   56 #include <sys/kernel.h>
   57 #include <sys/ioctl.h>
   58 #include <sys/conf.h>
   59 #include <sys/tty.h>
   60 #include <sys/file.h>
   61 #include <sys/selinfo.h>
   62 #include <sys/proc.h>
   63 #include <sys/vnode.h>
   64 #include <sys/device.h>
   65 #include <sys/poll.h>
   67 #include <dev/usb/usb.h>
   68 #include <dev/usb/usbcdc.h>
   70 #include <dev/usb/usbdi.h>
   71 #include <dev/usb/usbdi_util.h>
   72 #include <dev/usb/usbdevs.h>
   73 #include <dev/usb/usb_quirks.h>
   75 #include <dev/usb/usbdevs.h>
   76 #include <dev/usb/ucomvar.h>
   78 #ifdef UMODEM_DEBUG
   79 #define DPRINTFN(n, x)  do { if (umodemdebug > (n)) printf x; } while (0)
   80 int     umodemdebug = 0;
   81 #else
   82 #define DPRINTFN(n, x)
   83 #endif
   84 #define DPRINTF(x) DPRINTFN(0, x)
   86 /*
   87  * These are the maximum number of bytes transferred per frame.
   88  * Buffers are this large to deal with high speed wireless devices.
   89  * Capped at 1024 as ttymalloc() is limited to this amount.
   90  */
   91 #define UMODEMIBUFSIZE 1024
   92 #define UMODEMOBUFSIZE 1024
   94 struct umodem_softc {
   95         struct device            sc_dev;        /* base device */
usbd_device_handle       sc_udev;       /* USB device */
   99         int                      sc_ctl_iface_no;
usbd_interface_handle    sc_ctl_iface;  /* control interface */
  101         int                      sc_data_iface_no;
usbd_interface_handle    sc_data_iface; /* data interface */
  104         int                      sc_cm_cap;     /* CM capabilities */
  105         int                      sc_acm_cap;    /* ACM capabilities */
  107         int                      sc_cm_over_data;
usb_cdc_line_state_t     sc_line_state; /* current line state */
u_char                   sc_dtr;        /* current DTR state */
u_char                   sc_rts;        /* current RTS state */
  113         struct device           *sc_subdev;     /* ucom device */
u_char                   sc_opening;    /* lock during open */
u_char                   sc_dying;      /* disconnecting */
  118         int                      sc_ctl_notify; /* Notification endpoint */
usbd_pipe_handle         sc_notify_pipe; /* Notification pipe */
usb_cdc_notification_t   sc_notify_buf; /* Notification structure */
u_char                   sc_lsr;        /* Local status register */
u_char                   sc_msr;        /* Modem status register */
  123 };
usbd_status umodem_set_comm_feature(struct umodem_softc *sc,
  126                                            int feature, int state);
usbd_status umodem_set_line_coding(struct umodem_softc *sc,
usb_cdc_line_state_t *state);
  130 void    umodem_get_status(void *, int portno, u_char *lsr, u_char *msr);
  131 void    umodem_set(void *, int, int, int);
  132 void    umodem_dtr(struct umodem_softc *, int);
  133 void    umodem_rts(struct umodem_softc *, int);
  134 void    umodem_break(struct umodem_softc *, int);
  135 void    umodem_set_line_state(struct umodem_softc *);
  136 int     umodem_param(void *, int, struct termios *);
  137 int     umodem_ioctl(void *, int, u_long, caddr_t, int, struct proc *);
  138 int     umodem_open(void *, int portno);
  139 void    umodem_close(void *, int portno);
  140 void    umodem_intr(usbd_xfer_handle, usbd_private_handle, usbd_status);
  142 struct ucom_methods umodem_methods = {
umodem_get_status,
umodem_set,
umodem_param,
umodem_ioctl,
umodem_open,
umodem_close,
NULL,
NULL,
  151 };
  153 int umodem_match(struct device *, void *, void *); 
  154 void umodem_attach(struct device *, struct device *, void *); 
  155 int umodem_detach(struct device *, int); 
  156 int umodem_activate(struct device *, enum devact); 
  158 struct cfdriver umodem_cd = { 
NULL, "umodem", DV_DULL 
  160 }; 
  162 const struct cfattach umodem_ca = { 
  163         sizeof(struct umodem_softc), 
umodem_match, 
umodem_attach, 
umodem_detach, 
umodem_activate, 
  168 };
  170 int
umodem_match(struct device *parent, void *match, void *aux)
  172 {
  173         struct usb_attach_arg *uaa = aux;
usb_interface_descriptor_t *id;
