Root/
1 | /* |
2 | * |
3 | * Bluetooth driver for the Anycom BlueCard (LSE039/LSE041) |
4 | * |
5 | * Copyright (C) 2001-2002 Marcel Holtmann <marcel@holtmann.org> |
6 | * |
7 | * |
8 | * This program is free software; you can redistribute it and/or modify |
9 | * it under the terms of the GNU General Public License version 2 as |
10 | * published by the Free Software Foundation; |
11 | * |
12 | * Software distributed under the License is distributed on an "AS |
13 | * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or |
14 | * implied. See the License for the specific language governing |
15 | * rights and limitations under the License. |
16 | * |
17 | * The initial developer of the original code is David A. Hinds |
18 | * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds |
19 | * are Copyright (C) 1999 David A. Hinds. All Rights Reserved. |
20 | * |
21 | */ |
22 | |
23 | #include <linux/module.h> |
24 | |
25 | #include <linux/kernel.h> |
26 | #include <linux/init.h> |
27 | #include <linux/slab.h> |
28 | #include <linux/types.h> |
29 | #include <linux/sched.h> |
30 | #include <linux/delay.h> |
31 | #include <linux/timer.h> |
32 | #include <linux/errno.h> |
33 | #include <linux/ptrace.h> |
34 | #include <linux/ioport.h> |
35 | #include <linux/spinlock.h> |
36 | #include <linux/moduleparam.h> |
37 | #include <linux/wait.h> |
38 | |
39 | #include <linux/skbuff.h> |
40 | #include <asm/io.h> |
41 | |
42 | #include <pcmcia/cs_types.h> |
43 | #include <pcmcia/cs.h> |
44 | #include <pcmcia/cistpl.h> |
45 | #include <pcmcia/ciscode.h> |
46 | #include <pcmcia/ds.h> |
47 | #include <pcmcia/cisreg.h> |
48 | |
49 | #include <net/bluetooth/bluetooth.h> |
50 | #include <net/bluetooth/hci_core.h> |
51 | |
52 | |
53 | |
54 | /* ======================== Module parameters ======================== */ |
55 | |
56 | |
57 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); |
58 | MODULE_DESCRIPTION("Bluetooth driver for the Anycom BlueCard (LSE039/LSE041)"); |
59 | MODULE_LICENSE("GPL"); |
60 | |
61 | |
62 | |
63 | /* ======================== Local structures ======================== */ |
64 | |
65 | |
66 | typedef struct bluecard_info_t { |
67 | struct pcmcia_device *p_dev; |
68 | dev_node_t node; |
69 | |
70 | struct hci_dev *hdev; |
71 | |
72 | spinlock_t lock; /* For serializing operations */ |
73 | struct timer_list timer; /* For LED control */ |
74 | |
75 | struct sk_buff_head txq; |
76 | unsigned long tx_state; |
77 | |
78 | unsigned long rx_state; |
79 | unsigned long rx_count; |
80 | struct sk_buff *rx_skb; |
81 | |
82 | unsigned char ctrl_reg; |
83 | unsigned long hw_state; /* Status of the hardware and LED control */ |
84 | } bluecard_info_t; |
85 | |
86 | |
87 | static int bluecard_config(struct pcmcia_device *link); |
88 | static void bluecard_release(struct pcmcia_device *link); |
89 | |
90 | static void bluecard_detach(struct pcmcia_device *p_dev); |
91 | |
92 | |
93 | /* Default baud rate: 57600, 115200, 230400 or 460800 */ |
94 | #define DEFAULT_BAUD_RATE 230400 |
95 | |
96 | |
97 | /* Hardware states */ |
98 | #define CARD_READY 1 |
99 | #define CARD_HAS_PCCARD_ID 4 |
100 | #define CARD_HAS_POWER_LED 5 |
101 | #define CARD_HAS_ACTIVITY_LED 6 |
102 | |
103 | /* Transmit states */ |
104 | #define XMIT_SENDING 1 |
105 | #define XMIT_WAKEUP 2 |
106 | #define XMIT_BUFFER_NUMBER 5 /* unset = buffer one, set = buffer two */ |
107 | #define XMIT_BUF_ONE_READY 6 |
108 | #define XMIT_BUF_TWO_READY 7 |
109 | #define XMIT_SENDING_READY 8 |
