mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 19:00:25 +00:00
![Marcel Holtmann](/assets/img/avatar_default.png)
The manually coded frame reassembly is actually broken. The h4_recv_buf helper from the UART driver is a perfect fit for frame reassembly for this driver. So just export that function and use it here as well. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
460 lines
9.5 KiB
C
460 lines
9.5 KiB
C
/*
|
|
*
|
|
* Digianswer Bluetooth USB driver
|
|
*
|
|
* Copyright (C) 2004-2007 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/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/types.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/skbuff.h>
|
|
|
|
#include <linux/usb.h>
|
|
|
|
#include <net/bluetooth/bluetooth.h>
|
|
#include <net/bluetooth/hci_core.h>
|
|
|
|
#include "hci_uart.h"
|
|
|
|
#define VERSION "0.11"
|
|
|
|
static const struct usb_device_id bpa10x_table[] = {
|
|
/* Tektronix BPA 100/105 (Digianswer) */
|
|
{ USB_DEVICE(0x08fd, 0x0002) },
|
|
|
|
{ } /* Terminating entry */
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(usb, bpa10x_table);
|
|
|
|
struct bpa10x_data {
|
|
struct hci_dev *hdev;
|
|
struct usb_device *udev;
|
|
|
|
struct usb_anchor tx_anchor;
|
|
struct usb_anchor rx_anchor;
|
|
|
|
struct sk_buff *rx_skb[2];
|
|
};
|
|
|
|
static void bpa10x_tx_complete(struct urb *urb)
|
|
{
|
|
struct sk_buff *skb = urb->context;
|
|
struct hci_dev *hdev = (struct hci_dev *) skb->dev;
|
|
|
|
BT_DBG("%s urb %p status %d count %d", hdev->name,
|
|
urb, urb->status, urb->actual_length);
|
|
|
|
if (!test_bit(HCI_RUNNING, &hdev->flags))
|
|
goto done;
|
|
|
|
if (!urb->status)
|
|
hdev->stat.byte_tx += urb->transfer_buffer_length;
|
|
else
|
|
hdev->stat.err_tx++;
|
|
|
|
done:
|
|
kfree(urb->setup_packet);
|
|
|
|
kfree_skb(skb);
|
|
}
|
|
|
|
#define HCI_VENDOR_HDR_SIZE 5
|
|
|
|
#define HCI_RECV_VENDOR \
|
|
.type = HCI_VENDOR_PKT, \
|
|
.hlen = HCI_VENDOR_HDR_SIZE, \
|
|
.loff = 3, \
|
|
.lsize = 2, \
|
|
.maxlen = HCI_MAX_FRAME_SIZE
|
|
|
|
static const struct h4_recv_pkt bpa10x_recv_pkts[] = {
|
|
{ H4_RECV_ACL, .recv = hci_recv_frame },
|
|
{ H4_RECV_SCO, .recv = hci_recv_frame },
|
|
{ H4_RECV_EVENT, .recv = hci_recv_frame },
|
|
{ HCI_RECV_VENDOR, .recv = hci_recv_diag },
|
|
};
|
|
|
|
static void bpa10x_rx_complete(struct urb *urb)
|
|
{
|
|
struct hci_dev *hdev = urb->context;
|
|
struct bpa10x_data *data = hci_get_drvdata(hdev);
|
|
int err;
|
|
|
|
BT_DBG("%s urb %p status %d count %d", hdev->name,
|
|
urb, urb->status, urb->actual_length);
|
|
|
|
if (!test_bit(HCI_RUNNING, &hdev->flags))
|
|
return;
|
|
|
|
if (urb->status == 0) {
|
|
bool idx = usb_pipebulk(urb->pipe);
|
|
|
|
data->rx_skb[idx] = h4_recv_buf(hdev, data->rx_skb[idx],
|
|
urb->transfer_buffer,
|
|
urb->actual_length,
|
|
bpa10x_recv_pkts,
|
|
ARRAY_SIZE(bpa10x_recv_pkts));
|
|
if (IS_ERR(data->rx_skb[idx])) {
|
|
BT_ERR("%s corrupted event packet", hdev->name);
|
|
hdev->stat.err_rx++;
|
|
data->rx_skb[idx] = NULL;
|
|
}
|
|
}
|
|
|
|
usb_anchor_urb(urb, &data->rx_anchor);
|
|
|
|
err = usb_submit_urb(urb, GFP_ATOMIC);
|
|
if (err < 0) {
|
|
BT_ERR("%s urb %p failed to resubmit (%d)",
|
|
hdev->name, urb, -err);
|
|
usb_unanchor_urb(urb);
|
|
}
|
|
}
|
|
|
|
static inline int bpa10x_submit_intr_urb(struct hci_dev *hdev)
|
|
{
|
|
struct bpa10x_data *data = hci_get_drvdata(hdev);
|
|
struct urb *urb;
|
|
unsigned char *buf;
|
|
unsigned int pipe;
|
|
int err, size = 16;
|
|
|
|
BT_DBG("%s", hdev->name);
|
|
|
|
urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
if (!urb)
|
|
return -ENOMEM;
|
|
|
|
buf = kmalloc(size, GFP_KERNEL);
|
|
if (!buf) {
|
|
usb_free_urb(urb);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
pipe = usb_rcvintpipe(data->udev, 0x81);
|
|
|
|
usb_fill_int_urb(urb, data->udev, pipe, buf, size,
|
|
bpa10x_rx_complete, hdev, 1);
|
|
|
|
urb->transfer_flags |= URB_FREE_BUFFER;
|
|
|
|
usb_anchor_urb(urb, &data->rx_anchor);
|
|
|
|
err = usb_submit_urb(urb, GFP_KERNEL);
|
|
if (err < 0) {
|
|
BT_ERR("%s urb %p submission failed (%d)",
|
|
hdev->name, urb, -err);
|
|
usb_unanchor_urb(urb);
|
|
}
|
|
|
|
usb_free_urb(urb);
|
|
|
|
return err;
|
|
}
|
|
|
|
static inline int bpa10x_submit_bulk_urb(struct hci_dev *hdev)
|
|
{
|
|
struct bpa10x_data *data = hci_get_drvdata(hdev);
|
|
struct urb *urb;
|
|
unsigned char *buf;
|
|
unsigned int pipe;
|
|
int err, size = 64;
|
|
|
|
BT_DBG("%s", hdev->name);
|
|
|
|
urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
if (!urb)
|
|
return -ENOMEM;
|
|
|
|
buf = kmalloc(size, GFP_KERNEL);
|
|
if (!buf) {
|
|
usb_free_urb(urb);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
pipe = usb_rcvbulkpipe(data->udev, 0x82);
|
|
|
|
usb_fill_bulk_urb(urb, data->udev, pipe,
|
|
buf, size, bpa10x_rx_complete, hdev);
|
|
|
|
urb->transfer_flags |= URB_FREE_BUFFER;
|
|
|
|
usb_anchor_urb(urb, &data->rx_anchor);
|
|
|
|
err = usb_submit_urb(urb, GFP_KERNEL);
|
|
if (err < 0) {
|
|
BT_ERR("%s urb %p submission failed (%d)",
|
|
hdev->name, urb, -err);
|
|
usb_unanchor_urb(urb);
|
|
}
|
|
|
|
usb_free_urb(urb);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int bpa10x_open(struct hci_dev *hdev)
|
|
{
|
|
struct bpa10x_data *data = hci_get_drvdata(hdev);
|
|
int err;
|
|
|
|
BT_DBG("%s", hdev->name);
|
|
|
|
err = bpa10x_submit_intr_urb(hdev);
|
|
if (err < 0)
|
|
goto error;
|
|
|
|
err = bpa10x_submit_bulk_urb(hdev);
|
|
if (err < 0)
|
|
goto error;
|
|
|
|
return 0;
|
|
|
|
error:
|
|
usb_kill_anchored_urbs(&data->rx_anchor);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int bpa10x_close(struct hci_dev *hdev)
|
|
{
|
|
struct bpa10x_data *data = hci_get_drvdata(hdev);
|
|
|
|
BT_DBG("%s", hdev->name);
|
|
|
|
usb_kill_anchored_urbs(&data->rx_anchor);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bpa10x_flush(struct hci_dev *hdev)
|
|
{
|
|
struct bpa10x_data *data = hci_get_drvdata(hdev);
|
|
|
|
BT_DBG("%s", hdev->name);
|
|
|
|
usb_kill_anchored_urbs(&data->tx_anchor);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bpa10x_setup(struct hci_dev *hdev)
|
|
{
|
|
const u8 req[] = { 0x07 };
|
|
struct sk_buff *skb;
|
|
|
|
BT_DBG("%s", hdev->name);
|
|
|
|
/* Read revision string */
|
|
skb = __hci_cmd_sync(hdev, 0xfc0e, sizeof(req), req, HCI_INIT_TIMEOUT);
|
|
if (IS_ERR(skb))
|
|
return PTR_ERR(skb);
|
|
|
|
BT_INFO("%s: %s", hdev->name, (char *)(skb->data + 1));
|
|
|
|
kfree_skb(skb);
|
|
return 0;
|
|
}
|
|
|
|
static int bpa10x_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
|
|
{
|
|
struct bpa10x_data *data = hci_get_drvdata(hdev);
|
|
struct usb_ctrlrequest *dr;
|
|
struct urb *urb;
|
|
unsigned int pipe;
|
|
int err;
|
|
|
|
BT_DBG("%s", hdev->name);
|
|
|
|
skb->dev = (void *) hdev;
|
|
|
|
urb = usb_alloc_urb(0, GFP_ATOMIC);
|
|
if (!urb)
|
|
return -ENOMEM;
|
|
|
|
/* Prepend skb with frame type */
|
|
*skb_push(skb, 1) = bt_cb(skb)->pkt_type;
|
|
|
|
switch (bt_cb(skb)->pkt_type) {
|
|
case HCI_COMMAND_PKT:
|
|
dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
|
|
