URL https://opencores.org/ocsvn/test_project/test_project/trunk

Subversion Repositories test_project

[/] [test_project/] [trunk/] [linux_sd_driver/] [drivers/] [bluetooth/] [btuart_cs.c] - Blame information for rev 67

Go to most recent revision | Details | Compare with Previous | View Log


/*
 *
 *  Driver for Bluetooth PCMCIA cards with HCI UART interface
 *
 *  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 Bluetooth PCMCIA cards with HCI UART interface");
MODULE_LICENSE("GPL");
 
 
 
/* ======================== Local structures ======================== */
 
 
typedef struct btuart_info_t {
        struct pcmcia_device *p_dev;
        dev_node_t node;
 
        struct hci_dev *hdev;
 
        spinlock_t lock;        /* For serializing operations */
 
        struct sk_buff_head txq;
        unsigned long tx_state;
 
        unsigned long rx_state;
        unsigned long rx_count;
        struct sk_buff *rx_skb;
} btuart_info_t;
 
 
static int btuart_config(struct pcmcia_device *link);
static void btuart_release(struct pcmcia_device *link);
 
static void btuart_detach(struct pcmcia_device *p_dev);
 
 
/* Maximum baud rate */
#define SPEED_MAX  115200
 
/* Default baud rate: 57600, 115200, 230400 or 460800 */
#define DEFAULT_BAUD_RATE  115200
 
 
/* Transmit states  */
#define XMIT_SENDING    1
#define XMIT_WAKEUP     2
#define XMIT_WAITING    8
 
/* Receiver states */
#define RECV_WAIT_PACKET_TYPE   0
#define RECV_WAIT_EVENT_HEADER  1
#define RECV_WAIT_ACL_HEADER    2
#define RECV_WAIT_SCO_HEADER    3
#define RECV_WAIT_DATA          4
 
 
 
/* ======================== Interrupt handling ======================== */
 
 
static int btuart_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 btuart_write_wakeup(btuart_info_t *info)
{
        if (!info) {
                BT_ERR("Unknown device");
                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 = btuart_write(iobase, 16, skb->data, skb->len);
                set_bit(XMIT_WAKEUP, &(info->tx_state));
 
                if (len == skb->len) {
                        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 btuart_receive(btuart_info_t *info)
{
        unsigned int iobase;
        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) {
                        info->rx_state = RECV_WAIT_PACKET_TYPE;
                        info->rx_count = 0;
                        if (!(info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
                                BT_ERR("Can't allocate mem for new packet");
                                return;
                        }
                }
 
                if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
 
                        info->rx_skb->dev = (void *) info->hdev;
                        bt_cb(info->rx_skb)->pkt_type = inb(iobase + UART_RX);
 
                        switch (bt_cb(info->rx_skb)->pkt_type) {
 
                        case HCI_EVENT_PKT:
                                info->rx_state = RECV_WAIT_EVENT_HEADER;
                                info->rx_count = HCI_EVENT_HDR_SIZE;
                                break;
 
                        case HCI_ACLDATA_PKT:
                                info->rx_state = RECV_WAIT_ACL_HEADER;
                                info->rx_count = HCI_ACL_HDR_SIZE;
                                break;
 
                        case HCI_SCODATA_PKT:
                                info->rx_state = RECV_WAIT_SCO_HEADER;
                                info->rx_count = HCI_SCO_HDR_SIZE;
                                break;
 
                        default:
                                /* Unknown packet */
                                BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type);
                                info->hdev->stat.err_rx++;
                                clear_bit(HCI_RUNNING, &(info->hdev->flags));
 
                                kfree_skb(info->rx_skb);
                                info->rx_skb = NULL;
                                break;
 
                        }
 
                } else {
 
                        *skb_put(info->rx_skb, 1) = inb(iobase + UART_RX);
                        info->rx_count--;
 
                        if (info->rx_count == 0) {
 
                                int dlen;
                                struct hci_event_hdr *eh;
                                struct hci_acl_hdr *ah;
                                struct hci_sco_hdr *sh;
 
 
                                switch (info->rx_state) {
 
                                case RECV_WAIT_EVENT_HEADER:
                                        eh = hci_event_hdr(info->rx_skb);
                                        info->rx_state = RECV_WAIT_DATA;
                                        info->rx_count = eh->plen;
                                        break;
 
                                case RECV_WAIT_ACL_HEADER:
                                        ah = hci_acl_hdr(info->rx_skb);
                                        dlen = __le16_to_cpu(ah->dlen);
                                        info->rx_state = RECV_WAIT_DATA;
                                        info->rx_count = dlen;
                                        break;
 
                                case RECV_WAIT_SCO_HEADER:
                                        sh = hci_sco_hdr(info->rx_skb);
                                        info->rx_state = RECV_WAIT_DATA;
                                        info->rx_count = sh->dlen;
                                        break;
 
                                case RECV_WAIT_DATA:
                                        hci_recv_frame(info->rx_skb);
                                        info->rx_skb = NULL;
                                        break;
 
                                }
 
                        }
 
                }
 
                /* Make sure we don't stay here too long */
                if (boguscount++ > 16)
                        break;
 
