blob: c0b3b55769921da4d8bd9c52c12924cfa06908cc [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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
Linus Torvalds1da177e2005-04-16 15:20:36 -070023#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>
Cody Resterc89827e2010-07-01 21:27:44 -070040#include <linux/io.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070041
Linus Torvalds1da177e2005-04-16 15:20:36 -070042#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
Himangi Saraogid664cd92014-08-13 14:53:31 +053064struct bluecard_info {
Dominik Brodowskifd238232006-03-05 10:45:09 +010065 struct pcmcia_device *p_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -070066
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 */
Himangi Saraogid664cd92014-08-13 14:53:31 +053081};
Linus Torvalds1da177e2005-04-16 15:20:36 -070082
83
Dominik Brodowski15b99ac2006-03-31 17:26:06 +020084static int bluecard_config(struct pcmcia_device *link);
Dominik Brodowskifba395e2006-03-31 17:21:06 +020085static void bluecard_release(struct pcmcia_device *link);
Linus Torvalds1da177e2005-04-16 15:20:36 -070086
Dominik Brodowskicc3b4862005-11-14 21:23:14 +010087static void bluecard_detach(struct pcmcia_device *p_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -070088
Linus Torvalds1da177e2005-04-16 15:20:36 -070089
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{
Himangi Saraogid664cd92014-08-13 14:53:31 +0530160 struct bluecard_info *info = (struct bluecard_info *)arg;
Dominik Brodowski9a017a92010-07-24 15:58:54 +0200161 unsigned int iobase = info->p_dev->resource[0]->start;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162
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
Himangi Saraogid664cd92014-08-13 14:53:31 +0530176static void bluecard_enable_activity_led(struct bluecard_info *info)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177{
Dominik Brodowski9a017a92010-07-24 15:58:54 +0200178 unsigned int iobase = info->p_dev->resource[0]->start;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179
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
Himangi Saraogid664cd92014-08-13 14:53:31 +0530218static void bluecard_write_wakeup(struct bluecard_info *info)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219{
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 {
Gustavo Padovanfc5fef62012-05-23 04:04:19 -0300234 unsigned int iobase = info->p_dev->resource[0]->start;
235 unsigned int offset;
236 unsigned char command;
237 unsigned long ready_bit;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238 register struct sk_buff *skb;
Gustavo Padovanfc5fef62012-05-23 04:04:19 -0300239 int len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240
241 clear_bit(XMIT_WAKEUP, &(info->tx_state));
242
Dominik Brodowskie2d40962006-03-02 00:09:29 +0100243 if (!pcmcia_dev_present(info->p_dev))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700244 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
Valentin Iliea08b15e2013-08-12 18:46:00 +0300260 skb = skb_dequeue(&(info->txq));
261 if (!skb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262 break;
263
Marcel Holtmann618e8bc2015-11-05 07:33:56 +0100264 if (hci_skb_pkt_type(skb) & 0x80) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700265 /* 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
Marcel Holtmann618e8bc2015-11-05 07:33:56 +0100282 if (hci_skb_pkt_type(skb) & 0x80) {
Peter Zijlstra7259f0d2006-10-29 22:46:36 -0800283 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700284 DEFINE_WAIT(wait);
285
286 unsigned char baud_reg;
287
Marcel Holtmann618e8bc2015-11-05 07:33:56 +0100288 switch (hci_skb_pkt_type(skb)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700289 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
Himangi Saraogid664cd92014-08-13 14:53:31 +0530371static void bluecard_receive(struct bluecard_info *info,
372 unsigned int offset)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373{
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
Dominik Brodowski9a017a92010-07-24 15:58:54 +0200383 iobase = info->p_dev->resource[0]->start;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700384
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 */
Prasanna Karthik54b5b342015-09-25 07:59:18 +0000393 if (!info->rx_skb) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700394 info->rx_state = RECV_WAIT_PACKET_TYPE;
395 info->rx_count = 0;
Valentin Iliea08b15e2013-08-12 18:46:00 +0300396 info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
