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freebsd-skq/sys/dev/usb/uftdi.c

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/* $NetBSD: uftdi.c,v 1.13 2002/09/23 05:51:23 simonb Exp $ */
/*-
* 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 <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* FTDI FT8U100AX serial adapter driver
*/
#include <sys/cdefs.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/ioccom.h>
#include <sys/fcntl.h>
#include <sys/conf.h>
#include <sys/tty.h>
#include <sys/file.h>
#include <sys/selinfo.h>
#include <sys/sysctl.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbhid.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdi_util.h>
#include "usbdevs.h"
#include <dev/usb/ucomvar.h>
#include <dev/usb/uftdireg.h>
#ifdef USB_DEBUG
static int uftdidebug = 0;
SYSCTL_NODE(_hw_usb, OID_AUTO, uftdi, CTLFLAG_RW, 0, "USB uftdi");
SYSCTL_INT(_hw_usb_uftdi, OID_AUTO, debug, CTLFLAG_RW,
&uftdidebug, 0, "uftdi debug level");
#define DPRINTF(x) do { \
if (uftdidebug) \
printf x; \
} while (0)
#define DPRINTFN(n, x) do { \
if (uftdidebug > (n)) \
printf x; \
} while (0)
#else
#define DPRINTF(x)
#define DPRINTFN(n,x)
#endif
#define UFTDI_CONFIG_INDEX 0
#define UFTDI_IFACE_INDEX 0
/*
* These are the maximum number of bytes transferred per frame.
* The output buffer size cannot be increased due to the size encoding.
*/
#define UFTDIIBUFSIZE 256
#define UFTDIOBUFSIZE 64
struct uftdi_softc {
struct ucom_softc sc_ucom;
usbd_interface_handle sc_iface; /* interface */
enum uftdi_type sc_type;
u_int sc_hdrlen;
u_char sc_msr;
u_char sc_lsr;
u_int last_lcr;
};
static void uftdi_get_status(void *, int portno, u_char *lsr, u_char *msr);
static void uftdi_set(void *, int, int, int);
static int uftdi_param(void *, int, struct termios *);
static int uftdi_open(void *sc, int portno);
static void uftdi_read(void *sc, int portno, u_char **ptr,u_int32_t *count);
static size_t uftdi_write(void *sc, int portno, struct tty *,
u_char *to, u_int32_t count);
static void uftdi_break(void *sc, int portno, int onoff);
static int uftdi_8u232am_getrate(speed_t speed, int *rate);
struct ucom_callback uftdi_callback = {
uftdi_get_status,
uftdi_set,
uftdi_param,
NULL,
uftdi_open,
NULL,
uftdi_read,
uftdi_write,
};
static int
uftdi_match(device_t self)
{
struct usb_attach_arg *uaa = device_get_ivars(self);
if (uaa->iface != NULL) {
if (uaa->vendor == USB_VENDOR_FTDI &&
(uaa->product == USB_PRODUCT_FTDI_SERIAL_2232C))
return (UMATCH_VENDOR_IFACESUBCLASS);
return (UMATCH_NONE);
}
DPRINTFN(20,("uftdi: vendor=0x%x, product=0x%x\n",
uaa->vendor, uaa->product));
if (uaa->vendor == USB_VENDOR_FTDI &&
(uaa->product == USB_PRODUCT_FTDI_SERIAL_8U100AX ||
uaa->product == USB_PRODUCT_FTDI_SERIAL_8U232AM ||
uaa->product == USB_PRODUCT_FTDI_SEMC_DSS20 ||
uaa->product == USB_PRODUCT_FTDI_CFA_631 ||
uaa->product == USB_PRODUCT_FTDI_CFA_632 ||
uaa->product == USB_PRODUCT_FTDI_CFA_633 ||
uaa->product == USB_PRODUCT_FTDI_CFA_634 ||
