287 lines
6.8 KiB
C
287 lines
6.8 KiB
C
/*
|
|
*
|
|
* Broadcom Blutonium firmware driver
|
|
*
|
|
* Copyright (C) 2003 Maxim Krasnyansky <maxk@qualcomm.com>
|
|
* Copyright (C) 2003 Marcel Holtmann <marcel@holtmann.org>
|
|
*
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
|
|
#include <linux/atomic.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/types.h>
|
|
#include <linux/errno.h>
|
|
|
|
#include <linux/device.h>
|
|
#include <linux/firmware.h>
|
|
|
|
#include <linux/usb.h>
|
|
|
|
#include <net/bluetooth/bluetooth.h>
|
|
|
|
#define VERSION "1.2"
|
|
|
|
static const struct usb_device_id bcm203x_table[] = {
|
|
/* Broadcom Blutonium (BCM2033) */
|
|
{ USB_DEVICE(0x0a5c, 0x2033) },
|
|
|
|
{ } /* Terminating entry */
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(usb, bcm203x_table);
|
|
|
|
#define BCM203X_ERROR 0
|
|
#define BCM203X_RESET 1
|
|
#define BCM203X_LOAD_MINIDRV 2
|
|
#define BCM203X_SELECT_MEMORY 3
|
|
#define BCM203X_CHECK_MEMORY 4
|
|
#define BCM203X_LOAD_FIRMWARE 5
|
|
#define BCM203X_CHECK_FIRMWARE 6
|
|
|
|
#define BCM203X_IN_EP 0x81
|
|
#define BCM203X_OUT_EP 0x02
|
|
|
|
struct bcm203x_data {
|
|
struct usb_device *udev;
|
|
|
|
unsigned long state;
|
|
|
|
struct work_struct work;
|
|
atomic_t shutdown;
|
|
|
|
struct urb *urb;
|
|
unsigned char *buffer;
|
|
|
|
unsigned char *fw_data;
|
|
unsigned int fw_size;
|
|
unsigned int fw_sent;
|
|
};
|
|
|
|
static void bcm203x_complete(struct urb *urb)
|
|
{
|
|
struct bcm203x_data *data = urb->context;
|
|
struct usb_device *udev = urb->dev;
|
|
int len;
|
|
|
|
BT_DBG("udev %p urb %p", udev, urb);
|
|
|
|
if (urb->status) {
|
|
BT_ERR("URB failed with status %d", urb->status);
|
|
data->state = BCM203X_ERROR;
|
|
return;
|
|
}
|
|
|
|
switch (data->state) {
|
|
case BCM203X_LOAD_MINIDRV:
|
|
memcpy(data->buffer, "#", 1);
|
|
|
|
usb_fill_bulk_urb(urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP),
|
|
data->buffer, 1, bcm203x_complete, data);
|
|
|
|
data->state = BCM203X_SELECT_MEMORY;
|
|
|
|
/* use workqueue to have a small delay */
|
|
schedule_work(&data->work);
|
|
break;
|
|
|
|
case BCM203X_SELECT_MEMORY:
|
|
usb_fill_int_urb(urb, udev, usb_rcvintpipe(udev, BCM203X_IN_EP),
|
|
data->buffer, 32, bcm203x_complete, data, 1);
|
|
|
|
data->state = BCM203X_CHECK_MEMORY;
|
|
|
|
if (usb_submit_urb(data->urb, GFP_ATOMIC) < 0)
|
|
BT_ERR("Can't submit URB");
|
|
break;
|
|
|
|
case BCM203X_CHECK_MEMORY:
|
|
if (data->buffer[0] != '#') {
|
|
BT_ERR("Memory select failed");
|
|
data->state = BCM203X_ERROR;
|
|
break;
|
|
}
|
|
|
|
data->state = BCM203X_LOAD_FIRMWARE;
|
|
|
|
case BCM203X_LOAD_FIRMWARE:
|
|
if (data->fw_sent == data->fw_size) {
|
|
usb_fill_int_urb(urb, udev, usb_rcvintpipe(udev, BCM203X_IN_EP),
|
|
data->buffer, 32, bcm203x_complete, data, 1);
|
|
|
|
data->state = BCM203X_CHECK_FIRMWARE;
|
|
} else {
|
|
len = min_t(uint, data->fw_size - data->fw_sent, 4096);
|
|
|
|
usb_fill_bulk_urb(urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP),
|
|
data->fw_data + data->fw_sent, len, bcm203x_complete, data);
|
|
|
|
data->fw_sent += len;
|
|
}
|
|
|
|
if (usb_submit_urb(data->urb, GFP_ATOMIC) < 0)
|
|
BT_ERR("Can't submit URB");
|
|
break;
|
|
|
|
case BCM203X_CHECK_FIRMWARE:
|
|
if (data->buffer[0] != '.') {
|
|
BT_ERR("Firmware loading failed");
|
|
data->state = BCM203X_ERROR;
|
|
break;
|
|
}
|
|
|
|
data->state = BCM203X_RESET;
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void bcm203x_work(struct work_struct *work)
|
|
{
|
|
struct bcm203x_data *data =
|
|
