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1da177e4 LT |
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 | ||
1da177e4 LT |
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> | |
c89827e0 | 40 | #include <linux/io.h> |
1da177e4 | 41 | |
1da177e4 LT |
42 | #include <pcmcia/cistpl.h> |
43 | #include <pcmcia/ciscode.h> | |
44 | #include <pcmcia/ds.h> | |
45 | #include <pcmcia/cisreg.h> | |
46 | ||
47 | #include <net/bluetooth/bluetooth.h> | |
48 | #include <net/bluetooth/hci_core.h> | |
49 | ||
50 | ||
51 | ||
52 | /* ======================== Module parameters ======================== */ | |
53 | ||
54 | ||
55 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); | |
56 | MODULE_DESCRIPTION("Bluetooth driver for the Anycom BlueCard (LSE039/LSE041)"); | |
57 | MODULE_LICENSE("GPL"); | |
58 | ||
59 | ||
60 | ||
61 | /* ======================== Local structures ======================== */ | |
62 | ||
63 | ||
64 | typedef struct bluecard_info_t { | |
fd238232 | 65 | struct pcmcia_device *p_dev; |
1da177e4 LT |
66 | |
67 | struct hci_dev *hdev; | |
68 | ||
69 | spinlock_t lock; /* For serializing operations */ | |
70 | struct timer_list timer; /* For LED control */ | |
71 | ||
72 | struct sk_buff_head txq; | |
73 | unsigned long tx_state; | |
74 | ||
75 | unsigned long rx_state; | |
76 | unsigned long rx_count; | |
77 | struct sk_buff *rx_skb; | |
78 | ||
79 | unsigned char ctrl_reg; | |
80 | unsigned long hw_state; /* Status of the hardware and LED control */ | |
81 | } bluecard_info_t; | |
82 | ||
83 | ||
15b99ac1 | 84 | static int bluecard_config(struct pcmcia_device *link); |
fba395ee | 85 | static void bluecard_release(struct pcmcia_device *link); |
1da177e4 | 86 | |
cc3b4866 | 87 | static void bluecard_detach(struct pcmcia_device *p_dev); |
1da177e4 | 88 | |
1da177e4 LT |
89 | |
90 | /* Default baud rate: 57600, 115200, 230400 or 460800 */ | |
91 | #define DEFAULT_BAUD_RATE 230400 | |
92 | ||
93 | ||
94 | /* Hardware states */ | |
95 | #define CARD_READY 1 | |
96 | #define CARD_HAS_PCCARD_ID 4 | |
97 | #define CARD_HAS_POWER_LED 5 | |
98 | #define CARD_HAS_ACTIVITY_LED 6 | |
99 | ||
100 | /* Transmit states */ | |
101 | #define XMIT_SENDING 1 | |
102 | #define XMIT_WAKEUP 2 | |
103 | #define XMIT_BUFFER_NUMBER 5 /* unset = buffer one, set = buffer two */ | |
104 | #define XMIT_BUF_ONE_READY 6 | |
105 | #define XMIT_BUF_TWO_READY 7 | |
106 | #define XMIT_SENDING_READY 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 | /* Special packet types */ | |
116 | #define PKT_BAUD_RATE_57600 0x80 | |
117 | #define PKT_BAUD_RATE_115200 0x81 | |
118 | #define PKT_BAUD_RATE_230400 0x82 | |
119 | #define PKT_BAUD_RATE_460800 0x83 | |
120 | ||
121 | ||
122 | /* These are the register offsets */ | |
123 | #define REG_COMMAND 0x20 | |
124 | #define REG_INTERRUPT 0x21 | |
125 | #define REG_CONTROL 0x22 | |
126 | #define REG_RX_CONTROL 0x24 | |
127 | #define REG_CARD_RESET 0x30 | |
128 | #define REG_LED_CTRL 0x30 | |
129 | ||
130 | /* REG_COMMAND */ | |
131 | #define REG_COMMAND_TX_BUF_ONE 0x01 | |
132 | #define REG_COMMAND_TX_BUF_TWO 0x02 | |
133 | #define REG_COMMAND_RX_BUF_ONE 0x04 | |
134 | #define REG_COMMAND_RX_BUF_TWO 0x08 | |
135 | #define REG_COMMAND_RX_WIN_ONE 0x00 | |
136 | #define REG_COMMAND_RX_WIN_TWO 0x10 | |
137 | ||
138 | /* REG_CONTROL */ | |
139 | #define REG_CONTROL_BAUD_RATE_57600 0x00 | |
140 | #define REG_CONTROL_BAUD_RATE_115200 0x01 | |
141 | #define REG_CONTROL_BAUD_RATE_230400 0x02 | |
142 | #define REG_CONTROL_BAUD_RATE_460800 0x03 | |
143 | #define REG_CONTROL_RTS 0x04 | |
144 | #define REG_CONTROL_BT_ON 0x08 | |