        } while (inb(iobase + UART_LSR) & UART_LSR_DR);
}
 
 
static irqreturn_t btuart_interrupt(int irq, void *dev_inst)
{
        btuart_info_t *info = dev_inst;
        unsigned int iobase;
        int boguscount = 0;
        int iir, lsr;
 
        BUG_ON(!info->hdev);
 
        iobase = info->p_dev->io.BasePort1;
 
        spin_lock(&(info->lock));
 
        iir = inb(iobase + UART_IIR) & UART_IIR_ID;
        while (iir) {
 
                /* Clear interrupt */
                lsr = inb(iobase + UART_LSR);
 
                switch (iir) {
                case UART_IIR_RLSI:
                        BT_ERR("RLSI");
                        break;
                case UART_IIR_RDI:
                        /* Receive interrupt */
                        btuart_receive(info);
                        break;
                case UART_IIR_THRI:
                        if (lsr & UART_LSR_THRE) {
                                /* Transmitter ready for data */
                                btuart_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;
 
        }
 
        spin_unlock(&(info->lock));
 
        return IRQ_HANDLED;
}
 
 
static void btuart_change_speed(btuart_info_t *info, unsigned int speed)
{
        unsigned long flags;
        unsigned int iobase;
        int fcr;                /* FIFO control reg */
        int lcr;                /* Line control reg */
        int divisor;
 
        if (!info) {
                BT_ERR("Unknown device");
                return;
        }
 
        iobase = info->p_dev->io.BasePort1;
 
        spin_lock_irqsave(&(info->lock), flags);
 
        /* Turn off interrupts */
        outb(0, iobase + UART_IER);
 
        divisor = SPEED_MAX / speed;
 
        fcr = UART_FCR_ENABLE_FIFO | UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT;
 
        /*
         * Use trigger level 1 to avoid 3 ms. timeout delay at 9600 bps, and
         * almost 1,7 ms at 19200 bps. At speeds above that we can just forget
         * about this timeout since it will always be fast enough.
         */
 
        if (speed < 38400)
                fcr |= UART_FCR_TRIGGER_1;
        else
                fcr |= UART_FCR_TRIGGER_14;
 
        /* Bluetooth cards use 8N1 */
        lcr = UART_LCR_WLEN8;
 
        outb(UART_LCR_DLAB | lcr, iobase + UART_LCR);   /* Set DLAB */
        outb(divisor & 0xff, iobase + UART_DLL);        /* Set speed */
        outb(divisor >> 8, iobase + UART_DLM);
        outb(lcr, iobase + UART_LCR);   /* Set 8N1  */
        outb(fcr, iobase + UART_FCR);   /* Enable FIFO's */
 
        /* Turn on interrups */
        outb(UART_IER_RLSI | UART_IER_RDI | UART_IER_THRI, iobase + UART_IER);
 
        spin_unlock_irqrestore(&(info->lock), flags);
}
 
 
 
/* ======================== HCI interface ======================== */
 
 
static int btuart_hci_flush(struct hci_dev *hdev)
{
        btuart_info_t *info = (btuart_info_t *)(hdev->driver_data);
 
        /* Drop TX queue */
        skb_queue_purge(&(info->txq));
 
        return 0;
}
 
 
static int btuart_hci_open(struct hci_dev *hdev)
{
        set_bit(HCI_RUNNING, &(hdev->flags));
 
        return 0;
}
 
 
static int btuart_hci_close(struct hci_dev *hdev)
{
        if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
                return 0;
 
        btuart_hci_flush(hdev);
 
        return 0;
}
 
 
static int btuart_hci_send_frame(struct sk_buff *skb)
{
        btuart_info_t *info;
        struct hci_dev *hdev = (struct hci_dev *)(skb->dev);
 
        if (!hdev) {
                BT_ERR("Frame for unknown HCI device (hdev=NULL)");
                return -ENODEV;
        }
 
        info = (btuart_info_t *)(hdev->driver_data);
 
        switch (bt_cb(skb)->pkt_type) {
        case HCI_COMMAND_PKT:
                hdev->stat.cmd_tx++;
                break;
        case HCI_ACLDATA_PKT:
                hdev->stat.acl_tx++;
                break;
        case HCI_SCODATA_PKT:
                hdev->stat.sco_tx++;
                break;
        };
 
        /* Prepend skb with frame type */
        memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
        skb_queue_tail(&(info->txq), skb);
 
        btuart_write_wakeup(info);
 
        return 0;
}
 
 
static void btuart_hci_destruct(struct hci_dev *hdev)
{
}
 
 
static int btuart_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
{
        return -ENOIOCTLCMD;
}
 
 
 
/* ======================== Card services HCI interaction ======================== */
 
 
static int btuart_open(btuart_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_PACKET_TYPE;
        info->rx_count = 0;
        info->rx_skb = NULL;
 
        /* Initialize HCI device */
        hdev = hci_alloc_dev();
        if (!hdev) {
                BT_ERR("Can't allocate HCI device");
                return -ENOMEM;
        }
 
        info->hdev = hdev;
 
        hdev->type = HCI_PCCARD;
        hdev->driver_data = info;
        SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
 
        hdev->open     = btuart_hci_open;
        hdev->close    = btuart_hci_close;
        hdev->flush    = btuart_hci_flush;
        hdev->send     = btuart_hci_send_frame;
        hdev->destruct = btuart_hci_destruct;
        hdev->ioctl    = btuart_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);
 
