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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 | ||
23 | #include <linux/config.h> | |
24 | #include <linux/module.h> | |
25 | ||
26 | #include <linux/kernel.h> | |
27 | #include <linux/init.h> | |
28 | #include <linux/slab.h> | |
29 | #include <linux/types.h> | |
30 | #include <linux/sched.h> | |
31 | #include <linux/delay.h> | |
32 | #include <linux/timer.h> | |
33 | #include <linux/errno.h> | |
34 | #include <linux/ptrace.h> | |
35 | #include <linux/ioport.h> | |
36 | #include <linux/spinlock.h> | |
37 | #include <linux/moduleparam.h> | |
38 | #include <linux/wait.h> | |
39 | ||
40 | #include <linux/skbuff.h> | |
41 | #include <asm/io.h> | |
42 | ||
1da177e4 LT |
43 | #include <pcmcia/cs_types.h> |
44 | #include <pcmcia/cs.h> | |
45 | #include <pcmcia/cistpl.h> | |
46 | #include <pcmcia/ciscode.h> | |
47 | #include <pcmcia/ds.h> | |
48 | #include <pcmcia/cisreg.h> | |
49 | ||
50 | #include <net/bluetooth/bluetooth.h> | |
51 | #include <net/bluetooth/hci_core.h> | |
52 | ||
53 | ||
54 | ||
55 | /* ======================== Module parameters ======================== */ | |
56 | ||
57 | ||
58 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); | |
59 | MODULE_DESCRIPTION("Bluetooth driver for the Anycom BlueCard (LSE039/LSE041)"); | |
60 | MODULE_LICENSE("GPL"); | |
61 | ||
62 | ||
63 | ||
64 | /* ======================== Local structures ======================== */ | |
65 | ||
66 | ||
67 | typedef struct bluecard_info_t { | |
68 | dev_link_t link; | |
69 | dev_node_t node; | |
70 | ||
71 | struct hci_dev *hdev; | |
72 | ||
73 | spinlock_t lock; /* For serializing operations */ | |
74 | struct timer_list timer; /* For LED control */ | |
75 | ||
76 | struct sk_buff_head txq; | |
77 | unsigned long tx_state; | |
78 | ||
79 | unsigned long rx_state; | |
80 | unsigned long rx_count; | |
81 | struct sk_buff *rx_skb; | |
82 | ||
83 | unsigned char ctrl_reg; | |
84 | unsigned long hw_state; /* Status of the hardware and LED control */ | |
85 | } bluecard_info_t; | |
86 | ||
87 | ||
88 | static void bluecard_config(dev_link_t *link); | |
89 | static void bluecard_release(dev_link_t *link); | |
90 | static int bluecard_event(event_t event, int priority, event_callback_args_t *args); | |
91 | ||
92 | static dev_info_t dev_info = "bluecard_cs"; | |
93 | ||
94 | static dev_link_t *bluecard_attach(void); | |
95 | static void bluecard_detach(dev_link_t *); | |
96 | ||
97 | static dev_link_t *dev_list = NULL; | |
98 | ||
99 | ||
100 | /* Default baud rate: 57600, 115200, 230400 or 460800 */ | |
101 | #define DEFAULT_BAUD_RATE 230400 | |
102 | ||
103 | ||
104 | /* Hardware states */ | |
105 | #define CARD_READY 1 | |
106 | #define CARD_HAS_PCCARD_ID 4 | |
107 | #define CARD_HAS_POWER_LED 5 | |
108 | #define CARD_HAS_ACTIVITY_LED 6 | |
109 | ||
110 | /* Transmit states */ | |
111 | #define XMIT_SENDING 1 | |
112 | #define XMIT_WAKEUP 2 | |
113 | #define XMIT_BUFFER_NUMBER 5 /* unset = buffer one, set = buffer two */ | |
114 | #define XMIT_BUF_ONE_READY 6 | |
115 | #define XMIT_BUF_TWO_READY 7 | |
116 | #define XMIT_SENDING_READY 8 | |
117 | ||
118 | /* Receiver states */ | |
119 | #define RECV_WAIT_PACKET_TYPE 0 | |
120 | #define RECV_WAIT_EVENT_HEADER 1 | |
121 | #define RECV_WAIT_ACL_HEADER 2 | |
122 | #define RECV_WAIT_SCO_HEADER 3 | |
123 | #define RECV_WAIT_DATA 4 | |
124 | ||
125 | /* Special packet types */ | |
126 | #define PKT_BAUD_RATE_57600 0x80 | |
127 | #define PKT_BAUD_RATE_115200 0x81 | |
128 | #define PKT_BAUD_RATE_230400 0x82 | |
129 | #define PKT_BAUD_RATE_460800 0x83 | |
130 | ||
131 | ||
132 | /* These are the register offsets */ | |
133 | #define REG_COMMAND 0x20 | |
134 | #define REG_INTERRUPT 0x21 | |
135 | #define REG_CONTROL 0x22 | |
136 | #define REG_RX_CONTROL 0x24 | |
137 | #define REG_CARD_RESET 0x30 | |
138 | #define REG_LED_CTRL 0x30 | |
139 | ||
140 | /* REG_COMMAND */ | |
141 | #define REG_COMMAND_TX_BUF_ONE 0x01 | |
142 | #define REG_COMMAND_TX_BUF_TWO 0x02 | |
143 | #define REG_COMMAND_RX_BUF_ONE 0x04 | |
144 | #define REG_COMMAND_RX_BUF_TWO 0x08 | |
145 | #define REG_COMMAND_RX_WIN_ONE 0x00 | |
146 | #define REG_COMMAND_RX_WIN_TWO 0x10 | |
147 | ||