110 | |
111 | /* Receiver states */ |
112 | #define RECV_WAIT_PACKET_TYPE 0 |
113 | #define RECV_WAIT_EVENT_HEADER 1 |
114 | #define RECV_WAIT_ACL_HEADER 2 |
115 | #define RECV_WAIT_SCO_HEADER 3 |
116 | #define RECV_WAIT_DATA 4 |
117 | |
118 | /* Special packet types */ |
119 | #define PKT_BAUD_RATE_57600 0x80 |
120 | #define PKT_BAUD_RATE_115200 0x81 |
121 | #define PKT_BAUD_RATE_230400 0x82 |
122 | #define PKT_BAUD_RATE_460800 0x83 |
123 | |
124 | |
125 | /* These are the register offsets */ |
126 | #define REG_COMMAND 0x20 |
127 | #define REG_INTERRUPT 0x21 |
128 | #define REG_CONTROL 0x22 |
129 | #define REG_RX_CONTROL 0x24 |
130 | #define REG_CARD_RESET 0x30 |
131 | #define REG_LED_CTRL 0x30 |
132 | |
133 | /* REG_COMMAND */ |
134 | #define REG_COMMAND_TX_BUF_ONE 0x01 |
135 | #define REG_COMMAND_TX_BUF_TWO 0x02 |
136 | #define REG_COMMAND_RX_BUF_ONE 0x04 |
137 | #define REG_COMMAND_RX_BUF_TWO 0x08 |
138 | #define REG_COMMAND_RX_WIN_ONE 0x00 |
139 | #define REG_COMMAND_RX_WIN_TWO 0x10 |
140 | |
141 | /* REG_CONTROL */ |
142 | #define REG_CONTROL_BAUD_RATE_57600 0x00 |
143 | #define REG_CONTROL_BAUD_RATE_115200 0x01 |
144 | #define REG_CONTROL_BAUD_RATE_230400 0x02 |
145 | #define REG_CONTROL_BAUD_RATE_460800 0x03 |
146 | #define REG_CONTROL_RTS 0x04 |
147 | #define REG_CONTROL_BT_ON 0x08 |
148 | #define REG_CONTROL_BT_RESET 0x10 |
149 | #define REG_CONTROL_BT_RES_PU 0x20 |
150 | #define REG_CONTROL_INTERRUPT 0x40 |
151 | #define REG_CONTROL_CARD_RESET 0x80 |
152 | |
153 | /* REG_RX_CONTROL */ |
154 | #define RTS_LEVEL_SHIFT_BITS 0x02 |
155 | |
156 | |
157 | |
158 | /* ======================== LED handling routines ======================== */ |
159 | |
160 | |
161 | static void bluecard_activity_led_timeout(u_long arg) |
162 | { |
163 | bluecard_info_t *info = (bluecard_info_t *)arg; |
164 | unsigned int iobase = info->p_dev->io.BasePort1; |
165 | |
166 | if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) |
167 | return; |
168 | |
169 | if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) { |
170 | /* Disable activity LED */ |
171 | outb(0x08 | 0x20, iobase + 0x30); |
172 | } else { |
173 | /* Disable power LED */ |
174 | outb(0x00, iobase + 0x30); |
175 | } |
176 | } |
177 | |
178 | |
179 | static void bluecard_enable_activity_led(bluecard_info_t *info) |
180 | { |
181 | unsigned int iobase = info->p_dev->io.BasePort1; |
182 | |
183 | if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) |
184 | return; |
185 | |
186 | if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) { |
187 | /* Enable activity LED */ |
188 | outb(0x10 | 0x40, iobase + 0x30); |
189 | |
190 | /* Stop the LED after HZ/4 */ |
191 | mod_timer(&(info->timer), jiffies + HZ / 4); |
192 | } else { |
193 | /* Enable power LED */ |
194 | outb(0x08 | 0x20, iobase + 0x30); |
195 | |
196 | /* Stop the LED after HZ/2 */ |
197 | mod_timer(&(info->timer), jiffies + HZ / 2); |
198 | } |
199 | } |
200 | |
201 | |
202 | |
203 | /* ======================== Interrupt handling ======================== */ |
204 | |
205 | |
206 | static int bluecard_write(unsigned int iobase, unsigned int offset, __u8 *buf, int len) |
207 | { |
208 | int i, actual; |
209 | |
210 | actual = (len > 15) ? 15 : len; |
211 | |
212 | outb_p(actual, iobase + offset); |
213 | |
214 | for (i = 0; i < actual; i++) |
215 | outb_p(buf[i], iobase + offset + i + 1); |
216 | |
217 | return actual; |
218 | } |
219 | |
220 | |
221 | static void bluecard_write_wakeup(bluecard_info_t *info) |
222 | { |
