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iwmbtfw: Firmware loader for Intel Wireless 8260 based Bluetooth USB devices

Browse source 
Currently supported models are: 8260, 8265, 9560, 9260 and 22161.
Firmware files can be installed with comms/iwmbt-firmware port.

PR:			237083
Reviewed by:		hps, emax
X-MFC with:		r351196
Differential Revision:	https://reviews.freebsd.org/D21071
This commit is contained in:
Vladimir Kondratyev 2019-08-18 22:20:28 +00:00
parent 3544d43bb1
commit 7f32f0e227
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=351197
12 changed files with 1334 additions and 0 deletions
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1
targets/pseudo/userland/Makefile.depend
View file

@ -443,6 +443,7 @@ DIRDEPS+= \
usr.sbin/bluetooth/hccontrol \
usr.sbin/bluetooth/hcsecd \
usr.sbin/bluetooth/hcseriald \
usr.sbin/bluetooth/iwmbtfw \
usr.sbin/bluetooth/l2control \
usr.sbin/bluetooth/l2ping \
usr.sbin/bluetooth/rfcomm_pppd \

3
tools/build/mk/OptionalObsoleteFiles.inc
View file

@ -471,6 +471,7 @@ OLD_FILES+=etc/bluetooth/hcsecd.conf
OLD_FILES+=etc/bluetooth/hosts
OLD_FILES+=etc/bluetooth/protocols
OLD_FILES+=etc/defaults/bluetooth.device.conf
OLD_FILES+=etc/devd/iwmbtfw.conf
OLD_DIRS+=etc/bluetooth
OLD_FILES+=etc/rc.d/bluetooth
OLD_FILES+=etc/rc.d/bthidd
@ -524,6 +525,7 @@ OLD_FILES+=usr/sbin/btpand
OLD_FILES+=usr/sbin/hccontrol
OLD_FILES+=usr/sbin/hcsecd
OLD_FILES+=usr/sbin/hcseriald
OLD_FILES+=usr/sbin/iwmbtfw
OLD_FILES+=usr/sbin/l2control
OLD_FILES+=usr/sbin/l2ping
OLD_FILES+=usr/sbin/rfcomm_pppd
@ -601,6 +603,7 @@ OLD_FILES+=usr/share/man/man8/btpand.8.gz
OLD_FILES+=usr/share/man/man8/hccontrol.8.gz
OLD_FILES+=usr/share/man/man8/hcsecd.8.gz
OLD_FILES+=usr/share/man/man8/hcseriald.8.gz
OLD_FILES+=usr/share/man/man8/iwmbtfw.8.gz
OLD_FILES+=usr/share/man/man8/l2control.8.gz
OLD_FILES+=usr/share/man/man8/l2ping.8.gz
OLD_FILES+=usr/share/man/man8/rfcomm_pppd.8.gz

1
usr.sbin/bluetooth/Makefile
View file

@ -21,6 +21,7 @@ SUBDIR+= ath3kfw
SUBDIR+= bcmfw
SUBDIR+= bthidcontrol
SUBDIR+= bthidd
SUBDIR+= iwmbtfw
.endif
.include <bsd.subdir.mk>

11
usr.sbin/bluetooth/iwmbtfw/Makefile Normal file
View file

@ -0,0 +1,11 @@
# $FreeBSD$
PACKAGE= bluetooth
CONFS= iwmbtfw.conf
CONFSDIR= /etc/devd
PROG= iwmbtfw
MAN= iwmbtfw.8
LIBADD+= usb
SRCS= main.c iwmbt_fw.c iwmbt_hw.c
.include <bsd.prog.mk>

47
usr.sbin/bluetooth/iwmbtfw/iwmbt_dbg.h Normal file
View file

@ -0,0 +1,47 @@
/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2013 Adrian Chadd <adrian@freebsd.org>
* Copyright (c) 2019 Vladimir Kondratyev <wulf@FreeBSD.org>
*
* 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.
*
* $FreeBSD$
*/
#ifndef __IWMBT_DEBUG_H__
#define __IWMBT_DEBUG_H__
extern int iwmbt_do_debug;
extern int iwmbt_do_info;
#define iwmbt_err(fmt, ...) \
fprintf(stderr, "iwmbtfw: %s: "fmt"\n", __func__, ##__VA_ARGS__)
#define iwmbt_info(fmt, ...) do { \
if (iwmbt_do_info) \
fprintf(stderr, "%s: "fmt"\n", __func__, ##__VA_ARGS__);\
} while (0)
#define iwmbt_debug(fmt, ...) do { \
if (iwmbt_do_debug) \
fprintf(stderr, "%s: "fmt"\n", __func__, ##__VA_ARGS__);\
} while (0)
#endif

