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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 | ||
1da177e4 LT |
50 | #include <pcmcia/cs_types.h> |
51 | #include <pcmcia/cs.h> | |
52 | #include <pcmcia/cistpl.h> | |
53 | #include <pcmcia/ciscode.h> | |
54 | #include <pcmcia/ds.h> | |
55 | #include <pcmcia/cisreg.h> | |
56 | ||
57 | #include <net/bluetooth/bluetooth.h> | |
58 | #include <net/bluetooth/hci_core.h> | |
59 | ||
60 | ||
61 | ||
62 | /* ======================== Module parameters ======================== */ | |
63 | ||
64 | ||
65 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>, Jose Orlando Pereira <jop@di.uminho.pt>"); | |
66 | MODULE_DESCRIPTION("Bluetooth driver for the 3Com Bluetooth PCMCIA card"); | |
67 | MODULE_LICENSE("GPL"); | |
68 | ||
69 | ||
70 | ||
71 | /* ======================== Local structures ======================== */ | |
72 | ||
73 | ||
74 | typedef struct bt3c_info_t { | |
75 | dev_link_t link; | |
76 | dev_node_t node; | |
77 | ||
78 | struct hci_dev *hdev; | |
79 | ||
80 | spinlock_t lock; /* For serializing operations */ | |
81 | ||
82 | struct sk_buff_head txq; | |
83 | unsigned long tx_state; | |
84 | ||
85 | unsigned long rx_state; | |
86 | unsigned long rx_count; | |
87 | struct sk_buff *rx_skb; | |
88 | } bt3c_info_t; | |
89 | ||
90 | ||
91 | static void bt3c_config(dev_link_t *link); | |
92 | static void bt3c_release(dev_link_t *link); | |
93 | static int bt3c_event(event_t event, int priority, event_callback_args_t *args); | |
94 | ||
95 | static dev_info_t dev_info = "bt3c_cs"; | |
96 | ||
97 | static dev_link_t *bt3c_attach(void); | |
98 | static void bt3c_detach(dev_link_t *); | |
99 | ||
100 | static dev_link_t *dev_list = NULL; | |
101 | ||
102 | ||
103 | /* Transmit states */ | |
104 | #define XMIT_SENDING 1 | |
105 | #define XMIT_WAKEUP 2 | |
106 | #define XMIT_WAITING 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 | ||
116 | ||
117 | /* ======================== Special I/O functions ======================== */ | |
118 | ||
119 | ||
120 | #define DATA_L 0 | |
121 | #define DATA_H 1 | |
122 | #define ADDR_L 2 | |
123 | #define ADDR_H 3 | |
124 | #define CONTROL 4 | |
125 | ||
126 | ||
127 | static inline void bt3c_address(unsigned int iobase, unsigned short addr) | |
128 | { | |
129 | outb(addr & 0xff, iobase + ADDR_L); | |
130 | outb((addr >> 8) & 0xff, iobase + ADDR_H); | |
131 | } | |
132 | ||
133 | ||
134 | static inline void bt3c_put(unsigned int iobase, unsigned short value) | |
135 | { | |
136 | outb(value & 0xff, iobase + DATA_L); | |
137 | outb((value >> 8) & 0xff, iobase + DATA_H); | |
138 | } | |
139 | ||
140 | ||
141 | static inline void bt3c_io_write(unsigned int iobase, unsigned short addr, unsigned short value) | |
142 | { | |
143 | bt3c_address(iobase, addr); | |
144 | bt3c_put(iobase, value); | |
145 | } | |
146 | ||
147 | ||
148 | static inline unsigned short bt3c_get(unsigned int iobase) | |
149 | { | |
150 | unsigned short value = inb(iobase + DATA_L); | |
151 | ||
152 | value |= inb(iobase + DATA_H) << 8; | |
153 | ||
154 | return value; | |
155 | } | |
156 | ||
157 | ||
158 | static inline unsigned short bt3c_read(unsigned int iobase, unsigned short addr) | |
159 | { | |
160 | bt3c_address(iobase, addr); | |
161 | ||
162 | return bt3c_get(iobase); | |
163 | } | |
164 | ||
165 | ||
166 | ||
