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| Current File : //sys/amd64/compile/hs32/modules/usr/src/sys/modules/i2c/iicbus/@/dev/usb/serial/uftdi.c |
/* $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.
*
* 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: release/9.1.0/sys/dev/usb/serial/uftdi.c 237380 2012-06-21 11:06:29Z marius $");
/*
* NOTE: all function names beginning like "uftdi_cfg_" can only
* be called from within the config thread function !
*/
/*
* FTDI FT2232x, FT8U100AX and FT8U232AM serial adapter driver
*/
#include <sys/stdint.h>
#include <sys/stddef.h>
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/types.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/module.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/condvar.h>
#include <sys/sysctl.h>
#include <sys/sx.h>
#include <sys/unistd.h>
#include <sys/callout.h>
#include <sys/malloc.h>
#include <sys/priv.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdi_util.h>
#include "usbdevs.h"
#define USB_DEBUG_VAR uftdi_debug
#include <dev/usb/usb_debug.h>
#include <dev/usb/usb_process.h>
#include <dev/usb/serial/usb_serial.h>
#include <dev/usb/serial/uftdi_reg.h>
#ifdef USB_DEBUG
static int uftdi_debug = 0;
SYSCTL_NODE(_hw_usb, OID_AUTO, uftdi, CTLFLAG_RW, 0, "USB uftdi");
SYSCTL_INT(_hw_usb_uftdi, OID_AUTO, debug, CTLFLAG_RW,
&uftdi_debug, 0, "Debug level");
#endif
#define UFTDI_CONFIG_INDEX 0
#define UFTDI_IFACE_INDEX_JTAG 0
#define UFTDI_OBUFSIZE 64 /* bytes, cannot be increased due to
* do size encoding */
enum {
UFTDI_BULK_DT_WR,
UFTDI_BULK_DT_RD,
UFTDI_N_TRANSFER,
};
struct uftdi_softc {
struct ucom_super_softc sc_super_ucom;
struct ucom_softc sc_ucom;
struct usb_device *sc_udev;
struct usb_xfer *sc_xfer[UFTDI_N_TRANSFER];
device_t sc_dev;
struct mtx sc_mtx;
uint32_t sc_unit;
uint16_t sc_last_lcr;
uint8_t sc_type;
uint8_t sc_iface_index;
uint8_t sc_hdrlen;
uint8_t sc_msr;
uint8_t sc_lsr;
uint8_t sc_name[16];
};
struct uftdi_param_config {
uint16_t rate;
uint16_t lcr;
uint8_t v_start;
uint8_t v_stop;
uint8_t v_flow;
};
/* prototypes */
static device_probe_t uftdi_probe;
static device_attach_t uftdi_attach;
static device_detach_t uftdi_detach;
static usb_callback_t uftdi_write_callback;
static usb_callback_t uftdi_read_callback;
static void uftdi_cfg_open(struct ucom_softc *);
static void uftdi_cfg_set_dtr(struct ucom_softc *, uint8_t);
static void uftdi_cfg_set_rts(struct ucom_softc *, uint8_t);