148
usr.sbin/bluetooth/iwmbtfw/iwmbt_fw.c Normal file
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@ -0,0 +1,148 @@
/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2013 Adrian Chadd <adrian@freebsd.org>
* Copyright (c) 2019 Vladimir Kondratyev <wulf@FreeBSD.org>
*
* 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.
*
* $FreeBSD$
*/
#include <sys/types.h>
#include <sys/endian.h>
#include <sys/stat.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "iwmbt_fw.h"
#include "iwmbt_dbg.h"
int
iwmbt_fw_read(struct iwmbt_firmware *fw, const char *fwname)
{
int fd;
struct stat sb;
unsigned char *buf;
ssize_t r;
int i;
fd = open(fwname, O_RDONLY);
if (fd < 0) {
warn("%s: open: %s", __func__, fwname);
return (0);
}
if (fstat(fd, &sb) != 0) {
warn("%s: stat: %s", __func__, fwname);
close(fd);
return (0);
}
buf = calloc(1, sb.st_size);
if (buf == NULL) {
warn("%s: calloc", __func__);
close(fd);
return (0);
}
i = 0;
/* XXX handle partial reads */
r = read(fd, buf, sb.st_size);
if (r < 0) {
warn("%s: read", __func__);
free(buf);
close(fd);
return (0);
}
if (r != sb.st_size) {
iwmbt_err("read len %d != file size %d",
(int) r,
(int) sb.st_size);
free(buf);
close(fd);
return (0);
}
/* We have everything, so! */
memset(fw, 0, sizeof(*fw));
fw->fwname = strdup(fwname);
fw->len = sb.st_size;
fw->buf = buf;
close(fd);
return (1);
}
void
iwmbt_fw_free(struct iwmbt_firmware *fw)
{
if (fw->fwname)
free(fw->fwname);
if (fw->buf)
free(fw->buf);
memset(fw, 0, sizeof(*fw));
}
char *
iwmbt_get_fwname(struct iwmbt_version *ver, struct iwmbt_boot_params *params,
const char *prefix, const char *suffix)
{
char *fwname;
switch (ver->hw_variant) {
case 0x0b: /* 8260 */
case 0x0c: /* 8265 */
asprintf(&fwname, "%s/ibt-%u-%u.%s",
prefix,
le16toh(ver->hw_variant),
le16toh(params->dev_revid),
suffix);
break;
case 0x11: /* 9560 */
case 0x12: /* 9260 */
case 0x13:
case 0x14: /* 22161 */
asprintf(&fwname, "%s/ibt-%u-%u-%u.%s",
prefix,
le16toh(ver->hw_variant),
le16toh(ver->hw_revision),
le16toh(ver->fw_revision),
suffix);
break;
default:
fwname = NULL;
}
return (fwname);
}

79
usr.sbin/bluetooth/iwmbtfw/iwmbt_fw.h Normal file
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@ -0,0 +1,79 @@
/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2013 Adrian Chadd <adrian@freebsd.org>
* Copyright (c) 2019 Vladimir Kondratyev <wulf@FreeBSD.org>
*
* 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.
*
* $FreeBSD$
*/
#ifndef __IWMBT_FW_H__
#define __IWMBT_FW_H__
struct iwmbt_version {
uint8_t status;
uint8_t hw_platform;
uint8_t hw_variant;
uint8_t hw_revision;
uint8_t fw_variant;
uint8_t fw_revision;
uint8_t fw_build_num;
uint8_t fw_build_ww;
uint8_t fw_build_yy;
uint8_t fw_patch_num;
} __attribute__ ((packed));
struct iwmbt_boot_params {
uint8_t status;
uint8_t otp_format;
uint8_t otp_content;
uint8_t otp_patch;
uint16_t dev_revid;
uint8_t secure_boot;
uint8_t key_from_hdr;
uint8_t key_type;
uint8_t otp_lock;
uint8_t api_lock;
uint8_t debug_lock;
uint8_t otp_bdaddr[6];
uint8_t min_fw_build_nn;
uint8_t min_fw_build_cw;
uint8_t min_fw_build_yy;
uint8_t limited_cce;
uint8_t unlocked_state;
} __attribute__ ((packed));
struct iwmbt_firmware {
char *fwname;
int len;
unsigned char *buf;
};
extern int iwmbt_fw_read(struct iwmbt_firmware *fw, const char *fwname);
extern void iwmbt_fw_free(struct iwmbt_firmware *fw);
extern char *iwmbt_get_fwname(struct iwmbt_version *ver,
struct iwmbt_boot_params *params, const char *prefix,
const char *suffix);
#endif