167 | /* ======================== Interrupt handling ======================== */ | |
168 | ||
169 | ||
170 | static int bt3c_write(unsigned int iobase, int fifo_size, __u8 *buf, int len) | |
171 | { | |
172 | int actual = 0; | |
173 | ||
174 | bt3c_address(iobase, 0x7080); | |
175 | ||
176 | /* Fill FIFO with current frame */ | |
177 | while (actual < len) { | |
178 | /* Transmit next byte */ | |
179 | bt3c_put(iobase, buf[actual]); | |
180 | actual++; | |
181 | } | |
182 | ||
183 | bt3c_io_write(iobase, 0x7005, actual); | |
184 | ||
185 | return actual; | |
186 | } | |
187 | ||
188 | ||
189 | static void bt3c_write_wakeup(bt3c_info_t *info) | |
190 | { | |
191 | if (!info) { | |
192 | BT_ERR("Unknown device"); | |
193 | return; | |
194 | } | |
195 | ||
196 | if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) | |
197 | return; | |
198 | ||
199 | do { | |
200 | register unsigned int iobase = info->link.io.BasePort1; | |
201 | register struct sk_buff *skb; | |
202 | register int len; | |
203 | ||
204 | if (!(info->link.state & DEV_PRESENT)) | |
205 | break; | |
206 | ||
207 | ||
208 | if (!(skb = skb_dequeue(&(info->txq)))) { | |
209 | clear_bit(XMIT_SENDING, &(info->tx_state)); | |
210 | break; | |
211 | } | |
212 | ||
213 | /* Send frame */ | |
214 | len = bt3c_write(iobase, 256, skb->data, skb->len); | |
215 | ||
216 | if (len != skb->len) { | |
217 | BT_ERR("Very strange"); | |
218 | } | |
219 | ||
220 | kfree_skb(skb); | |
221 | ||
222 | info->hdev->stat.byte_tx += len; | |
223 | ||
224 | } while (0); | |
225 | } | |
226 | ||
227 | ||
228 | static void bt3c_receive(bt3c_info_t *info) | |
229 | { | |
230 | unsigned int iobase; | |
231 | int size = 0, avail; | |
232 | ||
233 | if (!info) { | |
234 | BT_ERR("Unknown device"); | |
235 | return; | |
236 | } | |
237 | ||
238 | iobase = info->link.io.BasePort1; | |
239 | ||
240 | avail = bt3c_read(iobase, 0x7006); | |
241 | //printk("bt3c_cs: receiving %d bytes\n", avail); | |
242 | ||
243 | bt3c_address(iobase, 0x7480); | |
244 | while (size < avail) { | |
245 | size++; | |
246 | info->hdev->stat.byte_rx++; | |
247 | ||
248 | /* Allocate packet */ | |
249 | if (info->rx_skb == NULL) { | |
250 | info->rx_state = RECV_WAIT_PACKET_TYPE; | |
251 | info->rx_count = 0; | |
252 | if (!(info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) { | |
253 | BT_ERR("Can't allocate mem for new packet"); | |
254 | return; | |
255 | } | |
256 | } | |
257 | ||
258 | ||
259 | if (info->rx_state == RECV_WAIT_PACKET_TYPE) { | |
260 | ||
261 | info->rx_skb->dev = (void *) info->hdev; | |
0d48d939 | 262 | bt_cb(info->rx_skb)->pkt_type = inb(iobase + DATA_L); |
1da177e4 | 263 | inb(iobase + DATA_H); |
0d48d939 | 264 | //printk("bt3c: PACKET_TYPE=%02x\n", bt_cb(info->rx_skb)->pkt_type); |
1da177e4 | 265 | |
0d48d939 | 266 | switch (bt_cb(info->rx_skb)->pkt_type) { |
1da177e4 LT |
267 | |
268 | case HCI_EVENT_PKT: | |
269 | info->rx_state = RECV_WAIT_EVENT_HEADER; | |
270 | info->rx_count = HCI_EVENT_HDR_SIZE; | |
271 | break; | |
272 | ||
273 | case HCI_ACLDATA_PKT: | |
274 | info->rx_state = RECV_WAIT_ACL_HEADER; | |
275 | info->rx_count = HCI_ACL_HDR_SIZE; | |
276 | break; | |
277 | ||
278 | case HCI_SCODATA_PKT: | |
279 | info->rx_state = RECV_WAIT_SCO_HEADER; | |
280 | info->rx_count = HCI_SCO_HDR_SIZE; | |
281 | break; | |
282 | ||
283 | default: | |
284 | /* Unknown packet */ | |