        /* Turn on interrupts */
        // outb(UART_IER_RLSI | UART_IER_RDI | UART_IER_THRI, iobase + UART_IER);
 
        spin_unlock_irqrestore(&(info->lock), flags);
 
        btuart_change_speed(info, DEFAULT_BAUD_RATE);
 
        /* Timeout before it is safe to send the first HCI packet */
        msleep(1000);
 
        /* 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 btuart_close(btuart_info_t *info)
{
        unsigned long flags;
        unsigned int iobase = info->p_dev->io.BasePort1;
        struct hci_dev *hdev = info->hdev;
 
        if (!hdev)
                return -ENODEV;
 
        btuart_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 btuart_probe(struct pcmcia_device *link)
{
        btuart_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->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
        link->irq.IRQInfo1 = IRQ_LEVEL_ID;
 
        link->irq.Handler = btuart_interrupt;
        link->irq.Instance = info;
 
        link->conf.Attributes = CONF_ENABLE_IRQ;
        link->conf.IntType = INT_MEMORY_AND_IO;
 
        return btuart_config(link);
}
 
 
static void btuart_detach(struct pcmcia_device *link)
{
        btuart_info_t *info = link->priv;
 
        btuart_release(link);
        kfree(info);
}
 
static int get_tuple(struct pcmcia_device *handle, tuple_t *tuple, cisparse_t *parse)
{
        int i;
 
        i = pcmcia_get_tuple_data(handle, tuple);
        if (i != CS_SUCCESS)
                return i;
 
        return pcmcia_parse_tuple(handle, tuple, parse);
}
 
static int first_tuple(struct pcmcia_device *handle, tuple_t *tuple, cisparse_t *parse)
{
        if (pcmcia_get_first_tuple(handle, tuple) != CS_SUCCESS)
                return CS_NO_MORE_ITEMS;
        return get_tuple(handle, tuple, parse);
}
 
static int next_tuple(struct pcmcia_device *handle, tuple_t *tuple, cisparse_t *parse)
{
        if (pcmcia_get_next_tuple(handle, tuple) != CS_SUCCESS)
                return CS_NO_MORE_ITEMS;
        return get_tuple(handle, tuple, parse);
}
 
static int btuart_config(struct pcmcia_device *link)
{
        static kio_addr_t base[5] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8, 0x0 };
        btuart_info_t *info = link->priv;
        tuple_t tuple;
        u_short buf[256];
        cisparse_t parse;
        cistpl_cftable_entry_t *cf = &parse.cftable_entry;
        int i, j, try;
 
        /* First pass: look for a config entry that looks normal. */
        tuple.TupleData = (cisdata_t *) buf;
        tuple.TupleOffset = 0;
        tuple.TupleDataMax = 255;
        tuple.Attributes = 0;
        tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
        /* Two tries: without IO aliases, then with aliases */
        for (try = 0; try < 2; try++) {
                i = first_tuple(link, &tuple, &parse);
                while (i != CS_NO_MORE_ITEMS) {
                        if (i != CS_SUCCESS)
                                goto next_entry;
                        if (cf->vpp1.present & (1 << CISTPL_POWER_VNOM))
                                link->conf.Vpp = cf->vpp1.param[CISTPL_POWER_VNOM] / 10000;
                        if ((cf->io.nwin > 0) && (cf->io.win[0].len == 8) && (cf->io.win[0].base != 0)) {
                                link->conf.ConfigIndex = cf->index;
                                link->io.BasePort1 = cf->io.win[0].base;
                                link->io.IOAddrLines = (try == 0) ? 16 : cf->io.flags & CISTPL_IO_LINES_MASK;
                                i = pcmcia_request_io(link, &link->io);
                                if (i == CS_SUCCESS)
                                        goto found_port;
                        }
next_entry:
                        i = next_tuple(link, &tuple, &parse);
                }
        }
 
        /* Second pass: try to find an entry that isn't picky about
           its base address, then try to grab any standard serial port
           address, and finally try to get any free port. */
        i = first_tuple(link, &tuple, &parse);
        while (i != CS_NO_MORE_ITEMS) {
                if ((i == CS_SUCCESS) && (cf->io.nwin > 0)
                    && ((cf->io.flags & CISTPL_IO_LINES_MASK) <= 3)) {
                        link->conf.ConfigIndex = cf->index;
                        for (j = 0; j < 5; j++) {
                                link->io.BasePort1 = base[j];
                                link->io.IOAddrLines = base[j] ? 16 : 3;
                                i = pcmcia_request_io(link, &link->io);
                                if (i == CS_SUCCESS)
                                        goto found_port;
                        }
                }
                i = next_tuple(link, &tuple, &parse);
        }
 
found_port:
        if (i != CS_SUCCESS) {
                BT_ERR("No usable port range found");
                cs_error(link, RequestIO, i);
                goto failed;
        }
 
        i = pcmcia_request_irq(link, &link->irq);
        if (i != CS_SUCCESS) {
                cs_error(link, RequestIRQ, i);
                link->irq.AssignedIRQ = 0;
        }
 
        i = pcmcia_request_configuration(link, &link->conf);
        if (i != CS_SUCCESS) {
                cs_error(link, RequestConfiguration, i);
                goto failed;
        }
 