392
usr.sbin/bluetooth/iwmbtfw/iwmbt_hw.c Normal file
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@ -0,0 +1,392 @@
/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2019 Vladimir Kondratyev <wulf@FreeBSD.org>
*
* 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.
*
* $FreeBSD$
*/
#include <sys/types.h>
#include <sys/endian.h>
#include <sys/stat.h>
#include <err.h>
#include <errno.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <libusb.h>
#include "iwmbt_fw.h"
#include "iwmbt_hw.h"
#include "iwmbt_dbg.h"
#define XMIN(x, y) ((x) < (y) ? (x) : (y))
static int
iwmbt_send_fragment(struct libusb_device_handle *hdl,
uint8_t fragment_type, const void *data, uint8_t len, int timeout)
{
int ret, transferred;
uint8_t buf[IWMBT_HCI_MAX_CMD_SIZE];
struct iwmbt_hci_cmd *cmd = (struct iwmbt_hci_cmd *) buf;
memset(buf, 0, sizeof(buf));
cmd->opcode = htole16(0xfc09),
cmd->length = len + 1,
cmd->data[0] = fragment_type;
memcpy(cmd->data + 1, data, len);
ret = libusb_bulk_transfer(hdl,
IWMBT_BULK_OUT_ENDPOINT_ADDR,
(uint8_t *)cmd,
IWMBT_HCI_CMD_SIZE(cmd),
&transferred,
timeout);
if (ret < 0 || transferred != IWMBT_HCI_CMD_SIZE(cmd)) {
iwmbt_err("libusb_bulk_transfer() failed: err=%s, size=%zu",
libusb_strerror(ret),
IWMBT_HCI_CMD_SIZE(cmd));
return (-1);
}
ret = libusb_bulk_transfer(hdl,
IWMBT_BULK_IN_ENDPOINT_ADDR,
buf,
sizeof(buf),
&transferred,
timeout);
if (ret < 0) {
iwmbt_err("libusb_bulk_transfer() failed: err=%s",
libusb_strerror(ret));
return (-1);
}
return (0);
}
static int
iwmbt_hci_command(struct libusb_device_handle *hdl, struct iwmbt_hci_cmd *cmd,
void *event, int size, int *transferred, int timeout)
{
int ret;
ret = libusb_control_transfer(hdl,
LIBUSB_REQUEST_TYPE_CLASS | LIBUSB_RECIPIENT_DEVICE,
0,
0,
0,
(uint8_t *)cmd,
IWMBT_HCI_CMD_SIZE(cmd),
timeout);
if (ret < 0) {
iwmbt_err("libusb_control_transfer() failed: err=%s",
libusb_strerror(ret));
return (ret);
}
ret = libusb_interrupt_transfer(hdl,
IWMBT_INTERRUPT_ENDPOINT_ADDR,
event,
size,
transferred,
timeout);
if (ret < 0)
iwmbt_err("libusb_interrupt_transfer() failed: err=%s",
libusb_strerror(ret));
return (ret);
}
int
iwmbt_load_fwfile(struct libusb_device_handle *hdl,
const struct iwmbt_firmware *fw, uint32_t *boot_param)
{
int ready = 0, sent = 0;
int ret, transferred;
struct iwmbt_hci_cmd *cmd;
struct iwmbt_hci_event *event;
uint8_t buf[IWMBT_HCI_MAX_EVENT_SIZE];
#define IWMBT_SEND_FRAGMENT(fragment_type, size, msg) do { \
iwmbt_debug("transferring %d bytes, offset %d", size, sent); \
\
ret = iwmbt_send_fragment(hdl, \
fragment_type, \
fw->buf + sent, \
XMIN(size, fw->len - sent), \
IWMBT_HCI_CMD_TIMEOUT); \
\
if (ret < 0) { \
iwmbt_debug("Failed to send "msg": code=%d", ret); \
return (-1); \
} \
sent += size; \
} while (0)
if (fw->len < 644) {
iwmbt_err("Invalid size of firmware file (%d)", fw->len);
return (-1);
}
iwmbt_debug("file=%s, size=%d", fw->fwname, fw->len);
IWMBT_SEND_FRAGMENT(0x00, 0x80, "CCS segment");
IWMBT_SEND_FRAGMENT(0x03, 0x80, "public key / part 1");
IWMBT_SEND_FRAGMENT(0x03, 0x80, "public key / part 2");
/* skip 4 bytes */
sent += 4;
IWMBT_SEND_FRAGMENT(0x02, 0x80, "signature / part 1");
IWMBT_SEND_FRAGMENT(0x02, 0x80, "signature / part 2");
/*
* Send firmware chunks. Chunk len must be 4 byte aligned.
* multiple commands can be combined
*/
while (fw->len - sent - ready >= (int) sizeof(struct iwmbt_hci_cmd)) {
cmd = (struct iwmbt_hci_cmd *)(fw->buf + sent + ready);
/* Parse firmware for Intel Reset HCI command parameter */
if (cmd->opcode == htole16(0xfc0e)) {
*boot_param = le32dec(cmd->data);
iwmbt_debug("boot_param=0x%08x", *boot_param);
}
ready += IWMBT_HCI_CMD_SIZE(cmd);
while (ready >= 0xFC) {
IWMBT_SEND_FRAGMENT(0x01, 0xFC, "firmware chunk");
ready -= 0xFC;
}
if (ready > 0 && ready % 4 == 0) {
IWMBT_SEND_FRAGMENT(0x01, ready, "firmware chunk");
ready = 0;
}
}
/* Wait for firmware download completion event */
ret = libusb_interrupt_transfer(hdl,
