Commit | Line | Data |
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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 | ||
24 | #include <linux/config.h> | |
25 | #include <linux/module.h> | |
26 | ||
27 | #include <linux/kernel.h> | |
28 | #include <linux/init.h> | |
29 | #include <linux/slab.h> | |
30 | #include <linux/types.h> | |
31 | #include <linux/sched.h> | |
32 | #include <linux/delay.h> | |
33 | #include <linux/errno.h> | |
34 | #include <linux/ptrace.h> | |
35 | #include <linux/ioport.h> | |
36 | #include <linux/spinlock.h> | |
37 | #include <linux/moduleparam.h> | |
38 | ||
39 | #include <linux/skbuff.h> | |
40 | #include <linux/string.h> | |
41 | #include <linux/serial.h> | |
42 | #include <linux/serial_reg.h> | |
43 | #include <linux/bitops.h> | |
44 | #include <asm/system.h> | |
45 | #include <asm/io.h> | |
46 | ||
47 | #include <linux/device.h> | |
48 | #include <linux/firmware.h> | |
49 | ||
50 | #include <pcmcia/version.h> | |
51 | #include <pcmcia/cs_types.h> | |
52 | #include <pcmcia/cs.h> | |
53 | #include <pcmcia/cistpl.h> | |
54 | #include <pcmcia/ciscode.h> | |
55 | #include <pcmcia/ds.h> | |
56 | #include <pcmcia/cisreg.h> | |
57 | ||
58 | #include <net/bluetooth/bluetooth.h> | |
59 | #include <net/bluetooth/hci_core.h> | |
60 | ||
61 | ||
62 | ||
63 | /* ======================== Module parameters ======================== */ | |
64 | ||
65 | ||
66 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>, Jose Orlando Pereira <jop@di.uminho.pt>"); | |
67 | MODULE_DESCRIPTION("Bluetooth driver for the 3Com Bluetooth PCMCIA card"); | |
68 | MODULE_LICENSE("GPL"); | |
69 | ||
70 | ||
71 | ||
72 | /* ======================== Local structures ======================== */ | |
73 | ||
74 | ||
75 | typedef struct bt3c_info_t { | |
76 | dev_link_t link; | |
77 | dev_node_t node; | |
78 | ||
79 | struct hci_dev *hdev; | |
80 | ||
81 | spinlock_t lock; /* For serializing operations */ | |
82 | ||
83 | struct sk_buff_head txq; | |
84 | unsigned long tx_state; | |
85 | ||
86 | unsigned long rx_state; | |
87 | unsigned long rx_count; | |
88 | struct sk_buff *rx_skb; | |
89 | } bt3c_info_t; | |
90 | ||
91 | ||
92 | static void bt3c_config(dev_link_t *link); | |
93 | static void bt3c_release(dev_link_t *link); | |
94 | static int bt3c_event(event_t event, int priority, event_callback_args_t *args); | |
95 | ||
96 | static dev_info_t dev_info = "bt3c_cs"; | |
97 | ||
98 | static dev_link_t *bt3c_attach(void); | |
99 | static void bt3c_detach(dev_link_t *); | |
100 | ||
101 | static dev_link_t *dev_list = NULL; | |
102 | ||
103 | ||
104 | /* Transmit states */ | |
105 | #define XMIT_SENDING 1 | |
106 | #define XMIT_WAKEUP 2 | |
107 | #define XMIT_WAITING 8 | |
108 | ||
109 | /* Receiver states */ | |
110 | #define RECV_WAIT_PACKET_TYPE 0 | |
111 | #define RECV_WAIT_EVENT_HEADER 1 | |
112 | #define RECV_WAIT_ACL_HEADER 2 | |
113 | #define RECV_WAIT_SCO_HEADER 3 | |
114 | #define RECV_WAIT_DATA 4 | |
115 | ||
116 | ||
117 | ||
118 | /* ======================== Special I/O functions ======================== */ | |
119 | ||
120 | ||
121 | #define DATA_L 0 | |
122 | #define DATA_H 1 | |
123 | #define ADDR_L 2 | |
124 | #define ADDR_H 3 | |
125 | #define CONTROL 4 | |
126 | ||
127 | ||
128 | static inline void bt3c_address(unsigned int iobase, unsigned short addr) | |
129 | { | |
130 | outb(addr & 0xff, iobase + ADDR_L); | |
131 | outb((addr >> 8) & 0xff, iobase + ADDR_H); | |
132 | } | |
133 | ||