0d48d939 | 285 | BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type); |
1da177e4 LT |
286 | info->hdev->stat.err_rx++; |
287 | clear_bit(HCI_RUNNING, &(info->hdev->flags)); | |
288 | ||
289 | kfree_skb(info->rx_skb); | |
290 | info->rx_skb = NULL; | |
291 | break; | |
292 | ||
293 | } | |
294 | ||
295 | } else { | |
296 | ||
297 | __u8 x = inb(iobase + DATA_L); | |
298 | ||
299 | *skb_put(info->rx_skb, 1) = x; | |
300 | inb(iobase + DATA_H); | |
301 | info->rx_count--; | |
302 | ||
303 | if (info->rx_count == 0) { | |
304 | ||
305 | int dlen; | |
306 | struct hci_event_hdr *eh; | |
307 | struct hci_acl_hdr *ah; | |
308 | struct hci_sco_hdr *sh; | |
309 | ||
310 | switch (info->rx_state) { | |
311 | ||
312 | case RECV_WAIT_EVENT_HEADER: | |
313 | eh = (struct hci_event_hdr *)(info->rx_skb->data); | |
314 | info->rx_state = RECV_WAIT_DATA; | |
315 | info->rx_count = eh->plen; | |
316 | break; | |
317 | ||
318 | case RECV_WAIT_ACL_HEADER: | |
319 | ah = (struct hci_acl_hdr *)(info->rx_skb->data); | |
320 | dlen = __le16_to_cpu(ah->dlen); | |
321 | info->rx_state = RECV_WAIT_DATA; | |
322 | info->rx_count = dlen; | |
323 | break; | |
324 | ||
325 | case RECV_WAIT_SCO_HEADER: | |
326 | sh = (struct hci_sco_hdr *)(info->rx_skb->data); | |
327 | info->rx_state = RECV_WAIT_DATA; | |
328 | info->rx_count = sh->dlen; | |
329 | break; | |
330 | ||
331 | case RECV_WAIT_DATA: | |
332 | hci_recv_frame(info->rx_skb); | |
333 | info->rx_skb = NULL; | |
334 | break; | |
335 | ||
336 | } | |
337 | ||
338 | } | |
339 | ||
340 | } | |
341 | ||
342 | } | |
343 | ||
344 | bt3c_io_write(iobase, 0x7006, 0x0000); | |
345 | } | |
346 | ||
347 | ||
348 | static irqreturn_t bt3c_interrupt(int irq, void *dev_inst, struct pt_regs *regs) | |
349 | { | |
350 | bt3c_info_t *info = dev_inst; | |
351 | unsigned int iobase; | |
352 | int iir; | |
353 | ||
354 | if (!info || !info->hdev) { | |
355 | BT_ERR("Call of irq %d for unknown device", irq); | |
356 | return IRQ_NONE; | |
357 | } | |
358 | ||
359 | iobase = info->link.io.BasePort1; | |
360 | ||
361 | spin_lock(&(info->lock)); | |
362 | ||
363 | iir = inb(iobase + CONTROL); | |
364 | if (iir & 0x80) { | |
365 | int stat = bt3c_read(iobase, 0x7001); | |
366 | ||
367 | if ((stat & 0xff) == 0x7f) { | |
368 | BT_ERR("Very strange (stat=0x%04x)", stat); | |
369 | } else if ((stat & 0xff) != 0xff) { | |
370 | if (stat & 0x0020) { | |
371 | int stat = bt3c_read(iobase, 0x7002) & 0x10; | |
372 | BT_INFO("%s: Antenna %s", info->hdev->name, | |
373 | stat ? "out" : "in"); | |
374 | } | |
375 | if (stat & 0x0001) | |
376 | bt3c_receive(info); | |
377 | if (stat & 0x0002) { | |
378 | //BT_ERR("Ack (stat=0x%04x)", stat); | |
379 | clear_bit(XMIT_SENDING, &(info->tx_state)); | |
380 | bt3c_write_wakeup(info); | |
381 | } | |
382 | ||
383 | bt3c_io_write(iobase, 0x7001, 0x0000); | |
384 | ||
385 | outb(iir, iobase + CONTROL); | |
386 | } | |
387 | } | |
388 | ||
389 | spin_unlock(&(info->lock)); | |
390 | ||
391 | return IRQ_HANDLED; | |
392 | } | |
393 | ||
394 | ||
395 | ||
396 | /* ======================== HCI interface ======================== */ | |
397 | ||
398 | ||
399 | static int bt3c_hci_flush(struct hci_dev *hdev) | |
400 | { | |
401 | bt3c_info_t *info = (bt3c_info_t *)(hdev->driver_data); | |
402 | ||
403 | /* Drop TX queue */ | |
404 | skb_queue_purge(&(info->txq)); | |
405 | ||
406 | return 0; | |
