[deliverable/linux.git] / drivers / bluetooth / dtl1_cs.c

/*
 *
 *  A driver for Nokia Connectivity Card DTL-1 devices
 *
 *  Copyright (C) 2001-2002  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 version 2 as
 *  published by the Free Software Foundation;
 *
 *  Software distributed under the License is distributed on an "AS
 *  IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 *  implied. See the License for the specific language governing
 *  rights and limitations under the License.
 *
 *  The initial developer of the original code is David A. Hinds
 *  <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
 *  are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
 *
 */

#include <linux/module.h>

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/ptrace.h>
#include <linux/ioport.h>
#include <linux/spinlock.h>
#include <linux/moduleparam.h>

#include <linux/skbuff.h>
#include <linux/string.h>
#include <linux/serial.h>
#include <linux/serial_reg.h>
#include <linux/bitops.h>
#include <asm/system.h>
#include <asm/io.h>

#include <pcmcia/cs_types.h>
#include <pcmcia/cs.h>
#include <pcmcia/cistpl.h>
#include <pcmcia/ciscode.h>
#include <pcmcia/ds.h>
#include <pcmcia/cisreg.h>

#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>


/* ======================== Module parameters ======================== */


MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
MODULE_DESCRIPTION("Bluetooth driver for Nokia Connectivity Card DTL-1");
MODULE_LICENSE("GPL");


/* ======================== Local structures ======================== */


typedef struct dtl1_info_t {
	struct pcmcia_device *p_dev;

	struct hci_dev *hdev;

	spinlock_t lock;		/* For serializing operations */

	unsigned long flowmask;		/* HCI flow mask */
	int ri_latch;

	struct sk_buff_head txq;
	unsigned long tx_state;

	unsigned long rx_state;
	unsigned long rx_count;
	struct sk_buff *rx_skb;
} dtl1_info_t;


static int dtl1_config(struct pcmcia_device *link);
static void dtl1_release(struct pcmcia_device *link);

static void dtl1_detach(struct pcmcia_device *p_dev);


/* Transmit states  */
#define XMIT_SENDING  1
#define XMIT_WAKEUP   2
#define XMIT_WAITING  8

/* Receiver States */
#define RECV_WAIT_NSH   0
#define RECV_WAIT_DATA  1


typedef struct {
	u8 type;
	u8 zero;
	u16 len;
} __attribute__ ((packed)) nsh_t;	/* Nokia Specific Header */

#define NSHL  4				/* Nokia Specific Header Length */


/* ======================== Interrupt handling ======================== */


static int dtl1_write(unsigned int iobase, int fifo_size, __u8 *buf, int len)
{
	int actual = 0;

	/* Tx FIFO should be empty */
	if (!(inb(iobase + UART_LSR) & UART_LSR_THRE))
		return 0;

	/* Fill FIFO with current frame */
	while ((fifo_size-- > 0) && (actual < len)) {
		/* Transmit next byte */
		outb(buf[actual], iobase + UART_TX);
		actual++;
	}

	return actual;
}


static void dtl1_write_wakeup(dtl1_info_t *info)
{
	if (!info) {
		BT_ERR("Unknown device");
		return;
	}

	if (test_bit(XMIT_WAITING, &(info->tx_state))) {
		set_bit(XMIT_WAKEUP, &(info->tx_state));
		return;
	}

	if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) {
		set_bit(XMIT_WAKEUP, &(info->tx_state));
		return;
	}

	do {
		register unsigned int iobase = info->p_dev->io.BasePort1;
		register struct sk_buff *skb;
		register int len;

		clear_bit(XMIT_WAKEUP, &(info->tx_state));

		if (!pcmcia_dev_present(info->p_dev))
			return;

		if (!(skb = skb_dequeue(&(info->txq))))
			break;

		/* Send frame */
		len = dtl1_write(iobase, 32, skb->data, skb->len);

		if (len == skb->len) {
			set_bit(XMIT_WAITING, &(info->tx_state));
			kfree_skb(skb);
		} else {
			skb_pull(skb, len);
			skb_queue_head(&(info->txq), skb);
		}

		info->hdev->stat.byte_tx += len;

	} while (test_bit(XMIT_WAKEUP, &(info->tx_state)));

	clear_bit(XMIT_SENDING, &(info->tx_state));
}


static void dtl1_control(dtl1_info_t *info, struct sk_buff *skb)
{
	u8 flowmask = *(u8 *)skb->data;
	int i;

	printk(KERN_INFO "Bluetooth: Nokia control data =");
	for (i = 0; i < skb->len; i++) {
		printk(" %02x", skb->data[i]);
	}
	printk("\n");

	/* transition to active state */
	if (((info->flowmask & 0x07) == 0) && ((flowmask & 0x07) != 0)) {
		clear_bit(XMIT_WAITING, &(info->tx_state));
		dtl1_write_wakeup(info);
	}

	info->flowmask = flowmask;

	kfree_skb(skb);
}


static void dtl1_receive(dtl1_info_t *info)
{
	unsigned int iobase;
	nsh_t *nsh;
	int boguscount = 0;

	if (!info) {
		BT_ERR("Unknown device");
		return;
	}

	iobase = info->p_dev->io.BasePort1;

	do {
		info->hdev->stat.byte_rx++;

