/* $NetBSD: umodem.c,v 1.14 1999/09/09 12:26:46 augustss Exp $ */ /* * Copyright (c) 1998 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Lennart Augustsson (augustss@carlstedt.se) at * Carlstedt Research & Technology. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /* * Comm Class spec: http://www.usb.org/developers/data/usbcdc11.pdf */ /* * TODO: * - Add error recovery in various places; the big problem is what * to do in a callback if there is an error. * - Implement a Call Device for modems without multiplexed commands. * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef USB_DEBUG #define DPRINTFN(n, x) if (umodemdebug > (n)) logprintf x int umodemdebug = 0; #else #define DPRINTFN(n, x) #endif #define DPRINTF(x) DPRINTFN(0, x) /* Macros to clear/set/test flags. */ #define SET(t, f) (t) |= (f) #define CLR(t, f) (t) &= ~((unsigned)(f)) #define ISSET(t, f) ((t) & (f)) #define UMODEMUNIT_MASK 0x3ffff #define UMODEMDIALOUT_MASK 0x80000 #define UMODEMCALLUNIT_MASK 0x40000 #define UMODEMUNIT(x) (minor(x) & UMODEMUNIT_MASK) #define UMODEMDIALOUT(x) (minor(x) & UMODEMDIALOUT_MASK) #define UMODEMCALLUNIT(x) (minor(x) & UMODEMCALLUNIT_MASK) #define UMODEMIBUFSIZE 64 struct umodem_softc { USBBASEDEVICE sc_dev; /* base device */ usbd_device_handle sc_udev; /* USB device */ int sc_ctl_iface_no; usbd_interface_handle sc_ctl_iface; /* control interface */ int sc_data_iface_no; usbd_interface_handle sc_data_iface; /* data interface */ int sc_bulkin_no; /* bulk in endpoint address */ usbd_pipe_handle sc_bulkin_pipe; /* bulk in pipe */ usbd_request_handle sc_ireqh; /* read request */ u_char *sc_ibuf; /* read buffer */ int sc_bulkout_no; /* bulk out endpoint address */ usbd_pipe_handle sc_bulkout_pipe;/* bulk out pipe */ usbd_request_handle sc_oreqh; /* read request */ int sc_cm_cap; /* CM capabilities */ int sc_acm_cap; /* ACM capabilities */ int sc_cm_over_data; struct tty *sc_tty; /* our tty */ usb_cdc_line_state_t sc_line_state; /* current line state */ u_char sc_dtr; /* current DTR state */ u_char sc_opening; /* lock during open */ u_char sc_dying; /* disconnecting */ }; cdev_decl(umodem); void *umodem_get_desc __P((usbd_device_handle dev, int type, int subtype)); usbd_status umodem_set_comm_feature __P((struct umodem_softc *sc, int feature, int state)); usbd_status umodem_set_line_coding __P((struct umodem_softc *sc, usb_cdc_line_state_t *state)); void umodem_get_caps __P((usbd_device_handle, int *, int *)); void umodem_cleanup __P((struct umodem_softc *)); int umodemparam __P((struct tty *, struct termios *)); void umodemstart __P((struct tty *)); void umodem_shutdown __P((struct umodem_softc *)); void umodem_modem __P((struct umodem_softc *, int)); void umodem_break __P((struct umodem_softc *, int)); usbd_status umodemstartread __P((struct umodem_softc *)); void umodemreadcb __P((usbd_request_handle, usbd_private_handle, usbd_status status)); void umodemwritecb __P((usbd_request_handle, usbd_private_handle, usbd_status status)); USB_DECLARE_DRIVER(umodem); USB_MATCH(umodem) { USB_MATCH_START(umodem, uaa); usb_interface_descriptor_t *id; int cm, acm; if (!uaa->iface) return (UMATCH_NONE); id = usbd_get_interface_descriptor(uaa->iface); if (id == 0 || id->bInterfaceClass != UCLASS_CDC || id->bInterfaceSubClass != USUBCLASS_ABSTRACT_CONTROL_MODEL || id->bInterfaceProtocol != UPROTO_CDC_AT) return (UMATCH_NONE); umodem_get_caps(uaa->device, &cm, &acm); if (!