if (!dr) {
|
|
usb_free_urb(urb);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
dr->bRequestType = USB_TYPE_VENDOR;
|
|
dr->bRequest = 0;
|
|
dr->wIndex = 0;
|
|
dr->wValue = 0;
|
|
dr->wLength = __cpu_to_le16(skb->len);
|
|
|
|
pipe = usb_sndctrlpipe(data->udev, 0x00);
|
|
|
|
usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
|
|
skb->data, skb->len, bpa10x_tx_complete, skb);
|
|
|
|
hdev->stat.cmd_tx++;
|
|
break;
|
|
|
|
case HCI_ACLDATA_PKT:
|
|
pipe = usb_sndbulkpipe(data->udev, 0x02);
|
|
|
|
usb_fill_bulk_urb(urb, data->udev, pipe,
|
|
skb->data, skb->len, bpa10x_tx_complete, skb);
|
|
|
|
hdev->stat.acl_tx++;
|
|
break;
|
|
|
|
case HCI_SCODATA_PKT:
|
|
pipe = usb_sndbulkpipe(data->udev, 0x02);
|
|
|
|
usb_fill_bulk_urb(urb, data->udev, pipe,
|
|
skb->data, skb->len, bpa10x_tx_complete, skb);
|
|
|
|
hdev->stat.sco_tx++;
|
|
break;
|
|
|
|
default:
|
|
usb_free_urb(urb);
|
|
return -EILSEQ;
|
|
}
|
|
|
|
usb_anchor_urb(urb, &data->tx_anchor);
|
|
|
|
err = usb_submit_urb(urb, GFP_ATOMIC);
|
|
if (err < 0) {
|
|
BT_ERR("%s urb %p submission failed", hdev->name, urb);
|
|
kfree(urb->setup_packet);
|
|
usb_unanchor_urb(urb);
|
|
}
|
|
|
|
usb_free_urb(urb);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bpa10x_set_diag(struct hci_dev *hdev, bool enable)
|
|
{
|
|
const u8 req[] = { 0x00, enable };
|
|
struct sk_buff *skb;
|
|
|
|
BT_DBG("%s", hdev->name);
|
|
|
|
if (!test_bit(HCI_RUNNING, &hdev->flags))
|
|
return -ENETDOWN;
|
|
|
|
/* Enable sniffer operation */
|
|
skb = __hci_cmd_sync(hdev, 0xfc0e, sizeof(req), req, HCI_INIT_TIMEOUT);
|
|
if (IS_ERR(skb))
|
|
return PTR_ERR(skb);
|
|
|
|
kfree_skb(skb);
|
|
return 0;
|
|
}
|
|
|
|
static int bpa10x_probe(struct usb_interface *intf, const struct usb_device_id *id)
|
|
{
|
|
struct bpa10x_data *data;
|
|
struct hci_dev *hdev;
|
|
int err;
|
|
|
|
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)
|
|
return -ENOMEM;
|
|
|
|
data->udev = interface_to_usbdev(intf);
|
|
|
|
init_usb_anchor(&data->tx_anchor);
|
|
init_usb_anchor(&data->rx_anchor);
|
|
|
|
hdev = hci_alloc_dev();
|
|
if (!hdev)
|
|
return -ENOMEM;
|
|
|
|
hdev->bus = HCI_USB;
|
|
hci_set_drvdata(hdev, data);
|
|
|
|
data->hdev = hdev;
|
|
|
|
SET_HCIDEV_DEV(hdev, &intf->dev);
|
|
|
|
hdev->open = bpa10x_open;
|
|
hdev->close = bpa10x_close;
|
|
hdev->flush = bpa10x_flush;
|
|
hdev->setup = bpa10x_setup;
|
|
hdev->send = bpa10x_send_frame;
|
|
hdev->set_diag = bpa10x_set_diag;
|
|
|
|
set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
|
|
|
|
err = hci_register_dev(hdev);
|
|
if (err < 0) {
|
|
hci_free_dev(hdev);
|
|
return err;
|
|
}
|
|
|
|
usb_set_intfdata(intf, data);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void bpa10x_disconnect(struct usb_interface *intf)
|
|
{
|
|
struct bpa10x_data *data = usb_get_intfdata(intf);
|
|
|
|
BT_DBG("intf %p", intf);
|
|
|
|
if (!data)
|
|
return;
|
|
|
|
usb_set_intfdata(intf, NULL);
|
|
|
|
hci_unregister_dev(data->hdev);
|
|
|
|
hci_free_dev(data->hdev);
|
|
kfree_skb(data->rx_skb[0]);
|
|
kfree_skb(data->rx_skb[1]);
|
|
}
|
|
|
|
static struct usb_driver bpa10x_driver = {
|
|
.name = "bpa10x",
|
|
.probe = bpa10x_probe,
|
|
.disconnect = bpa10x_disconnect,
|
|
.id_table = bpa10x_table,
|
|
.disable_hub_initiated_lpm = 1,
|
|
};
|
|
|
|
module_usb_driver(bpa10x_driver);
|
|
|
|
MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
|
|
MODULE_DESCRIPTION("Digianswer Bluetooth USB driver ver " VERSION);
|
|
MODULE_VERSION(VERSION);
|
|
MODULE_LICENSE("GPL");
|