407 | } | |
408 | ||
409 | ||
410 | static int bt3c_hci_open(struct hci_dev *hdev) | |
411 | { | |
412 | set_bit(HCI_RUNNING, &(hdev->flags)); | |
413 | ||
414 | return 0; | |
415 | } | |
416 | ||
417 | ||
418 | static int bt3c_hci_close(struct hci_dev *hdev) | |
419 | { | |
420 | if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags))) | |
421 | return 0; | |
422 | ||
423 | bt3c_hci_flush(hdev); | |
424 | ||
425 | return 0; | |
426 | } | |
427 | ||
428 | ||
429 | static int bt3c_hci_send_frame(struct sk_buff *skb) | |
430 | { | |
431 | bt3c_info_t *info; | |
432 | struct hci_dev *hdev = (struct hci_dev *)(skb->dev); | |
433 | unsigned long flags; | |
434 | ||
435 | if (!hdev) { | |
436 | BT_ERR("Frame for unknown HCI device (hdev=NULL)"); | |
437 | return -ENODEV; | |
438 | } | |
439 | ||
440 | info = (bt3c_info_t *) (hdev->driver_data); | |
441 | ||
0d48d939 | 442 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
443 | case HCI_COMMAND_PKT: |
444 | hdev->stat.cmd_tx++; | |
445 | break; | |
446 | case HCI_ACLDATA_PKT: | |
447 | hdev->stat.acl_tx++; | |
448 | break; | |
449 | case HCI_SCODATA_PKT: | |
450 | hdev->stat.sco_tx++; | |
451 | break; | |
452 | }; | |
453 | ||
454 | /* Prepend skb with frame type */ | |
0d48d939 | 455 | memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1); |
1da177e4 LT |
456 | skb_queue_tail(&(info->txq), skb); |
457 | ||
458 | spin_lock_irqsave(&(info->lock), flags); | |
459 | ||
460 | bt3c_write_wakeup(info); | |
461 | ||
462 | spin_unlock_irqrestore(&(info->lock), flags); | |
463 | ||
464 | return 0; | |
465 | } | |
466 | ||
467 | ||
468 | static void bt3c_hci_destruct(struct hci_dev *hdev) | |
469 | { | |
470 | } | |
471 | ||
472 | ||
473 | static int bt3c_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg) | |
474 | { | |
475 | return -ENOIOCTLCMD; | |
476 | } | |
477 | ||
478 | ||
479 | ||
480 | /* ======================== Card services HCI interaction ======================== */ | |
481 | ||
482 | ||
483 | static struct device *bt3c_device(void) | |
484 | { | |
485 | static struct device dev = { | |
486 | .bus_id = "pcmcia", | |
487 | }; | |
488 | kobject_set_name(&dev.kobj, "bt3c"); | |
489 | kobject_init(&dev.kobj); | |
490 | ||
491 | return &dev; | |
492 | } | |
493 | ||
494 | ||
495 | static int bt3c_load_firmware(bt3c_info_t *info, unsigned char *firmware, int count) | |
496 | { | |
497 | char *ptr = (char *) firmware; | |
498 | char b[9]; | |
499 | unsigned int iobase, size, addr, fcs, tmp; | |
500 | int i, err = 0; | |
501 | ||
502 | iobase = info->link.io.BasePort1; | |
503 | ||
504 | /* Reset */ | |
505 | bt3c_io_write(iobase, 0x8040, 0x0404); | |
506 | bt3c_io_write(iobase, 0x8040, 0x0400); | |
507 | ||
508 | udelay(1); | |
509 | ||
510 | bt3c_io_write(iobase, 0x8040, 0x0404); | |
511 | ||
512 | udelay(17); | |
513 | ||
514 | /* Load */ | |
515 | while (count) { | |
516 | if (ptr[0] != 'S') { | |
517 | BT_ERR("Bad address in firmware"); | |
518 | err = -EFAULT; | |
519 | goto error; | |
520 | } | |
521 | ||
522 | memset(b, 0, sizeof(b)); | |
523 | memcpy(b, ptr + 2, 2); | |
524 | size = simple_strtol(b, NULL, 16); | |
525 | ||
526 | memset(b, 0, sizeof(b)); | |
527 | memcpy(b, ptr + 4, 8); | |
528 | addr = simple_strtol(b, NULL, 16); | |
529 | ||
530 | memset(b, 0, sizeof(b)); | |
531 | memcpy(b, ptr + (size * 2) + 2, 2); | |
