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/* $OpenBSD: uark.c,v 1.14 2010/09/24 08:33:59 yuo Exp $ */
/*
* Copyright (c) 2006 Jonathan Gray <jsg@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/conf.h>
#include <sys/tty.h>
#include <sys/device.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdi_util.h>
#include <dev/usb/usbdevs.h>
#include <dev/usb/usbdevs.h>
#include <dev/usb/ucomvar.h>
#ifdef UARK_DEBUG
#define DPRINTFN(n, x) do { if (uarkdebug > (n)) printf x; } while (0)
int uarkebug = 0;
#else
#define DPRINTFN(n, x)
#endif
#define DPRINTF(x) DPRINTFN(0, x)
#define UARKBUFSZ 256
#define UARK_CONFIG_NO 0
#define UARK_IFACE_NO 0
#define UARK_SET_DATA_BITS(x) (x - 5)
#define UARK_PARITY_NONE 0x00
#define UARK_PARITY_ODD 0x08
#define UARK_PARITY_EVEN 0x18
#define UARK_STOP_BITS_1 0x00
#define UARK_STOP_BITS_2 0x04
#define UARK_BAUD_REF 3000000
#define UARK_WRITE 0x40
#define UARK_READ 0xc0
#define UARK_REQUEST 0xfe
struct uark_softc {
struct device sc_dev;
usbd_device_handle sc_udev;
usbd_interface_handle sc_iface;
struct device *sc_subdev;
u_char sc_msr;
u_char sc_lsr;
u_char sc_dying;
};
void uark_get_status(void *, int portno, u_char *lsr, u_char *msr);
void uark_set(void *, int, int, int);
int uark_param(void *, int, struct termios *);
void uark_break(void *, int, int);
int uark_cmd(struct uark_softc *, uint16_t, uint16_t);
struct ucom_methods uark_methods = {
uark_get_status,
uark_set,
uark_param,
NULL,
NULL,
NULL,
NULL,
NULL,
};
static const struct usb_devno uark_devs[] = {
{ USB_VENDOR_ARKMICRO, USB_PRODUCT_ARKMICRO_ARK3116 }
};
int uark_match(struct device *, void *, void *);
void uark_attach(struct device *, struct device *, void *);
int uark_detach(struct device *, int);
int uark_activate(struct device *, int);
struct cfdriver uark_cd = {
NULL, "uark", DV_DULL
};
const struct cfattach uark_ca = {
sizeof(struct uark_softc),
uark_match,
uark_attach,
uark_detach,
uark_activate,
};
int
uark_match(struct device *parent, void *match, void *aux)
{
struct usb_attach_arg *uaa = aux;
if (uaa->iface != NULL)
return UMATCH_NONE;
return (usb_lookup(uark_devs, uaa->vendor, uaa->product) != NULL) ?
UMATCH_VENDOR_PRODUCT : UMATCH_NONE;
}
void
uark_attach(struct device *parent, struct device *self, void *aux)
{
struct uark_softc *sc = (struct uark_softc *)self;
struct usb_attach_arg *uaa = aux;
struct ucom_attach_args uca;
usb_interface_descriptor_t *id;
usb_endpoint_descriptor_t *ed;
usbd_status error;
int i;
bzero(&uca, sizeof(uca));
sc->sc_udev = uaa->device;
if (usbd_set_config_index(sc->sc_udev, UARK_CONFIG_NO, 1) != 0) {
printf("%s: could not set configuration no\n",
sc->sc_dev.dv_xname);
sc->sc_dying = 1;
return;
}
/* get the first interface handle */
error = usbd_device2interface_handle(sc->sc_udev, UARK_IFACE_NO,
&sc->sc_iface);
if (error != 0) {
printf("%s: could not get interface handle\n",
sc->sc_dev.dv_xname);
sc->sc_dying = 1;
return;
}
id = usbd_get_interface_descriptor(sc->sc_iface);
uca.bulkin = uca.bulkout = -1;
for (i = 0; i < id->bNumEndpoints; i++) {
ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i);
if (ed == NULL) {
printf("%s: no endpoint descriptor found for %d\n",
sc->sc_dev.dv_xname, i);
sc->sc_dying = 1;