uaa->product == USB_PRODUCT_FTDI_CFA_635 ||
uaa->product == USB_PRODUCT_FTDI_USBSERIAL ||
uaa->product == USB_PRODUCT_FTDI_MX2_3 ||
uaa->product == USB_PRODUCT_FTDI_MX4_5 ||
uaa->product == USB_PRODUCT_FTDI_LK202 ||
uaa->product == USB_PRODUCT_FTDI_LK204 ||
uaa->product == USB_PRODUCT_FTDI_TACTRIX_OPENPORT_13M ||
uaa->product == USB_PRODUCT_FTDI_TACTRIX_OPENPORT_13S ||
uaa->product == USB_PRODUCT_FTDI_TACTRIX_OPENPORT_13U ||
uaa->product == USB_PRODUCT_FTDI_EISCOU ||
uaa->product == USB_PRODUCT_FTDI_UOPTBR ||
uaa->product == USB_PRODUCT_FTDI_EMCU2D ||
uaa->product == USB_PRODUCT_FTDI_PCMSFU ||
uaa->product == USB_PRODUCT_FTDI_EMCU2H ||
uaa->product == USB_PRODUCT_FTDI_MAXSTREAM ))
return (UMATCH_VENDOR_PRODUCT);
if (uaa->vendor == USB_VENDOR_SIIG2 &&
(uaa->product == USB_PRODUCT_SIIG2_US2308))
return (UMATCH_VENDOR_PRODUCT);
if (uaa->vendor == USB_VENDOR_INTREPIDCS &&
(uaa->product == USB_PRODUCT_INTREPIDCS_VALUECAN ||
uaa->product == USB_PRODUCT_INTREPIDCS_NEOVI))
return (UMATCH_VENDOR_PRODUCT);
if (uaa->vendor == USB_VENDOR_BBELECTRONICS &&
(uaa->product == USB_PRODUCT_BBELECTRONICS_USOTL4))
return (UMATCH_VENDOR_PRODUCT);
if (uaa->vendor == USB_VENDOR_MELCO &&
(uaa->product == USB_PRODUCT_MELCO_PCOPRS1))
return (UMATCH_VENDOR_PRODUCT);
if (uaa->vendor == USB_VENDOR_DRESDENELEKTRONIK &&
(uaa->product == USB_PRODUCT_DRESDENELEKTRONIK_SENSORTERMINALBOARD))
return (UMATCH_VENDOR_PRODUCT);
return (UMATCH_NONE);
}
static int
uftdi_attach(device_t self)
{
struct uftdi_softc *sc = device_get_softc(self);
struct usb_attach_arg *uaa = device_get_ivars(self);
usbd_device_handle dev = uaa->device;
usbd_interface_handle iface;
usb_interface_descriptor_t *id;
usb_endpoint_descriptor_t *ed;
int i;
usbd_status err;
struct ucom_softc *ucom = &sc->sc_ucom;
DPRINTFN(10,("\nuftdi_attach: sc=%p\n", sc));
ucom->sc_dev = self;
ucom->sc_udev = dev;
if (uaa->iface == NULL) {
/* Move the device into the configured state. */
err = usbd_set_config_index(dev, UFTDI_CONFIG_INDEX, 1);
if (err) {
device_printf(ucom->sc_dev,
"failed to set configuration, err=%s\n",
usbd_errstr(err));
goto bad;
}
err = usbd_device2interface_handle(dev, UFTDI_IFACE_INDEX, &iface);
if (err) {
device_printf(ucom->sc_dev,
"failed to get interface, err=%s\n", usbd_errstr(err));
goto bad;
}
} else {
iface = uaa->iface;
}
id = usbd_get_interface_descriptor(iface);
ucom->sc_iface = iface;
switch( uaa->vendor ){
case USB_VENDOR_FTDI:
switch( uaa->product ){
case USB_PRODUCT_FTDI_SERIAL_8U100AX:
sc->sc_type = UFTDI_TYPE_SIO;
sc->sc_hdrlen = 1;
break;
case USB_PRODUCT_FTDI_SEMC_DSS20:
case USB_PRODUCT_FTDI_SERIAL_8U232AM:
case USB_PRODUCT_FTDI_SERIAL_2232C:
case USB_PRODUCT_FTDI_CFA_631:
case USB_PRODUCT_FTDI_CFA_632:
case USB_PRODUCT_FTDI_CFA_633:
case USB_PRODUCT_FTDI_CFA_634:
case USB_PRODUCT_FTDI_CFA_635:
case USB_PRODUCT_FTDI_USBSERIAL:
case USB_PRODUCT_FTDI_MX2_3:
case USB_PRODUCT_FTDI_MX4_5:
case USB_PRODUCT_FTDI_LK202:
case USB_PRODUCT_FTDI_LK204:
case USB_PRODUCT_FTDI_TACTRIX_OPENPORT_13M:
