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 | ||
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 | ||
0d48d939 | 402 | bt_cb(info->rx_skb)->pkt_type = buf[i]; |
1da177e4 | 403 | |
0d48d939 | 404 | switch (bt_cb(info->rx_skb)->pkt_type) { |
1da177e4 LT |
405 | |
406 | case 0x00: | |
407 | /* init packet */ | |
408 | if (offset != 0x00) { | |
409 | set_bit(XMIT_BUF_ONE_READY, &(info->tx_state)); | |
410 | set_bit(XMIT_BUF_TWO_READY, &(info->tx_state)); | |
411 | set_bit(XMIT_SENDING_READY, &(info->tx_state)); | |
412 | bluecard_write_wakeup(info); | |
413 | } | |
414 | ||
415 | kfree_skb(info->rx_skb); | |
416 | info->rx_skb = NULL; | |
417 | break; | |
418 | ||
419 | case HCI_EVENT_PKT: | |
420 | info->rx_state = RECV_WAIT_EVENT_HEADER; | |
421 | info->rx_count = HCI_EVENT_HDR_SIZE; | |
422 | break; | |
423 | ||
424 | case HCI_ACLDATA_PKT: | |
425 | info->rx_state = RECV_WAIT_ACL_HEADER; | |
426 | info->rx_count = HCI_ACL_HDR_SIZE; | |
427 | break; | |
428 | ||
429 | case HCI_SCODATA_PKT: | |
430 | info->rx_state = RECV_WAIT_SCO_HEADER; | |
431 | info->rx_count = HCI_SCO_HDR_SIZE; | |
432 | break; | |
433 | ||
434 | default: | |
435 | /* unknown packet */ | |
0d48d939 | 436 | BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type); |
1da177e4 LT |
437 | info->hdev->stat.err_rx++; |
438 | ||
439 | kfree_skb(info->rx_skb); | |
440 | info->rx_skb = NULL; | |
441 | break; | |
442 | ||
443 | } | |
444 | ||
445 | } else { | |
446 | ||
447 | *skb_put(info->rx_skb, 1) = buf[i]; | |
448 | info->rx_count--; | |
449 | ||
450 | if (info->rx_count == 0) { | |
451 | ||
452 | int dlen; | |
453 | struct hci_event_hdr *eh; | |
454 | struct hci_acl_hdr *ah; | |
455 | struct hci_sco_hdr *sh; | |
456 | ||
457 | switch (info->rx_state) { | |
458 | ||
459 | case RECV_WAIT_EVENT_HEADER: | |
2a123b86 | 460 | eh = hci_event_hdr(info->rx_skb); |
1da177e4 LT |
461 | info->rx_state = RECV_WAIT_DATA; |
462 | info->rx_count = eh->plen; | |
463 | break; | |
464 | ||
465 | case RECV_WAIT_ACL_HEADER: | |
2a123b86 | 466 | ah = hci_acl_hdr(info->rx_skb); |
1da177e4 LT |
467 | dlen = __le16_to_cpu(ah->dlen); |
468 | info->rx_state = RECV_WAIT_DATA; | |
469 | info->rx_count = dlen; | |
470 | break; | |
471 | ||
472 | case RECV_WAIT_SCO_HEADER: | |
2a123b86 | 473 | sh = hci_sco_hdr(info->rx_skb); |
1da177e4 LT |
474 | info->rx_state = RECV_WAIT_DATA; |
475 | info->rx_count = sh->dlen; | |
476 | break; | |
477 | ||
478 | case RECV_WAIT_DATA: | |
e1a26170 | 479 | hci_recv_frame(info->hdev, info->rx_skb); |
1da177e4 LT |
480 | info->rx_skb = NULL; |
481 | break; | |
482 | ||
483 | } | |
484 | ||
485 | } | |
486 | ||
487 | } | |
488 | ||
489 | ||
490 | } | |
491 | ||
492 | info->hdev->stat.byte_rx += len; | |
493 | } | |
494 | ||
495 | ||
7d12e780 | 496 | static irqreturn_t bluecard_interrupt(int irq, void *dev_inst) |
1da177e4 LT |
497 | { |
498 | bluecard_info_t *info = dev_inst; | |
499 | unsigned int iobase; | |
500 | unsigned char reg; | |
501 | ||
7427847d MF |
502 | if (!info || !info->hdev) |
503 | /* our irq handler is shared */ | |
504 | return IRQ_NONE; | |
1da177e4 LT |
505 | |
506 | if (!test_bit(CARD_READY, &(info->hw_state))) | |
507 | return IRQ_HANDLED; | |
508 | ||
9a017a91 | 509 | iobase = info->p_dev->resource[0]->start; |
1da177e4 LT |