223 | if (!info) { |
224 | BT_ERR("Unknown device"); |
225 | return; |
226 | } |
227 | |
228 | if (!test_bit(XMIT_SENDING_READY, &(info->tx_state))) |
229 | return; |
230 | |
231 | if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) { |
232 | set_bit(XMIT_WAKEUP, &(info->tx_state)); |
233 | return; |
234 | } |
235 | |
236 | do { |
237 | register unsigned int iobase = info->p_dev->io.BasePort1; |
238 | register unsigned int offset; |
239 | register unsigned char command; |
240 | register unsigned long ready_bit; |
241 | register struct sk_buff *skb; |
242 | register int len; |
243 | |
244 | clear_bit(XMIT_WAKEUP, &(info->tx_state)); |
245 | |
246 | if (!pcmcia_dev_present(info->p_dev)) |
247 | return; |
248 | |
249 | if (test_bit(XMIT_BUFFER_NUMBER, &(info->tx_state))) { |
250 | if (!test_bit(XMIT_BUF_TWO_READY, &(info->tx_state))) |
251 | break; |
252 | offset = 0x10; |
253 | command = REG_COMMAND_TX_BUF_TWO; |
254 | ready_bit = XMIT_BUF_TWO_READY; |
255 | } else { |
256 | if (!test_bit(XMIT_BUF_ONE_READY, &(info->tx_state))) |
257 | break; |
258 | offset = 0x00; |
259 | command = REG_COMMAND_TX_BUF_ONE; |
260 | ready_bit = XMIT_BUF_ONE_READY; |
261 | } |
262 | |
263 | if (!(skb = skb_dequeue(&(info->txq)))) |
264 | break; |
265 | |
266 | if (bt_cb(skb)->pkt_type & 0x80) { |
267 | /* Disable RTS */ |
268 | info->ctrl_reg |= REG_CONTROL_RTS; |
269 | outb(info->ctrl_reg, iobase + REG_CONTROL); |
270 | } |
271 | |
272 | /* Activate LED */ |
273 | bluecard_enable_activity_led(info); |
274 | |
275 | /* Send frame */ |
276 | len = bluecard_write(iobase, offset, skb->data, skb->len); |
277 | |
278 | /* Tell the FPGA to send the data */ |
279 | outb_p(command, iobase + REG_COMMAND); |
280 | |
281 | /* Mark the buffer as dirty */ |
282 | clear_bit(ready_bit, &(info->tx_state)); |
283 | |
284 | if (bt_cb(skb)->pkt_type & 0x80) { |
285 | DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq); |
286 | DEFINE_WAIT(wait); |
287 | |
288 | unsigned char baud_reg; |
289 | |
290 | switch (bt_cb(skb)->pkt_type) { |
291 | case PKT_BAUD_RATE_460800: |
292 | baud_reg = REG_CONTROL_BAUD_RATE_460800; |
293 | break; |
294 | case PKT_BAUD_RATE_230400: |
295 | baud_reg = REG_CONTROL_BAUD_RATE_230400; |
296 | break; |
297 | case PKT_BAUD_RATE_115200: |
298 | baud_reg = REG_CONTROL_BAUD_RATE_115200; |
299 | break; |
300 | case PKT_BAUD_RATE_57600: |
301 | /* Fall through... */ |
302 | default: |
303 | baud_reg = REG_CONTROL_BAUD_RATE_57600; |
304 | break; |
305 | } |
306 | |
307 | /* Wait until the command reaches the baseband */ |
308 | prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE); |
309 | schedule_timeout(HZ/10); |
310 | finish_wait(&wq, &wait); |
311 | |
312 | /* Set baud on baseband */ |
313 | info->ctrl_reg &= ~0x03; |
314 | info->ctrl_reg |= baud_reg; |
315 | outb(info->ctrl_reg, iobase + REG_CONTROL); |
316 | |
317 | /* Enable RTS */ |
318 | info->ctrl_reg &= ~REG_CONTROL_RTS; |
319 | outb(info->ctrl_reg, iobase + REG_CONTROL); |
320 | |
321 | /* Wait before the next HCI packet can be send */ |
322 | prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE); |
323 | schedule_timeout(HZ); |
324 | finish_wait(&wq, &wait); |
325 | } |
326 | |
327 | if (len == skb->len) { |
328 | kfree_skb(skb); |
329 | } else { |
330 | skb_pull(skb, len); |
331 | skb_queue_head(&(info->txq), skb); |
332 | } |
333 | |
334 | info->hdev->stat.byte_tx += len; |
335 | |
336 | /* Change buffer */ |
337 | change_bit(XMIT_BUFFER_NUMBER, &(info->tx_state)); |
338 | |
