blob: 54713833951a9ddd6fa34780a263942863e242a2 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 *
3 * Driver for the 3Com Bluetooth PCMCIA card
4 *
5 * Copyright (C) 2001-2002 Marcel Holtmann <marcel@holtmann.org>
6 * Jose Orlando Pereira <jop@di.uminho.pt>
7 *
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation;
12 *
13 * Software distributed under the License is distributed on an "AS
14 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
15 * implied. See the License for the specific language governing
16 * rights and limitations under the License.
17 *
18 * The initial developer of the original code is David A. Hinds
19 * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
20 * are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
21 *
22 */
23
Linus Torvalds1da177e2005-04-16 15:20:36 -070024#include <linux/module.h>
25
26#include <linux/kernel.h>
27#include <linux/init.h>
28#include <linux/slab.h>
29#include <linux/types.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070030#include <linux/delay.h>
31#include <linux/errno.h>
32#include <linux/ptrace.h>
33#include <linux/ioport.h>
34#include <linux/spinlock.h>
35#include <linux/moduleparam.h>
36
37#include <linux/skbuff.h>
38#include <linux/string.h>
39#include <linux/serial.h>
40#include <linux/serial_reg.h>
41#include <linux/bitops.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070042#include <asm/io.h>
43
44#include <linux/device.h>
45#include <linux/firmware.h>
46
Linus Torvalds1da177e2005-04-16 15:20:36 -070047#include <pcmcia/cistpl.h>
48#include <pcmcia/ciscode.h>
49#include <pcmcia/ds.h>
50#include <pcmcia/cisreg.h>
51
52#include <net/bluetooth/bluetooth.h>
53#include <net/bluetooth/hci_core.h>
54
55
56
57/* ======================== Module parameters ======================== */
58
59
Marcel Holtmann63fbd242008-08-18 13:23:53 +020060MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
Linus Torvalds1da177e2005-04-16 15:20:36 -070061MODULE_DESCRIPTION("Bluetooth driver for the 3Com Bluetooth PCMCIA card");
62MODULE_LICENSE("GPL");
Marcel Holtmann23121192007-02-17 23:59:02 +010063MODULE_FIRMWARE("BT3CPCC.bin");
Linus Torvalds1da177e2005-04-16 15:20:36 -070064
65
66
67/* ======================== Local structures ======================== */
68
69
Himangi Saraogi3bbaf812014-08-13 14:49:56 +053070struct bt3c_info {
Dominik Brodowskifd238232006-03-05 10:45:09 +010071 struct pcmcia_device *p_dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -070072
73 struct hci_dev *hdev;
74
75 spinlock_t lock; /* For serializing operations */
76
77 struct sk_buff_head txq;
78 unsigned long tx_state;
79
80 unsigned long rx_state;
81 unsigned long rx_count;
82 struct sk_buff *rx_skb;
Himangi Saraogi3bbaf812014-08-13 14:49:56 +053083};
Linus Torvalds1da177e2005-04-16 15:20:36 -070084
85
Dominik Brodowski15b99ac2006-03-31 17:26:06 +020086static int bt3c_config(struct pcmcia_device *link);
Dominik Brodowskifba395e2006-03-31 17:21:06 +020087static void bt3c_release(struct pcmcia_device *link);
Linus Torvalds1da177e2005-04-16 15:20:36 -070088
Dominik Brodowskicc3b4862005-11-14 21:23:14 +010089static void bt3c_detach(struct pcmcia_device *p_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -070090
Linus Torvalds1da177e2005-04-16 15:20:36 -070091
92/* Transmit states */
93#define XMIT_SENDING 1
94#define XMIT_WAKEUP 2
95#define XMIT_WAITING 8
96
97/* Receiver states */
98#define RECV_WAIT_PACKET_TYPE 0
99#define RECV_WAIT_EVENT_HEADER 1
100#define RECV_WAIT_ACL_HEADER 2
101#define RECV_WAIT_SCO_HEADER 3
102#define RECV_WAIT_DATA 4
103
104
105
106/* ======================== Special I/O functions ======================== */
107
108
109#define DATA_L 0
110#define DATA_H 1
111#define ADDR_L 2
112#define ADDR_H 3
113#define CONTROL 4
114
115
116static inline void bt3c_address(unsigned int iobase, unsigned short addr)
117{
118 outb(addr & 0xff, iobase + ADDR_L);
