Showing error 536

User: Jiri Slaby
Error type: Calling function from invalid context
Error type description: Some function is called at inappropriate place like sleep inside critical sections or interrupt handlers
File location: drivers/bluetooth/bluecard_cs.c
Line in file: 323
Project: Linux Kernel
Project version: 2.6.28
Tools: Stanse (1.2)
Entered: 2011-11-07 22:19:02 UTC


Source:

  1/*
  2 *
  3 *  Bluetooth driver for the Anycom BlueCard (LSE039/LSE041)
  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/sched.h>
 30#include <linux/delay.h>
 31#include <linux/timer.h>
 32#include <linux/errno.h>
 33#include <linux/ptrace.h>
 34#include <linux/ioport.h>
 35#include <linux/spinlock.h>
 36#include <linux/moduleparam.h>
 37#include <linux/wait.h>
 38
 39#include <linux/skbuff.h>
 40#include <asm/io.h>
 41
 42#include <pcmcia/cs_types.h>
 43#include <pcmcia/cs.h>
 44#include <pcmcia/cistpl.h>
 45#include <pcmcia/ciscode.h>
 46#include <pcmcia/ds.h>
 47#include <pcmcia/cisreg.h>
 48
 49#include <net/bluetooth/bluetooth.h>
 50#include <net/bluetooth/hci_core.h>
 51
 52
 53
 54/* ======================== Module parameters ======================== */
 55
 56
 57MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
 58MODULE_DESCRIPTION("Bluetooth driver for the Anycom BlueCard (LSE039/LSE041)");
 59MODULE_LICENSE("GPL");
 60
 61
 62
 63/* ======================== Local structures ======================== */
 64
 65
 66typedef struct bluecard_info_t {
 67        struct pcmcia_device *p_dev;
 68        dev_node_t node;
 69
 70        struct hci_dev *hdev;
 71
 72        spinlock_t lock;                /* For serializing operations */
 73        struct timer_list timer;        /* For LED control */
 74
 75        struct sk_buff_head txq;
 76        unsigned long tx_state;
 77
 78        unsigned long rx_state;
 79        unsigned long rx_count;
 80        struct sk_buff *rx_skb;
 81
 82        unsigned char ctrl_reg;
 83        unsigned long hw_state;                /* Status of the hardware and LED control */
 84} bluecard_info_t;
 85
 86
 87static int bluecard_config(struct pcmcia_device *link);
 88static void bluecard_release(struct pcmcia_device *link);
 89
 90static void bluecard_detach(struct pcmcia_device *p_dev);
 91
 92
 93/* Default baud rate: 57600, 115200, 230400 or 460800 */
 94#define DEFAULT_BAUD_RATE  230400
 95
 96
 97/* Hardware states */
 98#define CARD_READY             1
 99#define CARD_HAS_PCCARD_ID     4
100#define CARD_HAS_POWER_LED     5
101#define CARD_HAS_ACTIVITY_LED  6
102
103/* Transmit states  */
104#define XMIT_SENDING         1
105#define XMIT_WAKEUP          2
106#define XMIT_BUFFER_NUMBER   5        /* unset = buffer one, set = buffer two */
107#define XMIT_BUF_ONE_READY   6
108#define XMIT_BUF_TWO_READY   7
109#define XMIT_SENDING_READY   8
110
111/* Receiver states */
112#define RECV_WAIT_PACKET_TYPE   0
113#define RECV_WAIT_EVENT_HEADER  1
114#define RECV_WAIT_ACL_HEADER    2
115#define RECV_WAIT_SCO_HEADER    3
116#define RECV_WAIT_DATA          4
117
118/* Special packet types */
119#define PKT_BAUD_RATE_57600   0x80
120#define PKT_BAUD_RATE_115200  0x81
121#define PKT_BAUD_RATE_230400  0x82
122#define PKT_BAUD_RATE_460800  0x83
123
124
125/* These are the register offsets */
126#define REG_COMMAND     0x20
127#define REG_INTERRUPT   0x21
128#define REG_CONTROL     0x22
129#define REG_RX_CONTROL  0x24
130#define REG_CARD_RESET  0x30
131#define REG_LED_CTRL    0x30
132
133/* REG_COMMAND */
134#define REG_COMMAND_TX_BUF_ONE  0x01
135#define REG_COMMAND_TX_BUF_TWO  0x02
136#define REG_COMMAND_RX_BUF_ONE  0x04
137#define REG_COMMAND_RX_BUF_TWO  0x08
138#define REG_COMMAND_RX_WIN_ONE  0x00
139#define REG_COMMAND_RX_WIN_TWO  0x10
140
141/* REG_CONTROL */
142#define REG_CONTROL_BAUD_RATE_57600   0x00
143#define REG_CONTROL_BAUD_RATE_115200  0x01
144#define REG_CONTROL_BAUD_RATE_230400  0x02
145#define REG_CONTROL_BAUD_RATE_460800  0x03
146#define REG_CONTROL_RTS               0x04
147#define REG_CONTROL_BT_ON             0x08
148#define REG_CONTROL_BT_RESET          0x10
149#define REG_CONTROL_BT_RES_PU         0x20
150#define REG_CONTROL_INTERRUPT         0x40
151#define REG_CONTROL_CARD_RESET        0x80
152
153/* REG_RX_CONTROL */
154#define RTS_LEVEL_SHIFT_BITS  0x02
155
156
157
158/* ======================== LED handling routines ======================== */
159
160
161static void bluecard_activity_led_timeout(u_long arg)
162{
163        bluecard_info_t *info = (bluecard_info_t *)arg;
