/* * Copyright (c) 2004 Bernd Walter * * $URL: https://devel.bwct.de/svn/projects/ubser/ubser.c $ * $Date: 2004-02-29 01:53:10 +0100 (Sun, 29 Feb 2004) $ * $Author: ticso $ * $Rev: 1127 $ */ /*- * Copyright (c) 2001-2002, Shunsuke Akiyama . * All rights reserved. * * 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. */ /* * Copyright (c) 2000 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Lennart Augustsson (lennart@augustsson.net). * * 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. */ #include __FBSDID("$FreeBSD$"); /* * BWCT serial adapter driver */ #include #include #include #include #include #include #include #include #include #include #include #include #include #if __FreeBSD_version >= 500014 #include #else #include #endif #include #include #include #include #include #include "usbdevs.h" #include #ifdef USB_DEBUG static int ubserdebug = 0; SYSCTL_NODE(_hw_usb, OID_AUTO, ubser, CTLFLAG_RW, 0, "USB ubser"); SYSCTL_INT(_hw_usb_ubser, OID_AUTO, debug, CTLFLAG_RW, &ubserdebug, 0, "ubser debug level"); #define DPRINTF(x) do { \ if (ubserdebug) \ logprintf x; \ } while (0) #define DPRINTFN(n, x) do { \ if (ubserdebug > (n)) \ logprintf x; \ } while (0) #else #define DPRINTF(x) #define DPRINTFN(n,x) #endif #define ISSET(t, f) ((t) & (f)) #define SET(t, f) (t) |= (f) #define CLR(t, f) (t) &= ~((unsigned)(f)) struct ubser_softc { USBBASEDEVICE sc_dev; usbd_device_handle sc_udev; usbd_interface_handle sc_iface; /* data interface */ int sc_ifaceno; int sc_refcnt; u_char sc_dying; u_char sc_opening; int sc_state; uint8_t sc_numser; int sc_bulkin_no; /* bulk in endpoint address */ usbd_pipe_handle sc_bulkin_pipe; /* bulk in pipe */ usbd_xfer_handle sc_ixfer; /* read request */ u_char *sc_ibuf; /* read buffer */ u_int sc_ibufsize; /* read buffer size */ u_int sc_ibufsizepad; /* read buffer size padded */ int sc_bulkout_no; /* bulk out endpoint address */ usbd_pipe_handle sc_bulkout_pipe;/* bulk out pipe */ usbd_xfer_handle sc_oxfer[8]; /* write request */ u_char *sc_obuf[8]; /* write buffer */ u_int sc_obufsize; /* write buffer size */ u_int sc_opkthdrlen; /* header length of output packet */ struct cdev *dev[8]; }; Static d_open_t ubser_open; Static d_close_t ubser_close; Static d_read_t ubser_read; Static d_write_t ubser_write; Static d_ioctl_t ubser_ioctl; Static int ubserparam(struct tty *, struct termios *); Static void ubserstart(struct tty *); Static void ubserstop(struct tty *, int); Static usbd_status ubserstartread(struct ubser_softc *); Static void ubserreadcb(usbd_xfer_handle, usbd_private_handle, usbd_status); Static void ubserwritecb(usbd_xfer_handle, usbd_private_handle, usbd_status); Static void ubser_cleanup(struct ubser_softc *sc); static struct cdevsw ubser_cdevsw = { #if __FreeBSD_version > 502102 .d_version = D_VERSION, #endif .d_open = ubser_open, .d_close = ubser_close, .d_read = ubser_read, .d_write = ubser_write, .d_ioctl = ubser_ioctl, #if __FreeBSD_version < 502103 .d_poll = ttypoll, .d_kqfilter = ttykqfilter, #endif .d_name = "ubser", #if __FreeBSD_version > 502102 .d_flags = D_TTY | D_NEEDGIANT, #else .d_flags = D_TTY, #endif #if __FreeBSD_version < 500014 .d_bmaj = -1, #endif }; USB_DECLARE_DRIVER(ubser); USB_MATCH(ubser) { USB_MATCH_START(ubser, uaa); usb_string_descriptor_t us; usb_interface_descriptor_t *id; usb_device_descriptor_t *dd; int err, size; if (uaa->iface == NULL) return (UMATCH_NONE); DPRINTFN(20,("ubser: vendor=0x%x, product=0x%x\n", uaa->vendor, uaa->product)); dd = usbd_get_device_descriptor(uaa->device); if (dd == NULL) { printf("ubser: failed to get device descriptor\n"); return (UMATCH_NONE); } id = usbd_get_interface_descriptor(uaa->iface); if (id == NULL) { printf("ubser: failed to get interface descriptor\n"); return (UMATCH_NONE); } err = usbd_get_string_desc(uaa->device, dd->iManufacturer, 0, &us, &size); if (err != 0) return (UMATCH_NONE); /* check if this is a BWCT vendor specific ubser interface */ if (strcmp((char*)us.bString, "B\0W\0C\0T\0") == 0 && id->bInterfaceClass == 0xff && id->bInterfaceSubClass == 0x00) return (UMATCH_VENDOR_IFACESUBCLASS); return (UMATCH_NONE); } USB_ATTACH(ubser) { USB_ATTACH_START(ubser, sc, uaa); usbd_device_handle udev = uaa->device; usb_endpoint_descriptor_t *ed; usb_interface_descriptor_t *id; usb_device_request_t req; char *devinfo; struct tty *tp; usbd_status err; int i; int alen; uint8_t epcount; devinfo = malloc(1024, M_USBDEV, M_WAITOK); usbd_devinfo(udev, 0, devinfo); USB_ATTACH_SETUP; DPRINTFN(10,("\nubser_attach: sc=%p\n", sc)); sc->sc_udev = udev = uaa->device; sc->sc_iface = uaa->iface; for (i = 0; i < 8; i++) { sc->dev[i] = NULL; } /* get interface index */ id = usbd_get_interface_descriptor(uaa->iface); if (id == NULL) { printf("ubser: failed to get interface descriptor\n"); return (UMATCH_NONE); } sc->sc_ifaceno = id->bInterfaceNumber; /* get number of serials */ req.bmRequestType = UT_READ_VENDOR_INTERFACE; req.bRequest = VENDOR_GET_NUMSER; USETW(req.wValue, 0); USETW(req.wIndex, sc->sc_ifaceno); USETW(req.wLength, 1); err = usbd_do_request_flags(udev, &req, &sc->sc_numser, USBD_SHORT_XFER_OK, &alen, USBD_DEFAULT_TIMEOUT); if (err) { printf("%s: cannot get number of serials\n", USBDEVNAME(sc->sc_dev)); goto bad; } else if (alen != 1) { printf("%s: bogus answer on get_numser\n", USBDEVNAME(sc->sc_dev)); goto bad; } if (sc->sc_numser > 8) sc->sc_numser = 8; printf("%s: found %i serials\n", USBDEVNAME(sc->sc_dev), sc->sc_numser); sc->sc_ibufsize = 7; sc->sc_ibufsizepad = 8; sc->sc_obufsize = 7; sc->sc_opkthdrlen = 1; for (i = 0; i < sc->sc_numser; i++) { sc->dev[i] = NULL; } for (i = 0; i < sc->sc_numser; i++) { sc->dev[i] = make_dev(&ubser_cdevsw, USBDEVUNIT(sc->sc_dev) * 8 + i, UID_UUCP, GID_DIALER, 0660, "%s.