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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); | |
cc3b4866 | 95 | static void bluecard_detach(struct pcmcia_device *p_dev); |
1da177e4 | 96 | |
1da177e4 LT |
97 | |
98 | /* Default baud rate: 57600, 115200, 230400 or 460800 */ | |
99 | #define DEFAULT_BAUD_RATE 230400 | |
100 | ||
101 | ||
102 | /* Hardware states */ | |
103 | #define CARD_READY 1 | |
104 | #define CARD_HAS_PCCARD_ID 4 | |
105 | #define CARD_HAS_POWER_LED 5 | |
106 | #define CARD_HAS_ACTIVITY_LED 6 | |
107 | ||
108 | /* Transmit states */ | |
109 | #define XMIT_SENDING 1 | |
110 | #define XMIT_WAKEUP 2 | |
111 | #define XMIT_BUFFER_NUMBER 5 /* unset = buffer one, set = buffer two */ | |
112 | #define XMIT_BUF_ONE_READY 6 | |
113 | #define XMIT_BUF_TWO_READY 7 | |
114 | #define XMIT_SENDING_READY 8 | |
115 | ||
116 | /* Receiver states */ | |
117 | #define RECV_WAIT_PACKET_TYPE 0 | |
118 | #define RECV_WAIT_EVENT_HEADER 1 | |
119 | #define RECV_WAIT_ACL_HEADER 2 | |
120 | #define RECV_WAIT_SCO_HEADER 3 | |
121 | #define RECV_WAIT_DATA 4 | |
122 | ||
123 | /* Special packet types */ | |
124 | #define PKT_BAUD_RATE_57600 0x80 | |
125 | #define PKT_BAUD_RATE_115200 0x81 | |
126 | #define PKT_BAUD_RATE_230400 0x82 | |
127 | #define PKT_BAUD_RATE_460800 0x83 | |
128 | ||
129 | ||
130 | /* These are the register offsets */ | |
131 | #define REG_COMMAND 0x20 | |
132 | #define REG_INTERRUPT 0x21 | |
133 | #define REG_CONTROL 0x22 | |
134 | #define REG_RX_CONTROL 0x24 | |
135 | #define REG_CARD_RESET 0x30 | |
136 | #define REG_LED_CTRL 0x30 | |
137 | ||
138 | /* REG_COMMAND */ | |
139 | #define REG_COMMAND_TX_BUF_ONE 0x01 | |
140 | #define REG_COMMAND_TX_BUF_TWO 0x02 | |
141 | #define REG_COMMAND_RX_BUF_ONE 0x04 | |
142 | #define REG_COMMAND_RX_BUF_TWO 0x08 | |
143 | #define REG_COMMAND_RX_WIN_ONE 0x00 | |
144 | #define REG_COMMAND_RX_WIN_TWO 0x10 | |
145 | ||
146 | /* REG_CONTROL */ | |
147 | #define REG_CONTROL_BAUD_RATE_57600 0x00 | |
148 | #define REG_CONTROL_BAUD_RATE_115200 0x01 | |
149 | #define REG_CONTROL_BAUD_RATE_230400 0x02 | |
150 | #define REG_CONTROL_BAUD_RATE_460800 0x03 | |
151 | #define REG_CONTROL_RTS 0x04 | |
152 | #define REG_CONTROL_BT_ON 0x08 | |
153 | #define REG_CONTROL_BT_RESET 0x10 | |
154 | #define REG_CONTROL_BT_RES_PU 0x20 | |
155 | #define REG_CONTROL_INTERRUPT 0x40 | |
156 | #define REG_CONTROL_CARD_RESET 0x80 | |
157 | ||
158 | /* REG_RX_CONTROL */ | |
159 | #define RTS_LEVEL_SHIFT_BITS 0x02 | |
160 | ||
161 | ||
162 | ||
163 | /* ======================== LED handling routines ======================== */ | |
164 | ||
165 | ||
166 | static void bluecard_activity_led_timeout(u_long arg) | |
167 | { | |
168 | bluecard_info_t *info = (bluecard_info_t *)arg; | |
169 | unsigned int iobase = info->link.io.BasePort1; | |
170 | ||
171 | if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) | |
172 | return; | |
173 | ||
174 | if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) { | |
175 | /* Disable activity LED */ | |
176 | outb(0x08 | 0x20, iobase + 0x30); | |
177 | } else { | |
178 | /* Disable power LED */ | |
179 | outb(0x00, iobase + 0x30); | |
180 | } | |
181 | } | |
182 | ||
183 | ||
184 | static void bluecard_enable_activity_led(bluecard_info_t *info) | |
185 | { | |
186 | unsigned int iobase = info->link.io.BasePort1; | |
187 | ||
188 | if (!test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) | |
189 | return; | |
190 | ||
191 | if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) { | |
192 | /* Enable activity LED */ | |