164        unsigned int iobase = info->p_dev->io.BasePort1;
165
166        if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
167                return;
168
169        if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) {
170                /* Disable activity LED */
171                outb(0x08 | 0x20, iobase + 0x30);
172        } else {
173                /* Disable power LED */
174                outb(0x00, iobase + 0x30);
175        }
176}
177
178
179static void bluecard_enable_activity_led(bluecard_info_t *info)
180{
181        unsigned int iobase = info->p_dev->io.BasePort1;
182
183        if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
184                return;
185
186        if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) {
187                /* Enable activity LED */
188                outb(0x10 | 0x40, iobase + 0x30);
189
190                /* Stop the LED after HZ/4 */
191                mod_timer(&(info->timer), jiffies + HZ / 4);
192        } else {
193                /* Enable power LED */
194                outb(0x08 | 0x20, iobase + 0x30);
195
196                /* Stop the LED after HZ/2 */
197                mod_timer(&(info->timer), jiffies + HZ / 2);
198        }
199}
200
201
202
203/* ======================== Interrupt handling ======================== */
204
205
206static int bluecard_write(unsigned int iobase, unsigned int offset, __u8 *buf, int len)
207{
208        int i, actual;
209
210        actual = (len > 15) ? 15 : len;
211
212        outb_p(actual, iobase + offset);
213
214        for (i = 0; i < actual; i++)
215                outb_p(buf[i], iobase + offset + i + 1);
216
217        return actual;
218}
219
220
221static void bluecard_write_wakeup(bluecard_info_t *info)
222{
223        if (!info) {
224                BT_ERR("Unknown device");
225                return;
226        }
227
228        if (!test_bit(XMIT_SENDING_READY, &(info->tx_state)))
229                return;
230
231        if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) {
232                set_bit(XMIT_WAKEUP, &(info->tx_state));
233                return;
234        }
235
236        do {
237                register unsigned int iobase = info->p_dev->io.BasePort1;
238                register unsigned int offset;
239                register unsigned char command;
240                register unsigned long ready_bit;
241                register struct sk_buff *skb;
242                register int len;
243
244                clear_bit(XMIT_WAKEUP, &(info->tx_state));
245
246                if (!pcmcia_dev_present(info->p_dev))
247                        return;
248
249                if (test_bit(XMIT_BUFFER_NUMBER, &(info->tx_state))) {
250                        if (!test_bit(XMIT_BUF_TWO_READY, &(info->tx_state)))
251                                break;
252                        offset = 0x10;
253                        command = REG_COMMAND_TX_BUF_TWO;
254                        ready_bit = XMIT_BUF_TWO_READY;
255                } else {
256                        if (!test_bit(XMIT_BUF_ONE_READY, &(info->tx_state)))
257                                break;
258                        offset = 0x00;
259                        command = REG_COMMAND_TX_BUF_ONE;
260                        ready_bit = XMIT_BUF_ONE_READY;
261                }
262
263                if (!(skb = skb_dequeue(&(info->txq))))
264                        break;
265
266                if (bt_cb(skb)->pkt_type & 0x80) {
267                        /* Disable RTS */
268                        info->ctrl_reg |= REG_CONTROL_RTS;
269                        outb(info->ctrl_reg, iobase + REG_CONTROL);
270                }
271
272                /* Activate LED */
273                bluecard_enable_activity_led(info);
274
275                /* Send frame */
276                len = bluecard_write(iobase, offset, skb->data, skb->len);
277
278                /* Tell the FPGA to send the data */
279                outb_p(command, iobase + REG_COMMAND);
280
281                /* Mark the buffer as dirty */
282                clear_bit(ready_bit, &(info->tx_state));
283
284                if (bt_cb(skb)->pkt_type & 0x80) {
285                        DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
286                        DEFINE_WAIT(wait);
287
288                        unsigned char baud_reg;
289
290                        switch (bt_cb(skb)->pkt_type) {
291                        case PKT_BAUD_RATE_460800:
292                                baud_reg = REG_CONTROL_BAUD_RATE_460800;
