[mirror_ubuntu-zesty-kernel.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>

#ifndef CONFIG_BT_HCIBPA10X_DEBUG
#undef  BT_DBG
#define BT_DBG(D...)
#endif

#define VERSION "0.9"

static int ignore = 0;

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;
} __attribute__ ((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);
		kfree(buf);
	}

	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);
		kfree(buf);
	}

	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(data->rx_skb[0]);
	kfree(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 (ignore)
		return -ENODEV;

	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->type = 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;

	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_param(ignore, bool, 0644);
MODULE_PARM_DESC(ignore, "Ignore devices from the matching table");

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
	38	#ifndef CONFIG_BT_HCIBPA10X_DEBUG
	39	#undef BT_DBG
	40	#define BT_DBG(D...)
	41	#endif
	42
e24b21ec	43	#define VERSION "0.9"
1da177e4 LT	44
	45	static int ignore = 0;
	46
	47	static struct usb_device_id bpa10x_table[] = {
	48	/* Tektronix BPA 100/105 (Digianswer) */
	49	{ USB_DEVICE(0x08fd, 0x0002) },
	50
	51	{ } /* Terminating entry */
	52	};
	53
	54	MODULE_DEVICE_TABLE(usb, bpa10x_table);
	55
1da177e4	56	struct bpa10x_data {
e24b21ec MH	57	struct hci_dev *hdev;
e24b21ec MH	58	struct usb_device *udev;
1da177e4	59
e24b21ec MH	60	struct usb_anchor tx_anchor;
e24b21ec MH	61	struct usb_anchor rx_anchor;
1da177e4	62
e24b21ec	63	struct sk_buff *rx_skb[2];
1da177e4 LT	64	};
1da177e4 LT	65
e24b21ec	66	#define HCI_VENDOR_HDR_SIZE 5
1da177e4 LT	67
1da177e4 LT	68	struct hci_vendor_hdr {
e24b21ec MH	69	__u8 type;
	70	__le16 snum;
	71	__le16 dlen;
1da177e4 LT	72	} __attribute__ ((packed));
1da177e4 LT	73
e24b21ec	74	static int bpa10x_recv(struct hci_dev hdev, int queue, void buf, int count)
1da177e4	75	{
e24b21ec MH	76	struct bpa10x_data *data = hdev->driver_data;
	77
	78	BT_DBG("%s queue %d buffer %p count %d", hdev->name,
	79	queue, buf, count);
	80
	81	if (queue < 0 \|\| queue > 1)
	82	return -EILSEQ;
	83
	84	hdev->stat.byte_rx += count;
1da177e4 LT	85
1da177e4 LT	86	while (count) {
e24b21ec MH	87	struct sk_buff *skb = data->rx_skb[queue];
	88	struct { __u8 type; int expect; } *scb;
	89	int type, len = 0;
1da177e4	90
e24b21ec MH	91	if (!skb) {
	92	/* Start of the frame */
	93
	94	type = ((__u8 ) buf);
	95	count--; buf++;
	96
	97	switch (type) {
	98	case HCI_EVENT_PKT:
	99	if (count >= HCI_EVENT_HDR_SIZE) {
	100	struct hci_event_hdr *h = buf;
	101	len = HCI_EVENT_HDR_SIZE + h->plen;
	102	} else
	103	return -EILSEQ;
	104	break;
	105
	106	case HCI_ACLDATA_PKT:
	107	if (count >= HCI_ACL_HDR_SIZE) {
	108	struct hci_acl_hdr *h = buf;
	109	len = HCI_ACL_HDR_SIZE +
	110	__le16_to_cpu(h->dlen);
	111	} else
	112	return -EILSEQ;
	113	break;
	114
	115	case HCI_SCODATA_PKT:
	116	if (count >= HCI_SCO_HDR_SIZE) {
	117	struct hci_sco_hdr *h = buf;