532 | fcs = simple_strtol(b, NULL, 16); | |
533 | ||
534 | memset(b, 0, sizeof(b)); | |
535 | for (tmp = 0, i = 0; i < size; i++) { | |
536 | memcpy(b, ptr + (i * 2) + 2, 2); | |
537 | tmp += simple_strtol(b, NULL, 16); | |
538 | } | |
539 | ||
540 | if (((tmp + fcs) & 0xff) != 0xff) { | |
541 | BT_ERR("Checksum error in firmware"); | |
542 | err = -EILSEQ; | |
543 | goto error; | |
544 | } | |
545 | ||
546 | if (ptr[1] == '3') { | |
547 | bt3c_address(iobase, addr); | |
548 | ||
549 | memset(b, 0, sizeof(b)); | |
550 | for (i = 0; i < (size - 4) / 2; i++) { | |
551 | memcpy(b, ptr + (i * 4) + 12, 4); | |
552 | tmp = simple_strtol(b, NULL, 16); | |
553 | bt3c_put(iobase, tmp); | |
554 | } | |
555 | } | |
556 | ||
557 | ptr += (size * 2) + 6; | |
558 | count -= (size * 2) + 6; | |
559 | } | |
560 | ||
561 | udelay(17); | |
562 | ||
563 | /* Boot */ | |
564 | bt3c_address(iobase, 0x3000); | |
565 | outb(inb(iobase + CONTROL) | 0x40, iobase + CONTROL); | |
566 | ||
567 | error: | |
568 | udelay(17); | |
569 | ||
570 | /* Clear */ | |
571 | bt3c_io_write(iobase, 0x7006, 0x0000); | |
572 | bt3c_io_write(iobase, 0x7005, 0x0000); | |
573 | bt3c_io_write(iobase, 0x7001, 0x0000); | |
574 | ||
575 | return err; | |
576 | } | |
577 | ||
578 | ||
579 | static int bt3c_open(bt3c_info_t *info) | |
580 | { | |
581 | const struct firmware *firmware; | |
582 | struct hci_dev *hdev; | |
583 | int err; | |
584 | ||
585 | spin_lock_init(&(info->lock)); | |
586 | ||
587 | skb_queue_head_init(&(info->txq)); | |
588 | ||
589 | info->rx_state = RECV_WAIT_PACKET_TYPE; | |
590 | info->rx_count = 0; | |
591 | info->rx_skb = NULL; | |
592 | ||
593 | /* Initialize HCI device */ | |
594 | hdev = hci_alloc_dev(); | |
595 | if (!hdev) { | |
596 | BT_ERR("Can't allocate HCI device"); | |
597 | return -ENOMEM; | |
598 | } | |
599 | ||
600 | info->hdev = hdev; | |
601 | ||
602 | hdev->type = HCI_PCCARD; | |
603 | hdev->driver_data = info; | |
604 | ||
605 | hdev->open = bt3c_hci_open; | |
606 | hdev->close = bt3c_hci_close; | |
607 | hdev->flush = bt3c_hci_flush; | |
608 | hdev->send = bt3c_hci_send_frame; | |
609 | hdev->destruct = bt3c_hci_destruct; | |
610 | hdev->ioctl = bt3c_hci_ioctl; | |
611 | ||
612 | hdev->owner = THIS_MODULE; | |
613 | ||
614 | /* Load firmware */ | |
615 | err = request_firmware(&firmware, "BT3CPCC.bin", bt3c_device()); | |
616 | if (err < 0) { | |
617 | BT_ERR("Firmware request failed"); | |
618 | goto error; | |
619 | } | |
620 | ||
621 | err = bt3c_load_firmware(info, firmware->data, firmware->size); | |
622 | ||
623 | release_firmware(firmware); | |
624 | ||
625 | if (err < 0) { | |
626 | BT_ERR("Firmware loading failed"); | |
627 | goto error; | |
628 | } | |
629 | ||
630 | /* Timeout before it is safe to send the first HCI packet */ | |
631 | msleep(1000); | |
632 | ||
633 | /* Register HCI device */ | |
634 | err = hci_register_dev(hdev); | |
635 | if (err < 0) { | |
636 | BT_ERR("Can't register HCI device"); | |
637 | goto error; | |
638 | } | |
639 | ||
640 | return 0; | |
641 | ||
642 | error: | |
643 | info->hdev = NULL; | |
644 | hci_free_dev(hdev); | |
645 | return err; | |
646 | } | |
647 | ||
648 | ||
649 | static int bt3c_close(bt3c_info_t *info) | |
650 | { | |
651 | struct hci_dev *hdev = info->hdev; | |
652 | ||
653 | if (!hdev) | |
654 | return -ENODEV; | |
655 | ||
656 | bt3c_hci_close(hdev); | |
657 | ||
