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NetBSD/sys/dev/usb/uftdi.c

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/* $NetBSD: uftdi.c,v 1.4 2000/12/08 01:53:44 augustss 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.
*/
/*
* FTDI FT8U100AX serial adapter driver
*/
/*
* XXX This driver will not support multiple serial ports.
* XXX The ucom layer needs to be extended first.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/conf.h>
#include <sys/tty.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbhid.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdi_util.h>
#include <dev/usb/usbdevs.h>
#include <dev/usb/ucomvar.h>
#include <dev/usb/uftdireg.h>
#ifdef UFTDI_DEBUG
#define DPRINTF(x) if (uftdidebug) printf x
#define DPRINTFN(n,x) if (uftdidebug>(n)) printf x
int uftdidebug = 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 64
#define UFTDIOBUFSIZE 64
struct uftdi_softc {
USBBASEDEVICE sc_dev; /* base device */
usbd_device_handle sc_udev; /* device */
usbd_interface_handle sc_iface; /* interface */
u_char sc_msr;
u_char sc_lsr;
device_ptr_t sc_subdev;
u_char sc_dying;
};
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 void uftdi_write(void *sc, int portno, u_char *to, u_char *from,
u_int32_t *count);
struct ucom_methods uftdi_methods = {
uftdi_get_status,
uftdi_set,
uftdi_param,
NULL,
uftdi_open,
NULL,
uftdi_read,
uftdi_write,
};
USB_DECLARE_DRIVER(uftdi);
USB_MATCH(uftdi)
{
USB_MATCH_START(uftdi, uaa);
if (uaa->iface != NULL)
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)
return (UMATCH_VENDOR_PRODUCT);
return (UMATCH_NONE);
}
USB_ATTACH(uftdi)
{
USB_ATTACH_START(uftdi, sc, uaa);
usbd_device_handle dev = uaa->device;
usbd_interface_handle iface;
usb_interface_descriptor_t *id;
usb_endpoint_descriptor_t *ed;
char devinfo[1024];
char *devname = USBDEVNAME(sc->sc_dev);
int i;
usbd_status err;
struct ucom_attach_args uca;
DPRINTFN(10,("\nuftdi_attach: sc=%p\n", sc));
/* Move the device into the configured state. */
err = usbd_set_config_index(dev, UFTDI_CONFIG_INDEX, 1);
if (err) {
printf("\n%s: failed to set configuration, err=%s\n",
devname, usbd_errstr(err));
goto bad;
}
err = usbd_device2interface_handle(dev, UFTDI_IFACE_INDEX, &iface);
if (err) {
printf("\n%s: failed to get interface, err=%s\n",
devname, usbd_errstr(err));
goto bad;
}
usbd_devinfo(dev, 0, devinfo);
USB_ATTACH_SETUP;
printf("%s: %s\n", devname, devinfo);
id = usbd_get_interface_descriptor(iface);
sc->sc_udev = dev;
sc->sc_iface = iface;
uca.bulkin = uca.bulkout = -1;
for (i = 0; i < id->bNumEndpoints; i++) {
int addr, dir, attr;
ed = usbd_interface2endpoint_descriptor(iface, i);
if (ed == NULL) {
printf("%s: could not read endpoint descriptor"
": %s\n", devname, usbd_errstr(err));
goto bad;
}
addr = ed->bEndpointAddress;
dir = UE_GET_DIR(ed->bEndpointAddress);
attr = ed->bmAttributes & UE_XFERTYPE;
if (dir == UE_DIR_IN && attr == UE_BULK)
uca.bulkin = addr;
else if (dir == UE_DIR_OUT && attr == UE_BULK)
uca.bulkout = addr;
else {
printf("%s: unexpected endpoint\n", devname);
goto bad;
}
}
if (uca.bulkin == -1) {
printf("%s: Could not find data bulk in\n",
USBDEVNAME(sc->sc_dev));
goto bad;
}
if (uca.bulkout == -1) {
printf("%s: Could not find data bulk out\n",
USBDEVNAME(sc->sc_dev));
goto bad;
}
uca.portno = FTDI_PIT_SIOA;
/* bulkin, bulkout set above */
uca.ibufsize = UFTDIIBUFSIZE;
uca.obufsize = UFTDIOBUFSIZE - 1;
uca.ibufsizepad = UFTDIIBUFSIZE;
uca.opkthdrlen = 1;
uca.device = dev;
uca.iface = iface;
uca.methods = &uftdi_methods;
uca.arg = sc;
DPRINTF(("uftdi: in=0x%x out=0x%x\n", uca.bulkin, uca.bulkout));
sc->sc_subdev = config_found_sm(self, &uca, ucomprint, ucomsubmatch);
USB_ATTACH_SUCCESS_RETURN;
bad:
DPRINTF(("uftdi_attach: ATTACH ERROR\n"));
sc->sc_dying = 1;
USB_ATTACH_ERROR_RETURN;
}
int
uftdi_activate(device_ptr_t self, enum devact act)
{
struct uftdi_softc *sc = (struct uftdi_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);
}
int
uftdi_detach(device_ptr_t self, int flags)
{
struct uftdi_softc *sc = (struct uftdi_softc *)self;
int rv = 0;
DPRINTF(("uftdi_detach: sc=%p flags=%d\n", sc, flags));
sc->sc_dying = 1;
if (sc->sc_subdev != NULL) {
rv = config_detach(sc->sc_subdev, flags);
sc->sc_subdev = NULL;
}
return (0);
}
Static int
uftdi_open(void *vsc, int portno)
{
struct uftdi_softc *sc = vsc;
usb_device_request_t req;
usbd_status err;
struct termios t;
DPRINTF(("uftdi_open: sc=%p\n", sc));
if (sc->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(sc->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(sc->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;
DPRINTFN(15,("uftdi_read: sc=%p, port=%d count=%d\n", sc, portno,
*count));
msr = FTDI_GET_MSR(*ptr);
lsr = FTDI_GET_LSR(*ptr);
#ifdef UFTDI_DEBUG
if (*count != 2)
DPRINTFN(10,("uftdi_read: sc=%p, port=%d count=%d data[0]="
"0x%02x\n", sc, portno, *count, (*ptr)[2]));
#endif
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((struct ucom_softc *)sc->sc_subdev);
}
/* Pick up status and adjust data part. */
*ptr += 2;
*count -= 2;
}
Static void
uftdi_write(void *vsc, int portno, u_char *to, u_char *from, u_int32_t *count)
{
DPRINTFN(10,("uftdi_write: sc=%p, port=%d count=%u data[0]=0x%02x\n",
vsc, portno, *count, from[0]));
/* Make length tag and copy data */
*to = FTDI_OUT_TAG(*count, portno);
memcpy(to+1, from, *count);
++*count;
}
Static void
uftdi_set(void *vsc, int portno, int reg, int onoff)
{
struct uftdi_softc *sc = 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:
/* XXX how do we set break? */
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(sc->sc_udev, &req, NULL);
}
Static int
uftdi_param(void *vsc, int portno, struct termios *t)
{
struct uftdi_softc *sc = vsc;
usb_device_request_t req;
usbd_status err;
int rate, data;
DPRINTF(("uftdi_param: sc=%p\n", sc));
if (sc->sc_dying)
return (EIO);
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);
}
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(sc->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;
}
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(sc->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;
}
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