projects / linux-2.6-block.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa...
[linux-2.6-block.git] / drivers / bluetooth / bluecard_cs.c
CommitLineData
1da177e4
LT		 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
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>
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>
c89827e0 40#include <linux/io.h>
1da177e4 41
1da177e4
LT		 42#include <pcmcia/cistpl.h>
43#include <pcmcia/ciscode.h>
44#include <pcmcia/ds.h>
45#include <pcmcia/cisreg.h>
46
47#include <net/bluetooth/bluetooth.h>
48#include <net/bluetooth/hci_core.h>
49
50
51
52/* ======================== Module parameters ======================== */
53
54
55MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
56MODULE_DESCRIPTION("Bluetooth driver for the Anycom BlueCard (LSE039/LSE041)");
57MODULE_LICENSE("GPL");
58
59
60
61/* ======================== Local structures ======================== */
62
63
d664cd98 64struct bluecard_info {
fd238232 65 struct pcmcia_device *p_dev;
1da177e4
LT		 66
67 struct hci_dev *hdev;
68
69 spinlock_t lock; /* For serializing operations */
70 struct timer_list timer; /* For LED control */
71
72 struct sk_buff_head txq;
73 unsigned long tx_state;
74
75 unsigned long rx_state;
76 unsigned long rx_count;
77 struct sk_buff *rx_skb;
78
79 unsigned char ctrl_reg;
80 unsigned long hw_state; /* Status of the hardware and LED control */
d664cd98 81};
1da177e4
LT		 82
83
15b99ac1 84static int bluecard_config(struct pcmcia_device *link);
fba395ee 85static void bluecard_release(struct pcmcia_device *link);
1da177e4 86
cc3b4866 87static void bluecard_detach(struct pcmcia_device *p_dev);
1da177e4 88
1da177e4
LT		 89
90/* Default baud rate: 57600, 115200, 230400 or 460800 */
91#define DEFAULT_BAUD_RATE 230400
92
93
94/* Hardware states */
95#define CARD_READY 1
96#define CARD_HAS_PCCARD_ID 4
97#define CARD_HAS_POWER_LED 5
98#define CARD_HAS_ACTIVITY_LED 6
99
100/* Transmit states */
101#define XMIT_SENDING 1
102#define XMIT_WAKEUP 2
103#define XMIT_BUFFER_NUMBER 5 /* unset = buffer one, set = buffer two */
104#define XMIT_BUF_ONE_READY 6
105#define XMIT_BUF_TWO_READY 7
106#define XMIT_SENDING_READY 8
107
108/* Receiver states */
109#define RECV_WAIT_PACKET_TYPE 0
110#define RECV_WAIT_EVENT_HEADER 1
111#define RECV_WAIT_ACL_HEADER 2
112#define RECV_WAIT_SCO_HEADER 3
113#define RECV_WAIT_DATA 4
114
115/* Special packet types */
116#define PKT_BAUD_RATE_57600 0x80
117#define PKT_BAUD_RATE_115200 0x81
118#define PKT_BAUD_RATE_230400 0x82
119#define PKT_BAUD_RATE_460800 0x83
120
121
122/* These are the register offsets */
123#define REG_COMMAND 0x20
124#define REG_INTERRUPT 0x21
125#define REG_CONTROL 0x22
126#define REG_RX_CONTROL 0x24
127#define REG_CARD_RESET 0x30
128#define REG_LED_CTRL 0x30
129
130/* REG_COMMAND */
131#define REG_COMMAND_TX_BUF_ONE 0x01
132#define REG_COMMAND_TX_BUF_TWO 0x02
133#define REG_COMMAND_RX_BUF_ONE 0x04
134#define REG_COMMAND_RX_BUF_TWO 0x08
135#define REG_COMMAND_RX_WIN_ONE 0x00
136#define REG_COMMAND_RX_WIN_TWO 0x10
137
138/* REG_CONTROL */
139#define REG_CONTROL_BAUD_RATE_57600 0x00
140#define REG_CONTROL_BAUD_RATE_115200 0x01
141#define REG_CONTROL_BAUD_RATE_230400 0x02
142#define REG_CONTROL_BAUD_RATE_460800 0x03
143#define REG_CONTROL_RTS 0x04
144#define REG_CONTROL_BT_ON 0x08
145#define REG_CONTROL_BT_RESET 0x10
146#define REG_CONTROL_BT_RES_PU 0x20