148 | /* REG_CONTROL */ | |
149 | #define REG_CONTROL_BAUD_RATE_57600 0x00 | |
150 | #define REG_CONTROL_BAUD_RATE_115200 0x01 | |
151 | #define REG_CONTROL_BAUD_RATE_230400 0x02 | |
152 | #define REG_CONTROL_BAUD_RATE_460800 0x03 | |
153 | #define REG_CONTROL_RTS 0x04 | |
154 | #define REG_CONTROL_BT_ON 0x08 | |
155 | #define REG_CONTROL_BT_RESET 0x10 | |
156 | #define REG_CONTROL_BT_RES_PU 0x20 | |
157 | #define REG_CONTROL_INTERRUPT 0x40 | |
158 | #define REG_CONTROL_CARD_RESET 0x80 | |
159 | ||
160 | /* REG_RX_CONTROL */ | |
161 | #define RTS_LEVEL_SHIFT_BITS 0x02 | |
162 | ||
163 | ||
164 | ||
165 | /* ======================== LED handling routines ======================== */ | |
166 | ||
167 | ||
168 | static void bluecard_activity_led_timeout(u_long arg) | |
169 | { | |
170 | bluecard_info_t *info = (bluecard_info_t *)arg; | |
171 | unsigned int iobase = info->link.io.BasePort1; | |
172 | ||
173 | if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) | |
174 | return; | |
175 | ||
176 | if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) { | |
177 | /* Disable activity LED */ | |
178 | outb(0x08 | 0x20, iobase + 0x30); | |
179 | } else { | |
180 | /* Disable power LED */ | |
181 | outb(0x00, iobase + 0x30); | |
182 | } | |
183 | } | |
184 | ||
185 | ||
186 | static void bluecard_enable_activity_led(bluecard_info_t *info) | |
187 | { | |
188 | unsigned int iobase = info->link.io.BasePort1; | |
189 | ||
190 | if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) | |
191 | return; | |
192 | ||
193 | if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) { | |
194 | /* Enable activity LED */ | |
195 | outb(0x10 | 0x40, iobase + 0x30); | |
196 | ||
197 | /* Stop the LED after HZ/4 */ | |
198 | mod_timer(&(info->timer), jiffies + HZ / 4); | |
199 | } else { | |
200 | /* Enable power LED */ | |
201 | outb(0x08 | 0x20, iobase + 0x30); | |
202 | ||
203 | /* Stop the LED after HZ/2 */ | |
204 | mod_timer(&(info->timer), jiffies + HZ / 2); | |
205 | } | |
206 | } | |
207 | ||
208 | ||
209 | ||
210 | /* ======================== Interrupt handling ======================== */ | |
211 | ||
212 | ||
213 | static int bluecard_write(unsigned int iobase, unsigned int offset, __u8 *buf, int len) | |
214 | { | |
215 | int i, actual; | |
216 | ||
217 | actual = (len > 15) ? 15 : len; | |
218 | ||
219 | outb_p(actual, iobase + offset); | |
220 | ||
221 | for (i = 0; i < actual; i++) | |
222 | outb_p(buf[i], iobase + offset + i + 1); | |
223 | ||
224 | return actual; | |
225 | } | |
226 | ||
227 | ||
228 | static void bluecard_write_wakeup(bluecard_info_t *info) | |
229 | { | |
230 | if (!info) { | |
231 | BT_ERR("Unknown device"); | |
232 | return; | |
233 | } | |
234 | ||
235 | if (!test_bit(XMIT_SENDING_READY, &(info->tx_state))) | |
236 | return; | |
237 | ||
238 | if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) { | |
239 | set_bit(XMIT_WAKEUP, &(info->tx_state)); | |
240 | return; | |
241 | } | |
242 | ||
243 | do { | |
244 | register unsigned int iobase = info->link.io.BasePort1; | |
245 | register unsigned int offset; | |
246 | register unsigned char command; | |
247 | register unsigned long ready_bit; | |
248 | register struct sk_buff *skb; | |
249 | register int len; | |
250 | ||
251 | clear_bit(XMIT_WAKEUP, &(info->tx_state)); | |
252 | ||
253 | if (!(info->link.state & DEV_PRESENT)) | |
254 | return; | |
255 | ||
256 | if (test_bit(XMIT_BUFFER_NUMBER, &(info->tx_state))) { | |
257 | if (!test_bit(XMIT_BUF_TWO_READY, &(info->tx_state))) | |
258 | break; | |
259 | offset = 0x10; | |
260 | command = REG_COMMAND_TX_BUF_TWO; | |
261 | ready_bit = XMIT_BUF_TWO_READY; | |
262 | } else { | |
263 | if (!test_bit(XMIT_BUF_ONE_READY, &(info->tx_state))) | |
264 | break; | |
265 | offset = 0x00; | |
266 | command = REG_COMMAND_TX_BUF_ONE; | |
267 | ready_bit = XMIT_BUF_ONE_READY; | |
268 | } | |
269 | ||
270 | if (!(skb = skb_dequeue(&(info->txq)))) | |
271 | break; | |
272 | ||
273 | if (skb->pkt_type & 0x80) { | |
274 | /* Disable RTS */ | |
275 | info->ctrl_reg |= REG_CONTROL_RTS; | |
276 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
277 | } | |
278 | ||
279 | /* Activate LED */ | |
280 | bluecard_enable_activity_led(info); | |
281 | ||