134 | ||
135 | static inline void bt3c_put(unsigned int iobase, unsigned short value) | |
136 | { | |
137 | outb(value & 0xff, iobase + DATA_L); | |
138 | outb((value >> 8) & 0xff, iobase + DATA_H); | |
139 | } | |
140 | ||
141 | ||
142 | static inline void bt3c_io_write(unsigned int iobase, unsigned short addr, unsigned short value) | |
143 | { | |
144 | bt3c_address(iobase, addr); | |
145 | bt3c_put(iobase, value); | |
146 | } | |
147 | ||
148 | ||
149 | static inline unsigned short bt3c_get(unsigned int iobase) | |
150 | { | |
151 | unsigned short value = inb(iobase + DATA_L); | |
152 | ||
153 | value |= inb(iobase + DATA_H) << 8; | |
154 | ||
155 | return value; | |
156 | } | |
157 | ||
158 | ||
159 | static inline unsigned short bt3c_read(unsigned int iobase, unsigned short addr) | |
160 | { | |
161 | bt3c_address(iobase, addr); | |
162 | ||
163 | return bt3c_get(iobase); | |
164 | } | |
165 | ||
166 | ||
167 | ||
168 | /* ======================== Interrupt handling ======================== */ | |
169 | ||
170 | ||
171 | static int bt3c_write(unsigned int iobase, int fifo_size, __u8 *buf, int len) | |
172 | { | |
173 | int actual = 0; | |
174 | ||
175 | bt3c_address(iobase, 0x7080); | |
176 | ||
177 | /* Fill FIFO with current frame */ | |
178 | while (actual < len) { | |
179 | /* Transmit next byte */ | |
180 | bt3c_put(iobase, buf[actual]); | |
181 | actual++; | |
182 | } | |
183 | ||
184 | bt3c_io_write(iobase, 0x7005, actual); | |
185 | ||
186 | return actual; | |
187 | } | |
188 | ||
189 | ||
190 | static void bt3c_write_wakeup(bt3c_info_t *info) | |
191 | { | |
192 | if (!info) { | |
193 | BT_ERR("Unknown device"); | |
194 | return; | |
195 | } | |
196 | ||
197 | if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) | |
198 | return; | |
199 | ||
200 | do { | |
201 | register unsigned int iobase = info->link.io.BasePort1; | |
202 | register struct sk_buff *skb; | |
203 | register int len; | |
204 | ||
205 | if (!(info->link.state & DEV_PRESENT)) | |
206 | break; | |
207 | ||
208 | ||
209 | if (!(skb = skb_dequeue(&(info->txq)))) { | |
210 | clear_bit(XMIT_SENDING, &(info->tx_state)); | |
211 | break; | |
212 | } | |
213 | ||
214 | /* Send frame */ | |
215 | len = bt3c_write(iobase, 256, skb->data, skb->len); | |
216 | ||
217 | if (len != skb->len) { | |
218 | BT_ERR("Very strange"); | |
219 | } | |
220 | ||
221 | kfree_skb(skb); | |
222 | ||
223 | info->hdev->stat.byte_tx += len; | |
224 | ||
225 | } while (0); | |
226 | } | |
227 | ||
228 | ||
229 | static void bt3c_receive(bt3c_info_t *info) | |
230 | { | |
231 | unsigned int iobase; | |
232 | int size = 0, avail; | |
233 | ||
234 | if (!info) { | |
235 | BT_ERR("Unknown device"); | |
236 | return; | |
237 | } | |
238 | ||
239 | iobase = info->link.io.BasePort1; | |
240 | ||
241 | avail = bt3c_read(iobase, 0x7006); | |
242 | //printk("bt3c_cs: receiving %d bytes\n", avail); | |
243 | ||
244 | bt3c_address(iobase, 0x7480); | |
245 | while (size < avail) { | |
246 | size++; | |
247 | info->hdev->stat.byte_rx++; | |
248 | ||
249 | /* Allocate packet */ | |
250 | if (info->rx_skb == NULL) { | |
251 | info->rx_state = RECV_WAIT_PACKET_TYPE; | |
252 | info->rx_count = 0; | |
253 | if (!(info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) { | |
254 | BT_ERR("Can't allocate mem for new packet"); | |
255 | return; | |
256 | } | |
257 | } | |
258 | ||
259 | ||
260 | if (info->rx_state == RECV_WAIT_PACKET_TYPE) { | |
261 | ||
