/* $OpenBSD: uvscom.c,v 1.37 2018/04/27 08:08:06 guenther Exp $ */ /* $NetBSD: uvscom.c,v 1.9 2003/02/12 15:36:20 ichiro Exp $ */ /*- * 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. * * $FreeBSD: src/sys/dev/usb/uvscom.c,v 1.1 2002/03/18 18:23:39 joe Exp $ */ /* * uvscom: SUNTAC Slipper U VS-10U driver. * Slipper U is a PC card to USB converter for data communication card * adapter. It supports DDI Pocket's Air H" C@rd, C@rd H" 64, NTT's P-in, * P-in m@ater and various data communication card adapters. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef UVSCOM_DEBUG static int uvscomdebug = 1; #define DPRINTFN(n, x) do { if (uvscomdebug > (n)) printf x; } while (0) #else #define DPRINTFN(n, x) #endif #define DPRINTF(x) DPRINTFN(0, x) #define UVSCOM_IFACE_INDEX 0 #define UVSCOM_INTR_INTERVAL 100 /* mS */ #define UVSCOM_UNIT_WAIT 5 /* Request */ #define UVSCOM_SET_SPEED 0x10 #define UVSCOM_LINE_CTL 0x11 #define UVSCOM_SET_PARAM 0x12 #define UVSCOM_READ_STATUS 0xd0 #define UVSCOM_SHUTDOWN 0xe0 /* UVSCOM_SET_SPEED parameters */ #define UVSCOM_SPEED_150BPS 0x00 #define UVSCOM_SPEED_300BPS 0x01 #define UVSCOM_SPEED_600BPS 0x02 #define UVSCOM_SPEED_1200BPS 0x03 #define UVSCOM_SPEED_2400BPS 0x04 #define UVSCOM_SPEED_4800BPS 0x05 #define UVSCOM_SPEED_9600BPS 0x06 #define UVSCOM_SPEED_19200BPS 0x07 #define UVSCOM_SPEED_38400BPS 0x08 #define UVSCOM_SPEED_57600BPS 0x09 #define UVSCOM_SPEED_115200BPS 0x0a /* UVSCOM_LINE_CTL parameters */ #define UVSCOM_BREAK 0x40 #define UVSCOM_RTS 0x02 #define UVSCOM_DTR 0x01 #define UVSCOM_LINE_INIT 0x08 /* UVSCOM_SET_PARAM parameters */ #define UVSCOM_DATA_MASK 0x03 #define UVSCOM_DATA_BIT_8 0x03 #define UVSCOM_DATA_BIT_7 0x02 #define UVSCOM_DATA_BIT_6 0x01 #define UVSCOM_DATA_BIT_5 0x00 #define UVSCOM_STOP_MASK 0x04 #define UVSCOM_STOP_BIT_2 0x04 #define UVSCOM_STOP_BIT_1 0x00 #define UVSCOM_PARITY_MASK 0x18 #define UVSCOM_PARITY_EVEN 0x18 #if 0 #define UVSCOM_PARITY_UNK 0x10 #endif #define UVSCOM_PARITY_ODD 0x08 #define UVSCOM_PARITY_NONE 0x00 /* Status bits */ #define UVSCOM_TXRDY 0x04 #define UVSCOM_RXRDY 0x01 #define UVSCOM_DCD 0x08 #define UVSCOM_NOCARD 0x04 #define UVSCOM_DSR 0x02 #define UVSCOM_CTS 0x01 #define UVSCOM_USTAT_MASK (UVSCOM_NOCARD | UVSCOM_DSR | UVSCOM_CTS) struct uvscom_softc { struct device sc_dev; /* base device */ struct usbd_device *sc_udev; /* USB device */ struct usbd_interface *sc_iface; /* interface */ struct usbd_interface *sc_intr_iface; /* interrupt interface */ int sc_intr_number; /* interrupt number */ struct usbd_pipe *sc_intr_pipe; /* interrupt pipe */ u_char *sc_intr_buf; /* interrupt buffer */ int sc_isize; u_char sc_dtr; /* current DTR state */ u_char sc_rts; /* current RTS state */ u_char sc_lsr; /* Local status register */ u_char