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 || uca.bulkout == -1) {
printf("%s: missing endpoint\n", sc->sc_dev.dv_xname);
sc->sc_dying = 1;
return;
}
uca.ibufsize = UARKBUFSZ;
uca.obufsize = UARKBUFSZ;
uca.ibufsizepad = UARKBUFSZ;
uca.opkthdrlen = 0;
uca.device = sc->sc_udev;
uca.iface = sc->sc_iface;
uca.methods = &uark_methods;
uca.arg = sc;
uca.info = NULL;
usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev,
&sc->sc_dev);
sc->sc_subdev = config_found_sm(self, &uca, ucomprint, ucomsubmatch);
}
int
uark_detach(struct device *self, int flags)
{
struct uark_softc *sc = (struct uark_softc *)self;
int rv = 0;
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,
&sc->sc_dev);
return (rv);
}
int
uark_activate(struct device *self, int act)
{
struct uark_softc *sc = (struct uark_softc *)self;
int rv = 0;
switch (act) {
case DVACT_ACTIVATE:
break;
case DVACT_DEACTIVATE:
if (sc->sc_subdev != NULL)
rv = config_deactivate(sc->sc_subdev);
sc->sc_dying = 1;
break;
}
return (rv);
}
void
uark_set(void *vsc, int portno, int reg, int onoff)
{
struct uark_softc *sc = vsc;
switch (reg) {
case UCOM_SET_BREAK:
uark_break(sc, portno, onoff);
return;
case UCOM_SET_DTR:
case UCOM_SET_RTS:
default:
return;
}
}
int
uark_param(void *vsc, int portno, struct termios *t)
{
struct uark_softc *sc = (struct uark_softc *)vsc;
int data;
switch (t->c_ospeed) {
case 300:
case 600:
case 1200:
case 1800:
case 2400:
case 4800:
case 9600:
case 19200:
case 38400:
case 57600:
case 115200:
uark_cmd(sc, 3, 0x83);
uark_cmd(sc, 0, (UARK_BAUD_REF / t->c_ospeed) & 0xFF);
uark_cmd(sc, 1, (UARK_BAUD_REF / t->c_ospeed) >> 8);
uark_cmd(sc, 3, 0x03);
break;
default:
return (EINVAL);
}
if (ISSET(t->c_cflag, CSTOPB))
data = UARK_STOP_BITS_2;
else
data = UARK_STOP_BITS_1;
if (ISSET(t->c_cflag, PARENB)) {
if (ISSET(t->c_cflag, PARODD))
data |= UARK_PARITY_ODD;
else
data |= UARK_PARITY_EVEN;
} else
data |= UARK_PARITY_NONE;
switch (ISSET(t->c_cflag, CSIZE)) {
case CS5:
data |= UARK_SET_DATA_BITS(5);
break;
case CS6:
data |= UARK_SET_DATA_BITS(6);
break;
case CS7:
data |= UARK_SET_DATA_BITS(7);
break;
case CS8:
data |= UARK_SET_DATA_BITS(8);
break;
}
uark_cmd(sc, 3, 0x00);
uark_cmd(sc, 3, data);
#if 0
/* XXX flow control */
if (ISSET(t->c_cflag, CRTSCTS))
/* rts/cts flow ctl */
} else if (ISSET(t->c_iflag, IXON|IXOFF)) {
/* xon/xoff flow ctl */
} else {
/* disable flow ctl */
}
#endif
return (0);
}
void
uark_get_status(void *vsc, int portno, u_char *lsr, u_char *msr)
{
struct uark_softc *sc = vsc;
if (msr != NULL)
*msr = sc->sc_msr;
if (lsr != NULL)
*lsr = sc->sc_lsr;
}
void
uark_break(void *vsc, int portno, int onoff)
{
#ifdef UARK_DEBUG
struct uark_softc *sc = vsc;
printf("%s: break %s!\n", sc->sc_dev.dv_xname,
onoff ? "on" : "off");
if (onoff)
/* break on */
uark_cmd(sc, 4, 0x01);
else
uark_cmd(sc, 4, 0x00);
#endif
}
int
uark_cmd(struct uark_softc *sc, uint16_t index, uint16_t value)
{
usb_device_request_t req;
usbd_status err;
req.bmRequestType = UARK_WRITE;
req.bRequest = UARK_REQUEST;
USETW(req.wValue, value);
USETW(req.wIndex, index);
USETW(req.wLength, 0);
err = usbd_do_request(sc->sc_udev, &req, NULL);
if (err)
return (EIO);
return (0);
}
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