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NetBSD/sys/dev/usb/uplcom.c

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/* $NetBSD: uplcom.c,v 1.23 2001/12/03 01:47:12 augustss Exp $ */
/*
* Copyright (c) 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Ichiro FUKUHARA (ichiro@ichiro.org).
*
* 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.
*/
/*
* Simple datasheet
* http://www.prolific.com.tw/download/DataSheet/pl2303_ds11.PDF
* http://www.nisseisg.co.jp/jyouhou/_cp/@gif/2303.pdf
* (english)
*
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: uplcom.c,v 1.23 2001/12/03 01:47:12 augustss Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/ioctl.h>
#include <sys/conf.h>
#include <sys/tty.h>
#include <sys/file.h>
#include <sys/select.h>
#include <sys/proc.h>
#include <sys/vnode.h>
#include <sys/device.h>
#include <sys/poll.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbcdc.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdi_util.h>
#include <dev/usb/usbdevs.h>
#include <dev/usb/usb_quirks.h>
#include <dev/usb/usbdevs.h>
#include <dev/usb/ucomvar.h>
#ifdef UPLCOM_DEBUG
#define DPRINTFN(n, x) if (uplcomdebug > (n)) logprintf x
int uplcomdebug = 0;
#else
#define DPRINTFN(n, x)
#endif
#define DPRINTF(x) DPRINTFN(0, x)
#define UPLCOM_CONFIG_INDEX 0
#define UPLCOM_IFACE_INDEX 0
#define UPLCOM_SECOND_IFACE_INDEX 1
#define UPLCOM_SET_REQUEST 0x01
#define UPLCOM_SET_CRTSCTS 0x41
#define RSAQ_STATUS_DSR 0x02
#define RSAQ_STATUS_DCD 0x01
struct uplcom_softc {
USBBASEDEVICE sc_dev; /* base device */
usbd_device_handle sc_udev; /* USB device */
usbd_interface_handle sc_iface; /* interface */
int sc_iface_number; /* interface number */
usbd_interface_handle sc_intr_iface; /* interrupt interface */
int sc_intr_number; /* interrupt number */
usbd_pipe_handle sc_intr_pipe; /* interrupt pipe */
u_char *sc_intr_buf; /* interrupt buffer */
int sc_isize;
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 */
u_char sc_status;
device_ptr_t sc_subdev; /* ucom device */
u_char sc_dying; /* disconnecting */
u_char sc_lsr; /* Local status register */
u_char sc_msr; /* uplcom status register */
};
/*
* These are the maximum number of bytes transferred per frame.
* The output buffer size cannot be increased due to the size encoding.
*/
#define UPLCOMIBUFSIZE 256
#define UPLCOMOBUFSIZE 256
Static usbd_status uplcom_reset(struct uplcom_softc *);
Static usbd_status uplcom_set_line_coding(struct uplcom_softc *sc,
usb_cdc_line_state_t *state);
Static usbd_status uplcom_set_crtscts(struct uplcom_softc *);
Static void uplcom_intr(usbd_xfer_handle, usbd_private_handle, usbd_status);
Static void uplcom_set(void *, int, int, int);
Static void uplcom_dtr(struct uplcom_softc *, int);
Static void uplcom_rts(struct uplcom_softc *, int);
Static void uplcom_break(struct uplcom_softc *, int);
Static void uplcom_set_line_state(struct uplcom_softc *);
Static void uplcom_get_status(void *, int portno, u_char *lsr, u_char *msr);
#if TODO
Static int uplcom_ioctl(void *, int, u_long, caddr_t, int, struct proc *);
#endif
Static int uplcom_param(void *, int, struct termios *);
Static int uplcom_open(void *, int);
Static void uplcom_close(void *, int);
struct ucom_methods uplcom_methods = {
uplcom_get_status,
uplcom_set,
uplcom_param,
NULL, /* uplcom_ioctl, TODO */
uplcom_open,
uplcom_close,
NULL,
NULL,
};
static const struct usb_devno uplcom_devs[] = {
/* I/O DATA USB-RSAQ2 */
{ USB_VENDOR_PROLIFIC, USB_PRODUCT_PROLIFIC_RSAQ2 },
/* I/O DATA USB-RSAQ */
{ USB_VENDOR_IODATA, USB_PRODUCT_IODATA_USBRSAQ },
/* PLANEX USB-RS232 URS-03 */
{ USB_VENDOR_ATEN, USB_PRODUCT_ATEN_UC232A },
/* IOGEAR/ATEN UC-232A */
{ USB_VENDOR_PROLIFIC, USB_PRODUCT_PROLIFIC_PL2303 },
/* ELECOM UC-SGT */
{ USB_VENDOR_ELECOM, USB_PRODUCT_ELECOM_UCSGT },
};
#define uplcom_lookup(v, p) usb_lookup(uplcom_devs, v, p)
USB_DECLARE_DRIVER(uplcom);
USB_MATCH(uplcom)
{
USB_MATCH_START(uplcom, uaa);
if (uaa->iface != NULL)
return (UMATCH_NONE);
return (uplcom_lookup(uaa->vendor, uaa->product) != NULL ?