        if (btuart_open(info) != 0)
                goto failed;
 
        strcpy(info->node.dev_name, info->hdev->name);
        link->dev_node = &info->node;
 
        return 0;
 
failed:
        btuart_release(link);
        return -ENODEV;
}
 
 
static void btuart_release(struct pcmcia_device *link)
{
        btuart_info_t *info = link->priv;
 
        btuart_close(info);
 
        pcmcia_disable_device(link);
}
 
static struct pcmcia_device_id btuart_ids[] = {
        /* don't use this driver. Use serial_cs + hci_uart instead */
        PCMCIA_DEVICE_NULL
};
MODULE_DEVICE_TABLE(pcmcia, btuart_ids);
 
static struct pcmcia_driver btuart_driver = {
        .owner          = THIS_MODULE,
        .drv            = {
                .name   = "btuart_cs",
        },
        .probe          = btuart_probe,
        .remove         = btuart_detach,
        .id_table       = btuart_ids,
};
 
static int __init init_btuart_cs(void)
{
        return pcmcia_register_driver(&btuart_driver);
}
 
 
static void __exit exit_btuart_cs(void)
{
        pcmcia_unregister_driver(&btuart_driver);
}
 
module_init(init_btuart_cs);
module_exit(exit_btuart_cs);

Browse

Tools

Subversion Repositories test_project

[/] [test_project/] [trunk/] [linux_sd_driver/] [drivers/] [bluetooth/] [btuart_cs.c] - Blame information for rev 67