339 | } while (test_bit(XMIT_WAKEUP, &(info->tx_state))); |
340 | |
341 | clear_bit(XMIT_SENDING, &(info->tx_state)); |
342 | } |
343 | |
344 | |
345 | static int bluecard_read(unsigned int iobase, unsigned int offset, __u8 *buf, int size) |
346 | { |
347 | int i, n, len; |
348 | |
349 | outb(REG_COMMAND_RX_WIN_ONE, iobase + REG_COMMAND); |
350 | |
351 | len = inb(iobase + offset); |
352 | n = 0; |
353 | i = 1; |
354 | |
355 | while (n < len) { |
356 | |
357 | if (i == 16) { |
358 | outb(REG_COMMAND_RX_WIN_TWO, iobase + REG_COMMAND); |
359 | i = 0; |
360 | } |
361 | |
362 | buf[n] = inb(iobase + offset + i); |
363 | |
364 | n++; |
365 | i++; |
366 | |
367 | } |
368 | |
369 | return len; |
370 | } |
371 | |
372 | |
373 | static void bluecard_receive(bluecard_info_t *info, unsigned int offset) |
374 | { |
375 | unsigned int iobase; |
376 | unsigned char buf[31]; |
377 | int i, len; |
378 | |
379 | if (!info) { |
380 | BT_ERR("Unknown device"); |
381 | return; |
382 | } |
383 | |
384 | iobase = info->p_dev->io.BasePort1; |
385 | |
386 | if (test_bit(XMIT_SENDING_READY, &(info->tx_state))) |
387 | bluecard_enable_activity_led(info); |
388 | |
389 | len = bluecard_read(iobase, offset, buf, sizeof(buf)); |
390 | |
391 | for (i = 0; i < len; i++) { |
392 | |
393 | /* Allocate packet */ |
394 | if (info->rx_skb == NULL) { |
395 | info->rx_state = RECV_WAIT_PACKET_TYPE; |
396 | info->rx_count = 0; |
397 | if (!(info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) { |
398 | BT_ERR("Can't allocate mem for new packet"); |
399 | return; |
400 | } |
401 | } |
402 | |
403 | if (info->rx_state == RECV_WAIT_PACKET_TYPE) { |
404 | |
405 | info->rx_skb->dev = (void *) info->hdev; |
406 | bt_cb(info->rx_skb)->pkt_type = buf[i]; |
407 | |
408 | switch (bt_cb(info->rx_skb)->pkt_type) { |
409 | |
410 | case 0x00: |
411 | /* init packet */ |
412 | if (offset != 0x00) { |
413 | set_bit(XMIT_BUF_ONE_READY, &(info->tx_state)); |
414 | set_bit(XMIT_BUF_TWO_READY, &(info->tx_state)); |
415 | set_bit(XMIT_SENDING_READY, &(info->tx_state)); |
416 | bluecard_write_wakeup(info); |
417 | } |
418 | |
419 | kfree_skb(info->rx_skb); |
420 | info->rx_skb = NULL; |
421 | break; |
422 | |
423 | case HCI_EVENT_PKT: |
424 | info->rx_state = RECV_WAIT_EVENT_HEADER; |
425 | info->rx_count = HCI_EVENT_HDR_SIZE; |
426 | break; |
427 | |
428 | case HCI_ACLDATA_PKT: |
429 | info->rx_state = RECV_WAIT_ACL_HEADER; |
430 | info->rx_count = HCI_ACL_HDR_SIZE; |
431 | break; |
432 | |
433 | case HCI_SCODATA_PKT: |
434 | info->rx_state = RECV_WAIT_SCO_HEADER; |
435 | info->rx_count = HCI_SCO_HDR_SIZE; |
436 | break; |
437 | |
438 | default: |
439 | /* unknown packet */ |
440 | BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type); |
441 | info->hdev->stat.err_rx++; |
442 | |
443 | kfree_skb(info->rx_skb); |
444 | info->rx_skb = NULL; |
445 | break; |
446 | |
447 | } |
448 | |
449 | } else { |
450 | |
451 | *skb_put(info->rx_skb, 1) = buf[i]; |
452 | info->rx_count--; |
453 | |
454 | if (info->rx_count == 0) { |
455 | |
456 | int dlen; |
457 | struct hci_event_hdr *eh; |
458 | struct hci_acl_hdr *ah; |
459 | struct hci_sco_hdr *sh; |
460 | |
461 | switch (info->rx_state) { |
462 | |
463 | case RECV_WAIT_EVENT_HEADER: |
464 | eh = hci_event_hdr(info->rx_skb); |
465 | info->rx_state = RECV_WAIT_DATA; |
466 | info->rx_count = eh->plen; |
467 | break; |
468 | |
469 | case RECV_WAIT_ACL_HEADER: |
470 | ah = hci_acl_hdr(info->rx_skb); |
471 | dlen = __le16_to_cpu(ah->dlen); |