	118	len = HCI_SCO_HDR_SIZE + h->dlen;
	119	} else
	120	return -EILSEQ;
	121	break;
	122
	123	case HCI_VENDOR_PKT:
	124	if (count >= HCI_VENDOR_HDR_SIZE) {
	125	struct hci_vendor_hdr *h = buf;
	126	len = HCI_VENDOR_HDR_SIZE +
	127	__le16_to_cpu(h->dlen);
	128	} else
	129	return -EILSEQ;
	130	break;
1da177e4	131	}
1da177e4	132
1da177e4	133	skb = bt_skb_alloc(len, GFP_ATOMIC);
e24b21ec MH	134	if (!skb) {
	135	BT_ERR("%s no memory for packet", hdev->name);
	136	return -ENOMEM;
1da177e4	137	}
1da177e4	138
e24b21ec	139	skb->dev = (void *) hdev;
1da177e4	140
e24b21ec	141	data->rx_skb[queue] = skb;
1da177e4	142
e24b21ec MH	143	scb = (void *) skb->cb;
	144	scb->type = type;
	145	scb->expect = len;
	146	} else {
	147	/* Continuation */
1da177e4	148
e24b21ec MH	149	scb = (void *) skb->cb;
e24b21ec MH	150	len = scb->expect;
1da177e4 LT	151	}
1da177e4 LT	152
e24b21ec	153	len = min(len, count);
1da177e4	154
e24b21ec	155	memcpy(skb_put(skb, len), buf, len);
1da177e4	156
e24b21ec	157	scb->expect -= len;
1da177e4	158
e24b21ec MH	159	if (scb->expect == 0) {
e24b21ec MH	160	/* Complete frame */
1da177e4	161
e24b21ec	162	data->rx_skb[queue] = NULL;
1da177e4	163
e24b21ec	164	bt_cb(skb)->pkt_type = scb->type;
1da177e4	165	hci_recv_frame(skb);
1da177e4	166	}
e24b21ec MH	167
e24b21ec MH	168	count -= len; buf += len;
1da177e4 LT	169	}
	170
	171	return 0;
	172	}
	173
e24b21ec	174	static void bpa10x_tx_complete(struct urb *urb)
1da177e4	175	{
e24b21ec MH	176	struct sk_buff *skb = urb->context;
e24b21ec MH	177	struct hci_dev hdev = (struct hci_dev ) skb->dev;
1da177e4	178
e24b21ec MH	179	BT_DBG("%s urb %p status %d count %d", hdev->name,
e24b21ec MH	180	urb, urb->status, urb->actual_length);
1da177e4	181
e24b21ec MH	182	if (!test_bit(HCI_RUNNING, &hdev->flags))
	183	goto done;
	184
	185	if (!urb->status)
	186	hdev->stat.byte_tx += urb->transfer_buffer_length;
1da177e4	187	else
e24b21ec	188	hdev->stat.err_tx++;
1da177e4	189
e24b21ec MH	190	done:
e24b21ec MH	191	kfree(urb->setup_packet);
1da177e4	192
e24b21ec MH	193	kfree_skb(skb);
	194	}
	195
	196	static void bpa10x_rx_complete(struct urb *urb)
	197	{
	198	struct hci_dev *hdev = urb->context;
	199	struct bpa10x_data *data = hdev->driver_data;
	200	int err;
1da177e4	201
e24b21ec MH	202	BT_DBG("%s urb %p status %d count %d", hdev->name,
e24b21ec MH	203	urb, urb->status, urb->actual_length);
1da177e4	204
e24b21ec MH	205	if (!test_bit(HCI_RUNNING, &hdev->flags))
e24b21ec MH	206	return;
1da177e4	207
e24b21ec MH	208	if (urb->status == 0) {
	209	if (bpa10x_recv(hdev, usb_pipebulk(urb->pipe),
	210	urb->transfer_buffer,
	211	urb->actual_length) < 0) {
	212	BT_ERR("%s corrupted event packet", hdev->name);
	213	hdev->stat.err_rx++;
	214	}
1da177e4 LT	215	}
1da177e4 LT	216
e24b21ec MH	217	usb_anchor_urb(urb, &data->rx_anchor);
	218
	219	err = usb_submit_urb(urb, GFP_ATOMIC);
	220	if (err < 0) {
	221	BT_ERR("%s urb %p failed to resubmit (%d)",
	222	hdev->name, urb, -err);
	223	usb_unanchor_urb(urb);
1da177e4 LT	224	}
	225	}
