8010f4ad21
This codepath used uint64_t's in place of pointers in structs and arrays to allow 32-bit code to use 64-bit version of ioctls. Now that we support 32-bit compat natively this is no longer needed. Reviewed by: hselasky, jrtc27 (prior version)
146 lines
3.7 KiB
C
146 lines
3.7 KiB
C
/* $NetBSD: data.c,v 1.8 2000/04/02 11:10:53 augustss Exp $ */
|
|
|
|
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause-NetBSD
|
|
*
|
|
* Copyright (c) 1999 Lennart Augustsson <augustss@netbsd.org>
|
|
* All rights reserved.
|
|
*
|
|
* 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 AUTHOR 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 AUTHOR 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("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <assert.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <dev/usb/usb_ioctl.h>
|
|
#include "usbhid.h"
|
|
#include "usbvar.h"
|
|
|
|
int32_t
|
|
hid_get_data(const void *p, const hid_item_t *h)
|
|
{
|
|
const uint8_t *buf;
|
|
uint32_t hpos;
|
|
uint32_t hsize;
|
|
uint32_t data;
|
|
int i, end, offs;
|
|
|
|
buf = p;
|
|
|
|
/* Skip report ID byte. */
|
|
if (h->report_ID > 0)
|
|
buf++;
|
|
|
|
hpos = h->pos; /* bit position of data */
|
|
hsize = h->report_size; /* bit length of data */
|
|
|
|
/* Range check and limit */
|
|
if (hsize == 0)
|
|
return (0);
|
|
if (hsize > 32)
|
|
hsize = 32;
|
|
|
|
offs = hpos / 8;
|
|
end = (hpos + hsize) / 8 - offs;
|
|
data = 0;
|
|
for (i = 0; i <= end; i++)
|
|
data |= buf[offs + i] << (i*8);
|
|
|
|
/* Correctly shift down data */
|
|
data >>= hpos % 8;
|
|
hsize = 32 - hsize;
|
|
|
|
/* Mask and sign extend in one */
|
|
if ((h->logical_minimum < 0) || (h->logical_maximum < 0))
|
|
data = (int32_t)((int32_t)data << hsize) >> hsize;
|
|
else
|
|
data = (uint32_t)((uint32_t)data << hsize) >> hsize;
|
|
|
|
return (data);
|
|
}
|
|
|
|
void
|
|
hid_set_data(void *p, const hid_item_t *h, int32_t data)
|
|
{
|
|
uint8_t *buf;
|
|
uint32_t hpos;
|
|
uint32_t hsize;
|
|
uint32_t mask;
|
|
int i;
|
|
int end;
|
|
int offs;
|
|
|
|
buf = p;
|
|
|
|
/* Set report ID byte. */
|
|
if (h->report_ID > 0)
|
|
*buf++ = h->report_ID & 0xff;
|
|
|
|
hpos = h->pos; /* bit position of data */
|
|
hsize = h->report_size; /* bit length of data */
|
|
|
|
if (hsize != 32) {
|
|
mask = (1 << hsize) - 1;
|
|
data &= mask;
|
|
} else
|
|
mask = ~0;
|
|
|
|
data <<= (hpos % 8);
|
|
mask <<= (hpos % 8);
|
|
mask = ~mask;
|
|
|
|
offs = hpos / 8;
|
|
end = (hpos + hsize) / 8 - offs;
|
|
|
|
for (i = 0; i <= end; i++)
|
|
buf[offs + i] = (buf[offs + i] & (mask >> (i*8))) |
|
|
((data >> (i*8)) & 0xff);
|
|
}
|
|
|
|
int
|
|
hid_get_report(int fd, enum hid_kind k, unsigned char *data, unsigned int size)
|
|
{
|
|
struct usb_gen_descriptor ugd;
|
|
|
|
memset(&ugd, 0, sizeof(ugd));
|
|
ugd.ugd_data = data;
|
|
ugd.ugd_maxlen = size;
|
|
ugd.ugd_report_type = k + 1;
|
|
return (ioctl(fd, USB_GET_REPORT, &ugd));
|
|
}
|
|
|
|
int
|
|
hid_set_report(int fd, enum hid_kind k, unsigned char *data, unsigned int size)
|
|
{
|
|
struct usb_gen_descriptor ugd;
|
|
|
|
memset(&ugd, 0, sizeof(ugd));
|
|
ugd.ugd_data = data;
|
|
ugd.ugd_maxlen = size;
|
|
ugd.ugd_report_type = k + 1;
|
|
return (ioctl(fd, USB_SET_REPORT, &ugd));
|
|
}
|