510 | |
511 | spin_lock(&(info->lock)); | |
512 | ||
513 | /* Disable interrupt */ | |
514 | info->ctrl_reg &= ~REG_CONTROL_INTERRUPT; | |
515 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
516 | ||
517 | reg = inb(iobase + REG_INTERRUPT); | |
518 | ||
519 | if ((reg != 0x00) && (reg != 0xff)) { | |
520 | ||
521 | if (reg & 0x04) { | |
522 | bluecard_receive(info, 0x00); | |
523 | outb(0x04, iobase + REG_INTERRUPT); | |
524 | outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND); | |
525 | } | |
526 | ||
527 | if (reg & 0x08) { | |
528 | bluecard_receive(info, 0x10); | |
529 | outb(0x08, iobase + REG_INTERRUPT); | |
530 | outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND); | |
531 | } | |
532 | ||
533 | if (reg & 0x01) { | |
534 | set_bit(XMIT_BUF_ONE_READY, &(info->tx_state)); | |
535 | outb(0x01, iobase + REG_INTERRUPT); | |
536 | bluecard_write_wakeup(info); | |
537 | } | |
538 | ||
539 | if (reg & 0x02) { | |
540 | set_bit(XMIT_BUF_TWO_READY, &(info->tx_state)); | |
541 | outb(0x02, iobase + REG_INTERRUPT); | |
542 | bluecard_write_wakeup(info); | |
543 | } | |
544 | ||
545 | } | |
546 | ||
547 | /* Enable interrupt */ | |
548 | info->ctrl_reg |= REG_CONTROL_INTERRUPT; | |
549 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
550 | ||
551 | spin_unlock(&(info->lock)); | |
552 | ||
553 | return IRQ_HANDLED; | |
554 | } | |
555 | ||
556 | ||
557 | ||
558 | /* ======================== Device specific HCI commands ======================== */ | |
559 | ||
560 | ||
561 | static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud) | |
562 | { | |
155961e8 | 563 | bluecard_info_t *info = hci_get_drvdata(hdev); |
1da177e4 LT |
564 | struct sk_buff *skb; |
565 | ||
566 | /* Ericsson baud rate command */ | |
567 | unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 }; | |
568 | ||
569 | if (!(skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) { | |
570 | BT_ERR("Can't allocate mem for new packet"); | |
571 | return -1; | |
572 | } | |
573 | ||
574 | switch (baud) { | |
575 | case 460800: | |
576 | cmd[4] = 0x00; | |
0d48d939 | 577 | bt_cb(skb)->pkt_type = PKT_BAUD_RATE_460800; |
1da177e4 LT |
578 | break; |
579 | case 230400: | |
580 | cmd[4] = 0x01; | |
0d48d939 | 581 | bt_cb(skb)->pkt_type = PKT_BAUD_RATE_230400; |
1da177e4 LT |
582 | break; |
583 | case 115200: | |
584 | cmd[4] = 0x02; | |
0d48d939 | 585 | bt_cb(skb)->pkt_type = PKT_BAUD_RATE_115200; |
1da177e4 LT |
586 | break; |
587 | case 57600: | |
588 | /* Fall through... */ | |
589 | default: | |
590 | cmd[4] = 0x03; | |
0d48d939 | 591 | bt_cb(skb)->pkt_type = PKT_BAUD_RATE_57600; |
1da177e4 LT |
592 | break; |
593 | } | |
594 | ||
595 | memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd)); | |
596 | ||
597 | skb_queue_tail(&(info->txq), skb); | |
598 | ||
599 | bluecard_write_wakeup(info); | |
600 | ||
601 | return 0; | |
602 | } | |
603 | ||
604 | ||
605 | ||
606 | /* ======================== HCI interface ======================== */ | |
607 | ||
608 | ||
609 | static int bluecard_hci_flush(struct hci_dev *hdev) | |
610 | { | |
155961e8 | 611 | bluecard_info_t *info = hci_get_drvdata(hdev); |
1da177e4 LT |
612 | |
613 | /* Drop TX queue */ | |
614 | skb_queue_purge(&(info->txq)); | |
615 | ||
616 | return 0; | |
617 | } | |