static void uftdi_cfg_set_break(struct ucom_softc *, uint8_t);
static int uftdi_set_parm_soft(struct termios *,
struct uftdi_param_config *, uint8_t);
static int uftdi_pre_param(struct ucom_softc *, struct termios *);
static void uftdi_cfg_param(struct ucom_softc *, struct termios *);
static void uftdi_cfg_get_status(struct ucom_softc *, uint8_t *,
uint8_t *);
static void uftdi_start_read(struct ucom_softc *);
static void uftdi_stop_read(struct ucom_softc *);
static void uftdi_start_write(struct ucom_softc *);
static void uftdi_stop_write(struct ucom_softc *);
static uint8_t uftdi_8u232am_getrate(uint32_t, uint16_t *);
static void uftdi_poll(struct ucom_softc *ucom);
static const struct usb_config uftdi_config[UFTDI_N_TRANSFER] = {
[UFTDI_BULK_DT_WR] = {
.type = UE_BULK,
.endpoint = UE_ADDR_ANY,
.direction = UE_DIR_OUT,
.bufsize = UFTDI_OBUFSIZE,
.flags = {.pipe_bof = 1,},
.callback = &uftdi_write_callback,
},
[UFTDI_BULK_DT_RD] = {
.type = UE_BULK,
.endpoint = UE_ADDR_ANY,
.direction = UE_DIR_IN,
.bufsize = 0, /* use wMaxPacketSize */
.flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
.callback = &uftdi_read_callback,
},
};
static const struct ucom_callback uftdi_callback = {
.ucom_cfg_get_status = &uftdi_cfg_get_status,
.ucom_cfg_set_dtr = &uftdi_cfg_set_dtr,
.ucom_cfg_set_rts = &uftdi_cfg_set_rts,
.ucom_cfg_set_break = &uftdi_cfg_set_break,
.ucom_cfg_param = &uftdi_cfg_param,
.ucom_cfg_open = &uftdi_cfg_open,
.ucom_pre_param = &uftdi_pre_param,
.ucom_start_read = &uftdi_start_read,
.ucom_stop_read = &uftdi_stop_read,
.ucom_start_write = &uftdi_start_write,
.ucom_stop_write = &uftdi_stop_write,
.ucom_poll = &uftdi_poll,
};
static device_method_t uftdi_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, uftdi_probe),
DEVMETHOD(device_attach, uftdi_attach),
DEVMETHOD(device_detach, uftdi_detach),
DEVMETHOD_END
};
static devclass_t uftdi_devclass;
static driver_t uftdi_driver = {
.name = "uftdi",
.methods = uftdi_methods,
.size = sizeof(struct uftdi_softc),
};
DRIVER_MODULE(uftdi, uhub, uftdi_driver, uftdi_devclass, NULL, NULL);
MODULE_DEPEND(uftdi, ucom, 1, 1, 1);
MODULE_DEPEND(uftdi, usb, 1, 1, 1);
MODULE_VERSION(uftdi, 1);
static const STRUCT_USB_HOST_ID uftdi_devs[] = {
#define UFTDI_DEV(v, p, i) \
{ USB_VPI(USB_VENDOR_##v, USB_PRODUCT_##v##_##p, i) }
UFTDI_DEV(ATMEL, STK541, UFTDI_TYPE_8U232AM),
UFTDI_DEV(BBELECTRONICS, USOTL4, UFTDI_TYPE_8U232AM),
UFTDI_DEV(DRESDENELEKTRONIK, SENSORTERMINALBOARD,
UFTDI_TYPE_8U232AM),