IWMBT_INTERRUPT_ENDPOINT_ADDR,
buf,
sizeof(buf),
&transferred,
IWMBT_LOADCMPL_TIMEOUT);
if (ret < 0 || transferred < (int)sizeof(struct iwmbt_hci_event) + 1) {
iwmbt_err("libusb_interrupt_transfer() failed: "
"err=%s, size=%d",
libusb_strerror(ret),
transferred);
return (-1);
}
/* Expect Vendor Specific Event 0x06 */
event = (struct iwmbt_hci_event *)buf;
if (event->header.event != 0xFF || event->data[0] != 0x06) {
iwmbt_err("firmware download completion event missed");
return (-1);
}
return (0);
}
int
iwmbt_get_version(struct libusb_device_handle *hdl,
struct iwmbt_version *version)
{
int ret, transferred;
struct iwmbt_hci_event_cmd_compl*event;
struct iwmbt_hci_cmd cmd = {
.opcode = htole16(0xfc05),
.length = 0,
};
uint8_t buf[IWMBT_HCI_EVT_COMPL_SIZE(struct iwmbt_version)];
memset(buf, 0, sizeof(buf));
ret = iwmbt_hci_command(hdl,
&cmd,
buf,
sizeof(buf),
&transferred,
IWMBT_HCI_CMD_TIMEOUT);
if (ret < 0 || transferred != sizeof(buf)) {
iwmbt_debug("Can't get version: : code=%d, size=%d",
ret,
transferred);
return (-1);
}
event = (struct iwmbt_hci_event_cmd_compl *)buf;
memcpy(version, event->data, sizeof(struct iwmbt_version));
return (0);
}
int
iwmbt_get_boot_params(struct libusb_device_handle *hdl,
struct iwmbt_boot_params *params)
{
int ret, transferred = 0;
struct iwmbt_hci_event_cmd_compl *event;
struct iwmbt_hci_cmd cmd = {
.opcode = htole16(0xfc0d),
.length = 0,
};
uint8_t buf[IWMBT_HCI_EVT_COMPL_SIZE(struct iwmbt_boot_params)];
memset(buf, 0, sizeof(buf));
ret = iwmbt_hci_command(hdl,
&cmd,
buf,
sizeof(buf),
&transferred,
IWMBT_HCI_CMD_TIMEOUT);
if (ret < 0 || transferred != sizeof(buf)) {
iwmbt_debug("Can't get boot params: code=%d, size=%d",
ret,
transferred);
return (-1);
}
event = (struct iwmbt_hci_event_cmd_compl *)buf;
memcpy(params, event->data, sizeof(struct iwmbt_boot_params));
return (0);
}
int
iwmbt_intel_reset(struct libusb_device_handle *hdl, uint32_t boot_param)
{
int ret, transferred = 0;
struct iwmbt_hci_event *event;
static struct iwmbt_hci_cmd cmd = {
.opcode = htole16(0xfc01),
.length = 8,
.data = { 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00 },
};
uint8_t buf[IWMBT_HCI_MAX_EVENT_SIZE];
le32enc(cmd.data + 4, boot_param);
memset(buf, 0, sizeof(buf));
ret = iwmbt_hci_command(hdl,
&cmd,
buf,
sizeof(buf),
&transferred,
IWMBT_HCI_CMD_TIMEOUT);
if (ret < 0 || transferred < (int)sizeof(struct iwmbt_hci_event) + 1) {
iwmbt_debug("Intel Reset command failed: code=%d, size=%d",
ret,
transferred);
return (ret);
}
/* expect Vendor Specific Event 0x02 */
event = (struct iwmbt_hci_event *)buf;
if (event->header.event != 0xFF || event->data[0] != 0x02) {
iwmbt_err("Intel Reset completion event missed");
return (-1);
}
return (0);
}
int
iwmbt_load_ddc(struct libusb_device_handle *hdl,
const struct iwmbt_firmware *ddc)
{
int size, sent = 0;
int ret, transferred;
uint8_t buf[IWMBT_HCI_MAX_CMD_SIZE];
struct iwmbt_hci_cmd *cmd = (struct iwmbt_hci_cmd *)buf;
size = ddc->len;
iwmbt_debug("file=%s, size=%d", ddc->fwname, size);
while (size > 0) {
memset(buf, 0, sizeof(buf));
cmd->opcode = htole16(0xfc8b);
cmd->length = ddc->buf[sent] + 1;
memcpy(cmd->data, ddc->buf + sent, XMIN(ddc->buf[sent], size));
iwmbt_debug("transferring %d bytes, offset %d",
cmd->length,
sent);
size -= cmd->length;
sent += cmd->length;
ret = iwmbt_hci_command(hdl,
cmd,
buf,
sizeof(buf),
&transferred,
IWMBT_HCI_CMD_TIMEOUT);
if (ret < 0) {
iwmbt_debug("Intel Write DDC failed: code=%d", ret);
return (-1);
}
}
return (0);
}
int
iwmbt_set_event_mask(struct libusb_device_handle *hdl)
{
int ret, transferred = 0;
static struct iwmbt_hci_cmd cmd = {
.opcode = htole16(0xfc52),
.length = 8,
.data = { 0x87, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
};
uint8_t buf[IWMBT_HCI_MAX_EVENT_SIZE];
ret = iwmbt_hci_command(hdl,
&cmd,
buf,
sizeof(buf),
&transferred,
IWMBT_HCI_CMD_TIMEOUT);
if (ret < 0)
iwmbt_debug("Intel Set Event Mask failed: code=%d", ret);
return (ret);
}

