[net-next-2.6.git] / drivers / bluetooth / bpa10x.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>

#define VERSION "0.10"

static 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];
};

#define HCI_VENDOR_HDR_SIZE 5

struct hci_vendor_hdr {
	__u8    type;
	__le16  snum;
	__le16  dlen;
} __packed;

static int bpa10x_recv(struct hci_dev *hdev, int queue, void *buf, int count)
{
	struct bpa10x_data *data = hdev->driver_data;

	BT_DBG("%s queue %d buffer %p count %d", hdev->name,
							queue, buf, count);

	if (queue < 0 || queue > 1)
		return -EILSEQ;

	hdev->stat.byte_rx += count;

	while (count) {
		struct sk_buff *skb = data->rx_skb[queue];
		struct { __u8 type; int expect; } *scb;
		int type, len = 0;

		if (!skb) {
			/* Start of the frame */

			type = *((__u8 *) buf);
			count--; buf++;

			switch (type) {
			case HCI_EVENT_PKT:
				if (count >= HCI_EVENT_HDR_SIZE) {
					struct hci_event_hdr *h = buf;
					len = HCI_EVENT_HDR_SIZE + h->plen;
				} else
					return -EILSEQ;
				break;

			case HCI_ACLDATA_PKT:
				if (count >= HCI_ACL_HDR_SIZE) {
					struct hci_acl_hdr *h = buf;
					len = HCI_ACL_HDR_SIZE +
							__le16_to_cpu(h->dlen);
				} else
					return -EILSEQ;
				break;

			case HCI_SCODATA_PKT:
				if (count >= HCI_SCO_HDR_SIZE) {
					struct hci_sco_hdr *h = buf;
					len = HCI_SCO_HDR_SIZE + h->dlen;
				} else
					return -EILSEQ;
				break;

			case HCI_VENDOR_PKT:
				if (count >= HCI_VENDOR_HDR_SIZE) {
					struct hci_vendor_hdr *h = buf;
					len = HCI_VENDOR_HDR_SIZE +
							__le16_to_cpu(h->dlen);
				} else
					return -EILSEQ;
				break;
			}

			skb = bt_skb_alloc(len, GFP_ATOMIC);
			if (!skb) {
				BT_ERR("%s no memory for packet", hdev->name);
				return -ENOMEM;
			}

			skb->dev = (void *) hdev;

			data->rx_skb[queue] = skb;

			scb = (void *) skb->cb;
			scb->type = type;
			scb->expect = len;
		} else {
			/* Continuation */

			scb = (void *) skb->cb;
			len = scb->expect;
		}

		len = min(len, count);

		memcpy(skb_put(skb, len), buf, len);

		scb->expect -= len;

		if (scb->expect == 0) {
			/* Complete frame */

			data->rx_skb[queue] = NULL;

			bt_cb(skb)->pkt_type = scb->type;
			hci_recv_frame(skb);
		}

		count -= len; buf += len;
	}

	return 0;
}

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);
}

static void bpa10x_rx_complete(struct urb *urb)
{
	struct hci_dev *hdev = urb->context;
	struct bpa10x_data *data = hdev->driver_data;
	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) {
		if (bpa10x_recv(hdev, usb_pipebulk(urb->pipe),
						urb->transfer_buffer,
						urb->actual_length) < 0) {
			BT_ERR("%s corrupted event packet", hdev->name);
			hdev->stat.err_rx++;
		}
	}

	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 = hdev->driver_data;
	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 = hdev->driver_data;
	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 = hdev->driver_data;
	int err;

	BT_DBG("%s", hdev->name);

	if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
		return 0;

	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);

	clear_bit(HCI_RUNNING, &hdev->flags);

	return err;
}

static int bpa10x_close(struct hci_dev *hdev)
{
	struct bpa10x_data *data = hdev->driver_data;

	BT_DBG("%s", hdev->name);

	if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
		return 0;

	usb_kill_anchored_urbs(&data->rx_anchor);

	return 0;
}

static int bpa10x_flush(struct hci_dev *hdev)
{
	struct bpa10x_data *data = hdev->driver_data;