119 outb((addr >> 8) & 0xff, iobase + ADDR_H);
120}
121
122
123static inline void bt3c_put(unsigned int iobase, unsigned short value)
124{
125 outb(value & 0xff, iobase + DATA_L);
126 outb((value >> 8) & 0xff, iobase + DATA_H);
127}
128
129
130static inline void bt3c_io_write(unsigned int iobase, unsigned short addr, unsigned short value)
131{
132 bt3c_address(iobase, addr);
133 bt3c_put(iobase, value);
134}
135
136
137static inline unsigned short bt3c_get(unsigned int iobase)
138{
139 unsigned short value = inb(iobase + DATA_L);
140
141 value |= inb(iobase + DATA_H) << 8;
142
143 return value;
144}
145
146
147static inline unsigned short bt3c_read(unsigned int iobase, unsigned short addr)
148{
149 bt3c_address(iobase, addr);
150
151 return bt3c_get(iobase);
152}
153
154
155
156/* ======================== Interrupt handling ======================== */
157
158
159static int bt3c_write(unsigned int iobase, int fifo_size, __u8 *buf, int len)
160{
161 int actual = 0;
162
163 bt3c_address(iobase, 0x7080);
164
165 /* Fill FIFO with current frame */
166 while (actual < len) {
167 /* Transmit next byte */
168 bt3c_put(iobase, buf[actual]);
169 actual++;
170 }
171
172 bt3c_io_write(iobase, 0x7005, actual);
173
174 return actual;
175}
176
177
Himangi Saraogi3bbaf812014-08-13 14:49:56 +0530178static void bt3c_write_wakeup(struct bt3c_info *info)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179{
180 if (!info) {
181 BT_ERR("Unknown device");
182 return;
183 }
184
185 if (test_and_set_bit(XMIT_SENDING, &(info->tx_state)))
186 return;
187
188 do {
Gustavo Padovanfc5fef62012-05-23 04:04:19 -0300189 unsigned int iobase = info->p_dev->resource[0]->start;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190 register struct sk_buff *skb;
Gustavo Padovanfc5fef62012-05-23 04:04:19 -0300191 int len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192
Dominik Brodowskie2d40962006-03-02 00:09:29 +0100193 if (!pcmcia_dev_present(info->p_dev))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194 break;
195
Valentin Iliea08b15e2013-08-12 18:46:00 +0300196 skb = skb_dequeue(&(info->txq));
197 if (!skb) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198 clear_bit(XMIT_SENDING, &(info->tx_state));
199 break;
200 }
201
202 /* Send frame */
203 len = bt3c_write(iobase, 256, skb->data, skb->len);
204
Prasanna Karthikaebcecc2015-06-18 13:51:11 +0000205 if (len != skb->len)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206 BT_ERR("Very strange");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207
208 kfree_skb(skb);
209
210 info->hdev->stat.byte_tx += len;
211
212 } while (0);
213}
214
215
Himangi Saraogi3bbaf812014-08-13 14:49:56 +0530216static void bt3c_receive(struct bt3c_info *info)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217{
218 unsigned int iobase;
219 int size = 0, avail;
220
221 if (!info) {
222 BT_ERR("Unknown device");
223 return;
224 }
225
Dominik Brodowski9a017a92010-07-24 15:58:54 +0200226 iobase = info->p_dev->resource[0]->start;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700227
228 avail = bt3c_read(iobase, 0x7006);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700229
230 bt3c_address(iobase, 0x7480);
231 while (size < avail) {
232 size++;
233 info->hdev->stat.byte_rx++;
234
235 /* Allocate packet */
Prasanna Karthik7a1dc782015-09-25 09:02:18 +0000236 if (!info->rx_skb) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700237 info->rx_state = RECV_WAIT_PACKET_TYPE;
238 info->rx_count = 0;
Valentin Iliea08b15e2013-08-12 18:46:00 +0300239 info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
240 if (!info->rx_skb) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241 BT_ERR("Can't allocate mem for new packet");
242 return;
243 }
244 }
245
246
247 if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
248