472 | info->rx_state = RECV_WAIT_DATA; |
473 | info->rx_count = dlen; |
474 | break; |
475 | |
476 | case RECV_WAIT_SCO_HEADER: |
477 | sh = hci_sco_hdr(info->rx_skb); |
478 | info->rx_state = RECV_WAIT_DATA; |
479 | info->rx_count = sh->dlen; |
480 | break; |
481 | |
482 | case RECV_WAIT_DATA: |
483 | hci_recv_frame(info->rx_skb); |
484 | info->rx_skb = NULL; |
485 | break; |
486 | |
487 | } |
488 | |
489 | } |
490 | |
491 | } |
492 | |
493 | |
494 | } |
495 | |
496 | info->hdev->stat.byte_rx += len; |
497 | } |
498 | |
499 | |
500 | static irqreturn_t bluecard_interrupt(int irq, void *dev_inst) |
501 | { |
502 | bluecard_info_t *info = dev_inst; |
503 | unsigned int iobase; |
504 | unsigned char reg; |
505 | |
506 | if (!info || !info->hdev) |
507 | /* our irq handler is shared */ |
508 | return IRQ_NONE; |
509 | |
510 | if (!test_bit(CARD_READY, &(info->hw_state))) |
511 | return IRQ_HANDLED; |
512 | |
513 | iobase = info->p_dev->io.BasePort1; |
514 | |
515 | spin_lock(&(info->lock)); |
516 | |
517 | /* Disable interrupt */ |
518 | info->ctrl_reg &= ~REG_CONTROL_INTERRUPT; |
519 | outb(info->ctrl_reg, iobase + REG_CONTROL); |
520 | |
521 | reg = inb(iobase + REG_INTERRUPT); |
522 | |
523 | if ((reg != 0x00) && (reg != 0xff)) { |
524 | |
525 | if (reg & 0x04) { |
526 | bluecard_receive(info, 0x00); |
527 | outb(0x04, iobase + REG_INTERRUPT); |
528 | outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND); |
529 | } |
530 | |
531 | if (reg & 0x08) { |
532 | bluecard_receive(info, 0x10); |
533 | outb(0x08, iobase + REG_INTERRUPT); |
534 | outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND); |
535 | } |
536 | |
537 | if (reg & 0x01) { |
538 | set_bit(XMIT_BUF_ONE_READY, &(info->tx_state)); |
539 | outb(0x01, iobase + REG_INTERRUPT); |
540 | bluecard_write_wakeup(info); |
541 | } |
542 | |
543 | if (reg & 0x02) { |
544 | set_bit(XMIT_BUF_TWO_READY, &(info->tx_state)); |
545 | outb(0x02, iobase + REG_INTERRUPT); |
546 | bluecard_write_wakeup(info); |
547 | } |
548 | |
549 | } |
550 | |
551 | /* Enable interrupt */ |
552 | info->ctrl_reg |= REG_CONTROL_INTERRUPT; |
553 | outb(info->ctrl_reg, iobase + REG_CONTROL); |
554 | |
555 | spin_unlock(&(info->lock)); |
556 | |
557 | return IRQ_HANDLED; |
558 | } |
559 | |
560 | |
561 | |
562 | /* ======================== Device specific HCI commands ======================== */ |
563 | |
564 | |
565 | static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud) |
566 | { |
567 | bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data); |
568 | struct sk_buff *skb; |
569 | |
570 | /* Ericsson baud rate command */ |
571 | unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 }; |
572 | |
573 | if (!(skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) { |
574 | BT_ERR("Can't allocate mem for new packet"); |
575 | return -1; |
576 | } |
577 | |
578 | switch (baud) { |
579 | case 460800: |
580 | cmd[4] = 0x00; |
581 | bt_cb(skb)->pkt_type = PKT_BAUD_RATE_460800; |
582 | break; |
583 | case 230400: |
584 | cmd[4] = 0x01; |
585 | bt_cb(skb)->pkt_type = PKT_BAUD_RATE_230400; |
586 | break; |
587 | case 115200: |
588 | cmd[4] = 0x02; |
589 | bt_cb(skb)->pkt_type = PKT_BAUD_RATE_115200; |
590 | break; |
591 | case 57600: |
592 | /* Fall through... */ |
593 | default: |
594 | cmd[4] = 0x03; |
595 | bt_cb(skb)->pkt_type = PKT_BAUD_RATE_57600; |
596 | break; |
597 | } |
598 | |
599 | memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd)); |
600 | |
601 | skb_queue_tail(&(info->txq), skb); |
602 | |