88
usr.sbin/bluetooth/iwmbtfw/iwmbt_hw.h Normal file
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@ -0,0 +1,88 @@
/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2019 Vladimir Kondratyev <wulf@FreeBSD.org>
*
* 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.
*
* $FreeBSD$
*/
#ifndef __IWMBT_HW_H__
#define __IWMBT_HW_H__
/* USB control request (HCI command) structure */
struct iwmbt_hci_cmd {
uint16_t opcode;
uint8_t length;
uint8_t data[];
} __attribute__ ((packed));
#define IWMBT_HCI_CMD_SIZE(cmd) \
((cmd)->length + offsetof(struct iwmbt_hci_cmd, data))
/* USB interrupt transfer HCI event header structure */
struct iwmbt_hci_evhdr {
uint8_t event;
uint8_t length;
} __attribute__ ((packed));
/* USB interrupt transfer (generic HCI event) structure */
struct iwmbt_hci_event {
struct iwmbt_hci_evhdr header;
uint8_t data[];
} __attribute__ ((packed));
/* USB interrupt transfer (HCI command completion event) structure */
struct iwmbt_hci_event_cmd_compl {
struct iwmbt_hci_evhdr header;
uint8_t numpkt;
uint16_t opcode;
uint8_t data[];
} __attribute__ ((packed));
#define IWMBT_HCI_EVT_COMPL_SIZE(payload) \
(offsetof(struct iwmbt_hci_event_cmd_compl, data) + sizeof(payload))
#define IWMBT_CONTROL_ENDPOINT_ADDR 0x00
#define IWMBT_INTERRUPT_ENDPOINT_ADDR 0x81
#define IWMBT_BULK_IN_ENDPOINT_ADDR 0x82
#define IWMBT_BULK_OUT_ENDPOINT_ADDR 0x02
#define IWMBT_HCI_MAX_CMD_SIZE 256
#define IWMBT_HCI_MAX_EVENT_SIZE 16
#define IWMBT_HCI_CMD_TIMEOUT 2000 /* ms */
#define IWMBT_LOADCMPL_TIMEOUT 5000 /* ms */
extern int iwmbt_load_fwfile(struct libusb_device_handle *hdl,
const struct iwmbt_firmware *fw, uint32_t *boot_param);
extern int iwmbt_get_version(struct libusb_device_handle *hdl,
struct iwmbt_version *version);
extern int iwmbt_get_boot_params(struct libusb_device_handle *hdl,
struct iwmbt_boot_params *params);
extern int iwmbt_intel_reset(struct libusb_device_handle *hdl,
uint32_t boot_param);
extern int iwmbt_load_ddc(struct libusb_device_handle *hdl,
const struct iwmbt_firmware *ddc);
extern int iwmbt_set_event_mask(struct libusb_device_handle *hdl);
#endif

