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/* $NetBSD: uhid.c,v 1.46 2001/11/13 06:24:55 lukem Exp $ */
/* Also already merged from NetBSD:
* $NetBSD: uhid.c,v 1.54 2002/09/23 05:51:21 simonb Exp $
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/dev/usb/input/uhid.c 235868 2012-05-24 01:28:58Z mav $");
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Lennart Augustsson (lennart@augustsson.net) at
* Carlstedt Research & Technology.
*
* 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.
*/
/*
* HID spec: http://www.usb.org/developers/devclass_docs/HID1_11.pdf
*/
#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 <sys/conf.h>
#include <sys/fcntl.h>
#include "usbdevs.h"
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdi_util.h>
#include <dev/usb/usbhid.h>
#include <dev/usb/usb_ioctl.h>
#define USB_DEBUG_VAR uhid_debug
#include <dev/usb/usb_debug.h>
#include <dev/usb/input/usb_rdesc.h>
#include <dev/usb/quirk/usb_quirk.h>
#ifdef USB_DEBUG
static int uhid_debug = 0;
SYSCTL_NODE(_hw_usb, OID_AUTO, uhid, CTLFLAG_RW, 0, "USB uhid");
SYSCTL_INT(_hw_usb_uhid, OID_AUTO, debug, CTLFLAG_RW,
&uhid_debug, 0, "Debug level");
#endif
#define UHID_BSIZE 1024 /* bytes, buffer size */
#define UHID_FRAME_NUM 50 /* bytes, frame number */
enum {
UHID_INTR_DT_WR,
UHID_INTR_DT_RD,
UHID_CTRL_DT_WR,
UHID_CTRL_DT_RD,
UHID_N_TRANSFER,
};
struct uhid_softc {
struct usb_fifo_sc sc_fifo;
struct mtx sc_mtx;
struct usb_xfer *sc_xfer[UHID_N_TRANSFER];
struct usb_device *sc_udev;
void *sc_repdesc_ptr;
uint32_t sc_isize;
uint32_t sc_osize;
uint32_t sc_fsize;
uint16_t sc_repdesc_size;
uint8_t sc_iface_no;
uint8_t sc_iface_index;
uint8_t sc_iid;
uint8_t sc_oid;
uint8_t sc_fid;
uint8_t sc_flags;
#define UHID_FLAG_IMMED 0x01 /* set if read should be immediate */
#define UHID_FLAG_STATIC_DESC 0x04 /* set if report descriptors are
* static */
};
static const uint8_t uhid_xb360gp_report_descr[] = {UHID_XB360GP_REPORT_DESCR()};
static const uint8_t uhid_graphire_report_descr[] = {UHID_GRAPHIRE_REPORT_DESCR()};
static const uint8_t uhid_graphire3_4x5_report_descr[] = {UHID_GRAPHIRE3_4X5_REPORT_DESCR()};
/* prototypes */
static device_probe_t uhid_probe;
static device_attach_t uhid_attach;
static device_detach_t uhid_detach;
static usb_callback_t uhid_intr_write_callback;
static usb_callback_t uhid_intr_read_callback;
static usb_callback_t uhid_write_callback;
static usb_callback_t uhid_read_callback;
static usb_fifo_cmd_t uhid_start_read;
static usb_fifo_cmd_t uhid_stop_read;
static usb_fifo_cmd_t uhid_start_write;
static usb_fifo_cmd_t uhid_stop_write;
static usb_fifo_open_t uhid_open;
static usb_fifo_close_t uhid_close;
static usb_fifo_ioctl_t uhid_ioctl;
static struct usb_fifo_methods uhid_fifo_methods = {
.f_open = &uhid_open,
.f_close = &uhid_close,
.f_ioctl = &uhid_ioctl,
.f_start_read = &uhid_start_read,
.f_stop_read = &uhid_stop_read,
.f_start_write = &uhid_start_write,
.f_stop_write = &uhid_stop_write,
.basename[0] = "uhid",
};
static void
uhid_intr_write_callback(struct usb_xfer *xfer, usb_error_t error)