603 | bluecard_write_wakeup(info); |
604 | |
605 | return 0; |
606 | } |
607 | |
608 | |
609 | |
610 | /* ======================== HCI interface ======================== */ |
611 | |
612 | |
613 | static int bluecard_hci_flush(struct hci_dev *hdev) |
614 | { |
615 | bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data); |
616 | |
617 | /* Drop TX queue */ |
618 | skb_queue_purge(&(info->txq)); |
619 | |
620 | return 0; |
621 | } |
622 | |
623 | |
624 | static int bluecard_hci_open(struct hci_dev *hdev) |
625 | { |
626 | bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data); |
627 | unsigned int iobase = info->p_dev->io.BasePort1; |
628 | |
629 | if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) |
630 | bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE); |
631 | |
632 | if (test_and_set_bit(HCI_RUNNING, &(hdev->flags))) |
633 | return 0; |
634 | |
635 | if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) { |
636 | /* Enable LED */ |
637 | outb(0x08 | 0x20, iobase + 0x30); |
638 | } |
639 | |
640 | return 0; |
641 | } |
642 | |
643 | |
644 | static int bluecard_hci_close(struct hci_dev *hdev) |
645 | { |
646 | bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data); |
647 | unsigned int iobase = info->p_dev->io.BasePort1; |
648 | |
649 | if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags))) |
650 | return 0; |
651 | |
652 | bluecard_hci_flush(hdev); |
653 | |
654 | if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) { |
655 | /* Disable LED */ |
656 | outb(0x00, iobase + 0x30); |
657 | } |
658 | |
659 | return 0; |
660 | } |
661 | |
662 | |
663 | static int bluecard_hci_send_frame(struct sk_buff *skb) |
664 | { |
665 | bluecard_info_t *info; |
666 | struct hci_dev *hdev = (struct hci_dev *)(skb->dev); |
667 | |
668 | if (!hdev) { |
669 | BT_ERR("Frame for unknown HCI device (hdev=NULL)"); |
670 | return -ENODEV; |
671 | } |
672 | |
673 | info = (bluecard_info_t *)(hdev->driver_data); |
674 | |
675 | switch (bt_cb(skb)->pkt_type) { |
676 | case HCI_COMMAND_PKT: |
677 | hdev->stat.cmd_tx++; |
678 | break; |
679 | case HCI_ACLDATA_PKT: |
680 | hdev->stat.acl_tx++; |
681 | break; |
682 | case HCI_SCODATA_PKT: |
683 | hdev->stat.sco_tx++; |
684 | break; |
685 | }; |
686 | |
687 | /* Prepend skb with frame type */ |
688 | memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1); |
689 | skb_queue_tail(&(info->txq), skb); |
690 | |
691 | bluecard_write_wakeup(info); |
692 | |
693 | return 0; |
694 | } |
695 | |
696 | |
697 | static void bluecard_hci_destruct(struct hci_dev *hdev) |
698 | { |
699 | } |
700 | |
701 | |
702 | static int bluecard_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg) |
703 | { |
704 | return -ENOIOCTLCMD; |
705 | } |
706 | |
707 | |
708 | |
709 | /* ======================== Card services HCI interaction ======================== */ |
710 | |
711 | |
712 | static int bluecard_open(bluecard_info_t *info) |
713 | { |
714 | unsigned int iobase = info->p_dev->io.BasePort1; |
715 | struct hci_dev *hdev; |
716 | unsigned char id; |
717 | |
718 | spin_lock_init(&(info->lock)); |
719 | |
720 | init_timer(&(info->timer)); |
721 | info->timer.function = &bluecard_activity_led_timeout; |
722 | info->timer.data = (u_long)info; |
723 | |
724 | skb_queue_head_init(&(info->txq)); |
725 | |
726 | info->rx_state = RECV_WAIT_PACKET_TYPE; |
727 | info->rx_count = 0; |
728 | info->rx_skb = NULL; |
729 | |
730 | /* Initialize HCI device */ |
731 | hdev = hci_alloc_dev(); |
732 | if (!hdev) { |