		/* Allocate packet */
		if (info->rx_skb == NULL)
			if (!(info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
				BT_ERR("Can't allocate mem for new packet");
				info->rx_state = RECV_WAIT_NSH;
				info->rx_count = NSHL;
				return;
			}

		*skb_put(info->rx_skb, 1) = inb(iobase + UART_RX);
		nsh = (nsh_t *)info->rx_skb->data;

		info->rx_count--;

		if (info->rx_count == 0) {

			switch (info->rx_state) {
			case RECV_WAIT_NSH:
				info->rx_state = RECV_WAIT_DATA;
				info->rx_count = nsh->len + (nsh->len & 0x0001);
				break;
			case RECV_WAIT_DATA:
				bt_cb(info->rx_skb)->pkt_type = nsh->type;

				/* remove PAD byte if it exists */
				if (nsh->len & 0x0001) {
					info->rx_skb->tail--;
					info->rx_skb->len--;
				}

				/* remove NSH */
				skb_pull(info->rx_skb, NSHL);

				switch (bt_cb(info->rx_skb)->pkt_type) {
				case 0x80:
					/* control data for the Nokia Card */
					dtl1_control(info, info->rx_skb);
					break;
				case 0x82:
				case 0x83:
				case 0x84:
					/* send frame to the HCI layer */
					info->rx_skb->dev = (void *) info->hdev;
					bt_cb(info->rx_skb)->pkt_type &= 0x0f;
					hci_recv_frame(info->rx_skb);
					break;
				default:
					/* unknown packet */
					BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type);
					kfree_skb(info->rx_skb);
					break;
				}

				info->rx_state = RECV_WAIT_NSH;
				info->rx_count = NSHL;
				info->rx_skb = NULL;
				break;
			}

		}

		/* Make sure we don't stay here too long */
		if (boguscount++ > 32)
			break;

	} while (inb(iobase + UART_LSR) & UART_LSR_DR);
}


static irqreturn_t dtl1_interrupt(int irq, void *dev_inst)
{
	dtl1_info_t *info = dev_inst;
	unsigned int iobase;
	unsigned char msr;
	int boguscount = 0;
	int iir, lsr;
	irqreturn_t r = IRQ_NONE;

	if (!info || !info->hdev)
		/* our irq handler is shared */
		return IRQ_NONE;

	iobase = info->p_dev->io.BasePort1;

	spin_lock(&(info->lock));

	iir = inb(iobase + UART_IIR) & UART_IIR_ID;
	while (iir) {

		r = IRQ_HANDLED;
		/* Clear interrupt */
		lsr = inb(iobase + UART_LSR);

		switch (iir) {
		case UART_IIR_RLSI:
			BT_ERR("RLSI");
			break;
		case UART_IIR_RDI:
			/* Receive interrupt */
			dtl1_receive(info);
			break;
		case UART_IIR_THRI:
			if (lsr & UART_LSR_THRE) {
				/* Transmitter ready for data */
				dtl1_write_wakeup(info);
			}
			break;
		default:
			BT_ERR("Unhandled IIR=%#x", iir);
			break;
		}

		/* Make sure we don't stay here too long */
		if (boguscount++ > 100)
			break;

		iir = inb(iobase + UART_IIR) & UART_IIR_ID;

	}

	msr = inb(iobase + UART_MSR);

	if (info->ri_latch ^ (msr & UART_MSR_RI)) {
		info->ri_latch = msr & UART_MSR_RI;
		clear_bit(XMIT_WAITING, &(info->tx_state));
		dtl1_write_wakeup(info);
		r = IRQ_HANDLED;
	}

	spin_unlock(&(info->lock));

	return r;
}


/* ======================== HCI interface ======================== */


static int dtl1_hci_open(struct hci_dev *hdev)
{
	set_bit(HCI_RUNNING, &(hdev->flags));

	return 0;
}


static int dtl1_hci_flush(struct hci_dev *hdev)
{
	dtl1_info_t *info = (dtl1_info_t *)(hdev->driver_data);

	/* Drop TX queue */
	skb_queue_purge(&(info->txq));

	return 0;
}


static int dtl1_hci_close(struct hci_dev *hdev)
{
	if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
		return 0;

	dtl1_hci_flush(hdev);

	return 0;
}


static int dtl1_hci_send_frame(struct sk_buff *skb)
{
	dtl1_info_t *info;
	struct hci_dev *hdev = (struct hci_dev *)(skb->dev);
	struct sk_buff *s;
	nsh_t nsh;

	if (!hdev) {
		BT_ERR("Frame for unknown HCI device (hdev=NULL)");
		return -ENODEV;
	}

	info = (dtl1_info_t *)(hdev->driver_data);

	switch (bt_cb(skb)->pkt_type) {
	case HCI_COMMAND_PKT:
		hdev->stat.cmd_tx++;
		nsh.type = 0x81;
		break;
	case HCI_ACLDATA_PKT:
		hdev->stat.acl_tx++;
		nsh.type = 0x82;
		break;
	case HCI_SCODATA_PKT:
		hdev->stat.sco_tx++;
		nsh.type = 0x83;
		break;
	default:
		return -EILSEQ;
	};

	nsh.zero = 0;
	nsh.len = skb->len;

	s = bt_skb_alloc(NSHL + skb->len + 1, GFP_ATOMIC);
	if (!s)
		return -ENOMEM;

	skb_reserve(s, NSHL);
	skb_copy_from_linear_data(skb, skb_put(s, skb->len), skb->len);
	if (skb->len & 0x0001)
		*skb_put(s, 1) = 0;	/* PAD */