Line No.	Rev	Author	Line
1	62	marcus.erl	`/*`
2			`*`
3			`* Driver for Bluetooth PCMCIA cards with HCI UART interface`
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
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>`
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
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 Bluetooth PCMCIA cards with HCI UART interface");`
61			`MODULE_LICENSE("GPL");`
62
63
64
65			`/* ======================== Local structures ======================== */`
66
67
68			`typedef struct btuart_info_t {`
69			`struct pcmcia_device *p_dev;`
70			`dev_node_t node;`
71
72			`struct hci_dev *hdev;`
73
74			`spinlock_t lock; /* For serializing operations */`
75
76			`struct sk_buff_head txq;`
77			`unsigned long tx_state;`
78
79			`unsigned long rx_state;`
80			`unsigned long rx_count;`
81			`struct sk_buff *rx_skb;`
82			`} btuart_info_t;`
83
84
85			`static int btuart_config(struct pcmcia_device *link);`
86			`static void btuart_release(struct pcmcia_device *link);`
87
88			`static void btuart_detach(struct pcmcia_device *p_dev);`
89
90
91			`/* Maximum baud rate */`
92			`#define SPEED_MAX 115200`
93
94			`/* Default baud rate: 57600, 115200, 230400 or 460800 */`
95			`#define DEFAULT_BAUD_RATE 115200`
96
97
98			`/* Transmit states */`
99			`#define XMIT_SENDING 1`
100			`#define XMIT_WAKEUP 2`
101			`#define XMIT_WAITING 8`
102
103			`/* Receiver states */`
104			`#define RECV_WAIT_PACKET_TYPE 0`
105			`#define RECV_WAIT_EVENT_HEADER 1`
106			`#define RECV_WAIT_ACL_HEADER 2`
107			`#define RECV_WAIT_SCO_HEADER 3`
108			`#define RECV_WAIT_DATA 4`
109
110
111
112			`/* ======================== Interrupt handling ======================== */`
113
114
115			`static int btuart_write(unsigned int iobase, int fifo_size, __u8 *buf, int len)`
116			`{`
117			`int actual = 0;`
118
119			`/* Tx FIFO should be empty */`
120			`if (!(inb(iobase + UART_LSR) & UART_LSR_THRE))`
121			`return 0;`
122
123			`/* Fill FIFO with current frame */`
124			`while ((fifo_size-- > 0) && (actual < len)) {`
125			`/* Transmit next byte */`
126			`outb(buf[actual], iobase + UART_TX);`
127			`actual++;`
128			`}`
129
130			`return actual;`
131			`}`
132
133
134			`static void btuart_write_wakeup(btuart_info_t *info)`
135			`{`
136			`if (!info) {`
137			`BT_ERR("Unknown device");`
138			`return;`
139			`}`
140
141			`if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) {`
142			`set_bit(XMIT_WAKEUP, &(info->tx_state));`
143			`return;`
144			`}`
145
146			`do {`
147			`register unsigned int iobase = info->p_dev->io.BasePort1;`
148			`register struct sk_buff *skb;`
149			`register int len;`
150
151			`clear_bit(XMIT_WAKEUP, &(info->tx_state));`
152
153			`if (!pcmcia_dev_present(info->p_dev))`
154			`return;`
155
156			`if (!(skb = skb_dequeue(&(info->txq))))`
157			`break;`
158
159			`/* Send frame */`
160			`len = btuart_write(iobase, 16, skb->data, skb->len);`
161			`set_bit(XMIT_WAKEUP, &(info->tx_state));`
162
163			`if (len == skb->len) {`
164			`kfree_skb(skb);`
165			`} else {`
166			`skb_pull(skb, len);`
167			`skb_queue_head(&(info->txq), skb);`
168			`}`
169
170			`info->hdev->stat.byte_tx += len;`
171
172			`} while (test_bit(XMIT_WAKEUP, &(info->tx_state)));`
173
174			`clear_bit(XMIT_SENDING, &(info->tx_state));`
175			`}`
176
177
178			`static void btuart_receive(btuart_info_t *info)`
179			`{`
180			`unsigned int iobase;`
181			`int boguscount = 0;`
182
183			`if (!info) {`
184			`BT_ERR("Unknown device");`
185			`return;`
186			`}`
187
188			`iobase = info->p_dev->io.BasePort1;`
189
190			`do {`
191			`info->hdev->stat.byte_rx++;`
192
193			`/* Allocate packet */`
194			`if (info->rx_skb == NULL) {`
195			`info->rx_state = RECV_WAIT_PACKET_TYPE;`
196			`info->rx_count = 0;`
197			`if (!(info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {`
198			`BT_ERR("Can't allocate mem for new packet");`
199			`return;`
200			`}`
201			`}`
202
203			`if (info->rx_state == RECV_WAIT_PACKET_TYPE) {`
204
205			`info->rx_skb->dev = (void *) info->hdev;`
206			`bt_cb(info->rx_skb)->pkt_type = inb(iobase + UART_RX);`
207
208			`switch (bt_cb(info->rx_skb)->pkt_type) {`
209
210			`case HCI_EVENT_PKT:`
211			`info->rx_state = RECV_WAIT_EVENT_HEADER;`
212			`info->rx_count = HCI_EVENT_HDR_SIZE;`
213			`break;`
214
215			`case HCI_ACLDATA_PKT:`
216			`info->rx_state = RECV_WAIT_ACL_HEADER;`
217			`info->rx_count = HCI_ACL_HDR_SIZE;`
218			`break;`
219
220			`case HCI_SCODATA_PKT:`
221			`info->rx_state = RECV_WAIT_SCO_HEADER;`
222			`info->rx_count = HCI_SCO_HDR_SIZE;`
223			`break;`
224
225			`default:`
226			`/* Unknown packet */`
227			`BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type);`
228			`info->hdev->stat.err_rx++;`
229			`clear_bit(HCI_RUNNING, &(info->hdev->flags));`