293                                break;
294                        case PKT_BAUD_RATE_230400:
295                                baud_reg = REG_CONTROL_BAUD_RATE_230400;
296                                break;
297                        case PKT_BAUD_RATE_115200:
298                                baud_reg = REG_CONTROL_BAUD_RATE_115200;
299                                break;
300                        case PKT_BAUD_RATE_57600:
301                                /* Fall through... */
302                        default:
303                                baud_reg = REG_CONTROL_BAUD_RATE_57600;
304                                break;
305                        }
306
307                        /* Wait until the command reaches the baseband */
308                        prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE);
309                        schedule_timeout(HZ/10);
310                        finish_wait(&wq, &wait);
311
312                        /* Set baud on baseband */
313                        info->ctrl_reg &= ~0x03;
314                        info->ctrl_reg |= baud_reg;
315                        outb(info->ctrl_reg, iobase + REG_CONTROL);
316
317                        /* Enable RTS */
318                        info->ctrl_reg &= ~REG_CONTROL_RTS;
319                        outb(info->ctrl_reg, iobase + REG_CONTROL);
320
321                        /* Wait before the next HCI packet can be send */
322                        prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE);
323                        schedule_timeout(HZ);
324                        finish_wait(&wq, &wait);
325                }
326
327                if (len == skb->len) {
328                        kfree_skb(skb);
329                } else {
330                        skb_pull(skb, len);
331                        skb_queue_head(&(info->txq), skb);
332                }
333
334                info->hdev->stat.byte_tx += len;
335
336                /* Change buffer */
337                change_bit(XMIT_BUFFER_NUMBER, &(info->tx_state));
338
339        } while (test_bit(XMIT_WAKEUP, &(info->tx_state)));
340
341        clear_bit(XMIT_SENDING, &(info->tx_state));
342}
343
344
345static int bluecard_read(unsigned int iobase, unsigned int offset, __u8 *buf, int size)
346{
347        int i, n, len;
348
349        outb(REG_COMMAND_RX_WIN_ONE, iobase + REG_COMMAND);
350
351        len = inb(iobase + offset);
352        n = 0;
353        i = 1;
354
355        while (n < len) {
356
357                if (i == 16) {
358                        outb(REG_COMMAND_RX_WIN_TWO, iobase + REG_COMMAND);
359                        i = 0;
360                }
361
362                buf[n] = inb(iobase + offset + i);
363
364                n++;
365                i++;
366
367        }
368
369        return len;
370}
371
372
373static void bluecard_receive(bluecard_info_t *info, unsigned int offset)
374{
375        unsigned int iobase;
376        unsigned char buf[31];
377        int i, len;
378
379        if (!info) {
380                BT_ERR("Unknown device");
381                return;
382        }
383
384        iobase = info->p_dev->io.BasePort1;
385
386        if (test_bit(XMIT_SENDING_READY, &(info->tx_state)))
387                bluecard_enable_activity_led(info);
388
389        len = bluecard_read(iobase, offset, buf, sizeof(buf));
390
391        for (i = 0; i < len; i++) {
392
393                /* Allocate packet */
394                if (info->rx_skb == NULL) {
395                        info->rx_state = RECV_WAIT_PACKET_TYPE;
396                        info->rx_count = 0;
397                        if (!(info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
398                                BT_ERR("Can't allocate mem for new packet");
399                                return;
400                        }
401                }
402
403                if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
404
405                        info->rx_skb->dev = (void *) info->hdev;
406                        bt_cb(info->rx_skb)->pkt_type = buf[i];
407
408                        switch (bt_cb(info->rx_skb)->pkt_type) {
409
410                        case 0x00:
411                                /* init packet */
412                                if (offset != 0x00) {
413                                        set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
414                                        set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