	/* Prepend skb with Nokia frame header and queue */
	memcpy(skb_push(s, NSHL), &nsh, NSHL);
	skb_queue_tail(&(info->txq), s);

	dtl1_write_wakeup(info);

	kfree_skb(skb);

	return 0;
}


static void dtl1_hci_destruct(struct hci_dev *hdev)
{
}


static int dtl1_hci_ioctl(struct hci_dev *hdev, unsigned int cmd,  unsigned long arg)
{
	return -ENOIOCTLCMD;
}


/* ======================== Card services HCI interaction ======================== */


static int dtl1_open(dtl1_info_t *info)
{
	unsigned long flags;
	unsigned int iobase = info->p_dev->io.BasePort1;
	struct hci_dev *hdev;

	spin_lock_init(&(info->lock));

	skb_queue_head_init(&(info->txq));

	info->rx_state = RECV_WAIT_NSH;
	info->rx_count = NSHL;
	info->rx_skb = NULL;

	set_bit(XMIT_WAITING, &(info->tx_state));

	/* Initialize HCI device */
	hdev = hci_alloc_dev();
	if (!hdev) {
		BT_ERR("Can't allocate HCI device");
		return -ENOMEM;
	}

	info->hdev = hdev;

	hdev->bus = HCI_PCCARD;
	hdev->driver_data = info;
	SET_HCIDEV_DEV(hdev, &info->p_dev->dev);

	hdev->open     = dtl1_hci_open;
	hdev->close    = dtl1_hci_close;
	hdev->flush    = dtl1_hci_flush;
	hdev->send     = dtl1_hci_send_frame;
	hdev->destruct = dtl1_hci_destruct;
	hdev->ioctl    = dtl1_hci_ioctl;

	hdev->owner = THIS_MODULE;

	spin_lock_irqsave(&(info->lock), flags);

	/* Reset UART */
	outb(0, iobase + UART_MCR);

	/* Turn off interrupts */
	outb(0, iobase + UART_IER);

	/* Initialize UART */
	outb(UART_LCR_WLEN8, iobase + UART_LCR);	/* Reset DLAB */
	outb((UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2), iobase + UART_MCR);

	info->ri_latch = inb(info->p_dev->io.BasePort1 + UART_MSR) & UART_MSR_RI;

	/* Turn on interrupts */
	outb(UART_IER_RLSI | UART_IER_RDI | UART_IER_THRI, iobase + UART_IER);

	spin_unlock_irqrestore(&(info->lock), flags);

	/* Timeout before it is safe to send the first HCI packet */
	msleep(2000);

	/* Register HCI device */
	if (hci_register_dev(hdev) < 0) {
		BT_ERR("Can't register HCI device");
		info->hdev = NULL;
		hci_free_dev(hdev);
		return -ENODEV;
	}

	return 0;
}


static int dtl1_close(dtl1_info_t *info)
{
	unsigned long flags;
	unsigned int iobase = info->p_dev->io.BasePort1;
	struct hci_dev *hdev = info->hdev;

	if (!hdev)
		return -ENODEV;

	dtl1_hci_close(hdev);

	spin_lock_irqsave(&(info->lock), flags);

	/* Reset UART */
	outb(0, iobase + UART_MCR);

	/* Turn off interrupts */
	outb(0, iobase + UART_IER);

	spin_unlock_irqrestore(&(info->lock), flags);

	if (hci_unregister_dev(hdev) < 0)
		BT_ERR("Can't unregister HCI device %s", hdev->name);

	hci_free_dev(hdev);

	return 0;
}

static int dtl1_probe(struct pcmcia_device *link)
{
	dtl1_info_t *info;

	/* Create new info device */
	info = kzalloc(sizeof(*info), GFP_KERNEL);
	if (!info)
		return -ENOMEM;

	info->p_dev = link;
	link->priv = info;

	link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
	link->io.NumPorts1 = 8;

	link->conf.Attributes = CONF_ENABLE_IRQ;
	link->conf.IntType = INT_MEMORY_AND_IO;

	return dtl1_config(link);
}


static void dtl1_detach(struct pcmcia_device *link)
{
	dtl1_info_t *info = link->priv;

	dtl1_release(link);

	kfree(info);
}

static int dtl1_confcheck(struct pcmcia_device *p_dev,
			  cistpl_cftable_entry_t *cf,
			  cistpl_cftable_entry_t *dflt,
			  unsigned int vcc,
			  void *priv_data)
{
	if ((cf->io.nwin == 1) && (cf->io.win[0].len > 8)) {
		p_dev->io.BasePort1 = cf->io.win[0].base;
		p_dev->io.NumPorts1 = cf->io.win[0].len;	/*yo */
		p_dev->io.IOAddrLines = cf->io.flags & CISTPL_IO_LINES_MASK;
		if (!pcmcia_request_io(p_dev, &p_dev->io))
			return 0;
	}
	return -ENODEV;
}

static int dtl1_config(struct pcmcia_device *link)
{
	dtl1_info_t *info = link->priv;
	int i;