658 | if (hci_unregister_dev(hdev) < 0) | |
659 | BT_ERR("Can't unregister HCI device %s", hdev->name); | |
660 | ||
661 | hci_free_dev(hdev); | |
662 | ||
663 | return 0; | |
664 | } | |
665 | ||
666 | static dev_link_t *bt3c_attach(void) | |
667 | { | |
668 | bt3c_info_t *info; | |
669 | client_reg_t client_reg; | |
670 | dev_link_t *link; | |
671 | int ret; | |
672 | ||
673 | /* Create new info device */ | |
674 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
675 | if (!info) | |
676 | return NULL; | |
677 | memset(info, 0, sizeof(*info)); | |
678 | ||
679 | link = &info->link; | |
680 | link->priv = info; | |
681 | ||
682 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_8; | |
683 | link->io.NumPorts1 = 8; | |
684 | link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT; | |
685 | link->irq.IRQInfo1 = IRQ_LEVEL_ID; | |
686 | ||
687 | link->irq.Handler = bt3c_interrupt; | |
688 | link->irq.Instance = info; | |
689 | ||
690 | link->conf.Attributes = CONF_ENABLE_IRQ; | |
691 | link->conf.Vcc = 50; | |
692 | link->conf.IntType = INT_MEMORY_AND_IO; | |
693 | ||
694 | /* Register with Card Services */ | |
695 | link->next = dev_list; | |
696 | dev_list = link; | |
697 | client_reg.dev_info = &dev_info; | |
1da177e4 LT |
698 | client_reg.Version = 0x0210; |
699 | client_reg.event_callback_args.client_data = link; | |
700 | ||
701 | ret = pcmcia_register_client(&link->handle, &client_reg); | |
702 | if (ret != CS_SUCCESS) { | |
703 | cs_error(link->handle, RegisterClient, ret); | |
704 | bt3c_detach(link); | |
705 | return NULL; | |
706 | } | |
707 | ||
708 | return link; | |
709 | } | |
710 | ||
711 | ||
712 | static void bt3c_detach(dev_link_t *link) | |
713 | { | |
714 | bt3c_info_t *info = link->priv; | |
715 | dev_link_t **linkp; | |
716 | int ret; | |
717 | ||
718 | /* Locate device structure */ | |
719 | for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next) | |
720 | if (*linkp == link) | |
721 | break; | |
722 | ||
723 | if (*linkp == NULL) | |
724 | return; | |
725 | ||
726 | if (link->state & DEV_CONFIG) | |
727 | bt3c_release(link); | |
728 | ||
729 | if (link->handle) { | |
730 | ret = pcmcia_deregister_client(link->handle); | |
731 | if (ret != CS_SUCCESS) | |
732 | cs_error(link->handle, DeregisterClient, ret); | |
733 | } | |
734 | ||
735 | /* Unlink device structure, free bits */ | |
736 | *linkp = link->next; | |
737 | ||
738 | kfree(info); | |
739 | } | |
740 | ||
741 | static int get_tuple(client_handle_t handle, tuple_t *tuple, cisparse_t *parse) | |
742 | { | |
743 | int i; | |
744 | ||
745 | i = pcmcia_get_tuple_data(handle, tuple); | |
746 | if (i != CS_SUCCESS) | |
747 | return i; | |
748 | ||
749 | return pcmcia_parse_tuple(handle, tuple, parse); | |
750 | } | |
751 | ||
752 | static int first_tuple(client_handle_t handle, tuple_t *tuple, cisparse_t *parse) | |
753 | { | |
754 | if (pcmcia_get_first_tuple(handle, tuple) != CS_SUCCESS) | |
755 | return CS_NO_MORE_ITEMS; | |
756 | return get_tuple(handle, tuple, parse); | |
757 | } | |
758 | ||
759 | static int next_tuple(client_handle_t handle, tuple_t *tuple, cisparse_t *parse) | |
760 | { | |
761 | if (pcmcia_get_next_tuple(handle, tuple) != CS_SUCCESS) | |
762 | return CS_NO_MORE_ITEMS; | |
763 | return get_tuple(handle, tuple, parse); | |
764 | } | |
765 | ||
766 | static void bt3c_config(dev_link_t *link) | |
767 | { | |