case USB_PRODUCT_FTDI_TACTRIX_OPENPORT_13S:
case USB_PRODUCT_FTDI_TACTRIX_OPENPORT_13U:
case USB_PRODUCT_FTDI_EISCOU:
case USB_PRODUCT_FTDI_UOPTBR:
case USB_PRODUCT_FTDI_EMCU2D:
case USB_PRODUCT_FTDI_PCMSFU:
case USB_PRODUCT_FTDI_EMCU2H:
case USB_PRODUCT_FTDI_MAXSTREAM:
sc->sc_type = UFTDI_TYPE_8U232AM;
sc->sc_hdrlen = 0;
break;
default: /* Can't happen */
goto bad;
}
break;
case USB_VENDOR_INTREPIDCS:
switch( uaa->product ){
case USB_PRODUCT_INTREPIDCS_VALUECAN:
case USB_PRODUCT_INTREPIDCS_NEOVI:
sc->sc_type = UFTDI_TYPE_8U232AM;
sc->sc_hdrlen = 0;
break;
default: /* Can't happen */
goto bad;
}
break;
case USB_VENDOR_SIIG2:
switch( uaa->product ){
case USB_PRODUCT_SIIG2_US2308:
sc->sc_type = UFTDI_TYPE_8U232AM;
sc->sc_hdrlen = 0;
break;
default: /* Can't happen */
goto bad;
}
break;
case USB_VENDOR_BBELECTRONICS:
switch( uaa->product ){
case USB_PRODUCT_BBELECTRONICS_USOTL4:
sc->sc_type = UFTDI_TYPE_8U232AM;
sc->sc_hdrlen = 0;
break;
default: /* Can't happen */
goto bad;
}
break;
case USB_VENDOR_MELCO:
switch( uaa->product ){
case USB_PRODUCT_MELCO_PCOPRS1:
sc->sc_type = UFTDI_TYPE_8U232AM;
sc->sc_hdrlen = 0;
break;
default: /* Can't happen */
goto bad;
}
break;
case USB_VENDOR_DRESDENELEKTRONIK:
switch( uaa->product ){
case USB_PRODUCT_DRESDENELEKTRONIK_SENSORTERMINALBOARD:
sc->sc_type = UFTDI_TYPE_8U232AM;
sc->sc_hdrlen = 0;
break;
default: /* Can't happen */
goto bad;
}
break;
default: /* Can't happen */
goto bad;
}
ucom->sc_bulkin_no = ucom->sc_bulkout_no = -1;
for (i = 0; i < id->bNumEndpoints; i++) {
int addr, dir, attr;
ed = usbd_interface2endpoint_descriptor(iface, i);
if (ed == NULL) {
device_printf(ucom->sc_dev,
"could not read endpoint descriptor\n");
goto bad;
}
addr = ed->bEndpointAddress;
dir = UE_GET_DIR(ed->bEndpointAddress);
attr = ed->bmAttributes & UE_XFERTYPE;
if (dir == UE_DIR_IN && attr == UE_BULK)
ucom->sc_bulkin_no = addr;
else if (dir == UE_DIR_OUT && attr == UE_BULK)
ucom->sc_bulkout_no = addr;
else {
device_printf(ucom->sc_dev, "unexpected endpoint\n");
goto bad;
}
}
if (ucom->sc_bulkin_no == -1) {
device_printf(ucom->sc_dev, "Could not find data bulk in\n");
goto bad;
}
if (ucom->sc_bulkout_no == -1) {
device_printf(ucom->sc_dev, "Could not find data bulk out\n");
goto bad;
}
ucom->sc_parent = sc;
if (uaa->iface == NULL)
ucom->sc_portno = FTDI_PIT_SIOA;
else
ucom->sc_portno = FTDI_PIT_SIOA + id->bInterfaceNumber;
/* bulkin, bulkout set above */
ucom->sc_ibufsize = UFTDIIBUFSIZE;
ucom->sc_obufsize = UFTDIOBUFSIZE - sc->sc_hdrlen;
ucom->sc_ibufsizepad = UFTDIIBUFSIZE;
ucom->sc_opkthdrlen = sc->sc_hdrlen;
ucom->sc_callback = &uftdi_callback;
#if 0
usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, ucom->sc_udev,
ucom->sc_dev);
#endif
DPRINTF(("uftdi: in=0x%x out=0x%x\n", ucom->sc_bulkin_no, ucom->sc_bulkout_no));
ucom_attach(&sc->sc_ucom);
return 0;
bad:
DPRINTF(("uftdi_attach: ATTACH ERROR\n"));
ucom->sc_dying = 1;
return ENXIO;
}
#if 0
int
uftdi_activate(device_t self, enum devact act)
{