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usr.sbin/bluetooth/iwmbtfw/iwmbtfw.8 Normal file
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.\" Copyright (c) 2013, 2016 Adrian Chadd <adrian@freebsd.org>
.\" Copyright (c) 2019 Vladimir Kondratyev <wulf@FreeBSD.org>
.\"
.\" 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.
.\"
.\" $FreeBSD$
.\"
.Dd June 4, 2019
.Dt IWMBTFW 8
.Os
.Sh NAME
.Nm iwmbtfw
.Nd firmware download utility for Intel Wireless 8260/8265 chip based Bluetooth
USB devices
.Sh SYNOPSIS
.Nm
.Fl d Ar device_name
.Fl f Ar firmware_path
.Nm
.Fl h
.Sh DESCRIPTION
The
.Nm
utility downloads the specified firmware file to the specified
.Xr ugen 4
device.
.Pp
This utility will
.Em only
work with Intel Wireless 8260/8265 chip based Bluetooth USB devices and some of
their successors.
The identification is currently based on USB vendor ID/product ID pair.
The vendor ID should be 0x8087
.Pq Dv USB_VENDOR_INTEL2
and the product ID should be one of the supported devices.
.Pp
Firmware files are available in the
.Pa comms/iwmbt-firmware
port.
.Pp
The
.Nm
utility will query the device to determine which firmware image and board
configuration to load in at runtime.
.Pp
The options are as follows:
.Bl -tag -width indent
.It Fl D
Enable verbose debugging.
.It Fl d Ar device_name
Specify
.Xr ugen 4
device name.
.It Fl I
Enable informational debugging.
.It Fl f Ar firmware_path
Specify the directory containing the firmware files to search and upload.
.It Fl h
Display usage message and exit.
.El
.Sh EXIT STATUS
.Ex -std
.Sh SEE ALSO
.Xr libusb 3 ,
.Xr ugen 4 ,
.Xr devd 8
.Sh AUTHORS
.Nm
is based on
.Xr ath3kfw 8
utility used as firmware downloader template and on Linux btintel driver
source code.
It is written by
.An Vladimir Kondratyev Aq Mt wulf@FreeBSD.org .
.Sh BUGS
Most likely.
Please report if found.