415                                        set_bit(XMIT_SENDING_READY, &(info->tx_state));
416                                        bluecard_write_wakeup(info);
417                                }
418
419                                kfree_skb(info->rx_skb);
420                                info->rx_skb = NULL;
421                                break;
422
423                        case HCI_EVENT_PKT:
424                                info->rx_state = RECV_WAIT_EVENT_HEADER;
425                                info->rx_count = HCI_EVENT_HDR_SIZE;
426                                break;
427
428                        case HCI_ACLDATA_PKT:
429                                info->rx_state = RECV_WAIT_ACL_HEADER;
430                                info->rx_count = HCI_ACL_HDR_SIZE;
431                                break;
432
433                        case HCI_SCODATA_PKT:
434                                info->rx_state = RECV_WAIT_SCO_HEADER;
435                                info->rx_count = HCI_SCO_HDR_SIZE;
436                                break;
437
438                        default:
439                                /* unknown packet */
440                                BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type);
441                                info->hdev->stat.err_rx++;
442
443                                kfree_skb(info->rx_skb);
444                                info->rx_skb = NULL;
445                                break;
446
447                        }
448
449                } else {
450
451                        *skb_put(info->rx_skb, 1) = buf[i];
452                        info->rx_count--;
453
454                        if (info->rx_count == 0) {
455
456                                int dlen;
457                                struct hci_event_hdr *eh;
458                                struct hci_acl_hdr *ah;
459                                struct hci_sco_hdr *sh;
460
461                                switch (info->rx_state) {
462
463                                case RECV_WAIT_EVENT_HEADER:
464                                        eh = hci_event_hdr(info->rx_skb);
465                                        info->rx_state = RECV_WAIT_DATA;
466                                        info->rx_count = eh->plen;
467                                        break;
468
469                                case RECV_WAIT_ACL_HEADER:
470                                        ah = hci_acl_hdr(info->rx_skb);
471                                        dlen = __le16_to_cpu(ah->dlen);
472                                        info->rx_state = RECV_WAIT_DATA;
473                                        info->rx_count = dlen;
474                                        break;
475
476                                case RECV_WAIT_SCO_HEADER:
477                                        sh = hci_sco_hdr(info->rx_skb);
478                                        info->rx_state = RECV_WAIT_DATA;
479                                        info->rx_count = sh->dlen;
480                                        break;
481
482                                case RECV_WAIT_DATA:
483                                        hci_recv_frame(info->rx_skb);
484                                        info->rx_skb = NULL;
485                                        break;
486
487                                }
488
489                        }
490
491                }
492
493
494        }
495
496        info->hdev->stat.byte_rx += len;
497}
498
499
500static irqreturn_t bluecard_interrupt(int irq, void *dev_inst)
501{
502        bluecard_info_t *info = dev_inst;
503        unsigned int iobase;
504        unsigned char reg;
505
506        BUG_ON(!info->hdev);
507
508        if (!test_bit(CARD_READY, &(info->hw_state)))
509                return IRQ_HANDLED;
510
511        iobase = info->p_dev->io.BasePort1;
512
513        spin_lock(&(info->lock));
514
515        /* Disable interrupt */
516        info->ctrl_reg &= ~REG_CONTROL_INTERRUPT;
517        outb(info->ctrl_reg, iobase + REG_CONTROL);
518
519        reg = inb(iobase + REG_INTERRUPT);
520
521        if ((reg != 0x00) && (reg != 0xff)) {
522
523                if (reg & 0x04) {
524                        bluecard_receive(info, 0x00);
525                        outb(0x04, iobase + REG_INTERRUPT);
526                        outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
527                }
528
529                if (reg & 0x08) {