768 | static kio_addr_t base[5] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8, 0x0 }; | |
769 | client_handle_t handle = link->handle; | |
770 | bt3c_info_t *info = link->priv; | |
771 | tuple_t tuple; | |
772 | u_short buf[256]; | |
773 | cisparse_t parse; | |
774 | cistpl_cftable_entry_t *cf = &parse.cftable_entry; | |
775 | config_info_t config; | |
776 | int i, j, try, last_ret, last_fn; | |
777 | ||
778 | tuple.TupleData = (cisdata_t *)buf; | |
779 | tuple.TupleOffset = 0; | |
780 | tuple.TupleDataMax = 255; | |
781 | tuple.Attributes = 0; | |
782 | ||
783 | /* Get configuration register information */ | |
784 | tuple.DesiredTuple = CISTPL_CONFIG; | |
785 | last_ret = first_tuple(handle, &tuple, &parse); | |
786 | if (last_ret != CS_SUCCESS) { | |
787 | last_fn = ParseTuple; | |
788 | goto cs_failed; | |
789 | } | |
790 | link->conf.ConfigBase = parse.config.base; | |
791 | link->conf.Present = parse.config.rmask[0]; | |
792 | ||
793 | /* Configure card */ | |
794 | link->state |= DEV_CONFIG; | |
795 | i = pcmcia_get_configuration_info(handle, &config); | |
796 | link->conf.Vcc = config.Vcc; | |
797 | ||
798 | /* First pass: look for a config entry that looks normal. */ | |
799 | tuple.TupleData = (cisdata_t *)buf; | |
800 | tuple.TupleOffset = 0; | |
801 | tuple.TupleDataMax = 255; | |
802 | tuple.Attributes = 0; | |
803 | tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY; | |
804 | /* Two tries: without IO aliases, then with aliases */ | |
805 | for (try = 0; try < 2; try++) { | |
806 | i = first_tuple(handle, &tuple, &parse); | |
807 | while (i != CS_NO_MORE_ITEMS) { | |
808 | if (i != CS_SUCCESS) | |
809 | goto next_entry; | |
810 | if (cf->vpp1.present & (1 << CISTPL_POWER_VNOM)) | |
811 | link->conf.Vpp1 = link->conf.Vpp2 = cf->vpp1.param[CISTPL_POWER_VNOM] / 10000; | |
812 | if ((cf->io.nwin > 0) && (cf->io.win[0].len == 8) && (cf->io.win[0].base != 0)) { | |
813 | link->conf.ConfigIndex = cf->index; | |
814 | link->io.BasePort1 = cf->io.win[0].base; | |
815 | link->io.IOAddrLines = (try == 0) ? 16 : cf->io.flags & CISTPL_IO_LINES_MASK; | |
816 | i = pcmcia_request_io(link->handle, &link->io); | |
817 | if (i == CS_SUCCESS) | |
818 | goto found_port; | |
819 | } | |
820 | next_entry: | |
821 | i = next_tuple(handle, &tuple, &parse); | |
822 | } | |
823 | } | |
824 | ||
825 | /* Second pass: try to find an entry that isn't picky about | |
826 | its base address, then try to grab any standard serial port | |
827 | address, and finally try to get any free port. */ | |
828 | i = first_tuple(handle, &tuple, &parse); | |
829 | while (i != CS_NO_MORE_ITEMS) { | |
830 | if ((i == CS_SUCCESS) && (cf->io.nwin > 0) && ((cf->io.flags & CISTPL_IO_LINES_MASK) <= 3)) { | |
831 | link->conf.ConfigIndex = cf->index; | |
832 | for (j = 0; j < 5; j++) { | |
833 | link->io.BasePort1 = base[j]; | |
834 | link->io.IOAddrLines = base[j] ? 16 : 3; | |
835 | i = pcmcia_request_io(link->handle, &link->io); | |
836 | if (i == CS_SUCCESS) | |
837 | goto found_port; | |
838 | } | |
839 | } | |
840 | i = next_tuple(handle, &tuple, &parse); | |
841 | } | |
842 | ||
843 | found_port: | |
844 | if (i != CS_SUCCESS) { | |
845 | BT_ERR("No usable port range found"); | |
846 | cs_error(link->handle, RequestIO, i); | |
847 | goto failed; | |
848 | } | |
849 | ||
850 | i = pcmcia_request_irq(link->handle, &link->irq); | |