struct uftdi_softc *sc = (struct uftdi_softc *)self;
int rv = 0;
switch (act) {
case DVACT_ACTIVATE:
return (EOPNOTSUPP);
case DVACT_DEACTIVATE:
if (sc->sc_subdev != NULL)
rv = config_deactivate(sc->sc_subdev);
sc->sc_ucom.sc_dying = 1;
break;
}
return (rv);
}
#endif
static int
uftdi_detach(device_t self)
{
struct uftdi_softc *sc = device_get_softc(self);
int rv = 0;
DPRINTF(("uftdi_detach: sc=%p\n", sc));
sc->sc_ucom.sc_dying = 1;
rv = ucom_detach(&sc->sc_ucom);
return rv;
}
static int
uftdi_open(void *vsc, int portno)
{
struct uftdi_softc *sc = vsc;
struct ucom_softc *ucom = &sc->sc_ucom;
usb_device_request_t req;
usbd_status err;
struct termios t;
DPRINTF(("uftdi_open: sc=%p\n", sc));
if (ucom->sc_dying)
return (EIO);
/* Perform a full reset on the device */
req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
req.bRequest = FTDI_SIO_RESET;
USETW(req.wValue, FTDI_SIO_RESET_SIO);
USETW(req.wIndex, portno);
USETW(req.wLength, 0);
err = usbd_do_request(ucom->sc_udev, &req, NULL);
if (err)
return (EIO);
/* Set 9600 baud, 2 stop bits, no parity, 8 bits */
t.c_ospeed = 9600;
t.c_cflag = CSTOPB | CS8;
(void)uftdi_param(sc, portno, &t);
/* Turn on RTS/CTS flow control */
req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
req.bRequest = FTDI_SIO_SET_FLOW_CTRL;
USETW(req.wValue, 0);
USETW2(req.wIndex, FTDI_SIO_RTS_CTS_HS, portno);
USETW(req.wLength, 0);
err = usbd_do_request(ucom->sc_udev, &req, NULL);
if (err)
return (EIO);
return (0);
}
static void
uftdi_read(void *vsc, int portno, u_char **ptr, u_int32_t *count)
{
struct uftdi_softc *sc = vsc;
u_char msr, lsr;
unsigned l;
DPRINTFN(15,("uftdi_read: sc=%p, port=%d count=%d\n",
sc, portno, *count));
while (*count > 0) {
l = *count;
if (l > 64)
l = 64;
msr = FTDI_GET_MSR(*ptr);
lsr = FTDI_GET_LSR(*ptr);
if (sc->sc_msr != msr ||
(sc->sc_lsr & FTDI_LSR_MASK) != (lsr & FTDI_LSR_MASK)) {
DPRINTF(("uftdi_read: status change msr=0x%02x(0x%02x) "
"lsr=0x%02x(0x%02x)\n", msr, sc->sc_msr,
lsr, sc->sc_lsr));
sc->sc_msr = msr;
sc->sc_lsr = lsr;
ucom_status_change(&sc->sc_ucom);
}
if (l > 2)
ucomrxchars(&sc->sc_ucom, (*ptr) + 2, l - 2);
*ptr += l;
*count -= l;
}
}
static size_t
uftdi_write(void *vsc, int portno, struct tty *tp, u_char *to, u_int32_t count)
{
struct uftdi_softc *sc = vsc;
size_t l;
DPRINTFN(10,("uftdi_write: sc=%p, port=%d tp=%p, count=%u\n",
vsc, portno, tp, count));
/* Leave space for the length tag. */
l = ttydisc_getc(tp, to + sc->sc_hdrlen, count - sc->sc_hdrlen);
if (l == 0)
return (0);
/* Make length tag. */
if (sc->sc_hdrlen > 0)
*to = FTDI_OUT_TAG(l, portno);
return (l + sc->sc_hdrlen);
}
static void
uftdi_set(void *vsc, int portno, int reg, int onoff)
{
struct uftdi_softc *sc = vsc;
struct ucom_softc *ucom = vsc;
usb_device_request_t req;
int ctl;
DPRINTF(("uftdi_set: sc=%p, port=%d reg=%d onoff=%d\n", vsc, portno,
reg, onoff));
switch (reg) {
case UCOM_SET_DTR:
ctl = onoff ? FTDI_SIO_SET_DTR_HIGH : FTDI_SIO_SET_DTR_LOW;
break;
case UCOM_SET_RTS:
ctl = onoff ? FTDI_SIO_SET_RTS_HIGH : FTDI_SIO_SET_RTS_LOW;