	BT_DBG("%s", hdev->name);

	usb_kill_anchored_urbs(&data->tx_anchor);

	return 0;
}

static int bpa10x_send_frame(struct sk_buff *skb)
{
	struct hci_dev *hdev = (struct hci_dev *) skb->dev;
	struct bpa10x_data *data = hdev->driver_data;
	struct usb_ctrlrequest *dr;
	struct urb *urb;
	unsigned int pipe;
	int err;

	BT_DBG("%s", hdev->name);

	if (!test_bit(HCI_RUNNING, &hdev->flags))
		return -EBUSY;

	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 void bpa10x_destruct(struct hci_dev *hdev)
{
	struct bpa10x_data *data = hdev->driver_data;

	BT_DBG("%s", hdev->name);

	kfree_skb(data->rx_skb[0]);
	kfree_skb(data->rx_skb[1]);
	kfree(data);
}

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 = kzalloc(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) {
		kfree(data);
		return -ENOMEM;
	}

	hdev->bus = HCI_USB;
	hdev->driver_data = data;

	data->hdev = hdev;

	SET_HCIDEV_DEV(hdev, &intf->dev);

	hdev->open     = bpa10x_open;
	hdev->close    = bpa10x_close;
	hdev->flush    = bpa10x_flush;
	hdev->send     = bpa10x_send_frame;
	hdev->destruct = bpa10x_destruct;

	hdev->owner = THIS_MODULE;

	set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);

	err = hci_register_dev(hdev);
	if (err < 0) {
		hci_free_dev(hdev);
		kfree(data);
		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);
}

static struct usb_driver bpa10x_driver = {
	.name		= "bpa10x",
	.probe		= bpa10x_probe,
	.disconnect	= bpa10x_disconnect,
	.id_table	= bpa10x_table,
};

static int __init bpa10x_init(void)
{
	BT_INFO("Digianswer Bluetooth USB driver ver %s", VERSION);

	return usb_register(&bpa10x_driver);
}

static void __exit bpa10x_exit(void)
{
	usb_deregister(&bpa10x_driver);
}

module_init(bpa10x_init);
module_exit(bpa10x_exit);

MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
MODULE_DESCRIPTION("Digianswer Bluetooth USB driver ver " VERSION);
MODULE_VERSION(VERSION);
MODULE_LICENSE("GPL");
Commit	Line	Data
1da177e4 LT	1	/*
	2	*
	3	* Digianswer Bluetooth USB driver
	4	*
e24b21ec	5	* Copyright (C) 2004-2007 Marcel Holtmann <marcel@holtmann.org>
1da177e4 LT	6	*
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	21	*
	22	*/
	23
1da177e4	24	#include <linux/kernel.h>
e24b21ec	25	#include <linux/module.h>
1da177e4 LT	26	#include <linux/init.h>
	27	#include <linux/slab.h>
	28	#include <linux/types.h>
e24b21ec	29	#include <linux/sched.h>
1da177e4	30	#include <linux/errno.h>
e24b21ec	31	#include <linux/skbuff.h>
1da177e4 LT	32
	33	#include <linux/usb.h>
	34
	35	#include <net/bluetooth/bluetooth.h>
	36	#include <net/bluetooth/hci_core.h>
	37
943d56b0	38	#define VERSION "0.10"
1da177e4 LT	39
	40	static struct usb_device_id bpa10x_table[] = {
	41	/* Tektronix BPA 100/105 (Digianswer) */
	42	{ USB_DEVICE(0x08fd, 0x0002) },
	43
	44	{ } /* Terminating entry */
	45	};
	46
	47	MODULE_DEVICE_TABLE(usb, bpa10x_table);
	48
1da177e4	49	struct bpa10x_data {
e24b21ec MH	50	struct hci_dev *hdev;
e24b21ec MH	51	struct usb_device *udev;
1da177e4	52
e24b21ec MH	53	struct usb_anchor tx_anchor;
e24b21ec MH	54	struct usb_anchor rx_anchor;
1da177e4	55
e24b21ec	56	struct sk_buff *rx_skb[2];
1da177e4 LT	57	};
1da177e4 LT	58
e24b21ec	59	#define HCI_VENDOR_HDR_SIZE 5
1da177e4 LT	60
1da177e4 LT	61	struct hci_vendor_hdr {
e24b21ec MH	62	__u8 type;
	63	__le16 snum;
	64	__le16 dlen;
81ca405a	65	} __packed;
1da177e4	66
e24b21ec	67	static int bpa10x_recv(struct hci_dev hdev, int queue, void buf, int count)
1da177e4	68	{
e24b21ec MH	69	struct bpa10x_data *data = hdev->driver_data;
	70
	71	BT_DBG("%s queue %d buffer %p count %d", hdev->name,
	72	queue, buf, count);
	73
	74	if (queue < 0 \|\| queue > 1)
	75	return -EILSEQ;
	76
	77	hdev->stat.byte_rx += count;
1da177e4 LT	78
1da177e4 LT	79	while (count) {
e24b21ec MH	80	struct sk_buff *skb = data->rx_skb[queue];
	81	struct { __u8 type; int expect; } *scb;
	82	int type, len = 0;
1da177e4	83
e24b21ec MH	84	if (!skb) {
	85	/* Start of the frame */
	86
	87	type = ((__u8 ) buf);
	88	count--; buf++;
	89
	90	switch (type) {
	91	case HCI_EVENT_PKT:
	92	if (count >= HCI_EVENT_HDR_SIZE) {
	93	struct hci_event_hdr *h = buf;
	94	len = HCI_EVENT_HDR_SIZE + h->plen;
	95	} else
	96	return -EILSEQ;
	97	break;
	98
	99	case HCI_ACLDATA_PKT:
	100	if (count >= HCI_ACL_HDR_SIZE) {
	101	struct hci_acl_hdr *h = buf;
	102	len = HCI_ACL_HDR_SIZE +
	103	__le16_to_cpu(h->dlen);
	104	} else
	105	return -EILSEQ;
	106	break;
	107
	108	case HCI_SCODATA_PKT:
	109	if (count >= HCI_SCO_HDR_SIZE) {
	110	struct hci_sco_hdr *h = buf;
	111	len = HCI_SCO_HDR_SIZE + h->dlen;
	112	} else
	113	return -EILSEQ;
	114	break;
	115
	116	case HCI_VENDOR_PKT:
	117	if (count >= HCI_VENDOR_HDR_SIZE) {
	118	struct hci_vendor_hdr *h = buf;