{
struct uhid_softc *sc = usbd_xfer_softc(xfer);
struct usb_page_cache *pc;
int actlen;
switch (USB_GET_STATE(xfer)) {
case USB_ST_TRANSFERRED:
case USB_ST_SETUP:
tr_setup:
pc = usbd_xfer_get_frame(xfer, 0);
if (usb_fifo_get_data(sc->sc_fifo.fp[USB_FIFO_TX], pc,
0, usbd_xfer_max_len(xfer), &actlen, 0)) {
usbd_xfer_set_frame_len(xfer, 0, actlen);
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
uhid_intr_read_callback(struct usb_xfer *xfer, usb_error_t error)
{
struct uhid_softc *sc = usbd_xfer_softc(xfer);
struct usb_page_cache *pc;
int actlen;
usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
switch (USB_GET_STATE(xfer)) {
case USB_ST_TRANSFERRED:
DPRINTF("transferred!\n");
pc = usbd_xfer_get_frame(xfer, 0);
/*
* If the ID byte is non zero we allow descriptors
* having multiple sizes:
*/
if ((actlen >= (int)sc->sc_isize) ||
((actlen > 0) && (sc->sc_iid != 0))) {
/* limit report length to the maximum */
if (actlen > (int)sc->sc_isize)
actlen = sc->sc_isize;
usb_fifo_put_data(sc->sc_fifo.fp[USB_FIFO_RX], pc,
0, actlen, 1);
} else {
/* ignore it */
DPRINTF("ignored transfer, %d bytes\n", actlen);
}
case USB_ST_SETUP:
re_submit:
if (usb_fifo_put_bytes_max(
sc->sc_fifo.fp[USB_FIFO_RX]) != 0) {
usbd_xfer_set_frame_len(xfer, 0, sc->sc_isize);
usbd_transfer_submit(xfer);
}
return;
default: /* Error */
if (error != USB_ERR_CANCELLED) {
/* try to clear stall first */
usbd_xfer_set_stall(xfer);
goto re_submit;
}
return;
}
}
static void
uhid_fill_set_report(struct usb_device_request *req, uint8_t iface_no,
uint8_t type, uint8_t id, uint16_t size)
{
req->bmRequestType = UT_WRITE_CLASS_INTERFACE;
req->bRequest = UR_SET_REPORT;
USETW2(req->wValue, type, id);
req->wIndex[0] = iface_no;
req->wIndex[1] = 0;
USETW(req->wLength, size);
}
static void
uhid_fill_get_report(struct usb_device_request *req, uint8_t iface_no,
uint8_t type, uint8_t id, uint16_t size)
{
req->bmRequestType = UT_READ_CLASS_INTERFACE;
req->bRequest = UR_GET_REPORT;
USETW2(req->wValue, type, id);
req->wIndex[0] = iface_no;
req->wIndex[1] = 0;
USETW(req->wLength, size);
}
static void
uhid_write_callback(struct usb_xfer *xfer, usb_error_t error)
{
struct uhid_softc *sc = usbd_xfer_softc(xfer);
struct usb_device_request req;
struct usb_page_cache *pc;
uint32_t size = sc->sc_osize;
uint32_t actlen;
uint8_t id;
switch (USB_GET_STATE(xfer)) {
case USB_ST_TRANSFERRED:
case USB_ST_SETUP:
/* try to extract the ID byte */
if (sc->sc_oid) {
pc = usbd_xfer_get_frame(xfer, 0);
if (usb_fifo_get_data(sc->sc_fifo.fp[USB_FIFO_TX], pc,
0, 1, &actlen, 0)) {
if (actlen != 1) {
goto tr_error;
}
usbd_copy_out(pc, 0, &id, 1);
} else {
return;
}
if (size) {
size--;
}
} else {
id = 0;
}
pc = usbd_xfer_get_frame(xfer, 1);
if (usb_fifo_get_data(sc->sc_fifo.fp[USB_FIFO_TX], pc,
0, UHID_BSIZE, &actlen, 1)) {
if (actlen != size) {
goto tr_error;
}
uhid_fill_set_report
(&req, sc->sc_iface_no,
UHID_OUTPUT_REPORT, id, size);
pc = usbd_xfer_get_frame(xfer, 0);
usbd_copy_in(pc, 0, &req, sizeof(req));
