[net-next-2.6.git] / drivers / bluetooth / bcm203x.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/kernel.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/timer.h>

#include <linux/device.h>
#include <linux/firmware.h>

#include <linux/usb.h>

#include <net/bluetooth/bluetooth.h>

#ifndef CONFIG_BT_HCIBCM203X_DEBUG
#undef  BT_DBG
#define BT_DBG(D...)
#endif

#define VERSION "1.0"

static int ignore = 0;

static 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 timer_list	timer;

	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 pt_regs *regs)
{
	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;

		mod_timer(&data->timer, jiffies + (HZ / 10));
		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_timer(unsigned long user_data)
{
	struct bcm203x_data *data = (struct bcm203x_data *) user_data;

	if (usb_submit_urb(data->urb, GFP_ATOMIC) < 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 (ignore || (intf->cur_altsetting->desc.bInterfaceNumber != 0))
		return -ENODEV;

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

	if (request_firmware(&firmware, "BCM2033-MD.hex", &udev->dev) < 0) {
		BT_ERR("Mini driver request failed");
		usb_free_urb(data->urb);
		kfree(data);
		return -EIO;
	}

	BT_DBG("minidrv data %p size %d", 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);
		kfree(data);
		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);
		kfree(data);
		return -EIO;
	}

	BT_DBG("firmware data %p size %d", firmware->data, firmware->size);

	data->fw_data = kmalloc(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);
		kfree(data);
		return -ENOMEM;
	}

	memcpy(data->fw_data, firmware->data, firmware->size);
	data->fw_size = firmware->size;
	data->fw_sent = 0;

	release_firmware(firmware);

	init_timer(&data->timer);
	data->timer.function = bcm203x_timer;
	data->timer.data = (unsigned long) data;

	usb_set_intfdata(intf, data);

	mod_timer(&data->timer, jiffies + HZ);

	return 0;
}

static void bcm203x_disconnect(struct usb_interface *intf)
{
	struct bcm203x_data *data = usb_get_intfdata(intf);

	BT_DBG("intf %p", intf);

	usb_kill_urb(data->urb);

	usb_set_intfdata(intf, NULL);

	usb_free_urb(data->urb);
	kfree(data->fw_data);
	kfree(data->buffer);
	kfree(data);
}

static struct usb_driver bcm203x_driver = {
	.name		= "bcm203x",
	.probe		= bcm203x_probe,
	.disconnect	= bcm203x_disconnect,
	.id_table	= bcm203x_table,
};

static int __init bcm203x_init(void)
{
	int err;

	BT_INFO("Broadcom Blutonium firmware driver ver %s", VERSION);

	err = usb_register(&bcm203x_driver);
	if (err < 0)
		BT_ERR("Failed to register USB driver");