530                        bluecard_receive(info, 0x10);
531                        outb(0x08, iobase + REG_INTERRUPT);
532                        outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
533                }
534
535                if (reg & 0x01) {
536                        set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
537                        outb(0x01, iobase + REG_INTERRUPT);
538                        bluecard_write_wakeup(info);
539                }
540
541                if (reg & 0x02) {
542                        set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
543                        outb(0x02, iobase + REG_INTERRUPT);
544                        bluecard_write_wakeup(info);
545                }
546
547        }
548
549        /* Enable interrupt */
550        info->ctrl_reg |= REG_CONTROL_INTERRUPT;
551        outb(info->ctrl_reg, iobase + REG_CONTROL);
552
553        spin_unlock(&(info->lock));
554
555        return IRQ_HANDLED;
556}
557
558
559
560/* ======================== Device specific HCI commands ======================== */
561
562
563static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud)
564{
565        bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
566        struct sk_buff *skb;
567
568        /* Ericsson baud rate command */
569        unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 };
570
571        if (!(skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
572                BT_ERR("Can't allocate mem for new packet");
573                return -1;
574        }
575
576        switch (baud) {
577        case 460800:
578                cmd[4] = 0x00;
579                bt_cb(skb)->pkt_type = PKT_BAUD_RATE_460800;
580                break;
581        case 230400:
582                cmd[4] = 0x01;
583                bt_cb(skb)->pkt_type = PKT_BAUD_RATE_230400;
584                break;
585        case 115200:
586                cmd[4] = 0x02;
587                bt_cb(skb)->pkt_type = PKT_BAUD_RATE_115200;
588                break;
589        case 57600:
590                /* Fall through... */
591        default:
592                cmd[4] = 0x03;
593                bt_cb(skb)->pkt_type = PKT_BAUD_RATE_57600;
594                break;
595        }
596
597        memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
598
599        skb_queue_tail(&(info->txq), skb);
600
601        bluecard_write_wakeup(info);
602
603        return 0;
604}
605
606
607
608/* ======================== HCI interface ======================== */
609
610
611static int bluecard_hci_flush(struct hci_dev *hdev)
612{
613        bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
614
615        /* Drop TX queue */
616        skb_queue_purge(&(info->txq));
617
618        return 0;
619}
620
621
622static int bluecard_hci_open(struct hci_dev *hdev)
623{
624        bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
625        unsigned int iobase = info->p_dev->io.BasePort1;
626
627        if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
628                bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE);
629
630        if (test_and_set_bit(HCI_RUNNING, &(hdev->flags)))
631                return 0;
632
633        if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
634                /* Enable LED */
635                outb(0x08 | 0x20, iobase + 0x30);
636        }
637
638        return 0;
639}
640
641
642static int bluecard_hci_close(struct hci_dev *hdev)
643{
644        bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data);
645        unsigned int iobase = info->p_dev->io.BasePort1;
646
647        if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
648                return 0;
649
650        bluecard_hci_flush(hdev);
651
652        if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
653                /* Disable LED */
654                outb(0x00, iobase + 0x30);
655        }
656
657        return 0;
658}
659
660
661static int bluecard_hci_send_frame(struct sk_buff *skb)
662{
663        bluecard_info_t *info;
664        struct hci_dev *hdev = (struct hci_dev *)(skb->dev);
665
666        if (!hdev) {
667                BT_ERR("Frame for unknown HCI device (hdev=NULL)");
668                return -ENODEV;
669        }
670
671        info = (bluecard_info_t *)(hdev->driver_data);
672
673        switch (bt_cb(skb)->pkt_type) {
674        case HCI_COMMAND_PKT:
675                hdev->stat.cmd_tx++;
676                break;