UFTDI_DEV(DRESDENELEKTRONIK, WIRELESSHANDHELDTERMINAL,
UFTDI_TYPE_8U232AM),
UFTDI_DEV(FALCOM, TWIST, UFTDI_TYPE_8U232AM),
UFTDI_DEV(FTDI, BEAGLEBONE, UFTDI_TYPE_8U232AM),
UFTDI_DEV(FTDI, CFA_631, UFTDI_TYPE_8U232AM),
UFTDI_DEV(FTDI, CFA_632, UFTDI_TYPE_8U232AM),
UFTDI_DEV(FTDI, CFA_633, UFTDI_TYPE_8U232AM),
UFTDI_DEV(FTDI, CFA_634, UFTDI_TYPE_8U232AM),
UFTDI_DEV(FTDI, CFA_635, UFTDI_TYPE_8U232AM),
UFTDI_DEV(FTDI, CTI_USB_MINI_485, UFTDI_TYPE_8U232AM),
UFTDI_DEV(FTDI, CTI_USB_NANO_485, UFTDI_TYPE_8U232AM),
UFTDI_DEV(FTDI, EISCOU, UFTDI_TYPE_8U232AM),
UFTDI_DEV(FTDI, EMCU2D, UFTDI_TYPE_8U232AM),
UFTDI_DEV(FTDI, EMCU2H, UFTDI_TYPE_8U232AM),
UFTDI_DEV(FTDI, GAMMASCOUT, UFTDI_TYPE_8U232AM),
UFTDI_DEV(FTDI, KBS, UFTDI_TYPE_8U232AM),
UFTDI_DEV(FTDI, LK202, UFTDI_TYPE_8U232AM),
UFTDI_DEV(FTDI, LK204, UFTDI_TYPE_8U232AM),
UFTDI_DEV(FTDI, MAXSTREAM, UFTDI_TYPE_8U232AM),
UFTDI_DEV(FTDI, MX2_3, UFTDI_TYPE_8U232AM),
UFTDI_DEV(FTDI, MX4_5, UFTDI_TYPE_8U232AM),
UFTDI_DEV(FTDI, PCMSFU, UFTDI_TYPE_8U232AM),
UFTDI_DEV(FTDI, SEMC_DSS20, UFTDI_TYPE_8U232AM),
UFTDI_DEV(FTDI, SERIAL_2232C, UFTDI_TYPE_8U232AM),
UFTDI_DEV(FTDI, SERIAL_2232D, UFTDI_TYPE_8U232AM),
UFTDI_DEV(FTDI, SERIAL_4232H, UFTDI_TYPE_8U232AM),
UFTDI_DEV(FTDI, SERIAL_8U100AX, UFTDI_TYPE_SIO),
UFTDI_DEV(FTDI, SERIAL_8U232AM, UFTDI_TYPE_8U232AM),
UFTDI_DEV(FTDI, SERIAL_8U232AM4, UFTDI_TYPE_8U232AM),
UFTDI_DEV(FTDI, TACTRIX_OPENPORT_13M, UFTDI_TYPE_8U232AM),
UFTDI_DEV(FTDI, TACTRIX_OPENPORT_13S, UFTDI_TYPE_8U232AM),
UFTDI_DEV(FTDI, TACTRIX_OPENPORT_13U, UFTDI_TYPE_8U232AM),
UFTDI_DEV(FTDI, TURTELIZER2, UFTDI_TYPE_8U232AM | UFTDI_FLAG_JTAG),
UFTDI_DEV(FTDI, UOPTBR, UFTDI_TYPE_8U232AM),
UFTDI_DEV(FTDI, USBSERIAL, UFTDI_TYPE_8U232AM),
UFTDI_DEV(FTDI, USB_UIRT, UFTDI_TYPE_8U232AM),
UFTDI_DEV(INTREPIDCS, NEOVI, UFTDI_TYPE_8U232AM),
UFTDI_DEV(INTREPIDCS, VALUECAN, UFTDI_TYPE_8U232AM),
UFTDI_DEV(MARVELL, SHEEVAPLUG, UFTDI_TYPE_8U232AM),
UFTDI_DEV(MATRIXORBITAL, MOUA, UFTDI_TYPE_8U232AM),
UFTDI_DEV(MELCO, PCOPRS1, UFTDI_TYPE_8U232AM),
UFTDI_DEV(RATOC, REXUSB60F, UFTDI_TYPE_8U232AM),
UFTDI_DEV(SIIG2, US2308, UFTDI_TYPE_8U232AM)
#undef UFTDI_DEV
};
static int
uftdi_probe(device_t dev)
{
struct usb_attach_arg *uaa = device_get_ivars(dev);
const struct usb_device_id *id;
if (uaa->usb_mode != USB_MODE_HOST) {
return (ENXIO);
}
if (uaa->info.bConfigIndex != UFTDI_CONFIG_INDEX) {
return (ENXIO);
}
/*
* Attach to all present interfaces unless this is a JTAG one, which
* we leave for userland.