usbd_xfer_set_frame_len(xfer, 0, sizeof(req));
usbd_xfer_set_frame_len(xfer, 1, size);
usbd_xfer_set_frames(xfer, size ? 2 : 1);
usbd_transfer_submit(xfer);
}
return;
default:
tr_error:
/* bomb out */
usb_fifo_get_data_error(sc->sc_fifo.fp[USB_FIFO_TX]);
return;
}
}
static void
uhid_read_callback(struct usb_xfer *xfer, usb_error_t error)
{
struct uhid_softc *sc = usbd_xfer_softc(xfer);
struct usb_device_request req;
struct usb_page_cache *pc;
pc = usbd_xfer_get_frame(xfer, 0);
switch (USB_GET_STATE(xfer)) {
case USB_ST_TRANSFERRED:
usb_fifo_put_data(sc->sc_fifo.fp[USB_FIFO_RX], pc, sizeof(req),
sc->sc_isize, 1);
return;
case USB_ST_SETUP:
if (usb_fifo_put_bytes_max(sc->sc_fifo.fp[USB_FIFO_RX]) > 0) {
uhid_fill_get_report
(&req, sc->sc_iface_no, UHID_INPUT_REPORT,
sc->sc_iid, sc->sc_isize);
usbd_copy_in(pc, 0, &req, sizeof(req));
usbd_xfer_set_frame_len(xfer, 0, sizeof(req));
usbd_xfer_set_frame_len(xfer, 1, sc->sc_isize);
usbd_xfer_set_frames(xfer, sc->sc_isize ? 2 : 1);
usbd_transfer_submit(xfer);
}
return;
default: /* Error */
/* bomb out */
usb_fifo_put_data_error(sc->sc_fifo.fp[USB_FIFO_RX]);
return;
}
}
static const struct usb_config uhid_config[UHID_N_TRANSFER] = {
[UHID_INTR_DT_WR] = {
.type = UE_INTERRUPT,
.endpoint = UE_ADDR_ANY,
.direction = UE_DIR_OUT,
.flags = {.pipe_bof = 1,.no_pipe_ok = 1, },
.bufsize = UHID_BSIZE,
.callback = &uhid_intr_write_callback,
},
[UHID_INTR_DT_RD] = {
.type = UE_INTERRUPT,
.endpoint = UE_ADDR_ANY,
.direction = UE_DIR_IN,
.flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
.bufsize = UHID_BSIZE,
.callback = &uhid_intr_read_callback,
},
[UHID_CTRL_DT_WR] = {
.type = UE_CONTROL,
.endpoint = 0x00, /* Control pipe */
.direction = UE_DIR_ANY,
.bufsize = sizeof(struct usb_device_request) + UHID_BSIZE,
.callback = &uhid_write_callback,
.timeout = 1000, /* 1 second */
},
[UHID_CTRL_DT_RD] = {
.type = UE_CONTROL,
.endpoint = 0x00, /* Control pipe */
.direction = UE_DIR_ANY,
.bufsize = sizeof(struct usb_device_request) + UHID_BSIZE,
.callback = &uhid_read_callback,
.timeout = 1000, /* 1 second */
},
};
static void
uhid_start_read(struct usb_fifo *fifo)
{
struct uhid_softc *sc = usb_fifo_softc(fifo);
if (sc->sc_flags & UHID_FLAG_IMMED) {
usbd_transfer_start(sc->sc_xfer[UHID_CTRL_DT_RD]);
} else {
usbd_transfer_start(sc->sc_xfer[UHID_INTR_DT_RD]);
}
}
static void
uhid_stop_read(struct usb_fifo *fifo)
{
struct uhid_softc *sc = usb_fifo_softc(fifo);
usbd_transfer_stop(sc->sc_xfer[UHID_CTRL_DT_RD]);
usbd_transfer_stop(sc->sc_xfer[UHID_INTR_DT_RD]);
}
static void
uhid_start_write(struct usb_fifo *fifo)
{
struct uhid_softc *sc = usb_fifo_softc(fifo);
if ((sc->sc_flags & UHID_FLAG_IMMED) ||
sc->sc_xfer[UHID_INTR_DT_WR] == NULL) {
usbd_transfer_start(sc->sc_xfer[UHID_CTRL_DT_WR]);
} else {
usbd_transfer_start(sc->sc_xfer[UHID_INTR_DT_WR]);
}
}
static void
uhid_stop_write(struct usb_fifo *fifo)
{
struct uhid_softc *sc = usb_fifo_softc(fifo);
usbd_transfer_stop(sc->sc_xfer[UHID_CTRL_DT_WR]);
usbd_transfer_stop(sc->sc_xfer[UHID_INTR_DT_WR]);
}
static int
