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