%d", USBDEVNAME(sc->sc_dev), i); if (sc->dev[i] == NULL) { printf("%s: make_dev failed\n", USBDEVNAME(sc->sc_dev)); goto bad; } sc->dev[i]->si_tty = tp = ttymalloc(NULL); if (sc->dev[i]->si_tty == NULL) { printf("%s: ttymalloc failed\n", USBDEVNAME(sc->sc_dev)); goto bad; } DPRINTF(("ubser_attach: tty_attach tp = %p\n", tp)); tp->t_oproc = ubserstart; tp->t_param = ubserparam; tp->t_stop = ubserstop; } /* find our bulk endpoints */ epcount = 0; usbd_endpoint_count(sc->sc_iface, &epcount); sc->sc_bulkin_no = -1; sc->sc_bulkout_no = -1; for (i = 0; i < epcount; i++) { ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); if (ed == NULL) { printf("%s: couldn't get ep %d\n", USBDEVNAME(sc->sc_dev), i); USB_ATTACH_ERROR_RETURN; } if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { sc->sc_bulkin_no = ed->bEndpointAddress; } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { sc->sc_bulkout_no = ed->bEndpointAddress; } } if (sc->sc_bulkin_no == -1) { printf("%s: could not find bulk in endpoint\n", USBDEVNAME(sc->sc_dev)); sc->sc_dying = 1; USB_ATTACH_ERROR_RETURN; } if (sc->sc_bulkout_no == -1) { printf("%s: could not find bulk out endpoint\n", USBDEVNAME(sc->sc_dev)); sc->sc_dying = 1; USB_ATTACH_ERROR_RETURN; } /* Open the bulk pipes */ /* Bulk-in pipe */ err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkin_no, 0, &sc->sc_bulkin_pipe); if (err) { printf("%s: open bulk in error (addr %d): %s\n", USBDEVNAME(sc->sc_dev), sc->sc_bulkin_no, usbd_errstr(err)); goto fail_0; } /* Bulk-out pipe */ err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkout_no, USBD_EXCLUSIVE_USE, &sc->sc_bulkout_pipe); if (err) { printf("%s: open bulk out error (addr %d): %s\n", USBDEVNAME(sc->sc_dev), sc->sc_bulkout_no, usbd_errstr(err)); goto fail_1; } /* Allocate a request and an input buffer and start reading. */ sc->sc_ixfer = usbd_alloc_xfer(sc->sc_udev); if (sc->sc_ixfer == NULL) { goto fail_2; } sc->sc_ibuf = usbd_alloc_buffer(sc->sc_ixfer, sc->sc_ibufsizepad); if (sc->sc_ibuf == NULL) { goto fail_3; } for (i = 0; i < 8; i++) { sc->sc_oxfer[i] = NULL; sc->sc_obuf[i] = NULL; } for (i = 0; i < sc->sc_numser; i++) { sc->sc_oxfer[i] = usbd_alloc_xfer(sc->sc_udev); if (sc->sc_oxfer[i] == NULL) { goto fail_4; } sc->sc_obuf[i] = usbd_alloc_buffer(sc->sc_oxfer[i], sc->sc_obufsize + sc->sc_opkthdrlen); if (sc->sc_obuf[i] == NULL) { goto fail_4; } } ubserstartread(sc); free(devinfo, M_USBDEV); USB_ATTACH_SUCCESS_RETURN; fail_4: for (i = 0; i < sc->sc_numser; i++) { if (sc->sc_oxfer[i] != NULL) { usbd_free_xfer(sc->sc_oxfer[i]); sc->sc_oxfer[i] = NULL; } } fail_3: usbd_free_xfer(sc->sc_ixfer); sc->sc_ixfer = NULL; fail_2: usbd_close_pipe(sc->sc_bulkout_pipe); sc->sc_bulkout_pipe = NULL; fail_1: usbd_close_pipe(sc->sc_bulkin_pipe); sc->sc_bulkin_pipe = NULL; fail_0: sc->sc_opening = 0; wakeup(&sc->sc_opening); bad: ubser_cleanup(sc); for (i = 0; i < 8; i++) { if (sc->dev[i] != NULL) { tp = sc->dev[i]->si_tty; if (tp != NULL) { if (tp->t_state & TS_ISOPEN) { ttyld_close(tp, 