Commit | Line | Data |
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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 { | |
fc5fef61 GP |
234 | unsigned int iobase = info->p_dev->resource[0]->start; |
235 | unsigned int offset; | |
236 | unsigned char command; | |
237 | unsigned long ready_bit; | |
1da177e4 | 238 | register struct sk_buff *skb; |
fc5fef61 | 239 | int len; |
1da177e4 LT |
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 | ||
a08b15e6 VI |
260 | skb = skb_dequeue(&(info->txq)); |
261 | if (!skb) | |
1da177e4 LT |
262 | break; |
263 | ||
0d48d939 | 264 | if (bt_cb(skb)->pkt_type & 0x80) { |
1da177e4 LT |
265 | /* Disable RTS */ |
266 | info->ctrl_reg |= REG_CONTROL_RTS; | |
267 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
268 | } | |
269 | ||
270 | /* Activate LED */ | |
271 | bluecard_enable_activity_led(info); | |
272 | ||
273 | /* Send frame */ | |
274 | len = bluecard_write(iobase, offset, skb->data, skb->len); | |
275 | ||
276 | /* Tell the FPGA to send the data */ | |
277 | outb_p(command, iobase + REG_COMMAND); | |
278 | ||
279 | /* Mark the buffer as dirty */ | |
280 | clear_bit(ready_bit, &(info->tx_state)); | |
281 | ||
0d48d939 | 282 | if (bt_cb(skb)->pkt_type & 0x80) { |
7259f0d0 | 283 | DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq); |
1da177e4 LT |
284 | DEFINE_WAIT(wait); |
285 | ||
286 | unsigned char baud_reg; | |
287 | ||
0d48d939 | 288 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
289 | case PKT_BAUD_RATE_460800: |
290 | baud_reg = REG_CONTROL_BAUD_RATE_460800; | |
291 | break; | |
292 | case PKT_BAUD_RATE_230400: | |
293 | baud_reg = REG_CONTROL_BAUD_RATE_230400; | |
294 | break; | |
295 | case PKT_BAUD_RATE_115200: | |
296 | baud_reg = REG_CONTROL_BAUD_RATE_115200; | |
297 | break; | |
298 | case PKT_BAUD_RATE_57600: | |
299 | /* Fall through... */ | |
300 | default: | |
301 | baud_reg = REG_CONTROL_BAUD_RATE_57600; | |
302 | break; | |
303 | } | |
304 | ||
305 | /* Wait until the command reaches the baseband */ | |
306 | prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE); | |
307 | schedule_timeout(HZ/10); | |
308 | finish_wait(&wq, &wait); | |
309 | ||
310 | /* Set baud on baseband */ | |
311 | info->ctrl_reg &= ~0x03; | |
312 | info->ctrl_reg |= baud_reg; | |
313 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
314 | ||
315 | /* Enable RTS */ | |
316 | info->ctrl_reg &= ~REG_CONTROL_RTS; | |
317 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
318 | ||
319 | /* Wait before the next HCI packet can be send */ | |
320 | prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE); | |
321 | schedule_timeout(HZ); | |
322 | finish_wait(&wq, &wait); | |
323 | } | |
324 | ||
325 | if (len == skb->len) { | |
326 | kfree_skb(skb); | |
327 | } else { | |
328 | skb_pull(skb, len); | |
329 | skb_queue_head(&(info->txq), skb); | |
330 | } | |
331 | ||
332 | info->hdev->stat.byte_tx += len; | |
333 | ||
334 | /* Change buffer */ | |
335 | change_bit(XMIT_BUFFER_NUMBER, &(info->tx_state)); | |
336 | ||