147#define REG_CONTROL_INTERRUPT 0x40
148#define REG_CONTROL_CARD_RESET 0x80
149
150/* REG_RX_CONTROL */
151#define RTS_LEVEL_SHIFT_BITS 0x02
152
153
154
155/* ======================== LED handling routines ======================== */
156
157
158static void bluecard_activity_led_timeout(u_long arg)
159{
d664cd98 160 struct bluecard_info *info = (struct bluecard_info *)arg;
9a017a91 161 unsigned int iobase = info->p_dev->resource[0]->start;
1da177e4
LT		 162
163 if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
164 return;
165
166 if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) {
167 /* Disable activity LED */
168 outb(0x08 | 0x20, iobase + 0x30);
169 } else {
170 /* Disable power LED */
171 outb(0x00, iobase + 0x30);
172 }
173}
174
175
d664cd98 176static void bluecard_enable_activity_led(struct bluecard_info *info)
1da177e4 177{
9a017a91 178 unsigned int iobase = info->p_dev->resource[0]->start;
1da177e4
LT		 179
180 if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
181 return;
182
183 if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) {
184 /* Enable activity LED */
185 outb(0x10 | 0x40, iobase + 0x30);
186
187 /* Stop the LED after HZ/4 */
188 mod_timer(&(info->timer), jiffies + HZ / 4);
189 } else {
190 /* Enable power LED */
191 outb(0x08 | 0x20, iobase + 0x30);
192
193 /* Stop the LED after HZ/2 */
194 mod_timer(&(info->timer), jiffies + HZ / 2);
195 }
196}
197
198
199
200/* ======================== Interrupt handling ======================== */
201
202
203static int bluecard_write(unsigned int iobase, unsigned int offset, __u8 *buf, int len)
204{
205 int i, actual;
206
207 actual = (len > 15) ? 15 : len;
208
209 outb_p(actual, iobase + offset);
210
211 for (i = 0; i < actual; i++)
212 outb_p(buf[i], iobase + offset + i + 1);
213
214 return actual;
215}
216
217
d664cd98 218static void bluecard_write_wakeup(struct bluecard_info *info)
1da177e4
LT		 219{
220 if (!info) {
221 BT_ERR("Unknown device");
222 return;
223 }
224
225 if (!test_bit(XMIT_SENDING_READY, &(info->tx_state)))
226 return;
227
228 if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) {
229 set_bit(XMIT_WAKEUP, &(info->tx_state));
230 return;
231 }
232
233 do {
fc5fef61
GP		 234 unsigned int iobase = info->p_dev->resource[0]->start;
235 unsigned int offset;
236 unsigned char command;
237 unsigned long ready_bit;
1da177e4 238 register struct sk_buff *skb;
fc5fef61 239 int len;
1da177e4
LT		 240
241 clear_bit(XMIT_WAKEUP, &(info->tx_state));
242
e2d40963 243 if (!pcmcia_dev_present(info->p_dev))
1da177e4
LT		 244 return;
245
246 if (test_bit(XMIT_BUFFER_NUMBER, &(info->tx_state))) {
247 if (!test_bit(XMIT_BUF_TWO_READY, &(info->tx_state)))
248 break;
249 offset = 0x10;
250 command = REG_COMMAND_TX_BUF_TWO;
251 ready_bit = XMIT_BUF_TWO_READY;
252 } else {
253 if (!test_bit(XMIT_BUF_ONE_READY, &(info->tx_state)))
254 break;
255 offset = 0x00;
256 command = REG_COMMAND_TX_BUF_ONE;
257 ready_bit = XMIT_BUF_ONE_READY;
258 }
259
a08b15e6
VI		 260 skb = skb_dequeue(&(info->txq));
261 if (!skb)
1da177e4
LT		 262 break;
263
0d48d939 264 if (bt_cb(skb)->pkt_type & 0x80) {
1da177e4
LT		 265 /* Disable RTS */
266 info->ctrl_reg |= REG_CONTROL_RTS;
267 outb(info->ctrl_reg, iobase + REG_CONTROL);
268 }
269
270 /* Activate LED */
271 bluecard_enable_activity_led(info);
272
273 /* Send frame */
274 len = bluecard_write(iobase, offset, skb->data, skb->len);
