Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
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 | ||
1da177e4 LT |
24 | #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> | |
1da177e4 LT |
30 | #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> | |
1da177e4 LT |
42 | #include <asm/io.h> |
43 | ||
44 | #include <linux/device.h> | |
45 | #include <linux/firmware.h> | |
46 | ||
1da177e4 LT |
47 | #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 | ||
63fbd24e | 60 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); |
1da177e4 LT |
61 | MODULE_DESCRIPTION("Bluetooth driver for the 3Com Bluetooth PCMCIA card"); |
62 | MODULE_LICENSE("GPL"); | |
2312119a | 63 | MODULE_FIRMWARE("BT3CPCC.bin"); |
1da177e4 LT |
64 | |
65 | ||
66 | ||
67 | /* ======================== Local structures ======================== */ | |
68 | ||
69 | ||
3bbaf812 | 70 | struct bt3c_info { |
fd238232 | 71 | struct pcmcia_device *p_dev; |
1da177e4 LT |
72 | |
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; | |
3bbaf812 | 83 | }; |
1da177e4 LT |
84 | |
85 | ||
15b99ac1 | 86 | static int bt3c_config(struct pcmcia_device *link); |
fba395ee | 87 | static void bt3c_release(struct pcmcia_device *link); |
1da177e4 | 88 | |
cc3b4866 | 89 | static void bt3c_detach(struct pcmcia_device *p_dev); |
1da177e4 | 90 | |
1da177e4 LT |
91 | |
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 | ||
116 | static 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 | ||
123 | static 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 | ||
130 | static 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 | ||
137 | static 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 | ||
147 | static 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 | ||
159 | static 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 | ||
3bbaf812 | 178 | static void bt3c_write_wakeup(struct bt3c_info *info) |
1da177e4 LT |
179 | { |
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 { | |
fc5fef61 | 189 | unsigned int iobase = info->p_dev->resource[0]->start; |
1da177e4 | 190 | register struct sk_buff *skb; |
fc5fef61 | 191 | int len; |
1da177e4 | 192 | |
e2d40963 | 193 | if (!pcmcia_dev_present(info->p_dev)) |
1da177e4 LT |
194 | break; |
195 | ||
a08b15e6 VI |
196 | skb = skb_dequeue(&(info->txq)); |
197 | if (!skb) { | |
1da177e4 LT |
198 | 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 | ||
205 | if (len != skb->len) { | |
206 | BT_ERR("Very strange"); | |
207 | } | |
208 | ||
209 | kfree_skb(skb); | |
210 | ||
211 | info->hdev->stat.byte_tx += len; | |
212 | ||
213 | } while (0); | |
214 | } | |
215 | ||
216 | ||
3bbaf812 | 217 | static void bt3c_receive(struct bt3c_info *info) |
1da177e4 LT |
218 | { |
219 | unsigned int iobase; | |
220 | int size = 0, avail; | |
221 | ||
222 | if (!info) { | |
223 | BT_ERR("Unknown device"); | |
224 | return; | |
225 | } | |
226 | ||
9a017a91 | 227 | iobase = info->p_dev->resource[0]->start; |
1da177e4 LT |
228 | |
229 | avail = bt3c_read(iobase, 0x7006); | |
230 | //printk("bt3c_cs: receiving %d bytes\n", avail); | |
231 | ||
232 | bt3c_address(iobase, 0x7480); | |
233 | while (size < avail) { | |
234 | size++; | |