container_of(work, struct bcm203x_data, work);
|
|
|
|
if (atomic_read(&data->shutdown))
|
|
return;
|
|
|
|
if (usb_submit_urb(data->urb, GFP_KERNEL) < 0)
|
|
BT_ERR("Can't submit URB");
|
|
}
|
|
|
|
static int bcm203x_probe(struct usb_interface *intf, const struct usb_device_id *id)
|
|
{
|
|
const struct firmware *firmware;
|
|
struct usb_device *udev = interface_to_usbdev(intf);
|
|
struct bcm203x_data *data;
|
|
int size;
|
|
|
|
BT_DBG("intf %p id %p", intf, id);
|
|
|
|
if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
|
|
return -ENODEV;
|
|
|
|
data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
|
|
if (!data) {
|
|
BT_ERR("Can't allocate memory for data structure");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
data->udev = udev;
|
|
data->state = BCM203X_LOAD_MINIDRV;
|
|
|
|
data->urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
if (!data->urb) {
|
|
BT_ERR("Can't allocate URB");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
if (request_firmware(&firmware, "BCM2033-MD.hex", &udev->dev) < 0) {
|
|
BT_ERR("Mini driver request failed");
|
|
usb_free_urb(data->urb);
|
|
return -EIO;
|
|
}
|
|
|
|
BT_DBG("minidrv data %p size %zu", firmware->data, firmware->size);
|
|
|
|
size = max_t(uint, firmware->size, 4096);
|
|
|
|
data->buffer = kmalloc(size, GFP_KERNEL);
|
|
if (!data->buffer) {
|
|
BT_ERR("Can't allocate memory for mini driver");
|
|
release_firmware(firmware);
|
|
usb_free_urb(data->urb);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
memcpy(data->buffer, firmware->data, firmware->size);
|
|
|
|
usb_fill_bulk_urb(data->urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP),
|
|
data->buffer, firmware->size, bcm203x_complete, data);
|
|
|
|
release_firmware(firmware);
|
|
|
|
if (request_firmware(&firmware, "BCM2033-FW.bin", &udev->dev) < 0) {
|
|
BT_ERR("Firmware request failed");
|
|
usb_free_urb(data->urb);
|
|
kfree(data->buffer);
|
|
return -EIO;
|
|
}
|
|
|
|
BT_DBG("firmware data %p size %zu", firmware->data, firmware->size);
|
|
|
|
data->fw_data = kmemdup(firmware->data, firmware->size, GFP_KERNEL);
|
|
if (!data->fw_data) {
|
|
BT_ERR("Can't allocate memory for firmware image");
|
|
release_firmware(firmware);
|
|
usb_free_urb(data->urb);
|
|
kfree(data->buffer);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
data->fw_size = firmware->size;
|
|
data->fw_sent = 0;
|
|
|
|
release_firmware(firmware);
|
|
|
|
INIT_WORK(&data->work, bcm203x_work);
|
|
|
|
usb_set_intfdata(intf, data);
|
|
|
|
/* use workqueue to have a small delay */
|
|
schedule_work(&data->work);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void bcm203x_disconnect(struct usb_interface *intf)
|
|
{
|
|
struct bcm203x_data *data = usb_get_intfdata(intf);
|
|
|
|
BT_DBG("intf %p", intf);
|
|
|
|
atomic_inc(&data->shutdown);
|
|
cancel_work_sync(&data->work);
|
|
|
|
usb_kill_urb(data->urb);
|
|
|
|
usb_set_intfdata(intf, NULL);
|
|
|
|
usb_free_urb(data->urb);
|
|
kfree(data->fw_data);
|
|
kfree(data->buffer);
|
|
}
|
|
|
|
static struct usb_driver bcm203x_driver = {
|
|
.name = "bcm203x",
|
|
.probe = bcm203x_probe,
|
|
.disconnect = bcm203x_disconnect,
|
|
.id_table = bcm203x_table,
|
|
.disable_hub_initiated_lpm = 1,
|
|
};
|
|
|
|
module_usb_driver(bcm203x_driver);
|
|
|
|
MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
|
|
MODULE_DESCRIPTION("Broadcom Blutonium firmware driver ver " VERSION);
|
|
MODULE_VERSION(VERSION);
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_FIRMWARE("BCM2033-MD.hex");
|
|
MODULE_FIRMWARE("BCM2033-FW.bin");
|