uhid_get_report(struct uhid_softc *sc, uint8_t type,
uint8_t id, void *kern_data, void *user_data,
uint16_t len)
{
int err;
uint8_t free_data = 0;
if (kern_data == NULL) {
kern_data = malloc(len, M_USBDEV, M_WAITOK);
if (kern_data == NULL) {
err = ENOMEM;
goto done;
}
free_data = 1;
}
err = usbd_req_get_report(sc->sc_udev, NULL, kern_data,
len, sc->sc_iface_index, type, id);
if (err) {
err = ENXIO;
goto done;
}
if (user_data) {
/* dummy buffer */
err = copyout(kern_data, user_data, len);
if (err) {
goto done;
}
}
done:
if (free_data) {
free(kern_data, M_USBDEV);
}
return (err);
}
static int
uhid_set_report(struct uhid_softc *sc, uint8_t type,
uint8_t id, void *kern_data, void *user_data,
uint16_t len)
{
int err;
uint8_t free_data = 0;
if (kern_data == NULL) {
kern_data = malloc(len, M_USBDEV, M_WAITOK);
if (kern_data == NULL) {
err = ENOMEM;
goto done;
}
free_data = 1;
err = copyin(user_data, kern_data, len);
if (err) {
goto done;
}
}
err = usbd_req_set_report(sc->sc_udev, NULL, kern_data,
len, sc->sc_iface_index, type, id);
if (err) {
err = ENXIO;
goto done;
}
done:
if (free_data) {
free(kern_data, M_USBDEV);
}
return (err);
}
static int
uhid_open(struct usb_fifo *fifo, int fflags)
{
struct uhid_softc *sc = usb_fifo_softc(fifo);
/*
* The buffers are one byte larger than maximum so that one
* can detect too large read/writes and short transfers:
*/
if (fflags & FREAD) {
/* reset flags */
sc->sc_flags &= ~UHID_FLAG_IMMED;
if (usb_fifo_alloc_buffer(fifo,
sc->sc_isize + 1, UHID_FRAME_NUM)) {
return (ENOMEM);
}
}
if (fflags & FWRITE) {
if (usb_fifo_alloc_buffer(fifo,
sc->sc_osize + 1, UHID_FRAME_NUM)) {
return (ENOMEM);
}
}
return (0);
}
static void
uhid_close(struct usb_fifo *fifo, int fflags)
{
if (fflags & (FREAD | FWRITE)) {
usb_fifo_free_buffer(fifo);
}
}
static int
uhid_ioctl(struct usb_fifo *fifo, u_long cmd, void *addr,
int fflags)
{
struct uhid_softc *sc = usb_fifo_softc(fifo);
struct usb_gen_descriptor *ugd;
uint32_t size;
int error = 0;
uint8_t id;
switch (cmd) {
case USB_GET_REPORT_DESC:
ugd = addr;
if (sc->sc_repdesc_size > ugd->ugd_maxlen) {
size = ugd->ugd_maxlen;
} else {
size = sc->sc_repdesc_size;
}
ugd->ugd_actlen = size;
if (ugd->ugd_data == NULL)
break; /* descriptor length only */
error = copyout(sc->sc_repdesc_ptr, ugd->ugd_data, size);
break;
case USB_SET_IMMED:
if (!(fflags & FREAD)) {
error = EPERM;
break;
}
if (*(int *)addr) {
/* do a test read */
error = uhid_get_report(sc, UHID_INPUT_REPORT,
sc->sc_iid, NULL, NULL, sc->sc_isize);
if (error) {
break;
}
mtx_lock(&sc->sc_mtx);
sc->sc_flags |= UHID_FLAG_IMMED;
mtx_unlock(&sc->sc_mtx);
} else {
mtx_lock(&sc->sc_mtx);
sc->sc_flags &= ~UHID_FLAG_IMMED;
mtx_unlock(&sc->sc_mtx);
}
break;
case USB_GET_REPORT:
if (!(fflags & FREAD)) {
error = EPERM;
break;
}
ugd = addr;
switch (ugd->ugd_report_type) {
case UHID_INPUT_REPORT:
size = sc->sc_isize;
id = sc->sc_iid;
break;
case UHID_OUTPUT_REPORT:
size = sc->sc_osize;
id = sc->sc_oid;
break;
case UHID_FEATURE_REPORT:
size = sc->sc_fsize;
id = sc->sc_fid;
break;