282 | /* Send frame */ | |
283 | len = bluecard_write(iobase, offset, skb->data, skb->len); | |
284 | ||
285 | /* Tell the FPGA to send the data */ | |
286 | outb_p(command, iobase + REG_COMMAND); | |
287 | ||
288 | /* Mark the buffer as dirty */ | |
289 | clear_bit(ready_bit, &(info->tx_state)); | |
290 | ||
291 | if (skb->pkt_type & 0x80) { | |
292 | DECLARE_WAIT_QUEUE_HEAD(wq); | |
293 | DEFINE_WAIT(wait); | |
294 | ||
295 | unsigned char baud_reg; | |
296 | ||
297 | switch (skb->pkt_type) { | |
298 | case PKT_BAUD_RATE_460800: | |
299 | baud_reg = REG_CONTROL_BAUD_RATE_460800; | |
300 | break; | |
301 | case PKT_BAUD_RATE_230400: | |
302 | baud_reg = REG_CONTROL_BAUD_RATE_230400; | |
303 | break; | |
304 | case PKT_BAUD_RATE_115200: | |
305 | baud_reg = REG_CONTROL_BAUD_RATE_115200; | |
306 | break; | |
307 | case PKT_BAUD_RATE_57600: | |
308 | /* Fall through... */ | |
309 | default: | |
310 | baud_reg = REG_CONTROL_BAUD_RATE_57600; | |
311 | break; | |
312 | } | |
313 | ||
314 | /* Wait until the command reaches the baseband */ | |
315 | prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE); | |
316 | schedule_timeout(HZ/10); | |
317 | finish_wait(&wq, &wait); | |
318 | ||
319 | /* Set baud on baseband */ | |
320 | info->ctrl_reg &= ~0x03; | |
321 | info->ctrl_reg |= baud_reg; | |
322 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
323 | ||
324 | /* Enable RTS */ | |
325 | info->ctrl_reg &= ~REG_CONTROL_RTS; | |
326 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
327 | ||
328 | /* Wait before the next HCI packet can be send */ | |
329 | prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE); | |
330 | schedule_timeout(HZ); | |
331 | finish_wait(&wq, &wait); | |
332 | } | |
333 | ||
334 | if (len == skb->len) { | |
335 | kfree_skb(skb); | |
336 | } else { | |
337 | skb_pull(skb, len); | |
338 | skb_queue_head(&(info->txq), skb); | |
339 | } | |
340 | ||
341 | info->hdev->stat.byte_tx += len; | |
342 | ||
343 | /* Change buffer */ | |
344 | change_bit(XMIT_BUFFER_NUMBER, &(info->tx_state)); | |
345 | ||
346 | } while (test_bit(XMIT_WAKEUP, &(info->tx_state))); | |
347 | ||
348 | clear_bit(XMIT_SENDING, &(info->tx_state)); | |
349 | } | |
350 | ||
351 | ||
352 | static int bluecard_read(unsigned int iobase, unsigned int offset, __u8 *buf, int size) | |
353 | { | |
354 | int i, n, len; | |
355 | ||
356 | outb(REG_COMMAND_RX_WIN_ONE, iobase + REG_COMMAND); | |
357 | ||
358 | len = inb(iobase + offset); | |
359 | n = 0; | |
360 | i = 1; | |
361 | ||
362 | while (n < len) { | |
363 | ||
364 | if (i == 16) { | |
365 | outb(REG_COMMAND_RX_WIN_TWO, iobase + REG_COMMAND); | |
366 | i = 0; | |
367 | } | |
368 | ||
369 | buf[n] = inb(iobase + offset + i); | |
370 | ||
371 | n++; | |
372 | i++; | |
373 | ||
374 | } | |
375 | ||
376 | return len; | |
377 | } | |
378 | ||
379 | ||
380 | static void bluecard_receive(bluecard_info_t *info, unsigned int offset) | |
381 | { | |
382 | unsigned int iobase; | |
383 | unsigned char buf[31]; | |
384 | int i, len; | |
385 | ||
386 | if (!info) { | |
387 | BT_ERR("Unknown device"); | |
388 | return; | |
389 | } | |
390 | ||
391 | iobase = info->link.io.BasePort1; | |
392 | ||
393 | if (test_bit(XMIT_SENDING_READY, &(info->tx_state))) | |
394 | bluecard_enable_activity_led(info); | |
395 | ||
396 | len = bluecard_read(iobase, offset, buf, sizeof(buf)); | |
397 | ||
398 | for (i = 0; i < len; i++) { | |
399 | ||
400 | /* Allocate packet */ | |
401 | if (info->rx_skb == NULL) { | |
402 | info->rx_state = RECV_WAIT_PACKET_TYPE; | |
403 | info->rx_count = 0; | |
404 | if (!(info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) { | |
405 | BT_ERR("Can't allocate mem for new packet"); | |
406 | return; | |
407 | } | |
408 | } | |
409 | ||
410 | if (info->rx_state == RECV_WAIT_PACKET_TYPE) { | |
411 | ||
412 | info->rx_skb->dev = (void *) info->hdev; | |
413 | info->rx_skb->pkt_type = buf[i]; | |
414 | ||
415 | switch (info->rx_skb->pkt_type) { | |
416 | ||
417 | case 0x00: | |
418 | /* init packet */ | |
419 | if (offset != 0x00) { | |
420 | set_bit(XMIT_BUF_ONE_READY, &(info->tx_state)); | |
421 | set_bit(XMIT_BUF_TWO_READY, &(info->tx_state)); | |
422 | set_bit(XMIT_SENDING_READY, &(info->tx_state)); | |