UMATCH_VENDOR_PRODUCT : UMATCH_NONE);
}
USB_ATTACH(uplcom)
{
USB_ATTACH_START(uplcom, sc, uaa);
usbd_device_handle dev = uaa->device;
usb_config_descriptor_t *cdesc;
usb_interface_descriptor_t *id;
usb_endpoint_descriptor_t *ed;
char devinfo[1024];
char *devname = USBDEVNAME(sc->sc_dev);
usbd_status err;
int i;
struct ucom_attach_args uca;
usbd_devinfo(dev, 0, devinfo);
USB_ATTACH_SETUP;
printf("%s: %s\n", devname, devinfo);
sc->sc_udev = dev;
DPRINTF(("\n\nuplcom attach: sc=%p\n", sc));
/* initialize endpoints */
uca.bulkin = uca.bulkout = -1;
sc->sc_intr_number = -1;
sc->sc_intr_pipe = NULL;
/* Move the device into the configured state. */
err = usbd_set_config_index(dev, UPLCOM_CONFIG_INDEX, 1);
if (err) {
printf("\n%s: failed to set configuration, err=%s\n",
devname, usbd_errstr(err));
sc->sc_dying = 1;
USB_ATTACH_ERROR_RETURN;
}
/* get the config descriptor */
cdesc = usbd_get_config_descriptor(sc->sc_udev);
if (cdesc == NULL) {
printf("%s: failed to get configuration descriptor\n",
USBDEVNAME(sc->sc_dev));
sc->sc_dying = 1;
USB_ATTACH_ERROR_RETURN;
}
/* get the (first/common) interface */
err = usbd_device2interface_handle(dev, UPLCOM_IFACE_INDEX,
&sc->sc_iface);
if (err) {
printf("\n%s: failed to get interface, err=%s\n",
devname, usbd_errstr(err));
sc->sc_dying = 1;
USB_ATTACH_ERROR_RETURN;
}
/* Find the interrupt endpoints */
id = usbd_get_interface_descriptor(sc->sc_iface);
sc->sc_iface_number = id->bInterfaceNumber;
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",
USBDEVNAME(sc->sc_dev), i);
sc->sc_dying = 1;
USB_ATTACH_ERROR_RETURN;
}
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 (sc->sc_intr_number== -1) {
printf("%s: Could not find interrupt in\n",
USBDEVNAME(sc->sc_dev));
sc->sc_dying = 1;
USB_ATTACH_ERROR_RETURN;
}
/* keep interface for interrupt */
sc->sc_intr_iface = sc->sc_iface;
/*
* USB-RSAQ1 has two interface
*
* USB-RSAQ1 | USB-RSAQ2
* -----------------+-----------------
* Interface 0 |Interface 0
* Interrupt(0x81) | Interrupt(0x81)
* -----------------+ BulkIN(0x02)
* Interface 1 | BulkOUT(0x83)
* BulkIN(0x02) |
* BulkOUT(0x83) |
*/
if (cdesc->bNumInterface == 2) {
err = usbd_device2interface_handle(dev,
UPLCOM_SECOND_IFACE_INDEX, &sc->sc_iface);
if (err) {
printf("\n%s: failed to get second interface, err=%s\n",
devname, usbd_errstr(err));
sc->sc_dying = 1;
USB_ATTACH_ERROR_RETURN;
}
}
/* Find the bulk{in,out} endpoints */
id = usbd_get_interface_descriptor(sc->sc_iface);
sc->sc_iface_number = id->bInterfaceNumber;
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",
USBDEVNAME(sc->sc_dev), i);
sc->sc_dying = 1;
USB_ATTACH_ERROR_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;
}
}
if (uca.bulkin == -1) {
printf("%s: Could not find data bulk in\n",
USBDEVNAME(sc->sc_dev));
sc->sc_dying = 1;
USB_ATTACH_ERROR_RETURN;
}
if (uca.bulkout == -1) {
printf("%s: Could not find data bulk out\n",
USBDEVNAME(sc->sc_dev));
sc->sc_dying = 1;
USB_ATTACH_ERROR_RETURN;
}
sc->sc_dtr = sc->sc_rts = -1;
uca.portno = UCOM_UNK_PORTNO;
/* bulkin, bulkout set above */
uca.ibufsize = UPLCOMIBUFSIZE;
uca.obufsize = UPLCOMOBUFSIZE;
uca.ibufsizepad = UPLCOMIBUFSIZE;
uca.opkthdrlen = 0;
uca.device = dev;
uca.iface = sc->sc_iface;
uca.methods = &uplcom_methods;
uca.arg = sc;
uca.info = NULL;
err = uplcom_reset(sc);
if (err) {