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usr.sbin/bluetooth/iwmbtfw/iwmbtfw.conf Normal file
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# $FreeBSD$
#
# Download Intel Wireless 8260/8265 bluetooth adaptor firmware
notify 100 {
match "system" "USB";
match "subsystem" "DEVICE";
match "type" "ATTACH";
match "vendor" "0x8087";
match "product" "(0x0a2b|0x0aaa|0x0025|0x0026|0x0029)";
action "/usr/sbin/iwmbtfw -d $cdev -f /usr/local/share/iwmbt-firmware";
};

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usr.sbin/bluetooth/iwmbtfw/main.c Normal file
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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2013 Adrian Chadd <adrian@freebsd.org>
* Copyright (c) 2019 Vladimir Kondratyev <wulf@FreeBSD.org>
*
* 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.
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/endian.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <libgen.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <libusb.h>
#include "iwmbt_fw.h"
#include "iwmbt_hw.h"
#include "iwmbt_dbg.h"
#define _DEFAULT_IWMBT_FIRMWARE_PATH "/usr/share/firmware/intel"
int iwmbt_do_debug = 0;
int iwmbt_do_info = 0;
struct iwmbt_devid {
uint16_t product_id;
uint16_t vendor_id;
};
static struct iwmbt_devid iwmbt_list[] = {
/* Intel Wireless 8260/8265 and successors */
{ .vendor_id = 0x8087, .product_id = 0x0a2b },
{ .vendor_id = 0x8087, .product_id = 0x0aaa },
{ .vendor_id = 0x8087, .product_id = 0x0025 },
{ .vendor_id = 0x8087, .product_id = 0x0026 },
{ .vendor_id = 0x8087, .product_id = 0x0029 },
};
static int
iwmbt_is_8260(struct libusb_device_descriptor *d)
{
int i;
/* Search looking for whether it's an 8260/8265 */
for (i = 0; i < (int) nitems(iwmbt_list); i++) {
if ((iwmbt_list[i].product_id == d->idProduct) &&
(iwmbt_list[i].vendor_id == d->idVendor)) {
iwmbt_info("found 8260/8265");
return (1);
}
}
/* Not found */
return (0);
}
static libusb_device *
iwmbt_find_device(libusb_context *ctx, int bus_id, int dev_id)
{
libusb_device **list, *dev = NULL, *found = NULL;
struct libusb_device_descriptor d;
ssize_t cnt, i;
int r;
cnt = libusb_get_device_list(ctx, &list);
if (cnt < 0) {
iwmbt_err("libusb_get_device_list() failed: code %lld",
(long long int) cnt);
return (NULL);
}
/*
* Scan through USB device list.
*/
for (i = 0; i < cnt; i++) {
dev = list[i];
if (bus_id == libusb_get_bus_number(dev) &&
dev_id == libusb_get_device_address(dev)) {
/* Get the device descriptor for this device entry */
r = libusb_get_device_descriptor(dev, &d);
if (r != 0) {
iwmbt_err("libusb_get_device_descriptor: %s",
libusb_strerror(r));
break;
}
/* Match on the vendor/product id */
if (iwmbt_is_8260(&d)) {
/*
* Take a reference so it's not freed later on.
*/
found = libusb_ref_device(dev);
break;
}
}
}
libusb_free_device_list(list, 1);
return (found);
}
static void
iwmbt_dump_version(struct iwmbt_version *ver)
{
iwmbt_info("status 0x%02x", ver->status);
iwmbt_info("hw_platform 0x%02x", ver->hw_platform);
iwmbt_info("hw_variant 0x%02x", ver->hw_variant);
iwmbt_info("hw_revision 0x%02x", ver->hw_revision);
iwmbt_info("fw_variant 0x%02x", ver->fw_variant);
iwmbt_info("fw_revision 0x%02x", ver->fw_revision);
iwmbt_info("fw_build_num 0x%02x", ver->fw_build_num);
iwmbt_info("fw_build_ww 0x%02x", ver->fw_build_ww);
iwmbt_info("fw_build_yy 0x%02x", ver->fw_build_yy);
iwmbt_info("fw_patch_num 0x%02x", ver->fw_patch_num);
}
static void
iwmbt_dump_boot_params(struct iwmbt_boot_params *params)
{
iwmbt_info("Device revision: %u", le16toh(params->dev_revid));
iwmbt_info("Secure Boot: %s", params->secure_boot ? "on" : "off");
iwmbt_info("OTP lock: %s", params->otp_lock ? "on" : "off");
iwmbt_info("API lock: %s", params->api_lock ? "on" : "off");
iwmbt_info("Debug lock: %s", params->debug_lock ? "on" : "off");
iwmbt_info("Minimum firmware build %u week %u year %u",
params->min_fw_build_nn,
params->min_fw_build_cw,
2000 + params->min_fw_build_yy);
iwmbt_info("OTC BD_ADDR: %02x:%02x:%02x:%02x:%02x:%02x",
params->otp_bdaddr[5],
params->otp_bdaddr[4],
params->otp_bdaddr[3],
params->otp_bdaddr[2],
params->otp_bdaddr[1],
params->otp_bdaddr[0]);
}
static int
iwmbt_init_firmware(libusb_device_handle *hdl, const char *firmware_path,
uint32_t *boot_param)
{
struct iwmbt_firmware fw;
int ret;
iwmbt_debug("loading %s", firmware_path);
/* Read in the firmware */
if (iwmbt_fw_read(&fw, firmware_path) <= 0) {
iwmbt_debug("iwmbt_fw_read() failed");
return (-1);
}
/* Load in the firmware */
ret = iwmbt_load_fwfile(hdl, &fw, boot_param);
if (ret < 0)
iwmbt_debug("Loading firmware file failed");
/* free it */
iwmbt_fw_free(&fw);
return (ret);
}
static int
iwmbt_init_ddc(libusb_device_handle *hdl, const char *ddc_path)
{
struct iwmbt_firmware ddc;
int ret;
iwmbt_debug("loading %s", ddc_path);
/* Read in the DDC file */
if (iwmbt_fw_read(&ddc, ddc_path) <= 0) {
iwmbt_debug("iwmbt_fw_read() failed");
return (-1);
}
/* Load in the DDC file */
ret = iwmbt_load_ddc(hdl, &ddc);
if (ret < 0)
iwmbt_debug("Loading DDC file failed");
/* free it */