262 | info->rx_skb->dev = (void *) info->hdev; | |
263 | info->rx_skb->pkt_type = inb(iobase + DATA_L); | |
264 | inb(iobase + DATA_H); | |
265 | //printk("bt3c: PACKET_TYPE=%02x\n", info->rx_skb->pkt_type); | |
266 | ||
267 | switch (info->rx_skb->pkt_type) { | |
268 | ||
269 | case HCI_EVENT_PKT: | |
270 | info->rx_state = RECV_WAIT_EVENT_HEADER; | |
271 | info->rx_count = HCI_EVENT_HDR_SIZE; | |
272 | break; | |
273 | ||
274 | case HCI_ACLDATA_PKT: | |
275 | info->rx_state = RECV_WAIT_ACL_HEADER; | |
276 | info->rx_count = HCI_ACL_HDR_SIZE; | |
277 | break; | |
278 | ||
279 | case HCI_SCODATA_PKT: | |
280 | info->rx_state = RECV_WAIT_SCO_HEADER; | |
281 | info->rx_count = HCI_SCO_HDR_SIZE; | |
282 | break; | |
283 | ||
284 | default: | |
285 | /* Unknown packet */ | |
286 | BT_ERR("Unknown HCI packet with type 0x%02x received", info->rx_skb->pkt_type); | |
287 | info->hdev->stat.err_rx++; | |
288 | clear_bit(HCI_RUNNING, &(info->hdev->flags)); | |
289 | ||
290 | kfree_skb(info->rx_skb); | |
291 | info->rx_skb = NULL; | |
292 | break; | |
293 | ||
294 | } | |
295 | ||
296 | } else { | |
297 | ||
298 | __u8 x = inb(iobase + DATA_L); | |
299 | ||
300 | *skb_put(info->rx_skb, 1) = x; | |
301 | inb(iobase + DATA_H); | |
302 | info->rx_count--; | |
303 | ||
304 | if (info->rx_count == 0) { | |
305 | ||
306 | int dlen; | |
307 | struct hci_event_hdr *eh; | |
308 | struct hci_acl_hdr *ah; | |
309 | struct hci_sco_hdr *sh; | |
310 | ||
311 | switch (info->rx_state) { | |
312 | ||
313 | case RECV_WAIT_EVENT_HEADER: | |
314 | eh = (struct hci_event_hdr *)(info->rx_skb->data); | |
315 | info->rx_state = RECV_WAIT_DATA; | |
316 | info->rx_count = eh->plen; | |
317 | break; | |
318 | ||
319 | case RECV_WAIT_ACL_HEADER: | |
320 | ah = (struct hci_acl_hdr *)(info->rx_skb->data); | |
321 | dlen = __le16_to_cpu(ah->dlen); | |
322 | info->rx_state = RECV_WAIT_DATA; | |
323 | info->rx_count = dlen; | |
324 | break; | |
325 | ||
326 | case RECV_WAIT_SCO_HEADER: | |
327 | sh = (struct hci_sco_hdr *)(info->rx_skb->data); | |
328 | info->rx_state = RECV_WAIT_DATA; | |
329 | info->rx_count = sh->dlen; | |
330 | break; | |
331 | ||
332 | case RECV_WAIT_DATA: | |
333 | hci_recv_frame(info->rx_skb); | |
334 | info->rx_skb = NULL; | |
335 | break; | |
336 | ||
337 | } | |
338 | ||
339 | } | |
340 | ||
341 | } | |
342 | ||
343 | } | |
344 | ||
345 | bt3c_io_write(iobase, 0x7006, 0x0000); | |
346 | } | |
347 | ||
348 | ||
349 | static irqreturn_t bt3c_interrupt(int irq, void *dev_inst, struct pt_regs *regs) | |
350 | { | |
351 | bt3c_info_t *info = dev_inst; | |
352 | unsigned int iobase; | |
353 | int iir; | |
354 | ||
355 | if (!info || !info->hdev) { | |
356 | BT_ERR("Call of irq %d for unknown device", irq); | |
357 | return IRQ_NONE; | |
358 | } | |
359 | ||
360 | iobase = info->link.io.BasePort1; | |
361 | ||
362 | spin_lock(&(info->lock)); | |
363 | ||
364 | iir = inb(iobase + CONTROL); | |
365 | if (iir & 0x80) { | |
366 | int stat = bt3c_read(iobase, 0x7001); | |
367 | ||
368 | if ((stat & 0xff) == 0x7f) { | |
369 | BT_ERR("Very strange (stat=0x%04x)", stat); | |
370 | } else if ((stat & 0xff) != 0xff) { | |
371 | if (stat & 0x0020) { | |
372 | int stat = bt3c_read(iobase, 0x7002) & 0x10; | |
373 | BT_INFO("%s: Antenna %s", info->hdev->name, | |
374 | stat ? "out" : "in"); | |
375 | } | |
376 | if (stat & 0x0001) | |
377 | bt3c_receive(info); | |
378 | if (stat & 0x0002) { | |
379 | //BT_ERR("Ack (stat=0x%04x)", stat); | |
380 | clear_bit(XMIT_SENDING, &(info->tx_state)); | |