(cm & USB_CDC_CM_DOES_CM) || !(cm & USB_CDC_CM_OVER_DATA) || !(acm & USB_CDC_ACM_HAS_LINE)) return (UMATCH_NONE); return (UMATCH_IFACECLASS_IFACESUBCLASS_IFACEPROTO); } USB_ATTACH(umodem) { USB_ATTACH_START(umodem, sc, uaa); usbd_device_handle dev = uaa->device; usb_interface_descriptor_t *id; usb_endpoint_descriptor_t *ed; usb_cdc_cm_descriptor_t *cmd; char devinfo[1024]; usbd_status r; int data_ifaceno; int i; struct tty *tp; usbd_devinfo(uaa->device, 0, devinfo); USB_ATTACH_SETUP; 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", USBDEVNAME(sc->sc_dev), devinfo, id->bInterfaceClass, id->bInterfaceSubClass); sc->sc_ctl_iface_no = id->bInterfaceNumber; umodem_get_caps(dev, &sc->sc_cm_cap, &sc->sc_acm_cap); /* Get the data interface no. */ cmd = umodem_get_desc(dev, UDESC_CS_INTERFACE, UDESCSUB_CDC_CM); if (!cmd) { DPRINTF(("%s: no CM desc\n", USBDEVNAME(sc->sc_dev))); goto bad; } sc->sc_data_iface_no = data_ifaceno = cmd->bDataInterface; printf("%s: data interface %d, has %sCM over data, has %sbreak\n", USBDEVNAME(sc->sc_dev), data_ifaceno, sc->sc_cm_cap & USB_CDC_CM_OVER_DATA ? "" : "no ", sc->sc_acm_cap & USB_CDC_ACM_HAS_BREAK ? "" : "no "); /* Get the data interface too. */ for (i = 0; i < uaa->nifaces; i++) { if (uaa->ifaces[i]) { id = usbd_get_interface_descriptor(uaa->ifaces[i]); if (id->bInterfaceNumber == data_ifaceno) { sc->sc_data_iface = uaa->ifaces[i]; uaa->ifaces[i] = 0; } } } if (!sc->sc_data_iface) { printf("%s: no data interface\n", USBDEVNAME(sc->sc_dev)); goto bad; } /* * Find the bulk endpoints. * Iterate over all endpoints in the data interface and take note. */ sc->sc_bulkin_no = sc->sc_bulkout_no = -1; id = usbd_get_interface_descriptor(sc->sc_data_iface); for (i = 0; i < id->bNumEndpoints; i++) { ed = usbd_interface2endpoint_descriptor(sc->sc_data_iface, i); if (!ed) { printf("%s: no endpoint descriptor for %d\n", USBDEVNAME(sc->sc_dev), i); goto bad; } if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && (ed->bmAttributes & UE_XFERTYPE) == UE_BULK) { sc->sc_bulkin_no = ed->bEndpointAddress; } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && (ed->bmAttributes & UE_XFERTYPE) == UE_BULK) { sc->sc_bulkout_no = ed->bEndpointAddress; } } if (sc->sc_bulkin_no == -1) { DPRINTF(("%s: Could not find data bulk in\n", USBDEVNAME(sc->sc_dev))); goto bad; } if (sc->sc_bulkout_no == -1) { DPRINTF(("%s: Could not find data bulk out\n", USBDEVNAME(sc->sc_dev))); goto bad; } if (sc->sc_cm_cap & USB_CDC_CM_OVER_DATA) { r = umodem_set_comm_feature(sc, UCDC_ABSTRACT_STATE, UCDC_DATA_MULTIPLEXED); if (r != USBD_NORMAL_COMPLETION) goto