Marcel Holtmann618e8bc2015-11-05 07:33:56 +0100249 hci_skb_pkt_type(info->rx_skb) = inb(iobase + DATA_L);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700250 inb(iobase + DATA_H);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700251
Marcel Holtmann618e8bc2015-11-05 07:33:56 +0100252 switch (hci_skb_pkt_type(info->rx_skb)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700253
254 case HCI_EVENT_PKT:
255 info->rx_state = RECV_WAIT_EVENT_HEADER;
256 info->rx_count = HCI_EVENT_HDR_SIZE;
257 break;
258
259 case HCI_ACLDATA_PKT:
260 info->rx_state = RECV_WAIT_ACL_HEADER;
261 info->rx_count = HCI_ACL_HDR_SIZE;
262 break;
263
264 case HCI_SCODATA_PKT:
265 info->rx_state = RECV_WAIT_SCO_HEADER;
266 info->rx_count = HCI_SCO_HDR_SIZE;
267 break;
268
269 default:
270 /* Unknown packet */
Marcel Holtmann618e8bc2015-11-05 07:33:56 +0100271 BT_ERR("Unknown HCI packet with type 0x%02x received",
272 hci_skb_pkt_type(info->rx_skb));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700273 info->hdev->stat.err_rx++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700274
275 kfree_skb(info->rx_skb);
276 info->rx_skb = NULL;
277 break;
278
279 }
280
281 } else {
282
283 __u8 x = inb(iobase + DATA_L);
284
Johannes Berg634fef62017-06-16 14:29:24 +0200285 skb_put_u8(info->rx_skb, x);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700286 inb(iobase + DATA_H);
287 info->rx_count--;
288
289 if (info->rx_count == 0) {
290
291 int dlen;
292 struct hci_event_hdr *eh;
293 struct hci_acl_hdr *ah;
294 struct hci_sco_hdr *sh;
295
296 switch (info->rx_state) {
297
298 case RECV_WAIT_EVENT_HEADER:
Arnaldo Carvalho de Melo2a123b862007-03-27 18:38:07 -0300299 eh = hci_event_hdr(info->rx_skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300 info->rx_state = RECV_WAIT_DATA;
301 info->rx_count = eh->plen;
302 break;
303
304 case RECV_WAIT_ACL_HEADER:
Arnaldo Carvalho de Melo2a123b862007-03-27 18:38:07 -0300305 ah = hci_acl_hdr(info->rx_skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306 dlen = __le16_to_cpu(ah->dlen);
307 info->rx_state = RECV_WAIT_DATA;
308 info->rx_count = dlen;
309 break;
310
311 case RECV_WAIT_SCO_HEADER:
Arnaldo Carvalho de Melo2a123b862007-03-27 18:38:07 -0300312 sh = hci_sco_hdr(info->rx_skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313 info->rx_state = RECV_WAIT_DATA;
314 info->rx_count = sh->dlen;
315 break;
316
317 case RECV_WAIT_DATA:
Marcel Holtmanne1a26172013-10-10 16:52:43 -0700318 hci_recv_frame(info->hdev, info->rx_skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700319 info->rx_skb = NULL;
320 break;
321
322 }
323
324 }
325
326 }
327
328 }
329
330 bt3c_io_write(iobase, 0x7006, 0x0000);
331}
332
333
David Howells7d12e782006-10-05 14:55:46 +0100334static irqreturn_t bt3c_interrupt(int irq, void *dev_inst)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700335{
Himangi Saraogi3bbaf812014-08-13 14:49:56 +0530336 struct bt3c_info *info = dev_inst;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337 unsigned int iobase;
338 int iir;
Alan Coxaafcf992008-10-05 17:35:41 +0100339 irqreturn_t r = IRQ_NONE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340
Mike Frysinger74278472009-09-14 13:43:49 -0400341 if (!info || !info->hdev)
342 /* our irq handler is shared */
343 return IRQ_NONE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344
Dominik Brodowski9a017a92010-07-24 15:58:54 +0200345 iobase = info->p_dev->resource[0]->start;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346
347 spin_lock(&(info->lock));
348
349 iir = inb(iobase + CONTROL);
350 if (iir & 0x80) {
351 int stat = bt3c_read(iobase, 0x7001);
352
353 if ((stat & 0xff) == 0x7f) {
354 BT_ERR("Very strange (stat=0x%04x)", stat);
355 } else if ((stat & 0xff) != 0xff) {
356 if (stat & 0x0020) {
Andre Haupt34a55ed2009-02-02 14:45:11 -0800357 int status = bt3c_read(iobase, 0x7002) & 0x10;
Marcel Holtmann2064ee32017-10-30 10:42:59 +0100358 bt_dev_info(info->hdev, "Antenna %s",