usb_device_descriptor_t *dd;
  176         int ret;
  178         if (uaa->iface == NULL)
  179                 return (UMATCH_NONE);
id = usbd_get_interface_descriptor(uaa->iface);
dd = usbd_get_device_descriptor(uaa->device);
  183         if (id == NULL || dd == NULL)
  184                 return (UMATCH_NONE);
ret = UMATCH_NONE;
  187         if (UGETW(dd->idVendor) == USB_VENDOR_KYOCERA &&
UGETW(dd->idProduct) == USB_PRODUCT_KYOCERA_AHK3001V &&
id->bInterfaceNumber == 0)
ret = UMATCH_VENDOR_PRODUCT;
  192         if (ret == UMATCH_NONE &&
id->bInterfaceClass == UICLASS_CDC &&
id->bInterfaceSubClass == UISUBCLASS_ABSTRACT_CONTROL_MODEL &&
id->bInterfaceProtocol == UIPROTO_CDC_AT)
ret = UMATCH_IFACECLASS_IFACESUBCLASS_IFACEPROTO;
  198         return (ret);
  199 }
  201 void
umodem_attach(struct device *parent, struct device *self, void *aux)
  203 {
  204         struct umodem_softc *sc = (struct umodem_softc *)self;
  205         struct usb_attach_arg *uaa = aux;
usbd_device_handle dev = uaa->device;
usb_interface_descriptor_t *id;
usb_endpoint_descriptor_t *ed;
usb_cdc_cm_descriptor_t *cmd;      
usb_interface_descriptor_t *idesc;
  211         const usb_cdc_acm_descriptor_t *acmd;
  212         const usb_cdc_union_descriptor_t *uniond;
  213         const usb_descriptor_t *desc;
usbd_desc_iter_t iter;
  215         char *devinfop;
usbd_status err;
  217         int current_iface_no = -1;
  218         int i;
  219         struct ucom_attach_args uca;
devinfop = usbd_devinfo_alloc(dev, 0);
printf("\n");
sc->sc_udev = dev;
sc->sc_ctl_iface = uaa->iface;
id = usbd_get_interface_descriptor(sc->sc_ctl_iface);
printf("%s: %s, iclass %d/%d\n", sc->sc_dev.dv_xname,
devinfop, id->bInterfaceClass, id->bInterfaceSubClass);
usbd_devinfo_free(devinfop);
sc->sc_ctl_iface_no = id->bInterfaceNumber;
  233         /* Get the data interface no. and capabilities */
sc->sc_cm_cap = 0;
sc->sc_data_iface_no = 0;
sc->sc_acm_cap = 0;
usb_desc_iter_init(dev, &iter);
desc = usb_desc_iter_next(&iter);
  239         while (desc) {
  240                 if (desc->bDescriptorType == UDESC_INTERFACE) {
idesc = (usb_interface_descriptor_t *)desc;
current_iface_no = idesc->bInterfaceNumber;
  243                 }
  244                 if (current_iface_no == sc->sc_ctl_iface_no &&
desc->bDescriptorType == UDESC_CS_INTERFACE) {
  246                         switch(desc->bDescriptorSubtype) {
  247                         case UDESCSUB_CDC_CM:
cmd = (usb_cdc_cm_descriptor_t *)desc;
sc->sc_cm_cap = cmd->bmCapabilities;
sc->sc_data_iface_no = cmd->bDataInterface;
  251                                 break;
  252                         case UDESCSUB_CDC_ACM:
acmd = (usb_cdc_acm_descriptor_t *)desc;
sc->sc_acm_cap = acmd->bmCapabilities;
  255                                 break;
  256                         case UDESCSUB_CDC_UNION:
uniond = (usb_cdc_union_descriptor_t *)desc;
sc->sc_data_iface_no =
uniond->bSlaveInterface[0];
  260                                 break;
  261                         }
  262                 }
desc = usb_desc_iter_next(&iter);
  264         }
  266         if (sc->sc_data_iface_no == 0) {
printf("%s: no pointer to data interface\n",
sc->sc_dev.dv_xname);
  269                 goto bad;
  270         }
printf("%s: data interface %d, has %sCM over data, has %sbreak\n",
sc->sc_dev.dv_xname, sc->sc_data_iface_no,
sc->sc_cm_cap & USB_CDC_CM_OVER_DATA ? "" : "no ",
sc->sc_acm_cap & USB_CDC_ACM_HAS_BREAK ? "" : "no ");
  277         /* Get the data interface too. */
  278         for (i = 0; i < uaa->nifaces; i++) {
  279                 if (uaa->ifaces[i] != NULL) {
id = usbd_get_interface_descriptor(uaa->ifaces[i]);
  281                         if (id != NULL &&
id->bInterfaceNumber == sc->sc_data_iface_no) {
sc->sc_data_iface = uaa->ifaces[i];
uaa->ifaces[i] = NULL;
  285                         }
  286                 }
  287         }
  288         if (sc->sc_data_iface == NULL) {
printf("%s: no data interface\n", sc->sc_dev.dv_xname);
  290                 goto bad;
  291         }
  293         /*
  294          * Find the bulk endpoints.