193 | outb(0x10 | 0x40, iobase + 0x30); | |
194 | ||
195 | /* Stop the LED after HZ/4 */ | |
196 | mod_timer(&(info->timer), jiffies + HZ / 4); | |
197 | } else { | |
198 | /* Enable power LED */ | |
199 | outb(0x08 | 0x20, iobase + 0x30); | |
200 | ||
201 | /* Stop the LED after HZ/2 */ | |
202 | mod_timer(&(info->timer), jiffies + HZ / 2); | |
203 | } | |
204 | } | |
205 | ||
206 | ||
207 | ||
208 | /* ======================== Interrupt handling ======================== */ | |
209 | ||
210 | ||
211 | static int bluecard_write(unsigned int iobase, unsigned int offset, __u8 *buf, int len) | |
212 | { | |
213 | int i, actual; | |
214 | ||
215 | actual = (len > 15) ? 15 : len; | |
216 | ||
217 | outb_p(actual, iobase + offset); | |
218 | ||
219 | for (i = 0; i < actual; i++) | |
220 | outb_p(buf[i], iobase + offset + i + 1); | |
221 | ||
222 | return actual; | |
223 | } | |
224 | ||
225 | ||
226 | static void bluecard_write_wakeup(bluecard_info_t *info) | |
227 | { | |
228 | if (!info) { | |
229 | BT_ERR("Unknown device"); | |
230 | return; | |
231 | } | |
232 | ||
233 | if (!test_bit(XMIT_SENDING_READY, &(info->tx_state))) | |
234 | return; | |
235 | ||
236 | if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) { | |
237 | set_bit(XMIT_WAKEUP, &(info->tx_state)); | |
238 | return; | |
239 | } | |
240 | ||
241 | do { | |
242 | register unsigned int iobase = info->link.io.BasePort1; | |
243 | register unsigned int offset; | |
244 | register unsigned char command; | |
245 | register unsigned long ready_bit; | |
246 | register struct sk_buff *skb; | |
247 | register int len; | |
248 | ||
249 | clear_bit(XMIT_WAKEUP, &(info->tx_state)); | |
250 | ||
251 | if (!(info->link.state & DEV_PRESENT)) | |
252 | return; | |
253 | ||
254 | if (test_bit(XMIT_BUFFER_NUMBER, &(info->tx_state))) { | |
255 | if (!test_bit(XMIT_BUF_TWO_READY, &(info->tx_state))) | |
256 | break; | |
257 | offset = 0x10; | |
258 | command = REG_COMMAND_TX_BUF_TWO; | |
259 | ready_bit = XMIT_BUF_TWO_READY; | |
260 | } else { | |
261 | if (!test_bit(XMIT_BUF_ONE_READY, &(info->tx_state))) | |
262 | break; | |
263 | offset = 0x00; | |
264 | command = REG_COMMAND_TX_BUF_ONE; | |
265 | ready_bit = XMIT_BUF_ONE_READY; | |
266 | } | |
267 | ||
268 | if (!(skb = skb_dequeue(&(info->txq)))) | |
269 | break; | |
270 | ||
0d48d939 | 271 | if (bt_cb(skb)->pkt_type & 0x80) { |
1da177e4 LT |
272 | /* Disable RTS */ |
273 | info->ctrl_reg |= REG_CONTROL_RTS; | |
274 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
275 | } | |
276 | ||
277 | /* Activate LED */ | |
278 | bluecard_enable_activity_led(info); | |
279 | ||
280 | /* Send frame */ | |
281 | len = bluecard_write(iobase, offset, skb->data, skb->len); | |
282 | ||
283 | /* Tell the FPGA to send the data */ | |
284 | outb_p(command, iobase + REG_COMMAND); | |
285 | ||
286 | /* Mark the buffer as dirty */ | |
287 | clear_bit(ready_bit, &(info->tx_state)); | |
288 | ||
0d48d939 | 289 | if (bt_cb(skb)->pkt_type & 0x80) { |
1da177e4 LT |
290 | DECLARE_WAIT_QUEUE_HEAD(wq); |
291 | DEFINE_WAIT(wait); | |
292 | ||
293 | unsigned char baud_reg; | |
294 | ||
0d48d939 | 295 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
296 | case PKT_BAUD_RATE_460800: |
297 | baud_reg = REG_CONTROL_BAUD_RATE_460800; | |
298 | break; | |
299 | case PKT_BAUD_RATE_230400: | |
300 | baud_reg = REG_CONTROL_BAUD_RATE_230400; | |
301 | break; | |
302 | case PKT_BAUD_RATE_115200: | |
303 | baud_reg = REG_CONTROL_BAUD_RATE_115200; | |
304 | break; | |
305 | case PKT_BAUD_RATE_57600: | |
306 | /* Fall through... */ | |
307 | default: | |