	226
e24b21ec	227	static inline int bpa10x_submit_intr_urb(struct hci_dev *hdev)
1da177e4	228	{
e24b21ec MH	229	struct bpa10x_data *data = hdev->driver_data;
	230	struct urb *urb;
	231	unsigned char *buf;
	232	unsigned int pipe;
	233	int err, size = 16;
1da177e4	234
e24b21ec	235	BT_DBG("%s", hdev->name);
1da177e4	236
e24b21ec MH	237	urb = usb_alloc_urb(0, GFP_KERNEL);
	238	if (!urb)
	239	return -ENOMEM;
1da177e4	240
e24b21ec MH	241	buf = kmalloc(size, GFP_KERNEL);
	242	if (!buf) {
	243	usb_free_urb(urb);
	244	return -ENOMEM;
	245	}
1da177e4	246
e24b21ec	247	pipe = usb_rcvintpipe(data->udev, 0x81);
1da177e4	248
e24b21ec MH	249	usb_fill_int_urb(urb, data->udev, pipe, buf, size,
e24b21ec MH	250	bpa10x_rx_complete, hdev, 1);
1da177e4	251
e24b21ec	252	urb->transfer_flags \|= URB_FREE_BUFFER;
1da177e4	253
e24b21ec	254	usb_anchor_urb(urb, &data->rx_anchor);
1da177e4	255
e24b21ec MH	256	err = usb_submit_urb(urb, GFP_KERNEL);
	257	if (err < 0) {
	258	BT_ERR("%s urb %p submission failed (%d)",
	259	hdev->name, urb, -err);
	260	usb_unanchor_urb(urb);
	261	kfree(buf);
1da177e4 LT	262	}
1da177e4 LT	263
e24b21ec	264	usb_free_urb(urb);
1da177e4	265
e24b21ec	266	return err;
1da177e4 LT	267	}
1da177e4 LT	268
e24b21ec	269	static inline int bpa10x_submit_bulk_urb(struct hci_dev *hdev)
1da177e4	270	{
e24b21ec	271	struct bpa10x_data *data = hdev->driver_data;
1da177e4	272	struct urb *urb;
1da177e4	273	unsigned char *buf;
e24b21ec MH	274	unsigned int pipe;
e24b21ec MH	275	int err, size = 64;
1da177e4	276
e24b21ec	277	BT_DBG("%s", hdev->name);
1da177e4	278
e24b21ec	279	urb = usb_alloc_urb(0, GFP_KERNEL);
1da177e4	280	if (!urb)
e24b21ec	281	return -ENOMEM;
1da177e4	282
e24b21ec	283	buf = kmalloc(size, GFP_KERNEL);
1da177e4 LT	284	if (!buf) {
1da177e4 LT	285	usb_free_urb(urb);
e24b21ec	286	return -ENOMEM;
1da177e4 LT	287	}
1da177e4 LT	288
e24b21ec	289	pipe = usb_rcvbulkpipe(data->udev, 0x82);
1da177e4	290
e24b21ec MH	291	usb_fill_bulk_urb(urb, data->udev, pipe,
e24b21ec MH	292	buf, size, bpa10x_rx_complete, hdev);
1da177e4	293
e24b21ec	294	urb->transfer_flags \|= URB_FREE_BUFFER;
1da177e4	295
e24b21ec	296	usb_anchor_urb(urb, &data->rx_anchor);
1da177e4	297
e24b21ec MH	298	err = usb_submit_urb(urb, GFP_KERNEL);
	299	if (err < 0) {
	300	BT_ERR("%s urb %p submission failed (%d)",
	301	hdev->name, urb, -err);
	302	usb_unanchor_urb(urb);
1da177e4	303	kfree(buf);
1da177e4 LT	304	}
1da177e4 LT	305
1da177e4	306	usb_free_urb(urb);
e24b21ec MH	307
e24b21ec MH	308	return err;
1da177e4 LT	309	}
	310
	311	static int bpa10x_open(struct hci_dev *hdev)
	312	{
	313	struct bpa10x_data *data = hdev->driver_data;
1da177e4 LT	314	int err;
1da177e4 LT	315
e24b21ec	316	BT_DBG("%s", hdev->name);
1da177e4 LT	317
	318	if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
	319	return 0;
	320
e24b21ec MH	321	err = bpa10x_submit_intr_urb(hdev);
	322	if (err < 0)
	323	goto error;
1da177e4	324
e24b21ec MH	325	err = bpa10x_submit_bulk_urb(hdev);
	326	if (err < 0)
	327	goto error;