default:
return (EINVAL);
}
if (id != 0)
copyin(ugd->ugd_data, &id, 1);
error = uhid_get_report(sc, ugd->ugd_report_type, id,
NULL, ugd->ugd_data, imin(ugd->ugd_maxlen, size));
break;
case USB_SET_REPORT:
if (!(fflags & FWRITE)) {
error = EPERM;
break;
}
ugd = addr;
switch (ugd->ugd_report_type) {
case UHID_INPUT_REPORT:
size = sc->sc_isize;
id = sc->sc_iid;
break;
case UHID_OUTPUT_REPORT:
size = sc->sc_osize;
id = sc->sc_oid;
break;
case UHID_FEATURE_REPORT:
size = sc->sc_fsize;
id = sc->sc_fid;
break;
default:
return (EINVAL);
}
if (id != 0)
copyin(ugd->ugd_data, &id, 1);
error = uhid_set_report(sc, ugd->ugd_report_type, id,
NULL, ugd->ugd_data, imin(ugd->ugd_maxlen, size));
break;
case USB_GET_REPORT_ID:
*(int *)addr = 0; /* XXX: we only support reportid 0? */
break;
default:
error = EINVAL;
break;
}
return (error);
}
static const STRUCT_USB_HOST_ID uhid_devs[] = {
/* generic HID class */
{USB_IFACE_CLASS(UICLASS_HID),},
/* the Xbox 360 gamepad doesn't use the HID class */
{USB_IFACE_CLASS(UICLASS_VENDOR),
USB_IFACE_SUBCLASS(UISUBCLASS_XBOX360_CONTROLLER),
USB_IFACE_PROTOCOL(UIPROTO_XBOX360_GAMEPAD),},
};
static int
uhid_probe(device_t dev)
{
struct usb_attach_arg *uaa = device_get_ivars(dev);
int error;
DPRINTFN(11, "\n");
if (uaa->usb_mode != USB_MODE_HOST)
return (ENXIO);
error = usbd_lookup_id_by_uaa(uhid_devs, sizeof(uhid_devs), uaa);
if (error)
return (error);
if (usb_test_quirk(uaa, UQ_HID_IGNORE))
return (ENXIO);
/*
* Don't attach to mouse and keyboard devices, hence then no
* "nomatch" event is generated and then ums and ukbd won't
* attach properly when loaded.
*/
if ((uaa->info.bInterfaceClass == UICLASS_HID) &&
(uaa->info.bInterfaceSubClass == UISUBCLASS_BOOT) &&
((uaa->info.bInterfaceProtocol == UIPROTO_BOOT_KEYBOARD) ||
(uaa->info.bInterfaceProtocol == UIPROTO_MOUSE))) {
return (ENXIO);
}
return (BUS_PROBE_GENERIC);
}
static int
uhid_attach(device_t dev)
{
struct usb_attach_arg *uaa = device_get_ivars(dev);
struct uhid_softc *sc = device_get_softc(dev);
int unit = device_get_unit(dev);
int error = 0;
DPRINTFN(10, "sc=%p\n", sc);
device_set_usb_desc(dev);
mtx_init(&sc->sc_mtx, "uhid lock", NULL, MTX_DEF | MTX_RECURSE);
sc->sc_udev = uaa->device;
sc->sc_iface_no = uaa->info.bIfaceNum;
sc->sc_iface_index = uaa->info.bIfaceIndex;
error = usbd_transfer_setup(uaa->device,
&uaa->info.bIfaceIndex, sc->sc_xfer, uhid_config,
UHID_N_TRANSFER, sc, &sc->sc_mtx);
if (error) {
DPRINTF("error=%s\n", usbd_errstr(error));
goto detach;
}
if (uaa->info.idVendor == USB_VENDOR_WACOM) {
/* the report descriptor for the Wacom Graphire is broken */
if (uaa->info.idProduct == USB_PRODUCT_WACOM_GRAPHIRE) {
sc->sc_repdesc_size = sizeof(uhid_graphire_report_descr);
sc->sc_repdesc_ptr = (void *)&uhid_graphire_report_descr;
sc->sc_flags |= UHID_FLAG_STATIC_DESC;
} else if (uaa->info.idProduct == USB_PRODUCT_WACOM_GRAPHIRE3_4X5) {
static uint8_t reportbuf[] = {2, 2, 2};
/*
* The Graphire3 needs 0x0202 to be written to
* feature report ID 2 before it'll start
* returning digitizer data.
