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/* $OpenBSD: uscom.c,v 1.4 2016/01/07 12:53:37 mpi 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/ucomvar.h>
#define USCOMBUFSZ 256
#define USCOM_CONFIG_INDEX 0
#define USCOM_IFACE_NO 0
struct uscom_softc {
struct device sc_dev;
struct usbd_device *sc_udev;
struct usbd_interface *sc_iface;
struct device *sc_subdev;
};
struct ucom_methods uscom_methods = {
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
};
static const struct usb_devno uscom_devs[] = {
{ USB_VENDOR_HP, USB_PRODUCT_HP_HPX9GP }
};
int uscom_match(struct device *, void *, void *);
void uscom_attach(struct device *, struct device *, void *);
int uscom_detach(struct device *, int);
struct cfdriver uscom_cd = {
NULL, "uscom", DV_DULL
};
const struct cfattach uscom_ca = {
sizeof(struct uscom_softc), uscom_match, uscom_attach, uscom_detach
};
int
uscom_match(struct device *parent, void *match, void *aux)
{
struct usb_attach_arg *uaa = aux;
if (uaa->iface != NULL)
return UMATCH_NONE;
return (usb_lookup(uscom_devs, uaa->vendor, uaa->product) != NULL) ?
UMATCH_VENDOR_PRODUCT : UMATCH_NONE;
}
void
uscom_attach(struct device *parent, struct device *self, void *aux)
{
struct uscom_softc *sc = (struct uscom_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, USCOM_CONFIG_INDEX, 1) != 0) {
printf("%s: could not set configuration no\n",
sc->sc_dev.dv_xname);
usbd_deactivate(sc->sc_udev);
return;
}
/* get the first interface handle */
error = usbd_device2interface_handle(sc->sc_udev, USCOM_IFACE_NO,
&sc->sc_iface);
if (error != 0) {
printf("%s: could not get interface handle\n",
sc->sc_dev.dv_xname);
usbd_deactivate(sc->sc_udev);
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);
usbd_deactivate(sc->sc_udev);
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);
usbd_deactivate(sc->sc_udev);
return;
}
uca.ibufsize = USCOMBUFSZ;
uca.obufsize = USCOMBUFSZ;
uca.ibufsizepad = USCOMBUFSZ;
uca.opkthdrlen = 0;
uca.device = sc->sc_udev;
uca.iface = sc->sc_iface;
uca.methods = &uscom_methods;
uca.arg = sc;
uca.info = NULL;
sc->sc_subdev = config_found_sm(self, &uca, ucomprint, ucomsubmatch);
}
int
uscom_detach(struct device *self, int flags)
{
struct uscom_softc *sc = (struct uscom_softc *)self;
int rv = 0;
if (sc->sc_subdev != NULL) {
rv = config_detach(sc->sc_subdev, flags);
sc->sc_subdev = NULL;
}
return (rv);
}
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