1da177e4	328
e24b21ec	329	return 0;
1da177e4	330
e24b21ec MH	331	error:
e24b21ec MH	332	usb_kill_anchored_urbs(&data->rx_anchor);
1da177e4	333
e24b21ec	334	clear_bit(HCI_RUNNING, &hdev->flags);
1da177e4 LT	335
	336	return err;
	337	}
	338
	339	static int bpa10x_close(struct hci_dev *hdev)
	340	{
	341	struct bpa10x_data *data = hdev->driver_data;
1da177e4	342
e24b21ec	343	BT_DBG("%s", hdev->name);
1da177e4 LT	344
	345	if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
	346	return 0;
	347
e24b21ec	348	usb_kill_anchored_urbs(&data->rx_anchor);
1da177e4 LT	349
	350	return 0;
	351	}
	352
	353	static int bpa10x_flush(struct hci_dev *hdev)
	354	{
	355	struct bpa10x_data *data = hdev->driver_data;
	356
e24b21ec	357	BT_DBG("%s", hdev->name);
1da177e4	358
e24b21ec	359	usb_kill_anchored_urbs(&data->tx_anchor);
1da177e4 LT	360
	361	return 0;
	362	}
	363
	364	static int bpa10x_send_frame(struct sk_buff *skb)
	365	{
	366	struct hci_dev hdev = (struct hci_dev ) skb->dev;
e24b21ec MH	367	struct bpa10x_data *data = hdev->driver_data;
	368	struct usb_ctrlrequest *dr;
	369	struct urb *urb;
	370	unsigned int pipe;
	371	int err;
1da177e4	372
e24b21ec	373	BT_DBG("%s", hdev->name);
1da177e4 LT	374
	375	if (!test_bit(HCI_RUNNING, &hdev->flags))
	376	return -EBUSY;
	377
e24b21ec MH	378	urb = usb_alloc_urb(0, GFP_ATOMIC);
	379	if (!urb)
	380	return -ENOMEM;
1da177e4 LT	381
1da177e4 LT	382	/* Prepend skb with frame type */
e24b21ec	383	*skb_push(skb, 1) = bt_cb(skb)->pkt_type;
1da177e4	384
0d48d939	385	switch (bt_cb(skb)->pkt_type) {
1da177e4	386	case HCI_COMMAND_PKT:
e24b21ec MH	387	dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
	388	if (!dr) {
	389	usb_free_urb(urb);
	390	return -ENOMEM;
	391	}
	392
	393	dr->bRequestType = USB_TYPE_VENDOR;
	394	dr->bRequest = 0;
	395	dr->wIndex = 0;
	396	dr->wValue = 0;
	397	dr->wLength = __cpu_to_le16(skb->len);
	398
	399	pipe = usb_sndctrlpipe(data->udev, 0x00);
	400
	401	usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
	402	skb->data, skb->len, bpa10x_tx_complete, skb);
	403
1da177e4	404	hdev->stat.cmd_tx++;
1da177e4 LT	405	break;
	406
	407	case HCI_ACLDATA_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.acl_tx++;
1da177e4 LT	414	break;
	415
	416	case HCI_SCODATA_PKT:
e24b21ec MH	417	pipe = usb_sndbulkpipe(data->udev, 0x02);
	418
	419	usb_fill_bulk_urb(urb, data->udev, pipe,
	420	skb->data, skb->len, bpa10x_tx_complete, skb);
	421
1da177e4	422	hdev->stat.sco_tx++;
1da177e4	423	break;
1da177e4	424
e24b21ec	425	default:
cb7cd429	426	usb_free_urb(urb);
e24b21ec MH	427	return -EILSEQ;
	428	}
	429
	430	usb_anchor_urb(urb, &data->tx_anchor);
1da177e4	431
e24b21ec MH	432	err = usb_submit_urb(urb, GFP_ATOMIC);
	433	if (err < 0) {
	434	BT_ERR("%s urb %p submission failed", hdev->name, urb);
	435	kfree(urb->setup_packet);
	436	usb_unanchor_urb(urb);
	437	}
1da177e4	438
e24b21ec	439	usb_free_urb(urb);
1da177e4 LT	440
	441	return 0;
	442	}
	443
	444	static void bpa10x_destruct(struct hci_dev *hdev)
	445	{