bad; sc->sc_cm_over_data = 1; } tp = ttymalloc(); tp->t_oproc = umodemstart; tp->t_param = umodemparam; sc->sc_tty = tp; DPRINTF(("umodem_attach: tty_attach %p\n", tp)); tty_attach(tp); sc->sc_dtr = -1; USB_ATTACH_SUCCESS_RETURN; bad: sc->sc_dying = 1; USB_ATTACH_ERROR_RETURN; } void umodem_get_caps(dev, cm, acm) usbd_device_handle dev; int *cm, *acm; { usb_cdc_cm_descriptor_t *cmd; usb_cdc_acm_descriptor_t *cad; *cm = *acm = 0; cmd = umodem_get_desc(dev, UDESC_CS_INTERFACE, UDESCSUB_CDC_CM); if (!cmd) { DPRINTF(("umodem_get_desc: no CM desc\n")); return; } *cm = cmd->bmCapabilities; cad = umodem_get_desc(dev, UDESC_CS_INTERFACE, UDESCSUB_CDC_ACM); if (!cad) { DPRINTF(("umodem_get_desc: no ACM desc\n")); return; } *acm = cad->bmCapabilities; } void umodemstart(tp) struct tty *tp; { struct umodem_softc *sc = umodem_cd.cd_devs[UMODEMUNIT(tp->t_dev)]; int s; u_char *data; int cnt; if (sc->sc_dying) return; s = spltty(); if (ISSET(tp->t_state, TS_BUSY | TS_TIMEOUT | TS_TTSTOP)) { DPRINTFN(4,("umodemstart: stopped\n")); goto out; } if (tp->t_outq.c_cc <= tp->t_lowat) { if (ISSET(tp->t_state, TS_ASLEEP)) { CLR(tp->t_state, TS_ASLEEP); wakeup(&tp->t_outq); } selwakeup(&tp->t_wsel); if (tp->t_outq.c_cc == 0) goto out; } /* Grab the first contiguous region of buffer space. */ data = tp->t_outq.c_cf; cnt = ndqb(&tp->t_outq, 0); if (cnt == 0) { DPRINTF(("umodemstart: cnt==0\n")); splx(s); return; } SET(tp->t_state, TS_BUSY); DPRINTFN(4,("umodemstart: %d chars\n", cnt)); /* XXX what can we do on error? */ usbd_setup_request(sc->sc_oreqh, sc->sc_bulkout_pipe, (usbd_private_handle)sc, data, cnt, USBD_XFER_OUT, USBD_NO_TIMEOUT, umodemwritecb); (void)usbd_transfer(sc->sc_oreqh); out: splx(s); } void umodemwritecb(reqh, p, status) usbd_request_handle reqh; usbd_private_handle p; usbd_status status; { struct umodem_softc *sc = (struct umodem_softc *)p; struct tty *tp = sc->sc_tty; u_int32_t cc; int s; DPRINTFN(5,("umodemwritecb: status=%d\n", status)); if (status == USBD_CANCELLED) return; if (status != USBD_NORMAL_COMPLETION) { DPRINTF(("umodemwritecb: status=%d\n", status)); usbd_clear_endpoint_stall_async(sc->sc_bulkin_pipe); /* XXX we should restart after some delay. */ return; } usbd_get_request_status(reqh, 0, 0, &cc, 0); DPRINTFN(5,("umodemwritecb: cc=%d\n", cc)); s = spltty(); CLR(tp->t_state, TS_BUSY); if (ISSET(tp->t_state, TS_FLUSH)) CLR(tp->t_state, TS_FLUSH); else ndflush(&tp->t_outq, cc); (*linesw[tp->t_line].l_start)(tp); splx(s); } int umodemparam(tp, t) struct tty *tp; struct termios *t; { struct umodem_softc *sc = umodem_cd.cd_devs[UMODEMUNIT(tp->t_dev)]; usb_cdc_line_state_t ls; if (sc->sc_dying) return (EIO); /* Check requested parameters. */ if (t->c_ospeed < 0) return (EINVAL); if (t->c_ispeed && t->c_ispeed != t->c_ospeed) return (EINVAL); /* * If there were no changes, don't do anything. This avoids dropping * input and improves performance when all we did was frob things like * VMIN and VTIME. */ if (tp->t_ospeed == t->c_ospeed && tp->t_cflag == t->c_cflag) return (0); /* And copy to tty. */ tp->t_ispeed = 0; tp->t_ospeed = t->c_ospeed; tp->t_cflag = t->c_cflag; USETDW(ls.dwDTERate, t->c_ospeed); if (ISSET(t->c_cflag, CSTOPB)) ls.bCharFormat = UCDC_STOP_BIT_2; else ls.bCharFormat = UCDC_STOP_BIT_1; if (ISSET(t->c_cflag, PARENB)) { if (ISSET(t->c_cflag, PARODD)) ls.bParityType = UCDC_PARITY_ODD; else ls.bParityType = UCDC_PARITY_EVEN; } else ls.bParityType = UCDC_PARITY_NONE; switch (ISSET(t->c_cflag, CSIZE)) { case CS5: ls.bDataBits = 5; break; case CS6: ls.bDataBits = 6; break; case CS7: ls.bDataBits = 7; break; case CS8: ls.bDataBits = 8; break; } /* XXX what can we if it fails? */ (void)umodem_set_line_coding(sc, &ls); /* * Update the tty layer's idea of the carrier bit, in case we changed * CLOCAL or MDMBUF. We don't hang up here; we only do that by * explicit request. */ (void) (*linesw[tp->t_line].l_modem)(tp, 1 /* XXX carrier */ ); return (0); } int umodemopen(dev, flag, mode, p) dev_t dev; int flag, mode; struct proc *p; { int unit = UMODEMUNIT(dev); usbd_status r; struct umodem_softc *sc; struct tty *tp; int s; int error; if (unit >= umodem_cd.cd_ndevs) return (ENXIO); sc = umodem_cd.cd_devs[unit]; if (sc == 0) return (ENXIO); if (sc->sc_dying) return (EIO); if (ISSET(sc->sc_dev.dv_flags, DVF_ACTIVE) == 0) return (ENXIO); tp = sc->sc_tty; DPRINTF(("umodemopen: unit=%d, tp=%p\n", unit, tp)); if (ISSET(tp->t_state, TS_ISOPEN) && ISSET(tp->t_state, TS_XCLUDE) && p->p_ucred->cr_uid != 0) return (EBUSY); /* * Do the following iff this is a first open. */ s = spltty(); while (sc->sc_opening) tsleep(&sc->sc_opening, PRIBIO, "umdmop", 0); sc->sc_opening = 1; if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) { struct termios t; tp->t_dev = dev; /* * Initialize the termios status to the defaults. Add in the * sticky bits from TIOCSFLAGS. */ t.c_ispeed = 0; t.c_ospeed = TTYDEF_SPEED; t.c_cflag = TTYDEF_CFLAG; /* Make sure umodemparam() will do something. */ tp->t_ospeed = 0; (void) umodemparam(tp, &t); tp->t_iflag = TTYDEF_IFLAG; tp->t_oflag = TTYDEF_OFLAG; tp->t_lflag = TTYDEF_LFLAG; ttychars(tp); ttsetwater(tp); /* * Turn on DTR. We must always do this, even if carrier is not * present, because otherwise we'd have to use TIOCSDTR * immediately after setting CLOCAL, which applications do not * expect. We always assert DTR while the device is open * unless explicitly requested to deassert it. */ umodem_modem(sc, 1); DPRINTF(("umodemopen: open pipes\n")); /* Open the bulk pipes */ r = usbd_open_pipe(sc->sc_data_iface, sc->sc_bulkin_no, 0, &sc->sc_bulkin_pipe); if (r != USBD_NORMAL_COMPLETION) { DPRINTF(("%s: cannot open bulk out pipe (addr %d)\n", USBDEVNAME(sc->sc_dev), sc->sc_bulkin_no)); return (EIO); } r = usbd_open_pipe(sc->sc_data_iface, sc->sc_bulkout_no, USBD_EXCLUSIVE_USE, &sc->sc_bulkout_pipe); if (r != USBD_NORMAL_COMPLETION) { DPRINTF(("%s: cannot open bulk in pipe (addr %d)\n", USBDEVNAME(sc->sc_dev), sc->sc_bulkout_no)); usbd_close_pipe(sc->sc_bulkin_pipe); return (EIO); } /* Allocate