397 if (!info->rx_skb) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398 BT_ERR("Can't allocate mem for new packet");
399 return;
400 }
401 }
402
403 if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
404
Marcel Holtmann618e8bc2015-11-05 07:33:56 +0100405 hci_skb_pkt_type(info->rx_skb) = buf[i];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406
Marcel Holtmann618e8bc2015-11-05 07:33:56 +0100407 switch (hci_skb_pkt_type(info->rx_skb)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408
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 */
Marcel Holtmann618e8bc2015-11-05 07:33:56 +0100439 BT_ERR("Unknown HCI packet with type 0x%02x received",
440 hci_skb_pkt_type(info->rx_skb));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700441 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:
Arnaldo Carvalho de Melo2a123b82007-03-27 18:38:07 -0300464 eh = hci_event_hdr(info->rx_skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700465 info->rx_state = RECV_WAIT_DATA;
466 info->rx_count = eh->plen;
467 break;
468
469 case RECV_WAIT_ACL_HEADER:
Arnaldo Carvalho de Melo2a123b82007-03-27 18:38:07 -0300470 ah = hci_acl_hdr(info->rx_skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700471 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:
Arnaldo Carvalho de Melo2a123b82007-03-27 18:38:07 -0300477 sh = hci_sco_hdr(info->rx_skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700478 info->rx_state = RECV_WAIT_DATA;
479 info->rx_count = sh->dlen;
480 break;
481
482 case RECV_WAIT_DATA:
Marcel Holtmanne1a26172013-10-10 16:52:43 -0700483 hci_recv_frame(info->hdev, info->rx_skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700484 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
David Howells7d12e782006-10-05 14:55:46 +0100500static irqreturn_t bluecard_interrupt(int irq, void *dev_inst)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501{
Himangi Saraogid664cd92014-08-13 14:53:31 +0530502 struct bluecard_info *info = dev_inst;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700503 unsigned int iobase;
504 unsigned char reg;
505
Mike Frysinger74278472009-09-14 13:43:49 -0400506 if (!info || !info->hdev)
507 /* our irq handler is shared */
508 return IRQ_NONE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700509
510 if (!test_bit(CARD_READY, &(info->hw_state)))
511 return IRQ_HANDLED;
512
Dominik Brodowski9a017a92010-07-24 15:58:54 +0200513 iobase = info->p_dev->resource[0]->start;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700514
515 spin_lock(&(info->lock));
516
517 /* Disable interrupt */
518 info->ctrl_reg &= ~REG_CONTROL_INTERRUPT;
519 outb(info->ctrl_reg, iobase + REG_CONTROL);
520
521 reg = inb(iobase + REG_INTERRUPT);
522
523 if ((reg != 0x00) && (reg != 0xff)) {
524
525 if (reg & 0x04) {
526 bluecard_receive(info, 0x00);
527 outb(0x04, iobase + REG_INTERRUPT);
528 outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
529 }
530
531 if (reg & 0x08) {
532 bluecard_receive(info, 0x10);
533 outb(0x08, iobase + REG_INTERRUPT);
534 outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
535 }
536
537 if (reg & 0x01) {
538 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
539 outb(0x01, iobase + REG_INTERRUPT);
540 bluecard_write_wakeup(info);
541 }
542
543 if (reg & 0x02) {
544 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
545 outb(0x02, iobase + REG_INTERRUPT);
546 bluecard_write_wakeup(info);
547 }
548
549 }
550
551 /* Enable interrupt */
552 info->ctrl_reg |= REG_CONTROL_INTERRUPT;
553 outb(info->ctrl_reg, iobase + REG_CONTROL);
554
555 spin_unlock(&(info->lock));
556
557 return IRQ_HANDLED;
558}
559
560
561
562/* ======================== Device specific HCI commands ======================== */
563
564
565static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud)
566{
Himangi Saraogid664cd92014-08-13 14:53:31 +0530567 struct bluecard_info *info = hci_get_drvdata(hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700568 struct sk_buff *skb;
569
570 /* Ericsson baud rate command */
571 unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 };
572
Valentin Iliea08b15e2013-08-12 18:46:00 +0300573 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
574 if (!skb) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700575 BT_ERR("Can't allocate mem for new packet");
576 return -1;
577 }
578
579 switch (baud) {
580 case 460800:
581 cmd[4] = 0x00;
Marcel Holtmann618e8bc2015-11-05 07:33:56 +0100582 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_460800;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700583 break;