	119	len = HCI_VENDOR_HDR_SIZE +
	120	__le16_to_cpu(h->dlen);
	121	} else
	122	return -EILSEQ;
	123	break;
1da177e4	124	}
1da177e4	125
1da177e4	126	skb = bt_skb_alloc(len, GFP_ATOMIC);
e24b21ec MH	127	if (!skb) {
	128	BT_ERR("%s no memory for packet", hdev->name);
	129	return -ENOMEM;
1da177e4	130	}
1da177e4	131
e24b21ec	132	skb->dev = (void *) hdev;
1da177e4	133
e24b21ec	134	data->rx_skb[queue] = skb;
1da177e4	135
e24b21ec MH	136	scb = (void *) skb->cb;
	137	scb->type = type;
	138	scb->expect = len;
	139	} else {
	140	/* Continuation */
1da177e4	141
e24b21ec MH	142	scb = (void *) skb->cb;
e24b21ec MH	143	len = scb->expect;
1da177e4 LT	144	}
1da177e4 LT	145
e24b21ec	146	len = min(len, count);
1da177e4	147
e24b21ec	148	memcpy(skb_put(skb, len), buf, len);
1da177e4	149
e24b21ec	150	scb->expect -= len;
1da177e4	151
e24b21ec MH	152	if (scb->expect == 0) {
e24b21ec MH	153	/* Complete frame */
1da177e4	154
e24b21ec	155	data->rx_skb[queue] = NULL;
1da177e4	156
e24b21ec	157	bt_cb(skb)->pkt_type = scb->type;
1da177e4	158	hci_recv_frame(skb);
1da177e4	159	}
e24b21ec MH	160
e24b21ec MH	161	count -= len; buf += len;
1da177e4 LT	162	}
	163
	164	return 0;
	165	}
	166
e24b21ec	167	static void bpa10x_tx_complete(struct urb *urb)
1da177e4	168	{
e24b21ec MH	169	struct sk_buff *skb = urb->context;
e24b21ec MH	170	struct hci_dev hdev = (struct hci_dev ) skb->dev;
1da177e4	171
e24b21ec MH	172	BT_DBG("%s urb %p status %d count %d", hdev->name,
e24b21ec MH	173	urb, urb->status, urb->actual_length);
1da177e4	174
e24b21ec MH	175	if (!test_bit(HCI_RUNNING, &hdev->flags))
	176	goto done;
	177
	178	if (!urb->status)
	179	hdev->stat.byte_tx += urb->transfer_buffer_length;
1da177e4	180	else
e24b21ec	181	hdev->stat.err_tx++;
1da177e4	182
e24b21ec MH	183	done:
e24b21ec MH	184	kfree(urb->setup_packet);
1da177e4	185
e24b21ec MH	186	kfree_skb(skb);
	187	}
	188
	189	static void bpa10x_rx_complete(struct urb *urb)
	190	{
	191	struct hci_dev *hdev = urb->context;
	192	struct bpa10x_data *data = hdev->driver_data;
	193	int err;
1da177e4	194
e24b21ec MH	195	BT_DBG("%s urb %p status %d count %d", hdev->name,
e24b21ec MH	196	urb, urb->status, urb->actual_length);
1da177e4	197
e24b21ec MH	198	if (!test_bit(HCI_RUNNING, &hdev->flags))
e24b21ec MH	199	return;
1da177e4	200
e24b21ec MH	201	if (urb->status == 0) {
	202	if (bpa10x_recv(hdev, usb_pipebulk(urb->pipe),
	203	urb->transfer_buffer,
	204	urb->actual_length) < 0) {
	205	BT_ERR("%s corrupted event packet", hdev->name);
	206	hdev->stat.err_rx++;
	207	}
1da177e4 LT	208	}
1da177e4 LT	209
e24b21ec MH	210	usb_anchor_urb(urb, &data->rx_anchor);
	211
	212	err = usb_submit_urb(urb, GFP_ATOMIC);
	213	if (err < 0) {
	214	BT_ERR("%s urb %p failed to resubmit (%d)",
	215	hdev->name, urb, -err);
	216	usb_unanchor_urb(urb);
1da177e4 LT	217	}
	218	}
	219
e24b21ec	220	static inline int bpa10x_submit_intr_urb(struct hci_dev *hdev)
1da177e4	221	{
e24b21ec MH	222	struct bpa10x_data *data = hdev->driver_data;