iwmbt_fw_free(&ddc);
return (ret);
}
/*
* Parse ugen name and extract device's bus and address
*/
static int
parse_ugen_name(char const *ugen, uint8_t *bus, uint8_t *addr)
{
char *ep;
if (strncmp(ugen, "ugen", 4) != 0)
return (-1);
*bus = (uint8_t) strtoul(ugen + 4, &ep, 10);
if (*ep != '.')
return (-1);
*addr = (uint8_t) strtoul(ep + 1, &ep, 10);
if (*ep != '\0')
return (-1);
return (0);
}
static void
usage(void)
{
fprintf(stderr,
"Usage: iwmbtfw (-D) -d ugenX.Y (-f firmware path) (-I)\n");
fprintf(stderr, " -D: enable debugging\n");
fprintf(stderr, " -d: device to operate upon\n");
fprintf(stderr, " -f: firmware path, if not default\n");
fprintf(stderr, " -I: enable informational output\n");
exit(127);
}
int
main(int argc, char *argv[])
{
libusb_context *ctx = NULL;
libusb_device *dev = NULL;
libusb_device_handle *hdl = NULL;
static struct iwmbt_version ver;
static struct iwmbt_boot_params params;
uint32_t boot_param;
int r;
uint8_t bus_id = 0, dev_id = 0;
int devid_set = 0;
int n;
char *firmware_dir = NULL;
char *firmware_path = NULL;
int retcode = 1;
/* Parse command line arguments */
while ((n = getopt(argc, argv, "Dd:f:hIm:p:v:")) != -1) {
switch (n) {
case 'd': /* ugen device name */
devid_set = 1;
if (parse_ugen_name(optarg, &bus_id, &dev_id) < 0)
usage();
break;
case 'D':
iwmbt_do_debug = 1;
break;
case 'f': /* firmware dir */
if (firmware_dir)
free(firmware_dir);
firmware_dir = strdup(optarg);
break;
case 'I':
iwmbt_do_info = 1;
break;
case 'h':
default:
usage();
break;
/* NOT REACHED */
}
}
/* Ensure the devid was given! */
if (devid_set == 0) {
usage();
/* NOTREACHED */
}
/* libusb setup */
r = libusb_init(&ctx);
if (r != 0) {
iwmbt_err("libusb_init failed: code %d", r);
exit(127);
}
iwmbt_debug("opening dev %d.%d", (int) bus_id, (int) dev_id);
/* Find a device based on the bus/dev id */
dev = iwmbt_find_device(ctx, bus_id, dev_id);
if (dev == NULL) {
iwmbt_err("device not found");
goto shutdown;
}
/* XXX enforce that bInterfaceNumber is 0 */
/* XXX enforce the device/product id if they're non-zero */
/* Grab device handle */
r = libusb_open(dev, &hdl);
if (r != 0) {
iwmbt_err("libusb_open() failed: code %d", r);
goto shutdown;
}
/* Check if ng_ubt is attached */
r = libusb_kernel_driver_active(hdl, 0);
if (r < 0) {
iwmbt_err("libusb_kernel_driver_active() failed: code %d", r);
goto shutdown;
}
if (r > 0) {
iwmbt_info("Firmware has already been downloaded");
retcode = 0;
goto shutdown;
}
/* Get Intel version */
r = iwmbt_get_version(hdl, &ver);
if (r < 0) {
iwmbt_debug("iwmbt_get_version() failedL code %d", r);
goto shutdown;
}
iwmbt_dump_version(&ver);
iwmbt_debug("fw_variant=0x%02x", (int) ver.fw_variant);
/* fw_variant = 0x06 bootloader mode / 0x23 operational mode */
if (ver.fw_variant == 0x23) {
iwmbt_info("Firmware has already been downloaded");
retcode = 0;
goto reset;
}
if (ver.fw_variant != 0x06){
iwmbt_err("unknown fw_variant 0x%02x", (int) ver.fw_variant);
goto shutdown;
}
/* Read Intel Secure Boot Params */
r = iwmbt_get_boot_params(hdl, &params);
if (r < 0) {
iwmbt_debug("iwmbt_get_boot_params() failed!");
goto shutdown;
}
iwmbt_dump_boot_params(&params);
/* Check if firmware fragments are ACKed with a cmd complete event */
if (params.limited_cce != 0x00) {
iwmbt_err("Unsupported Intel firmware loading method (%u)",
params.limited_cce);
goto shutdown;
}
/* Default the firmware path */
if (firmware_dir == NULL)
firmware_dir = strdup(_DEFAULT_IWMBT_FIRMWARE_PATH);
firmware_path = iwmbt_get_fwname(&ver, &params, firmware_dir, "sfi");
if (firmware_path == NULL)
goto shutdown;
iwmbt_debug("firmware_path = %s", firmware_path);
/* Download firmware and parse it for magic Intel Reset parameter */
r = iwmbt_init_firmware(hdl, firmware_path, &boot_param);
free(firmware_path);
if (r < 0)
goto shutdown;
iwmbt_info("Firmware download complete");
r = iwmbt_intel_reset(hdl, boot_param);
if (r < 0) {
iwmbt_debug("iwmbt_intel_reset() failed!");
goto shutdown;
}
iwmbt_info("Firmware operational");
/* Once device is running in operational mode we can ignore failures */
retcode = 0;
/* Execute Read Intel Version one more time */
r = iwmbt_get_version(hdl, &ver);
if (r == 0)
iwmbt_dump_version(&ver);
/* Apply the device configuration (DDC) parameters */
firmware_path = iwmbt_get_fwname(&ver, &params, firmware_dir, "ddc");
iwmbt_debug("ddc_path = %s", firmware_path);
if (firmware_path != NULL) {
r = iwmbt_init_ddc(hdl, firmware_path);
if (r == 0)
iwmbt_info("DDC download complete");
free(firmware_path);
}
/* Set Intel Event mask */
r = iwmbt_set_event_mask(hdl);
if (r == 0)
iwmbt_info("Intel Event Mask is set");
reset:
/* Ask kernel driver to probe and attach device again */
r = libusb_reset_device(hdl);
if (r != 0)
iwmbt_err("libusb_reset_device() failed: %s",
libusb_strerror(r));
shutdown:
/* Shutdown */
if (hdl != NULL)
libusb_close(hdl);
if (dev != NULL)
libusb_unref_device(dev);
if (ctx != NULL)
libusb_exit(ctx);
if (retcode == 0)
iwmbt_info("Firmware download is succesful!");
else
iwmbt_err("Firmware download failed!");
return (retcode);
}