381 | bt3c_write_wakeup(info); | |
382 | } | |
383 | ||
384 | bt3c_io_write(iobase, 0x7001, 0x0000); | |
385 | ||
386 | outb(iir, iobase + CONTROL); | |
387 | } | |
388 | } | |
389 | ||
390 | spin_unlock(&(info->lock)); | |
391 | ||
392 | return IRQ_HANDLED; | |
393 | } | |
394 | ||
395 | ||
396 | ||
397 | /* ======================== HCI interface ======================== */ | |
398 | ||
399 | ||
400 | static int bt3c_hci_flush(struct hci_dev *hdev) | |
401 | { | |
402 | bt3c_info_t *info = (bt3c_info_t *)(hdev->driver_data); | |
403 | ||
404 | /* Drop TX queue */ | |
405 | skb_queue_purge(&(info->txq)); | |
406 | ||
407 | return 0; | |
408 | } | |
409 | ||
410 | ||
411 | static int bt3c_hci_open(struct hci_dev *hdev) | |
412 | { | |
413 | set_bit(HCI_RUNNING, &(hdev->flags)); | |
414 | ||
415 | return 0; | |
416 | } | |
417 | ||
418 | ||
419 | static int bt3c_hci_close(struct hci_dev *hdev) | |
420 | { | |
421 | if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags))) | |
422 | return 0; | |
423 | ||
424 | bt3c_hci_flush(hdev); | |
425 | ||
426 | return 0; | |
427 | } | |
428 | ||
429 | ||
430 | static int bt3c_hci_send_frame(struct sk_buff *skb) | |
431 | { | |
432 | bt3c_info_t *info; | |
433 | struct hci_dev *hdev = (struct hci_dev *)(skb->dev); | |
434 | unsigned long flags; | |
435 | ||
436 | if (!hdev) { | |
437 | BT_ERR("Frame for unknown HCI device (hdev=NULL)"); | |
438 | return -ENODEV; | |
439 | } | |
440 | ||
441 | info = (bt3c_info_t *) (hdev->driver_data); | |
442 | ||
443 | switch (skb->pkt_type) { | |
444 | case HCI_COMMAND_PKT: | |
445 | hdev->stat.cmd_tx++; | |
446 | break; | |
447 | case HCI_ACLDATA_PKT: | |
448 | hdev->stat.acl_tx++; | |
449 | break; | |
450 | case HCI_SCODATA_PKT: | |
451 | hdev->stat.sco_tx++; | |
452 | break; | |
453 | }; | |
454 | ||
455 | /* Prepend skb with frame type */ | |
456 | memcpy(skb_push(skb, 1), &(skb->pkt_type), 1); | |
457 | skb_queue_tail(&(info->txq), skb); | |
458 | ||
459 | spin_lock_irqsave(&(info->lock), flags); | |
460 | ||
461 | bt3c_write_wakeup(info); | |
462 | ||
463 | spin_unlock_irqrestore(&(info->lock), flags); | |
464 | ||
465 | return 0; | |
466 | } | |
467 | ||
468 | ||
469 | static void bt3c_hci_destruct(struct hci_dev *hdev) | |
470 | { | |
471 | } | |
472 | ||
473 | ||
474 | static int bt3c_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg) | |
475 | { | |
476 | return -ENOIOCTLCMD; | |
477 | } | |
478 | ||
479 | ||
480 | ||
481 | /* ======================== Card services HCI interaction ======================== */ | |
482 | ||
483 | ||
484 | static struct device *bt3c_device(void) | |
485 | { | |
486 | static struct device dev = { | |
487 | .bus_id = "pcmcia", | |
488 | }; | |
489 | kobject_set_name(&dev.kobj, "bt3c"); | |
490 | kobject_init(&dev.kobj); | |
491 | ||
492 | return &dev; | |
493 | } | |
494 | ||
495 | ||
496 | static int bt3c_load_firmware(bt3c_info_t *info, unsigned char *firmware, int count) | |
497 | { | |
498 | char *ptr = (char *) firmware; | |
499 | char b[9]; | |
500 | unsigned int iobase, size, addr, fcs, tmp; | |
501 | int i, err = 0; | |
502 | ||
503 | iobase = info->link.io.BasePort1; | |
504 | ||
505 | /* Reset */ | |
506 | bt3c_io_write(iobase, 0x8040, 0x0404); | |
507 | bt3c_io_write(iobase, 0x8040, 0x0400); | |
508 | ||
509 | udelay(1); | |
510 | ||
511 | bt3c_io_write(iobase, 0x8040, 0x0404); | |
512 | ||
513 | udelay(17); | |
514 | ||
515 | /* Load */ | |
516 | while (count) { | |