sc_msr; /* uvscom status register */ uint16_t sc_lcr; /* Line control */ u_char sc_usr; /* unit status */ struct device *sc_subdev; /* ucom device */ }; /* * These are the maximum number of bytes transferred per frame. * The output buffer size cannot be increased due to the size encoding. */ #define UVSCOMIBUFSIZE 512 #define UVSCOMOBUFSIZE 64 usbd_status uvscom_readstat(struct uvscom_softc *); usbd_status uvscom_shutdown(struct uvscom_softc *); usbd_status uvscom_reset(struct uvscom_softc *); usbd_status uvscom_set_line_coding(struct uvscom_softc *, uint16_t, uint16_t); usbd_status uvscom_set_line(struct uvscom_softc *, uint16_t); usbd_status uvscom_set_crtscts(struct uvscom_softc *); void uvscom_get_status(void *, int, u_char *, u_char *); void uvscom_dtr(struct uvscom_softc *, int); void uvscom_rts(struct uvscom_softc *, int); void uvscom_break(struct uvscom_softc *, int); void uvscom_set(void *, int, int, int); void uvscom_intr(struct usbd_xfer *, void *, usbd_status); int uvscom_param(void *, int, struct termios *); int uvscom_open(void *, int); void uvscom_close(void *, int); struct ucom_methods uvscom_methods = { uvscom_get_status, uvscom_set, uvscom_param, NULL, /* uvscom_ioctl, TODO */ uvscom_open, uvscom_close, NULL, NULL }; static const struct usb_devno uvscom_devs [] = { /* SUNTAC U-Cable type A3 */ { USB_VENDOR_SUNTAC, USB_PRODUCT_SUNTAC_AS64LX }, /* SUNTAC U-Cable type A4 */ { USB_VENDOR_SUNTAC, USB_PRODUCT_SUNTAC_AS144L4 }, /* SUNTAC U-Cable type D2 */ { USB_VENDOR_SUNTAC, USB_PRODUCT_SUNTAC_DS96L }, /* SUNTAC U-Cable type P1 */ { USB_VENDOR_SUNTAC, USB_PRODUCT_SUNTAC_PS64P1 }, /* SUNTAC Slipper U */ { USB_VENDOR_SUNTAC, USB_PRODUCT_SUNTAC_VS10U }, /* SUNTAC Ir-Trinity */ { USB_VENDOR_SUNTAC, USB_PRODUCT_SUNTAC_IS96U }, }; int uvscom_match(struct device *, void *, void *); void uvscom_attach(struct device *, struct device *, void *); int uvscom_detach(struct device *, int); struct cfdriver uvscom_cd = { NULL, "uvscom", DV_DULL }; const struct cfattach uvscom_ca = { sizeof(struct uvscom_softc), uvscom_match, uvscom_attach, uvscom_detach }; int uvscom_match(struct device *parent, void *match, void *aux) { struct usb_attach_arg *uaa = aux; if (uaa->iface == NULL) return (UMATCH_NONE); return (usb_lookup(uvscom_devs, uaa->vendor, uaa->product) != NULL ? UMATCH_VENDOR_PRODUCT : UMATCH_NONE); } void uvscom_attach(struct device *parent, struct device *self, void *aux) { struct uvscom_softc *sc = (struct uvscom_softc *)self; struct usb_attach_arg *uaa = aux; struct usbd_device *dev = uaa->device; usb_config_descriptor_t *cdesc; usb_interface_descriptor_t *id; usb_endpoint_descriptor_t *ed; const char *devname = sc->sc_dev.dv_xname; usbd_status err; int i; struct ucom_attach_args uca; sc->sc_udev = dev; DPRINTF(("uvscom