*/
id = usbd_lookup_id_by_info(uftdi_devs, sizeof(uftdi_devs),
&uaa->info);
if (id == NULL)
return (ENXIO);
if ((id->driver_info & UFTDI_FLAG_JTAG) != 0 &&
uaa->info.bIfaceIndex == UFTDI_IFACE_INDEX_JTAG) {
printf("%s: skipping JTAG interface at %u.%u\n",
device_get_name(dev), usbd_get_bus_index(uaa->device),
usbd_get_device_index(uaa->device));
return (ENXIO);
}
uaa->driver_info = id->driver_info;
return (BUS_PROBE_SPECIFIC);
}
static int
uftdi_attach(device_t dev)
{
struct usb_attach_arg *uaa = device_get_ivars(dev);
struct uftdi_softc *sc = device_get_softc(dev);
int error;
sc->sc_udev = uaa->device;
sc->sc_dev = dev;
sc->sc_unit = device_get_unit(dev);
device_set_usb_desc(dev);
mtx_init(&sc->sc_mtx, "uftdi", NULL, MTX_DEF);
snprintf(sc->sc_name, sizeof(sc->sc_name),
"%s", device_get_nameunit(dev));
DPRINTF("\n");
sc->sc_iface_index = uaa->info.bIfaceIndex;
sc->sc_type = USB_GET_DRIVER_INFO(uaa) & UFTDI_TYPE_MASK;
switch (sc->sc_type) {
case UFTDI_TYPE_SIO:
sc->sc_hdrlen = 1;
break;
case UFTDI_TYPE_8U232AM:
default:
sc->sc_hdrlen = 0;
break;
}
error = usbd_transfer_setup(uaa->device,
&sc->sc_iface_index, sc->sc_xfer, uftdi_config,
UFTDI_N_TRANSFER, sc, &sc->sc_mtx);
if (error) {
device_printf(dev, "allocating USB "
"transfers failed\n");
goto detach;
}
sc->sc_ucom.sc_portno = FTDI_PIT_SIOA + uaa->info.bIfaceNum;
/* clear stall at first run */
mtx_lock(&sc->sc_mtx);
usbd_xfer_set_stall(sc->sc_xfer[UFTDI_BULK_DT_WR]);
usbd_xfer_set_stall(sc->sc_xfer[UFTDI_BULK_DT_RD]);
mtx_unlock(&sc->sc_mtx);
/* set a valid "lcr" value */
sc->sc_last_lcr =
(FTDI_SIO_SET_DATA_STOP_BITS_2 |
FTDI_SIO_SET_DATA_PARITY_NONE |
FTDI_SIO_SET_DATA_BITS(8));
error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc,
&uftdi_callback, &sc->sc_mtx);
if (error) {
goto detach;
}
ucom_set_pnpinfo_usb(&sc->sc_super_ucom, dev);
return (0); /* success */
detach:
uftdi_detach(dev);
return (ENXIO);
}
static int
uftdi_detach(device_t dev)
{
struct uftdi_softc *sc = device_get_softc(dev);
ucom_detach(&sc->sc_super_ucom, &sc->sc_ucom);
usbd_transfer_unsetup(sc->sc_xfer, UFTDI_N_TRANSFER);
mtx_destroy(&sc->sc_mtx);
return (0);
}
static void
uftdi_cfg_open(struct ucom_softc *ucom)
{
struct uftdi_softc *sc = ucom->sc_parent;
uint16_t wIndex = ucom->sc_portno;
struct usb_device_request req;
DPRINTF("");
/* 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, wIndex);
USETW(req.wLength, 0);
ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
&req, NULL, 0, 1000);
/* 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, wIndex);
USETW(req.wLength, 0);
ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
&req, NULL, 0, 1000);
/*
* NOTE: with the new UCOM layer there will always be a
* "uftdi_cfg_param()" call after "open()", so there is no need for