584 case 230400:
585 cmd[4] = 0x01;
Marcel Holtmann618e8bc2015-11-05 07:33:56 +0100586 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_230400;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700587 break;
588 case 115200:
589 cmd[4] = 0x02;
Marcel Holtmann618e8bc2015-11-05 07:33:56 +0100590 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_115200;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700591 break;
592 case 57600:
593 /* Fall through... */
594 default:
595 cmd[4] = 0x03;
Marcel Holtmann618e8bc2015-11-05 07:33:56 +0100596 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_57600;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700597 break;
598 }
599
600 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
601
602 skb_queue_tail(&(info->txq), skb);
603
604 bluecard_write_wakeup(info);
605
606 return 0;
607}
608
609
610
611/* ======================== HCI interface ======================== */
612
613
614static int bluecard_hci_flush(struct hci_dev *hdev)
615{
Himangi Saraogid664cd92014-08-13 14:53:31 +0530616 struct bluecard_info *info = hci_get_drvdata(hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700617
618 /* Drop TX queue */
619 skb_queue_purge(&(info->txq));
620
621 return 0;
622}
623
624
625static int bluecard_hci_open(struct hci_dev *hdev)
626{
Himangi Saraogid664cd92014-08-13 14:53:31 +0530627 struct bluecard_info *info = hci_get_drvdata(hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700628
629 if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
630 bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE);
631
Linus Torvalds1da177e2005-04-16 15:20:36 -0700632 if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
Andrei Emeltchenko74ad8fd2012-06-29 14:58:07 +0300633 unsigned int iobase = info->p_dev->resource[0]->start;
634
Linus Torvalds1da177e2005-04-16 15:20:36 -0700635 /* Enable LED */
636 outb(0x08 | 0x20, iobase + 0x30);
637 }
638
639 return 0;
640}
641
642
643static int bluecard_hci_close(struct hci_dev *hdev)
644{
Himangi Saraogid664cd92014-08-13 14:53:31 +0530645 struct bluecard_info *info = hci_get_drvdata(hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700646
Linus Torvalds1da177e2005-04-16 15:20:36 -0700647 bluecard_hci_flush(hdev);
648
649 if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) {
Andrei Emeltchenko74ad8fd2012-06-29 14:58:07 +0300650 unsigned int iobase = info->p_dev->resource[0]->start;
651
Linus Torvalds1da177e2005-04-16 15:20:36 -0700652 /* Disable LED */
653 outb(0x00, iobase + 0x30);
654 }
655
656 return 0;
657}
658
659
Marcel Holtmann7bd8f092013-10-11 06:19:18 -0700660static int bluecard_hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700661{
Himangi Saraogid664cd92014-08-13 14:53:31 +0530662 struct bluecard_info *info = hci_get_drvdata(hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700663
Marcel Holtmann618e8bc2015-11-05 07:33:56 +0100664 switch (hci_skb_pkt_type(skb)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700665 case HCI_COMMAND_PKT:
666 hdev->stat.cmd_tx++;
667 break;
668 case HCI_ACLDATA_PKT:
669 hdev->stat.acl_tx++;
670 break;
671 case HCI_SCODATA_PKT:
672 hdev->stat.sco_tx++;
673 break;
Peter Senna Tschudince9b0042012-09-07 17:24:40 +0200674 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700675
676 /* Prepend skb with frame type */
Marcel Holtmann618e8bc2015-11-05 07:33:56 +0100677 memcpy(skb_push(skb, 1), &hci_skb_pkt_type(skb), 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700678 skb_queue_tail(&(info->txq), skb);
679
680 bluecard_write_wakeup(info);
681
682 return 0;
683}
684
685
Linus Torvalds1da177e2005-04-16 15:20:36 -0700686
687/* ======================== Card services HCI interaction ======================== */
688
689
Himangi Saraogid664cd92014-08-13 14:53:31 +0530690static int bluecard_open(struct bluecard_info *info)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700691{
Dominik Brodowski9a017a92010-07-24 15:58:54 +0200692 unsigned int iobase = info->p_dev->resource[0]->start;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700693 struct hci_dev *hdev;
694 unsigned char id;
695
696 spin_lock_init(&(info->lock));
697
698 init_timer(&(info->timer));
699 info->timer.function = &bluecard_activity_led_timeout;
700 info->timer.data = (u_long)info;
701
702 skb_queue_head_init(&(info->txq));
703
704 info->rx_state = RECV_WAIT_PACKET_TYPE;
705 info->rx_count = 0;
706 info->rx_skb = NULL;
707
708 /* Initialize HCI device */
709 hdev = hci_alloc_dev();