275
276 /* Tell the FPGA to send the data */
277 outb_p(command, iobase + REG_COMMAND);
278
279 /* Mark the buffer as dirty */
280 clear_bit(ready_bit, &(info->tx_state));
281
0d48d939 282 if (bt_cb(skb)->pkt_type & 0x80) {
7259f0d0 283 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
1da177e4
LT		 284 DEFINE_WAIT(wait);
285
286 unsigned char baud_reg;
287
0d48d939 288 switch (bt_cb(skb)->pkt_type) {
1da177e4
LT		 289 case PKT_BAUD_RATE_460800:
290 baud_reg = REG_CONTROL_BAUD_RATE_460800;
291 break;
292 case PKT_BAUD_RATE_230400:
293 baud_reg = REG_CONTROL_BAUD_RATE_230400;
294 break;
295 case PKT_BAUD_RATE_115200:
296 baud_reg = REG_CONTROL_BAUD_RATE_115200;
297 break;
298 case PKT_BAUD_RATE_57600:
299 /* Fall through... */
300 default:
301 baud_reg = REG_CONTROL_BAUD_RATE_57600;
302 break;
303 }
304
305 /* Wait until the command reaches the baseband */
306 prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE);
307 schedule_timeout(HZ/10);
308 finish_wait(&wq, &wait);
309
310 /* Set baud on baseband */
311 info->ctrl_reg &= ~0x03;
312 info->ctrl_reg |= baud_reg;
313 outb(info->ctrl_reg, iobase + REG_CONTROL);
314
315 /* Enable RTS */
316 info->ctrl_reg &= ~REG_CONTROL_RTS;
317 outb(info->ctrl_reg, iobase + REG_CONTROL);
318
319 /* Wait before the next HCI packet can be send */
320 prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE);
321 schedule_timeout(HZ);
322 finish_wait(&wq, &wait);
323 }
324
325 if (len == skb->len) {
326 kfree_skb(skb);
327 } else {
328 skb_pull(skb, len);
329 skb_queue_head(&(info->txq), skb);
330 }
331
332 info->hdev->stat.byte_tx += len;
333
334 /* Change buffer */
335 change_bit(XMIT_BUFFER_NUMBER, &(info->tx_state));
336
337 } while (test_bit(XMIT_WAKEUP, &(info->tx_state)));
338
339 clear_bit(XMIT_SENDING, &(info->tx_state));
340}
341
342
343static int bluecard_read(unsigned int iobase, unsigned int offset, __u8 *buf, int size)
344{
345 int i, n, len;
346
347 outb(REG_COMMAND_RX_WIN_ONE, iobase + REG_COMMAND);
348
349 len = inb(iobase + offset);
350 n = 0;
351 i = 1;
352
353 while (n < len) {
354
355 if (i == 16) {
356 outb(REG_COMMAND_RX_WIN_TWO, iobase + REG_COMMAND);
357 i = 0;
358 }
359
360 buf[n] = inb(iobase + offset + i);
361
362 n++;
363 i++;
364
365 }
366
367 return len;
368}
369
370
d664cd98
HS		 371static void bluecard_receive(struct bluecard_info *info,
372 unsigned int offset)
1da177e4
LT		 373{
374 unsigned int iobase;
375 unsigned char buf[31];
376 int i, len;
377
378 if (!info) {
379 BT_ERR("Unknown device");
380 return;
381 }
382
9a017a91 383 iobase = info->p_dev->resource[0]->start;
1da177e4
LT		 384
385 if (test_bit(XMIT_SENDING_READY, &(info->tx_state)))
386 bluecard_enable_activity_led(info);
387
388 len = bluecard_read(iobase, offset, buf, sizeof(buf));
389
390 for (i = 0; i < len; i++) {
391
392 /* Allocate packet */
393 if (info->rx_skb == NULL) {
394 info->rx_state = RECV_WAIT_PACKET_TYPE;
395 info->rx_count = 0;
a08b15e6
VI		 396 info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
397 if (!info->rx_skb) {
1da177e4
LT		 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
0d48d939 405 bt_cb(info->rx_skb)->pkt_type = buf[i];
1da177e4 406
0d48d939 407 switch (bt_cb(info->rx_skb)->pkt_type) {
1da177e4
LT		 408
409 case 0x00:
410 /* init packet */
411 if (offset != 0x00) {
412 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