517 | if (ptr[0] != 'S') { | |
518 | BT_ERR("Bad address in firmware"); | |
519 | err = -EFAULT; | |
520 | goto error; | |
521 | } | |
522 | ||
523 | memset(b, 0, sizeof(b)); | |
524 | memcpy(b, ptr + 2, 2); | |
525 | size = simple_strtol(b, NULL, 16); | |
526 | ||
527 | memset(b, 0, sizeof(b)); | |
528 | memcpy(b, ptr + 4, 8); | |
529 | addr = simple_strtol(b, NULL, 16); | |
530 | ||
531 | memset(b, 0, sizeof(b)); | |
532 | memcpy(b, ptr + (size * 2) + 2, 2); | |
533 | fcs = simple_strtol(b, NULL, 16); | |
534 | ||
535 | memset(b, 0, sizeof(b)); | |
536 | for (tmp = 0, i = 0; i < size; i++) { | |
537 | memcpy(b, ptr + (i * 2) + 2, 2); | |
538 | tmp += simple_strtol(b, NULL, 16); | |
539 | } | |
540 | ||
541 | if (((tmp + fcs) & 0xff) != 0xff) { | |
542 | BT_ERR("Checksum error in firmware"); | |
543 | err = -EILSEQ; | |
544 | goto error; | |
545 | } | |
546 | ||
547 | if (ptr[1] == '3') { | |
548 | bt3c_address(iobase, addr); | |
549 | ||
550 | memset(b, 0, sizeof(b)); | |
551 | for (i = 0; i < (size - 4) / 2; i++) { | |
552 | memcpy(b, ptr + (i * 4) + 12, 4); | |
553 | tmp = simple_strtol(b, NULL, 16); | |
554 | bt3c_put(iobase, tmp); | |
555 | } | |
556 | } | |
557 | ||
558 | ptr += (size * 2) + 6; | |
559 | count -= (size * 2) + 6; | |
560 | } | |
561 | ||
562 | udelay(17); | |
563 | ||
564 | /* Boot */ | |
565 | bt3c_address(iobase, 0x3000); | |
566 | outb(inb(iobase + CONTROL) | 0x40, iobase + CONTROL); | |
567 | ||
568 | error: | |
569 | udelay(17); | |
570 | ||
571 | /* Clear */ | |
572 | bt3c_io_write(iobase, 0x7006, 0x0000); | |
573 | bt3c_io_write(iobase, 0x7005, 0x0000); | |
574 | bt3c_io_write(iobase, 0x7001, 0x0000); | |
575 | ||
576 | return err; | |
577 | } | |
578 | ||
579 | ||
580 | static int bt3c_open(bt3c_info_t *info) | |
581 | { | |
582 | const struct firmware *firmware; | |
583 | struct hci_dev *hdev; | |
584 | int err; | |
585 | ||
586 | spin_lock_init(&(info->lock)); | |
587 | ||
588 | skb_queue_head_init(&(info->txq)); | |
589 | ||
590 | info->rx_state = RECV_WAIT_PACKET_TYPE; | |
591 | info->rx_count = 0; | |
592 | info->rx_skb = NULL; | |
593 | ||
594 | /* Initialize HCI device */ | |
595 | hdev = hci_alloc_dev(); | |
596 | if (!hdev) { | |
597 | BT_ERR("Can't allocate HCI device"); | |
598 | return -ENOMEM; | |
599 | } | |
600 | ||
601 | info->hdev = hdev; | |
602 | ||
603 | hdev->type = HCI_PCCARD; | |
604 | hdev->driver_data = info; | |
605 | ||
606 | hdev->open = bt3c_hci_open; | |
607 | hdev->close = bt3c_hci_close; | |
608 | hdev->flush = bt3c_hci_flush; | |
609 | hdev->send = bt3c_hci_send_frame; | |
610 | hdev->destruct = bt3c_hci_destruct; | |
611 | hdev->ioctl = bt3c_hci_ioctl; | |
612 | ||
613 | hdev->owner = THIS_MODULE; | |
614 | ||
615 | /* Load firmware */ | |
616 | err = request_firmware(&firmware, "BT3CPCC.bin", bt3c_device()); | |
617 | if (err < 0) { | |
618 | BT_ERR("Firmware request failed"); | |
619 | goto error; | |
620 | } | |
621 | ||
622 | err = bt3c_load_firmware(info, firmware->data, firmware->size); | |
623 | ||
624 | release_firmware(firmware); | |
625 | ||
626 | if (err < 0) { | |
627 | BT_ERR("Firmware loading failed"); | |
628 | goto error; | |
629 | } | |
630 | ||
631 | /* Timeout before it is safe to send the first HCI packet */ | |
632 | msleep(1000); | |
633 | ||
634 | /* Register HCI device */ | |
635 | err = hci_register_dev(hdev); | |
636 | if (err < 0) { | |
637 | BT_ERR("Can't register HCI device"); | |
638 | goto error; | |