618 | ||
619 | ||
620 | static int bluecard_hci_open(struct hci_dev *hdev) | |
621 | { | |
155961e8 | 622 | bluecard_info_t *info = hci_get_drvdata(hdev); |
1da177e4 LT |
623 | |
624 | if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) | |
625 | bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE); | |
626 | ||
627 | if (test_and_set_bit(HCI_RUNNING, &(hdev->flags))) | |
628 | return 0; | |
629 | ||
630 | if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) { | |
74ad8fda AE |
631 | unsigned int iobase = info->p_dev->resource[0]->start; |
632 | ||
1da177e4 LT |
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); |
1da177e4 LT |
644 | |
645 | if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags))) | |
646 | return 0; | |
647 | ||
648 | bluecard_hci_flush(hdev); | |
649 | ||
650 | if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) { | |
74ad8fda AE |
651 | unsigned int iobase = info->p_dev->resource[0]->start; |
652 | ||
1da177e4 LT |
653 | /* Disable LED */ |
654 | outb(0x00, iobase + 0x30); | |
655 | } | |
656 | ||
657 | return 0; | |
658 | } | |
659 | ||
660 | ||
7bd8f09f | 661 | static int bluecard_hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 | 662 | { |
3c69454a | 663 | bluecard_info_t *info = hci_get_drvdata(hdev); |
1da177e4 | 664 | |
0d48d939 | 665 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
666 | case HCI_COMMAND_PKT: |
667 | hdev->stat.cmd_tx++; | |
668 | break; | |
669 | case HCI_ACLDATA_PKT: | |
670 | hdev->stat.acl_tx++; | |
671 | break; | |
672 | case HCI_SCODATA_PKT: | |
673 | hdev->stat.sco_tx++; | |
674 | break; | |
ce9b0048 | 675 | } |
1da177e4 LT |
676 | |
677 | /* Prepend skb with frame type */ | |
0d48d939 | 678 | memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1); |
1da177e4 LT |
679 | skb_queue_tail(&(info->txq), skb); |
680 | ||
681 | bluecard_write_wakeup(info); | |
682 | ||
683 | return 0; | |
684 | } | |
685 | ||
686 | ||
1da177e4 LT |
687 | |
688 | /* ======================== Card services HCI interaction ======================== */ | |
689 | ||
690 | ||
691 | static int bluecard_open(bluecard_info_t *info) | |
692 | { | |
9a017a91 | 693 | unsigned int iobase = info->p_dev->resource[0]->start; |
1da177e4 LT |
694 | struct hci_dev *hdev; |
695 | unsigned char id; | |
696 | ||
697 | spin_lock_init(&(info->lock)); | |
698 | ||
699 | init_timer(&(info->timer)); | |
700 | info->timer.function = &bluecard_activity_led_timeout; | |
701 | info->timer.data = (u_long)info; | |
702 | ||
703 | skb_queue_head_init(&(info->txq)); | |
704 | ||
705 | info->rx_state = RECV_WAIT_PACKET_TYPE; | |
706 | info->rx_count = 0; | |
707 | info->rx_skb = NULL; | |
708 | ||
709 | /* Initialize HCI device */ | |
710 | hdev = hci_alloc_dev(); | |
711 | if (!hdev) { | |
712 | BT_ERR("Can't allocate HCI device"); | |
713 | return -ENOMEM; | |
714 | } | |
715 | ||
716 | info->hdev = hdev; | |
717 | ||
c13854ce | 718 | hdev->bus = HCI_PCCARD; |
155961e8 | 719 | hci_set_drvdata(hdev, info); |
27d35284 | 720 | SET_HCIDEV_DEV(hdev, &info->p_dev->dev); |
1da177e4 | 721 | |
87d82ee2 MH |
722 | hdev->open = bluecard_hci_open; |
723 | hdev->close = bluecard_hci_close; | |
724 | hdev->flush = bluecard_hci_flush; | |
725 | hdev->send = bluecard_hci_send_frame; | |
1da177e4 | 726 | |