235 | info->hdev->stat.byte_rx++; | |
236 | ||
237 | /* Allocate packet */ | |
238 | if (info->rx_skb == NULL) { | |
239 | info->rx_state = RECV_WAIT_PACKET_TYPE; | |
240 | info->rx_count = 0; | |
a08b15e6 VI |
241 | info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC); |
242 | if (!info->rx_skb) { | |
1da177e4 LT |
243 | BT_ERR("Can't allocate mem for new packet"); |
244 | return; | |
245 | } | |
246 | } | |
247 | ||
248 | ||
249 | if (info->rx_state == RECV_WAIT_PACKET_TYPE) { | |
250 | ||
0d48d939 | 251 | bt_cb(info->rx_skb)->pkt_type = inb(iobase + DATA_L); |
1da177e4 | 252 | inb(iobase + DATA_H); |
0d48d939 | 253 | //printk("bt3c: PACKET_TYPE=%02x\n", bt_cb(info->rx_skb)->pkt_type); |
1da177e4 | 254 | |
0d48d939 | 255 | switch (bt_cb(info->rx_skb)->pkt_type) { |
1da177e4 LT |
256 | |
257 | case HCI_EVENT_PKT: | |
258 | info->rx_state = RECV_WAIT_EVENT_HEADER; | |
259 | info->rx_count = HCI_EVENT_HDR_SIZE; | |
260 | break; | |
261 | ||
262 | case HCI_ACLDATA_PKT: | |
263 | info->rx_state = RECV_WAIT_ACL_HEADER; | |
264 | info->rx_count = HCI_ACL_HDR_SIZE; | |
265 | break; | |
266 | ||
267 | case HCI_SCODATA_PKT: | |
268 | info->rx_state = RECV_WAIT_SCO_HEADER; | |
269 | info->rx_count = HCI_SCO_HDR_SIZE; | |
270 | break; | |
271 | ||
272 | default: | |
273 | /* Unknown packet */ | |
0d48d939 | 274 | BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type); |
1da177e4 LT |
275 | info->hdev->stat.err_rx++; |
276 | clear_bit(HCI_RUNNING, &(info->hdev->flags)); | |
277 | ||
278 | kfree_skb(info->rx_skb); | |
279 | info->rx_skb = NULL; | |
280 | break; | |
281 | ||
282 | } | |
283 | ||
284 | } else { | |
285 | ||
286 | __u8 x = inb(iobase + DATA_L); | |
287 | ||
288 | *skb_put(info->rx_skb, 1) = x; | |
289 | inb(iobase + DATA_H); | |
290 | info->rx_count--; | |
291 | ||
292 | if (info->rx_count == 0) { | |
293 | ||
294 | int dlen; | |
295 | struct hci_event_hdr *eh; | |
296 | struct hci_acl_hdr *ah; | |
297 | struct hci_sco_hdr *sh; | |
298 | ||
299 | switch (info->rx_state) { | |
300 | ||
301 | case RECV_WAIT_EVENT_HEADER: | |
2a123b86 | 302 | eh = hci_event_hdr(info->rx_skb); |
1da177e4 LT |
303 | info->rx_state = RECV_WAIT_DATA; |
304 | info->rx_count = eh->plen; | |
305 | break; | |
306 | ||
307 | case RECV_WAIT_ACL_HEADER: | |
2a123b86 | 308 | ah = hci_acl_hdr(info->rx_skb); |
1da177e4 LT |
309 | dlen = __le16_to_cpu(ah->dlen); |
310 | info->rx_state = RECV_WAIT_DATA; | |
311 | info->rx_count = dlen; | |
312 | break; | |
313 | ||
314 | case RECV_WAIT_SCO_HEADER: | |
2a123b86 | 315 | sh = hci_sco_hdr(info->rx_skb); |
1da177e4 LT |
316 | info->rx_state = RECV_WAIT_DATA; |
317 | info->rx_count = sh->dlen; | |
318 | break; | |
319 | ||
320 | case RECV_WAIT_DATA: | |
e1a26170 | 321 | hci_recv_frame(info->hdev, info->rx_skb); |
1da177e4 LT |
322 | info->rx_skb = NULL; |
323 | break; | |
324 | ||
325 | } | |
326 | ||
327 | } | |
328 | ||
329 | } | |
330 | ||
331 | } | |
332 | ||
333 | bt3c_io_write(iobase, 0x7006, 0x0000); | |
334 | } | |
335 | ||
336 | ||
7d12e780 | 337 | static irqreturn_t bt3c_interrupt(int irq, void *dev_inst) |
1da177e4 | 338 | { |
3bbaf812 | 339 | struct bt3c_info *info = dev_inst; |
1da177e4 LT |
340 | unsigned int iobase; |
341 | int iir; | |