413 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
414 set_bit(XMIT_SENDING_READY, &(info->tx_state));
415 bluecard_write_wakeup(info);
416 }
417
418 kfree_skb(info->rx_skb);
419 info->rx_skb = NULL;
420 break;
421
422 case HCI_EVENT_PKT:
423 info->rx_state = RECV_WAIT_EVENT_HEADER;
424 info->rx_count = HCI_EVENT_HDR_SIZE;
425 break;
426
427 case HCI_ACLDATA_PKT:
428 info->rx_state = RECV_WAIT_ACL_HEADER;
429 info->rx_count = HCI_ACL_HDR_SIZE;
430 break;
431
432 case HCI_SCODATA_PKT:
433 info->rx_state = RECV_WAIT_SCO_HEADER;
434 info->rx_count = HCI_SCO_HDR_SIZE;
435 break;
436
437 default:
438 /* unknown packet */
0d48d939 439 BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type);
1da177e4
LT		 440 info->hdev->stat.err_rx++;
441
442 kfree_skb(info->rx_skb);
443 info->rx_skb = NULL;
444 break;
445
446 }
447
448 } else {
449
450 *skb_put(info->rx_skb, 1) = buf[i];
451 info->rx_count--;
452
453 if (info->rx_count == 0) {
454
455 int dlen;
456 struct hci_event_hdr *eh;
457 struct hci_acl_hdr *ah;
458 struct hci_sco_hdr *sh;
459
460 switch (info->rx_state) {
461
462 case RECV_WAIT_EVENT_HEADER:
2a123b86 463 eh = hci_event_hdr(info->rx_skb);
1da177e4
LT		 464 info->rx_state = RECV_WAIT_DATA;
465 info->rx_count = eh->plen;
466 break;
467
468 case RECV_WAIT_ACL_HEADER:
2a123b86 469 ah = hci_acl_hdr(info->rx_skb);
1da177e4
LT		 470 dlen = __le16_to_cpu(ah->dlen);
471 info->rx_state = RECV_WAIT_DATA;
472 info->rx_count = dlen;
473 break;
474
475 case RECV_WAIT_SCO_HEADER:
2a123b86 476 sh = hci_sco_hdr(info->rx_skb);
1da177e4
LT		 477 info->rx_state = RECV_WAIT_DATA;
478 info->rx_count = sh->dlen;
479 break;
480
481 case RECV_WAIT_DATA:
e1a26170 482 hci_recv_frame(info->hdev, info->rx_skb);
1da177e4
LT		 483 info->rx_skb = NULL;
484 break;
485
486 }
487
488 }
489
490 }
491
492
493 }
494
495 info->hdev->stat.byte_rx += len;
496}
497
498
7d12e780 499static irqreturn_t bluecard_interrupt(int irq, void *dev_inst)
1da177e4 500{
d664cd98 501 struct bluecard_info *info = dev_inst;
1da177e4
LT		 502 unsigned int iobase;
503 unsigned char reg;
504
7427847d
MF		 505 if (!info || !info->hdev)
506 /* our irq handler is shared */
507 return IRQ_NONE;
1da177e4
LT		 508
509 if (!test_bit(CARD_READY, &(info->hw_state)))
510 return IRQ_HANDLED;
511
9a017a91 512 iobase = info->p_dev->resource[0]->start;
1da177e4
LT		 513
514 spin_lock(&(info->lock));
515
516 /* Disable interrupt */
517 info->ctrl_reg &= ~REG_CONTROL_INTERRUPT;
518 outb(info->ctrl_reg, iobase + REG_CONTROL);
519
520 reg = inb(iobase + REG_INTERRUPT);
521
522 if ((reg != 0x00) && (reg != 0xff)) {
523
524 if (reg & 0x04) {
525 bluecard_receive(info, 0x00);
526 outb(0x04, iobase + REG_INTERRUPT);
527 outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
528 }
529
530 if (reg & 0x08) {
531 bluecard_receive(info, 0x10);
532 outb(0x08, iobase + REG_INTERRUPT);
533 outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
534 }
535
536 if (reg & 0x01) {
537 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
538 outb(0x01, iobase + REG_INTERRUPT);
539 bluecard_write_wakeup(info);
540 }
541
542 if (reg & 0x02) {
543 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
544 outb(0x02, iobase + REG_INTERRUPT);
545 bluecard_write_wakeup(info);
546 }
547
548 }
549
550 /* Enable interrupt */
551 info->ctrl_reg |= REG_CONTROL_INTERRUPT;
552 outb(info->ctrl_reg, iobase + REG_CONTROL);
553
554 spin_unlock(&(info->lock));