423 | bluecard_write_wakeup(info); | |
424 | } | |
425 | ||
426 | kfree_skb(info->rx_skb); | |
427 | info->rx_skb = NULL; | |
428 | break; | |
429 | ||
430 | case HCI_EVENT_PKT: | |
431 | info->rx_state = RECV_WAIT_EVENT_HEADER; | |
432 | info->rx_count = HCI_EVENT_HDR_SIZE; | |
433 | break; | |
434 | ||
435 | case HCI_ACLDATA_PKT: | |
436 | info->rx_state = RECV_WAIT_ACL_HEADER; | |
437 | info->rx_count = HCI_ACL_HDR_SIZE; | |
438 | break; | |
439 | ||
440 | case HCI_SCODATA_PKT: | |
441 | info->rx_state = RECV_WAIT_SCO_HEADER; | |
442 | info->rx_count = HCI_SCO_HDR_SIZE; | |
443 | break; | |
444 | ||
445 | default: | |
446 | /* unknown packet */ | |
447 | BT_ERR("Unknown HCI packet with type 0x%02x received", info->rx_skb->pkt_type); | |
448 | info->hdev->stat.err_rx++; | |
449 | ||
450 | kfree_skb(info->rx_skb); | |
451 | info->rx_skb = NULL; | |
452 | break; | |
453 | ||
454 | } | |
455 | ||
456 | } else { | |
457 | ||
458 | *skb_put(info->rx_skb, 1) = buf[i]; | |
459 | info->rx_count--; | |
460 | ||
461 | if (info->rx_count == 0) { | |
462 | ||
463 | int dlen; | |
464 | struct hci_event_hdr *eh; | |
465 | struct hci_acl_hdr *ah; | |
466 | struct hci_sco_hdr *sh; | |
467 | ||
468 | switch (info->rx_state) { | |
469 | ||
470 | case RECV_WAIT_EVENT_HEADER: | |
471 | eh = (struct hci_event_hdr *)(info->rx_skb->data); | |
472 | info->rx_state = RECV_WAIT_DATA; | |
473 | info->rx_count = eh->plen; | |
474 | break; | |
475 | ||
476 | case RECV_WAIT_ACL_HEADER: | |
477 | ah = (struct hci_acl_hdr *)(info->rx_skb->data); | |
478 | dlen = __le16_to_cpu(ah->dlen); | |
479 | info->rx_state = RECV_WAIT_DATA; | |
480 | info->rx_count = dlen; | |
481 | break; | |
482 | ||
483 | case RECV_WAIT_SCO_HEADER: | |
484 | sh = (struct hci_sco_hdr *)(info->rx_skb->data); | |
485 | info->rx_state = RECV_WAIT_DATA; | |
486 | info->rx_count = sh->dlen; | |
487 | break; | |
488 | ||
489 | case RECV_WAIT_DATA: | |
490 | hci_recv_frame(info->rx_skb); | |
491 | info->rx_skb = NULL; | |
492 | break; | |
493 | ||
494 | } | |
495 | ||
496 | } | |
497 | ||
498 | } | |
499 | ||
500 | ||
501 | } | |
502 | ||
503 | info->hdev->stat.byte_rx += len; | |
504 | } | |
505 | ||
506 | ||
507 | static irqreturn_t bluecard_interrupt(int irq, void *dev_inst, struct pt_regs *regs) | |
508 | { | |
509 | bluecard_info_t *info = dev_inst; | |
510 | unsigned int iobase; | |
511 | unsigned char reg; | |
512 | ||
513 | if (!info || !info->hdev) { | |
514 | BT_ERR("Call of irq %d for unknown device", irq); | |
515 | return IRQ_NONE; | |
516 | } | |
517 | ||
518 | if (!test_bit(CARD_READY, &(info->hw_state))) | |
519 | return IRQ_HANDLED; | |
520 | ||
521 | iobase = info->link.io.BasePort1; | |
522 | ||
523 | spin_lock(&(info->lock)); | |
524 | ||
525 | /* Disable interrupt */ | |
526 | info->ctrl_reg &= ~REG_CONTROL_INTERRUPT; | |
527 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
528 | ||
529 | reg = inb(iobase + REG_INTERRUPT); | |
530 | ||
531 | if ((reg != 0x00) && (reg != 0xff)) { | |
532 | ||
533 | if (reg & 0x04) { | |
534 | bluecard_receive(info, 0x00); | |
535 | outb(0x04, iobase + REG_INTERRUPT); | |
536 | outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND); | |
537 | } | |
538 | ||
539 | if (reg & 0x08) { | |
540 | bluecard_receive(info, 0x10); | |
541 | outb(0x08, iobase + REG_INTERRUPT); | |
542 | outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND); | |
543 | } | |
544 | ||
545 | if (reg & 0x01) { | |
546 | set_bit(XMIT_BUF_ONE_READY, &(info->tx_state)); | |
547 | outb(0x01, iobase + REG_INTERRUPT); | |
548 | bluecard_write_wakeup(info); | |
549 | } | |
550 | ||
551 | if (reg & 0x02) { | |
552 | set_bit(XMIT_BUF_TWO_READY, &(info->tx_state)); | |
553 | outb(0x02, iobase + REG_INTERRUPT); | |
554 | bluecard_write_wakeup(info); | |
555 | } | |
556 | ||
557 | } | |
558 | ||
559 | /* Enable interrupt */ | |
560 | info->ctrl_reg |= REG_CONTROL_INTERRUPT; | |
561 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
562 | ||
563 | spin_unlock(&(info->lock)); | |
564 | ||
565 | return IRQ_HANDLED; | |
566 | } | |
567 | ||
568 | ||
569 | ||
570 | /* ======================== Device specific HCI commands ======================== */ | |
571 | ||
572 | ||