Andre Haupt34a55ed2009-02-02 14:45:11 -0800359 status ? "out" : "in");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360 }
361 if (stat & 0x0001)
362 bt3c_receive(info);
363 if (stat & 0x0002) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700364 clear_bit(XMIT_SENDING, &(info->tx_state));
365 bt3c_write_wakeup(info);
366 }
367
368 bt3c_io_write(iobase, 0x7001, 0x0000);
369
370 outb(iir, iobase + CONTROL);
371 }
Alan Coxaafcf992008-10-05 17:35:41 +0100372 r = IRQ_HANDLED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373 }
374
375 spin_unlock(&(info->lock));
376
Alan Coxaafcf992008-10-05 17:35:41 +0100377 return r;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378}
379
380
381
382/* ======================== HCI interface ======================== */
383
384
385static int bt3c_hci_flush(struct hci_dev *hdev)
386{
Himangi Saraogi3bbaf812014-08-13 14:49:56 +0530387 struct bt3c_info *info = hci_get_drvdata(hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700388
389 /* Drop TX queue */
390 skb_queue_purge(&(info->txq));
391
392 return 0;
393}
394
395
396static int bt3c_hci_open(struct hci_dev *hdev)
397{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398 return 0;
399}
400
401
402static int bt3c_hci_close(struct hci_dev *hdev)
403{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404 bt3c_hci_flush(hdev);
405
406 return 0;
407}
408
409
Marcel Holtmann7bd8f092013-10-11 06:19:18 -0700410static int bt3c_hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700411{
Himangi Saraogi3bbaf812014-08-13 14:49:56 +0530412 struct bt3c_info *info = hci_get_drvdata(hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413 unsigned long flags;
414
Marcel Holtmann618e8bc2015-11-05 07:33:56 +0100415 switch (hci_skb_pkt_type(skb)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416 case HCI_COMMAND_PKT:
417 hdev->stat.cmd_tx++;
418 break;
419 case HCI_ACLDATA_PKT:
420 hdev->stat.acl_tx++;
421 break;
422 case HCI_SCODATA_PKT:
423 hdev->stat.sco_tx++;
424 break;
Prasanna Karthikf104f062015-07-06 05:40:16 +0000425 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700426
427 /* Prepend skb with frame type */
Marcel Holtmann618e8bc2015-11-05 07:33:56 +0100428 memcpy(skb_push(skb, 1), &hci_skb_pkt_type(skb), 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700429 skb_queue_tail(&(info->txq), skb);
430
431 spin_lock_irqsave(&(info->lock), flags);
432
433 bt3c_write_wakeup(info);
434
435 spin_unlock_irqrestore(&(info->lock), flags);
436
437 return 0;
438}
439
440
Linus Torvalds1da177e2005-04-16 15:20:36 -0700441
442/* ======================== Card services HCI interaction ======================== */
443
444
Himangi Saraogi3bbaf812014-08-13 14:49:56 +0530445static int bt3c_load_firmware(struct bt3c_info *info,
446 const unsigned char *firmware,
David Woodhouse8187b4f2008-05-23 23:56:51 +0100447 int count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448{
449 char *ptr = (char *) firmware;
450 char b[9];
Ding Xiang38561352018-08-26 22:55:00 -0400451 unsigned int iobase, tmp, tn;
Prasanna Karthik10bd9732015-09-11 15:02:36 +0000452 unsigned long size, addr, fcs;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700453 int i, err = 0;
454
Dominik Brodowski9a017a92010-07-24 15:58:54 +0200455 iobase = info->p_dev->resource[0]->start;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700456
457 /* Reset */
458 bt3c_io_write(iobase, 0x8040, 0x0404);
459 bt3c_io_write(iobase, 0x8040, 0x0400);
460
461 udelay(1);
462
463 bt3c_io_write(iobase, 0x8040, 0x0404);
464
465 udelay(17);
466
467 /* Load */
468 while (count) {
469 if (ptr[0] != 'S') {
470 BT_ERR("Bad address in firmware");
471 err = -EFAULT;
472 goto error;
473 }
474
475 memset(b, 0, sizeof(b));
476 memcpy(b, ptr + 2, 2);
Prasanna Karthik10bd9732015-09-11 15:02:36 +0000477 if (kstrtoul(b, 16, &size) < 0)