	/* Look for a generic full-sized window */
	link->io.NumPorts1 = 8;
	if (pcmcia_loop_config(link, dtl1_confcheck, NULL) < 0)
		goto failed;

	i = pcmcia_request_irq(link, dtl1_interrupt);
	if (i != 0)
		goto failed;

	i = pcmcia_request_configuration(link, &link->conf);
	if (i != 0)
		goto failed;

	if (dtl1_open(info) != 0)
		goto failed;

	return 0;

failed:
	dtl1_release(link);
	return -ENODEV;
}


static void dtl1_release(struct pcmcia_device *link)
{
	dtl1_info_t *info = link->priv;

	dtl1_close(info);

	pcmcia_disable_device(link);
}


static struct pcmcia_device_id dtl1_ids[] = {
	PCMCIA_DEVICE_PROD_ID12("Nokia Mobile Phones", "DTL-1", 0xe1bfdd64, 0xe168480d),
	PCMCIA_DEVICE_PROD_ID12("Nokia Mobile Phones", "DTL-4", 0xe1bfdd64, 0x9102bc82),
	PCMCIA_DEVICE_PROD_ID12("Socket", "CF", 0xb38bcc2e, 0x44ebf863),
	PCMCIA_DEVICE_PROD_ID12("Socket", "CF+ Personal Network Card", 0xb38bcc2e, 0xe732bae3),
	PCMCIA_DEVICE_NULL
};
MODULE_DEVICE_TABLE(pcmcia, dtl1_ids);

static struct pcmcia_driver dtl1_driver = {
	.owner		= THIS_MODULE,
	.drv		= {
		.name	= "dtl1_cs",
	},
	.probe		= dtl1_probe,
	.remove		= dtl1_detach,
	.id_table	= dtl1_ids,
};

static int __init init_dtl1_cs(void)
{
	return pcmcia_register_driver(&dtl1_driver);
}


static void __exit exit_dtl1_cs(void)
{
	pcmcia_unregister_driver(&dtl1_driver);
}