573 | static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud) | |
574 | { | |
575 | bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data); | |
576 | struct sk_buff *skb; | |
577 | ||
578 | /* Ericsson baud rate command */ | |
579 | unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 }; | |
580 | ||
581 | if (!(skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) { | |
582 | BT_ERR("Can't allocate mem for new packet"); | |
583 | return -1; | |
584 | } | |
585 | ||
586 | switch (baud) { | |
587 | case 460800: | |
588 | cmd[4] = 0x00; | |
589 | skb->pkt_type = PKT_BAUD_RATE_460800; | |
590 | break; | |
591 | case 230400: | |
592 | cmd[4] = 0x01; | |
593 | skb->pkt_type = PKT_BAUD_RATE_230400; | |
594 | break; | |
595 | case 115200: | |
596 | cmd[4] = 0x02; | |
597 | skb->pkt_type = PKT_BAUD_RATE_115200; | |
598 | break; | |
599 | case 57600: | |
600 | /* Fall through... */ | |
601 | default: | |
602 | cmd[4] = 0x03; | |
603 | skb->pkt_type = PKT_BAUD_RATE_57600; | |
604 | break; | |
605 | } | |
606 | ||
607 | memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd)); | |
608 | ||
609 | skb_queue_tail(&(info->txq), skb); | |
610 | ||
611 | bluecard_write_wakeup(info); | |
612 | ||
613 | return 0; | |
614 | } | |
615 | ||
616 | ||
617 | ||
618 | /* ======================== HCI interface ======================== */ | |
619 | ||
620 | ||
621 | static int bluecard_hci_flush(struct hci_dev *hdev) | |
622 | { | |
623 | bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data); | |
624 | ||
625 | /* Drop TX queue */ | |
626 | skb_queue_purge(&(info->txq)); | |
627 | ||
628 | return 0; | |
629 | } | |
630 | ||
631 | ||
632 | static int bluecard_hci_open(struct hci_dev *hdev) | |
633 | { | |
634 | bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data); | |
635 | unsigned int iobase = info->link.io.BasePort1; | |
636 | ||
637 | if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) | |
638 | bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE); | |
639 | ||
640 | if (test_and_set_bit(HCI_RUNNING, &(hdev->flags))) | |
641 | return 0; | |
642 | ||
643 | if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) { | |
644 | /* Enable LED */ | |
645 | outb(0x08 | 0x20, iobase + 0x30); | |
646 | } | |
647 | ||
648 | return 0; | |
649 | } | |
650 | ||
651 | ||
652 | static int bluecard_hci_close(struct hci_dev *hdev) | |
653 | { | |
654 | bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data); | |
655 | unsigned int iobase = info->link.io.BasePort1; | |
656 | ||
657 | if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags))) | |
658 | return 0; | |
659 | ||
660 | bluecard_hci_flush(hdev); | |
661 | ||
662 | if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) { | |
663 | /* Disable LED */ | |
664 | outb(0x00, iobase + 0x30); | |
665 | } | |
666 | ||
667 | return 0; | |
668 | } | |
669 | ||
670 | ||
671 | static int bluecard_hci_send_frame(struct sk_buff *skb) | |
672 | { | |
673 | bluecard_info_t *info; | |
674 | struct hci_dev *hdev = (struct hci_dev *)(skb->dev); | |
675 | ||
676 | if (!hdev) { | |
677 | BT_ERR("Frame for unknown HCI device (hdev=NULL)"); | |
678 | return -ENODEV; | |
679 | } | |
680 | ||
681 | info = (bluecard_info_t *)(hdev->driver_data); | |
682 | ||
683 | switch (skb->pkt_type) { | |
684 | case HCI_COMMAND_PKT: | |
685 | hdev->stat.cmd_tx++; | |
686 | break; | |
687 | case HCI_ACLDATA_PKT: | |
688 | hdev->stat.acl_tx++; | |
689 | break; | |
690 | case HCI_SCODATA_PKT: | |
691 | hdev->stat.sco_tx++; | |
692 | break; | |
693 | }; | |
694 | ||
695 | /* Prepend skb with frame type */ | |
696 | memcpy(skb_push(skb, 1), &(skb->pkt_type), 1); | |
697 | skb_queue_tail(&(info->txq), skb); | |
698 | ||
699 | bluecard_write_wakeup(info); | |
700 | ||
701 | return 0; | |
702 | } | |
703 | ||
704 | ||
705 | static void bluecard_hci_destruct(struct hci_dev *hdev) | |
706 | { | |
707 | } | |
708 | ||
709 | ||
710 | static int bluecard_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg) | |
711 | { | |
712 | return -ENOIOCTLCMD; | |
713 | } | |
714 | ||
715 | ||
716 | ||
717 | /* ======================== Card services HCI interaction ======================== */ | |
718 | ||
719 | ||