308 | baud_reg = REG_CONTROL_BAUD_RATE_57600; | |
309 | break; | |
310 | } | |
311 | ||
312 | /* Wait until the command reaches the baseband */ | |
313 | prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE); | |
314 | schedule_timeout(HZ/10); | |
315 | finish_wait(&wq, &wait); | |
316 | ||
317 | /* Set baud on baseband */ | |
318 | info->ctrl_reg &= ~0x03; | |
319 | info->ctrl_reg |= baud_reg; | |
320 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
321 | ||
322 | /* Enable RTS */ | |
323 | info->ctrl_reg &= ~REG_CONTROL_RTS; | |
324 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
325 | ||
326 | /* Wait before the next HCI packet can be send */ | |
327 | prepare_to_wait(&wq, &wait, TASK_INTERRUPTIBLE); | |
328 | schedule_timeout(HZ); | |
329 | finish_wait(&wq, &wait); | |
330 | } | |
331 | ||
332 | if (len == skb->len) { | |
333 | kfree_skb(skb); | |
334 | } else { | |
335 | skb_pull(skb, len); | |
336 | skb_queue_head(&(info->txq), skb); | |
337 | } | |
338 | ||
339 | info->hdev->stat.byte_tx += len; | |
340 | ||
341 | /* Change buffer */ | |
342 | change_bit(XMIT_BUFFER_NUMBER, &(info->tx_state)); | |
343 | ||
344 | } while (test_bit(XMIT_WAKEUP, &(info->tx_state))); | |
345 | ||
346 | clear_bit(XMIT_SENDING, &(info->tx_state)); | |
347 | } | |
348 | ||
349 | ||
350 | static int bluecard_read(unsigned int iobase, unsigned int offset, __u8 *buf, int size) | |
351 | { | |
352 | int i, n, len; | |
353 | ||
354 | outb(REG_COMMAND_RX_WIN_ONE, iobase + REG_COMMAND); | |
355 | ||
356 | len = inb(iobase + offset); | |
357 | n = 0; | |
358 | i = 1; | |
359 | ||
360 | while (n < len) { | |
361 | ||
362 | if (i == 16) { | |
363 | outb(REG_COMMAND_RX_WIN_TWO, iobase + REG_COMMAND); | |
364 | i = 0; | |
365 | } | |
366 | ||
367 | buf[n] = inb(iobase + offset + i); | |
368 | ||
369 | n++; | |
370 | i++; | |
371 | ||
372 | } | |
373 | ||
374 | return len; | |
375 | } | |
376 | ||
377 | ||
378 | static void bluecard_receive(bluecard_info_t *info, unsigned int offset) | |
379 | { | |
380 | unsigned int iobase; | |
381 | unsigned char buf[31]; | |
382 | int i, len; | |
383 | ||
384 | if (!info) { | |
385 | BT_ERR("Unknown device"); | |
386 | return; | |
387 | } | |
388 | ||
389 | iobase = info->link.io.BasePort1; | |
390 | ||
391 | if (test_bit(XMIT_SENDING_READY, &(info->tx_state))) | |
392 | bluecard_enable_activity_led(info); | |
393 | ||
394 | len = bluecard_read(iobase, offset, buf, sizeof(buf)); | |
395 | ||
396 | for (i = 0; i < len; i++) { | |
397 | ||
398 | /* Allocate packet */ | |
399 | if (info->rx_skb == NULL) { | |
400 | info->rx_state = RECV_WAIT_PACKET_TYPE; | |
401 | info->rx_count = 0; | |
402 | if (!(info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) { | |
403 | BT_ERR("Can't allocate mem for new packet"); | |
404 | return; | |
405 | } | |
406 | } | |
407 | ||
408 | if (info->rx_state == RECV_WAIT_PACKET_TYPE) { | |
409 | ||
410 | info->rx_skb->dev = (void *) info->hdev; | |
0d48d939 | 411 | bt_cb(info->rx_skb)->pkt_type = buf[i]; |
1da177e4 | 412 | |
0d48d939 | 413 | switch (bt_cb(info->rx_skb)->pkt_type) { |
1da177e4 LT |
414 | |
415 | case 0x00: | |
416 | /* init packet */ | |
417 | if (offset != 0x00) { | |
418 | set_bit(XMIT_BUF_ONE_READY, &(info->tx_state)); | |
419 | set_bit(XMIT_BUF_TWO_READY, &(info->tx_state)); | |
420 | set_bit(XMIT_SENDING_READY, &(info->tx_state)); | |
421 | bluecard_write_wakeup(info); | |
422 | } | |
423 | ||
424 | kfree_skb(info->rx_skb); | |
425 | info->rx_skb = NULL; | |
426 | break; | |
427 | ||
428 | case HCI_EVENT_PKT: | |