337 | } while (test_bit(XMIT_WAKEUP, &(info->tx_state))); | |
338 | ||
339 | clear_bit(XMIT_SENDING, &(info->tx_state)); | |
340 | } | |
341 | ||
342 | ||
343 | static int bluecard_read(unsigned int iobase, unsigned int offset, __u8 *buf, int size) | |
344 | { | |
345 | int i, n, len; | |
346 | ||
347 | outb(REG_COMMAND_RX_WIN_ONE, iobase + REG_COMMAND); | |
348 | ||
349 | len = inb(iobase + offset); | |
350 | n = 0; | |
351 | i = 1; | |
352 | ||
353 | while (n < len) { | |
354 | ||
355 | if (i == 16) { | |
356 | outb(REG_COMMAND_RX_WIN_TWO, iobase + REG_COMMAND); | |
357 | i = 0; | |
358 | } | |
359 | ||
360 | buf[n] = inb(iobase + offset + i); | |
361 | ||
362 | n++; | |
363 | i++; | |
364 | ||
365 | } | |
366 | ||
367 | return len; | |
368 | } | |
369 | ||
370 | ||
371 | static void bluecard_receive(bluecard_info_t *info, unsigned int offset) | |
372 | { | |
373 | unsigned int iobase; | |
374 | unsigned char buf[31]; | |
375 | int i, len; | |
376 | ||
377 | if (!info) { | |
378 | BT_ERR("Unknown device"); | |
379 | return; | |
380 | } | |
381 | ||
9a017a91 | 382 | iobase = info->p_dev->resource[0]->start; |
1da177e4 LT |
383 | |
384 | if (test_bit(XMIT_SENDING_READY, &(info->tx_state))) | |
385 | bluecard_enable_activity_led(info); | |
386 | ||
387 | len = bluecard_read(iobase, offset, buf, sizeof(buf)); | |
388 | ||
389 | for (i = 0; i < len; i++) { | |
390 | ||
391 | /* Allocate packet */ | |
392 | if (info->rx_skb == NULL) { | |
393 | info->rx_state = RECV_WAIT_PACKET_TYPE; | |
394 | info->rx_count = 0; | |
a08b15e6 VI |
395 | info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC); |
396 | if (!info->rx_skb) { | |
1da177e4 LT |
397 | BT_ERR("Can't allocate mem for new packet"); |
398 | return; | |
399 | } | |
400 | } | |
401 | ||
402 | if (info->rx_state == RECV_WAIT_PACKET_TYPE) { | |
403 | ||
0d48d939 | 404 | bt_cb(info->rx_skb)->pkt_type = buf[i]; |
1da177e4 | 405 | |
0d48d939 | 406 | switch (bt_cb(info->rx_skb)->pkt_type) { |
1da177e4 LT |
407 | |
408 | case 0x00: | |
409 | /* init packet */ | |
410 | if (offset != 0x00) { | |
411 | set_bit(XMIT_BUF_ONE_READY, &(info->tx_state)); | |
412 | set_bit(XMIT_BUF_TWO_READY, &(info->tx_state)); | |
413 | set_bit(XMIT_SENDING_READY, &(info->tx_state)); | |
414 | bluecard_write_wakeup(info); | |
415 | } | |
416 | ||
417 | kfree_skb(info->rx_skb); | |
418 | info->rx_skb = NULL; | |
419 | break; | |
420 | ||
421 | case HCI_EVENT_PKT: | |
422 | info->rx_state = RECV_WAIT_EVENT_HEADER; | |
423 | info->rx_count = HCI_EVENT_HDR_SIZE; | |
424 | break; | |
425 | ||
426 | case HCI_ACLDATA_PKT: | |
427 | info->rx_state = RECV_WAIT_ACL_HEADER; | |
428 | info->rx_count = HCI_ACL_HDR_SIZE; | |
429 | break; | |
430 | ||
431 | case HCI_SCODATA_PKT: | |
432 | info->rx_state = RECV_WAIT_SCO_HEADER; | |
433 | info->rx_count = HCI_SCO_HDR_SIZE; | |
434 | break; | |
435 | ||
436 | default: | |
437 | /* unknown packet */ | |
0d48d939 | 438 | BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type); |
1da177e4 LT |
439 | info->hdev->stat.err_rx++; |
440 | ||