0); tty_close(tp); } } destroy_dev(sc->dev[i]); } } DPRINTF(("ubser_attach: ATTACH ERROR\n")); free(devinfo, M_USBDEV); USB_ATTACH_ERROR_RETURN; } USB_DETACH(ubser) { USB_DETACH_START(ubser, sc); int i, s; struct tty *tp; DPRINTF(("ubser_detach: sc=%p\n", sc)); sc->sc_dying = 1; if (sc->sc_bulkin_pipe != NULL) usbd_abort_pipe(sc->sc_bulkin_pipe); if (sc->sc_bulkout_pipe != NULL) usbd_abort_pipe(sc->sc_bulkout_pipe); for (i = 0; i < 8; i++) { if (sc->dev[i] != NULL) { tp = sc->dev[i]->si_tty; if (tp != NULL) { if (tp->t_state & TS_ISOPEN) { ttyld_close(tp, 0); tty_close(tp); } } destroy_dev(sc->dev[i]); } } s = splusb(); if (--sc->sc_refcnt >= 0) { /* Wait for processes to go away. */ usb_detach_wait(USBDEV(sc->sc_dev)); } splx(s); return (0); } Static int ubserparam(struct tty *tp, struct termios *t) { struct ubser_softc *sc; USB_GET_SC(ubser, dev2unit(tp->t_dev) / 8, sc); if (sc->sc_dying) return (EIO); DPRINTF(("ubserparam: sc = %p\n", sc)); /* * The firmware on our devices can only do 8n1@9600bps * without handshake. * We refuse to accept other configurations. */ /* enshure 9600bps */ switch (t->c_ospeed) { case 9600: break; default: return (EINVAL); } /* 2 stop bits not possible */ if (ISSET(t->c_cflag, CSTOPB)) return (EINVAL); /* XXX parity handling not possible with current firmware */ if (ISSET(t->c_cflag, PARENB)) return (EINVAL); /* we can only do 8 data bits */ switch (ISSET(t->c_cflag, CSIZE)) { case CS8: break; default: return (EINVAL); } /* we can't do any kind of hardware handshaking */ if ((t->c_cflag & (CRTS_IFLOW | CDTR_IFLOW |CDSR_OFLOW |CCAR_OFLOW)) != 0) return (EINVAL); /* * XXX xon/xoff not supported by the firmware! * This is handled within FreeBSD only and may overflow buffers * because of delayed reaction due to device buffering. */ ttsetwater(tp); return (0); } Static void ubserstart(struct tty *tp) { struct ubser_softc *sc; struct cblock *cbp; usbd_status err; int s; u_char *data; int cnt; uint8_t serial; USB_GET_SC(ubser, dev2unit(tp->t_dev) / 8, sc); serial = dev2unit(tp->t_dev) & 0x07; DPRINTF(("ubserstart: sc = %p, tp = %p\n", sc, tp)); if (sc->sc_dying) return; s = spltty(); if (ISSET(tp->t_state, TS_BUSY | TS_TIMEOUT | TS_TTSTOP)) { ttwwakeup(tp); DPRINTF(("ubserstart: stopped\n")); goto out; } if (tp->t_outq.c_cc <= tp->t_olowat) { if (ISSET(tp->t_state, TS_SO_OLOWAT)) { CLR(tp->t_state, TS_SO_OLOWAT); wakeup(TSA_OLOWAT(tp)); } selwakeuppri(&tp->t_wsel, TTIPRI); if (tp->t_outq.c_cc == 0) { if (ISSET(tp->t_state, TS_BUSY | TS_SO_OCOMPLETE) == TS_SO_OCOMPLETE && tp->t_outq.c_cc == 0) { CLR(tp->t_state, TS_SO_OCOMPLETE); wakeup(TSA_OCOMPLETE(tp)); } goto out; } } /* Grab the first contiguous region of buffer space. */ data = tp->t_outq.c_cf; cbp = (struct cblock *) ((intptr_t) tp->t_outq.c_cf & ~CROUND); cnt = min((char *) (cbp+1) - tp->t_outq.c_cf, tp->t_outq.c_cc); if (cnt == 0) { DPRINTF(("ubserstart: cnt == 0\n")); goto out; } SET(tp->t_state, TS_BUSY); if (cnt + sc->sc_opkthdrlen > sc->sc_obufsize) { DPRINTF(("ubserstart: big buffer %d chars\n", cnt)); cnt = sc->sc_obufsize; } sc->sc_obuf[serial][0] = serial; memcpy(sc->sc_obuf[serial] + sc->sc_opkthdrlen, data, cnt); DPRINTF(("ubserstart: %d chars\n", cnt)); usbd_setup_xfer(sc->sc_oxfer[serial], sc->sc_bulkout_pipe, (usbd_private_handle)tp, sc->sc_obuf[serial], cnt + sc->sc_opkthdrlen, USBD_NO_COPY, USBD_NO_TIMEOUT, ubserwritecb); /* What can we do on error? */ err = usbd_transfer(sc->sc_oxfer[serial]); if (err != USBD_IN_PROGRESS) printf("ubserstart: err=%s\n", usbd_errstr(err)); ttwwakeup(tp); out: splx(s); } Static void ubserstop(struct tty *tp, int flag) { struct ubser_softc *sc; int s; USB_GET_SC(ubser, dev2unit(tp->t_dev) / 8, sc); DPRINTF(("ubserstop: %d\n", flag)); if (flag & FWRITE) { DPRINTF(("ubserstop: write\n")); s = spltty(); if (ISSET(tp->t_state, TS_BUSY)) { /* XXX do what? */ if (!ISSET(tp->t_state, TS_TTSTOP)) SET(tp->t_state, TS_FLUSH); } splx(s); } DPRINTF(("ubserstop: done\n")); } Static void ubserwritecb(usbd_xfer_handle xfer, usbd_private_handle p, usbd_status status) { struct tty *tp; struct ubser_softc *sc; u_int32_t cc; int s; tp = (struct tty *)p; USB_GET_SC(ubser, dev2unit(tp->t_dev) / 8, sc); DPRINTF(("ubserwritecb: status = %d\n", status)); if (status == USBD_CANCELLED || sc->sc_dying) goto error; if (status != USBD_NORMAL_COMPLETION) { printf("%s: ubserwritecb: %s\n", USBDEVNAME(sc->sc_dev), usbd_errstr(status)); if (status == USBD_STALLED) usbd_clear_endpoint_stall_async(sc->sc_bulkin_pipe); /* XXX we should restart after some delay. */ goto error; } usbd_get_xfer_status(xfer, NULL, NULL, &cc, NULL); DPRINTF(("ubserwritecb: cc = %d\n", cc)); if (cc <= sc->sc_opkthdrlen) { printf("%s: sent size too small, cc = %d\n", USBDEVNAME(sc->sc_dev), cc); goto error; } /* convert from USB bytes to tty bytes */ cc -= sc->sc_opkthdrlen; 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); ttyld_start(tp); splx(s); return; error: s = spltty(); CLR(tp->t_state, TS_BUSY); splx(s); return; } Static usbd_status ubserstartread(struct ubser_softc *sc) { usbd_status err; DPRINTF(("ubserstartread: start\n")); if (sc->sc_bulkin_pipe == NULL) return (USBD_NORMAL_COMPLETION); usbd_setup_xfer(sc->sc_ixfer, sc->sc_bulkin_pipe, (usbd_private_handle)sc, sc->sc_ibuf, sc->sc_ibufsizepad, USBD_SHORT_XFER_OK | USBD_NO_COPY, USBD_NO_TIMEOUT, ubserreadcb); err = usbd_transfer(sc->sc_ixfer); if (err != USBD_IN_PROGRESS) { DPRINTF(("ubserstartread: err = %s\n", usbd_errstr(err))); return (err); } return (USBD_NORMAL_COMPLETION); } Static void ubserreadcb(usbd_xfer_handle xfer, usbd_private_handle p, usbd_status status) { struct ubser_softc *sc = (struct ubser_softc *)p; struct tty *tp; usbd_status err; u_int32_t cc; u_char *cp; int lostcc; int s; DPRINTF(("ubserreadcb: status = %d\n", status)); if (status != USBD_NORMAL_COMPLETION) { printf("%s: ubserreadcb: %s\n", USBDEVNAME(sc->sc_dev), usbd_errstr(status)); if (status == USBD_STALLED) usbd_clear_endpoint_stall_async(sc->sc_bulkin_pipe); /* XXX we should restart after some delay. */ return; } usbd_get_xfer_status(xfer, NULL, (void **)&cp, &cc, NULL); DPRINTF(("ubserreadcb: got %d bytes from device\n", cc)); if (cc == 0) goto resubmit; if (cc > sc->sc_ibufsizepad) { printf("%s: invalid receive data size, %d chars\n", USBDEVNAME(sc->sc_dev), cc); goto resubmit; } /* parse header */ if (cc < 1) goto resubmit; DPRINTF(("ubserreadcb: got %d chars for serial %d\n", cc - 1, *cp)); tp = sc->dev[*cp]->si_tty; cp++; cc--; if (cc < 1) goto resubmit; if (!(tp->t_state & TS_ISOPEN)) /* drop data for unused serials */ goto resubmit; s = spltty(); if (tp->t_state & TS_CAN_BYPASS_L_RINT) { if (tp->t_rawq.c_cc + cc > tp->t_ihiwat && (tp->t_iflag & IXOFF) && !(tp->t_state & TS_TBLOCK)) ttyblock(tp); lostcc = b_to_q((char *)cp, cc, &tp->t_rawq); tp->t_rawcc += cc; ttwakeup(tp); if (tp->t_state & TS_TTSTOP && (tp->t_iflag & IXANY || tp->t_cc[VSTART] == tp->t_cc[VSTOP])) { tp->t_state &= ~TS_TTSTOP; tp->t_lflag &= ~FLUSHO; ubserstart(tp); } if (lostcc > 0) printf("%s: lost %d chars\n", USBDEVNAME(sc->sc_dev), lostcc); } else { /* Give characters to tty layer. */ while (cc > 0) { DPRINTFN(7, ("ubserreadcb: char = 0x%02x\n", *cp)); if (ttyld_rint(tp, *cp) == -1) { /* XXX what should we do? */ printf("%s: lost %d chars\n", USBDEVNAME(sc->sc_dev), cc); break; } cc--; cp++; } } splx(s); resubmit: err = ubserstartread(sc); if (err) { printf("%s: read start failed\n", USBDEVNAME(sc->sc_dev)); /* XXX what should we do now? */ } } Static void ubser_cleanup(struct ubser_softc *sc) { int i; DPRINTF(("ubser_cleanup: closing pipes\n")); if (sc->sc_bulkin_pipe != NULL) { usbd_abort_pipe(sc->sc_bulkin_pipe); usbd_close_pipe(sc->sc_bulkin_pipe); sc->sc_bulkin_pipe = NULL; } if (sc->sc_bulkout_pipe != NULL) { usbd_abort_pipe(sc->sc_bulkout_pipe); usbd_close_pipe(sc->sc_bulkout_pipe); sc->sc_bulkout_pipe = NULL; } if (sc->sc_ixfer != NULL) { usbd_free_xfer(sc->sc_ixfer); sc->sc_ixfer = NULL; } for (i = 0; i < sc->sc_numser; i++) { if (sc->sc_oxfer[i] != NULL) { usbd_free_xfer(sc->sc_oxfer[i]); sc->sc_oxfer[i] = NULL; } } } static int ubser_open(struct cdev *dev, int flag, int mode, usb_proc_ptr p) { struct ubser_softc *sc; struct tty *tp; int s; int error; USB_GET_SC(ubser, dev2unit(dev) / 8, sc); if (sc->sc_dying) return (ENXIO); tp = sc->dev[dev2unit(dev) & 0x07]->si_tty; DPRINTF(("%s: ubser_open: tp = %p\n", USBDEVNAME(sc->sc_dev), tp)); if (ISSET(tp->t_state, TS_ISOPEN) && ISSET(tp->t_state, TS_XCLUDE) && suser(p)) return (EBUSY); /* * Do the following if this is a first open. */ s = spltty(); while (sc->sc_opening) tsleep(&sc->sc_opening, PRIBIO, "ubser_op", 0); sc->sc_opening = 1; if (!ISSET(tp->t_state, TS_ISOPEN)) { tp->t_dev = dev; /* * Initialize the termios status to the defaults. Add in the * sticky bits from