	return err;
}

static void __exit bcm203x_exit(void)
{
	usb_deregister(&bcm203x_driver);
}

module_init(bcm203x_init);
module_exit(bcm203x_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("Broadcom Blutonium firmware driver ver " VERSION);
MODULE_VERSION(VERSION);
MODULE_LICENSE("GPL");
Commit	Line	Data
1da177e4 LT	1	/*
	2	*
	3	* Broadcom Blutonium firmware driver
	4	*
	5	* Copyright (C) 2003 Maxim Krasnyansky <maxk@qualcomm.com>
	6	* Copyright (C) 2003 Marcel Holtmann <marcel@holtmann.org>
	7	*
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License as published by
	11	* the Free Software Foundation; either version 2 of the License, or
	12	* (at your option) any later version.
	13	*
	14	* This program is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	* GNU General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU General Public License
	20	* along with this program; if not, write to the Free Software
	21	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	22	*
	23	*/
	24
1da177e4 LT	25	#include <linux/module.h>
	26
	27	#include <linux/kernel.h>
	28	#include <linux/init.h>
	29	#include <linux/slab.h>
	30	#include <linux/types.h>
	31	#include <linux/errno.h>
	32	#include <linux/timer.h>
	33
	34	#include <linux/device.h>
	35	#include <linux/firmware.h>
	36
	37	#include <linux/usb.h>
	38
	39	#include <net/bluetooth/bluetooth.h>
	40
	41	#ifndef CONFIG_BT_HCIBCM203X_DEBUG
	42	#undef BT_DBG
	43	#define BT_DBG(D...)
	44	#endif
	45
	46	#define VERSION "1.0"
	47
	48	static int ignore = 0;
	49
	50	static struct usb_device_id bcm203x_table[] = {
	51	/* Broadcom Blutonium (BCM2033) */
	52	{ USB_DEVICE(0x0a5c, 0x2033) },
	53
	54	{ } /* Terminating entry */
	55	};
	56
	57	MODULE_DEVICE_TABLE(usb, bcm203x_table);
	58
	59	#define BCM203X_ERROR 0
	60	#define BCM203X_RESET 1
	61	#define BCM203X_LOAD_MINIDRV 2
	62	#define BCM203X_SELECT_MEMORY 3
	63	#define BCM203X_CHECK_MEMORY 4
	64	#define BCM203X_LOAD_FIRMWARE 5
	65	#define BCM203X_CHECK_FIRMWARE 6
	66
	67	#define BCM203X_IN_EP 0x81
	68	#define BCM203X_OUT_EP 0x02
	69
	70	struct bcm203x_data {
	71	struct usb_device *udev;
	72
	73	unsigned long state;
	74
	75	struct timer_list timer;
	76
	77	struct urb *urb;
	78	unsigned char *buffer;
	79
	80	unsigned char *fw_data;
	81	unsigned int fw_size;
	82	unsigned int fw_sent;
	83	};
	84
	85	static void bcm203x_complete(struct urb urb, struct pt_regs regs)
	86	{
	87	struct bcm203x_data *data = urb->context;
	88	struct usb_device *udev = urb->dev;
89	int len;
90
91	BT_DBG("udev %p urb %p", udev, urb);
92
93	if (urb->status) {
94	BT_ERR("URB failed with status %d", urb->status);
95	data->state = BCM203X_ERROR;
96	return;
97	}
98
99	switch (data->state) {
100	case BCM203X_LOAD_MINIDRV:
101	memcpy(data->buffer, "#", 1);
102
103	usb_fill_bulk_urb(urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP),
104	data->buffer, 1, bcm203x_complete, data);
105
106	data->state = BCM203X_SELECT_MEMORY;
107
108	mod_timer(&data->timer, jiffies + (HZ / 10));
109	break;
110
111	case BCM203X_SELECT_MEMORY:
112	usb_fill_int_urb(urb, udev, usb_rcvintpipe(udev, BCM203X_IN_EP),
113	data->buffer, 32, bcm203x_complete, data, 1);
114
115	data->state = BCM203X_CHECK_MEMORY;
116
117	if (usb_submit_urb(data->urb, GFP_ATOMIC) < 0)
118	BT_ERR("Can't submit URB");
119	break;
120
121	case BCM203X_CHECK_MEMORY:
122	if (data->buffer[0] != '#') {
123	BT_ERR("Memory select failed");
124	data->state = BCM203X_ERROR;
125	break;
126	}
127
128	data->state = BCM203X_LOAD_FIRMWARE;
129
130	case BCM203X_LOAD_FIRMWARE:
131	if (data->fw_sent == data->fw_size) {
132	usb_fill_int_urb(urb, udev, usb_rcvintpipe(udev, BCM203X_IN_EP),
133	data->buffer, 32, bcm203x_complete, data, 1);
134
135	data->state = BCM203X_CHECK_FIRMWARE;
136	} else {
137	len = min_t(uint, data->fw_size - data->fw_sent, 4096);
138
139	usb_fill_bulk_urb(urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP),
140	data->fw_data + data->fw_sent, len, bcm203x_complete, data);
141
142	data->fw_sent += len;
143	}
144
145	if (usb_submit_urb(data->urb, GFP_ATOMIC) < 0)
146	BT_ERR("Can't submit URB");
147	break;
148
149	case BCM203X_CHECK_FIRMWARE:
150	if (data->buffer[0] != '.') {
151	BT_ERR("Firmware loading failed");
152	data->state = BCM203X_ERROR;