230
231			`kfree_skb(info->rx_skb);`
232			`info->rx_skb = NULL;`
233			`break;`
234
235			`}`
236
237			`} else {`
238
239			`*skb_put(info->rx_skb, 1) = inb(iobase + UART_RX);`
240			`info->rx_count--;`
241
242			`if (info->rx_count == 0) {`
243
244			`int dlen;`
245			`struct hci_event_hdr *eh;`
246			`struct hci_acl_hdr *ah;`
247			`struct hci_sco_hdr *sh;`
248
249
250			`switch (info->rx_state) {`
251
252			`case RECV_WAIT_EVENT_HEADER:`
253			`eh = hci_event_hdr(info->rx_skb);`
254			`info->rx_state = RECV_WAIT_DATA;`
255			`info->rx_count = eh->plen;`
256			`break;`
257
258			`case RECV_WAIT_ACL_HEADER:`
259			`ah = hci_acl_hdr(info->rx_skb);`
260			`dlen = __le16_to_cpu(ah->dlen);`
261			`info->rx_state = RECV_WAIT_DATA;`
262			`info->rx_count = dlen;`
263			`break;`
264
265			`case RECV_WAIT_SCO_HEADER:`
266			`sh = hci_sco_hdr(info->rx_skb);`
267			`info->rx_state = RECV_WAIT_DATA;`
268			`info->rx_count = sh->dlen;`
269			`break;`
270
271			`case RECV_WAIT_DATA:`
272			`hci_recv_frame(info->rx_skb);`
273			`info->rx_skb = NULL;`
274			`break;`
275
276			`}`
277
278			`}`
279
280			`}`
281
282			`/* Make sure we don't stay here too long */`
283			`if (boguscount++ > 16)`
284			`break;`
285
286			`} while (inb(iobase + UART_LSR) & UART_LSR_DR);`
287			`}`
288
289
290			`static irqreturn_t btuart_interrupt(int irq, void *dev_inst)`
291			`{`
292			`btuart_info_t *info = dev_inst;`
293			`unsigned int iobase;`
294			`int boguscount = 0;`
295			`int iir, lsr;`
296
297			`BUG_ON(!info->hdev);`
298
299			`iobase = info->p_dev->io.BasePort1;`
300
301			`spin_lock(&(info->lock));`
302
303			`iir = inb(iobase + UART_IIR) & UART_IIR_ID;`
304			`while (iir) {`
305
306			`/* Clear interrupt */`
307			`lsr = inb(iobase + UART_LSR);`
308
309			`switch (iir) {`
310			`case UART_IIR_RLSI:`
311			`BT_ERR("RLSI");`
312			`break;`
313			`case UART_IIR_RDI:`
314			`/* Receive interrupt */`
315			`btuart_receive(info);`
316			`break;`
317			`case UART_IIR_THRI:`
318			`if (lsr & UART_LSR_THRE) {`
319			`/* Transmitter ready for data */`
320			`btuart_write_wakeup(info);`
321			`}`
322			`break;`
323			`default:`
324			`BT_ERR("Unhandled IIR=%#x", iir);`
325			`break;`
326			`}`
327
328			`/* Make sure we don't stay here too long */`
329			`if (boguscount++ > 100)`
330			`break;`
331
332			`iir = inb(iobase + UART_IIR) & UART_IIR_ID;`
333
334			`}`
335
336			`spin_unlock(&(info->lock));`
337
338			`return IRQ_HANDLED;`
339			`}`
340
341
342			`static void btuart_change_speed(btuart_info_t *info, unsigned int speed)`
343			`{`
344			`unsigned long flags;`
345			`unsigned int iobase;`
346			`int fcr; /* FIFO control reg */`
347			`int lcr; /* Line control reg */`
348			`int divisor;`
349
350			`if (!info) {`
351			`BT_ERR("Unknown device");`
352			`return;`
353			`}`
354
355			`iobase = info->p_dev->io.BasePort1;`
356
357			`spin_lock_irqsave(&(info->lock), flags);`
358
359			`/* Turn off interrupts */`
360			`outb(0, iobase + UART_IER);`
361
362			`divisor = SPEED_MAX / speed;`
363
364			`fcr = UART_FCR_ENABLE_FIFO \| UART_FCR_CLEAR_RCVR \| UART_FCR_CLEAR_XMIT;`
365
366			`/*`
367			`* Use trigger level 1 to avoid 3 ms. timeout delay at 9600 bps, and`
368			`* almost 1,7 ms at 19200 bps. At speeds above that we can just forget`
369			`* about this timeout since it will always be fast enough.`
370			`*/`
371
372			`if (speed < 38400)`
373			`fcr \|= UART_FCR_TRIGGER_1;`
374			`else`
375			`fcr \|= UART_FCR_TRIGGER_14;`
376
377			`/* Bluetooth cards use 8N1 */`
378			`lcr = UART_LCR_WLEN8;`
379
380			`outb(UART_LCR_DLAB \| lcr, iobase + UART_LCR); /* Set DLAB */`
381			`outb(divisor & 0xff, iobase + UART_DLL); /* Set speed */`
382			`outb(divisor >> 8, iobase + UART_DLM);`
383			`outb(lcr, iobase + UART_LCR); /* Set 8N1 */`
384			`outb(fcr, iobase + UART_FCR); /* Enable FIFO's */`
385
386			`/* Turn on interrups */`
387			`outb(UART_IER_RLSI \| UART_IER_RDI \| UART_IER_THRI, iobase + UART_IER);`
388
389			`spin_unlock_irqrestore(&(info->lock), flags);`
390			`}`
391
392
393
394			`/* ======================== HCI interface ======================== */`
395
396
397			`static int btuart_hci_flush(struct hci_dev *hdev)`
398			`{`
399			`btuart_info_t info = (btuart_info_t )(hdev->driver_data);`
400
401			`/* Drop TX queue */`
402			`skb_queue_purge(&(info->txq));`
403
404			`return 0;`
405			`}`
406
407
408			`static int btuart_hci_open(struct hci_dev *hdev)`
409			`{`
410			`set_bit(HCI_RUNNING, &(hdev->flags));`
411
412			`return 0;`
413			`}`
414
415
416			`static int btuart_hci_close(struct hci_dev *hdev)`
417			`{`
418			`if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))`
419			`return 0;`
420
421			`btuart_hci_flush(hdev);`
422
423			`return 0;`
424			`}`
425
426