441 | kfree_skb(info->rx_skb); | |
442 | info->rx_skb = NULL; | |
443 | break; | |
444 | ||
445 | } | |
446 | ||
447 | } else { | |
448 | ||
449 | *skb_put(info->rx_skb, 1) = buf[i]; | |
450 | info->rx_count--; | |
451 | ||
452 | if (info->rx_count == 0) { | |
453 | ||
454 | int dlen; | |
455 | struct hci_event_hdr *eh; | |
456 | struct hci_acl_hdr *ah; | |
457 | struct hci_sco_hdr *sh; | |
458 | ||
459 | switch (info->rx_state) { | |
460 | ||
461 | case RECV_WAIT_EVENT_HEADER: | |
2a123b86 | 462 | eh = hci_event_hdr(info->rx_skb); |
1da177e4 LT |
463 | info->rx_state = RECV_WAIT_DATA; |
464 | info->rx_count = eh->plen; | |
465 | break; | |
466 | ||
467 | case RECV_WAIT_ACL_HEADER: | |
2a123b86 | 468 | ah = hci_acl_hdr(info->rx_skb); |
1da177e4 LT |
469 | dlen = __le16_to_cpu(ah->dlen); |
470 | info->rx_state = RECV_WAIT_DATA; | |
471 | info->rx_count = dlen; | |
472 | break; | |
473 | ||
474 | case RECV_WAIT_SCO_HEADER: | |
2a123b86 | 475 | sh = hci_sco_hdr(info->rx_skb); |
1da177e4 LT |
476 | info->rx_state = RECV_WAIT_DATA; |
477 | info->rx_count = sh->dlen; | |
478 | break; | |
479 | ||
480 | case RECV_WAIT_DATA: | |
e1a26170 | 481 | hci_recv_frame(info->hdev, info->rx_skb); |
1da177e4 LT |
482 | info->rx_skb = NULL; |
483 | break; | |
484 | ||
485 | } | |
486 | ||
487 | } | |
488 | ||
489 | } | |
490 | ||
491 | ||
492 | } | |
493 | ||
494 | info->hdev->stat.byte_rx += len; | |
495 | } | |
496 | ||
497 | ||
7d12e780 | 498 | static irqreturn_t bluecard_interrupt(int irq, void *dev_inst) |
1da177e4 LT |
499 | { |
500 | bluecard_info_t *info = dev_inst; | |
501 | unsigned int iobase; | |
502 | unsigned char reg; | |
503 | ||
7427847d MF |
504 | if (!info || !info->hdev) |
505 | /* our irq handler is shared */ | |
506 | return IRQ_NONE; | |
1da177e4 LT |
507 | |
508 | if (!test_bit(CARD_READY, &(info->hw_state))) | |
509 | return IRQ_HANDLED; | |
510 | ||
9a017a91 | 511 | iobase = info->p_dev->resource[0]->start; |
1da177e4 LT |
512 | |
513 | spin_lock(&(info->lock)); | |
514 | ||
515 | /* Disable interrupt */ | |
516 | info->ctrl_reg &= ~REG_CONTROL_INTERRUPT; | |
517 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
518 | ||
519 | reg = inb(iobase + REG_INTERRUPT); | |
520 | ||
521 | if ((reg != 0x00) && (reg != 0xff)) { | |
522 | ||
523 | if (reg & 0x04) { | |
524 | bluecard_receive(info, 0x00); | |
525 | outb(0x04, iobase + REG_INTERRUPT); | |
526 | outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND); | |
527 | } | |
528 | ||
529 | if (reg & 0x08) { | |
530 | bluecard_receive(info, 0x10); | |
531 | outb(0x08, iobase + REG_INTERRUPT); | |
532 | outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND); | |
533 | } | |
534 | ||
535 | if (reg & 0x01) { | |
536 | set_bit(XMIT_BUF_ONE_READY, &(info->tx_state)); | |
537 | outb(0x01, iobase + REG_INTERRUPT); | |
538 | bluecard_write_wakeup(info); | |
539 | } | |
540 | ||
541 | if (reg & 0x02) { | |
542 | set_bit(XMIT_BUF_TWO_READY, &(info->tx_state)); | |
543 | outb(0x02, iobase + REG_INTERRUPT); | |
544 | bluecard_write_wakeup(info); | |