1da177e4 LT |
727 | id = inb(iobase + 0x30); |
728 | ||
729 | if ((id & 0x0f) == 0x02) | |
730 | set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)); | |
731 | ||
732 | if (id & 0x10) | |
733 | set_bit(CARD_HAS_POWER_LED, &(info->hw_state)); | |
734 | ||
735 | if (id & 0x20) | |
736 | set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state)); | |
737 | ||
738 | /* Reset card */ | |
739 | info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET; | |
740 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
741 | ||
742 | /* Turn FPGA off */ | |
743 | outb(0x80, iobase + 0x30); | |
744 | ||
745 | /* Wait some time */ | |
746 | msleep(10); | |
747 | ||
748 | /* Turn FPGA on */ | |
749 | outb(0x00, iobase + 0x30); | |
750 | ||
751 | /* Activate card */ | |
752 | info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU; | |
753 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
754 | ||
755 | /* Enable interrupt */ | |
756 | outb(0xff, iobase + REG_INTERRUPT); | |
757 | info->ctrl_reg |= REG_CONTROL_INTERRUPT; | |
758 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
759 | ||
760 | if ((id & 0x0f) == 0x03) { | |
761 | /* Disable RTS */ | |
762 | info->ctrl_reg |= REG_CONTROL_RTS; | |
763 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
764 | ||
765 | /* Set baud rate */ | |
766 | info->ctrl_reg |= 0x03; | |
767 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
768 | ||
769 | /* Enable RTS */ | |
770 | info->ctrl_reg &= ~REG_CONTROL_RTS; | |
771 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
772 | ||
773 | set_bit(XMIT_BUF_ONE_READY, &(info->tx_state)); | |
774 | set_bit(XMIT_BUF_TWO_READY, &(info->tx_state)); | |
775 | set_bit(XMIT_SENDING_READY, &(info->tx_state)); | |
776 | } | |
777 | ||
778 | /* Start the RX buffers */ | |
779 | outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND); | |
780 | outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND); | |
781 | ||
782 | /* Signal that the hardware is ready */ | |
783 | set_bit(CARD_READY, &(info->hw_state)); | |
784 | ||
785 | /* Drop TX queue */ | |
786 | skb_queue_purge(&(info->txq)); | |
787 | ||
788 | /* Control the point at which RTS is enabled */ | |
789 | outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL); | |
790 | ||
791 | /* Timeout before it is safe to send the first HCI packet */ | |
792 | msleep(1250); | |
793 | ||
794 | /* Register HCI device */ | |
795 | if (hci_register_dev(hdev) < 0) { | |
796 | BT_ERR("Can't register HCI device"); | |
797 | info->hdev = NULL; | |
798 | hci_free_dev(hdev); | |
799 | return -ENODEV; | |
800 | } | |
801 | ||
802 | return 0; | |
803 | } | |
804 | ||
805 | ||
806 | static int bluecard_close(bluecard_info_t *info) | |
807 | { | |
9a017a91 | 808 | unsigned int iobase = info->p_dev->resource[0]->start; |
1da177e4 LT |
809 | struct hci_dev *hdev = info->hdev; |
810 | ||
811 | if (!hdev) | |
812 | return -ENODEV; | |
813 | ||
814 | bluecard_hci_close(hdev); | |
815 | ||
816 | clear_bit(CARD_READY, &(info->hw_state)); | |
817 | ||
818 | /* Reset card */ | |
819 | info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET; | |
820 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
821 | ||
822 | /* Turn FPGA off */ | |
823 | outb(0x80, iobase + 0x30); | |
824 | ||