429 | info->rx_state = RECV_WAIT_EVENT_HEADER; | |
430 | info->rx_count = HCI_EVENT_HDR_SIZE; | |
431 | break; | |
432 | ||
433 | case HCI_ACLDATA_PKT: | |
434 | info->rx_state = RECV_WAIT_ACL_HEADER; | |
435 | info->rx_count = HCI_ACL_HDR_SIZE; | |
436 | break; | |
437 | ||
438 | case HCI_SCODATA_PKT: | |
439 | info->rx_state = RECV_WAIT_SCO_HEADER; | |
440 | info->rx_count = HCI_SCO_HDR_SIZE; | |
441 | break; | |
442 | ||
443 | default: | |
444 | /* unknown packet */ | |
0d48d939 | 445 | BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type); |
1da177e4 LT |
446 | info->hdev->stat.err_rx++; |
447 | ||
448 | kfree_skb(info->rx_skb); | |
449 | info->rx_skb = NULL; | |
450 | break; | |
451 | ||
452 | } | |
453 | ||
454 | } else { | |
455 | ||
456 | *skb_put(info->rx_skb, 1) = buf[i]; | |
457 | info->rx_count--; | |
458 | ||
459 | if (info->rx_count == 0) { | |
460 | ||
461 | int dlen; | |
462 | struct hci_event_hdr *eh; | |
463 | struct hci_acl_hdr *ah; | |
464 | struct hci_sco_hdr *sh; | |
465 | ||
466 | switch (info->rx_state) { | |
467 | ||
468 | case RECV_WAIT_EVENT_HEADER: | |
469 | eh = (struct hci_event_hdr *)(info->rx_skb->data); | |
470 | info->rx_state = RECV_WAIT_DATA; | |
471 | info->rx_count = eh->plen; | |
472 | break; | |
473 | ||
474 | case RECV_WAIT_ACL_HEADER: | |
475 | ah = (struct hci_acl_hdr *)(info->rx_skb->data); | |
476 | dlen = __le16_to_cpu(ah->dlen); | |
477 | info->rx_state = RECV_WAIT_DATA; | |
478 | info->rx_count = dlen; | |
479 | break; | |
480 | ||
481 | case RECV_WAIT_SCO_HEADER: | |
482 | sh = (struct hci_sco_hdr *)(info->rx_skb->data); | |
483 | info->rx_state = RECV_WAIT_DATA; | |
484 | info->rx_count = sh->dlen; | |
485 | break; | |
486 | ||
487 | case RECV_WAIT_DATA: | |
488 | hci_recv_frame(info->rx_skb); | |
489 | info->rx_skb = NULL; | |
490 | break; | |
491 | ||
492 | } | |
493 | ||
494 | } | |
495 | ||
496 | } | |
497 | ||
498 | ||
499 | } | |
500 | ||
501 | info->hdev->stat.byte_rx += len; | |
502 | } | |
503 | ||
504 | ||
505 | static irqreturn_t bluecard_interrupt(int irq, void *dev_inst, struct pt_regs *regs) | |
506 | { | |
507 | bluecard_info_t *info = dev_inst; | |
508 | unsigned int iobase; | |
509 | unsigned char reg; | |
510 | ||
511 | if (!info || !info->hdev) { | |
512 | BT_ERR("Call of irq %d for unknown device", irq); | |
513 | return IRQ_NONE; | |
514 | } | |
515 | ||
516 | if (!test_bit(CARD_READY, &(info->hw_state))) | |
517 | return IRQ_HANDLED; | |
518 | ||
519 | iobase = info->link.io.BasePort1; | |
520 | ||
521 | spin_lock(&(info->lock)); | |
522 | ||
523 | /* Disable interrupt */ | |
524 | info->ctrl_reg &= ~REG_CONTROL_INTERRUPT; | |
525 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
526 | ||
527 | reg = inb(iobase + REG_INTERRUPT); | |
528 | ||
529 | if ((reg != 0x00) && (reg != 0xff)) { | |
530 | ||
531 | if (reg & 0x04) { | |
532 | bluecard_receive(info, 0x00); | |
533 | outb(0x04, iobase + REG_INTERRUPT); | |
534 | outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND); | |
535 | } | |
536 | ||
537 | if (reg & 0x08) { | |
538 | bluecard_receive(info, 0x10); | |
539 | outb(0x08, iobase + REG_INTERRUPT); | |
540 | outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND); | |
541 | } | |
542 | ||
543 | if (reg & 0x01) { | |
544 | set_bit(XMIT_BUF_ONE_READY, &(info->tx_state)); | |
545 | outb(0x01, iobase + REG_INTERRUPT); | |
546 | bluecard_write_wakeup(info); | |
547 | } | |
548 | ||
549 | if (reg & 0x02) { | |
550 | set_bit(XMIT_BUF_TWO_READY, &(info->tx_state)); | |
551 | outb(0x02, iobase + REG_INTERRUPT); | |
552 | bluecard_write_wakeup(info); | |