733 | BT_ERR("Can't allocate HCI device"); |
734 | return -ENOMEM; |
735 | } |
736 | |
737 | info->hdev = hdev; |
738 | |
739 | hdev->bus = HCI_PCCARD; |
740 | hdev->driver_data = info; |
741 | SET_HCIDEV_DEV(hdev, &info->p_dev->dev); |
742 | |
743 | hdev->open = bluecard_hci_open; |
744 | hdev->close = bluecard_hci_close; |
745 | hdev->flush = bluecard_hci_flush; |
746 | hdev->send = bluecard_hci_send_frame; |
747 | hdev->destruct = bluecard_hci_destruct; |
748 | hdev->ioctl = bluecard_hci_ioctl; |
749 | |
750 | hdev->owner = THIS_MODULE; |
751 | |
752 | id = inb(iobase + 0x30); |
753 | |
754 | if ((id & 0x0f) == 0x02) |
755 | set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)); |
756 | |
757 | if (id & 0x10) |
758 | set_bit(CARD_HAS_POWER_LED, &(info->hw_state)); |
759 | |
760 | if (id & 0x20) |
761 | set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state)); |
762 | |
763 | /* Reset card */ |
764 | info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET; |
765 | outb(info->ctrl_reg, iobase + REG_CONTROL); |
766 | |
767 | /* Turn FPGA off */ |
768 | outb(0x80, iobase + 0x30); |
769 | |
770 | /* Wait some time */ |
771 | msleep(10); |
772 | |
773 | /* Turn FPGA on */ |
774 | outb(0x00, iobase + 0x30); |
775 | |
776 | /* Activate card */ |
777 | info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU; |
778 | outb(info->ctrl_reg, iobase + REG_CONTROL); |
779 | |
780 | /* Enable interrupt */ |
781 | outb(0xff, iobase + REG_INTERRUPT); |
782 | info->ctrl_reg |= REG_CONTROL_INTERRUPT; |
783 | outb(info->ctrl_reg, iobase + REG_CONTROL); |
784 | |
785 | if ((id & 0x0f) == 0x03) { |
786 | /* Disable RTS */ |
787 | info->ctrl_reg |= REG_CONTROL_RTS; |
788 | outb(info->ctrl_reg, iobase + REG_CONTROL); |
789 | |
790 | /* Set baud rate */ |
791 | info->ctrl_reg |= 0x03; |
792 | outb(info->ctrl_reg, iobase + REG_CONTROL); |
793 | |
794 | /* Enable RTS */ |
795 | info->ctrl_reg &= ~REG_CONTROL_RTS; |
796 | outb(info->ctrl_reg, iobase + REG_CONTROL); |
797 | |
798 | set_bit(XMIT_BUF_ONE_READY, &(info->tx_state)); |
799 | set_bit(XMIT_BUF_TWO_READY, &(info->tx_state)); |
800 | set_bit(XMIT_SENDING_READY, &(info->tx_state)); |
801 | } |
802 | |
803 | /* Start the RX buffers */ |
804 | outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND); |
805 | outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND); |
806 | |
807 | /* Signal that the hardware is ready */ |
808 | set_bit(CARD_READY, &(info->hw_state)); |
809 | |
810 | /* Drop TX queue */ |
811 | skb_queue_purge(&(info->txq)); |
812 | |
813 | /* Control the point at which RTS is enabled */ |
814 | outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL); |
815 | |
816 | /* Timeout before it is safe to send the first HCI packet */ |
817 | msleep(1250); |
818 | |
819 | /* Register HCI device */ |
820 | if (hci_register_dev(hdev) < 0) { |
821 | BT_ERR("Can't register HCI device"); |
822 | info->hdev = NULL; |
823 | hci_free_dev(hdev); |
824 | return -ENODEV; |
825 | } |
826 | |
827 | return 0; |
828 | } |
829 | |
830 | |
831 | static int bluecard_close(bluecard_info_t *info) |
832 | { |
833 | unsigned int iobase = info->p_dev->io.BasePort1; |
834 | struct hci_dev *hdev = info->hdev; |
835 | |
836 | if (!hdev) |
837 | return -ENODEV; |
838 | |
839 | bluecard_hci_close(hdev); |
840 | |
841 | clear_bit(CARD_READY, &(info->hw_state)); |
842 | |
843 | /* Reset card */ |
844 | info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET; |
845 | outb(info->ctrl_reg, iobase + REG_CONTROL); |