555
556 return IRQ_HANDLED;
557}
558
559
560
561/* ======================== Device specific HCI commands ======================== */
562
563
564static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud)
565{
d664cd98 566 struct bluecard_info *info = hci_get_drvdata(hdev);
1da177e4
LT		 567 struct sk_buff *skb;
568
569 /* Ericsson baud rate command */
570 unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 };
571
a08b15e6
VI		 572 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
573 if (!skb) {
1da177e4
LT		 574 BT_ERR("Can't allocate mem for new packet");
575 return -1;
576 }
577
578 switch (baud) {
579 case 460800:
580 cmd[4] = 0x00;
0d48d939 581 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_460800;
1da177e4
LT		 582 break;
583 case 230400:
584 cmd[4] = 0x01;
0d48d939 585 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_230400;
1da177e4
LT		 586 break;
587 case 115200:
588 cmd[4] = 0x02;
0d48d939 589 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_115200;
1da177e4
LT		 590 break;
591 case 57600:
592 /* Fall through... */
593 default:
594 cmd[4] = 0x03;
0d48d939 595 bt_cb(skb)->pkt_type = PKT_BAUD_RATE_57600;
1da177e4
LT		 596 break;
597 }
598
599 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
600
601 skb_queue_tail(&(info->txq), skb);
602
603 bluecard_write_wakeup(info);
604
605 return 0;
606}
607
608
609
610/* ======================== HCI interface ======================== */
611
612
613static int bluecard_hci_flush(struct hci_dev *hdev)
614{
d664cd98 615 struct bluecard_info *info = hci_get_drvdata(hdev);
1da177e4
LT		 616
617 /* Drop TX queue */
618 skb_queue_purge(&(info->txq));
619
620 return 0;
621}
622
623
624static int bluecard_hci_open(struct hci_dev *hdev)
625{
d664cd98 626 struct bluecard_info *info = hci_get_drvdata(hdev);
1da177e4
LT		 627
628 if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
629 bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE);
630
631 if (test_and_set_bit(HCI_RUNNING, &(hdev->flags)))
632 return 0;
633
634 if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
74ad8fda
AE		 635 unsigned int iobase = info->p_dev->resource[0]->start;
636
1da177e4
LT		 637 /* Enable LED */
638 outb(0x08 | 0x20, iobase + 0x30);
639 }
640
641 return 0;
642}
643
644
645static int bluecard_hci_close(struct hci_dev *hdev)
646{
d664cd98 647 struct bluecard_info *info = hci_get_drvdata(hdev);
1da177e4
LT		 648
649 if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
650 return 0;
651
652 bluecard_hci_flush(hdev);
653
654 if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
74ad8fda
AE		 655 unsigned int iobase = info->p_dev->resource[0]->start;
656
1da177e4
LT		 657 /* Disable LED */
658 outb(0x00, iobase + 0x30);
659 }
660
661 return 0;
662}
663
664
7bd8f09f 665static int bluecard_hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1da177e4 666{
d664cd98 667 struct bluecard_info *info = hci_get_drvdata(hdev);
1da177e4 668
0d48d939 669 switch (bt_cb(skb)->pkt_type) {
1da177e4
LT		 670 case HCI_COMMAND_PKT:
671 hdev->stat.cmd_tx++;
672 break;
673 case HCI_ACLDATA_PKT:
674 hdev->stat.acl_tx++;
675 break;
676 case HCI_SCODATA_PKT:
677 hdev->stat.sco_tx++;
678 break;
ce9b0048 679 }
1da177e4
LT		 680
681 /* Prepend skb with frame type */
0d48d939 682 memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
1da177e4
LT		 683 skb_queue_tail(&(info->txq), skb);
684