720 | static int bluecard_open(bluecard_info_t *info) | |
721 | { | |
722 | unsigned int iobase = info->link.io.BasePort1; | |
723 | struct hci_dev *hdev; | |
724 | unsigned char id; | |
725 | ||
726 | spin_lock_init(&(info->lock)); | |
727 | ||
728 | init_timer(&(info->timer)); | |
729 | info->timer.function = &bluecard_activity_led_timeout; | |
730 | info->timer.data = (u_long)info; | |
731 | ||
732 | skb_queue_head_init(&(info->txq)); | |
733 | ||
734 | info->rx_state = RECV_WAIT_PACKET_TYPE; | |
735 | info->rx_count = 0; | |
736 | info->rx_skb = NULL; | |
737 | ||
738 | /* Initialize HCI device */ | |
739 | hdev = hci_alloc_dev(); | |
740 | if (!hdev) { | |
741 | BT_ERR("Can't allocate HCI device"); | |
742 | return -ENOMEM; | |
743 | } | |
744 | ||
745 | info->hdev = hdev; | |
746 | ||
747 | hdev->type = HCI_PCCARD; | |
748 | hdev->driver_data = info; | |
749 | ||
750 | hdev->open = bluecard_hci_open; | |
751 | hdev->close = bluecard_hci_close; | |
752 | hdev->flush = bluecard_hci_flush; | |
753 | hdev->send = bluecard_hci_send_frame; | |
754 | hdev->destruct = bluecard_hci_destruct; | |
755 | hdev->ioctl = bluecard_hci_ioctl; | |
756 | ||
757 | hdev->owner = THIS_MODULE; | |
758 | ||
759 | id = inb(iobase + 0x30); | |
760 | ||
761 | if ((id & 0x0f) == 0x02) | |
762 | set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)); | |
763 | ||
764 | if (id & 0x10) | |
765 | set_bit(CARD_HAS_POWER_LED, &(info->hw_state)); | |
766 | ||
767 | if (id & 0x20) | |
768 | set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state)); | |
769 | ||
770 | /* Reset card */ | |
771 | info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET; | |
772 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
773 | ||
774 | /* Turn FPGA off */ | |
775 | outb(0x80, iobase + 0x30); | |
776 | ||
777 | /* Wait some time */ | |
778 | msleep(10); | |
779 | ||
780 | /* Turn FPGA on */ | |
781 | outb(0x00, iobase + 0x30); | |
782 | ||
783 | /* Activate card */ | |
784 | info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU; | |
785 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
786 | ||
787 | /* Enable interrupt */ | |
788 | outb(0xff, iobase + REG_INTERRUPT); | |
789 | info->ctrl_reg |= REG_CONTROL_INTERRUPT; | |
790 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
791 | ||
792 | if ((id & 0x0f) == 0x03) { | |
793 | /* Disable RTS */ | |
794 | info->ctrl_reg |= REG_CONTROL_RTS; | |
795 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
796 | ||
797 | /* Set baud rate */ | |
798 | info->ctrl_reg |= 0x03; | |
799 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
800 | ||
801 | /* Enable RTS */ | |
802 | info->ctrl_reg &= ~REG_CONTROL_RTS; | |
803 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
804 | ||
805 | set_bit(XMIT_BUF_ONE_READY, &(info->tx_state)); | |
806 | set_bit(XMIT_BUF_TWO_READY, &(info->tx_state)); | |
807 | set_bit(XMIT_SENDING_READY, &(info->tx_state)); | |
808 | } | |
809 | ||
810 | /* Start the RX buffers */ | |
811 | outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND); | |
812 | outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND); | |
813 | ||
814 | /* Signal that the hardware is ready */ | |
815 | set_bit(CARD_READY, &(info->hw_state)); | |
816 | ||
817 | /* Drop TX queue */ | |
818 | skb_queue_purge(&(info->txq)); | |
819 | ||
820 | /* Control the point at which RTS is enabled */ | |
821 | outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL); | |
822 | ||
823 | /* Timeout before it is safe to send the first HCI packet */ | |
824 | msleep(1250); | |
825 | ||
826 | /* Register HCI device */ | |
827 | if (hci_register_dev(hdev) < 0) { | |
828 | BT_ERR("Can't register HCI device"); | |
829 | info->hdev = NULL; | |
830 | hci_free_dev(hdev); | |
831 | return -ENODEV; | |
832 | } | |
833 | ||
834 | return 0; | |
835 | } | |
836 | ||
837 | ||
838 | static int bluecard_close(bluecard_info_t *info) | |
839 | { | |
840 | unsigned int iobase = info->link.io.BasePort1; | |
841 | struct hci_dev *hdev = info->hdev; | |
842 | ||
843 | if (!hdev) | |
844 | return -ENODEV; | |
845 | ||
846 | bluecard_hci_close(hdev); | |
847 | ||
848 | clear_bit(CARD_READY, &(info->hw_state)); | |
849 | ||
850 | /* Reset card */ | |