  295          * Iterate over all endpoints in the data interface and take note.
  296          */
uca.bulkin = uca.bulkout = -1;
id = usbd_get_interface_descriptor(sc->sc_data_iface);
  300         for (i = 0; i < id->bNumEndpoints; i++) {
ed = usbd_interface2endpoint_descriptor(sc->sc_data_iface, i);
  302                 if (ed == NULL) {
printf("%s: no endpoint descriptor for %d\n",
sc->sc_dev.dv_xname, i);
  305                         goto bad;
  306                 }
  307                 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
  308                     (ed->bmAttributes & UE_XFERTYPE) == UE_BULK) {
uca.bulkin = ed->bEndpointAddress;
  310                 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT &&
  311                            (ed->bmAttributes & UE_XFERTYPE) == UE_BULK) {
uca.bulkout = ed->bEndpointAddress;
  313                 }
  314         }
  316         if (uca.bulkin == -1) {
printf("%s: Could not find data bulk in\n",
sc->sc_dev.dv_xname);
  319                 goto bad;
  320         }
  321         if (uca.bulkout == -1) {
printf("%s: Could not find data bulk out\n",
sc->sc_dev.dv_xname);
  324                 goto bad;
  325         }
  327         if (usbd_get_quirks(sc->sc_udev)->uq_flags & UQ_ASSUME_CM_OVER_DATA) {
sc->sc_cm_over_data = 1;
  329         } else {
  330                 if (sc->sc_cm_cap & USB_CDC_CM_OVER_DATA) {
  331                         if (sc->sc_acm_cap & USB_CDC_ACM_HAS_FEATURE)
err = umodem_set_comm_feature(sc,
UCDC_ABSTRACT_STATE, UCDC_DATA_MULTIPLEXED);
  334                         else
err = 0;
  336                         if (err) {
printf("%s: could not set data multiplex mode\n",
sc->sc_dev.dv_xname);
  339                                 goto bad;
  340                         }
sc->sc_cm_over_data = 1;
  342                 }
  343         }
  345         /*
  346          * The standard allows for notification messages (to indicate things
  347          * like a modem hangup) to come in via an interrupt endpoint
  348          * off of the control interface.  Iterate over the endpoints on
  349          * the control interface and see if there are any interrupt
  350          * endpoints; if there are, then register it.