545 | } | |
546 | ||
547 | } | |
548 | ||
549 | /* Enable interrupt */ | |
550 | info->ctrl_reg |= REG_CONTROL_INTERRUPT; | |
551 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
552 | ||
553 | spin_unlock(&(info->lock)); | |
554 | ||
555 | return IRQ_HANDLED; | |
556 | } | |
557 | ||
558 | ||
559 | ||
560 | /* ======================== Device specific HCI commands ======================== */ | |
561 | ||
562 | ||
563 | static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud) | |
564 | { | |
155961e8 | 565 | bluecard_info_t *info = hci_get_drvdata(hdev); |
1da177e4 LT |
566 | struct sk_buff *skb; |
567 | ||
568 | /* Ericsson baud rate command */ | |
569 | unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 }; | |
570 | ||
a08b15e6 VI |
571 | skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC); |
572 | if (!skb) { | |
1da177e4 LT |
573 | BT_ERR("Can't allocate mem for new packet"); |
574 | return -1; | |
575 | } | |
576 | ||
577 | switch (baud) { | |
578 | case 460800: | |
579 | cmd[4] = 0x00; | |
0d48d939 | 580 | bt_cb(skb)->pkt_type = PKT_BAUD_RATE_460800; |
1da177e4 LT |
581 | break; |
582 | case 230400: | |
583 | cmd[4] = 0x01; | |
0d48d939 | 584 | bt_cb(skb)->pkt_type = PKT_BAUD_RATE_230400; |
1da177e4 LT |
585 | break; |
586 | case 115200: | |
587 | cmd[4] = 0x02; | |
0d48d939 | 588 | bt_cb(skb)->pkt_type = PKT_BAUD_RATE_115200; |
1da177e4 LT |
589 | break; |
590 | case 57600: | |
591 | /* Fall through... */ | |
592 | default: | |
593 | cmd[4] = 0x03; | |
0d48d939 | 594 | bt_cb(skb)->pkt_type = PKT_BAUD_RATE_57600; |
1da177e4 LT |
595 | break; |
596 | } | |
597 | ||
598 | memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd)); | |
599 | ||
600 | skb_queue_tail(&(info->txq), skb); | |
601 | ||
602 | bluecard_write_wakeup(info); | |
603 | ||
604 | return 0; | |
605 | } | |
606 | ||
607 | ||
608 | ||
609 | /* ======================== HCI interface ======================== */ | |
610 | ||
611 | ||
612 | static int bluecard_hci_flush(struct hci_dev *hdev) | |
613 | { | |
155961e8 | 614 | bluecard_info_t *info = hci_get_drvdata(hdev); |
1da177e4 LT |
615 | |
616 | /* Drop TX queue */ | |
617 | skb_queue_purge(&(info->txq)); | |
618 | ||
619 | return 0; | |
620 | } | |
621 | ||
622 | ||
623 | static int bluecard_hci_open(struct hci_dev *hdev) | |
624 | { | |
155961e8 | 625 | bluecard_info_t *info = hci_get_drvdata(hdev); |
1da177e4 LT |
626 | |
627 | if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) | |
628 | bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE); | |
629 | ||
630 | if (test_and_set_bit(HCI_RUNNING, &(hdev->flags))) | |
631 | return 0; | |
632 | ||
633 | if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) { | |
74ad8fda AE |
634 | unsigned int iobase = info->p_dev->resource[0]->start; |
635 | ||
1da177e4 LT |
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 | { | |
155961e8 | 646 | bluecard_info_t *info = hci_get_drvdata(hdev); |
1da177e4 LT |
647 | |
648 | if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags))) | |
649 | return 0; | |