685 bluecard_write_wakeup(info);
686
687 return 0;
688}
689
690
1da177e4
LT		 691
692/* ======================== Card services HCI interaction ======================== */
693
694
d664cd98 695static int bluecard_open(struct bluecard_info *info)
1da177e4 696{
9a017a91 697 unsigned int iobase = info->p_dev->resource[0]->start;
1da177e4
LT		 698 struct hci_dev *hdev;
699 unsigned char id;
700
701 spin_lock_init(&(info->lock));
702
703 init_timer(&(info->timer));
704 info->timer.function = &bluecard_activity_led_timeout;
705 info->timer.data = (u_long)info;
706
707 skb_queue_head_init(&(info->txq));
708
709 info->rx_state = RECV_WAIT_PACKET_TYPE;
710 info->rx_count = 0;
711 info->rx_skb = NULL;
712
713 /* Initialize HCI device */
714 hdev = hci_alloc_dev();
715 if (!hdev) {
716 BT_ERR("Can't allocate HCI device");
717 return -ENOMEM;
718 }
719
720 info->hdev = hdev;
721
c13854ce 722 hdev->bus = HCI_PCCARD;
155961e8 723 hci_set_drvdata(hdev, info);
27d35284 724 SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
1da177e4 725
87d82ee2
MH		 726 hdev->open = bluecard_hci_open;
727 hdev->close = bluecard_hci_close;
728 hdev->flush = bluecard_hci_flush;
729 hdev->send = bluecard_hci_send_frame;
1da177e4 730
1da177e4
LT		 731 id = inb(iobase + 0x30);
732
733 if ((id & 0x0f) == 0x02)
734 set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state));
735
736 if (id & 0x10)
737 set_bit(CARD_HAS_POWER_LED, &(info->hw_state));
738
739 if (id & 0x20)
740 set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state));
741
742 /* Reset card */
743 info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
744 outb(info->ctrl_reg, iobase + REG_CONTROL);
745
746 /* Turn FPGA off */
747 outb(0x80, iobase + 0x30);
748
749 /* Wait some time */
750 msleep(10);
751
752 /* Turn FPGA on */
753 outb(0x00, iobase + 0x30);
754
755 /* Activate card */
756 info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU;
757 outb(info->ctrl_reg, iobase + REG_CONTROL);
758
759 /* Enable interrupt */
760 outb(0xff, iobase + REG_INTERRUPT);
761 info->ctrl_reg |= REG_CONTROL_INTERRUPT;
762 outb(info->ctrl_reg, iobase + REG_CONTROL);
763
764 if ((id & 0x0f) == 0x03) {
765 /* Disable RTS */
766 info->ctrl_reg |= REG_CONTROL_RTS;
767 outb(info->ctrl_reg, iobase + REG_CONTROL);
768
769 /* Set baud rate */
770 info->ctrl_reg |= 0x03;
771 outb(info->ctrl_reg, iobase + REG_CONTROL);
772
773 /* Enable RTS */
774 info->ctrl_reg &= ~REG_CONTROL_RTS;
775 outb(info->ctrl_reg, iobase + REG_CONTROL);
776
777 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
778 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
779 set_bit(XMIT_SENDING_READY, &(info->tx_state));
780 }
781
782 /* Start the RX buffers */
783 outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
784 outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
785
786 /* Signal that the hardware is ready */
787 set_bit(CARD_READY, &(info->hw_state));
788
789 /* Drop TX queue */
790 skb_queue_purge(&(info->txq));
791
792 /* Control the point at which RTS is enabled */
793 outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL);
794
795 /* Timeout before it is safe to send the first HCI packet */
796 msleep(1250);
797
798 /* Register HCI device */
799 if (hci_register_dev(hdev) < 0) {
800 BT_ERR("Can't register HCI device");
801 info->hdev = NULL;
802 hci_free_dev(hdev);
803 return -ENODEV;
804 }
805
806 return 0;