  351          */
sc->sc_ctl_notify = -1;
sc->sc_notify_pipe = NULL;
id = usbd_get_interface_descriptor(sc->sc_ctl_iface);
  357         for (i = 0; i < id->bNumEndpoints; i++) {
ed = usbd_interface2endpoint_descriptor(sc->sc_ctl_iface, i);
  359                 if (ed == NULL)
  360                         continue;
  362                 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
  363                     (ed->bmAttributes & UE_XFERTYPE) == UE_INTERRUPT) {
printf("%s: status change notification available\n",
sc->sc_dev.dv_xname);
sc->sc_ctl_notify = ed->bEndpointAddress;
  367                 }
  368         }
sc->sc_dtr = -1;
uca.portno = UCOM_UNK_PORTNO;
  373         /* bulkin, bulkout set above */
uca.ibufsize = UMODEMIBUFSIZE;
uca.obufsize = UMODEMOBUFSIZE;
uca.ibufsizepad = UMODEMIBUFSIZE;
uca.opkthdrlen = 0;
uca.device = sc->sc_udev;
uca.iface = sc->sc_data_iface;
uca.methods = &umodem_methods;
uca.arg = sc;
uca.info = NULL;
usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev,
  385                            &sc->sc_dev);
DPRINTF(("umodem_attach: sc=%p\n", sc));
sc->sc_subdev = config_found_sm(self, &uca, ucomprint, ucomsubmatch);
  390         return;
bad:
sc->sc_dying = 1;
  394 }
  396 int
umodem_open(void *addr, int portno)
  398 {
  399         struct umodem_softc *sc = addr;
  400         int err;
DPRINTF(("umodem_open: sc=%p\n", sc));
  404         if (sc->sc_ctl_notify != -1 && sc->sc_notify_pipe == NULL) {
err = usbd_open_pipe_intr(sc->sc_ctl_iface, sc->sc_ctl_notify,
USBD_SHORT_XFER_OK, &sc->sc_notify_pipe, sc,
  407                     &sc->sc_notify_buf, sizeof(sc->sc_notify_buf),
umodem_intr, USBD_DEFAULT_INTERVAL);
  410                 if (err) {
DPRINTF(("Failed to establish notify pipe: %s\n",
usbd_errstr(err)));
  413                         return EIO;
  414                 }
  415         }
  417         return 0;
  418 }
  420 void
umodem_close(void *addr, int portno)
  422 {
  423         struct umodem_softc *sc = addr;
  424         int err;
DPRINTF(("umodem_close: sc=%p\n", sc));
  428         if (sc->sc_notify_pipe != NULL) {
err = usbd_abort_pipe(sc->sc_notify_pipe);
  430                 if (err)
printf("%s: abort notify pipe failed: %s\n",
sc->sc_dev.dv_xname, usbd_errstr(err));
err = usbd_close_pipe(sc->sc_notify_pipe);
  434                 if (err)
printf("%s: close notify pipe failed: %s\n",
sc->sc_dev.dv_xname, usbd_errstr(err));
sc->sc_notify_pipe = NULL;
  438         }
  439 }
  441 void
umodem_intr(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
  443 {
  444         struct umodem_softc *sc = priv;
u_char mstatus;
  447         if (sc->sc_dying)
  448                 return;
  450         if (status != USBD_NORMAL_COMPLETION) {
  451                 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED)
  452                         return;
printf("%s: abnormal status: %s\n", sc->sc_dev.dv_xname,
usbd_errstr(status));
  455                 return;
  456         }
  458         if (sc->sc_notify_buf.bmRequestType != UCDC_NOTIFICATION) {
DPRINTF(("%s: unknown message type (%02x) on notify pipe\n",
sc->sc_dev.dv_xname,
sc->sc_notify_buf.bmRequestType));
  462                 return;
  463         }
  465         switch (sc->sc_notify_buf.bNotification) {
  466         case UCDC_N_SERIAL_STATE:
  467                 /*
  468                  * Set the serial state in ucom driver based on
  469                  * the bits from the notify message
  470                  */
  471                 if (UGETW(sc->sc_notify_buf.wLength) != 2) {
printf("%s: Invalid notification length! (%d)\n",
sc->sc_dev.dv_xname,
UGETW(sc->sc_notify_buf.wLength));
  475                         break;
  476                 }
DPRINTF(("%s: notify bytes = %02x%02x\n",
sc->sc_dev.dv_xname,