650 | ||
651 | bluecard_hci_flush(hdev); | |
652 | ||
653 | if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) { | |
74ad8fda AE |
654 | unsigned int iobase = info->p_dev->resource[0]->start; |
655 | ||
1da177e4 LT |
656 | /* Disable LED */ |
657 | outb(0x00, iobase + 0x30); | |
658 | } | |
659 | ||
660 | return 0; | |
661 | } | |
662 | ||
663 | ||
7bd8f09f | 664 | static int bluecard_hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 | 665 | { |
3c69454a | 666 | bluecard_info_t *info = hci_get_drvdata(hdev); |
1da177e4 | 667 | |
0d48d939 | 668 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
669 | case HCI_COMMAND_PKT: |
670 | hdev->stat.cmd_tx++; | |
671 | break; | |
672 | case HCI_ACLDATA_PKT: | |
673 | hdev->stat.acl_tx++; | |
674 | break; | |
675 | case HCI_SCODATA_PKT: | |
676 | hdev->stat.sco_tx++; | |
677 | break; | |
ce9b0048 | 678 | } |
1da177e4 LT |
679 | |
680 | /* Prepend skb with frame type */ | |
0d48d939 | 681 | memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1); |
1da177e4 LT |
682 | skb_queue_tail(&(info->txq), skb); |
683 | ||
684 | bluecard_write_wakeup(info); | |
685 | ||
686 | return 0; | |
687 | } | |
688 | ||
689 | ||
1da177e4 LT |
690 | |
691 | /* ======================== Card services HCI interaction ======================== */ | |
692 | ||
693 | ||
694 | static int bluecard_open(bluecard_info_t *info) | |
695 | { | |
9a017a91 | 696 | unsigned int iobase = info->p_dev->resource[0]->start; |
1da177e4 LT |
697 | struct hci_dev *hdev; |
698 | unsigned char id; | |
699 | ||
700 | spin_lock_init(&(info->lock)); | |
701 | ||
702 | init_timer(&(info->timer)); | |
703 | info->timer.function = &bluecard_activity_led_timeout; | |
704 | info->timer.data = (u_long)info; | |
705 | ||
706 | skb_queue_head_init(&(info->txq)); | |
707 | ||
708 | info->rx_state = RECV_WAIT_PACKET_TYPE; | |
709 | info->rx_count = 0; | |
710 | info->rx_skb = NULL; | |
711 | ||
712 | /* Initialize HCI device */ | |
713 | hdev = hci_alloc_dev(); | |
714 | if (!hdev) { | |
715 | BT_ERR("Can't allocate HCI device"); | |
716 | return -ENOMEM; | |
717 | } | |
718 | ||
719 | info->hdev = hdev; | |
720 | ||
c13854ce | 721 | hdev->bus = HCI_PCCARD; |
155961e8 | 722 | hci_set_drvdata(hdev, info); |
27d35284 | 723 | SET_HCIDEV_DEV(hdev, &info->p_dev->dev); |
1da177e4 | 724 | |
87d82ee2 MH |
725 | hdev->open = bluecard_hci_open; |
726 | hdev->close = bluecard_hci_close; | |
727 | hdev->flush = bluecard_hci_flush; | |
728 | hdev->send = bluecard_hci_send_frame; | |
1da177e4 | 729 | |
1da177e4 LT |
730 | id = inb(iobase + 0x30); |
731 | ||
732 | if ((id & 0x0f) == 0x02) | |
733 | set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)); | |
734 | ||
735 | if (id & 0x10) | |
736 | set_bit(CARD_HAS_POWER_LED, &(info->hw_state)); | |
737 | ||
738 | if (id & 0x20) | |
739 | set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state)); | |
740 | ||
741 | /* Reset card */ | |
742 | info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET; | |
743 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