aafcf998 | 342 | irqreturn_t r = IRQ_NONE; |
1da177e4 | 343 | |
7427847d MF |
344 | if (!info || !info->hdev) |
345 | /* our irq handler is shared */ | |
346 | return IRQ_NONE; | |
1da177e4 | 347 | |
9a017a91 | 348 | iobase = info->p_dev->resource[0]->start; |
1da177e4 LT |
349 | |
350 | spin_lock(&(info->lock)); | |
351 | ||
352 | iir = inb(iobase + CONTROL); | |
353 | if (iir & 0x80) { | |
354 | int stat = bt3c_read(iobase, 0x7001); | |
355 | ||
356 | if ((stat & 0xff) == 0x7f) { | |
357 | BT_ERR("Very strange (stat=0x%04x)", stat); | |
358 | } else if ((stat & 0xff) != 0xff) { | |
359 | if (stat & 0x0020) { | |
34a55eda | 360 | int status = bt3c_read(iobase, 0x7002) & 0x10; |
1da177e4 | 361 | BT_INFO("%s: Antenna %s", info->hdev->name, |
34a55eda | 362 | status ? "out" : "in"); |
1da177e4 LT |
363 | } |
364 | if (stat & 0x0001) | |
365 | bt3c_receive(info); | |
366 | if (stat & 0x0002) { | |
367 | //BT_ERR("Ack (stat=0x%04x)", stat); | |
368 | clear_bit(XMIT_SENDING, &(info->tx_state)); | |
369 | bt3c_write_wakeup(info); | |
370 | } | |
371 | ||
372 | bt3c_io_write(iobase, 0x7001, 0x0000); | |
373 | ||
374 | outb(iir, iobase + CONTROL); | |
375 | } | |
aafcf998 | 376 | r = IRQ_HANDLED; |
1da177e4 LT |
377 | } |
378 | ||
379 | spin_unlock(&(info->lock)); | |
380 | ||
aafcf998 | 381 | return r; |
1da177e4 LT |
382 | } |
383 | ||
384 | ||
385 | ||
386 | /* ======================== HCI interface ======================== */ | |
387 | ||
388 | ||
389 | static int bt3c_hci_flush(struct hci_dev *hdev) | |
390 | { | |
3bbaf812 | 391 | struct bt3c_info *info = hci_get_drvdata(hdev); |
1da177e4 LT |
392 | |
393 | /* Drop TX queue */ | |
394 | skb_queue_purge(&(info->txq)); | |
395 | ||
396 | return 0; | |
397 | } | |
398 | ||
399 | ||
400 | static int bt3c_hci_open(struct hci_dev *hdev) | |
401 | { | |
402 | set_bit(HCI_RUNNING, &(hdev->flags)); | |
403 | ||
404 | return 0; | |
405 | } | |
406 | ||
407 | ||
408 | static int bt3c_hci_close(struct hci_dev *hdev) | |
409 | { | |
410 | if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags))) | |
411 | return 0; | |
412 | ||
413 | bt3c_hci_flush(hdev); | |
414 | ||
415 | return 0; | |
416 | } | |
417 | ||
418 | ||
7bd8f09f | 419 | static int bt3c_hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 | 420 | { |
3bbaf812 | 421 | struct bt3c_info *info = hci_get_drvdata(hdev); |
1da177e4 LT |
422 | unsigned long flags; |
423 | ||
0d48d939 | 424 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
425 | case HCI_COMMAND_PKT: |
426 | hdev->stat.cmd_tx++; | |
427 | break; | |
428 | case HCI_ACLDATA_PKT: | |
429 | hdev->stat.acl_tx++; | |
430 | break; | |
431 | case HCI_SCODATA_PKT: | |
432 | hdev->stat.sco_tx++; | |
433 | break; | |
434 | }; | |
435 | ||
436 | /* Prepend skb with frame type */ | |
0d48d939 | 437 | memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1); |
1da177e4 LT |
438 | skb_queue_tail(&(info->txq), skb); |
439 | ||
440 | spin_lock_irqsave(&(info->lock), flags); | |
441 | ||
442 | bt3c_write_wakeup(info); | |
443 | ||
444 | spin_unlock_irqrestore(&(info->lock), flags); | |
445 | ||
446 | return 0; | |
447 | } | |
448 | ||
449 | ||
1da177e4 LT |
450 | |