sc->sc_notify_buf.data[0],
sc->sc_notify_buf.data[1]));
  481                 /* Currently, lsr is always zero. */
sc->sc_lsr = sc->sc_msr = 0;
mstatus = sc->sc_notify_buf.data[0];
  485                 if (ISSET(mstatus, UCDC_N_SERIAL_RI))
sc->sc_msr |= UMSR_RI;
  487                 if (ISSET(mstatus, UCDC_N_SERIAL_DSR))
sc->sc_msr |= UMSR_DSR;
  489                 if (ISSET(mstatus, UCDC_N_SERIAL_DCD))
sc->sc_msr |= UMSR_DCD;
ucom_status_change((struct ucom_softc *)sc->sc_subdev);
  492                 break;
  493         default:
DPRINTF(("%s: unknown notify message: %02x\n",
sc->sc_dev.dv_xname,
sc->sc_notify_buf.bNotification));
  497                 break;
  498         }
  499 }
  501 void
umodem_get_status(void *addr, int portno, u_char *lsr, u_char *msr)
  503 {
  504         struct umodem_softc *sc = addr;
DPRINTF(("umodem_get_status:\n"));
  508         if (lsr != NULL)
  509                 *lsr = sc->sc_lsr;
  510         if (msr != NULL)
  511                 *msr = sc->sc_msr;
  512 }
  514 int
umodem_param(void *addr, int portno, struct termios *t)
  516 {
  517         struct umodem_softc *sc = addr;
usbd_status err;
usb_cdc_line_state_t ls;
DPRINTF(("umodem_param: sc=%p\n", sc));
USETDW(ls.dwDTERate, t->c_ospeed);
  524         if (ISSET(t->c_cflag, CSTOPB))
ls.bCharFormat = UCDC_STOP_BIT_2;
  526         else
ls.bCharFormat = UCDC_STOP_BIT_1;
  528         if (ISSET(t->c_cflag, PARENB)) {
  529                 if (ISSET(t->c_cflag, PARODD))
ls.bParityType = UCDC_PARITY_ODD;
  531                 else
ls.bParityType = UCDC_PARITY_EVEN;
  533         } else
ls.bParityType = UCDC_PARITY_NONE;
  535         switch (ISSET(t->c_cflag, CSIZE)) {
  536         case CS5:
ls.bDataBits = 5;
  538                 break;
  539         case CS6:
ls.bDataBits = 6;
  541                 break;
  542         case CS7:
ls.bDataBits = 7;
  544                 break;
  545         case CS8:
ls.bDataBits = 8;
  547                 break;
  548         }
err = umodem_set_line_coding(sc, &ls);
  551         if (err) {
DPRINTF(("umodem_param: err=%s\n", usbd_errstr(err)));
  553                 return (1);
  554         }
  555         return (0);
  556 }
  558 int
umodem_ioctl(void *addr, int portno, u_long cmd, caddr_t data, int flag,
  560              struct proc *p)
  561 {
  562         struct umodem_softc *sc = addr;
  563         int error = 0;
  565         if (sc->sc_dying)
  566                 return (EIO);
DPRINTF(("umodemioctl: cmd=0x%08lx\n", cmd));
  570         switch (cmd) {
  571         case USB_GET_CM_OVER_DATA:
  572                 *(int *)data = sc->sc_cm_over_data;
  573                 break;
  575         case USB_SET_CM_OVER_DATA:
  576                 if (*(int *)data != sc->sc_cm_over_data) {
  577                         /* XXX change it */
  578                 }
  579                 break;
  581         default:
DPRINTF(("umodemioctl: unknown\n"));
error = ENOTTY;
  584                 break;
  585         }
  587         return (error);
  588 }
  590 void
umodem_dtr(struct umodem_softc *sc, int onoff)
  592 {
DPRINTF(("umodem_modem: onoff=%d\n", onoff));
  595         if (sc->sc_dtr == onoff)
  596                 return;
sc->sc_dtr = onoff;
umodem_set_line_state(sc);
  600 }
  602 void
umodem_rts(struct umodem_softc *sc, int onoff)
  604 {
DPRINTF(("umodem_modem: onoff=%d\n", onoff));
  607         if (sc->sc_rts == onoff)
  608                 return;
sc->sc_rts = onoff;
umodem_set_line_state(sc);
  612 }
  614 void
umodem_set_line_state(struct umodem_softc *sc)
  616 {
usb_device_request_t req;
  618         int ls;
ls = (sc->sc_dtr ? UCDC_LINE_DTR : 0) |
  621              (sc->sc_rts ? UCDC_LINE_RTS : 0);
req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
req.bRequest = UCDC_SET_CONTROL_LINE_STATE;