	223	struct urb *urb;
	224	unsigned char *buf;
	225	unsigned int pipe;
	226	int err, size = 16;
1da177e4	227
e24b21ec	228	BT_DBG("%s", hdev->name);
1da177e4	229
e24b21ec MH	230	urb = usb_alloc_urb(0, GFP_KERNEL);
	231	if (!urb)
	232	return -ENOMEM;
1da177e4	233
e24b21ec MH	234	buf = kmalloc(size, GFP_KERNEL);
	235	if (!buf) {
	236	usb_free_urb(urb);
	237	return -ENOMEM;
	238	}
1da177e4	239
e24b21ec	240	pipe = usb_rcvintpipe(data->udev, 0x81);
1da177e4	241
e24b21ec MH	242	usb_fill_int_urb(urb, data->udev, pipe, buf, size,
e24b21ec MH	243	bpa10x_rx_complete, hdev, 1);
1da177e4	244
e24b21ec	245	urb->transfer_flags \|= URB_FREE_BUFFER;
1da177e4	246
e24b21ec	247	usb_anchor_urb(urb, &data->rx_anchor);
1da177e4	248
e24b21ec MH	249	err = usb_submit_urb(urb, GFP_KERNEL);
	250	if (err < 0) {
	251	BT_ERR("%s urb %p submission failed (%d)",
	252	hdev->name, urb, -err);
	253	usb_unanchor_urb(urb);
1da177e4 LT	254	}
1da177e4 LT	255
e24b21ec	256	usb_free_urb(urb);
1da177e4	257
e24b21ec	258	return err;
1da177e4 LT	259	}
1da177e4 LT	260
e24b21ec	261	static inline int bpa10x_submit_bulk_urb(struct hci_dev *hdev)
1da177e4	262	{
e24b21ec	263	struct bpa10x_data *data = hdev->driver_data;
1da177e4	264	struct urb *urb;
1da177e4	265	unsigned char *buf;
e24b21ec MH	266	unsigned int pipe;
e24b21ec MH	267	int err, size = 64;
1da177e4	268
e24b21ec	269	BT_DBG("%s", hdev->name);
1da177e4	270
e24b21ec	271	urb = usb_alloc_urb(0, GFP_KERNEL);
1da177e4	272	if (!urb)
e24b21ec	273	return -ENOMEM;
1da177e4	274
e24b21ec	275	buf = kmalloc(size, GFP_KERNEL);
1da177e4 LT	276	if (!buf) {
1da177e4 LT	277	usb_free_urb(urb);
e24b21ec	278	return -ENOMEM;
1da177e4 LT	279	}
1da177e4 LT	280
e24b21ec	281	pipe = usb_rcvbulkpipe(data->udev, 0x82);
1da177e4	282
e24b21ec MH	283	usb_fill_bulk_urb(urb, data->udev, pipe,
e24b21ec MH	284	buf, size, bpa10x_rx_complete, hdev);
1da177e4	285
e24b21ec	286	urb->transfer_flags \|= URB_FREE_BUFFER;
1da177e4	287
e24b21ec	288	usb_anchor_urb(urb, &data->rx_anchor);
1da177e4	289
e24b21ec MH	290	err = usb_submit_urb(urb, GFP_KERNEL);
	291	if (err < 0) {
	292	BT_ERR("%s urb %p submission failed (%d)",
	293	hdev->name, urb, -err);
	294	usb_unanchor_urb(urb);
1da177e4 LT	295	}
1da177e4 LT	296
1da177e4	297	usb_free_urb(urb);
e24b21ec MH	298
e24b21ec MH	299	return err;
1da177e4 LT	300	}
	301
	302	static int bpa10x_open(struct hci_dev *hdev)
	303	{
	304	struct bpa10x_data *data = hdev->driver_data;
1da177e4 LT	305	int err;
1da177e4 LT	306
e24b21ec	307	BT_DBG("%s", hdev->name);
1da177e4 LT	308
	309	if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
	310	return 0;
	311
e24b21ec MH	312	err = bpa10x_submit_intr_urb(hdev);
	313	if (err < 0)
	314	goto error;
1da177e4	315
e24b21ec MH	316	err = bpa10x_submit_bulk_urb(hdev);
	317	if (err < 0)
	318	goto error;
1da177e4	319
e24b21ec	320	return 0;
1da177e4	321
e24b21ec MH	322	error:
e24b21ec MH	323	usb_kill_anchored_urbs(&data->rx_anchor);
1da177e4	324