427			`static int btuart_hci_send_frame(struct sk_buff *skb)`
428			`{`
429			`btuart_info_t *info;`
430			`struct hci_dev hdev = (struct hci_dev )(skb->dev);`
431
432			`if (!hdev) {`
433			`BT_ERR("Frame for unknown HCI device (hdev=NULL)");`
434			`return -ENODEV;`
435			`}`
436
437			`info = (btuart_info_t *)(hdev->driver_data);`
438
439			`switch (bt_cb(skb)->pkt_type) {`
440			`case HCI_COMMAND_PKT:`
441			`hdev->stat.cmd_tx++;`
442			`break;`
443			`case HCI_ACLDATA_PKT:`
444			`hdev->stat.acl_tx++;`
445			`break;`
446			`case HCI_SCODATA_PKT:`
447			`hdev->stat.sco_tx++;`
448			`break;`
449			`};`
450
451			`/* Prepend skb with frame type */`
452			`memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);`
453			`skb_queue_tail(&(info->txq), skb);`
454
455			`btuart_write_wakeup(info);`
456
457			`return 0;`
458			`}`
459
460
461			`static void btuart_hci_destruct(struct hci_dev *hdev)`
462			`{`
463			`}`
464
465
466			`static int btuart_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)`
467			`{`
468			`return -ENOIOCTLCMD;`
469			`}`
470
471
472
473			`/* ======================== Card services HCI interaction ======================== */`
474
475
476			`static int btuart_open(btuart_info_t *info)`
477			`{`
478			`unsigned long flags;`
479			`unsigned int iobase = info->p_dev->io.BasePort1;`
480			`struct hci_dev *hdev;`
481
482			`spin_lock_init(&(info->lock));`
483
484			`skb_queue_head_init(&(info->txq));`
485
486			`info->rx_state = RECV_WAIT_PACKET_TYPE;`
487			`info->rx_count = 0;`
488			`info->rx_skb = NULL;`
489
490			`/* Initialize HCI device */`
491			`hdev = hci_alloc_dev();`
492			`if (!hdev) {`
493			`BT_ERR("Can't allocate HCI device");`
494			`return -ENOMEM;`
495			`}`
496
497			`info->hdev = hdev;`
498
499			`hdev->type = HCI_PCCARD;`
500			`hdev->driver_data = info;`
501			`SET_HCIDEV_DEV(hdev, &info->p_dev->dev);`
502
503			`hdev->open = btuart_hci_open;`
504			`hdev->close = btuart_hci_close;`
505			`hdev->flush = btuart_hci_flush;`
506			`hdev->send = btuart_hci_send_frame;`
507			`hdev->destruct = btuart_hci_destruct;`
508			`hdev->ioctl = btuart_hci_ioctl;`
509
510			`hdev->owner = THIS_MODULE;`
511
512			`spin_lock_irqsave(&(info->lock), flags);`
513
514			`/* Reset UART */`
515			`outb(0, iobase + UART_MCR);`
516
517			`/* Turn off interrupts */`
518			`outb(0, iobase + UART_IER);`
519
520			`/* Initialize UART */`
521			`outb(UART_LCR_WLEN8, iobase + UART_LCR); /* Reset DLAB */`
522			`outb((UART_MCR_DTR \| UART_MCR_RTS \| UART_MCR_OUT2), iobase + UART_MCR);`
523
524			`/* Turn on interrupts */`
525			`// outb(UART_IER_RLSI \| UART_IER_RDI \| UART_IER_THRI, iobase + UART_IER);`
526
527			`spin_unlock_irqrestore(&(info->lock), flags);`
528
529			`btuart_change_speed(info, DEFAULT_BAUD_RATE);`
530
531			`/* Timeout before it is safe to send the first HCI packet */`
532			`msleep(1000);`
533
534			`/* Register HCI device */`
535			`if (hci_register_dev(hdev) < 0) {`
536			`BT_ERR("Can't register HCI device");`
537			`info->hdev = NULL;`
538			`hci_free_dev(hdev);`
539			`return -ENODEV;`
540			`}`
541
542			`return 0;`
543			`}`
544
545
546			`static int btuart_close(btuart_info_t *info)`
547			`{`
548			`unsigned long flags;`
549			`unsigned int iobase = info->p_dev->io.BasePort1;`
550			`struct hci_dev *hdev = info->hdev;`
551
552			`if (!hdev)`
553			`return -ENODEV;`
554
555			`btuart_hci_close(hdev);`
556
557			`spin_lock_irqsave(&(info->lock), flags);`
558
559			`/* Reset UART */`
560			`outb(0, iobase + UART_MCR);`
561
562			`/* Turn off interrupts */`
563			`outb(0, iobase + UART_IER);`
564
565			`spin_unlock_irqrestore(&(info->lock), flags);`
566
567			`if (hci_unregister_dev(hdev) < 0)`
568			`BT_ERR("Can't unregister HCI device %s", hdev->name);`
569
570			`hci_free_dev(hdev);`
571
572			`return 0;`
573			`}`
574
575			`static int btuart_probe(struct pcmcia_device *link)`
576			`{`
577			`btuart_info_t *info;`
578
579			`/* Create new info device */`
580			`info = kzalloc(sizeof(*info), GFP_KERNEL);`
581			`if (!info)`
582			`return -ENOMEM;`
583
584			`info->p_dev = link;`
585			`link->priv = info;`
586
587			`link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;`
588			`link->io.NumPorts1 = 8;`
589			`link->irq.Attributes = IRQ_TYPE_EXCLUSIVE \| IRQ_HANDLE_PRESENT;`
590			`link->irq.IRQInfo1 = IRQ_LEVEL_ID;`
591
592			`link->irq.Handler = btuart_interrupt;`
593			`link->irq.Instance = info;`
594
595			`link->conf.Attributes = CONF_ENABLE_IRQ;`
596			`link->conf.IntType = INT_MEMORY_AND_IO;`
597
598			`return btuart_config(link);`
599			`}`
600
601
602			`static void btuart_detach(struct pcmcia_device *link)`
603			`{`
604			`btuart_info_t *info = link->priv;`
605
606			`btuart_release(link);`
607			`kfree(info);`
608			`}`
609