851 | if (i != CS_SUCCESS) { | |
852 | cs_error(link->handle, RequestIRQ, i); | |
853 | link->irq.AssignedIRQ = 0; | |
854 | } | |
855 | ||
856 | i = pcmcia_request_configuration(link->handle, &link->conf); | |
857 | if (i != CS_SUCCESS) { | |
858 | cs_error(link->handle, RequestConfiguration, i); | |
859 | goto failed; | |
860 | } | |
861 | ||
862 | if (bt3c_open(info) != 0) | |
863 | goto failed; | |
864 | ||
865 | strcpy(info->node.dev_name, info->hdev->name); | |
866 | link->dev = &info->node; | |
867 | link->state &= ~DEV_CONFIG_PENDING; | |
868 | ||
869 | return; | |
870 | ||
871 | cs_failed: | |
872 | cs_error(link->handle, last_fn, last_ret); | |
873 | ||
874 | failed: | |
875 | bt3c_release(link); | |
876 | } | |
877 | ||
878 | ||
879 | static void bt3c_release(dev_link_t *link) | |
880 | { | |
881 | bt3c_info_t *info = link->priv; | |
882 | ||
883 | if (link->state & DEV_PRESENT) | |
884 | bt3c_close(info); | |
885 | ||
886 | link->dev = NULL; | |
887 | ||
888 | pcmcia_release_configuration(link->handle); | |
889 | pcmcia_release_io(link->handle, &link->io); | |
890 | pcmcia_release_irq(link->handle, &link->irq); | |
891 | ||
892 | link->state &= ~DEV_CONFIG; | |
893 | } | |
894 | ||
895 | ||
896 | static int bt3c_event(event_t event, int priority, event_callback_args_t *args) | |
897 | { | |
898 | dev_link_t *link = args->client_data; | |
899 | bt3c_info_t *info = link->priv; | |
900 | ||
901 | switch (event) { | |
902 | case CS_EVENT_CARD_REMOVAL: | |
903 | link->state &= ~DEV_PRESENT; | |
904 | if (link->state & DEV_CONFIG) { | |
905 | bt3c_close(info); | |
906 | bt3c_release(link); | |
907 | } | |
908 | break; | |
909 | case CS_EVENT_CARD_INSERTION: | |
910 | link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; | |
911 | bt3c_config(link); | |
912 | break; | |
913 | case CS_EVENT_PM_SUSPEND: | |
914 | link->state |= DEV_SUSPEND; | |
915 | /* Fall through... */ | |
916 | case CS_EVENT_RESET_PHYSICAL: | |
917 | if (link->state & DEV_CONFIG) | |
918 | pcmcia_release_configuration(link->handle); | |
919 | break; | |
920 | case CS_EVENT_PM_RESUME: | |
921 | link->state &= ~DEV_SUSPEND; | |
922 | /* Fall through... */ | |
923 | case CS_EVENT_CARD_RESET: | |
924 | if (DEV_OK(link)) | |
925 | pcmcia_request_configuration(link->handle, &link->conf); | |
926 | break; | |
927 | } | |
928 | ||
929 | return 0; | |
930 | } | |
931 | ||
a01c3ed4 DB |
932 | static struct pcmcia_device_id bt3c_ids[] = { |
933 | PCMCIA_DEVICE_PROD_ID13("3COM", "Bluetooth PC Card", 0xefce0a31, 0xd4ce9b02), | |
934 | PCMCIA_DEVICE_NULL | |
935 | }; | |
936 | MODULE_DEVICE_TABLE(pcmcia, bt3c_ids); | |
937 | ||
1da177e4 LT |
938 | static struct pcmcia_driver bt3c_driver = { |
939 | .owner = THIS_MODULE, | |
940 | .drv = { | |
941 | .name = "bt3c_cs", | |
942 | }, | |
943 | .attach = bt3c_attach, | |
1e212f36 | 944 | .event = bt3c_event, |
1da177e4 | 945 | .detach = bt3c_detach, |
a01c3ed4 | 946 | .id_table = bt3c_ids, |
1da177e4 LT |
947 | }; |
948 | ||
949 | static int __init init_bt3c_cs(void) | |
950 | { | |
951 | return pcmcia_register_driver(&bt3c_driver); | |
952 | } | |
953 | ||
954 | ||
955 | static void __exit exit_bt3c_cs(void) | |
956 | { | |
957 | pcmcia_unregister_driver(&bt3c_driver); | |
958 | BUG_ON(dev_list != NULL); | |
959 | } | |
960 | ||
961 | module_init(init_bt3c_cs); | |
962 | module_exit(exit_bt3c_cs); |