145 | #define REG_CONTROL_BT_RESET 0x10 | |
146 | #define REG_CONTROL_BT_RES_PU 0x20 | |
147 | #define REG_CONTROL_INTERRUPT 0x40 | |
148 | #define REG_CONTROL_CARD_RESET 0x80 | |
149 | ||
150 | /* REG_RX_CONTROL */ | |
151 | #define RTS_LEVEL_SHIFT_BITS 0x02 | |
152 | ||
153 | ||
154 | ||
155 | /* ======================== LED handling routines ======================== */ | |
156 | ||
157 | ||
158 | static void bluecard_activity_led_timeout(u_long arg) | |
159 | { | |
160 | bluecard_info_t *info = (bluecard_info_t *)arg; | |
9a017a91 | 161 | unsigned int iobase = info->p_dev->resource[0]->start; |
1da177e4 LT |
162 | |
163 | if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) | |
164 | return; | |
165 | ||
166 | if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) { | |
167 | /* Disable activity LED */ | |
168 | outb(0x08 | 0x20, iobase + 0x30); | |
169 | } else { | |
170 | /* Disable power LED */ | |
171 | outb(0x00, iobase + 0x30); | |
172 | } | |
173 | } | |
174 | ||
175 | ||
176 | static void bluecard_enable_activity_led(bluecard_info_t *info) | |
177 | { | |
9a017a91 | 178 | unsigned int iobase = info->p_dev->resource[0]->start; |
1da177e4 LT |
179 | |
180 | if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) | |
181 | return; | |
182 | ||
183 | if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) { | |
184 | /* Enable activity LED */ | |
185 | outb(0x10 | 0x40, iobase + 0x30); | |
186 | ||
187 | /* Stop the LED after HZ/4 */ | |
188 | mod_timer(&(info->timer), jiffies + HZ / 4); | |
189 | } else { | |
190 | /* Enable power LED */ | |
191 | outb(0x08 | 0x20, iobase + 0x30); | |
192 | ||
193 | /* Stop the LED after HZ/2 */ | |
194 | mod_timer(&(info->timer), jiffies + HZ / 2); | |
195 | } | |
196 | } | |
197 | ||
198 | ||
199 | ||
200 | /* ======================== Interrupt handling ======================== */ | |
201 | ||
202 | ||
203 | static int bluecard_write(unsigned int iobase, unsigned int offset, __u8 *buf, int len) | |
204 | { | |
205 | int i, actual; | |
206 | ||
207 | actual = (len > 15) ? 15 : len; | |
208 | ||
209 | outb_p(actual, iobase + offset); | |
210 | ||
211 | for (i = 0; i < actual; i++) | |
212 | outb_p(buf[i], iobase + offset + i + 1); | |
213 | ||
214 | return actual; | |
215 | } | |
216 | ||
217 | ||
218 | static void bluecard_write_wakeup(bluecard_info_t *info) | |
219 | { | |
220 | if (!info) { | |
221 | BT_ERR("Unknown device"); | |
222 | return; | |
223 | } | |
224 | ||
225 | if (!test_bit(XMIT_SENDING_READY, &(info->tx_state))) | |
226 | return; | |
227 | ||
228 | if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) { | |
229 | set_bit(XMIT_WAKEUP, &(info->tx_state)); | |
230 | return; | |
231 | } | |
232 | ||
233 | do { | |
9a017a91 | 234 | register unsigned int iobase = info->p_dev->resource[0]->start; |
1da177e4 LT |
235 | register unsigned int offset; |
236 | register unsigned char command; | |
237 | register unsigned long ready_bit; | |
238 | register struct sk_buff *skb; | |
239 | register int len; | |
240 | ||
241 | clear_bit(XMIT_WAKEUP, &(info->tx_state)); | |
242 | ||
e2d40963 | 243 | if (!pcmcia_dev_present(info->p_dev)) |
1da177e4 LT |
244 | return; |
245 | ||
246 | if (test_bit(XMIT_BUFFER_NUMBER, &(info->tx_state))) { | |
247 | if (!test_bit(XMIT_BUF_TWO_READY, &(info->tx_state))) | |
248 | break; | |
249 | offset = 0x10; | |
250 | command = REG_COMMAND_TX_BUF_TWO; | |
251 | ready_bit = XMIT_BUF_TWO_READY; | |
252 | } else { | |
253 | if (!test_bit(XMIT_BUF_ONE_READY, &(info->tx_state))) | |
254 | break; | |
255 | offset = 0x00; | |
256 | command = REG_COMMAND_TX_BUF_ONE; | |