break;
case UCOM_SET_BREAK:
uftdi_break(sc, portno, onoff);
return;
default:
return;
}
req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
req.bRequest = FTDI_SIO_MODEM_CTRL;
USETW(req.wValue, ctl);
USETW(req.wIndex, portno);
USETW(req.wLength, 0);
DPRINTFN(2,("uftdi_set: reqtype=0x%02x req=0x%02x value=0x%04x "
"index=0x%04x len=%d\n", req.bmRequestType, req.bRequest,
UGETW(req.wValue), UGETW(req.wIndex), UGETW(req.wLength)));
(void)usbd_do_request(ucom->sc_udev, &req, NULL);
}
static int
uftdi_param(void *vsc, int portno, struct termios *t)
{
struct uftdi_softc *sc = vsc;
struct ucom_softc *ucom = &sc->sc_ucom;
usb_device_request_t req;
usbd_status err;
int rate=0, data, flow;
DPRINTF(("uftdi_param: sc=%p\n", sc));
if (ucom->sc_dying)
return (EIO);
switch (sc->sc_type) {
case UFTDI_TYPE_SIO:
switch (t->c_ospeed) {
case 300: rate = ftdi_sio_b300; break;
case 600: rate = ftdi_sio_b600; break;
case 1200: rate = ftdi_sio_b1200; break;
case 2400: rate = ftdi_sio_b2400; break;
case 4800: rate = ftdi_sio_b4800; break;
case 9600: rate = ftdi_sio_b9600; break;
case 19200: rate = ftdi_sio_b19200; break;
case 38400: rate = ftdi_sio_b38400; break;
case 57600: rate = ftdi_sio_b57600; break;
case 115200: rate = ftdi_sio_b115200; break;
default:
return (EINVAL);
}
break;
case UFTDI_TYPE_8U232AM:
if (uftdi_8u232am_getrate(t->c_ospeed, &rate) == -1)
return (EINVAL);
break;
}
req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
req.bRequest = FTDI_SIO_SET_BAUD_RATE;
USETW(req.wValue, rate);
USETW(req.wIndex, portno);
USETW(req.wLength, 0);
DPRINTFN(2,("uftdi_param: reqtype=0x%02x req=0x%02x value=0x%04x "
"index=0x%04x len=%d\n", req.bmRequestType, req.bRequest,
UGETW(req.wValue), UGETW(req.wIndex), UGETW(req.wLength)));
err = usbd_do_request(ucom->sc_udev, &req, NULL);
if (err)
return (EIO);
if (ISSET(t->c_cflag, CSTOPB))
data = FTDI_SIO_SET_DATA_STOP_BITS_2;
else
data = FTDI_SIO_SET_DATA_STOP_BITS_1;
if (ISSET(t->c_cflag, PARENB)) {
if (ISSET(t->c_cflag, PARODD))
data |= FTDI_SIO_SET_DATA_PARITY_ODD;
else
data |= FTDI_SIO_SET_DATA_PARITY_EVEN;
} else
data |= FTDI_SIO_SET_DATA_PARITY_NONE;
switch (ISSET(t->c_cflag, CSIZE)) {
case CS5:
data |= FTDI_SIO_SET_DATA_BITS(5);
break;
case CS6:
data |= FTDI_SIO_SET_DATA_BITS(6);
break;
case CS7:
data |= FTDI_SIO_SET_DATA_BITS(7);
break;
case CS8:
data |= FTDI_SIO_SET_DATA_BITS(8);
break;
}
sc->last_lcr = data;
req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
req.bRequest = FTDI_SIO_SET_DATA;
USETW(req.wValue, data);
USETW(req.wIndex, portno);
USETW(req.wLength, 0);
DPRINTFN(2,("uftdi_param: reqtype=0x%02x req=0x%02x value=0x%04x "
"index=0x%04x len=%d\n", req.bmRequestType, req.bRequest,
UGETW(req.wValue), UGETW(req.wIndex), UGETW(req.wLength)));
err = usbd_do_request(ucom->sc_udev, &req, NULL);
if (err)
return (EIO);
if (ISSET(t->c_cflag, CRTSCTS)) {
flow = FTDI_SIO_RTS_CTS_HS;
USETW(req.wValue, 0);
} else if (ISSET(t->c_iflag, IXON|IXOFF)) {
flow = FTDI_SIO_XON_XOFF_HS;