USETW(req.wValue, ls);
USETW(req.wIndex, sc->sc_ctl_iface_no);
USETW(req.wLength, 0);
  628         (void)usbd_do_request(sc->sc_udev, &req, 0);
  630 }
  632 void
umodem_break(struct umodem_softc *sc, int onoff)
  634 {
usb_device_request_t req;
DPRINTF(("umodem_break: onoff=%d\n", onoff));
  639         if (!(sc->sc_acm_cap & USB_CDC_ACM_HAS_BREAK))
  640                 return;
req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
req.bRequest = UCDC_SEND_BREAK;
USETW(req.wValue, onoff ? UCDC_BREAK_ON : UCDC_BREAK_OFF);
USETW(req.wIndex, sc->sc_ctl_iface_no);
USETW(req.wLength, 0);
  648         (void)usbd_do_request(sc->sc_udev, &req, 0);
  649 }
  651 void
umodem_set(void *addr, int portno, int reg, int onoff)
  653 {
  654         struct umodem_softc *sc = addr;
  656         switch (reg) {
  657         case UCOM_SET_DTR:
umodem_dtr(sc, onoff);
  659                 break;
  660         case UCOM_SET_RTS:
umodem_rts(sc, onoff);
  662                 break;
  663         case UCOM_SET_BREAK:
umodem_break(sc, onoff);
  665                 break;
  666         default:
  667                 break;
  668         }
  669 }
usbd_status
umodem_set_line_coding(struct umodem_softc *sc, usb_cdc_line_state_t *state)
  673 {
usb_device_request_t req;
usbd_status err;
DPRINTF(("umodem_set_line_coding: rate=%d fmt=%d parity=%d bits=%d\n",
UGETDW(state->dwDTERate), state->bCharFormat,
state->bParityType, state->bDataBits));
  681         if (memcmp(state, &sc->sc_line_state, UCDC_LINE_STATE_LENGTH) == 0) {
DPRINTF(("umodem_set_line_coding: already set\n"));
  683                 return (USBD_NORMAL_COMPLETION);
  684         }
req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
req.bRequest = UCDC_SET_LINE_CODING;
USETW(req.wValue, 0);
USETW(req.wIndex, sc->sc_ctl_iface_no);
USETW(req.wLength, UCDC_LINE_STATE_LENGTH);
err = usbd_do_request(sc->sc_udev, &req, state);
  693         if (err) {
DPRINTF(("umodem_set_line_coding: failed, err=%s\n",
usbd_errstr(err)));
  696                 return (err);
  697         }
sc->sc_line_state = *state;
  701         return (USBD_NORMAL_COMPLETION);
  702 }
usbd_status
umodem_set_comm_feature(struct umodem_softc *sc, int feature, int state)
  706 {
usb_device_request_t req;
usbd_status err;
usb_cdc_abstract_state_t ast;
DPRINTF(("umodem_set_comm_feature: feature=%d state=%d\n", feature,
state));
req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
req.bRequest = UCDC_SET_COMM_FEATURE;
USETW(req.wValue, feature);
USETW(req.wIndex, sc->sc_ctl_iface_no);
USETW(req.wLength, UCDC_ABSTRACT_STATE_LENGTH);
USETW(ast.wState, state);
err = usbd_do_request(sc->sc_udev, &req, &ast);
  722         if (err) {
DPRINTF(("umodem_set_comm_feature: feature=%d, err=%s\n",
feature, usbd_errstr(err)));
  725                 return (err);
  726         }
  728         return (USBD_NORMAL_COMPLETION);
  729 }
  731 int
umodem_activate(struct device *self, enum devact act)
  733 {
  734         struct umodem_softc *sc = (struct umodem_softc *)self;
  735         int rv = 0;
  737         switch (act) {
  738         case DVACT_ACTIVATE:
  739                 break;
  741         case DVACT_DEACTIVATE:
sc->sc_dying = 1;
  743                 if (sc->sc_subdev)
rv = config_deactivate(sc->sc_subdev);
  745                 break;
  746         }
  747         return (rv);
  748 }
  750 int
umodem_detach(struct device *self, int flags)
  752 {
  753         struct umodem_softc *sc = (struct umodem_softc *)self;
  754         int rv = 0;
DPRINTF(("umodem_detach: sc=%p flags=%d\n", sc, flags));
sc->sc_dying = 1;
  760         if (sc->sc_subdev != NULL)
rv = config_detach(sc->sc_subdev, flags);
usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev,
  764                            &sc->sc_dev);
  766         return (rv);
  767 }