module_init(init_dtl1_cs);
module_exit(exit_dtl1_cs);
Commit	Line	Data
1da177e4 LT	1	/*
	2	*
	3	* A driver for Nokia Connectivity Card DTL-1 devices
	4	*
	5	* Copyright (C) 2001-2002 Marcel Holtmann <marcel@holtmann.org>
	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 version 2 as
	10	* published by the Free Software Foundation;
	11	*
	12	* Software distributed under the License is distributed on an "AS
	13	* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
	14	* implied. See the License for the specific language governing
	15	* rights and limitations under the License.
	16	*
	17	* The initial developer of the original code is David A. Hinds
	18	* <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
	19	* are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
	20	*
	21	*/
	22
1da177e4 LT	23	#include <linux/module.h>
	24
	25	#include <linux/kernel.h>
	26	#include <linux/init.h>
	27	#include <linux/slab.h>
	28	#include <linux/types.h>
1da177e4 LT	29	#include <linux/delay.h>
	30	#include <linux/errno.h>
	31	#include <linux/ptrace.h>
	32	#include <linux/ioport.h>
	33	#include <linux/spinlock.h>
	34	#include <linux/moduleparam.h>
	35
	36	#include <linux/skbuff.h>
	37	#include <linux/string.h>
	38	#include <linux/serial.h>
	39	#include <linux/serial_reg.h>
	40	#include <linux/bitops.h>
	41	#include <asm/system.h>
	42	#include <asm/io.h>
	43
1da177e4 LT	44	#include <pcmcia/cs_types.h>
	45	#include <pcmcia/cs.h>
	46	#include <pcmcia/cistpl.h>
	47	#include <pcmcia/ciscode.h>
	48	#include <pcmcia/ds.h>
	49	#include <pcmcia/cisreg.h>
	50
	51	#include <net/bluetooth/bluetooth.h>
	52	#include <net/bluetooth/hci_core.h>
	53
	54
	55
	56	/* ======================== Module parameters ======================== */
	57
	58
	59	MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
	60	MODULE_DESCRIPTION("Bluetooth driver for Nokia Connectivity Card DTL-1");
	61	MODULE_LICENSE("GPL");
	62
	63
	64
	65	/* ======================== Local structures ======================== */
	66
	67
	68	typedef struct dtl1_info_t {
fd238232	69	struct pcmcia_device *p_dev;
1da177e4 LT	70
	71	struct hci_dev *hdev;
	72
	73	spinlock_t lock; /* For serializing operations */
	74
	75	unsigned long flowmask; /* HCI flow mask */
	76	int ri_latch;
	77
	78	struct sk_buff_head txq;
	79	unsigned long tx_state;
	80
	81	unsigned long rx_state;
	82	unsigned long rx_count;
	83	struct sk_buff *rx_skb;
	84	} dtl1_info_t;
	85
	86
15b99ac1	87	static int dtl1_config(struct pcmcia_device *link);
fba395ee	88	static void dtl1_release(struct pcmcia_device *link);
1da177e4	89
cc3b4866	90	static void dtl1_detach(struct pcmcia_device *p_dev);
1da177e4	91
1da177e4 LT	92
	93	/* Transmit states */
	94	#define XMIT_SENDING 1
	95	#define XMIT_WAKEUP 2
	96	#define XMIT_WAITING 8
	97
	98	/* Receiver States */
	99	#define RECV_WAIT_NSH 0
	100	#define RECV_WAIT_DATA 1
	101
	102
	103	typedef struct {
	104	u8 type;
	105	u8 zero;
	106	u16 len;
	107	} __attribute__ ((packed)) nsh_t; /* Nokia Specific Header */
	108
	109	#define NSHL 4 /* Nokia Specific Header Length */
	110
	111
	112
	113	/* ======================== Interrupt handling ======================== */
	114
	115
	116	static int dtl1_write(unsigned int iobase, int fifo_size, __u8 *buf, int len)
	117	{
	118	int actual = 0;
	119
	120	/* Tx FIFO should be empty */
	121	if (!(inb(iobase + UART_LSR) & UART_LSR_THRE))
	122	return 0;
	123
	124	/* Fill FIFO with current frame */
	125	while ((fifo_size-- > 0) && (actual < len)) {
	126	/* Transmit next byte */
	127	outb(buf[actual], iobase + UART_TX);
	128	actual++;
	129	}
	130
	131	return actual;
	132	}
	133
	134
	135	static void dtl1_write_wakeup(dtl1_info_t *info)
	136	{
	137	if (!info) {
	138	BT_ERR("Unknown device");
	139	return;
	140	}
	141
	142	if (test_bit(XMIT_WAITING, &(info->tx_state))) {
	143	set_bit(XMIT_WAKEUP, &(info->tx_state));
	144	return;
	145	}
	146
	147	if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) {
	148	set_bit(XMIT_WAKEUP, &(info->tx_state));
	149	return;
	150	}
	151
	152	do {
fd238232	153	register unsigned int iobase = info->p_dev->io.BasePort1;
1da177e4 LT	154	register struct sk_buff *skb;
	155	register int len;
	156
	157	clear_bit(XMIT_WAKEUP, &(info->tx_state));
	158
e2d40963	159	if (!pcmcia_dev_present(info->p_dev))
1da177e4 LT	160	return;
	161
	162	if (!(skb = skb_dequeue(&(info->txq))))
	163	break;
	164
	165	/* Send frame */
	166	len = dtl1_write(iobase, 32, skb->data, skb->len);