a request and an input buffer and start reading. */ sc->sc_ireqh = usbd_alloc_request(sc->sc_udev); if (sc->sc_ireqh == 0) { usbd_close_pipe(sc->sc_bulkin_pipe); usbd_close_pipe(sc->sc_bulkout_pipe); return (ENOMEM); } sc->sc_oreqh = usbd_alloc_request(sc->sc_udev); if (sc->sc_oreqh == 0) { usbd_close_pipe(sc->sc_bulkin_pipe); usbd_close_pipe(sc->sc_bulkout_pipe); usbd_free_request(sc->sc_ireqh); return (ENOMEM); } sc->sc_ibuf = malloc(UMODEMIBUFSIZE, M_USBDEV, M_WAITOK); umodemstartread(sc); } sc->sc_opening = 0; wakeup(&sc->sc_opening); splx(s); error = ttyopen(tp, UMODEMDIALOUT(dev), ISSET(flag, O_NONBLOCK)); if (error) goto bad; error = (*linesw[tp->t_line].l_open)(dev, tp); if (error) goto bad; return (0); bad: if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) { /* * We failed to open the device, and nobody else had it opened. * Clean up the state as appropriate. */ umodem_cleanup(sc); } return (error); } usbd_status umodemstartread(sc) struct umodem_softc *sc; { usbd_status r; DPRINTFN(5,("umodemstartread: start\n")); usbd_setup_request(sc->sc_ireqh, sc->sc_bulkin_pipe, (usbd_private_handle)sc, sc->sc_ibuf, UMODEMIBUFSIZE, USBD_XFER_IN | USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, umodemreadcb); r = usbd_transfer(sc->sc_ireqh); if (r != USBD_IN_PROGRESS) return (r); return (USBD_NORMAL_COMPLETION); } void umodemreadcb(reqh, p, status) usbd_request_handle reqh; usbd_private_handle p; usbd_status status; { struct umodem_softc *sc = (struct umodem_softc *)p; struct tty *tp = sc->sc_tty; int (*rint) __P((int c, struct tty *tp)) = linesw[tp->t_line].l_rint; usbd_status r; u_int32_t cc; u_char *cp; int s; if (status == USBD_CANCELLED) return; if (status != USBD_NORMAL_COMPLETION) { DPRINTF(("umodemreadcb: status=%d\n", status)); usbd_clear_endpoint_stall_async(sc->sc_bulkin_pipe); /* XXX we should restart after some delay. */ return; } usbd_get_request_status(reqh, 0, (void **)&cp, &cc, 0); DPRINTFN(5,("umodemreadcb: got %d chars, tp=%p\n", cc, tp)); s = spltty(); /* Give characters to tty layer. */ while (cc-- > 0) { DPRINTFN(7,("umodemreadcb: char=0x%02x\n", *cp)); if ((*rint)(*cp++, tp) == -1) { /* XXX what should we do? */ break; } } splx(s); r = umodemstartread(sc); if (r != USBD_NORMAL_COMPLETION) { printf("%s: read start failed\n", USBDEVNAME(sc->sc_dev)); /* XXX what should we dow now? */ } } int umodemclose(dev, flag, mode, p) dev_t dev; int flag, mode; struct proc *p; { struct umodem_softc *sc = umodem_cd.cd_devs[UMODEMUNIT(dev)]; struct tty *tp = sc->sc_tty; DPRINTF(("umodemclose: unit=%d\n", UMODEMUNIT(dev))); if (!ISSET(tp->t_state, TS_ISOPEN)) return (0); (*linesw[tp->t_line].l_close)(tp, flag); ttyclose(tp); if (sc->sc_dying) return (0); if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) { /* * Although we got a last close, the device may still be in * use; e.g. if this was the dialout node, and there are still * processes waiting for carrier on the non-dialout node. */ umodem_cleanup(sc); } return (0); } void umodem_cleanup(sc) struct umodem_softc *sc; { umodem_shutdown(sc); DPRINTF(("umodem_cleanup: closing pipes\n")); usbd_abort_pipe(sc->sc_bulkin_pipe); usbd_close_pipe(sc->sc_bulkin_pipe); usbd_abort_pipe(sc->sc_bulkout_pipe); usbd_close_pipe(sc->sc_bulkout_pipe); usbd_free_request(sc->sc_ireqh); usbd_free_request(sc->sc_oreqh); free(sc->sc_ibuf, M_USBDEV); } int umodemread(dev, uio, flag) dev_t dev; struct uio *uio; int flag; { struct umodem_softc *sc = umodem_cd.cd_devs[UMODEMUNIT(dev)]; struct tty *tp = sc->sc_tty; if (sc->sc_dying) return (EIO); return ((*linesw[tp->t_line].l_read)(tp, uio, flag)); } int umodemwrite(dev, uio, flag) dev_t dev; struct uio *uio; int flag; { struct umodem_softc *sc = umodem_cd.cd_devs[UMODEMUNIT(dev)]; struct tty *tp = sc->sc_tty; if (sc->sc_dying) return (EIO); return ((*linesw[tp->t_line].l_write)(tp, uio, flag)); } void umodemstop(tp, flag) struct tty *tp; int flag; { /*struct umodem_softc *sc = umodem_cd.cd_devs[UMODEMUNIT(tp->t_dev)];*/ int s; DPRINTF(("umodemstop: %d\n", flag)); s = spltty(); if (ISSET(tp->t_state, TS_BUSY)) { DPRINTF(("umodemstop: XXX\n")); /* XXX do what? */ if (!ISSET(tp->t_state, TS_TTSTOP)) SET(tp->t_state, TS_FLUSH); } splx(s); } struct tty * umodemtty(dev) dev_t dev; { struct umodem_softc *sc = umodem_cd.cd_devs[UMODEMUNIT(dev)]; struct tty *tp = sc->sc_tty; return (tp); } int umodemioctl(dev, cmd, data, flag, p) dev_t dev; u_long cmd; caddr_t data; int flag; struct proc *p; { struct umodem_softc *sc = umodem_cd.cd_devs[UMODEMUNIT(dev)]; struct tty *tp = sc->sc_tty; int error; int s; if (sc->sc_dying) return (EIO); DPRINTF(("umodemioctl: cmd=0x%08lx\n", cmd)); error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p); if (error >= 0) return (error); error = ttioctl(tp, cmd, data, flag, p); if (error >= 0) return (error); error = 0; DPRINTF(("umodemioctl: our cmd=0x%08lx\n", cmd)); s = spltty(); switch (cmd) { case TIOCSBRK: umodem_break(sc, 1); break; case TIOCCBRK: umodem_break(sc, 0); break; case TIOCSDTR: umodem_modem(sc, 1); break; case TIOCCDTR: umodem_modem(sc, 0); break; case USB_GET_CM_OVER_DATA: *(int *)data = sc->sc_cm_over_data; break; case USB_SET_CM_OVER_DATA: if (*(int *)data != sc->sc_cm_over_data) { /* XXX change it */ } break; default: DPRINTF(("umodemioctl: unknown\n")); error = ENOTTY; break; } splx(s); return (error); } void umodem_shutdown(sc) struct umodem_softc *sc; { struct tty *tp = sc->sc_tty; DPRINTF(("umodem_shutdown\n")); /* * Hang up if necessary. Wait a bit, so the other side has time to * notice even if we immediately open the port again. */ if (ISSET(tp->t_cflag, HUPCL)) { umodem_modem(sc, 0); (void) tsleep(sc, TTIPRI, ttclos, hz); } } void umodem_modem(sc, onoff) struct umodem_softc *sc; int onoff; { usb_device_request_t req; DPRINTF(("umodem_modem: onoff=%d\n", onoff)); if (sc->sc_dtr == onoff) return; req.bmRequestType = UT_WRITE_CLASS_INTERFACE; req.bRequest = UCDC_SET_CONTROL_LINE_STATE; USETW(req.wValue, onoff ? UCDC_LINE_DTR : 0); USETW(req.wIndex, sc->sc_ctl_iface_no); USETW(req.wLength, 0); (void)usbd_do_request(sc->sc_udev, &req, 0); sc->sc_dtr = onoff; } void umodem_break(sc, onoff) struct umodem_softc *sc; int onoff; { usb_device_request_t req; DPRINTF(("umodem_break: onoff=%d\n", onoff)); if (!