451 | /* ======================== Card services HCI interaction ======================== */ | |
452 | ||
453 | ||
3bbaf812 HS |
454 | static int bt3c_load_firmware(struct bt3c_info *info, |
455 | const unsigned char *firmware, | |
8187b4fb | 456 | int count) |
1da177e4 LT |
457 | { |
458 | char *ptr = (char *) firmware; | |
459 | char b[9]; | |
460 | unsigned int iobase, size, addr, fcs, tmp; | |
461 | int i, err = 0; | |
462 | ||
9a017a91 | 463 | iobase = info->p_dev->resource[0]->start; |
1da177e4 LT |
464 | |
465 | /* Reset */ | |
466 | bt3c_io_write(iobase, 0x8040, 0x0404); | |
467 | bt3c_io_write(iobase, 0x8040, 0x0400); | |
468 | ||
469 | udelay(1); | |
470 | ||
471 | bt3c_io_write(iobase, 0x8040, 0x0404); | |
472 | ||
473 | udelay(17); | |
474 | ||
475 | /* Load */ | |
476 | while (count) { | |
477 | if (ptr[0] != 'S') { | |
478 | BT_ERR("Bad address in firmware"); | |
479 | err = -EFAULT; | |
480 | goto error; | |
481 | } | |
482 | ||
483 | memset(b, 0, sizeof(b)); | |
484 | memcpy(b, ptr + 2, 2); | |
51a6fbc8 | 485 | size = simple_strtoul(b, NULL, 16); |
1da177e4 LT |
486 | |
487 | memset(b, 0, sizeof(b)); | |
488 | memcpy(b, ptr + 4, 8); | |
51a6fbc8 | 489 | addr = simple_strtoul(b, NULL, 16); |
1da177e4 LT |
490 | |
491 | memset(b, 0, sizeof(b)); | |
492 | memcpy(b, ptr + (size * 2) + 2, 2); | |
51a6fbc8 | 493 | fcs = simple_strtoul(b, NULL, 16); |
1da177e4 LT |
494 | |
495 | memset(b, 0, sizeof(b)); | |
496 | for (tmp = 0, i = 0; i < size; i++) { | |
497 | memcpy(b, ptr + (i * 2) + 2, 2); | |
498 | tmp += simple_strtol(b, NULL, 16); | |
499 | } | |
500 | ||
501 | if (((tmp + fcs) & 0xff) != 0xff) { | |
502 | BT_ERR("Checksum error in firmware"); | |
503 | err = -EILSEQ; | |
504 | goto error; | |
505 | } | |
506 | ||
507 | if (ptr[1] == '3') { | |
508 | bt3c_address(iobase, addr); | |
509 | ||
510 | memset(b, 0, sizeof(b)); | |
511 | for (i = 0; i < (size - 4) / 2; i++) { | |
512 | memcpy(b, ptr + (i * 4) + 12, 4); | |
51a6fbc8 | 513 | tmp = simple_strtoul(b, NULL, 16); |
1da177e4 LT |
514 | bt3c_put(iobase, tmp); |
515 | } | |
516 | } | |
517 | ||
518 | ptr += (size * 2) + 6; | |
519 | count -= (size * 2) + 6; | |
520 | } | |
521 | ||
522 | udelay(17); | |
523 | ||
524 | /* Boot */ | |
525 | bt3c_address(iobase, 0x3000); | |
526 | outb(inb(iobase + CONTROL) | 0x40, iobase + CONTROL); | |
527 | ||
528 | error: | |
529 | udelay(17); | |
530 | ||
531 | /* Clear */ | |
532 | bt3c_io_write(iobase, 0x7006, 0x0000); | |
533 | bt3c_io_write(iobase, 0x7005, 0x0000); | |
534 | bt3c_io_write(iobase, 0x7001, 0x0000); | |
535 | ||
536 | return err; | |
537 | } | |
538 | ||
539 | ||
3bbaf812 | 540 | static int bt3c_open(struct bt3c_info *info) |
1da177e4 LT |
541 | { |
542 | const struct firmware *firmware; | |
543 | struct hci_dev *hdev; | |
544 | int err; | |
545 | ||
546 | spin_lock_init(&(info->lock)); | |
547 | ||
548 | skb_queue_head_init(&(info->txq)); | |
549 | ||
550 | info->rx_state = RECV_WAIT_PACKET_TYPE; | |
551 | info->rx_count = 0; | |
552 | info->rx_skb = NULL; | |
553 | ||
554 | /* Initialize HCI device */ | |
555 | hdev = hci_alloc_dev(); | |
556 | if (!hdev) { | |
557 | BT_ERR("Can't allocate HCI device"); | |
558 | return -ENOMEM; | |
559 | } | |
560 | ||
561 | info->hdev = hdev; | |