639 | } | |
640 | ||
641 | return 0; | |
642 | ||
643 | error: | |
644 | info->hdev = NULL; | |
645 | hci_free_dev(hdev); | |
646 | return err; | |
647 | } | |
648 | ||
649 | ||
650 | static int bt3c_close(bt3c_info_t *info) | |
651 | { | |
652 | struct hci_dev *hdev = info->hdev; | |
653 | ||
654 | if (!hdev) | |
655 | return -ENODEV; | |
656 | ||
657 | bt3c_hci_close(hdev); | |
658 | ||
659 | if (hci_unregister_dev(hdev) < 0) | |
660 | BT_ERR("Can't unregister HCI device %s", hdev->name); | |
661 | ||
662 | hci_free_dev(hdev); | |
663 | ||
664 | return 0; | |
665 | } | |
666 | ||
667 | static dev_link_t *bt3c_attach(void) | |
668 | { | |
669 | bt3c_info_t *info; | |
670 | client_reg_t client_reg; | |
671 | dev_link_t *link; | |
672 | int ret; | |
673 | ||
674 | /* Create new info device */ | |
675 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
676 | if (!info) | |
677 | return NULL; | |
678 | memset(info, 0, sizeof(*info)); | |
679 | ||
680 | link = &info->link; | |
681 | link->priv = info; | |
682 | ||
683 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_8; | |
684 | link->io.NumPorts1 = 8; | |
685 | link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT; | |
686 | link->irq.IRQInfo1 = IRQ_LEVEL_ID; | |
687 | ||
688 | link->irq.Handler = bt3c_interrupt; | |
689 | link->irq.Instance = info; | |
690 | ||
691 | link->conf.Attributes = CONF_ENABLE_IRQ; | |
692 | link->conf.Vcc = 50; | |
693 | link->conf.IntType = INT_MEMORY_AND_IO; | |
694 | ||
695 | /* Register with Card Services */ | |
696 | link->next = dev_list; | |
697 | dev_list = link; | |
698 | client_reg.dev_info = &dev_info; | |
699 | client_reg.EventMask = | |
700 | CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL | | |
701 | CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET | | |
702 | CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME; | |
703 | client_reg.event_handler = &bt3c_event; | |
704 | client_reg.Version = 0x0210; | |
705 | client_reg.event_callback_args.client_data = link; | |
706 | ||
707 | ret = pcmcia_register_client(&link->handle, &client_reg); | |
708 | if (ret != CS_SUCCESS) { | |
709 | cs_error(link->handle, RegisterClient, ret); | |
710 | bt3c_detach(link); | |
711 | return NULL; | |
712 | } | |
713 | ||
714 | return link; | |
715 | } | |
716 | ||
717 | ||
718 | static void bt3c_detach(dev_link_t *link) | |
719 | { | |
720 | bt3c_info_t *info = link->priv; | |
721 | dev_link_t **linkp; | |
722 | int ret; | |
723 | ||
724 | /* Locate device structure */ | |
725 | for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next) | |
726 | if (*linkp == link) | |
727 | break; | |
728 | ||
729 | if (*linkp == NULL) | |
730 | return; | |
731 | ||
732 | if (link->state & DEV_CONFIG) | |
733 | bt3c_release(link); | |
734 | ||
735 | if (link->handle) { | |
736 | ret = pcmcia_deregister_client(link->handle); | |
737 | if (ret != CS_SUCCESS) | |
738 | cs_error(link->handle, DeregisterClient, ret); | |
739 | } | |
740 | ||
741 | /* Unlink device structure, free bits */ | |
742 | *linkp = link->next; | |
743 | ||
744 | kfree(info); | |
745 | } | |
746 | ||
747 | static int get_tuple(client_handle_t handle, tuple_t *tuple, cisparse_t *parse) | |
748 | { | |
749 | int i; | |
750 | ||
751 | i = pcmcia_get_tuple_data(handle, tuple); | |
752 | if (i != CS_SUCCESS) | |
753 | return i; | |
754 | ||
755 | return pcmcia_parse_tuple(handle, tuple, parse); | |
756 | } | |
757 | ||