710 if (!hdev) {
711 BT_ERR("Can't allocate HCI device");
712 return -ENOMEM;
713 }
714
715 info->hdev = hdev;
716
Marcel Holtmannc13854c2010-02-08 15:27:07 +0100717 hdev->bus = HCI_PCCARD;
David Herrmann155961e2012-02-09 21:58:32 +0100718 hci_set_drvdata(hdev, info);
Marcel Holtmann27d35282006-07-03 10:02:37 +0200719 SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700720
Marcel Holtmann87d82ee2013-10-10 10:50:01 -0700721 hdev->open = bluecard_hci_open;
722 hdev->close = bluecard_hci_close;
723 hdev->flush = bluecard_hci_flush;
724 hdev->send = bluecard_hci_send_frame;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700725
Linus Torvalds1da177e2005-04-16 15:20:36 -0700726 id = inb(iobase + 0x30);
727
728 if ((id & 0x0f) == 0x02)
729 set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state));
730
731 if (id & 0x10)
732 set_bit(CARD_HAS_POWER_LED, &(info->hw_state));
733
734 if (id & 0x20)
735 set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state));
736
737 /* Reset card */
738 info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
739 outb(info->ctrl_reg, iobase + REG_CONTROL);
740
741 /* Turn FPGA off */
742 outb(0x80, iobase + 0x30);
743
744 /* Wait some time */
745 msleep(10);
746
747 /* Turn FPGA on */
748 outb(0x00, iobase + 0x30);
749
750 /* Activate card */
751 info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU;
752 outb(info->ctrl_reg, iobase + REG_CONTROL);
753
754 /* Enable interrupt */
755 outb(0xff, iobase + REG_INTERRUPT);
756 info->ctrl_reg |= REG_CONTROL_INTERRUPT;
757 outb(info->ctrl_reg, iobase + REG_CONTROL);
758
759 if ((id & 0x0f) == 0x03) {
760 /* Disable RTS */
761 info->ctrl_reg |= REG_CONTROL_RTS;
762 outb(info->ctrl_reg, iobase + REG_CONTROL);
763
764 /* Set baud rate */
765 info->ctrl_reg |= 0x03;
766 outb(info->ctrl_reg, iobase + REG_CONTROL);
767
768 /* Enable RTS */
769 info->ctrl_reg &= ~REG_CONTROL_RTS;
770 outb(info->ctrl_reg, iobase + REG_CONTROL);
771
772 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
773 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
774 set_bit(XMIT_SENDING_READY, &(info->tx_state));
775 }
776
777 /* Start the RX buffers */
778 outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
779 outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
780
781 /* Signal that the hardware is ready */
782 set_bit(CARD_READY, &(info->hw_state));
783
784 /* Drop TX queue */
785 skb_queue_purge(&(info->txq));
786
787 /* Control the point at which RTS is enabled */
788 outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL);
789
790 /* Timeout before it is safe to send the first HCI packet */
791 msleep(1250);
792
793 /* Register HCI device */
794 if (hci_register_dev(hdev) < 0) {
795 BT_ERR("Can't register HCI device");
796 info->hdev = NULL;
797 hci_free_dev(hdev);
798 return -ENODEV;
799 }
800
801 return 0;
802}
803
804
Himangi Saraogid664cd92014-08-13 14:53:31 +0530805static int bluecard_close(struct bluecard_info *info)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700806{
Dominik Brodowski9a017a92010-07-24 15:58:54 +0200807 unsigned int iobase = info->p_dev->resource[0]->start;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700808 struct hci_dev *hdev = info->hdev;
809
810 if (!hdev)
811 return -ENODEV;
812
813 bluecard_hci_close(hdev);
814
815 clear_bit(CARD_READY, &(info->hw_state));
816
817 /* Reset card */
818 info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
819 outb(info->ctrl_reg, iobase + REG_CONTROL);
820
821 /* Turn FPGA off */
822 outb(0x80, iobase + 0x30);
823
David Herrmann13ea4012011-10-26 10:43:18 +0200824 hci_unregister_dev(hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700825 hci_free_dev(hdev);
826
827 return 0;
828}
829
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200830static int bluecard_probe(struct pcmcia_device *link)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700831{
Himangi Saraogid664cd92014-08-13 14:53:31 +0530832 struct bluecard_info *info;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700833
834 /* Create new info device */
Sachin Kamat1a31c602012-07-27 12:38:33 +0530835 info = devm_kzalloc(&link->dev, sizeof(*info), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700836 if (!info)
Dominik Brodowskif8cfa612005-11-14 21:25:51 +0100837 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700838
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200839 info->p_dev = link;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700840 link->priv = info;
841