562 | ||
c13854ce | 563 | hdev->bus = HCI_PCCARD; |
155961e8 | 564 | hci_set_drvdata(hdev, info); |
27d35284 | 565 | SET_HCIDEV_DEV(hdev, &info->p_dev->dev); |
1da177e4 | 566 | |
69b7e170 MH |
567 | hdev->open = bt3c_hci_open; |
568 | hdev->close = bt3c_hci_close; | |
569 | hdev->flush = bt3c_hci_flush; | |
570 | hdev->send = bt3c_hci_send_frame; | |
1da177e4 | 571 | |
1da177e4 | 572 | /* Load firmware */ |
fd238232 | 573 | err = request_firmware(&firmware, "BT3CPCC.bin", &info->p_dev->dev); |
1da177e4 LT |
574 | if (err < 0) { |
575 | BT_ERR("Firmware request failed"); | |
576 | goto error; | |
577 | } | |
578 | ||
579 | err = bt3c_load_firmware(info, firmware->data, firmware->size); | |
580 | ||
581 | release_firmware(firmware); | |
582 | ||
583 | if (err < 0) { | |
584 | BT_ERR("Firmware loading failed"); | |
585 | goto error; | |
586 | } | |
587 | ||
588 | /* Timeout before it is safe to send the first HCI packet */ | |
589 | msleep(1000); | |
590 | ||
591 | /* Register HCI device */ | |
592 | err = hci_register_dev(hdev); | |
593 | if (err < 0) { | |
594 | BT_ERR("Can't register HCI device"); | |
595 | goto error; | |
596 | } | |
597 | ||
598 | return 0; | |
599 | ||
600 | error: | |
601 | info->hdev = NULL; | |
602 | hci_free_dev(hdev); | |
603 | return err; | |
604 | } | |
605 | ||
606 | ||
3bbaf812 | 607 | static int bt3c_close(struct bt3c_info *info) |
1da177e4 LT |
608 | { |
609 | struct hci_dev *hdev = info->hdev; | |
610 | ||
611 | if (!hdev) | |
612 | return -ENODEV; | |
613 | ||
614 | bt3c_hci_close(hdev); | |
615 | ||
13ea4015 | 616 | hci_unregister_dev(hdev); |
1da177e4 LT |
617 | hci_free_dev(hdev); |
618 | ||
619 | return 0; | |
620 | } | |
621 | ||
15b99ac1 | 622 | static int bt3c_probe(struct pcmcia_device *link) |
1da177e4 | 623 | { |
3bbaf812 | 624 | struct bt3c_info *info; |
1da177e4 LT |
625 | |
626 | /* Create new info device */ | |
4f61cb18 | 627 | info = devm_kzalloc(&link->dev, sizeof(*info), GFP_KERNEL); |
1da177e4 | 628 | if (!info) |
f8cfa618 | 629 | return -ENOMEM; |
1da177e4 | 630 | |
fba395ee | 631 | info->p_dev = link; |
1da177e4 LT |
632 | link->priv = info; |
633 | ||
00990e7c DB |
634 | link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_VPP | |
635 | CONF_AUTO_SET_IO; | |
1da177e4 | 636 | |
15b99ac1 | 637 | return bt3c_config(link); |
1da177e4 LT |
638 | } |
639 | ||
640 | ||
fba395ee | 641 | static void bt3c_detach(struct pcmcia_device *link) |
1da177e4 | 642 | { |
e2d40963 | 643 | bt3c_release(link); |
1da177e4 LT |
644 | } |
645 | ||
00990e7c | 646 | static int bt3c_check_config(struct pcmcia_device *p_dev, void *priv_data) |
1da177e4 | 647 | { |
00990e7c | 648 | int *try = priv_data; |
90abdc3b | 649 | |
510df251 | 650 | if (!try) |
00990e7c DB |
651 | p_dev->io_lines = 16; |
652 | ||
653 | if ((p_dev->resource[0]->end != 8) || (p_dev->resource[0]->start == 0)) | |
654 | return -EINVAL; | |
655 | ||
656 | p_dev->resource[0]->end = 8; | |
657 | p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; | |
658 | p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; | |
659 | ||
660 | return pcmcia_request_io(p_dev); | |
1da177e4 LT |
661 | } |
662 | ||
ed58872a | 663 | static int bt3c_check_config_notpicky(struct pcmcia_device *p_dev, |