*/
error = usbd_req_set_report(uaa->device, NULL,
reportbuf, sizeof(reportbuf),
uaa->info.bIfaceIndex, UHID_FEATURE_REPORT, 2);
if (error) {
DPRINTF("set report failed, error=%s (ignored)\n",
usbd_errstr(error));
}
sc->sc_repdesc_size = sizeof(uhid_graphire3_4x5_report_descr);
sc->sc_repdesc_ptr = (void *)&uhid_graphire3_4x5_report_descr;
sc->sc_flags |= UHID_FLAG_STATIC_DESC;
}
} else if ((uaa->info.bInterfaceClass == UICLASS_VENDOR) &&
(uaa->info.bInterfaceSubClass == UISUBCLASS_XBOX360_CONTROLLER) &&
(uaa->info.bInterfaceProtocol == UIPROTO_XBOX360_GAMEPAD)) {
/* the Xbox 360 gamepad has no report descriptor */
sc->sc_repdesc_size = sizeof(uhid_xb360gp_report_descr);
sc->sc_repdesc_ptr = (void *)&uhid_xb360gp_report_descr;
sc->sc_flags |= UHID_FLAG_STATIC_DESC;
}
if (sc->sc_repdesc_ptr == NULL) {
error = usbd_req_get_hid_desc(uaa->device, NULL,
&sc->sc_repdesc_ptr, &sc->sc_repdesc_size,
M_USBDEV, uaa->info.bIfaceIndex);
if (error) {
device_printf(dev, "no report descriptor\n");
goto detach;
}
}
error = usbd_req_set_idle(uaa->device, NULL,
uaa->info.bIfaceIndex, 0, 0);
if (error) {
DPRINTF("set idle failed, error=%s (ignored)\n",
usbd_errstr(error));
}
sc->sc_isize = hid_report_size
(sc->sc_repdesc_ptr, sc->sc_repdesc_size, hid_input, &sc->sc_iid);
sc->sc_osize = hid_report_size
(sc->sc_repdesc_ptr, sc->sc_repdesc_size, hid_output, &sc->sc_oid);
sc->sc_fsize = hid_report_size
(sc->sc_repdesc_ptr, sc->sc_repdesc_size, hid_feature, &sc->sc_fid);
if (sc->sc_isize > UHID_BSIZE) {
DPRINTF("input size is too large, "
"%d bytes (truncating)\n",
sc->sc_isize);
sc->sc_isize = UHID_BSIZE;
}
if (sc->sc_osize > UHID_BSIZE) {
DPRINTF("output size is too large, "
"%d bytes (truncating)\n",
sc->sc_osize);
sc->sc_osize = UHID_BSIZE;
}
if (sc->sc_fsize > UHID_BSIZE) {
DPRINTF("feature size is too large, "
"%d bytes (truncating)\n",
sc->sc_fsize);
sc->sc_fsize = UHID_BSIZE;
}
error = usb_fifo_attach(uaa->device, sc, &sc->sc_mtx,
&uhid_fifo_methods, &sc->sc_fifo,
unit, -1, uaa->info.bIfaceIndex,
UID_ROOT, GID_OPERATOR, 0644);
if (error) {
goto detach;
}
return (0); /* success */
detach:
uhid_detach(dev);
return (ENOMEM);
}
static int
uhid_detach(device_t dev)
{
struct uhid_softc *sc = device_get_softc(dev);
usb_fifo_detach(&sc->sc_fifo);
usbd_transfer_unsetup(sc->sc_xfer, UHID_N_TRANSFER);
if (sc->sc_repdesc_ptr) {
if (!(sc->sc_flags & UHID_FLAG_STATIC_DESC)) {
free(sc->sc_repdesc_ptr, M_USBDEV);
}
}
mtx_destroy(&sc->sc_mtx);
return (0);
}
static devclass_t uhid_devclass;
static device_method_t uhid_methods[] = {
DEVMETHOD(device_probe, uhid_probe),
DEVMETHOD(device_attach, uhid_attach),
DEVMETHOD(device_detach, uhid_detach),
{0, 0}
};
static driver_t uhid_driver = {
.name = "uhid",
.methods = uhid_methods,
.size = sizeof(struct uhid_softc),
};
DRIVER_MODULE(uhid, uhub, uhid_driver, uhid_devclass, NULL, 0);
MODULE_DEPEND(uhid, usb, 1, 1, 1);
MODULE_VERSION(uhid, 1);