TIOCSFLAGS. */ tp->t_iflag = TTYDEF_IFLAG; tp->t_oflag = TTYDEF_OFLAG; tp->t_lflag = TTYDEF_LFLAG; ttychars(tp); ttsetwater(tp); /* * Handle initial DCD. */ ttyld_modem(tp, 1); } sc->sc_refcnt++; /* XXX: wrong refcnt on error later on */ sc->sc_opening = 0; wakeup(&sc->sc_opening); splx(s); error = tty_open(dev, tp); if (error) goto bad; error = ttyld_open(tp, dev); if (error) goto bad; DPRINTF(("%s: ubser_open: success\n", USBDEVNAME(sc->sc_dev))); return (0); sc->sc_opening = 0; wakeup(&sc->sc_opening); splx(s); return (error); bad: DPRINTF(("%s: ubser_open: failed\n", USBDEVNAME(sc->sc_dev))); return (error); } static int ubser_close(struct cdev *dev, int flag, int mode, usb_proc_ptr p) { struct ubser_softc *sc; struct tty *tp; USB_GET_SC(ubser, dev2unit(dev) / 8, sc); tp = sc->dev[dev2unit(dev) & 0x07]->si_tty; DPRINTF(("%s: ubserclose\n", USBDEVNAME(sc->sc_dev))); if (!ISSET(tp->t_state, TS_ISOPEN)) goto quit; if (sc->sc_dying) goto quit; quit: if (--sc->sc_refcnt < 0) usb_detach_wakeup(USBDEV(sc->sc_dev)); return (0); } static int ubser_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int flag, usb_proc_ptr p) { usb_device_request_t req; struct ubser_softc *sc; struct tty *tp; int error; int s; int alen; USB_GET_SC(ubser, dev2unit(dev) / 8, sc); tp = sc->dev[dev2unit(dev) & 0x07]->si_tty; DPRINTF(("ubser_ioctl: cmd = 0x%08lx\n", cmd)); if (sc->sc_dying) return (EIO); error = ttyioctl(dev, cmd, data, flag, p); if (error != ENOTTY) { DPRINTF(("ubser_ioctl: l_ioctl: error = %d\n", error)); return (error); } error = 0; s = spltty(); switch (cmd) { case TIOCSBRK: /* clearing break condition is done in firmware */ DPRINTF(("ubser_ioctl: TIOCSBRK\n")); req.bmRequestType = UT_READ_VENDOR_INTERFACE; req.bRequest = VENDOR_SET_BREAK; USETW(req.wValue, dev2unit(dev) & 0x07); USETW(req.wIndex, sc->sc_ifaceno); USETW(req.wLength, 0); error = usbd_do_request_flags(sc->sc_udev, &req, &sc->sc_numser, USBD_SHORT_XFER_OK, &alen, USBD_DEFAULT_TIMEOUT); break; /* XXX: something else to handle? */ } splx(s); return (error); } static int ubser_read(struct cdev *dev, struct uio *uio, int flag) { struct ubser_softc *sc; struct tty *tp; int error; USB_GET_SC(ubser, dev2unit(dev) / 8, sc); tp = sc->dev[dev2unit(dev) & 0x07]->si_tty; DPRINTF(("ubser_read: tp = %p, flag = 0x%x\n", tp, flag)); if (sc->sc_dying) return (EIO); error = ttyld_read(tp, uio, flag); DPRINTF(("ubser_read: error = %d\n", error)); return (error); } static int ubser_write(struct cdev *dev, struct uio *uio, int flag) { struct ubser_softc *sc; struct tty *tp; int error; USB_GET_SC(ubser, dev2unit(dev) / 8, sc); tp = sc->dev[dev2unit(dev) & 0x07]->si_tty; DPRINTF(("ubser_write: tp = %p, flag = 0x%x\n", tp, flag)); if (sc->sc_dying) return (EIO); error = ttyld_write(tp, uio, flag); DPRINTF(("ubser_write: error = %d\n", error)); return (error); } DRIVER_MODULE(ubser, uhub, ubser_driver, ubser_devclass, usbd_driver_load, 0);