13ea4015 | 825 | hci_unregister_dev(hdev); |
1da177e4 LT |
826 | hci_free_dev(hdev); |
827 | ||
828 | return 0; | |
829 | } | |
830 | ||
15b99ac1 | 831 | static int bluecard_probe(struct pcmcia_device *link) |
1da177e4 LT |
832 | { |
833 | bluecard_info_t *info; | |
1da177e4 LT |
834 | |
835 | /* Create new info device */ | |
1a31c602 | 836 | info = devm_kzalloc(&link->dev, sizeof(*info), GFP_KERNEL); |
1da177e4 | 837 | if (!info) |
f8cfa618 | 838 | return -ENOMEM; |
1da177e4 | 839 | |
fba395ee | 840 | info->p_dev = link; |
1da177e4 LT |
841 | link->priv = info; |
842 | ||
1ac71e5a | 843 | link->config_flags |= CONF_ENABLE_IRQ; |
1da177e4 | 844 | |
15b99ac1 | 845 | return bluecard_config(link); |
1da177e4 LT |
846 | } |
847 | ||
848 | ||
fba395ee | 849 | static void bluecard_detach(struct pcmcia_device *link) |
1da177e4 | 850 | { |
e2d40963 | 851 | bluecard_release(link); |
1da177e4 LT |
852 | } |
853 | ||
854 | ||
15b99ac1 | 855 | static int bluecard_config(struct pcmcia_device *link) |
1da177e4 | 856 | { |
1da177e4 | 857 | bluecard_info_t *info = link->priv; |
af2b3b50 | 858 | int i, n; |
1da177e4 | 859 | |
7feabb64 | 860 | link->config_index = 0x20; |
90abdc3b DB |
861 | |
862 | link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; | |
863 | link->resource[0]->end = 64; | |
864 | link->io_lines = 6; | |
1da177e4 LT |
865 | |
866 | for (n = 0; n < 0x400; n += 0x40) { | |
90abdc3b DB |
867 | link->resource[0]->start = n ^ 0x300; |
868 | i = pcmcia_request_io(link); | |
4c89e88b | 869 | if (i == 0) |
1da177e4 LT |
870 | break; |
871 | } | |
872 | ||
9ac3e58c | 873 | if (i != 0) |
1da177e4 | 874 | goto failed; |
1da177e4 | 875 | |
eb14120f | 876 | i = pcmcia_request_irq(link, bluecard_interrupt); |
9ac3e58c | 877 | if (i != 0) |
eb14120f | 878 | goto failed; |
1da177e4 | 879 | |
1ac71e5a | 880 | i = pcmcia_enable_device(link); |
9ac3e58c | 881 | if (i != 0) |
1da177e4 | 882 | goto failed; |
1da177e4 LT |
883 | |
884 | if (bluecard_open(info) != 0) | |
885 | goto failed; | |
886 | ||
15b99ac1 | 887 | return 0; |
1da177e4 | 888 | |
1da177e4 LT |
889 | failed: |
890 | bluecard_release(link); | |
15b99ac1 | 891 | return -ENODEV; |
1da177e4 LT |
892 | } |
893 | ||
894 | ||
fba395ee | 895 | static void bluecard_release(struct pcmcia_device *link) |
1da177e4 LT |
896 | { |
897 | bluecard_info_t *info = link->priv; | |
898 | ||
e2d40963 | 899 | bluecard_close(info); |
1da177e4 LT |
900 | |
901 | del_timer(&(info->timer)); | |
902 | ||
fba395ee | 903 | pcmcia_disable_device(link); |
1da177e4 LT |
904 | } |
905 | ||
25f8f54f | 906 | static const struct pcmcia_device_id bluecard_ids[] = { |
7f70cb6d DB |
907 | PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e), |
908 | PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c), | |
909 | PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab), | |
910 | PCMCIA_DEVICE_NULL | |
911 | }; | |
912 | MODULE_DEVICE_TABLE(pcmcia, bluecard_ids); | |
913 | ||
1da177e4 LT |
914 | static struct pcmcia_driver bluecard_driver = { |
915 | .owner = THIS_MODULE, | |
2e9b981a | 916 | .name = "bluecard_cs", |
15b99ac1 | 917 | .probe = bluecard_probe, |
cc3b4866 | 918 | .remove = bluecard_detach, |
7f70cb6d | 919 | .id_table = bluecard_ids, |
1da177e4 | 920 | }; |
e0c005f4 | 921 | module_pcmcia_driver(bluecard_driver); |