ed58872a | 664 | void *priv_data) |
1da177e4 | 665 | { |
ed58872a DB |
666 | static unsigned int base[5] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8, 0x0 }; |
667 | int j; | |
668 | ||
00990e7c DB |
669 | if (p_dev->io_lines > 3) |
670 | return -ENODEV; | |
671 | ||
672 | p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; | |
673 | p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; | |
674 | p_dev->resource[0]->end = 8; | |
675 | ||
676 | for (j = 0; j < 5; j++) { | |
677 | p_dev->resource[0]->start = base[j]; | |
678 | p_dev->io_lines = base[j] ? 16 : 3; | |
679 | if (!pcmcia_request_io(p_dev)) | |
680 | return 0; | |
ed58872a DB |
681 | } |
682 | return -ENODEV; | |
1da177e4 LT |
683 | } |
684 | ||
15b99ac1 | 685 | static int bt3c_config(struct pcmcia_device *link) |
1da177e4 | 686 | { |
3bbaf812 | 687 | struct bt3c_info *info = link->priv; |
ed58872a DB |
688 | int i; |
689 | unsigned long try; | |
690 | ||
691 | /* First pass: look for a config entry that looks normal. | |
692 | Two tries: without IO aliases, then with aliases */ | |
693 | for (try = 0; try < 2; try++) | |
694 | if (!pcmcia_loop_config(link, bt3c_check_config, (void *) try)) | |
695 | goto found_port; | |
1da177e4 LT |
696 | |
697 | /* Second pass: try to find an entry that isn't picky about | |
698 | its base address, then try to grab any standard serial port | |
699 | address, and finally try to get any free port. */ | |
ed58872a DB |
700 | if (!pcmcia_loop_config(link, bt3c_check_config_notpicky, NULL)) |
701 | goto found_port; | |
1da177e4 | 702 | |
ed58872a | 703 | BT_ERR("No usable port range found"); |
ed58872a | 704 | goto failed; |
1da177e4 | 705 | |
ed58872a | 706 | found_port: |
eb14120f | 707 | i = pcmcia_request_irq(link, &bt3c_interrupt); |
9ac3e58c | 708 | if (i != 0) |
eb14120f | 709 | goto failed; |
1da177e4 | 710 | |
1ac71e5a | 711 | i = pcmcia_enable_device(link); |
9ac3e58c | 712 | if (i != 0) |
1da177e4 | 713 | goto failed; |
1da177e4 LT |
714 | |
715 | if (bt3c_open(info) != 0) | |
716 | goto failed; | |
717 | ||
15b99ac1 | 718 | return 0; |
1da177e4 | 719 | |
1da177e4 LT |
720 | failed: |
721 | bt3c_release(link); | |
15b99ac1 | 722 | return -ENODEV; |
1da177e4 LT |
723 | } |
724 | ||
725 | ||
fba395ee | 726 | static void bt3c_release(struct pcmcia_device *link) |
1da177e4 | 727 | { |
3bbaf812 | 728 | struct bt3c_info *info = link->priv; |
1da177e4 | 729 | |
e2d40963 | 730 | bt3c_close(info); |
1da177e4 | 731 | |
fba395ee | 732 | pcmcia_disable_device(link); |
1da177e4 LT |
733 | } |
734 | ||
1da177e4 | 735 | |
25f8f54f | 736 | static const struct pcmcia_device_id bt3c_ids[] = { |
a01c3ed4 DB |
737 | PCMCIA_DEVICE_PROD_ID13("3COM", "Bluetooth PC Card", 0xefce0a31, 0xd4ce9b02), |
738 | PCMCIA_DEVICE_NULL | |
739 | }; | |
740 | MODULE_DEVICE_TABLE(pcmcia, bt3c_ids); | |
741 | ||
1da177e4 LT |
742 | static struct pcmcia_driver bt3c_driver = { |
743 | .owner = THIS_MODULE, | |
2e9b981a | 744 | .name = "bt3c_cs", |
15b99ac1 | 745 | .probe = bt3c_probe, |
cc3b4866 | 746 | .remove = bt3c_detach, |
a01c3ed4 | 747 | .id_table = bt3c_ids, |
1da177e4 | 748 | }; |
e0c005f4 | 749 | module_pcmcia_driver(bt3c_driver); |