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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
57
58
59MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
60MODULE_DESCRIPTION("Bluetooth driver for Nokia Connectivity Card DTL-1");
61MODULE_LICENSE("GPL");
62
63
64
65
66
67
68typedef struct dtl1_info_t {
69 struct pcmcia_device *p_dev;
70
71 struct hci_dev *hdev;
72
73 spinlock_t lock;
74
75 unsigned long flowmask;
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
87static int dtl1_config(struct pcmcia_device *link);
88static void dtl1_release(struct pcmcia_device *link);
89
90static void dtl1_detach(struct pcmcia_device *p_dev);
91
92
93
94#define XMIT_SENDING 1
95#define XMIT_WAKEUP 2
96#define XMIT_WAITING 8
97
98
99#define RECV_WAIT_NSH 0
100#define RECV_WAIT_DATA 1
101
102
103typedef struct {
104 u8 type;
105 u8 zero;
106 u16 len;
107} __attribute__ ((packed)) nsh_t;
108
109#define NSHL 4
110
111
112
113
114
115
116static int dtl1_write(unsigned int iobase, int fifo_size, __u8 *buf, int len)
117{
118 int actual = 0;
119
120
121 if (!(inb(iobase + UART_LSR) & UART_LSR_THRE))
122 return 0;
123
124
125 while ((fifo_size-- > 0) && (actual < len)) {
126
127 outb(buf[actual], iobase + UART_TX);
128 actual++;
129 }
130
131 return actual;
132}
133
134
135static 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 {
153 register unsigned int iobase = info->p_dev->io.BasePort1;
154 register struct sk_buff *skb;
155 register int len;
156
157 clear_bit(XMIT_WAKEUP, &(info->tx_state));
158
159 if (!pcmcia_dev_present(info->p_dev))
160 return;
161
162 if (!(skb = skb_dequeue(&(info->txq))))
163 break;
164
165
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
184static 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
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
207static 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
218 iobase = info->p_dev->io.BasePort1;
219
220 do {
221 info->hdev->stat.byte_rx++;
222
223
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:
245 bt_cb(info->rx_skb)->pkt_type = nsh->type;
246
247
248 if (nsh->len & 0x0001) {
249 info->rx_skb->tail--;
250 info->rx_skb->len--;
251 }
252
253
254 skb_pull(info->rx_skb, NSHL);
255
256 switch (bt_cb(info->rx_skb)->pkt_type) {
257 case 0x80:
258
259 dtl1_control(info, info->rx_skb);
260 break;
261 case 0x82:
262 case 0x83:
263 case 0x84:
264
265 info->rx_skb->dev = (void *) info->hdev;
266 bt_cb(info->rx_skb)->pkt_type &= 0x0f;
267 hci_recv_frame(info->rx_skb);
268 break;
269 default:
270
271 BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type);
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
285 if (boguscount++ > 32)
286 break;
287
288 } while (inb(iobase + UART_LSR) & UART_LSR_DR);
289}
290
291
292static irqreturn_t dtl1_interrupt(int irq, void *dev_inst)
293{
294 dtl1_info_t *info = dev_inst;
295 unsigned int iobase;
296 unsigned char msr;
297 int boguscount = 0;
298 int iir, lsr;
299 irqreturn_t r = IRQ_NONE;
300
301 if (!info || !info->hdev)
302
303 return IRQ_NONE;
304
305 iobase = info->p_dev->io.BasePort1;
306
307 spin_lock(&(info->lock));
308
309 iir = inb(iobase + UART_IIR) & UART_IIR_ID;
310 while (iir) {
311
312 r = IRQ_HANDLED;
313
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
322 dtl1_receive(info);
323 break;
324 case UART_IIR_THRI:
325 if (lsr & UART_LSR_THRE) {
326
327 dtl1_write_wakeup(info);
328 }
329 break;
330 default:
331 BT_ERR("Unhandled IIR=%#x", iir);
332 break;
333 }
334
335
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);
349 r = IRQ_HANDLED;
350 }
351
352 spin_unlock(&(info->lock));
353
354 return r;
355}
356
357
358
359
360
361
362static int dtl1_hci_open(struct hci_dev *hdev)
363{
364 set_bit(HCI_RUNNING, &(hdev->flags));
365
366 return 0;
367}
368
369
370static int dtl1_hci_flush(struct hci_dev *hdev)
371{
372 dtl1_info_t *info = (dtl1_info_t *)(hdev->driver_data);
373
374
375 skb_queue_purge(&(info->txq));
376
377 return 0;
378}
379
380
381static 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
392static 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
406 switch (bt_cb(skb)->pkt_type) {
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;
419 default:
420 return -EILSEQ;
421 };
422
423 nsh.zero = 0;
424 nsh.len = skb->len;
425
426 s = bt_skb_alloc(NSHL + skb->len + 1, GFP_ATOMIC);