478 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700479
480 memset(b, 0, sizeof(b));
481 memcpy(b, ptr + 4, 8);
Prasanna Karthik10bd9732015-09-11 15:02:36 +0000482 if (kstrtoul(b, 16, &addr) < 0)
483 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700484
485 memset(b, 0, sizeof(b));
486 memcpy(b, ptr + (size * 2) + 2, 2);
Prasanna Karthik10bd9732015-09-11 15:02:36 +0000487 if (kstrtoul(b, 16, &fcs) < 0)
488 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700489
490 memset(b, 0, sizeof(b));
491 for (tmp = 0, i = 0; i < size; i++) {
492 memcpy(b, ptr + (i * 2) + 2, 2);
Ding Xiang38561352018-08-26 22:55:00 -0400493 if (kstrtouint(b, 16, &tn))
494 return -EINVAL;
495 tmp += tn;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700496 }
497
498 if (((tmp + fcs) & 0xff) != 0xff) {
499 BT_ERR("Checksum error in firmware");
500 err = -EILSEQ;
501 goto error;
502 }
503
504 if (ptr[1] == '3') {
505 bt3c_address(iobase, addr);
506
507 memset(b, 0, sizeof(b));
508 for (i = 0; i < (size - 4) / 2; i++) {
509 memcpy(b, ptr + (i * 4) + 12, 4);
Ding Xiang38561352018-08-26 22:55:00 -0400510 if (kstrtouint(b, 16, &tmp))
511 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512 bt3c_put(iobase, tmp);
513 }
514 }
515
516 ptr += (size * 2) + 6;
517 count -= (size * 2) + 6;
518 }
519
520 udelay(17);
521
522 /* Boot */
523 bt3c_address(iobase, 0x3000);
524 outb(inb(iobase + CONTROL) | 0x40, iobase + CONTROL);
525
526error:
527 udelay(17);
528
529 /* Clear */
530 bt3c_io_write(iobase, 0x7006, 0x0000);
531 bt3c_io_write(iobase, 0x7005, 0x0000);
532 bt3c_io_write(iobase, 0x7001, 0x0000);
533
534 return err;
535}
536
537
Himangi Saraogi3bbaf812014-08-13 14:49:56 +0530538static int bt3c_open(struct bt3c_info *info)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700539{
540 const struct firmware *firmware;
541 struct hci_dev *hdev;
542 int err;
543
544 spin_lock_init(&(info->lock));
545
546 skb_queue_head_init(&(info->txq));
547
548 info->rx_state = RECV_WAIT_PACKET_TYPE;
549 info->rx_count = 0;
550 info->rx_skb = NULL;
551
552 /* Initialize HCI device */
553 hdev = hci_alloc_dev();
554 if (!hdev) {
555 BT_ERR("Can't allocate HCI device");
556 return -ENOMEM;
557 }
558
559 info->hdev = hdev;
560
Marcel Holtmannc13854c2010-02-08 15:27:07 +0100561 hdev->bus = HCI_PCCARD;
David Herrmann155961e2012-02-09 21:58:32 +0100562 hci_set_drvdata(hdev, info);
Marcel Holtmann27d35282006-07-03 10:02:37 +0200563 SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700564
Marcel Holtmann69b7e172013-10-10 10:50:02 -0700565 hdev->open = bt3c_hci_open;
566 hdev->close = bt3c_hci_close;
567 hdev->flush = bt3c_hci_flush;
568 hdev->send = bt3c_hci_send_frame;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700569
Linus Torvalds1da177e2005-04-16 15:20:36 -0700570 /* Load firmware */
Dominik Brodowskifd238232006-03-05 10:45:09 +0100571 err = request_firmware(&firmware, "BT3CPCC.bin", &info->p_dev->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700572 if (err < 0) {
573 BT_ERR("Firmware request failed");
574 goto error;
575 }
576
577 err = bt3c_load_firmware(info, firmware->data, firmware->size);
578
579 release_firmware(firmware);
580
581 if (err < 0) {
582 BT_ERR("Firmware loading failed");
583 goto error;
584 }
585
586 /* Timeout before it is safe to send the first HCI packet */
587 msleep(1000);
588
589 /* Register HCI device */
590 err = hci_register_dev(hdev);
591 if (err < 0) {
592 BT_ERR("Can't register HCI device");
593 goto error;
594 }
595
596 return 0;
597
598error:
599 info->hdev = NULL;
600 hci_free_dev(hdev);
601 return err;
602}
603
604
Himangi Saraogi3bbaf812014-08-13 14:49:56 +0530605static int bt3c_close(struct bt3c_info *info)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700606{
607 struct hci_dev *hdev = info->hdev;
608
609 if (!hdev)
610 return -ENODEV;
611
612 bt3c_hci_close(hdev);
613