* "open()" to configure anything
*/
}
static void
uftdi_write_callback(struct usb_xfer *xfer, usb_error_t error)
{
struct uftdi_softc *sc = usbd_xfer_softc(xfer);
struct usb_page_cache *pc;
uint32_t actlen;
uint8_t buf[1];
switch (USB_GET_STATE(xfer)) {
case USB_ST_SETUP:
case USB_ST_TRANSFERRED:
tr_setup:
pc = usbd_xfer_get_frame(xfer, 0);
if (ucom_get_data(&sc->sc_ucom, pc,
sc->sc_hdrlen, UFTDI_OBUFSIZE - sc->sc_hdrlen,
&actlen)) {
if (sc->sc_hdrlen > 0) {
buf[0] =
FTDI_OUT_TAG(actlen, sc->sc_ucom.sc_portno);
usbd_copy_in(pc, 0, buf, 1);
}
usbd_xfer_set_frame_len(xfer, 0, actlen + sc->sc_hdrlen);
usbd_transfer_submit(xfer);
}
return;
default: /* Error */
if (error != USB_ERR_CANCELLED) {
/* try to clear stall first */
usbd_xfer_set_stall(xfer);
goto tr_setup;
}
return;
}
}
static void
uftdi_read_callback(struct usb_xfer *xfer, usb_error_t error)
{
struct uftdi_softc *sc = usbd_xfer_softc(xfer);
struct usb_page_cache *pc;
uint8_t buf[2];
uint8_t ftdi_msr;
uint8_t msr;
uint8_t lsr;
int actlen;
usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
switch (USB_GET_STATE(xfer)) {
case USB_ST_TRANSFERRED:
if (actlen < 2) {
goto tr_setup;
}
pc = usbd_xfer_get_frame(xfer, 0);
usbd_copy_out(pc, 0, buf, 2);
ftdi_msr = FTDI_GET_MSR(buf);
lsr = FTDI_GET_LSR(buf);
msr = 0;
if (ftdi_msr & FTDI_SIO_CTS_MASK)
msr |= SER_CTS;
if (ftdi_msr & FTDI_SIO_DSR_MASK)
msr |= SER_DSR;
if (ftdi_msr & FTDI_SIO_RI_MASK)
msr |= SER_RI;
if (ftdi_msr & FTDI_SIO_RLSD_MASK)
msr |= SER_DCD;
if ((sc->sc_msr != msr) ||
((sc->sc_lsr & FTDI_LSR_MASK) != (lsr & FTDI_LSR_MASK))) {
DPRINTF("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);
}
actlen -= 2;
if (actlen > 0) {
ucom_put_data(&sc->sc_ucom, pc, 2, actlen);
}
case USB_ST_SETUP:
tr_setup:
usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
usbd_transfer_submit(xfer);
return;
default: /* Error */
if (error != USB_ERR_CANCELLED) {
/* try to clear stall first */
usbd_xfer_set_stall(xfer);
goto tr_setup;
}
return;
}
}
static void
uftdi_cfg_set_dtr(struct ucom_softc *ucom, uint8_t onoff)
{
struct uftdi_softc *sc = ucom->sc_parent;
uint16_t wIndex = ucom->sc_portno;
uint16_t wValue;
struct usb_device_request req;
wValue = onoff ? FTDI_SIO_SET_DTR_HIGH : FTDI_SIO_SET_DTR_LOW;
req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
req.bRequest = FTDI_SIO_MODEM_CTRL;
USETW(req.wValue, wValue);
USETW(req.wIndex, wIndex);
USETW(req.wLength, 0);
ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
&req, NULL, 0, 1000);
}
static void
uftdi_cfg_set_rts(struct ucom_softc *ucom, uint8_t onoff)
{
struct uftdi_softc *sc = ucom->sc_parent;
uint16_t wIndex = ucom->sc_portno;
uint16_t wValue;
struct usb_device_request req;
wValue = onoff ? FTDI_SIO_SET_RTS_HIGH : FTDI_SIO_SET_RTS_LOW;