printf("%s: reset failed, %s\n", USBDEVNAME(sc->sc_dev),
usbd_errstr(err));
sc->sc_dying = 1;
USB_ATTACH_ERROR_RETURN;
}
usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev,
USBDEV(sc->sc_dev));
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);
USB_ATTACH_SUCCESS_RETURN;
}
USB_DETACH(uplcom)
{
USB_DETACH_START(uplcom, sc);
int rv = 0;
DPRINTF(("uplcom_detach: sc=%p flags=%d\n", sc, flags));
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_intr_pipe = NULL;
}
sc->sc_dying = 1;
if (sc->sc_subdev != NULL) {
rv = config_detach(sc->sc_subdev, flags);
sc->sc_subdev = NULL;
}
usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev,
USBDEV(sc->sc_dev));
return (rv);
}
int
uplcom_activate(device_ptr_t self, enum devact act)
{
struct uplcom_softc *sc = (struct uplcom_softc *)self;
int rv = 0;
switch (act) {
case DVACT_ACTIVATE:
return (EOPNOTSUPP);
break;
case DVACT_DEACTIVATE:
if (sc->sc_subdev != NULL)
rv = config_deactivate(sc->sc_subdev);
sc->sc_dying = 1;
break;
}
return (rv);
}
usbd_status
uplcom_reset(struct uplcom_softc *sc)
{
usb_device_request_t req;
usbd_status err;
req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
req.bRequest = UPLCOM_SET_REQUEST;
USETW(req.wValue, 0);
USETW(req.wIndex, sc->sc_iface_number);
USETW(req.wLength, 0);
err = usbd_do_request(sc->sc_udev, &req, 0);
if (err)
return (EIO);
return (0);
}
void
uplcom_set_line_state(struct uplcom_softc *sc)
{
usb_device_request_t req;
int ls;
ls = (sc->sc_dtr ? UCDC_LINE_DTR : 0) |
(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_iface_number);
USETW(req.wLength, 0);
(void)usbd_do_request(sc->sc_udev, &req, 0);
}
void
uplcom_set(void *addr, int portno, int reg, int onoff)
{
struct uplcom_softc *sc = addr;
switch (reg) {
case UCOM_SET_DTR:
uplcom_dtr(sc, onoff);
break;
case UCOM_SET_RTS:
uplcom_rts(sc, onoff);
break;
case UCOM_SET_BREAK:
uplcom_break(sc, onoff);
break;
default:
break;
}
}
void
uplcom_dtr(struct uplcom_softc *sc, int onoff)
{
DPRINTF(("uplcom_dtr: onoff=%d\n", onoff));
if (sc->sc_dtr == onoff)
return;
sc->sc_dtr = onoff;
uplcom_set_line_state(sc);
}
void
uplcom_rts(struct uplcom_softc *sc, int onoff)
{
DPRINTF(("uplcom_rts: onoff=%d\n", onoff));
if (sc->sc_rts == onoff)
return;
sc->sc_rts = onoff;
uplcom_set_line_state(sc);
}
void
uplcom_break(struct uplcom_softc *sc, int onoff)
{
usb_device_request_t req;
DPRINTF(("uplcom_break: onoff=%d\n", onoff));
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_iface_number);
USETW(req.wLength, 0);
(void)usbd_do_request(sc->sc_udev, &req, 0);
}
usbd_status
uplcom_set_crtscts(struct uplcom_softc *sc)
{
usb_device_request_t req;
usbd_status err;
DPRINTF(("uplcom_set_crtscts: on\n"));
req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
req.bRequest = UPLCOM_SET_REQUEST;
USETW(req.wValue, 0);
USETW(req.wIndex, UPLCOM_SET_CRTSCTS);
USETW(req.wLength, 0);
err = usbd_do_request(sc->sc_udev, &req, 0);
if (err) {
DPRINTF(("uplcom_set_crtscts: failed, err=%s\n",
usbd_errstr(err)));
return (err);
}
return (USBD_NORMAL_COMPLETION);
}
usbd_status
uplcom_set_line_coding(struct uplcom_softc *sc, usb_cdc_line_state_t *state)
{
usb_device_request_t req;
usbd_status err;
DPRINTF(("uplcom_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(("uplcom_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_iface_number);
USETW(req.wLength, UCDC_LINE_STATE_LENGTH);