USETW2(req.wValue, t->c_cc[VSTOP], t->c_cc[VSTART]);
} else {
flow = FTDI_SIO_DISABLE_FLOW_CTRL;
USETW(req.wValue, 0);
}
req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
req.bRequest = FTDI_SIO_SET_FLOW_CTRL;
USETW2(req.wIndex, flow, portno);
USETW(req.wLength, 0);
err = usbd_do_request(ucom->sc_udev, &req, NULL);
if (err)
return (EIO);
return (0);
}
void
uftdi_get_status(void *vsc, int portno, u_char *lsr, u_char *msr)
{
struct uftdi_softc *sc = vsc;
DPRINTF(("uftdi_status: msr=0x%02x lsr=0x%02x\n",
sc->sc_msr, sc->sc_lsr));
if (msr != NULL)
*msr = sc->sc_msr;
if (lsr != NULL)
*lsr = sc->sc_lsr;
}
void
uftdi_break(void *vsc, int portno, int onoff)
{
struct uftdi_softc *sc = vsc;
struct ucom_softc *ucom = vsc;
usb_device_request_t req;
int data;
DPRINTF(("uftdi_break: sc=%p, port=%d onoff=%d\n", vsc, portno,
onoff));
if (onoff) {
data = sc->last_lcr | FTDI_SIO_SET_BREAK;
} else {
data = sc->last_lcr;
}
req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
req.bRequest = FTDI_SIO_SET_DATA;
USETW(req.wValue, data);
USETW(req.wIndex, portno);
USETW(req.wLength, 0);
(void)usbd_do_request(ucom->sc_udev, &req, NULL);
}
static int
uftdi_8u232am_getrate(speed_t speed, int *rate)
{
/* Table of the nearest even powers-of-2 for values 0..15. */
static const unsigned char roundoff[16] = {
0, 2, 2, 4, 4, 4, 8, 8,
8, 8, 8, 8, 16, 16, 16, 16,
};
unsigned int d, freq;
int result;
if (speed <= 0)
return (-1);
/* Special cases for 2M and 3M. */
if (speed >= 3000000 * 100 / 103 &&
speed <= 3000000 * 100 / 97) {
result = 0;
goto done;
}
if (speed >= 2000000 * 100 / 103 &&
speed <= 2000000 * 100 / 97) {
result = 1;
goto done;
}
d = (FTDI_8U232AM_FREQ << 4) / speed;
d = (d & ~15) + roundoff[d & 15];
if (d < FTDI_8U232AM_MIN_DIV)
d = FTDI_8U232AM_MIN_DIV;
else if (d > FTDI_8U232AM_MAX_DIV)
d = FTDI_8U232AM_MAX_DIV;
/*
* Calculate the frequency needed for d to exactly divide down
* to our target speed, and check that the actual frequency is
* within 3% of this.
*/
freq = speed * d;
if (freq < (quad_t)(FTDI_8U232AM_FREQ << 4) * 100 / 103 ||
freq > (quad_t)(FTDI_8U232AM_FREQ << 4) * 100 / 97)
return (-1);
/*
* Pack the divisor into the resultant value. The lower
* 14-bits hold the integral part, while the upper 2 bits
* encode the fractional component: either 0, 0.5, 0.25, or
* 0.125.
*/
result = d >> 4;
if (d & 8)
result |= 0x4000;
else if (d & 4)
result |= 0x8000;
else if (d & 2)
result |= 0xc000;
done:
*rate = result;
return (0);
}
static device_method_t uftdi_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, uftdi_match),
DEVMETHOD(device_attach, uftdi_attach),
DEVMETHOD(device_detach, uftdi_detach),
{ 0, 0 }
};
static driver_t uftdi_driver = {
"ucom",
uftdi_methods,
sizeof (struct uftdi_softc)
};
DRIVER_MODULE(uftdi, uhub, uftdi_driver, ucom_devclass, usbd_driver_load, 0);
MODULE_DEPEND(uftdi, usb, 1, 1, 1);
MODULE_DEPEND(uftdi, ucom,UCOM_MINVER, UCOM_PREFVER, UCOM_MAXVER);
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