744 | ||
745 | /* Turn FPGA off */ | |
746 | outb(0x80, iobase + 0x30); | |
747 | ||
748 | /* Wait some time */ | |
749 | msleep(10); | |
750 | ||
751 | /* Turn FPGA on */ | |
752 | outb(0x00, iobase + 0x30); | |
753 | ||
754 | /* Activate card */ | |
755 | info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU; | |
756 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
757 | ||
758 | /* Enable interrupt */ | |
759 | outb(0xff, iobase + REG_INTERRUPT); | |
760 | info->ctrl_reg |= REG_CONTROL_INTERRUPT; | |
761 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
762 | ||
763 | if ((id & 0x0f) == 0x03) { | |
764 | /* Disable RTS */ | |
765 | info->ctrl_reg |= REG_CONTROL_RTS; | |
766 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
767 | ||
768 | /* Set baud rate */ | |
769 | info->ctrl_reg |= 0x03; | |
770 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
771 | ||
772 | /* Enable RTS */ | |
773 | info->ctrl_reg &= ~REG_CONTROL_RTS; | |
774 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
775 | ||
776 | set_bit(XMIT_BUF_ONE_READY, &(info->tx_state)); | |
777 | set_bit(XMIT_BUF_TWO_READY, &(info->tx_state)); | |
778 | set_bit(XMIT_SENDING_READY, &(info->tx_state)); | |
779 | } | |
780 | ||
781 | /* Start the RX buffers */ | |
782 | outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND); | |
783 | outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND); | |
784 | ||
785 | /* Signal that the hardware is ready */ | |
786 | set_bit(CARD_READY, &(info->hw_state)); | |
787 | ||
788 | /* Drop TX queue */ | |
789 | skb_queue_purge(&(info->txq)); | |
790 | ||
791 | /* Control the point at which RTS is enabled */ | |
792 | outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL); | |
793 | ||
794 | /* Timeout before it is safe to send the first HCI packet */ | |
795 | msleep(1250); | |
796 | ||
797 | /* Register HCI device */ | |
798 | if (hci_register_dev(hdev) < 0) { | |
799 | BT_ERR("Can't register HCI device"); | |
800 | info->hdev = NULL; | |
801 | hci_free_dev(hdev); | |
802 | return -ENODEV; | |
803 | } | |
804 | ||
805 | return 0; | |
806 | } | |
807 | ||
808 | ||
809 | static int bluecard_close(bluecard_info_t *info) | |
810 | { | |
9a017a91 | 811 | unsigned int iobase = info->p_dev->resource[0]->start; |
1da177e4 LT |
812 | struct hci_dev *hdev = info->hdev; |
813 | ||
814 | if (!hdev) | |
815 | return -ENODEV; | |
816 | ||
817 | bluecard_hci_close(hdev); | |
818 | ||
819 | clear_bit(CARD_READY, &(info->hw_state)); | |
820 | ||
821 | /* Reset card */ | |
822 | info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET; | |
823 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
824 | ||
825 | /* Turn FPGA off */ | |
826 | outb(0x80, iobase + 0x30); | |
827 | ||
13ea4015 | 828 | hci_unregister_dev(hdev); |
1da177e4 LT |
829 | hci_free_dev(hdev); |
830 | ||
831 | return 0; | |
832 | } | |
833 | ||
15b99ac1 | 834 | static int bluecard_probe(struct pcmcia_device *link) |
1da177e4 LT |
835 | { |
836 | bluecard_info_t *info; | |
1da177e4 LT |