req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
req.bRequest = FTDI_SIO_MODEM_CTRL;
USETW(req.wValue, wValue);
USETW(req.wIndex, wIndex);
USETW(req.wLength, 0);
ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
&req, NULL, 0, 1000);
}
static void
uftdi_cfg_set_break(struct ucom_softc *ucom, uint8_t onoff)
{
struct uftdi_softc *sc = ucom->sc_parent;
uint16_t wIndex = ucom->sc_portno;
uint16_t wValue;
struct usb_device_request req;
if (onoff) {
sc->sc_last_lcr |= FTDI_SIO_SET_BREAK;
} else {
sc->sc_last_lcr &= ~FTDI_SIO_SET_BREAK;
}
wValue = sc->sc_last_lcr;
req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
req.bRequest = FTDI_SIO_SET_DATA;
USETW(req.wValue, wValue);
USETW(req.wIndex, wIndex);
USETW(req.wLength, 0);
ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
&req, NULL, 0, 1000);
}
static int
uftdi_set_parm_soft(struct termios *t,
struct uftdi_param_config *cfg, uint8_t type)
{
memset(cfg, 0, sizeof(*cfg));
switch (type) {
case UFTDI_TYPE_SIO:
switch (t->c_ospeed) {
case 300:
cfg->rate = ftdi_sio_b300;
break;
case 600:
cfg->rate = ftdi_sio_b600;
break;
case 1200:
cfg->rate = ftdi_sio_b1200;
break;
case 2400:
cfg->rate = ftdi_sio_b2400;
break;
case 4800:
cfg->rate = ftdi_sio_b4800;
break;
case 9600:
cfg->rate = ftdi_sio_b9600;
break;
case 19200:
cfg->rate = ftdi_sio_b19200;
break;
case 38400:
cfg->rate = ftdi_sio_b38400;
break;
case 57600:
cfg->rate = ftdi_sio_b57600;
break;
case 115200:
cfg->rate = ftdi_sio_b115200;
break;
default:
return (EINVAL);
}
break;
case UFTDI_TYPE_8U232AM:
if (uftdi_8u232am_getrate(t->c_ospeed, &cfg->rate)) {
return (EINVAL);
}
break;
}
if (t->c_cflag & CSTOPB)
cfg->lcr = FTDI_SIO_SET_DATA_STOP_BITS_2;
else
cfg->lcr = FTDI_SIO_SET_DATA_STOP_BITS_1;
if (t->c_cflag & PARENB) {
if (t->c_cflag & PARODD) {
cfg->lcr |= FTDI_SIO_SET_DATA_PARITY_ODD;
} else {
cfg->lcr |= FTDI_SIO_SET_DATA_PARITY_EVEN;
}
} else {
cfg->lcr |= FTDI_SIO_SET_DATA_PARITY_NONE;
}
switch (t->c_cflag & CSIZE) {
case CS5:
cfg->lcr |= FTDI_SIO_SET_DATA_BITS(5);
break;
case CS6:
cfg->lcr |= FTDI_SIO_SET_DATA_BITS(6);
break;
case CS7:
cfg->lcr |= FTDI_SIO_SET_DATA_BITS(7);
break;
case CS8:
cfg->lcr |= FTDI_SIO_SET_DATA_BITS(8);
break;
}
if (t->c_cflag & CRTSCTS) {
cfg->v_flow = FTDI_SIO_RTS_CTS_HS;
} else if (t->c_iflag & (IXON | IXOFF)) {
cfg->v_flow = FTDI_SIO_XON_XOFF_HS;
cfg->v_start = t->c_cc[VSTART];
cfg->v_stop = t->c_cc[VSTOP];
} else {
cfg->v_flow = FTDI_SIO_DISABLE_FLOW_CTRL;
}
return (0);
}
static int
uftdi_pre_param(struct ucom_softc *ucom, struct termios *t)
{
struct uftdi_softc *sc = ucom->sc_parent;
struct uftdi_param_config cfg;
DPRINTF("\n");
return (uftdi_set_parm_soft(t, &cfg, sc->sc_type));
}
static void
uftdi_cfg_param(struct ucom_softc *ucom, struct termios *t)
{
struct uftdi_softc *sc = ucom->sc_parent;