257 | ready_bit = XMIT_BUF_ONE_READY; | |
258 | } | |
259 | ||
260 | if (!(skb = skb_dequeue(&(info->txq)))) | |
261 | break; | |
262 | ||
0d48d939 | 263 | if (bt_cb(skb)->pkt_type & 0x80) { |
1da177e4 LT |
264 | /* Disable RTS */ |
265 | info->ctrl_reg |= REG_CONTROL_RTS; | |
266 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
267 | } | |
268 | ||
269 | /* Activate LED */ | |
270 | bluecard_enable_activity_led(info); | |
271 | ||
272 | /* Send frame */ | |
273 | len = bluecard_write(iobase, offset, skb->data, skb->len); | |
274 | ||
275 | /* Tell the FPGA to send the data */ | |
276 | outb_p(command, iobase + REG_COMMAND); | |
277 | ||
278 | /* Mark the buffer as dirty */ | |
279 | clear_bit(ready_bit, &(info->tx_state)); | |
280 | ||
0d48d939 | 281 | if (bt_cb(skb)->pkt_type & 0x80) { |
7259f0d0 | 282 | DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq); |
1da177e4 LT |
283 | DEFINE_WAIT(wait); |
284 | ||
285 | unsigned char baud_reg; | |
286 | ||
0d48d939 | 287 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
288 | case PKT_BAUD_RATE_460800: |
289 | baud_reg = REG_CONTROL_BAUD_RATE_460800; | |
290 | break; | |
291 | case PKT_BAUD_RATE_230400: | |
292 | baud_reg = REG_CONTROL_BAUD_RATE_230400; | |
293 | break; | |
294 | case PKT_BAUD_RATE_115200: | |
295 | baud_reg = REG_CONTROL_BAUD_RATE_115200; | |
296 | break; | |
297 | case PKT_BAUD_RATE_57600: | |
298 | /* Fall through... */ | |
299 | default: | |
300 | baud_reg = REG_CONTROL_BAUD_RATE_57600; | |
301 | break; | |
302 | } | |
303 | ||
304 | /* Wait until the command reaches the baseband */ | |
305 | prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE); | |
306 | schedule_timeout(HZ/10); | |
307 | finish_wait(&wq, &wait); | |
308 | ||
309 | /* Set baud on baseband */ | |
310 | info->ctrl_reg &= ~0x03; | |
311 | info->ctrl_reg |= baud_reg; | |
312 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
313 | ||
314 | /* Enable RTS */ | |
315 | info->ctrl_reg &= ~REG_CONTROL_RTS; | |
316 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
317 | ||
318 | /* Wait before the next HCI packet can be send */ | |
319 | prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE); | |
320 | schedule_timeout(HZ); | |
321 | finish_wait(&wq, &wait); | |
322 | } | |
323 | ||
324 | if (len == skb->len) { | |
325 | kfree_skb(skb); | |
326 | } else { | |
327 | skb_pull(skb, len); | |
328 | skb_queue_head(&(info->txq), skb); | |
329 | } | |
330 | ||
331 | info->hdev->stat.byte_tx += len; | |
332 | ||
333 | /* Change buffer */ | |
334 | change_bit(XMIT_BUFFER_NUMBER, &(info->tx_state)); | |
335 | ||
336 | } while (test_bit(XMIT_WAKEUP, &(info->tx_state))); | |
337 | ||
338 | clear_bit(XMIT_SENDING, &(info->tx_state)); | |
339 | } | |
340 | ||
341 | ||
342 | static int bluecard_read(unsigned int iobase, unsigned int offset, __u8 *buf, int size) | |
343 | { | |
344 | int i, n, len; | |
345 | ||
346 | outb(REG_COMMAND_RX_WIN_ONE, iobase + REG_COMMAND); | |
347 | ||
348 | len = inb(iobase + offset); | |
349 | n = 0; | |
350 | i = 1; | |
351 | ||
352 | while (n < len) { | |
353 | ||
354 | if (i == 16) { | |
355 | outb(REG_COMMAND_RX_WIN_TWO, iobase + REG_COMMAND); | |
356 | i = 0; | |
357 | } | |
358 | ||
359 | buf[n] = inb(iobase + offset + i); | |
360 | ||
361 | n++; | |
362 | i++; | |
363 | ||
364 | } | |
365 | ||
366 | return len; | |
367 | } | |
368 | ||
369 | ||
370 | static void bluecard_receive(bluecard_info_t *info, unsigned int offset) | |
371 | { | |
372 | unsigned int iobase; | |
373 | unsigned char buf[31]; | |
374 | int i, len; | |
375 | ||
376 | if (!info) { | |
377 | BT_ERR("Unknown device"); | |