e24b21ec	325	clear_bit(HCI_RUNNING, &hdev->flags);
1da177e4 LT	326
	327	return err;
	328	}
	329
	330	static int bpa10x_close(struct hci_dev *hdev)
	331	{
	332	struct bpa10x_data *data = hdev->driver_data;
1da177e4	333
e24b21ec	334	BT_DBG("%s", hdev->name);
1da177e4 LT	335
	336	if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
	337	return 0;
	338
e24b21ec	339	usb_kill_anchored_urbs(&data->rx_anchor);
1da177e4 LT	340
	341	return 0;
	342	}
	343
	344	static int bpa10x_flush(struct hci_dev *hdev)
	345	{
	346	struct bpa10x_data *data = hdev->driver_data;
	347
e24b21ec	348	BT_DBG("%s", hdev->name);
1da177e4	349
e24b21ec	350	usb_kill_anchored_urbs(&data->tx_anchor);
1da177e4 LT	351
	352	return 0;
	353	}
	354
	355	static int bpa10x_send_frame(struct sk_buff *skb)
	356	{
	357	struct hci_dev hdev = (struct hci_dev ) skb->dev;
e24b21ec MH	358	struct bpa10x_data *data = hdev->driver_data;
	359	struct usb_ctrlrequest *dr;
	360	struct urb *urb;
	361	unsigned int pipe;
	362	int err;
1da177e4	363
e24b21ec	364	BT_DBG("%s", hdev->name);
1da177e4 LT	365
	366	if (!test_bit(HCI_RUNNING, &hdev->flags))
	367	return -EBUSY;
	368
e24b21ec MH	369	urb = usb_alloc_urb(0, GFP_ATOMIC);
	370	if (!urb)
	371	return -ENOMEM;
1da177e4 LT	372
1da177e4 LT	373	/* Prepend skb with frame type */
e24b21ec	374	*skb_push(skb, 1) = bt_cb(skb)->pkt_type;
1da177e4	375
0d48d939	376	switch (bt_cb(skb)->pkt_type) {
1da177e4	377	case HCI_COMMAND_PKT:
e24b21ec MH	378	dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
	379	if (!dr) {
	380	usb_free_urb(urb);
	381	return -ENOMEM;
	382	}
	383
	384	dr->bRequestType = USB_TYPE_VENDOR;
	385	dr->bRequest = 0;
	386	dr->wIndex = 0;
	387	dr->wValue = 0;
	388	dr->wLength = __cpu_to_le16(skb->len);
	389
	390	pipe = usb_sndctrlpipe(data->udev, 0x00);
	391
	392	usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
	393	skb->data, skb->len, bpa10x_tx_complete, skb);
	394
1da177e4	395	hdev->stat.cmd_tx++;
1da177e4 LT	396	break;
	397
	398	case HCI_ACLDATA_PKT:
e24b21ec MH	399	pipe = usb_sndbulkpipe(data->udev, 0x02);
	400
	401	usb_fill_bulk_urb(urb, data->udev, pipe,
	402	skb->data, skb->len, bpa10x_tx_complete, skb);
	403
1da177e4	404	hdev->stat.acl_tx++;
1da177e4 LT	405	break;
	406
	407	case HCI_SCODATA_PKT:
e24b21ec MH	408	pipe = usb_sndbulkpipe(data->udev, 0x02);
	409
	410	usb_fill_bulk_urb(urb, data->udev, pipe,
	411	skb->data, skb->len, bpa10x_tx_complete, skb);
	412
1da177e4	413	hdev->stat.sco_tx++;
1da177e4	414	break;
1da177e4	415
e24b21ec	416	default:
cb7cd429	417	usb_free_urb(urb);
e24b21ec MH	418	return -EILSEQ;
	419	}
	420
	421	usb_anchor_urb(urb, &data->tx_anchor);
1da177e4	422
e24b21ec MH	423	err = usb_submit_urb(urb, GFP_ATOMIC);
	424	if (err < 0) {
	425	BT_ERR("%s urb %p submission failed", hdev->name, urb);
	426	kfree(urb->setup_packet);
	427	usb_unanchor_urb(urb);
	428	}
1da177e4	429
e24b21ec	430	usb_free_urb(urb);
1da177e4 LT	431
	432	return 0;
	433	}
	434
	435	static void bpa10x_destruct(struct hci_dev *hdev)