uint16_t wIndex = ucom->sc_portno;
struct uftdi_param_config cfg;
struct usb_device_request req;
if (uftdi_set_parm_soft(t, &cfg, sc->sc_type)) {
/* should not happen */
return;
}
sc->sc_last_lcr = cfg.lcr;
DPRINTF("\n");
req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
req.bRequest = FTDI_SIO_SET_BAUD_RATE;
USETW(req.wValue, cfg.rate);
USETW(req.wIndex, wIndex);
USETW(req.wLength, 0);
ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
&req, NULL, 0, 1000);
req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
req.bRequest = FTDI_SIO_SET_DATA;
USETW(req.wValue, cfg.lcr);
USETW(req.wIndex, wIndex);
USETW(req.wLength, 0);
ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
&req, NULL, 0, 1000);
req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
req.bRequest = FTDI_SIO_SET_FLOW_CTRL;
USETW2(req.wValue, cfg.v_stop, cfg.v_start);
USETW2(req.wIndex, cfg.v_flow, wIndex);
USETW(req.wLength, 0);
ucom_cfg_do_request(sc->sc_udev, &sc->sc_ucom,
&req, NULL, 0, 1000);
}
static void
uftdi_cfg_get_status(struct ucom_softc *ucom, uint8_t *lsr, uint8_t *msr)
{
struct uftdi_softc *sc = ucom->sc_parent;
DPRINTF("msr=0x%02x lsr=0x%02x\n",
sc->sc_msr, sc->sc_lsr);
*msr = sc->sc_msr;
*lsr = sc->sc_lsr;
}
static void
uftdi_start_read(struct ucom_softc *ucom)
{
struct uftdi_softc *sc = ucom->sc_parent;
usbd_transfer_start(sc->sc_xfer[UFTDI_BULK_DT_RD]);
}
static void
uftdi_stop_read(struct ucom_softc *ucom)
{
struct uftdi_softc *sc = ucom->sc_parent;
usbd_transfer_stop(sc->sc_xfer[UFTDI_BULK_DT_RD]);
}
static void
uftdi_start_write(struct ucom_softc *ucom)
{
struct uftdi_softc *sc = ucom->sc_parent;
usbd_transfer_start(sc->sc_xfer[UFTDI_BULK_DT_WR]);
}
static void
uftdi_stop_write(struct ucom_softc *ucom)
{
struct uftdi_softc *sc = ucom->sc_parent;
usbd_transfer_stop(sc->sc_xfer[UFTDI_BULK_DT_WR]);
}
/*------------------------------------------------------------------------*
* uftdi_8u232am_getrate
*
* Return values:
* 0: Success
* Else: Failure
*------------------------------------------------------------------------*/
static uint8_t
uftdi_8u232am_getrate(uint32_t speed, uint16_t *rate)
{
/* Table of the nearest even powers-of-2 for values 0..15. */
static const uint8_t roundoff[16] = {
0, 2, 2, 4, 4, 4, 8, 8,
8, 8, 8, 8, 16, 16, 16, 16,
};
uint32_t d;
uint32_t freq;
uint16_t result;
if ((speed < 178) || (speed > ((3000000 * 100) / 97)))
return (1); /* prevent numerical overflow */
/* 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 < ((FTDI_8U232AM_FREQ * 1600ULL) / 103)) ||
(freq > ((FTDI_8U232AM_FREQ * 1600ULL) / 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 void
uftdi_poll(struct ucom_softc *ucom)
{
struct uftdi_softc *sc = ucom->sc_parent;
usbd_transfer_poll(sc->sc_xfer, UFTDI_N_TRANSFER);
}