851 | info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET; | |
852 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
853 | ||
854 | /* Turn FPGA off */ | |
855 | outb(0x80, iobase + 0x30); | |
856 | ||
857 | if (hci_unregister_dev(hdev) < 0) | |
858 | BT_ERR("Can't unregister HCI device %s", hdev->name); | |
859 | ||
860 | hci_free_dev(hdev); | |
861 | ||
862 | return 0; | |
863 | } | |
864 | ||
865 | static dev_link_t *bluecard_attach(void) | |
866 | { | |
867 | bluecard_info_t *info; | |
868 | client_reg_t client_reg; | |
869 | dev_link_t *link; | |
870 | int ret; | |
871 | ||
872 | /* Create new info device */ | |
873 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
874 | if (!info) | |
875 | return NULL; | |
876 | memset(info, 0, sizeof(*info)); | |
877 | ||
878 | link = &info->link; | |
879 | link->priv = info; | |
880 | ||
881 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_8; | |
882 | link->io.NumPorts1 = 8; | |
883 | link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT; | |
884 | link->irq.IRQInfo1 = IRQ_LEVEL_ID; | |
885 | ||
886 | link->irq.Handler = bluecard_interrupt; | |
887 | link->irq.Instance = info; | |
888 | ||
889 | link->conf.Attributes = CONF_ENABLE_IRQ; | |
890 | link->conf.Vcc = 50; | |
891 | link->conf.IntType = INT_MEMORY_AND_IO; | |
892 | ||
893 | /* Register with Card Services */ | |
894 | link->next = dev_list; | |
895 | dev_list = link; | |
896 | client_reg.dev_info = &dev_info; | |
1da177e4 LT |
897 | client_reg.Version = 0x0210; |
898 | client_reg.event_callback_args.client_data = link; | |
899 | ||
900 | ret = pcmcia_register_client(&link->handle, &client_reg); | |
901 | if (ret != CS_SUCCESS) { | |
902 | cs_error(link->handle, RegisterClient, ret); | |
903 | bluecard_detach(link); | |
904 | return NULL; | |
905 | } | |
906 | ||
907 | return link; | |
908 | } | |
909 | ||
910 | ||
911 | static void bluecard_detach(dev_link_t *link) | |
912 | { | |
913 | bluecard_info_t *info = link->priv; | |
914 | dev_link_t **linkp; | |
915 | int ret; | |
916 | ||
917 | /* Locate device structure */ | |
918 | for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next) | |
919 | if (*linkp == link) | |
920 | break; | |
921 | ||
922 | if (*linkp == NULL) | |
923 | return; | |
924 | ||
925 | if (link->state & DEV_CONFIG) | |
926 | bluecard_release(link); | |
927 | ||
928 | if (link->handle) { | |
929 | ret = pcmcia_deregister_client(link->handle); | |
930 | if (ret != CS_SUCCESS) | |
931 | cs_error(link->handle, DeregisterClient, ret); | |
932 | } | |
933 | ||
934 | /* Unlink device structure, free bits */ | |
935 | *linkp = link->next; | |
936 | ||
937 | kfree(info); | |
938 | } | |
939 | ||
940 | ||
941 | static int first_tuple(client_handle_t handle, tuple_t *tuple, cisparse_t *parse) | |
942 | { | |
943 | int i; | |
944 | ||
945 | i = pcmcia_get_first_tuple(handle, tuple); | |
946 | if (i != CS_SUCCESS) | |
947 | return CS_NO_MORE_ITEMS; | |
948 | ||
949 | i = pcmcia_get_tuple_data(handle, tuple); | |
950 | if (i != CS_SUCCESS) | |
951 | return i; | |
952 | ||
953 | return pcmcia_parse_tuple(handle, tuple, parse); | |
954 | } | |
955 | ||
956 | static void bluecard_config(dev_link_t *link) | |
957 | { | |
958 | client_handle_t handle = link->handle; | |
959 | bluecard_info_t *info = link->priv; | |
960 | tuple_t tuple; | |
961 | u_short buf[256]; | |
962 | cisparse_t parse; | |
963 | config_info_t config; | |
964 | int i, n, last_ret, last_fn; | |
965 | ||
966 | tuple.TupleData = (cisdata_t *)buf; | |
967 | tuple.TupleOffset = 0; | |
968 | tuple.TupleDataMax = 255; | |
969 | tuple.Attributes = 0; | |
970 | ||
971 | /* Get configuration register information */ | |
972 | tuple.DesiredTuple = CISTPL_CONFIG; | |
973 | last_ret = first_tuple(handle, &tuple, &parse); | |
974 | if (last_ret != CS_SUCCESS) { | |
975 | last_fn = ParseTuple; | |
976 | goto cs_failed; | |
977 | } | |
978 | link->conf.ConfigBase = parse.config.base; | |
979 | link->conf.Present = parse.config.rmask[0]; | |
980 | ||
981 | /* Configure card */ | |
982 | link->state |= DEV_CONFIG; | |
983 | i = pcmcia_get_configuration_info(handle, &config); | |
984 | link->conf.Vcc = config.Vcc; | |
985 | ||
986 | link->conf.ConfigIndex = 0x20; | |