	436	{
	437	struct bpa10x_data *data = hdev->driver_data;
	438
e24b21ec	439	BT_DBG("%s", hdev->name);
1da177e4	440
cbafe312 IJ	441	kfree_skb(data->rx_skb[0]);
cbafe312 IJ	442	kfree_skb(data->rx_skb[1]);
1da177e4 LT	443	kfree(data);
	444	}
	445
	446	static int bpa10x_probe(struct usb_interface intf, const struct usb_device_id id)
	447	{
1da177e4	448	struct bpa10x_data *data;
e24b21ec	449	struct hci_dev *hdev;
1da177e4 LT	450	int err;
	451
	452	BT_DBG("intf %p id %p", intf, id);
	453
e24b21ec	454	if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1da177e4 LT	455	return -ENODEV;
1da177e4 LT	456
089b1dbb	457	data = kzalloc(sizeof(*data), GFP_KERNEL);
e24b21ec	458	if (!data)
1da177e4	459	return -ENOMEM;
1da177e4	460
e24b21ec	461	data->udev = interface_to_usbdev(intf);
1da177e4	462
e24b21ec MH	463	init_usb_anchor(&data->tx_anchor);
e24b21ec MH	464	init_usb_anchor(&data->rx_anchor);
1da177e4 LT	465
	466	hdev = hci_alloc_dev();
	467	if (!hdev) {
1da177e4 LT	468	kfree(data);
	469	return -ENOMEM;
	470	}
	471
c13854ce	472	hdev->bus = HCI_USB;
1da177e4	473	hdev->driver_data = data;
e24b21ec MH	474
	475	data->hdev = hdev;
	476
1da177e4 LT	477	SET_HCIDEV_DEV(hdev, &intf->dev);
1da177e4 LT	478
e24b21ec MH	479	hdev->open = bpa10x_open;
	480	hdev->close = bpa10x_close;
	481	hdev->flush = bpa10x_flush;
	482	hdev->send = bpa10x_send_frame;
	483	hdev->destruct = bpa10x_destruct;
1da177e4 LT	484
	485	hdev->owner = THIS_MODULE;
	486
7a9d4020 MH	487	set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
7a9d4020 MH	488
1da177e4 LT	489	err = hci_register_dev(hdev);
1da177e4 LT	490	if (err < 0) {
1da177e4	491	hci_free_dev(hdev);
e24b21ec	492	kfree(data);
1da177e4 LT	493	return err;
	494	}
	495
	496	usb_set_intfdata(intf, data);
	497
	498	return 0;
	499	}
	500
	501	static void bpa10x_disconnect(struct usb_interface *intf)
	502	{
	503	struct bpa10x_data *data = usb_get_intfdata(intf);
1da177e4 LT	504
	505	BT_DBG("intf %p", intf);
	506
e24b21ec	507	if (!data)
1da177e4 LT	508	return;
	509
	510	usb_set_intfdata(intf, NULL);
	511
e24b21ec	512	hci_unregister_dev(data->hdev);
1da177e4	513
e24b21ec	514	hci_free_dev(data->hdev);
1da177e4 LT	515	}
	516
	517	static struct usb_driver bpa10x_driver = {
1da177e4 LT	518	.name = "bpa10x",
	519	.probe = bpa10x_probe,
	520	.disconnect = bpa10x_disconnect,
	521	.id_table = bpa10x_table,
	522	};
	523
	524	static int __init bpa10x_init(void)
	525	{
1da177e4 LT	526	BT_INFO("Digianswer Bluetooth USB driver ver %s", VERSION);
1da177e4 LT	527
e24b21ec	528	return usb_register(&bpa10x_driver);
1da177e4 LT	529	}
	530
	531	static void __exit bpa10x_exit(void)
	532	{
	533	usb_deregister(&bpa10x_driver);
	534	}
	535
	536	module_init(bpa10x_init);
	537	module_exit(bpa10x_exit);
	538
1da177e4 LT	539	MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
	540	MODULE_DESCRIPTION("Digianswer Bluetooth USB driver ver " VERSION);
	541	MODULE_VERSION(VERSION);
	542	MODULE_LICENSE("GPL");