378 | return; | |
379 | } | |
380 | ||
9a017a91 | 381 | iobase = info->p_dev->resource[0]->start; |
1da177e4 LT |
382 | |
383 | if (test_bit(XMIT_SENDING_READY, &(info->tx_state))) | |
384 | bluecard_enable_activity_led(info); | |
385 | ||
386 | len = bluecard_read(iobase, offset, buf, sizeof(buf)); | |
387 | ||
388 | for (i = 0; i < len; i++) { | |
389 | ||
390 | /* Allocate packet */ | |
391 | if (info->rx_skb == NULL) { | |
392 | info->rx_state = RECV_WAIT_PACKET_TYPE; | |
393 | info->rx_count = 0; | |
394 | if (!(info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) { | |
395 | BT_ERR("Can't allocate mem for new packet"); | |
396 | return; | |
397 | } | |
398 | } | |
399 | ||
400 | if (info->rx_state == RECV_WAIT_PACKET_TYPE) { | |
401 | ||
402 | info->rx_skb->dev = (void *) info->hdev; | |
0d48d939 | 403 | bt_cb(info->rx_skb)->pkt_type = buf[i]; |
1da177e4 | 404 | |
0d48d939 | 405 | switch (bt_cb(info->rx_skb)->pkt_type) { |
1da177e4 LT |
406 | |
407 | case 0x00: | |
408 | /* init packet */ | |
409 | if (offset != 0x00) { | |
410 | set_bit(XMIT_BUF_ONE_READY, &(info->tx_state)); | |
411 | set_bit(XMIT_BUF_TWO_READY, &(info->tx_state)); | |
412 | set_bit(XMIT_SENDING_READY, &(info->tx_state)); | |
413 | bluecard_write_wakeup(info); | |
414 | } | |
415 | ||
416 | kfree_skb(info->rx_skb); | |
417 | info->rx_skb = NULL; | |
418 | break; | |
419 | ||
420 | case HCI_EVENT_PKT: | |
421 | info->rx_state = RECV_WAIT_EVENT_HEADER; | |
422 | info->rx_count = HCI_EVENT_HDR_SIZE; | |
423 | break; | |
424 | ||
425 | case HCI_ACLDATA_PKT: | |
426 | info->rx_state = RECV_WAIT_ACL_HEADER; | |
427 | info->rx_count = HCI_ACL_HDR_SIZE; | |
428 | break; | |
429 | ||
430 | case HCI_SCODATA_PKT: | |
431 | info->rx_state = RECV_WAIT_SCO_HEADER; | |
432 | info->rx_count = HCI_SCO_HDR_SIZE; | |
433 | break; | |
434 | ||
435 | default: | |
436 | /* unknown packet */ | |
0d48d939 | 437 | BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type); |
1da177e4 LT |
438 | info->hdev->stat.err_rx++; |
439 | ||
440 | kfree_skb(info->rx_skb); | |
441 | info->rx_skb = NULL; | |
442 | break; | |
443 | ||
444 | } | |
445 | ||
446 | } else { | |
447 | ||
448 | *skb_put(info->rx_skb, 1) = buf[i]; | |
449 | info->rx_count--; | |
450 | ||
451 | if (info->rx_count == 0) { | |
452 | ||
453 | int dlen; | |
454 | struct hci_event_hdr *eh; | |
455 | struct hci_acl_hdr *ah; | |
456 | struct hci_sco_hdr *sh; | |
457 | ||
458 | switch (info->rx_state) { | |
459 | ||
460 | case RECV_WAIT_EVENT_HEADER: | |
2a123b86 | 461 | eh = hci_event_hdr(info->rx_skb); |
1da177e4 LT |
462 | info->rx_state = RECV_WAIT_DATA; |
463 | info->rx_count = eh->plen; | |
464 | break; | |
465 | ||
466 | case RECV_WAIT_ACL_HEADER: | |
2a123b86 | 467 | ah = hci_acl_hdr(info->rx_skb); |
1da177e4 LT |
468 | dlen = __le16_to_cpu(ah->dlen); |
469 | info->rx_state = RECV_WAIT_DATA; | |
470 | info->rx_count = dlen; | |
471 | break; | |
472 | ||
473 | case RECV_WAIT_SCO_HEADER: | |
2a123b86 | 474 | sh = hci_sco_hdr(info->rx_skb); |
1da177e4 LT |
475 | info->rx_state = RECV_WAIT_DATA; |
476 | info->rx_count = sh->dlen; | |
477 | break; | |
478 | ||
479 | case RECV_WAIT_DATA: | |
480 | hci_recv_frame(info->rx_skb); | |
481 | info->rx_skb = NULL; | |
482 | break; | |
483 | ||
484 | } | |
485 | ||
486 | } | |
487 | ||
488 | } | |
489 | ||
490 | ||
491 | } | |
492 | ||
493 | info->hdev->stat.byte_rx += len; | |
494 | } | |
495 | ||
496 | ||
7d12e780 | 497 | static irqreturn_t bluecard_interrupt(int irq, void *dev_inst) |
1da177e4 LT |
498 | { |
499 | bluecard_info_t *info = dev_inst; | |
500 | unsigned int iobase; | |