758 | static int first_tuple(client_handle_t handle, tuple_t *tuple, cisparse_t *parse) | |
759 | { | |
760 | if (pcmcia_get_first_tuple(handle, tuple) != CS_SUCCESS) | |
761 | return CS_NO_MORE_ITEMS; | |
762 | return get_tuple(handle, tuple, parse); | |
763 | } | |
764 | ||
765 | static int next_tuple(client_handle_t handle, tuple_t *tuple, cisparse_t *parse) | |
766 | { | |
767 | if (pcmcia_get_next_tuple(handle, tuple) != CS_SUCCESS) | |
768 | return CS_NO_MORE_ITEMS; | |
769 | return get_tuple(handle, tuple, parse); | |
770 | } | |
771 | ||
772 | static void bt3c_config(dev_link_t *link) | |
773 | { | |
774 | static kio_addr_t base[5] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8, 0x0 }; | |
775 | client_handle_t handle = link->handle; | |
776 | bt3c_info_t *info = link->priv; | |
777 | tuple_t tuple; | |
778 | u_short buf[256]; | |
779 | cisparse_t parse; | |
780 | cistpl_cftable_entry_t *cf = &parse.cftable_entry; | |
781 | config_info_t config; | |
782 | int i, j, try, last_ret, last_fn; | |
783 | ||
784 | tuple.TupleData = (cisdata_t *)buf; | |
785 | tuple.TupleOffset = 0; | |
786 | tuple.TupleDataMax = 255; | |
787 | tuple.Attributes = 0; | |
788 | ||
789 | /* Get configuration register information */ | |
790 | tuple.DesiredTuple = CISTPL_CONFIG; | |
791 | last_ret = first_tuple(handle, &tuple, &parse); | |
792 | if (last_ret != CS_SUCCESS) { | |
793 | last_fn = ParseTuple; | |
794 | goto cs_failed; | |
795 | } | |
796 | link->conf.ConfigBase = parse.config.base; | |
797 | link->conf.Present = parse.config.rmask[0]; | |
798 | ||
799 | /* Configure card */ | |
800 | link->state |= DEV_CONFIG; | |
801 | i = pcmcia_get_configuration_info(handle, &config); | |
802 | link->conf.Vcc = config.Vcc; | |
803 | ||
804 | /* First pass: look for a config entry that looks normal. */ | |
805 | tuple.TupleData = (cisdata_t *)buf; | |
806 | tuple.TupleOffset = 0; | |
807 | tuple.TupleDataMax = 255; | |
808 | tuple.Attributes = 0; | |
809 | tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY; | |
810 | /* Two tries: without IO aliases, then with aliases */ | |
811 | for (try = 0; try < 2; try++) { | |
812 | i = first_tuple(handle, &tuple, &parse); | |
813 | while (i != CS_NO_MORE_ITEMS) { | |
814 | if (i != CS_SUCCESS) | |
815 | goto next_entry; | |
816 | if (cf->vpp1.present & (1 << CISTPL_POWER_VNOM)) | |
817 | link->conf.Vpp1 = link->conf.Vpp2 = cf->vpp1.param[CISTPL_POWER_VNOM] / 10000; | |
818 | if ((cf->io.nwin > 0) && (cf->io.win[0].len == 8) && (cf->io.win[0].base != 0)) { | |
819 | link->conf.ConfigIndex = cf->index; | |
820 | link->io.BasePort1 = cf->io.win[0].base; | |
821 | link->io.IOAddrLines = (try == 0) ? 16 : cf->io.flags & CISTPL_IO_LINES_MASK; | |
822 | i = pcmcia_request_io(link->handle, &link->io); | |
823 | if (i == CS_SUCCESS) | |
824 | goto found_port; | |
825 | } | |
826 | next_entry: | |
827 | i = next_tuple(handle, &tuple, &parse); | |
828 | } | |
829 | } | |
830 | ||
831 | /* Second pass: try to find an entry that isn't picky about | |
832 | its base address, then try to grab any standard serial port | |
833 | address, and finally try to get any free port. */ | |
834 | i = first_tuple(handle, &tuple, &parse); | |
835 | while (i != CS_NO_MORE_ITEMS) { | |
836 | if ((i == CS_SUCCESS) && (cf->io.nwin > 0) && ((cf->io.flags & CISTPL_IO_LINES_MASK) <= 3)) { | |
837 | link->conf.ConfigIndex = cf->index; | |
838 | for (j = 0; j < 5; j++) { | |
839 | link->io.BasePort1 = base[j]; | |
840 | link->io.IOAddrLines = base[j] ? 16 : 3; | |