553 | } | |
554 | ||
555 | } | |
556 | ||
557 | /* Enable interrupt */ | |
558 | info->ctrl_reg |= REG_CONTROL_INTERRUPT; | |
559 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
560 | ||
561 | spin_unlock(&(info->lock)); | |
562 | ||
563 | return IRQ_HANDLED; | |
564 | } | |
565 | ||
566 | ||
567 | ||
568 | /* ======================== Device specific HCI commands ======================== */ | |
569 | ||
570 | ||
571 | static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud) | |
572 | { | |
573 | bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data); | |
574 | struct sk_buff *skb; | |
575 | ||
576 | /* Ericsson baud rate command */ | |
577 | unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 }; | |
578 | ||
579 | if (!(skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) { | |
580 | BT_ERR("Can't allocate mem for new packet"); | |
581 | return -1; | |
582 | } | |
583 | ||
584 | switch (baud) { | |
585 | case 460800: | |
586 | cmd[4] = 0x00; | |
0d48d939 | 587 | bt_cb(skb)->pkt_type = PKT_BAUD_RATE_460800; |
1da177e4 LT |
588 | break; |
589 | case 230400: | |
590 | cmd[4] = 0x01; | |
0d48d939 | 591 | bt_cb(skb)->pkt_type = PKT_BAUD_RATE_230400; |
1da177e4 LT |
592 | break; |
593 | case 115200: | |
594 | cmd[4] = 0x02; | |
0d48d939 | 595 | bt_cb(skb)->pkt_type = PKT_BAUD_RATE_115200; |
1da177e4 LT |
596 | break; |
597 | case 57600: | |
598 | /* Fall through... */ | |
599 | default: | |
600 | cmd[4] = 0x03; | |
0d48d939 | 601 | bt_cb(skb)->pkt_type = PKT_BAUD_RATE_57600; |
1da177e4 LT |
602 | break; |
603 | } | |
604 | ||
605 | memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd)); | |
606 | ||
607 | skb_queue_tail(&(info->txq), skb); | |
608 | ||
609 | bluecard_write_wakeup(info); | |
610 | ||
611 | return 0; | |
612 | } | |
613 | ||
614 | ||
615 | ||
616 | /* ======================== HCI interface ======================== */ | |
617 | ||
618 | ||
619 | static int bluecard_hci_flush(struct hci_dev *hdev) | |
620 | { | |
621 | bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data); | |
622 | ||
623 | /* Drop TX queue */ | |
624 | skb_queue_purge(&(info->txq)); | |
625 | ||
626 | return 0; | |
627 | } | |
628 | ||
629 | ||
630 | static int bluecard_hci_open(struct hci_dev *hdev) | |
631 | { | |
632 | bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data); | |
633 | unsigned int iobase = info->link.io.BasePort1; | |
634 | ||
635 | if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) | |
636 | bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE); | |
637 | ||
638 | if (test_and_set_bit(HCI_RUNNING, &(hdev->flags))) | |
639 | return 0; | |
640 | ||
641 | if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) { | |
642 | /* Enable LED */ | |
643 | outb(0x08 | 0x20, iobase + 0x30); | |
644 | } | |
645 | ||
646 | return 0; | |
647 | } | |
648 | ||
649 | ||
650 | static int bluecard_hci_close(struct hci_dev *hdev) | |
651 | { | |
652 | bluecard_info_t *info = (bluecard_info_t *)(hdev->driver_data); | |
653 | unsigned int iobase = info->link.io.BasePort1; | |
654 | ||
655 | if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags))) | |
656 | return 0; | |
657 | ||
658 | bluecard_hci_flush(hdev); | |
659 | ||
660 | if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state))) { | |
661 | /* Disable LED */ | |
662 | outb(0x00, iobase + 0x30); | |
663 | } | |
664 | ||
665 | return 0; | |
666 | } | |
667 | ||
668 | ||
669 | static int bluecard_hci_send_frame(struct sk_buff *skb) | |
670 | { | |
671 | bluecard_info_t *info; | |