846 | |
847 | /* Turn FPGA off */ |
848 | outb(0x80, iobase + 0x30); |
849 | |
850 | if (hci_unregister_dev(hdev) < 0) |
851 | BT_ERR("Can't unregister HCI device %s", hdev->name); |
852 | |
853 | hci_free_dev(hdev); |
854 | |
855 | return 0; |
856 | } |
857 | |
858 | static int bluecard_probe(struct pcmcia_device *link) |
859 | { |
860 | bluecard_info_t *info; |
861 | |
862 | /* Create new info device */ |
863 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
864 | if (!info) |
865 | return -ENOMEM; |
866 | |
867 | info->p_dev = link; |
868 | link->priv = info; |
869 | |
870 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_8; |
871 | link->io.NumPorts1 = 8; |
872 | link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING; |
873 | |
874 | link->irq.Handler = bluecard_interrupt; |
875 | |
876 | link->conf.Attributes = CONF_ENABLE_IRQ; |
877 | link->conf.IntType = INT_MEMORY_AND_IO; |
878 | |
879 | return bluecard_config(link); |
880 | } |
881 | |
882 | |
883 | static void bluecard_detach(struct pcmcia_device *link) |
884 | { |
885 | bluecard_info_t *info = link->priv; |
886 | |
887 | bluecard_release(link); |
888 | kfree(info); |
889 | } |
890 | |
891 | |
892 | static int bluecard_config(struct pcmcia_device *link) |
893 | { |
894 | bluecard_info_t *info = link->priv; |
895 | int i, n; |
896 | |
897 | link->conf.ConfigIndex = 0x20; |
898 | link->io.NumPorts1 = 64; |
899 | link->io.IOAddrLines = 6; |
900 | |
901 | for (n = 0; n < 0x400; n += 0x40) { |
902 | link->io.BasePort1 = n ^ 0x300; |
903 | i = pcmcia_request_io(link, &link->io); |
904 | if (i == 0) |
905 | break; |
906 | } |
907 | |
908 | if (i != 0) |
909 | goto failed; |
910 | |
911 | i = pcmcia_request_irq(link, &link->irq); |
912 | if (i != 0) |
913 | link->irq.AssignedIRQ = 0; |
914 | |
915 | i = pcmcia_request_configuration(link, &link->conf); |
916 | if (i != 0) |
917 | goto failed; |
918 | |
919 | if (bluecard_open(info) != 0) |
920 | goto failed; |
921 | |
922 | strcpy(info->node.dev_name, info->hdev->name); |
923 | link->dev_node = &info->node; |
924 | |
925 | return 0; |
926 | |
927 | failed: |
928 | bluecard_release(link); |
929 | return -ENODEV; |
930 | } |
931 | |
932 | |
933 | static void bluecard_release(struct pcmcia_device *link) |
934 | { |
935 | bluecard_info_t *info = link->priv; |
936 | |
937 | bluecard_close(info); |
938 | |
939 | del_timer(&(info->timer)); |
940 | |
941 | pcmcia_disable_device(link); |
942 | } |
943 | |
944 | static struct pcmcia_device_id bluecard_ids[] = { |
945 | PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e), |
946 | PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c), |
947 | PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab), |
948 | PCMCIA_DEVICE_NULL |
949 | }; |
950 | MODULE_DEVICE_TABLE(pcmcia, bluecard_ids); |
951 | |
952 | static struct pcmcia_driver bluecard_driver = { |
953 | .owner = THIS_MODULE, |
954 | .drv = { |
955 | .name = "bluecard_cs", |
956 | }, |
957 | .probe = bluecard_probe, |
958 | .remove = bluecard_detach, |
959 | .id_table = bluecard_ids, |
960 | }; |
961 | |
962 | static int __init init_bluecard_cs(void) |
963 | { |
964 | return pcmcia_register_driver(&bluecard_driver); |
965 | } |
966 | |
967 | |
968 | static void __exit exit_bluecard_cs(void) |
969 | { |
970 | pcmcia_unregister_driver(&bluecard_driver); |
971 | } |
972 | |
973 | module_init(init_bluecard_cs); |
974 | module_exit(exit_bluecard_cs); |
975 |
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