427 if (!s)
428 return -ENOMEM;
429
430 skb_reserve(s, NSHL);
431 skb_copy_from_linear_data(skb, skb_put(s, skb->len), skb->len);
432 if (skb->len & 0x0001)
433 *skb_put(s, 1) = 0;
434
435
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
447static void dtl1_hci_destruct(struct hci_dev *hdev)
448{
449}
450
451
452static int dtl1_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
453{
454 return -ENOIOCTLCMD;
455}
456
457
458
459
460
461
462static int dtl1_open(dtl1_info_t *info)
463{
464 unsigned long flags;
465 unsigned int iobase = info->p_dev->io.BasePort1;
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
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
487 hdev->bus = HCI_PCCARD;
488 hdev->driver_data = info;
489 SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
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
503 outb(0, iobase + UART_MCR);
504
505
506 outb(0, iobase + UART_IER);
507
508
509 outb(UART_LCR_WLEN8, iobase + UART_LCR);
510 outb((UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2), iobase + UART_MCR);
511
512 info->ri_latch = inb(info->p_dev->io.BasePort1 + UART_MSR) & UART_MSR_RI;
513
514
515 outb(UART_IER_RLSI | UART_IER_RDI | UART_IER_THRI, iobase + UART_IER);
516
517 spin_unlock_irqrestore(&(info->lock), flags);
518
519
520 msleep(2000);
521
522
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
534static int dtl1_close(dtl1_info_t *info)
535{
536 unsigned long flags;
537 unsigned int iobase = info->p_dev->io.BasePort1;
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
548 outb(0, iobase + UART_MCR);
549
550
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
563static int dtl1_probe(struct pcmcia_device *link)
564{
565 dtl1_info_t *info;
566
567
568 info = kzalloc(sizeof(*info), GFP_KERNEL);
569 if (!info)
570 return -ENOMEM;
571
572 info->p_dev = link;
573 link->priv = info;
574
575 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
576 link->io.NumPorts1 = 8;
577
578 link->conf.Attributes = CONF_ENABLE_IRQ;
579 link->conf.IntType = INT_MEMORY_AND_IO;
580
581 return dtl1_config(link);
582}
583
584
585static void dtl1_detach(struct pcmcia_device *link)
586{
587 dtl1_info_t *info = link->priv;
588
589 dtl1_release(link);
590
591 kfree(info);
592}
593
594static int dtl1_confcheck(struct pcmcia_device *p_dev,
595 cistpl_cftable_entry_t *cf,
596 cistpl_cftable_entry_t *dflt,
597 unsigned int vcc,
598 void *priv_data)
599{
600 if ((cf->io.nwin == 1) && (cf->io.win[0].len > 8)) {
601 p_dev->io.BasePort1 = cf->io.win[0].base;
602 p_dev->io.NumPorts1 = cf->io.win[0].len;
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;
608}
609
610static int dtl1_config(struct pcmcia_device *link)
611{
612 dtl1_info_t *info = link->priv;
613 int i;
614
615
616 link->io.NumPorts1 = 8;
617 if (pcmcia_loop_config(link, dtl1_confcheck, NULL) < 0)
618 goto failed;
619
620 i = pcmcia_request_irq(link, dtl1_interrupt);
621 if (i != 0)
622 goto failed;
623
624 i = pcmcia_request_configuration(link, &link->conf);
625 if (i != 0)
626 goto failed;
627
628 if (dtl1_open(info) != 0)
629 goto failed;
630
631 return 0;
632
633failed:
634 dtl1_release(link);
635 return -ENODEV;
636}
637
638
639static void dtl1_release(struct pcmcia_device *link)
640{
641 dtl1_info_t *info = link->priv;
642
643 dtl1_close(info);
644
645 pcmcia_disable_device(link);
646}
647
648
649static struct pcmcia_device_id dtl1_ids[] = {
650 PCMCIA_DEVICE_PROD_ID12("Nokia Mobile Phones", "DTL-1", 0xe1bfdd64, 0xe168480d),
651 PCMCIA_DEVICE_PROD_ID12("Nokia Mobile Phones", "DTL-4", 0xe1bfdd64, 0x9102bc82),
652 PCMCIA_DEVICE_PROD_ID12("Socket", "CF", 0xb38bcc2e, 0x44ebf863),
653 PCMCIA_DEVICE_PROD_ID12("Socket", "CF+ Personal Network Card", 0xb38bcc2e, 0xe732bae3),
654 PCMCIA_DEVICE_NULL
655};
656MODULE_DEVICE_TABLE(pcmcia, dtl1_ids);
657
658static struct pcmcia_driver dtl1_driver = {
659 .owner = THIS_MODULE,
660 .drv = {
661 .name = "dtl1_cs",
662 },
663 .probe = dtl1_probe,
664 .remove = dtl1_detach,
665 .id_table = dtl1_ids,
666};
667
668static int __init init_dtl1_cs(void)
669{
670 return pcmcia_register_driver(&dtl1_driver);
671}
672
673
674static void __exit exit_dtl1_cs(void)
675{
676 pcmcia_unregister_driver(&dtl1_driver);
677}
678
679module_init(init_dtl1_cs);
680module_exit(exit_dtl1_cs);
681