153	break;
154	}
155
156	data->state = BCM203X_RESET;
157	break;
158	}
159	}
160
161	static void bcm203x_timer(unsigned long user_data)
162	{
163	struct bcm203x_data data = (struct bcm203x_data ) user_data;
164
165	if (usb_submit_urb(data->urb, GFP_ATOMIC) < 0)
166	BT_ERR("Can't submit URB");
167	}
168
169	static int bcm203x_probe(struct usb_interface intf, const struct usb_device_id id)
170	{
171	const struct firmware *firmware;
172	struct usb_device *udev = interface_to_usbdev(intf);
173	struct bcm203x_data *data;
174	int size;
175
176	BT_DBG("intf %p id %p", intf, id);
177
178	if (ignore \|\| (intf->cur_altsetting->desc.bInterfaceNumber != 0))
179	return -ENODEV;
180
089b1dbb	181	data = kzalloc(sizeof(*data), GFP_KERNEL);
1da177e4 LT	182	if (!data) {
	183	BT_ERR("Can't allocate memory for data structure");
	184	return -ENOMEM;
	185	}
	186
1da177e4 LT	187	data->udev = udev;
	188	data->state = BCM203X_LOAD_MINIDRV;
	189
	190	data->urb = usb_alloc_urb(0, GFP_KERNEL);
	191	if (!data->urb) {
	192	BT_ERR("Can't allocate URB");
	193	kfree(data);
	194	return -ENOMEM;
	195	}
	196
	197	if (request_firmware(&firmware, "BCM2033-MD.hex", &udev->dev) < 0) {
	198	BT_ERR("Mini driver request failed");
	199	usb_free_urb(data->urb);
	200	kfree(data);
	201	return -EIO;
	202	}
	203
	204	BT_DBG("minidrv data %p size %d", firmware->data, firmware->size);
	205
	206	size = max_t(uint, firmware->size, 4096);
	207
	208	data->buffer = kmalloc(size, GFP_KERNEL);
	209	if (!data->buffer) {
	210	BT_ERR("Can't allocate memory for mini driver");
	211	release_firmware(firmware);
	212	usb_free_urb(data->urb);
	213	kfree(data);
	214	return -ENOMEM;
	215	}
	216
	217	memcpy(data->buffer, firmware->data, firmware->size);
	218
	219	usb_fill_bulk_urb(data->urb, udev, usb_sndbulkpipe(udev, BCM203X_OUT_EP),
	220	data->buffer, firmware->size, bcm203x_complete, data);
	221
	222	release_firmware(firmware);
	223
	224	if (request_firmware(&firmware, "BCM2033-FW.bin", &udev->dev) < 0) {
	225	BT_ERR("Firmware request failed");
	226	usb_free_urb(data->urb);
	227	kfree(data->buffer);
	228	kfree(data);
	229	return -EIO;
	230	}
	231
	232	BT_DBG("firmware data %p size %d", firmware->data, firmware->size);
	233
	234	data->fw_data = kmalloc(firmware->size, GFP_KERNEL);
	235	if (!data->fw_data) {
	236	BT_ERR("Can't allocate memory for firmware image");
73ca66b9	237	release_firmware(firmware);
1da177e4 LT	238	usb_free_urb(data->urb);
	239	kfree(data->buffer);
	240	kfree(data);
	241	return -ENOMEM;
	242	}
	243
	244	memcpy(data->fw_data, firmware->data, firmware->size);
	245	data->fw_size = firmware->size;
	246	data->fw_sent = 0;
	247
	248	release_firmware(firmware);
	249
	250	init_timer(&data->timer);
	251	data->timer.function = bcm203x_timer;
	252	data->timer.data = (unsigned long) data;
	253
	254	usb_set_intfdata(intf, data);
	255
	256	mod_timer(&data->timer, jiffies + HZ);
	257
	258	return 0;
	259	}
	260
	261	static void bcm203x_disconnect(struct usb_interface *intf)
	262	{
	263	struct bcm203x_data *data = usb_get_intfdata(intf);
	264
	265	BT_DBG("intf %p", intf);
	266
	267	usb_kill_urb(data->urb);
	268
	269	usb_set_intfdata(intf, NULL);
	270
	271	usb_free_urb(data->urb);
	272	kfree(data->fw_data);
	273	kfree(data->buffer);
	274	kfree(data);
	275	}
	276
	277	static struct usb_driver bcm203x_driver = {
1da177e4 LT	278	.name = "bcm203x",
	279	.probe = bcm203x_probe,
	280	.disconnect = bcm203x_disconnect,
	281	.id_table = bcm203x_table,
	282	};
	283
	284	static int __init bcm203x_init(void)
	285	{
	286	int err;
	287
	288	BT_INFO("Broadcom Blutonium firmware driver ver %s", VERSION);
	289
	290	err = usb_register(&bcm203x_driver);
	291	if (err < 0)
	292	BT_ERR("Failed to register USB driver");
	293
	294	return err;
	295	}
	296
	297	static void __exit bcm203x_exit(void)
	298	{
	299	usb_deregister(&bcm203x_driver);
	300	}
	301
	302	module_init(bcm203x_init);
	303	module_exit(bcm203x_exit);
	304
	305	module_param(ignore, bool, 0644);
	306	MODULE_PARM_DESC(ignore, "Ignore devices from the matching table");
	307
	308	MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
	309	MODULE_DESCRIPTION("Broadcom Blutonium firmware driver ver " VERSION);
	310	MODULE_VERSION(VERSION);
	311	MODULE_LICENSE("GPL");