David Herrmann13ea4012011-10-26 10:43:18 +0200614 hci_unregister_dev(hdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700615 hci_free_dev(hdev);
616
617 return 0;
618}
619
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200620static int bt3c_probe(struct pcmcia_device *link)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700621{
Himangi Saraogi3bbaf812014-08-13 14:49:56 +0530622 struct bt3c_info *info;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700623
624 /* Create new info device */
Sachin Kamat4f61cb12012-07-27 12:38:35 +0530625 info = devm_kzalloc(&link->dev, sizeof(*info), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700626 if (!info)
Dominik Brodowskif8cfa612005-11-14 21:25:51 +0100627 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700628
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200629 info->p_dev = link;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700630 link->priv = info;
631
Dominik Brodowski00990e72010-07-30 13:13:46 +0200632 link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_VPP |
633 CONF_AUTO_SET_IO;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700634
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200635 return bt3c_config(link);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700636}
637
638
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200639static void bt3c_detach(struct pcmcia_device *link)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700640{
Dominik Brodowskie2d40962006-03-02 00:09:29 +0100641 bt3c_release(link);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700642}
643
Dominik Brodowski00990e72010-07-30 13:13:46 +0200644static int bt3c_check_config(struct pcmcia_device *p_dev, void *priv_data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700645{
Dominik Brodowski00990e72010-07-30 13:13:46 +0200646 int *try = priv_data;
Dominik Brodowski90abdc32010-07-24 17:23:51 +0200647
Andrei Emeltchenko510df252012-06-20 14:40:12 +0300648 if (!try)
Dominik Brodowski00990e72010-07-30 13:13:46 +0200649 p_dev->io_lines = 16;
650
651 if ((p_dev->resource[0]->end != 8) || (p_dev->resource[0]->start == 0))
652 return -EINVAL;
653
654 p_dev->resource[0]->end = 8;
655 p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
656 p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
657
658 return pcmcia_request_io(p_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700659}
660
Dominik Brodowskied588722008-07-29 08:38:55 +0200661static int bt3c_check_config_notpicky(struct pcmcia_device *p_dev,
Dominik Brodowskied588722008-07-29 08:38:55 +0200662 void *priv_data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700663{
Dominik Brodowskied588722008-07-29 08:38:55 +0200664 static unsigned int base[5] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8, 0x0 };
665 int j;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700666
Dominik Brodowski00990e72010-07-30 13:13:46 +0200667 if (p_dev->io_lines > 3)
668 return -ENODEV;
669
670 p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
671 p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
672 p_dev->resource[0]->end = 8;
673
674 for (j = 0; j < 5; j++) {
675 p_dev->resource[0]->start = base[j];
676 p_dev->io_lines = base[j] ? 16 : 3;
677 if (!pcmcia_request_io(p_dev))
678 return 0;
Dominik Brodowskied588722008-07-29 08:38:55 +0200679 }
680 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700681}
682
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200683static int bt3c_config(struct pcmcia_device *link)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700684{
Himangi Saraogi3bbaf812014-08-13 14:49:56 +0530685 struct bt3c_info *info = link->priv;
Dominik Brodowskied588722008-07-29 08:38:55 +0200686 int i;
687 unsigned long try;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700688
Dominik Brodowskied588722008-07-29 08:38:55 +0200689 /* First pass: look for a config entry that looks normal.