	167
	168	if (len == skb->len) {
	169	set_bit(XMIT_WAITING, &(info->tx_state));
	170	kfree_skb(skb);
	171	} else {
	172	skb_pull(skb, len);
	173	skb_queue_head(&(info->txq), skb);
	174	}
	175
	176	info->hdev->stat.byte_tx += len;
	177
	178	} while (test_bit(XMIT_WAKEUP, &(info->tx_state)));
	179
	180	clear_bit(XMIT_SENDING, &(info->tx_state));
	181	}
	182
	183
	184	static void dtl1_control(dtl1_info_t info, struct sk_buff skb)
	185	{
	186	u8 flowmask = (u8 )skb->data;
	187	int i;
	188
	189	printk(KERN_INFO "Bluetooth: Nokia control data =");
	190	for (i = 0; i < skb->len; i++) {
	191	printk(" %02x", skb->data[i]);
	192	}
	193	printk("\n");
	194
	195	/* transition to active state */
	196	if (((info->flowmask & 0x07) == 0) && ((flowmask & 0x07) != 0)) {
	197	clear_bit(XMIT_WAITING, &(info->tx_state));
	198	dtl1_write_wakeup(info);
	199	}
	200
	201	info->flowmask = flowmask;
	202
	203	kfree_skb(skb);
	204	}
	205
	206
	207	static void dtl1_receive(dtl1_info_t *info)
	208	{
	209	unsigned int iobase;
	210	nsh_t *nsh;
	211	int boguscount = 0;
	212
	213	if (!info) {
	214	BT_ERR("Unknown device");
	215	return;
	216	}
	217
fd238232	218	iobase = info->p_dev->io.BasePort1;
1da177e4 LT	219
	220	do {
	221	info->hdev->stat.byte_rx++;
	222
	223	/* Allocate packet */
	224	if (info->rx_skb == NULL)
	225	if (!(info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
	226	BT_ERR("Can't allocate mem for new packet");
	227	info->rx_state = RECV_WAIT_NSH;
	228	info->rx_count = NSHL;
	229	return;
	230	}
	231
	232	*skb_put(info->rx_skb, 1) = inb(iobase + UART_RX);
	233	nsh = (nsh_t *)info->rx_skb->data;
	234
	235	info->rx_count--;
	236
	237	if (info->rx_count == 0) {
	238
	239	switch (info->rx_state) {
	240	case RECV_WAIT_NSH:
	241	info->rx_state = RECV_WAIT_DATA;
	242	info->rx_count = nsh->len + (nsh->len & 0x0001);
	243	break;
	244	case RECV_WAIT_DATA:
0d48d939	245	bt_cb(info->rx_skb)->pkt_type = nsh->type;
1da177e4 LT	246
	247	/* remove PAD byte if it exists */
	248	if (nsh->len & 0x0001) {
	249	info->rx_skb->tail--;
	250	info->rx_skb->len--;
	251	}
	252
	253	/* remove NSH */
	254	skb_pull(info->rx_skb, NSHL);
	255
0d48d939	256	switch (bt_cb(info->rx_skb)->pkt_type) {
1da177e4 LT	257	case 0x80:
	258	/* control data for the Nokia Card */
	259	dtl1_control(info, info->rx_skb);
	260	break;
	261	case 0x82:
	262	case 0x83:
	263	case 0x84:
	264	/* send frame to the HCI layer */
	265	info->rx_skb->dev = (void *) info->hdev;
0d48d939	266	bt_cb(info->rx_skb)->pkt_type &= 0x0f;
1da177e4 LT	267	hci_recv_frame(info->rx_skb);
	268	break;
	269	default:
	270	/* unknown packet */
0d48d939	271	BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type);
1da177e4 LT	272	kfree_skb(info->rx_skb);
	273	break;
	274	}
	275
	276	info->rx_state = RECV_WAIT_NSH;
	277	info->rx_count = NSHL;
	278	info->rx_skb = NULL;
	279	break;
	280	}
	281
	282	}
	283
	284	/* Make sure we don't stay here too long */
	285	if (boguscount++ > 32)
	286	break;
	287
	288	} while (inb(iobase + UART_LSR) & UART_LSR_DR);
	289	}
	290
	291
7d12e780	292	static irqreturn_t dtl1_interrupt(int irq, void *dev_inst)
1da177e4 LT	293	{
	294	dtl1_info_t *info = dev_inst;
	295	unsigned int iobase;
	296	unsigned char msr;
	297	int boguscount = 0;
	298	int iir, lsr;
aafcf998	299	irqreturn_t r = IRQ_NONE;
1da177e4	300
7427847d MF	301	if (!info \|\| !info->hdev)
	302	/* our irq handler is shared */
	303	return IRQ_NONE;
1da177e4	304
fd238232	305	iobase = info->p_dev->io.BasePort1;
1da177e4 LT	306
	307	spin_lock(&(info->lock));
	308
	309	iir = inb(iobase + UART_IIR) & UART_IIR_ID;
	310	while (iir) {
	311
aafcf998	312	r = IRQ_HANDLED;
1da177e4 LT	313	/* Clear interrupt */
	314	lsr = inb(iobase + UART_LSR);
	315
	316	switch (iir) {
	317	case UART_IIR_RLSI:
	318	BT_ERR("RLSI");
	319	break;
	320	case UART_IIR_RDI:
	321	/* Receive interrupt */
	322	dtl1_receive(info);
	323	break;
	324	case UART_IIR_THRI:
	325	if (lsr & UART_LSR_THRE) {
	326	/* Transmitter ready for data */
	327	dtl1_write_wakeup(info);
	328	}
	329	break;
	330	default:
	331	BT_ERR("Unhandled IIR=%#x", iir);
	332	break;
	333	}
	334
	335	/* Make sure we don't stay here too long */
	336	if (boguscount++ > 100)
	337	break;
	338
	339	iir = inb(iobase + UART_IIR) & UART_IIR_ID;
	340
	341	}
	342
	343	msr = inb(iobase + UART_MSR);
	344
	345	if (info->ri_latch ^ (msr & UART_MSR_RI)) {
	346	info->ri_latch = msr & UART_MSR_RI;