(sc->sc_acm_cap & USB_CDC_ACM_HAS_BREAK)) 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); (void)usbd_do_request(sc->sc_udev, &req, 0); } void * umodem_get_desc(dev, type, subtype) usbd_device_handle dev; int type; int subtype; { usb_descriptor_t *desc; usb_config_descriptor_t *cd = usbd_get_config_descriptor(dev); uByte *p = (uByte *)cd; uByte *end = p + UGETW(cd->wTotalLength); while (p < end) { desc = (usb_descriptor_t *)p; if (desc->bDescriptorType == type && desc->bDescriptorSubtype == subtype) return (desc); p += desc->bLength; } return (0); } usbd_status umodem_set_comm_feature(sc, feature, state) struct umodem_softc *sc; int feature; int state; { usb_device_request_t req; usbd_status r; usb_cdc_abstract_state_t ast; 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); r = usbd_do_request(sc->sc_udev, &req, &ast); if (r != USBD_NORMAL_COMPLETION) { DPRINTF(("umodem_set_comm_feature: feature=%d failed, r=%d\n", feature, r)); return (r); } return (USBD_NORMAL_COMPLETION); } usbd_status umodem_set_line_coding(sc, state) struct umodem_softc *sc; usb_cdc_line_state_t *state; { usb_device_request_t req; usbd_status r; DPRINTF(("umodem_set_line_coding: rate=%d fmt=%d parity=%d bits=%d\n", UGETDW(state->dwDTERate), state->bCharFormat, state->bParityType, state->bDataBits)); if (memcmp(state, &sc->sc_line_state, UCDC_LINE_STATE_LENGTH) == 0) { DPRINTF(("umodem_set_line_coding: already set\n")); return (USBD_NORMAL_COMPLETION); } 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); r = usbd_do_request(sc->sc_udev, &req, state); if (r != USBD_NORMAL_COMPLETION) { DPRINTF(("umodem_set_line_coding: failed, r=%d\n", r)); return (r); } sc->sc_line_state = *state; return (USBD_NORMAL_COMPLETION); } int umodem_activate(self, act) device_ptr_t self; enum devact act; { struct umodem_softc *sc = (struct umodem_softc *)self; switch (act) { case DVACT_ACTIVATE: return (EOPNOTSUPP); break; case DVACT_DEACTIVATE: sc->sc_dying = 1; break; } return (0); } int umodem_detach(self, flags) device_ptr_t self; int flags; { struct umodem_softc *sc = (struct umodem_softc *)self; int maj, mn; DPRINTF(("umodem_detach: sc=%p flags=%d tp=%p\n", sc, flags, sc->sc_tty)); sc->sc_dying = 1; #ifdef DIAGNOSTIC if (sc->sc_tty == 0) { DPRINTF(("umodem_detach: no tty\n")); return (0); } #endif /* use refernce count? XXX */ /* locate the major number */ for (maj = 0; maj < nchrdev; maj++) if (cdevsw[maj].d_open == umodemopen) break; /* Nuke the vnodes for any open instances. */ mn = self->dv_unit; vdevgone(maj, mn, mn, VCHR); vdevgone(maj, mn, mn | UMODEMDIALOUT_MASK, VCHR); vdevgone(maj, mn, mn | UMODEMCALLUNIT_MASK, VCHR); /* Detach and free the tty. */ tty_detach(sc->sc_tty); ttyfree(sc->sc_tty); sc->sc_tty = 0; return (0); }