807}
808
809
d664cd98 810static int bluecard_close(struct bluecard_info *info)
1da177e4 811{
9a017a91 812 unsigned int iobase = info->p_dev->resource[0]->start;
1da177e4
LT		 813 struct hci_dev *hdev = info->hdev;
814
815 if (!hdev)
816 return -ENODEV;
817
818 bluecard_hci_close(hdev);
819
820 clear_bit(CARD_READY, &(info->hw_state));
821
822 /* Reset card */
823 info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
824 outb(info->ctrl_reg, iobase + REG_CONTROL);
825
826 /* Turn FPGA off */
827 outb(0x80, iobase + 0x30);
828
13ea4015 829 hci_unregister_dev(hdev);
1da177e4
LT		 830 hci_free_dev(hdev);
831
832 return 0;
833}
834
15b99ac1 835static int bluecard_probe(struct pcmcia_device *link)
1da177e4 836{
d664cd98 837 struct bluecard_info *info;
1da177e4
LT		 838
839 /* Create new info device */
1a31c602 840 info = devm_kzalloc(&link->dev, sizeof(*info), GFP_KERNEL);
1da177e4 841 if (!info)
f8cfa618 842 return -ENOMEM;
1da177e4 843
fba395ee 844 info->p_dev = link;
1da177e4
LT		 845 link->priv = info;
846
1ac71e5a 847 link->config_flags |= CONF_ENABLE_IRQ;
1da177e4 848
15b99ac1 849 return bluecard_config(link);
1da177e4
LT		 850}
851
852
fba395ee 853static void bluecard_detach(struct pcmcia_device *link)
1da177e4 854{
e2d40963 855 bluecard_release(link);
1da177e4
LT		 856}
857
858
15b99ac1 859static int bluecard_config(struct pcmcia_device *link)
1da177e4 860{
d664cd98 861 struct bluecard_info *info = link->priv;
af2b3b50 862 int i, n;
1da177e4 863
7feabb64 864 link->config_index = 0x20;
90abdc3b
DB		 865
866 link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
867 link->resource[0]->end = 64;
868 link->io_lines = 6;
1da177e4
LT		 869
870 for (n = 0; n < 0x400; n += 0x40) {
90abdc3b
DB		 871 link->resource[0]->start = n ^ 0x300;
872 i = pcmcia_request_io(link);
4c89e88b 873 if (i == 0)
1da177e4
LT		 874 break;
875 }
876
9ac3e58c 877 if (i != 0)
1da177e4 878 goto failed;
1da177e4 879
eb14120f 880 i = pcmcia_request_irq(link, bluecard_interrupt);
9ac3e58c 881 if (i != 0)
eb14120f 882 goto failed;
1da177e4 883
1ac71e5a 884 i = pcmcia_enable_device(link);
9ac3e58c 885 if (i != 0)
1da177e4 886 goto failed;
1da177e4
LT		 887
888 if (bluecard_open(info) != 0)
889 goto failed;
890
15b99ac1 891 return 0;
1da177e4 892
1da177e4
LT		 893failed:
894 bluecard_release(link);
15b99ac1 895 return -ENODEV;
1da177e4
LT		 896}
897
898
fba395ee 899static void bluecard_release(struct pcmcia_device *link)
1da177e4 900{
d664cd98 901 struct bluecard_info *info = link->priv;
1da177e4 902
e2d40963 903 bluecard_close(info);
1da177e4 904
d8ff9cdf 905 del_timer_sync(&(info->timer));
1da177e4 906
fba395ee 907 pcmcia_disable_device(link);
1da177e4
LT		 908}
909
25f8f54f 910static const struct pcmcia_device_id bluecard_ids[] = {
7f70cb6d
DB		 911 PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e),
912 PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c),
913 PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab),
914 PCMCIA_DEVICE_NULL
915};
916MODULE_DEVICE_TABLE(pcmcia, bluecard_ids);
917
1da177e4
LT		 918static struct pcmcia_driver bluecard_driver = {
919 .owner = THIS_MODULE,
2e9b981a 920 .name = "bluecard_cs",
15b99ac1 921 .probe = bluecard_probe,
cc3b4866 922 .remove = bluecard_detach,
7f70cb6d 923 .id_table = bluecard_ids,
1da177e4 924};
e0c005f4 925module_pcmcia_driver(bluecard_driver);
Linux 6.x block layer and io_uring tree(s)