	446	struct bpa10x_data *data = hdev->driver_data;
	447
e24b21ec	448	BT_DBG("%s", hdev->name);
1da177e4	449
e24b21ec MH	450	kfree(data->rx_skb[0]);
e24b21ec MH	451	kfree(data->rx_skb[1]);
1da177e4 LT	452	kfree(data);
	453	}
	454
	455	static int bpa10x_probe(struct usb_interface intf, const struct usb_device_id id)
	456	{
1da177e4	457	struct bpa10x_data *data;
e24b21ec	458	struct hci_dev *hdev;
1da177e4 LT	459	int err;
	460
	461	BT_DBG("intf %p id %p", intf, id);
	462
	463	if (ignore)
245dc3d1 MH	464	return -ENODEV;
245dc3d1 MH	465
e24b21ec	466	if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1da177e4 LT	467	return -ENODEV;
1da177e4 LT	468
089b1dbb	469	data = kzalloc(sizeof(*data), GFP_KERNEL);
e24b21ec	470	if (!data)
1da177e4	471	return -ENOMEM;
1da177e4	472
e24b21ec	473	data->udev = interface_to_usbdev(intf);
1da177e4	474
e24b21ec MH	475	init_usb_anchor(&data->tx_anchor);
e24b21ec MH	476	init_usb_anchor(&data->rx_anchor);
1da177e4 LT	477
	478	hdev = hci_alloc_dev();
	479	if (!hdev) {
1da177e4 LT	480	kfree(data);
	481	return -ENOMEM;
	482	}
	483
1da177e4 LT	484	hdev->type = HCI_USB;
1da177e4 LT	485	hdev->driver_data = data;
e24b21ec MH	486
	487	data->hdev = hdev;
	488
1da177e4 LT	489	SET_HCIDEV_DEV(hdev, &intf->dev);
1da177e4 LT	490
e24b21ec MH	491	hdev->open = bpa10x_open;
	492	hdev->close = bpa10x_close;
	493	hdev->flush = bpa10x_flush;
	494	hdev->send = bpa10x_send_frame;
	495	hdev->destruct = bpa10x_destruct;
1da177e4 LT	496
	497	hdev->owner = THIS_MODULE;
	498
	499	err = hci_register_dev(hdev);
	500	if (err < 0) {
1da177e4	501	hci_free_dev(hdev);
e24b21ec	502	kfree(data);
1da177e4 LT	503	return err;
	504	}
	505
	506	usb_set_intfdata(intf, data);
	507
	508	return 0;
	509	}
	510
	511	static void bpa10x_disconnect(struct usb_interface *intf)
	512	{
	513	struct bpa10x_data *data = usb_get_intfdata(intf);
1da177e4 LT	514
	515	BT_DBG("intf %p", intf);
	516
e24b21ec	517	if (!data)
1da177e4 LT	518	return;
	519
	520	usb_set_intfdata(intf, NULL);
	521
e24b21ec	522	hci_unregister_dev(data->hdev);
1da177e4	523
e24b21ec	524	hci_free_dev(data->hdev);
1da177e4 LT	525	}
	526
	527	static struct usb_driver bpa10x_driver = {
1da177e4 LT	528	.name = "bpa10x",
	529	.probe = bpa10x_probe,
	530	.disconnect = bpa10x_disconnect,
	531	.id_table = bpa10x_table,
	532	};
	533
	534	static int __init bpa10x_init(void)
	535	{
1da177e4 LT	536	BT_INFO("Digianswer Bluetooth USB driver ver %s", VERSION);
1da177e4 LT	537
e24b21ec	538	return usb_register(&bpa10x_driver);
1da177e4 LT	539	}
	540
	541	static void __exit bpa10x_exit(void)
	542	{
	543	usb_deregister(&bpa10x_driver);
	544	}
	545
	546	module_init(bpa10x_init);
	547	module_exit(bpa10x_exit);
	548
	549	module_param(ignore, bool, 0644);
	550	MODULE_PARM_DESC(ignore, "Ignore devices from the matching table");
	551
	552	MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
	553	MODULE_DESCRIPTION("Digianswer Bluetooth USB driver ver " VERSION);
	554	MODULE_VERSION(VERSION);
	555	MODULE_LICENSE("GPL");