841 | i = pcmcia_request_io(link->handle, &link->io); | |
842 | if (i == CS_SUCCESS) | |
843 | goto found_port; | |
844 | } | |
845 | } | |
846 | i = next_tuple(handle, &tuple, &parse); | |
847 | } | |
848 | ||
849 | found_port: | |
850 | if (i != CS_SUCCESS) { | |
851 | BT_ERR("No usable port range found"); | |
852 | cs_error(link->handle, RequestIO, i); | |
853 | goto failed; | |
854 | } | |
855 | ||
856 | i = pcmcia_request_irq(link->handle, &link->irq); | |
857 | if (i != CS_SUCCESS) { | |
858 | cs_error(link->handle, RequestIRQ, i); | |
859 | link->irq.AssignedIRQ = 0; | |
860 | } | |
861 | ||
862 | i = pcmcia_request_configuration(link->handle, &link->conf); | |
863 | if (i != CS_SUCCESS) { | |
864 | cs_error(link->handle, RequestConfiguration, i); | |
865 | goto failed; | |
866 | } | |
867 | ||
868 | if (bt3c_open(info) != 0) | |
869 | goto failed; | |
870 | ||
871 | strcpy(info->node.dev_name, info->hdev->name); | |
872 | link->dev = &info->node; | |
873 | link->state &= ~DEV_CONFIG_PENDING; | |
874 | ||
875 | return; | |
876 | ||
877 | cs_failed: | |
878 | cs_error(link->handle, last_fn, last_ret); | |
879 | ||
880 | failed: | |
881 | bt3c_release(link); | |
882 | } | |
883 | ||
884 | ||
885 | static void bt3c_release(dev_link_t *link) | |
886 | { | |
887 | bt3c_info_t *info = link->priv; | |
888 | ||
889 | if (link->state & DEV_PRESENT) | |
890 | bt3c_close(info); | |
891 | ||
892 | link->dev = NULL; | |
893 | ||
894 | pcmcia_release_configuration(link->handle); | |
895 | pcmcia_release_io(link->handle, &link->io); | |
896 | pcmcia_release_irq(link->handle, &link->irq); | |
897 | ||
898 | link->state &= ~DEV_CONFIG; | |
899 | } | |
900 | ||
901 | ||
902 | static int bt3c_event(event_t event, int priority, event_callback_args_t *args) | |
903 | { | |
904 | dev_link_t *link = args->client_data; | |
905 | bt3c_info_t *info = link->priv; | |
906 | ||
907 | switch (event) { | |
908 | case CS_EVENT_CARD_REMOVAL: | |
909 | link->state &= ~DEV_PRESENT; | |
910 | if (link->state & DEV_CONFIG) { | |
911 | bt3c_close(info); | |
912 | bt3c_release(link); | |
913 | } | |
914 | break; | |
915 | case CS_EVENT_CARD_INSERTION: | |
916 | link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; | |
917 | bt3c_config(link); | |
918 | break; | |
919 | case CS_EVENT_PM_SUSPEND: | |
920 | link->state |= DEV_SUSPEND; | |
921 | /* Fall through... */ | |
922 | case CS_EVENT_RESET_PHYSICAL: | |
923 | if (link->state & DEV_CONFIG) | |
924 | pcmcia_release_configuration(link->handle); | |
925 | break; | |
926 | case CS_EVENT_PM_RESUME: | |
927 | link->state &= ~DEV_SUSPEND; | |
928 | /* Fall through... */ | |
929 | case CS_EVENT_CARD_RESET: | |
930 | if (DEV_OK(link)) | |
931 | pcmcia_request_configuration(link->handle, &link->conf); | |
932 | break; | |
933 | } | |
934 | ||
935 | return 0; | |
936 | } | |
937 | ||
938 | static struct pcmcia_driver bt3c_driver = { | |
939 | .owner = THIS_MODULE, | |
940 | .drv = { | |
941 | .name = "bt3c_cs", | |
942 | }, | |
943 | .attach = bt3c_attach, | |
944 | .detach = bt3c_detach, | |
945 | }; | |
946 | ||
947 | static int __init init_bt3c_cs(void) | |
948 | { | |
949 | return pcmcia_register_driver(&bt3c_driver); | |
950 | } | |
951 | ||
952 | ||
953 | static void __exit exit_bt3c_cs(void) | |
954 | { | |
955 | pcmcia_unregister_driver(&bt3c_driver); | |
956 | BUG_ON(dev_list != NULL); | |
957 | } | |
958 | ||
959 | module_init(init_bt3c_cs); | |
960 | module_exit(exit_bt3c_cs); |