501 | unsigned char reg; | |
502 | ||
7427847d MF |
503 | if (!info || !info->hdev) |
504 | /* our irq handler is shared */ | |
505 | return IRQ_NONE; | |
1da177e4 LT |
506 | |
507 | if (!test_bit(CARD_READY, &(info->hw_state))) | |
508 | return IRQ_HANDLED; | |
509 | ||
9a017a91 | 510 | iobase = info->p_dev->resource[0]->start; |
1da177e4 LT |
511 | |
512 | spin_lock(&(info->lock)); | |
513 | ||
514 | /* Disable interrupt */ | |
515 | info->ctrl_reg &= ~REG_CONTROL_INTERRUPT; | |
516 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
517 | ||
518 | reg = inb(iobase + REG_INTERRUPT); | |
519 | ||
520 | if ((reg != 0x00) && (reg != 0xff)) { | |
521 | ||
522 | if (reg & 0x04) { | |
523 | bluecard_receive(info, 0x00); | |
524 | outb(0x04, iobase + REG_INTERRUPT); | |
525 | outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND); | |
526 | } | |
527 | ||
528 | if (reg & 0x08) { | |
529 | bluecard_receive(info, 0x10); | |
530 | outb(0x08, iobase + REG_INTERRUPT); | |
531 | outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND); | |
532 | } | |
533 | ||
534 | if (reg & 0x01) { | |
535 | set_bit(XMIT_BUF_ONE_READY, &(info->tx_state)); | |
536 | outb(0x01, iobase + REG_INTERRUPT); | |
537 | bluecard_write_wakeup(info); | |
538 | } | |
539 | ||
540 | if (reg & 0x02) { | |
541 | set_bit(XMIT_BUF_TWO_READY, &(info->tx_state)); | |
542 | outb(0x02, iobase + REG_INTERRUPT); | |
543 | bluecard_write_wakeup(info); | |
544 | } | |
545 | ||
546 | } | |
547 | ||
548 | /* Enable interrupt */ | |
549 | info->ctrl_reg |= REG_CONTROL_INTERRUPT; | |
550 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
551 | ||
552 | spin_unlock(&(info->lock)); | |
553 | ||
554 | return IRQ_HANDLED; | |
555 | } | |
556 | ||
557 | ||
558 | ||
559 | /* ======================== Device specific HCI commands ======================== */ | |
560 | ||
561 | ||
562 | static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud) | |
563 | { | |
155961e8 | 564 | bluecard_info_t *info = hci_get_drvdata(hdev); |
1da177e4 LT |
565 | struct sk_buff *skb; |
566 | ||
567 | /* Ericsson baud rate command */ | |
568 | unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 }; | |
569 | ||
570 | if (!(skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) { | |
571 | BT_ERR("Can't allocate mem for new packet"); | |
572 | return -1; | |
573 | } | |
574 | ||
575 | switch (baud) { | |
576 | case 460800: | |
577 | cmd[4] = 0x00; | |
0d48d939 | 578 | bt_cb(skb)->pkt_type = PKT_BAUD_RATE_460800; |
1da177e4 LT |
579 | break; |
580 | case 230400: | |
581 | cmd[4] = 0x01; | |
0d48d939 | 582 | bt_cb(skb)->pkt_type = PKT_BAUD_RATE_230400; |
1da177e4 LT |
583 | break; |
584 | case 115200: | |
585 | cmd[4] = 0x02; | |
0d48d939 | 586 | bt_cb(skb)->pkt_type = PKT_BAUD_RATE_115200; |
1da177e4 LT |
587 | break; |
588 | case 57600: | |
589 | /* Fall through... */ | |
590 | default: | |
591 | cmd[4] = 0x03; | |
0d48d939 | 592 | bt_cb(skb)->pkt_type = PKT_BAUD_RATE_57600; |
1da177e4 LT |
593 | break; |
594 | } | |
595 | ||
596 | memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd)); | |
597 | ||
598 | skb_queue_tail(&(info->txq), skb); | |
599 | ||
600 | bluecard_write_wakeup(info); | |
601 | ||
602 | return 0; | |
603 | } | |
604 | ||
605 | ||
606 | ||
607 | /* ======================== HCI interface ======================== */ | |
608 | ||
609 | ||
610 | static int bluecard_hci_flush(struct hci_dev *hdev) | |
611 | { | |
155961e8 | 612 | bluecard_info_t *info = hci_get_drvdata(hdev); |
1da177e4 LT |
613 | |
614 | /* Drop TX queue */ | |
615 | skb_queue_purge(&(info->txq)); | |
616 | ||
617 | return 0; | |