672 | struct hci_dev *hdev = (struct hci_dev *)(skb->dev); | |
673 | ||
674 | if (!hdev) { | |
675 | BT_ERR("Frame for unknown HCI device (hdev=NULL)"); | |
676 | return -ENODEV; | |
677 | } | |
678 | ||
679 | info = (bluecard_info_t *)(hdev->driver_data); | |
680 | ||
0d48d939 | 681 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
682 | case HCI_COMMAND_PKT: |
683 | hdev->stat.cmd_tx++; | |
684 | break; | |
685 | case HCI_ACLDATA_PKT: | |
686 | hdev->stat.acl_tx++; | |
687 | break; | |
688 | case HCI_SCODATA_PKT: | |
689 | hdev->stat.sco_tx++; | |
690 | break; | |
691 | }; | |
692 | ||
693 | /* Prepend skb with frame type */ | |
0d48d939 | 694 | memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1); |
1da177e4 LT |
695 | skb_queue_tail(&(info->txq), skb); |
696 | ||
697 | bluecard_write_wakeup(info); | |
698 | ||
699 | return 0; | |
700 | } | |
701 | ||
702 | ||
703 | static void bluecard_hci_destruct(struct hci_dev *hdev) | |
704 | { | |
705 | } | |
706 | ||
707 | ||
708 | static int bluecard_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg) | |
709 | { | |
710 | return -ENOIOCTLCMD; | |
711 | } | |
712 | ||
713 | ||
714 | ||
715 | /* ======================== Card services HCI interaction ======================== */ | |
716 | ||
717 | ||
718 | static int bluecard_open(bluecard_info_t *info) | |
719 | { | |
720 | unsigned int iobase = info->link.io.BasePort1; | |
721 | struct hci_dev *hdev; | |
722 | unsigned char id; | |
723 | ||
724 | spin_lock_init(&(info->lock)); | |
725 | ||
726 | init_timer(&(info->timer)); | |
727 | info->timer.function = &bluecard_activity_led_timeout; | |
728 | info->timer.data = (u_long)info; | |
729 | ||
730 | skb_queue_head_init(&(info->txq)); | |
731 | ||
732 | info->rx_state = RECV_WAIT_PACKET_TYPE; | |
733 | info->rx_count = 0; | |
734 | info->rx_skb = NULL; | |
735 | ||
736 | /* Initialize HCI device */ | |
737 | hdev = hci_alloc_dev(); | |
738 | if (!hdev) { | |
739 | BT_ERR("Can't allocate HCI device"); | |
740 | return -ENOMEM; | |
741 | } | |
742 | ||
743 | info->hdev = hdev; | |
744 | ||
745 | hdev->type = HCI_PCCARD; | |
746 | hdev->driver_data = info; | |
747 | ||
748 | hdev->open = bluecard_hci_open; | |
749 | hdev->close = bluecard_hci_close; | |
750 | hdev->flush = bluecard_hci_flush; | |
751 | hdev->send = bluecard_hci_send_frame; | |
752 | hdev->destruct = bluecard_hci_destruct; | |
753 | hdev->ioctl = bluecard_hci_ioctl; | |
754 | ||
755 | hdev->owner = THIS_MODULE; | |
756 | ||
757 | id = inb(iobase + 0x30); | |
758 | ||
759 | if ((id & 0x0f) == 0x02) | |
760 | set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)); | |
761 | ||
762 | if (id & 0x10) | |
763 | set_bit(CARD_HAS_POWER_LED, &(info->hw_state)); | |
764 | ||
765 | if (id & 0x20) | |
766 | set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state)); | |
767 | ||
768 | /* Reset card */ | |
769 | info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET; | |
770 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
771 | ||
772 | /* Turn FPGA off */ | |
773 | outb(0x80, iobase + 0x30); | |
774 | ||
775 | /* Wait some time */ | |
776 | msleep(10); | |
777 | ||
778 | /* Turn FPGA on */ | |
779 | outb(0x00, iobase + 0x30); | |
780 | ||
781 | /* Activate card */ | |
782 | info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU; | |
783 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
784 | ||
785 | /* Enable interrupt */ | |
786 | outb(0xff, iobase + REG_INTERRUPT); | |
787 | info->ctrl_reg |= REG_CONTROL_INTERRUPT; | |
788 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
789 | ||