610			`static int get_tuple(struct pcmcia_device handle, tuple_t tuple, cisparse_t *parse)`
611			`{`
612			`int i;`
613
614			`i = pcmcia_get_tuple_data(handle, tuple);`
615			`if (i != CS_SUCCESS)`
616			`return i;`
617
618			`return pcmcia_parse_tuple(handle, tuple, parse);`
619			`}`
620
621			`static int first_tuple(struct pcmcia_device handle, tuple_t tuple, cisparse_t *parse)`
622			`{`
623			`if (pcmcia_get_first_tuple(handle, tuple) != CS_SUCCESS)`
624			`return CS_NO_MORE_ITEMS;`
625			`return get_tuple(handle, tuple, parse);`
626			`}`
627
628			`static int next_tuple(struct pcmcia_device handle, tuple_t tuple, cisparse_t *parse)`
629			`{`
630			`if (pcmcia_get_next_tuple(handle, tuple) != CS_SUCCESS)`
631			`return CS_NO_MORE_ITEMS;`
632			`return get_tuple(handle, tuple, parse);`
633			`}`
634
635			`static int btuart_config(struct pcmcia_device *link)`
636			`{`
637			`static kio_addr_t base[5] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8, 0x0 };`
638			`btuart_info_t *info = link->priv;`
639			`tuple_t tuple;`
640			`u_short buf[256];`
641			`cisparse_t parse;`
642			`cistpl_cftable_entry_t *cf = &parse.cftable_entry;`
643			`int i, j, try;`
644
645			`/* First pass: look for a config entry that looks normal. */`
646			`tuple.TupleData = (cisdata_t *) buf;`
647			`tuple.TupleOffset = 0;`
648			`tuple.TupleDataMax = 255;`
649			`tuple.Attributes = 0;`
650			`tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;`
651			`/* Two tries: without IO aliases, then with aliases */`
652			`for (try = 0; try < 2; try++) {`
653			`i = first_tuple(link, &tuple, &parse);`
654			`while (i != CS_NO_MORE_ITEMS) {`
655			`if (i != CS_SUCCESS)`
656			`goto next_entry;`
657			`if (cf->vpp1.present & (1 << CISTPL_POWER_VNOM))`
658			`link->conf.Vpp = cf->vpp1.param[CISTPL_POWER_VNOM] / 10000;`
659			`if ((cf->io.nwin > 0) && (cf->io.win[0].len == 8) && (cf->io.win[0].base != 0)) {`
660			`link->conf.ConfigIndex = cf->index;`
661			`link->io.BasePort1 = cf->io.win[0].base;`
662			`link->io.IOAddrLines = (try == 0) ? 16 : cf->io.flags & CISTPL_IO_LINES_MASK;`
663			`i = pcmcia_request_io(link, &link->io);`
664			`if (i == CS_SUCCESS)`
665			`goto found_port;`
666			`}`
667			`next_entry:`
668			`i = next_tuple(link, &tuple, &parse);`
669			`}`
670			`}`
671
672			`/* Second pass: try to find an entry that isn't picky about`
673			`its base address, then try to grab any standard serial port`
674			`address, and finally try to get any free port. */`
675			`i = first_tuple(link, &tuple, &parse);`
676			`while (i != CS_NO_MORE_ITEMS) {`
677			`if ((i == CS_SUCCESS) && (cf->io.nwin > 0)`
678			`&& ((cf->io.flags & CISTPL_IO_LINES_MASK) <= 3)) {`
679			`link->conf.ConfigIndex = cf->index;`
680			`for (j = 0; j < 5; j++) {`
681			`link->io.BasePort1 = base[j];`
682			`link->io.IOAddrLines = base[j] ? 16 : 3;`
683			`i = pcmcia_request_io(link, &link->io);`
684			`if (i == CS_SUCCESS)`
685			`goto found_port;`
686			`}`
687			`}`
688			`i = next_tuple(link, &tuple, &parse);`
689			`}`
690
691			`found_port:`
692			`if (i != CS_SUCCESS) {`
693			`BT_ERR("No usable port range found");`
694			`cs_error(link, RequestIO, i);`
695			`goto failed;`
696			`}`
697
698			`i = pcmcia_request_irq(link, &link->irq);`
699			`if (i != CS_SUCCESS) {`
700			`cs_error(link, RequestIRQ, i);`
701			`link->irq.AssignedIRQ = 0;`
702			`}`
703
704			`i = pcmcia_request_configuration(link, &link->conf);`
705			`if (i != CS_SUCCESS) {`
706			`cs_error(link, RequestConfiguration, i);`
707			`goto failed;`
708			`}`
709
710			`if (btuart_open(info) != 0)`
711			`goto failed;`
712
713			`strcpy(info->node.dev_name, info->hdev->name);`
714			`link->dev_node = &info->node;`
715
716			`return 0;`
717
718			`failed:`
719			`btuart_release(link);`
720			`return -ENODEV;`
721			`}`
722
723
724			`static void btuart_release(struct pcmcia_device *link)`
725			`{`
726			`btuart_info_t *info = link->priv;`
727
728			`btuart_close(info);`
729
730			`pcmcia_disable_device(link);`
731			`}`
732
733			`static struct pcmcia_device_id btuart_ids[] = {`
734			`/* don't use this driver. Use serial_cs + hci_uart instead */`
735			`PCMCIA_DEVICE_NULL`
736			`};`
737			`MODULE_DEVICE_TABLE(pcmcia, btuart_ids);`
738
739			`static struct pcmcia_driver btuart_driver = {`
740			`.owner = THIS_MODULE,`
741			`.drv = {`
742			`.name = "btuart_cs",`
743			`},`
744			`.probe = btuart_probe,`
745			`.remove = btuart_detach,`
746			`.id_table = btuart_ids,`
747			`};`
748
749			`static int __init init_btuart_cs(void)`
750			`{`
751			`return pcmcia_register_driver(&btuart_driver);`
752			`}`
753
754
755			`static void __exit exit_btuart_cs(void)`
756			`{`
757			`pcmcia_unregister_driver(&btuart_driver);`
758			`}`
759
760			`module_init(init_btuart_cs);`
761			`module_exit(exit_btuart_cs);`