attach: sc = %p\n", sc)); /* initialize endpoints */ uca.bulkin = uca.bulkout = -1; sc->sc_intr_number = -1; sc->sc_intr_pipe = NULL; /* get the config descriptor */ cdesc = usbd_get_config_descriptor(sc->sc_udev); if (cdesc == NULL) { printf("%s: failed to get configuration descriptor\n", sc->sc_dev.dv_xname); usbd_deactivate(sc->sc_udev); return; } /* get the common interface */ err = usbd_device2interface_handle(dev, UVSCOM_IFACE_INDEX, &sc->sc_iface); if (err) { printf("%s: failed to get interface, err=%s\n", devname, usbd_errstr(err)); usbd_deactivate(sc->sc_udev); return; } id = usbd_get_interface_descriptor(sc->sc_iface); /* Find endpoints */ for (i = 0; i < id->bNumEndpoints; i++) { ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); if (ed == NULL) { printf("%s: no endpoint descriptor for %d\n", sc->sc_dev.dv_xname, i); usbd_deactivate(sc->sc_udev); return; } if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { uca.bulkin = ed->bEndpointAddress; } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { uca.bulkout = ed->bEndpointAddress; } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) { sc->sc_intr_number = ed->bEndpointAddress; sc->sc_isize = UGETW(ed->wMaxPacketSize); } } if (uca.bulkin == -1) { printf("%s: Could not find data bulk in\n", sc->sc_dev.dv_xname); usbd_deactivate(sc->sc_udev); return; } if (uca.bulkout == -1) { printf("%s: Could not find data bulk out\n", sc->sc_dev.dv_xname); usbd_deactivate(sc->sc_udev); return; } if (sc->sc_intr_number == -1) { printf("%s: Could not find interrupt in\n", sc->sc_dev.dv_xname); usbd_deactivate(sc->sc_udev); return; } sc->sc_dtr = sc->sc_rts = 0; sc->sc_lcr = UVSCOM_LINE_INIT; uca.portno = UCOM_UNK_PORTNO; /* bulkin, bulkout set above */ uca.ibufsize = UVSCOMIBUFSIZE; uca.obufsize = UVSCOMOBUFSIZE; uca.ibufsizepad = UVSCOMIBUFSIZE; uca.opkthdrlen = 0; uca.device = dev; uca.iface = sc->sc_iface; uca.methods = &uvscom_methods; uca.arg = sc; uca.info = NULL; err = uvscom_reset(sc); if (err) { printf("%s: reset failed, %s\n", sc->sc_dev.dv_xname, usbd_errstr(err)); usbd_deactivate(sc->sc_udev); return; } DPRINTF(("uvscom: in = 0x%x out = 0x%x intr = 0x%x\n", ucom->sc_bulkin_no, ucom->sc_bulkout_no, sc->sc_intr_number)); DPRINTF(("uplcom: in=0x%x out=0x%x intr=0x%x\n", uca.bulkin, uca.bulkout, sc->sc_intr_number )); sc->sc_subdev = config_found_sm(self, &uca, ucomprint, ucomsubmatch); } int uvscom_detach(struct device *self, int flags) { struct uvscom_softc *sc = (struct uvscom_softc *)self; int rv = 0; DPRINTF(("uvscom_detach: sc = %p\n", sc)); if (sc->sc_intr_pipe != NULL) { usbd_abort_pipe(sc->sc_intr_pipe); usbd_close_pipe(sc->sc_intr_pipe); free(sc->sc_intr_buf, M_USBDEV, sc->sc_isize); sc->sc_intr_pipe = NULL; } if (sc->sc_subdev != NULL) { rv = config_detach(sc->sc_subdev, flags); sc->sc_subdev = NULL; } return (rv); } usbd_status uvscom_readstat(struct uvscom_softc *sc) { usb_device_request_t req; usbd_status err; uint16_t r; DPRINTF(("%s: send readstat\n", sc->sc_dev.dv_xname)); req.bmRequestType = UT_READ_VENDOR_DEVICE; req.bRequest = UVSCOM_READ_STATUS; USETW(req.wValue, 0); USETW(req.wIndex, 0); USETW(req.wLength, 2); err = usbd_do_request(sc->sc_udev, &req, &r); if (err) { printf("%s: uvscom_readstat: %s\n", sc->sc_dev.dv_xname, usbd_errstr(err)); return (err); } DPRINTF(("%s: uvscom_readstat: r = %d\n", sc->sc_dev.dv_xname, r)); return (USBD_NORMAL_COMPLETION); } usbd_status uvscom_shutdown(struct uvscom_softc *sc) { usb_device_request_t req; usbd_status err; DPRINTF(("%s: send shutdown\n", sc->sc_dev.dv_xname)); req.bmRequestType = UT_WRITE_VENDOR_DEVICE; req.bRequest = UVSCOM_SHUTDOWN; USETW(req.wValue, 0); USETW(req.wIndex, 0); USETW(req.wLength, 0); err = usbd_do_request(sc->sc_udev, &req, NULL); if (err) { printf("%s: uvscom_shutdown: %s\n", sc->sc_dev.dv_xname, usbd_errstr(err)); return (err); } return (USBD_NORMAL_COMPLETION); } usbd_status uvscom_reset(struct uvscom_softc *sc) { DPRINTF(("%s: uvscom_reset\n", sc->sc_dev.dv_xname)); return (USBD_NORMAL_COMPLETION); } usbd_status uvscom_set_crtscts(struct uvscom_softc *sc) { DPRINTF(("%s: uvscom_set_crtscts\n", sc->sc_dev.dv_xname)); return (USBD_NORMAL_COMPLETION); } usbd_status uvscom_set_line(struct uvscom_softc *sc, uint16_t line) { usb_device_request_t req; usbd_status err; DPRINTF(("%s: uvscom_set_line: %04x\n", sc->sc_dev.dv_xname, line)); req.bmRequestType = UT_WRITE_VENDOR_DEVICE; req.bRequest = UVSCOM_LINE_CTL; USETW(req.wValue, line); USETW(req.wIndex, 0); USETW(req.wLength, 0); err = usbd_do_request(sc->sc_udev, &req, NULL); if (err) { printf("%s: uvscom_set_line: %s\n", sc->sc_dev.dv_xname, usbd_errstr(err)); return (err); } return (USBD_NORMAL_COMPLETION); } usbd_status uvscom_set_line_coding(struct uvscom_softc *sc, uint16_t lsp, uint16_t ls) { usb_device_request_t req; usbd_status err; DPRINTF(("%s: uvscom_set_line_coding: %02x %02x\n", sc->sc_dev.dv_xname, lsp, ls)); req.bmRequestType = UT_WRITE_VENDOR_DEVICE; req.bRequest = UVSCOM_SET_SPEED; USETW(req.wValue, lsp); USETW(req.wIndex, 0); USETW(req.wLength, 0); err = usbd_do_request(sc->sc_udev, &req, NULL); if (err) { printf("%s: uvscom_set_line_coding: %s\n", sc->sc_dev.dv_xname, usbd_errstr(err)); return (err); } req.bmRequestType = UT_WRITE_VENDOR_DEVICE; req.bRequest = UVSCOM_SET_PARAM; USETW(req.wValue, ls); USETW(req.wIndex, 0); USETW(req.wLength, 0); err = usbd_do_request(sc->sc_udev, &req, NULL); if (err) { printf("%s: uvscom_set_line_coding: %s\n", sc->sc_dev.dv_xname, usbd_errstr(err)); return (err); } return (USBD_NORMAL_COMPLETION); } void uvscom_dtr(struct uvscom_softc *sc, int onoff) { DPRINTF(("%s: uvscom_dtr: onoff = %d\n", sc->sc_dev.dv_xname, onoff)); if (sc->sc_dtr == onoff) return; /* no change */ sc->sc_dtr = onoff; if (onoff) SET(sc->sc_lcr, UVSCOM_DTR); else CLR(sc->sc_lcr, UVSCOM_DTR); uvscom_set_line(sc, sc->sc_lcr); } void uvscom_rts(struct uvscom_softc *sc, int onoff) { DPRINTF(("%s: uvscom_rts: onoff = %d\n", sc->sc_dev.dv_xname, onoff)); if (sc->sc_rts == onoff) return; /* no change */ sc->sc_rts = onoff; if (onoff) SET(sc->sc_lcr, UVSCOM_RTS); else CLR(sc->sc_lcr, UVSCOM_RTS); uvscom_set_line(sc, sc->sc_lcr); } void uvscom_break(struct uvscom_softc *sc, int onoff) { DPRINTF(("%s: uvscom_break: onoff = %d\n", sc->sc_dev.dv_xname, onoff)); if (onoff) uvscom_set_line(sc, SET(sc->sc_lcr, UVSCOM_BREAK)); } void uvscom_set(void *addr, int portno, int reg, int onoff) { struct uvscom_softc *sc = addr; switch (reg) { case UCOM_SET_DTR: uvscom_dtr(sc, onoff); break; case UCOM_SET_RTS: uvscom_rts(sc, onoff); break; case UCOM_SET_BREAK: uvscom_break(sc, onoff); break; default: break; } } int uvscom_param(void *addr, int portno, struct termios *t) { struct uvscom_softc *sc = addr; usbd_status err; uint16_t lsp; uint16_t ls; DPRINTF(("%s: uvscom_param: sc = %p\n", sc->sc_dev.dv_xname, sc)); ls = 0; switch (t->c_ospeed) { case B150: lsp = UVSCOM_SPEED_150BPS; break; case B300: lsp = UVSCOM_SPEED_300BPS; break; case B600: lsp = UVSCOM_SPEED_600BPS; break; case B1200: lsp = UVSCOM_SPEED_1200BPS; break; case B2400: lsp = UVSCOM_SPEED_2400BPS; break; case B4800: lsp = UVSCOM_SPEED_4800BPS; break; case B9600: lsp = UVSCOM_SPEED_9600BPS; break; case B19200: lsp = UVSCOM_SPEED_19200BPS; break; case B38400: lsp = UVSCOM_SPEED_38400BPS; break; case B57600: lsp = UVSCOM_SPEED_57600BPS; break; case B115200: lsp = UVSCOM_SPEED_115200BPS; break; default: return (EIO); } if (ISSET(t->c_cflag, CSTOPB)) SET(ls, UVSCOM_STOP_BIT_2); else SET(ls, UVSCOM_STOP_BIT_1); if (ISSET(t->c_cflag, PARENB)) { if (ISSET(t->c_cflag, PARODD)) SET(ls, UVSCOM_PARITY_ODD); else SET(ls, UVSCOM_PARITY_EVEN); } else SET(ls, UVSCOM_PARITY_NONE); switch (ISSET(t->c_cflag, CSIZE)) { case CS5: SET(ls, UVSCOM_DATA_BIT_5); break; case CS6: SET(ls, UVSCOM_DATA_BIT_6); break; case CS7: SET(ls, UVSCOM_DATA_BIT_7); break; case CS8: SET(ls, UVSCOM_DATA_BIT_8); break; default: return (EIO); } err = uvscom_set_line_coding(sc, lsp, ls); if (err) return (EIO); if (ISSET(t->c_cflag, CRTSCTS)) { err = uvscom_set_crtscts(sc); if (err) return (EIO); } return (0); } int uvscom_open(void *addr, int portno) { struct uvscom_softc *sc = addr; int err; int i; if (usbd_is_dying(sc->sc_udev)) return (EIO); DPRINTF(("uvscom_open: sc = %p\n", sc)); if (sc->sc_intr_number != -1 && sc->sc_intr_pipe == NULL) { DPRINTF(("uvscom_open: open interrupt pipe.