790 | if ((id & 0x0f) == 0x03) { | |
791 | /* Disable RTS */ | |
792 | info->ctrl_reg |= REG_CONTROL_RTS; | |
793 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
794 | ||
795 | /* Set baud rate */ | |
796 | info->ctrl_reg |= 0x03; | |
797 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
798 | ||
799 | /* Enable RTS */ | |
800 | info->ctrl_reg &= ~REG_CONTROL_RTS; | |
801 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
802 | ||
803 | set_bit(XMIT_BUF_ONE_READY, &(info->tx_state)); | |
804 | set_bit(XMIT_BUF_TWO_READY, &(info->tx_state)); | |
805 | set_bit(XMIT_SENDING_READY, &(info->tx_state)); | |
806 | } | |
807 | ||
808 | /* Start the RX buffers */ | |
809 | outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND); | |
810 | outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND); | |
811 | ||
812 | /* Signal that the hardware is ready */ | |
813 | set_bit(CARD_READY, &(info->hw_state)); | |
814 | ||
815 | /* Drop TX queue */ | |
816 | skb_queue_purge(&(info->txq)); | |
817 | ||
818 | /* Control the point at which RTS is enabled */ | |
819 | outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL); | |
820 | ||
821 | /* Timeout before it is safe to send the first HCI packet */ | |
822 | msleep(1250); | |
823 | ||
824 | /* Register HCI device */ | |
825 | if (hci_register_dev(hdev) < 0) { | |
826 | BT_ERR("Can't register HCI device"); | |
827 | info->hdev = NULL; | |
828 | hci_free_dev(hdev); | |
829 | return -ENODEV; | |
830 | } | |
831 | ||
832 | return 0; | |
833 | } | |
834 | ||
835 | ||
836 | static int bluecard_close(bluecard_info_t *info) | |
837 | { | |
838 | unsigned int iobase = info->link.io.BasePort1; | |
839 | struct hci_dev *hdev = info->hdev; | |
840 | ||
841 | if (!hdev) | |
842 | return -ENODEV; | |
843 | ||
844 | bluecard_hci_close(hdev); | |
845 | ||
846 | clear_bit(CARD_READY, &(info->hw_state)); | |
847 | ||
848 | /* Reset card */ | |
849 | info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET; | |
850 | outb(info->ctrl_reg, iobase + REG_CONTROL); | |
851 | ||
852 | /* Turn FPGA off */ | |
853 | outb(0x80, iobase + 0x30); | |
854 | ||
855 | if (hci_unregister_dev(hdev) < 0) | |
856 | BT_ERR("Can't unregister HCI device %s", hdev->name); | |
857 | ||
858 | hci_free_dev(hdev); | |
859 | ||
860 | return 0; | |
861 | } | |
862 | ||
863 | static dev_link_t *bluecard_attach(void) | |
864 | { | |
865 | bluecard_info_t *info; | |
866 | client_reg_t client_reg; | |
867 | dev_link_t *link; | |
868 | int ret; | |
869 | ||
870 | /* Create new info device */ | |
089b1dbb | 871 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
1da177e4 LT |
872 | if (!info) |
873 | return NULL; | |
1da177e4 LT |
874 | |
875 | link = &info->link; | |
876 | link->priv = info; | |
877 | ||
878 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_8; | |
879 | link->io.NumPorts1 = 8; | |
880 | link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT; | |
881 | link->irq.IRQInfo1 = IRQ_LEVEL_ID; | |
882 | ||
883 | link->irq.Handler = bluecard_interrupt; | |
884 | link->irq.Instance = info; | |
885 | ||
886 | link->conf.Attributes = CONF_ENABLE_IRQ; | |
887 | link->conf.Vcc = 50; | |
888 | link->conf.IntType = INT_MEMORY_AND_IO; | |
889 | ||
890 | /* Register with Card Services */ | |
b4635811 | 891 | link->next = NULL; |
1da177e4 | 892 | client_reg.dev_info = &dev_info; |
1da177e4 LT |
893 | client_reg.Version = 0x0210; |
894 | client_reg.event_callback_args.client_data = link; | |
895 | ||
896 | ret = pcmcia_register_client(&link->handle, &client_reg); | |
897 | if (ret != CS_SUCCESS) { | |