677        case HCI_ACLDATA_PKT:
678                hdev->stat.acl_tx++;
679                break;
680        case HCI_SCODATA_PKT:
681                hdev->stat.sco_tx++;
682                break;
683        };
684
685        /* Prepend skb with frame type */
686        memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
687        skb_queue_tail(&(info->txq), skb);
688
689        bluecard_write_wakeup(info);
690
691        return 0;
692}
693
694
695static void bluecard_hci_destruct(struct hci_dev *hdev)
696{
697}
698
699
700static int bluecard_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
701{
702        return -ENOIOCTLCMD;
703}
704
705
706
707/* ======================== Card services HCI interaction ======================== */
708
709
710static int bluecard_open(bluecard_info_t *info)
711{
712        unsigned int iobase = info->p_dev->io.BasePort1;
713        struct hci_dev *hdev;
714        unsigned char id;
715
716        spin_lock_init(&(info->lock));
717
718        init_timer(&(info->timer));
719        info->timer.function = &bluecard_activity_led_timeout;
720        info->timer.data = (u_long)info;
721
722        skb_queue_head_init(&(info->txq));
723
724        info->rx_state = RECV_WAIT_PACKET_TYPE;
725        info->rx_count = 0;
726        info->rx_skb = NULL;
727
728        /* Initialize HCI device */
729        hdev = hci_alloc_dev();
730        if (!hdev) {
731                BT_ERR("Can't allocate HCI device");
732                return -ENOMEM;
733        }
734
735        info->hdev = hdev;
736
737        hdev->type = HCI_PCCARD;
738        hdev->driver_data = info;
739        SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
740
741        hdev->open     = bluecard_hci_open;
742        hdev->close    = bluecard_hci_close;
743        hdev->flush    = bluecard_hci_flush;
744        hdev->send     = bluecard_hci_send_frame;
745        hdev->destruct = bluecard_hci_destruct;
746        hdev->ioctl    = bluecard_hci_ioctl;
747
748        hdev->owner = THIS_MODULE;
749
750        id = inb(iobase + 0x30);
751
752        if ((id & 0x0f) == 0x02)
753                set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state));
754
755        if (id & 0x10)
756                set_bit(CARD_HAS_POWER_LED, &(info->hw_state));
757
758        if (id & 0x20)
759                set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state));
760
761        /* Reset card */
762        info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
763        outb(info->ctrl_reg, iobase + REG_CONTROL);
764
765        /* Turn FPGA off */
766        outb(0x80, iobase + 0x30);
767
768        /* Wait some time */
769        msleep(10);
770
771        /* Turn FPGA on */
772        outb(0x00, iobase + 0x30);
773
774        /* Activate card */
775        info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU;
776        outb(info->ctrl_reg, iobase + REG_CONTROL);
777
778        /* Enable interrupt */
779        outb(0xff, iobase + REG_INTERRUPT);
780        info->ctrl_reg |= REG_CONTROL_INTERRUPT;
781        outb(info->ctrl_reg, iobase + REG_CONTROL);
782
783        if ((id & 0x0f) == 0x03) {
784                /* Disable RTS */
785                info->ctrl_reg |= REG_CONTROL_RTS;
786                outb(info->ctrl_reg, iobase + REG_CONTROL);
787
788                /* Set baud rate */
789                info->ctrl_reg |= 0x03;
790                outb(info->ctrl_reg, iobase + REG_CONTROL);
791
792                /* Enable RTS */
793                info->ctrl_reg &= ~REG_CONTROL_RTS;
794                outb(info->ctrl_reg, iobase + REG_CONTROL);
795
796                set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
797                set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
798                set_bit(XMIT_SENDING_READY, &(info->tx_state));
799        }
800
801        /* Start the RX buffers */
802        outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
803        outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
804
805        /* Signal that the hardware is ready */
806        set_bit(CARD_READY, &(info->hw_state));
807
808        /* Drop TX queue */
809        skb_queue_purge(&(info->txq));
810
811        /* Control the point at which RTS is enabled */
812        outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL);
813
814        /* Timeout before it is safe to send the first HCI packet */
815        msleep(1250);
816
817        /* Register HCI device */
818        if (hci_register_dev(hdev) < 0) {