Dominik Brodowski1ac71e52010-07-29 19:27:09 +0200842 link->config_flags |= CONF_ENABLE_IRQ;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700843
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200844 return bluecard_config(link);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700845}
846
847
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200848static void bluecard_detach(struct pcmcia_device *link)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700849{
Dominik Brodowskie2d40962006-03-02 00:09:29 +0100850 bluecard_release(link);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700851}
852
853
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200854static int bluecard_config(struct pcmcia_device *link)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700855{
Himangi Saraogid664cd92014-08-13 14:53:31 +0530856 struct bluecard_info *info = link->priv;
Dominik Brodowskiaf2b3b52006-10-25 21:49:27 -0400857 int i, n;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700858
Dominik Brodowski7feabb62010-07-29 18:35:47 +0200859 link->config_index = 0x20;
Dominik Brodowski90abdc32010-07-24 17:23:51 +0200860
861 link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
862 link->resource[0]->end = 64;
863 link->io_lines = 6;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700864
865 for (n = 0; n < 0x400; n += 0x40) {
Dominik Brodowski90abdc32010-07-24 17:23:51 +0200866 link->resource[0]->start = n ^ 0x300;
867 i = pcmcia_request_io(link);
Dominik Brodowski4c89e882008-08-03 10:07:45 +0200868 if (i == 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700869 break;
870 }
871
Dominik Brodowski9ac3e582009-10-24 15:45:06 +0200872 if (i != 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700873 goto failed;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700874
Dominik Brodowskieb141202010-03-07 12:21:16 +0100875 i = pcmcia_request_irq(link, bluecard_interrupt);
Dominik Brodowski9ac3e582009-10-24 15:45:06 +0200876 if (i != 0)
Dominik Brodowskieb141202010-03-07 12:21:16 +0100877 goto failed;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700878
Dominik Brodowski1ac71e52010-07-29 19:27:09 +0200879 i = pcmcia_enable_device(link);
Dominik Brodowski9ac3e582009-10-24 15:45:06 +0200880 if (i != 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700881 goto failed;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700882
883 if (bluecard_open(info) != 0)
884 goto failed;
885
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200886 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700887
Linus Torvalds1da177e2005-04-16 15:20:36 -0700888failed:
889 bluecard_release(link);
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200890 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700891}
892
893
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200894static void bluecard_release(struct pcmcia_device *link)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700895{
Himangi Saraogid664cd92014-08-13 14:53:31 +0530896 struct bluecard_info *info = link->priv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700897
Dominik Brodowskie2d40962006-03-02 00:09:29 +0100898 bluecard_close(info);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700899
Thomas Gleixnerd8ff9cd2014-03-23 15:09:31 +0000900 del_timer_sync(&(info->timer));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700901
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200902 pcmcia_disable_device(link);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700903}
904
Joe Perches25f8f542011-05-03 19:29:01 -0700905static const struct pcmcia_device_id bluecard_ids[] = {
Dominik Brodowski7f70cb62005-06-27 16:28:35 -0700906 PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e),
907 PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c),
908 PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab),
909 PCMCIA_DEVICE_NULL
910};
911MODULE_DEVICE_TABLE(pcmcia, bluecard_ids);
912
Linus Torvalds1da177e2005-04-16 15:20:36 -0700913static struct pcmcia_driver bluecard_driver = {
914 .owner = THIS_MODULE,
Dominik Brodowski2e9b9812010-08-08 11:36:26 +0200915 .name = "bluecard_cs",
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200916 .probe = bluecard_probe,
Dominik Brodowskicc3b4862005-11-14 21:23:14 +0100917 .remove = bluecard_detach,
Dominik Brodowski7f70cb62005-06-27 16:28:35 -0700918 .id_table = bluecard_ids,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700919};
H Hartley Sweetene0c005f2013-03-06 11:26:24 -0700920module_pcmcia_driver(bluecard_driver);