618 | } | |
619 | ||
620 | ||
621 | static int bluecard_hci_open(struct hci_dev *hdev) | |
622 | { | |
155961e8 | 623 | bluecard_info_t *info = hci_get_drvdata(hdev); |
9a017a91 | 624 | unsigned int iobase = info->p_dev->resource[0]->start; |
1da177e4 LT |
625 | |
626 | if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) | |
627 | bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE); | |
628 | ||
629 | if (test_and_set_bit(HCI_RUNNING, &(hdev->flags))) | |
630 | return 0; | |
631 | ||
632 | if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) { | |
633 | /* Enable LED */ | |
634 | outb(0x08 | 0x20, iobase + 0x30); | |
635 | } | |
636 | ||
637 | return 0; | |
638 | } | |
639 | ||
640 | ||
641 | static int bluecard_hci_close(struct hci_dev *hdev) | |
642 | { | |
155961e8 | 643 | bluecard_info_t *info = hci_get_drvdata(hdev); |
9a017a91 | 644 | unsigned int iobase = info->p_dev->resource[0]->start; |
1da177e4 LT |
645 | |
646 | if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags))) | |
647 | return 0; | |
648 | ||
649 | bluecard_hci_flush(hdev); | |
650 | ||
651 | if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) { | |
652 | /* Disable LED */ | |
653 | outb(0x00, iobase + 0x30); | |
654 | } | |
655 | ||
656 | return 0; | |
657 | } | |
658 | ||
659 | ||
660 | static int bluecard_hci_send_frame(struct sk_buff *skb) | |
661 | { | |
662 | bluecard_info_t *info; | |
663 | struct hci_dev *hdev = (struct hci_dev *)(skb->dev); | |
664 | ||
665 | if (!hdev) { | |
666 | BT_ERR("Frame for unknown HCI device (hdev=NULL)"); | |
667 | return -ENODEV; | |
668 | } | |
669 | ||
155961e8 | 670 | info = hci_get_drvdata(hdev); |
1da177e4 | 671 | |
0d48d939 | 672 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
673 | case HCI_COMMAND_PKT: |
674 | hdev->stat.cmd_tx++; | |
675 | break; | |
676 | case HCI_ACLDATA_PKT: | |
677 | hdev->stat.acl_tx++; | |
678 | break; | |
679 | case HCI_SCODATA_PKT: | |
680 | hdev->stat.sco_tx++; | |
681 | break; | |
682 | }; | |
683 | ||
684 | /* Prepend skb with frame type */ | |
0d48d939 | 685 | memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1); |
1da177e4 LT |
686 | skb_queue_tail(&(info->txq), skb); |
687 | ||
688 | bluecard_write_wakeup(info); | |
689 | ||
690 | return 0; | |
691 | } | |
692 | ||
693 | ||
1da177e4 LT |
694 | static int bluecard_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg) |
695 | { | |
696 | return -ENOIOCTLCMD; | |
697 | } | |
698 | ||
699 | ||
700 | ||
701 | /* ======================== Card services HCI interaction ======================== */ | |
702 | ||
703 | ||
704 | static int bluecard_open(bluecard_info_t *info) | |
705 | { | |
9a017a91 | 706 | unsigned int iobase = info->p_dev->resource[0]->start; |
1da177e4 LT |
707 | struct hci_dev *hdev; |
708 | unsigned char id; | |
709 | ||
710 | spin_lock_init(&(info->lock)); | |
711 | ||
712 | init_timer(&(info->timer)); | |
713 | info->timer.function = &bluecard_activity_led_timeout; | |
714 | info->timer.data = (u_long)info; | |
715 | ||
716 | skb_queue_head_init(&(info->txq)); | |
717 | ||
718 | info->rx_state = RECV_WAIT_PACKET_TYPE; | |
719 | info->rx_count = 0; | |
720 | info->rx_skb = NULL; | |
721 | ||
722 | /* Initialize HCI device */ | |
723 | hdev = hci_alloc_dev(); | |
724 | if (!hdev) { | |
725 | BT_ERR("Can't allocate HCI device"); | |
726 | return -ENOMEM; | |
727 | } | |
728 | ||
729 | info->hdev = hdev; | |
730 | ||
c13854ce | 731 | hdev->bus = HCI_PCCARD; |
155961e8 | 732 | hci_set_drvdata(hdev, info); |
27d35284 | 733 | SET_HCIDEV_DEV(hdev, &info->p_dev->dev); |
1da177e4 LT |
734 | |