987 | link->io.NumPorts1 = 64; | |
988 | link->io.IOAddrLines = 6; | |
989 | ||
990 | for (n = 0; n < 0x400; n += 0x40) { | |
991 | link->io.BasePort1 = n ^ 0x300; | |
992 | i = pcmcia_request_io(link->handle, &link->io); | |
993 | if (i == CS_SUCCESS) | |
994 | break; | |
995 | } | |
996 | ||
997 | if (i != CS_SUCCESS) { | |
998 | cs_error(link->handle, RequestIO, i); | |
999 | goto failed; | |
1000 | } | |
1001 | ||
1002 | i = pcmcia_request_irq(link->handle, &link->irq); | |
1003 | if (i != CS_SUCCESS) { | |
1004 | cs_error(link->handle, RequestIRQ, i); | |
1005 | link->irq.AssignedIRQ = 0; | |
1006 | } | |
1007 | ||
1008 | i = pcmcia_request_configuration(link->handle, &link->conf); | |
1009 | if (i != CS_SUCCESS) { | |
1010 | cs_error(link->handle, RequestConfiguration, i); | |
1011 | goto failed; | |
1012 | } | |
1013 | ||
1014 | if (bluecard_open(info) != 0) | |
1015 | goto failed; | |
1016 | ||
1017 | strcpy(info->node.dev_name, info->hdev->name); | |
1018 | link->dev = &info->node; | |
1019 | link->state &= ~DEV_CONFIG_PENDING; | |
1020 | ||
1021 | return; | |
1022 | ||
1023 | cs_failed: | |
1024 | cs_error(link->handle, last_fn, last_ret); | |
1025 | ||
1026 | failed: | |
1027 | bluecard_release(link); | |
1028 | } | |
1029 | ||
1030 | ||
1031 | static void bluecard_release(dev_link_t *link) | |
1032 | { | |
1033 | bluecard_info_t *info = link->priv; | |
1034 | ||
1035 | if (link->state & DEV_PRESENT) | |
1036 | bluecard_close(info); | |
1037 | ||
1038 | del_timer(&(info->timer)); | |
1039 | ||
1040 | link->dev = NULL; | |
1041 | ||
1042 | pcmcia_release_configuration(link->handle); | |
1043 | pcmcia_release_io(link->handle, &link->io); | |
1044 | pcmcia_release_irq(link->handle, &link->irq); | |
1045 | ||
1046 | link->state &= ~DEV_CONFIG; | |
1047 | } | |
1048 | ||
1049 | ||
1050 | static int bluecard_event(event_t event, int priority, event_callback_args_t *args) | |
1051 | { | |
1052 | dev_link_t *link = args->client_data; | |
1053 | bluecard_info_t *info = link->priv; | |
1054 | ||
1055 | switch (event) { | |
1056 | case CS_EVENT_CARD_REMOVAL: | |
1057 | link->state &= ~DEV_PRESENT; | |
1058 | if (link->state & DEV_CONFIG) { | |
1059 | bluecard_close(info); | |
1060 | bluecard_release(link); | |
1061 | } | |
1062 | break; | |
1063 | case CS_EVENT_CARD_INSERTION: | |
1064 | link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; | |
1065 | bluecard_config(link); | |
1066 | break; | |
1067 | case CS_EVENT_PM_SUSPEND: | |
1068 | link->state |= DEV_SUSPEND; | |
1069 | /* Fall through... */ | |
1070 | case CS_EVENT_RESET_PHYSICAL: | |
1071 | if (link->state & DEV_CONFIG) | |
1072 | pcmcia_release_configuration(link->handle); | |
1073 | break; | |
1074 | case CS_EVENT_PM_RESUME: | |
1075 | link->state &= ~DEV_SUSPEND; | |
1076 | /* Fall through... */ | |
1077 | case CS_EVENT_CARD_RESET: | |
1078 | if (DEV_OK(link)) | |
1079 | pcmcia_request_configuration(link->handle, &link->conf); | |
1080 | break; | |
1081 | } | |
1082 | ||
1083 | return 0; | |
1084 | } | |
1085 | ||
7f70cb6d DB |
1086 | static struct pcmcia_device_id bluecard_ids[] = { |
1087 | PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e), | |
1088 | PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c), | |
1089 | PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab), | |
1090 | PCMCIA_DEVICE_NULL | |
1091 | }; | |
1092 | MODULE_DEVICE_TABLE(pcmcia, bluecard_ids); | |
1093 | ||
1da177e4 LT |
1094 | static struct pcmcia_driver bluecard_driver = { |
1095 | .owner = THIS_MODULE, | |
1096 | .drv = { | |
1097 | .name = "bluecard_cs", | |
1098 | }, | |
1099 | .attach = bluecard_attach, | |
1e212f36 | 1100 | .event = bluecard_event, |
1da177e4 | 1101 | .detach = bluecard_detach, |
7f70cb6d | 1102 | .id_table = bluecard_ids, |
1da177e4 LT |
1103 | }; |
1104 | ||
1105 | static int __init init_bluecard_cs(void) | |
1106 | { | |
1107 | return pcmcia_register_driver(&bluecard_driver); | |
1108 | } | |
1109 | ||
1110 | ||
1111 | static void __exit exit_bluecard_cs(void) | |
1112 | { | |
1113 | pcmcia_unregister_driver(&bluecard_driver); | |
1114 | BUG_ON(dev_list != NULL); | |
1115 | } | |
1116 | ||
1117 | module_init(init_bluecard_cs); | |
1118 | module_exit(exit_bluecard_cs); |