	347	clear_bit(XMIT_WAITING, &(info->tx_state));
	348	dtl1_write_wakeup(info);
aafcf998	349	r = IRQ_HANDLED;
1da177e4 LT	350	}
	351
	352	spin_unlock(&(info->lock));
	353
aafcf998	354	return r;
1da177e4 LT	355	}
	356
	357
	358
	359	/* ======================== HCI interface ======================== */
	360
	361
	362	static int dtl1_hci_open(struct hci_dev *hdev)
	363	{
	364	set_bit(HCI_RUNNING, &(hdev->flags));
	365
	366	return 0;
	367	}
	368
	369
	370	static int dtl1_hci_flush(struct hci_dev *hdev)
	371	{
	372	dtl1_info_t info = (dtl1_info_t )(hdev->driver_data);
	373
	374	/* Drop TX queue */
	375	skb_queue_purge(&(info->txq));
	376
	377	return 0;
	378	}
	379
	380
	381	static int dtl1_hci_close(struct hci_dev *hdev)
	382	{
	383	if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
	384	return 0;
	385
	386	dtl1_hci_flush(hdev);
	387
	388	return 0;
	389	}
	390
	391
	392	static int dtl1_hci_send_frame(struct sk_buff *skb)
	393	{
	394	dtl1_info_t *info;
	395	struct hci_dev hdev = (struct hci_dev )(skb->dev);
	396	struct sk_buff *s;
	397	nsh_t nsh;
	398
	399	if (!hdev) {
	400	BT_ERR("Frame for unknown HCI device (hdev=NULL)");
	401	return -ENODEV;
	402	}
	403
	404	info = (dtl1_info_t *)(hdev->driver_data);
	405
0d48d939	406	switch (bt_cb(skb)->pkt_type) {
1da177e4 LT	407	case HCI_COMMAND_PKT:
	408	hdev->stat.cmd_tx++;
	409	nsh.type = 0x81;
	410	break;
	411	case HCI_ACLDATA_PKT:
	412	hdev->stat.acl_tx++;
	413	nsh.type = 0x82;
	414	break;
	415	case HCI_SCODATA_PKT:
	416	hdev->stat.sco_tx++;
	417	nsh.type = 0x83;
	418	break;
3c4bdc4b MH	419	default:
3c4bdc4b MH	420	return -EILSEQ;
1da177e4 LT	421	};
	422
	423	nsh.zero = 0;
	424	nsh.len = skb->len;
	425
	426	s = bt_skb_alloc(NSHL + skb->len + 1, GFP_ATOMIC);
57136ca6 JJ	427	if (!s)
	428	return -ENOMEM;
	429
1da177e4	430	skb_reserve(s, NSHL);
d626f62b	431	skb_copy_from_linear_data(skb, skb_put(s, skb->len), skb->len);
1da177e4 LT	432	if (skb->len & 0x0001)
	433	skb_put(s, 1) = 0; / PAD */
	434
	435	/* Prepend skb with Nokia frame header and queue */
	436	memcpy(skb_push(s, NSHL), &nsh, NSHL);
	437	skb_queue_tail(&(info->txq), s);
	438
	439	dtl1_write_wakeup(info);
	440
	441	kfree_skb(skb);
	442
	443	return 0;
	444	}
	445
	446
	447	static void dtl1_hci_destruct(struct hci_dev *hdev)
	448	{
	449	}
	450
	451
	452	static int dtl1_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
	453	{
	454	return -ENOIOCTLCMD;
	455	}
	456
	457
	458
	459	/* ======================== Card services HCI interaction ======================== */
	460
	461
	462	static int dtl1_open(dtl1_info_t *info)
	463	{
	464	unsigned long flags;
fd238232	465	unsigned int iobase = info->p_dev->io.BasePort1;
1da177e4 LT	466	struct hci_dev *hdev;
	467
	468	spin_lock_init(&(info->lock));
	469
	470	skb_queue_head_init(&(info->txq));
	471
	472	info->rx_state = RECV_WAIT_NSH;
	473	info->rx_count = NSHL;
	474	info->rx_skb = NULL;
	475
	476	set_bit(XMIT_WAITING, &(info->tx_state));
	477
	478	/* Initialize HCI device */
	479	hdev = hci_alloc_dev();
	480	if (!hdev) {
	481	BT_ERR("Can't allocate HCI device");
	482	return -ENOMEM;
	483	}
	484
	485	info->hdev = hdev;
	486
c13854ce	487	hdev->bus = HCI_PCCARD;
1da177e4	488	hdev->driver_data = info;
27d35284	489	SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
1da177e4 LT	490
	491	hdev->open = dtl1_hci_open;
	492	hdev->close = dtl1_hci_close;
	493	hdev->flush = dtl1_hci_flush;
	494	hdev->send = dtl1_hci_send_frame;
	495	hdev->destruct = dtl1_hci_destruct;
	496	hdev->ioctl = dtl1_hci_ioctl;
	497
	498	hdev->owner = THIS_MODULE;
	499
	500	spin_lock_irqsave(&(info->lock), flags);
	501
	502	/* Reset UART */
	503	outb(0, iobase + UART_MCR);
	504
	505	/* Turn off interrupts */
	506	outb(0, iobase + UART_IER);
	507
	508	/* Initialize UART */
	509	outb(UART_LCR_WLEN8, iobase + UART_LCR); /* Reset DLAB */
	510	outb((UART_MCR_DTR \| UART_MCR_RTS \| UART_MCR_OUT2), iobase + UART_MCR);
	511
fd238232	512	info->ri_latch = inb(info->p_dev->io.BasePort1 + UART_MSR) & UART_MSR_RI;
1da177e4 LT	513
	514	/* Turn on interrupts */
	515	outb(UART_IER_RLSI \| UART_IER_RDI \| UART_IER_THRI, iobase + UART_IER);
	516
	517	spin_unlock_irqrestore(&(info->lock), flags);
	518
	519	/* Timeout before it is safe to send the first HCI packet */
	520	msleep(2000);
	521
	522	/* Register HCI device */
	523	if (hci_register_dev(hdev) < 0) {
	524	BT_ERR("Can't register HCI device");
	525	info->hdev = NULL;
	526	hci_free_dev(hdev);