735 | hdev->open = bluecard_hci_open; | |
736 | hdev->close = bluecard_hci_close; | |
737 | hdev->flush = bluecard_hci_flush; | |
738 | hdev->send = bluecard_hci_send_frame; | |
1da177e4 LT |
739 | hdev->ioctl = bluecard_hci_ioctl; |
740 | ||
1da177e4 LT |
741 | id = inb(iobase + 0x30); |
742 | ||
743 | if ((id & 0x0f) == 0x02) | |
744 | set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)); | |
745 | ||
746 | if (id & 0x10) | |
747 | set_bit(CARD_HAS_POWER_LED, &(info->hw_state)); | |
748 | ||
749 | if (id & 0x20) | |
750 | set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state)); | |
751 | ||
752 | /* Reset card */ | |
753 | info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET; | |
754 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
755 | ||
756 | /* Turn FPGA off */ | |
757 | outb(0x80, iobase + 0x30); | |
758 | ||
759 | /* Wait some time */ | |
760 | msleep(10); | |
761 | ||
762 | /* Turn FPGA on */ | |
763 | outb(0x00, iobase + 0x30); | |
764 | ||
765 | /* Activate card */ | |
766 | info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU; | |
767 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
768 | ||
769 | /* Enable interrupt */ | |
770 | outb(0xff, iobase + REG_INTERRUPT); | |
771 | info->ctrl_reg |= REG_CONTROL_INTERRUPT; | |
772 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
773 | ||
774 | if ((id & 0x0f) == 0x03) { | |
775 | /* Disable RTS */ | |
776 | info->ctrl_reg |= REG_CONTROL_RTS; | |
777 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
778 | ||
779 | /* Set baud rate */ | |
780 | info->ctrl_reg |= 0x03; | |
781 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
782 | ||
783 | /* Enable RTS */ | |
784 | info->ctrl_reg &= ~REG_CONTROL_RTS; | |
785 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
786 | ||
787 | set_bit(XMIT_BUF_ONE_READY, &(info->tx_state)); | |
788 | set_bit(XMIT_BUF_TWO_READY, &(info->tx_state)); | |
789 | set_bit(XMIT_SENDING_READY, &(info->tx_state)); | |
790 | } | |
791 | ||
792 | /* Start the RX buffers */ | |
793 | outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND); | |
794 | outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND); | |
795 | ||
796 | /* Signal that the hardware is ready */ | |
797 | set_bit(CARD_READY, &(info->hw_state)); | |
798 | ||
799 | /* Drop TX queue */ | |
800 | skb_queue_purge(&(info->txq)); | |
801 | ||
802 | /* Control the point at which RTS is enabled */ | |
803 | outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL); | |
804 | ||
805 | /* Timeout before it is safe to send the first HCI packet */ | |
806 | msleep(1250); | |
807 | ||
808 | /* Register HCI device */ | |
809 | if (hci_register_dev(hdev) < 0) { | |
810 | BT_ERR("Can't register HCI device"); | |
811 | info->hdev = NULL; | |
812 | hci_free_dev(hdev); | |
813 | return -ENODEV; | |
814 | } | |
815 | ||
816 | return 0; | |
817 | } | |
818 | ||
819 | ||
820 | static int bluecard_close(bluecard_info_t *info) | |
821 | { | |
9a017a91 | 822 | unsigned int iobase = info->p_dev->resource[0]->start; |
1da177e4 LT |
823 | struct hci_dev *hdev = info->hdev; |
824 | ||
825 | if (!hdev) | |
826 | return -ENODEV; | |
827 | ||
828 | bluecard_hci_close(hdev); | |
829 | ||
830 | clear_bit(CARD_READY, &(info->hw_state)); | |
831 | ||
832 | /* Reset card */ | |
833 | info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET; | |
834 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
835 | ||
836 | /* Turn FPGA off */ | |
837 | outb(0x80, iobase + 0x30); | |
838 | ||
13ea4015 | 839 | hci_unregister_dev(hdev); |
1da177e4 LT |
840 | hci_free_dev(hdev); |
841 | ||
842 | return 0; | |