837 | |
838 | /* Create new info device */ | |
1a31c602 | 839 | info = devm_kzalloc(&link->dev, sizeof(*info), GFP_KERNEL); |
1da177e4 | 840 | if (!info) |
f8cfa618 | 841 | return -ENOMEM; |
1da177e4 | 842 | |
fba395ee | 843 | info->p_dev = link; |
1da177e4 LT |
844 | link->priv = info; |
845 | ||
1ac71e5a | 846 | link->config_flags |= CONF_ENABLE_IRQ; |
1da177e4 | 847 | |
15b99ac1 | 848 | return bluecard_config(link); |
1da177e4 LT |
849 | } |
850 | ||
851 | ||
fba395ee | 852 | static void bluecard_detach(struct pcmcia_device *link) |
1da177e4 | 853 | { |
e2d40963 | 854 | bluecard_release(link); |
1da177e4 LT |
855 | } |
856 | ||
857 | ||
15b99ac1 | 858 | static int bluecard_config(struct pcmcia_device *link) |
1da177e4 | 859 | { |
1da177e4 | 860 | bluecard_info_t *info = link->priv; |
af2b3b50 | 861 | int i, n; |
1da177e4 | 862 | |
7feabb64 | 863 | link->config_index = 0x20; |
90abdc3b DB |
864 | |
865 | link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; | |
866 | link->resource[0]->end = 64; | |
867 | link->io_lines = 6; | |
1da177e4 LT |
868 | |
869 | for (n = 0; n < 0x400; n += 0x40) { | |
90abdc3b DB |
870 | link->resource[0]->start = n ^ 0x300; |
871 | i = pcmcia_request_io(link); | |
4c89e88b | 872 | if (i == 0) |
1da177e4 LT |
873 | break; |
874 | } | |
875 | ||
9ac3e58c | 876 | if (i != 0) |
1da177e4 | 877 | goto failed; |
1da177e4 | 878 | |
eb14120f | 879 | i = pcmcia_request_irq(link, bluecard_interrupt); |
9ac3e58c | 880 | if (i != 0) |
eb14120f | 881 | goto failed; |
1da177e4 | 882 | |
1ac71e5a | 883 | i = pcmcia_enable_device(link); |
9ac3e58c | 884 | if (i != 0) |
1da177e4 | 885 | goto failed; |
1da177e4 LT |
886 | |
887 | if (bluecard_open(info) != 0) | |
888 | goto failed; | |
889 | ||
15b99ac1 | 890 | return 0; |
1da177e4 | 891 | |
1da177e4 LT |
892 | failed: |
893 | bluecard_release(link); | |
15b99ac1 | 894 | return -ENODEV; |
1da177e4 LT |
895 | } |
896 | ||
897 | ||
fba395ee | 898 | static void bluecard_release(struct pcmcia_device *link) |
1da177e4 LT |
899 | { |
900 | bluecard_info_t *info = link->priv; | |
901 | ||
e2d40963 | 902 | bluecard_close(info); |
1da177e4 | 903 | |
d8ff9cdf | 904 | del_timer_sync(&(info->timer)); |
1da177e4 | 905 | |
fba395ee | 906 | pcmcia_disable_device(link); |
1da177e4 LT |
907 | } |
908 | ||
25f8f54f | 909 | static const struct pcmcia_device_id bluecard_ids[] = { |
7f70cb6d DB |
910 | PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e), |
911 | PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c), | |
912 | PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab), | |
913 | PCMCIA_DEVICE_NULL | |
914 | }; | |
915 | MODULE_DEVICE_TABLE(pcmcia, bluecard_ids); | |
916 | ||
1da177e4 LT |
917 | static struct pcmcia_driver bluecard_driver = { |
918 | .owner = THIS_MODULE, | |
2e9b981a | 919 | .name = "bluecard_cs", |
15b99ac1 | 920 | .probe = bluecard_probe, |
cc3b4866 | 921 | .remove = bluecard_detach, |
7f70cb6d | 922 | .id_table = bluecard_ids, |
1da177e4 | 923 | }; |
e0c005f4 | 924 | module_pcmcia_driver(bluecard_driver); |