err = usbd_do_request(sc->sc_udev, &req, state);
if (err) {
DPRINTF(("uplcom_set_line_coding: failed, err=%s\n",
usbd_errstr(err)));
return (err);
}
sc->sc_line_state = *state;
return (USBD_NORMAL_COMPLETION);
}
int
uplcom_param(void *addr, int portno, struct termios *t)
{
struct uplcom_softc *sc = addr;
usbd_status err;
usb_cdc_line_state_t ls;
DPRINTF(("uplcom_param: sc=%p\n", sc));
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;
}
err = uplcom_set_line_coding(sc, &ls);
if (err) {
DPRINTF(("uplcom_param: err=%s\n", usbd_errstr(err)));
return (EIO);
}
if (ISSET(t->c_cflag, CRTSCTS))
uplcom_set_crtscts(sc);
if (err) {
DPRINTF(("uplcom_param: err=%s\n", usbd_errstr(err)));
return (EIO);
}
return (0);
}
int
uplcom_open(void *addr, int portno)
{
struct uplcom_softc *sc = addr;
int err;
if (sc->sc_dying)
return (EIO);
DPRINTF(("uplcom_open: sc=%p\n", sc));
if (sc->sc_intr_number != -1 && sc->sc_intr_pipe == NULL) {
sc->sc_status = 0; /* clear status bit */
sc->sc_intr_buf = malloc(sc->sc_isize, M_USBDEV, M_WAITOK);
err = usbd_open_pipe_intr(sc->sc_intr_iface, sc->sc_intr_number,
USBD_SHORT_XFER_OK, &sc->sc_intr_pipe, sc,
sc->sc_intr_buf, sc->sc_isize,
uplcom_intr, USBD_DEFAULT_INTERVAL);
if (err) {
DPRINTF(("%s: cannot open interrupt pipe (addr %d)\n",
USBDEVNAME(sc->sc_dev), sc->sc_intr_number));
return (EIO);
}
}
return (0);
}
void
uplcom_close(void *addr, int portno)
{
struct uplcom_softc *sc = addr;
int err;
if (sc->sc_dying)
return;
DPRINTF(("uplcom_close: close\n"));
if (sc->sc_intr_pipe != NULL) {
err = usbd_abort_pipe(sc->sc_intr_pipe);
if (err)
printf("%s: abort interrupt pipe failed: %s\n",
USBDEVNAME(sc->sc_dev), usbd_errstr(err));
err = usbd_close_pipe(sc->sc_intr_pipe);
if (err)
printf("%s: close interrupt pipe failed: %s\n",
USBDEVNAME(sc->sc_dev), usbd_errstr(err));
free(sc->sc_intr_buf, M_USBDEV);
sc->sc_intr_pipe = NULL;
}
}
void
uplcom_intr(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
{
struct uplcom_softc *sc = priv;
u_char *buf = sc->sc_intr_buf;
u_char pstatus;
if (sc->sc_dying)
return;
if (status != USBD_NORMAL_COMPLETION) {
if (status == USBD_NOT_STARTED || status == USBD_CANCELLED)
return;
DPRINTF(("%s: abnormal status: %s\n", USBDEVNAME(sc->sc_dev),
usbd_errstr(status)));
usbd_clear_endpoint_stall_async(sc->sc_intr_pipe);
return;
}
DPRINTF(("%s: uplcom status = %02x\n", USBDEVNAME(sc->sc_dev), buf[8]));
sc->sc_lsr = sc->sc_msr = 0;
pstatus = buf[8];
if (ISSET(pstatus, RSAQ_STATUS_DSR))
sc->sc_msr |= UMSR_DSR;
if (ISSET(pstatus, RSAQ_STATUS_DCD))
sc->sc_msr |= UMSR_DCD;
ucom_status_change((struct ucom_softc *) sc->sc_subdev);
}
void
uplcom_get_status(void *addr, int portno, u_char *lsr, u_char *msr)
{
struct uplcom_softc *sc = addr;
DPRINTF(("uplcom_get_status:\n"));
if (lsr != NULL)
*lsr = sc->sc_lsr;
if (msr != NULL)
*msr = sc->sc_msr;
}
#if TODO
int
uplcom_ioctl(void *addr, int portno, u_long cmd, caddr_t data, int flag,
struct proc *p)
{
struct uplcom_softc *sc = addr;
int error = 0;
if (sc->sc_dying)
return (EIO);
DPRINTF(("uplcom_ioctl: cmd=0x%08lx\n", cmd));
switch (cmd) {
case TIOCNOTTY:
case TIOCMGET:
case TIOCMSET:
case USB_GET_CM_OVER_DATA:
case USB_SET_CM_OVER_DATA:
break;
default:
DPRINTF(("uplcom_ioctl: unknown\n"));
error = ENOTTY;
break;
}
return (error);
}
#endif
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