843 | } | |
844 | ||
15b99ac1 | 845 | static int bluecard_probe(struct pcmcia_device *link) |
1da177e4 LT |
846 | { |
847 | bluecard_info_t *info; | |
1da177e4 LT |
848 | |
849 | /* Create new info device */ | |
089b1dbb | 850 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
1da177e4 | 851 | if (!info) |
f8cfa618 | 852 | return -ENOMEM; |
1da177e4 | 853 | |
fba395ee | 854 | info->p_dev = link; |
1da177e4 LT |
855 | link->priv = info; |
856 | ||
1ac71e5a | 857 | link->config_flags |= CONF_ENABLE_IRQ; |
1da177e4 | 858 | |
15b99ac1 | 859 | return bluecard_config(link); |
1da177e4 LT |
860 | } |
861 | ||
862 | ||
fba395ee | 863 | static void bluecard_detach(struct pcmcia_device *link) |
1da177e4 LT |
864 | { |
865 | bluecard_info_t *info = link->priv; | |
1da177e4 | 866 | |
e2d40963 | 867 | bluecard_release(link); |
1da177e4 LT |
868 | kfree(info); |
869 | } | |
870 | ||
871 | ||
15b99ac1 | 872 | static int bluecard_config(struct pcmcia_device *link) |
1da177e4 | 873 | { |
1da177e4 | 874 | bluecard_info_t *info = link->priv; |
af2b3b50 | 875 | int i, n; |
1da177e4 | 876 | |
7feabb64 | 877 | link->config_index = 0x20; |
90abdc3b DB |
878 | |
879 | link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; | |
880 | link->resource[0]->end = 64; | |
881 | link->io_lines = 6; | |
1da177e4 LT |
882 | |
883 | for (n = 0; n < 0x400; n += 0x40) { | |
90abdc3b DB |
884 | link->resource[0]->start = n ^ 0x300; |
885 | i = pcmcia_request_io(link); | |
4c89e88b | 886 | if (i == 0) |
1da177e4 LT |
887 | break; |
888 | } | |
889 | ||
9ac3e58c | 890 | if (i != 0) |
1da177e4 | 891 | goto failed; |
1da177e4 | 892 | |
eb14120f | 893 | i = pcmcia_request_irq(link, bluecard_interrupt); |
9ac3e58c | 894 | if (i != 0) |
eb14120f | 895 | goto failed; |
1da177e4 | 896 | |
1ac71e5a | 897 | i = pcmcia_enable_device(link); |
9ac3e58c | 898 | if (i != 0) |
1da177e4 | 899 | goto failed; |
1da177e4 LT |
900 | |
901 | if (bluecard_open(info) != 0) | |
902 | goto failed; | |
903 | ||
15b99ac1 | 904 | return 0; |
1da177e4 | 905 | |
1da177e4 LT |
906 | failed: |
907 | bluecard_release(link); | |
15b99ac1 | 908 | return -ENODEV; |
1da177e4 LT |
909 | } |
910 | ||
911 | ||
fba395ee | 912 | static void bluecard_release(struct pcmcia_device *link) |
1da177e4 LT |
913 | { |
914 | bluecard_info_t *info = link->priv; | |
915 | ||
e2d40963 | 916 | bluecard_close(info); |
1da177e4 LT |
917 | |
918 | del_timer(&(info->timer)); | |
919 | ||
fba395ee | 920 | pcmcia_disable_device(link); |
1da177e4 LT |
921 | } |
922 | ||
25f8f54f | 923 | static const struct pcmcia_device_id bluecard_ids[] = { |
7f70cb6d DB |
924 | PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e), |
925 | PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c), | |
926 | PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab), | |
927 | PCMCIA_DEVICE_NULL | |
928 | }; | |
929 | MODULE_DEVICE_TABLE(pcmcia, bluecard_ids); | |
930 | ||
1da177e4 LT |
931 | static struct pcmcia_driver bluecard_driver = { |
932 | .owner = THIS_MODULE, | |
2e9b981a | 933 | .name = "bluecard_cs", |
15b99ac1 | 934 | .probe = bluecard_probe, |
cc3b4866 | 935 | .remove = bluecard_detach, |
7f70cb6d | 936 | .id_table = bluecard_ids, |
1da177e4 LT |
937 | }; |
938 | ||
939 | static int __init init_bluecard_cs(void) | |
940 | { | |
941 | return pcmcia_register_driver(&bluecard_driver); | |
942 | } | |
943 | ||
944 | ||
945 | static void __exit exit_bluecard_cs(void) | |
946 | { | |
947 | pcmcia_unregister_driver(&bluecard_driver); | |
1da177e4 LT |
948 | } |
949 | ||
950 | module_init(init_bluecard_cs); | |
951 | module_exit(exit_bluecard_cs); |