\n")); sc->sc_usr = 0; /* clear unit status */ err = uvscom_readstat(sc); if (err) { DPRINTF(("%s: uvscom_open: readstat faild\n", sc->sc_dev.dv_xname)); return (EIO); } sc->sc_intr_buf = malloc(sc->sc_isize, M_USBDEV, M_WAITOK); err = usbd_open_pipe_intr(sc->sc_iface, sc->sc_intr_number, USBD_SHORT_XFER_OK, &sc->sc_intr_pipe, sc, sc->sc_intr_buf, sc->sc_isize, uvscom_intr, UVSCOM_INTR_INTERVAL); if (err) { printf("%s: cannot open interrupt pipe (addr %d)\n", sc->sc_dev.dv_xname, sc->sc_intr_number); return (EIO); } } else { DPRINTF(("uvscom_open: did not open interrupt pipe.\n")); } if ((sc->sc_usr & UVSCOM_USTAT_MASK) == 0) { /* unit is not ready */ for (i = UVSCOM_UNIT_WAIT; i > 0; --i) { tsleep(&err, TTIPRI, "uvsop", hz); /* XXX */ if (ISSET(sc->sc_usr, UVSCOM_USTAT_MASK)) break; } if (i == 0) { DPRINTF(("%s: unit is not ready\n", sc->sc_dev.dv_xname)); return (EIO); } /* check PC card was inserted */ if (ISSET(sc->sc_usr, UVSCOM_NOCARD)) { DPRINTF(("%s: no card\n", sc->sc_dev.dv_xname)); return (EIO); } } return (0); } void uvscom_close(void *addr, int portno) { struct uvscom_softc *sc = addr; int err; if (usbd_is_dying(sc->sc_udev)) return; DPRINTF(("uvscom_close: close\n")); uvscom_shutdown(sc); if (sc->sc_intr_pipe != NULL) { usbd_abort_pipe(sc->sc_intr_pipe); err = usbd_close_pipe(sc->sc_intr_pipe); if (err) printf("%s: close interrupt pipe failed: %s\n", sc->sc_dev.dv_xname, usbd_errstr(err)); free(sc->sc_intr_buf, M_USBDEV, sc->sc_isize); sc->sc_intr_pipe = NULL; } } void uvscom_intr(struct usbd_xfer *xfer, void *priv, usbd_status status) { struct uvscom_softc *sc = priv; u_char *buf = sc->sc_intr_buf; u_char pstatus; if (usbd_is_dying(sc->sc_udev)) return; if (status != USBD_NORMAL_COMPLETION) { if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) return; printf("%s: uvscom_intr: abnormal status: %s\n", sc->sc_dev.dv_xname, usbd_errstr(status)); usbd_clear_endpoint_stall_async(sc->sc_intr_pipe); return; } DPRINTFN(2, ("%s: uvscom status = %02x %02x\n", sc->sc_dev.dv_xname, buf[0], buf[1])); sc->sc_lsr = sc->sc_msr = 0; sc->sc_usr = buf[1]; pstatus = buf[0]; if (ISSET(pstatus, UVSCOM_TXRDY)) SET(sc->sc_lsr, ULSR_TXRDY); if (ISSET(pstatus, UVSCOM_RXRDY)) SET(sc->sc_lsr, ULSR_RXRDY); pstatus = buf[1]; if (ISSET(pstatus, UVSCOM_CTS)) SET(sc->sc_msr, UMSR_CTS); if (ISSET(pstatus, UVSCOM_DSR)) SET(sc->sc_msr, UMSR_DSR); if (ISSET(pstatus, UVSCOM_DCD)) SET(sc->sc_msr, UMSR_DCD); ucom_status_change((struct ucom_softc *) sc->sc_subdev); } void uvscom_get_status(void *addr, int portno, u_char *lsr, u_char *msr) { struct uvscom_softc *sc = addr; if (lsr != NULL) *lsr = sc->sc_lsr; if (msr != NULL) *msr = sc->sc_msr; }