Derek Robsond98422c2017-07-22 13:47:07 +1200690 * Two tries: without IO aliases, then with aliases
691 */
Dominik Brodowskied588722008-07-29 08:38:55 +0200692 for (try = 0; try < 2; try++)
693 if (!pcmcia_loop_config(link, bt3c_check_config, (void *) try))
694 goto found_port;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700695
696 /* Second pass: try to find an entry that isn't picky about
Derek Robsond98422c2017-07-22 13:47:07 +1200697 * its base address, then try to grab any standard serial port
698 * address, and finally try to get any free port.
699 */
Dominik Brodowskied588722008-07-29 08:38:55 +0200700 if (!pcmcia_loop_config(link, bt3c_check_config_notpicky, NULL))
701 goto found_port;
702
703 BT_ERR("No usable port range found");
Dominik Brodowskied588722008-07-29 08:38:55 +0200704 goto failed;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700705
706found_port:
Dominik Brodowskieb141202010-03-07 12:21:16 +0100707 i = pcmcia_request_irq(link, &bt3c_interrupt);
Dominik Brodowski9ac3e582009-10-24 15:45:06 +0200708 if (i != 0)
Dominik Brodowskieb141202010-03-07 12:21:16 +0100709 goto failed;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700710
Dominik Brodowski1ac71e52010-07-29 19:27:09 +0200711 i = pcmcia_enable_device(link);
Dominik Brodowski9ac3e582009-10-24 15:45:06 +0200712 if (i != 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700713 goto failed;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700714
715 if (bt3c_open(info) != 0)
716 goto failed;
717
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200718 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700719
Linus Torvalds1da177e2005-04-16 15:20:36 -0700720failed:
721 bt3c_release(link);
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200722 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700723}
724
725
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200726static void bt3c_release(struct pcmcia_device *link)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700727{
Himangi Saraogi3bbaf812014-08-13 14:49:56 +0530728 struct bt3c_info *info = link->priv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700729
Dominik Brodowskie2d40962006-03-02 00:09:29 +0100730 bt3c_close(info);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700731
Dominik Brodowskifba395e2006-03-31 17:21:06 +0200732 pcmcia_disable_device(link);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700733}
734
Linus Torvalds1da177e2005-04-16 15:20:36 -0700735
Joe Perches25f8f542011-05-03 19:29:01 -0700736static const struct pcmcia_device_id bt3c_ids[] = {
Dominik Brodowskia01c3ed2005-06-27 16:28:37 -0700737 PCMCIA_DEVICE_PROD_ID13("3COM", "Bluetooth PC Card", 0xefce0a31, 0xd4ce9b02),
738 PCMCIA_DEVICE_NULL
739};
740MODULE_DEVICE_TABLE(pcmcia, bt3c_ids);
741
Linus Torvalds1da177e2005-04-16 15:20:36 -0700742static struct pcmcia_driver bt3c_driver = {
743 .owner = THIS_MODULE,
Dominik Brodowski2e9b9812010-08-08 11:36:26 +0200744 .name = "bt3c_cs",
Dominik Brodowski15b99ac2006-03-31 17:26:06 +0200745 .probe = bt3c_probe,
Dominik Brodowskicc3b4862005-11-14 21:23:14 +0100746 .remove = bt3c_detach,
Dominik Brodowskia01c3ed2005-06-27 16:28:37 -0700747 .id_table = bt3c_ids,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700748};
H Hartley Sweetene0c005f2013-03-06 11:26:24 -0700749module_pcmcia_driver(bt3c_driver);