819                BT_ERR("Can't register HCI device");
820                info->hdev = NULL;
821                hci_free_dev(hdev);
822                return -ENODEV;
823        }
824
825        return 0;
826}
827
828
829static int bluecard_close(bluecard_info_t *info)
830{
831        unsigned int iobase = info->p_dev->io.BasePort1;
832        struct hci_dev *hdev = info->hdev;
833
834        if (!hdev)
835                return -ENODEV;
836
837        bluecard_hci_close(hdev);
838
839        clear_bit(CARD_READY, &(info->hw_state));
840
841        /* Reset card */
842        info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
843        outb(info->ctrl_reg, iobase + REG_CONTROL);
844
845        /* Turn FPGA off */
846        outb(0x80, iobase + 0x30);
847
848        if (hci_unregister_dev(hdev) < 0)
849                BT_ERR("Can't unregister HCI device %s", hdev->name);
850
851        hci_free_dev(hdev);
852
853        return 0;
854}
855
856static int bluecard_probe(struct pcmcia_device *link)
857{
858        bluecard_info_t *info;
859
860        /* Create new info device */
861        info = kzalloc(sizeof(*info), GFP_KERNEL);
862        if (!info)
863                return -ENOMEM;
864
865        info->p_dev = link;
866        link->priv = info;
867
868        link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
869        link->io.NumPorts1 = 8;
870        link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING | IRQ_HANDLE_PRESENT;
871        link->irq.IRQInfo1 = IRQ_LEVEL_ID;
872
873        link->irq.Handler = bluecard_interrupt;
874        link->irq.Instance = info;
875
876        link->conf.Attributes = CONF_ENABLE_IRQ;
877        link->conf.IntType = INT_MEMORY_AND_IO;
878
879        return bluecard_config(link);
880}
881
882
883static void bluecard_detach(struct pcmcia_device *link)
884{
885        bluecard_info_t *info = link->priv;
886
887        bluecard_release(link);
888        kfree(info);
889}
890
891
892static int bluecard_config(struct pcmcia_device *link)
893{
894        bluecard_info_t *info = link->priv;
895        int i, n;
896
897        link->conf.ConfigIndex = 0x20;
898        link->io.NumPorts1 = 64;
899        link->io.IOAddrLines = 6;
900
901        for (n = 0; n < 0x400; n += 0x40) {
902                link->io.BasePort1 = n ^ 0x300;
903                i = pcmcia_request_io(link, &link->io);
904                if (i == 0)
905                        break;
906        }
907
908        if (i != 0) {
909                cs_error(link, RequestIO, i);
910                goto failed;
911        }
912
913        i = pcmcia_request_irq(link, &link->irq);
914        if (i != 0) {
915                cs_error(link, RequestIRQ, i);
916                link->irq.AssignedIRQ = 0;
917        }
918
919        i = pcmcia_request_configuration(link, &link->conf);
920        if (i != 0) {
921                cs_error(link, RequestConfiguration, i);
922                goto failed;
923        }
924
925        if (bluecard_open(info) != 0)
926                goto failed;
927
928        strcpy(info->node.dev_name, info->hdev->name);
929        link->dev_node = &info->node;
930
931        return 0;
932
933failed:
934        bluecard_release(link);
935        return -ENODEV;
936}
937
938
939static void bluecard_release(struct pcmcia_device *link)
940{
941        bluecard_info_t *info = link->priv;
942
943        bluecard_close(info);
944
945        del_timer(&(info->timer));
946
947        pcmcia_disable_device(link);
948}
949
950static struct pcmcia_device_id bluecard_ids[] = {
951        PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e),
952        PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c),
953        PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab),
954        PCMCIA_DEVICE_NULL
955};
956MODULE_DEVICE_TABLE(pcmcia, bluecard_ids);
957
958static struct pcmcia_driver bluecard_driver = {
959        .owner                = THIS_MODULE,
960        .drv                = {
961                .name        = "bluecard_cs",
962        },
963        .probe                = bluecard_probe,
964        .remove                = bluecard_detach,
965        .id_table        = bluecard_ids,
966};
967
968static int __init init_bluecard_cs(void)
969{
970        return pcmcia_register_driver(&bluecard_driver);
971}
972
973
974static void __exit exit_bluecard_cs(void)
975{
976        pcmcia_unregister_driver(&bluecard_driver);
977}
978
979module_init(init_bluecard_cs);
980module_exit(exit_bluecard_cs);