	527	return -ENODEV;
	528	}
	529
	530	return 0;
	531	}
	532
	533
	534	static int dtl1_close(dtl1_info_t *info)
	535	{
	536	unsigned long flags;
fd238232	537	unsigned int iobase = info->p_dev->io.BasePort1;
1da177e4 LT	538	struct hci_dev *hdev = info->hdev;
	539
	540	if (!hdev)
	541	return -ENODEV;
	542
	543	dtl1_hci_close(hdev);
	544
	545	spin_lock_irqsave(&(info->lock), flags);
	546
	547	/* Reset UART */
	548	outb(0, iobase + UART_MCR);
	549
	550	/* Turn off interrupts */
	551	outb(0, iobase + UART_IER);
	552
	553	spin_unlock_irqrestore(&(info->lock), flags);
	554
	555	if (hci_unregister_dev(hdev) < 0)
	556	BT_ERR("Can't unregister HCI device %s", hdev->name);
	557
	558	hci_free_dev(hdev);
	559
	560	return 0;
	561	}
	562
15b99ac1	563	static int dtl1_probe(struct pcmcia_device *link)
1da177e4 LT	564	{
1da177e4 LT	565	dtl1_info_t *info;
1da177e4 LT	566
1da177e4 LT	567	/* Create new info device */
089b1dbb	568	info = kzalloc(sizeof(*info), GFP_KERNEL);
1da177e4	569	if (!info)
f8cfa618	570	return -ENOMEM;
1da177e4	571
fba395ee	572	info->p_dev = link;
1da177e4 LT	573	link->priv = info;
	574
	575	link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
	576	link->io.NumPorts1 = 8;
1da177e4 LT	577
1da177e4 LT	578	link->conf.Attributes = CONF_ENABLE_IRQ;
1da177e4 LT	579	link->conf.IntType = INT_MEMORY_AND_IO;
1da177e4 LT	580
15b99ac1	581	return dtl1_config(link);
1da177e4 LT	582	}
	583
	584
fba395ee	585	static void dtl1_detach(struct pcmcia_device *link)
1da177e4 LT	586	{
1da177e4 LT	587	dtl1_info_t *info = link->priv;
1da177e4	588
e2d40963	589	dtl1_release(link);
1da177e4	590
1da177e4 LT	591	kfree(info);
	592	}
	593
ed58872a DB	594	static int dtl1_confcheck(struct pcmcia_device *p_dev,
ed58872a DB	595	cistpl_cftable_entry_t *cf,
8e2fc39d	596	cistpl_cftable_entry_t *dflt,
ad913c11	597	unsigned int vcc,
ed58872a	598	void *priv_data)
1da177e4	599	{
ed58872a	600	if ((cf->io.nwin == 1) && (cf->io.win[0].len > 8)) {
ed58872a DB	601	p_dev->io.BasePort1 = cf->io.win[0].base;
	602	p_dev->io.NumPorts1 = cf->io.win[0].len; /yo /
	603	p_dev->io.IOAddrLines = cf->io.flags & CISTPL_IO_LINES_MASK;
	604	if (!pcmcia_request_io(p_dev, &p_dev->io))
	605	return 0;
	606	}
	607	return -ENODEV;
1da177e4 LT	608	}
1da177e4 LT	609
15b99ac1	610	static int dtl1_config(struct pcmcia_device *link)
1da177e4	611	{
1da177e4	612	dtl1_info_t *info = link->priv;
af2b3b50	613	int i;
1da177e4	614
1da177e4 LT	615	/* Look for a generic full-sized window */
1da177e4 LT	616	link->io.NumPorts1 = 8;
cb6dbd79	617	if (pcmcia_loop_config(link, dtl1_confcheck, NULL) < 0)
1da177e4	618	goto failed;
1da177e4	619
eb14120f	620	i = pcmcia_request_irq(link, dtl1_interrupt);
9ac3e58c	621	if (i != 0)
eb14120f	622	goto failed;
1da177e4	623
fba395ee	624	i = pcmcia_request_configuration(link, &link->conf);
9ac3e58c	625	if (i != 0)
1da177e4	626	goto failed;
1da177e4 LT	627
	628	if (dtl1_open(info) != 0)
	629	goto failed;
	630
15b99ac1	631	return 0;
1da177e4	632
1da177e4 LT	633	failed:
1da177e4 LT	634	dtl1_release(link);
15b99ac1	635	return -ENODEV;
1da177e4 LT	636	}
	637
	638
fba395ee	639	static void dtl1_release(struct pcmcia_device *link)
1da177e4 LT	640	{
	641	dtl1_info_t *info = link->priv;
	642
e2d40963	643	dtl1_close(info);
1da177e4	644
fba395ee	645	pcmcia_disable_device(link);
1da177e4 LT	646	}
1da177e4 LT	647
1da177e4	648
88eca2e5 DB	649	static struct pcmcia_device_id dtl1_ids[] = {
88eca2e5 DB	650	PCMCIA_DEVICE_PROD_ID12("Nokia Mobile Phones", "DTL-1", 0xe1bfdd64, 0xe168480d),
8602b4fe	651	PCMCIA_DEVICE_PROD_ID12("Nokia Mobile Phones", "DTL-4", 0xe1bfdd64, 0x9102bc82),
88eca2e5	652	PCMCIA_DEVICE_PROD_ID12("Socket", "CF", 0xb38bcc2e, 0x44ebf863),
725a6abf	653	PCMCIA_DEVICE_PROD_ID12("Socket", "CF+ Personal Network Card", 0xb38bcc2e, 0xe732bae3),
88eca2e5 DB	654	PCMCIA_DEVICE_NULL
	655	};
	656	MODULE_DEVICE_TABLE(pcmcia, dtl1_ids);
	657
1da177e4 LT	658	static struct pcmcia_driver dtl1_driver = {
	659	.owner = THIS_MODULE,
	660	.drv = {
	661	.name = "dtl1_cs",
	662	},
15b99ac1	663	.probe = dtl1_probe,
cc3b4866	664	.remove = dtl1_detach,
88eca2e5	665	.id_table = dtl1_ids,
1da177e4 LT	666	};
	667
	668	static int __init init_dtl1_cs(void)
	669	{
	670	return pcmcia_register_driver(&dtl1_driver);
	671	}
	672
	673
	674	static void __exit exit_dtl1_cs(void)
	675	{
	676	pcmcia_unregister_driver(&dtl1_driver);
1da177e4 LT	677	}
	678
	679	module_init(init_dtl1_cs);
	680	module_exit(exit_dtl1_cs);