898 | cs_error(link->handle, RegisterClient, ret); | |
cc3b4866 | 899 | bluecard_detach(link->handle); |
1da177e4 LT |
900 | return NULL; |
901 | } | |
902 | ||
903 | return link; | |
904 | } | |
905 | ||
906 | ||
cc3b4866 | 907 | static void bluecard_detach(struct pcmcia_device *p_dev) |
1da177e4 | 908 | { |
cc3b4866 | 909 | dev_link_t *link = dev_to_instance(p_dev); |
1da177e4 | 910 | bluecard_info_t *info = link->priv; |
1da177e4 LT |
911 | |
912 | if (link->state & DEV_CONFIG) | |
913 | bluecard_release(link); | |
914 | ||
1da177e4 LT |
915 | kfree(info); |
916 | } | |
917 | ||
918 | ||
919 | static int first_tuple(client_handle_t handle, tuple_t *tuple, cisparse_t *parse) | |
920 | { | |
921 | int i; | |
922 | ||
923 | i = pcmcia_get_first_tuple(handle, tuple); | |
924 | if (i != CS_SUCCESS) | |
925 | return CS_NO_MORE_ITEMS; | |
926 | ||
927 | i = pcmcia_get_tuple_data(handle, tuple); | |
928 | if (i != CS_SUCCESS) | |
929 | return i; | |
930 | ||
931 | return pcmcia_parse_tuple(handle, tuple, parse); | |
932 | } | |
933 | ||
934 | static void bluecard_config(dev_link_t *link) | |
935 | { | |
936 | client_handle_t handle = link->handle; | |
937 | bluecard_info_t *info = link->priv; | |
938 | tuple_t tuple; | |
939 | u_short buf[256]; | |
940 | cisparse_t parse; | |
941 | config_info_t config; | |
942 | int i, n, last_ret, last_fn; | |
943 | ||
944 | tuple.TupleData = (cisdata_t *)buf; | |
945 | tuple.TupleOffset = 0; | |
946 | tuple.TupleDataMax = 255; | |
947 | tuple.Attributes = 0; | |
948 | ||
949 | /* Get configuration register information */ | |
950 | tuple.DesiredTuple = CISTPL_CONFIG; | |
951 | last_ret = first_tuple(handle, &tuple, &parse); | |
952 | if (last_ret != CS_SUCCESS) { | |
953 | last_fn = ParseTuple; | |
954 | goto cs_failed; | |
955 | } | |
956 | link->conf.ConfigBase = parse.config.base; | |
957 | link->conf.Present = parse.config.rmask[0]; | |
958 | ||
959 | /* Configure card */ | |
960 | link->state |= DEV_CONFIG; | |
961 | i = pcmcia_get_configuration_info(handle, &config); | |
962 | link->conf.Vcc = config.Vcc; | |
963 | ||
964 | link->conf.ConfigIndex = 0x20; | |
965 | link->io.NumPorts1 = 64; | |
966 | link->io.IOAddrLines = 6; | |
967 | ||
968 | for (n = 0; n < 0x400; n += 0x40) { | |
969 | link->io.BasePort1 = n ^ 0x300; | |
970 | i = pcmcia_request_io(link->handle, &link->io); | |
971 | if (i == CS_SUCCESS) | |
972 | break; | |
973 | } | |
974 | ||
975 | if (i != CS_SUCCESS) { | |
976 | cs_error(link->handle, RequestIO, i); | |
977 | goto failed; | |
978 | } | |
979 | ||
980 | i = pcmcia_request_irq(link->handle, &link->irq); | |
981 | if (i != CS_SUCCESS) { | |
982 | cs_error(link->handle, RequestIRQ, i); | |
983 | link->irq.AssignedIRQ = 0; | |
984 | } | |
985 | ||
986 | i = pcmcia_request_configuration(link->handle, &link->conf); | |
987 | if (i != CS_SUCCESS) { | |
988 | cs_error(link->handle, RequestConfiguration, i); | |
989 | goto failed; | |
990 | } | |
991 | ||
992 | if (bluecard_open(info) != 0) | |
993 | goto failed; | |
994 | ||
995 | strcpy(info->node.dev_name, info->hdev->name); | |
996 | link->dev = &info->node; | |
997 | link->state &= ~DEV_CONFIG_PENDING; | |
998 | ||
999 | return; | |
1000 | ||
1001 | cs_failed: | |
1002 | cs_error(link->handle, last_fn, last_ret); | |
1003 | ||
1004 | failed: | |
1005 | bluecard_release(link); | |
1006 | } | |
1007 | ||
1008 | ||
1009 | static void bluecard_release(dev_link_t *link) | |
1010 | { | |
1011 | bluecard_info_t *info = link->priv; | |
1012 | ||
1013 | if (link->state & DEV_PRESENT) | |
1014 | bluecard_close(info); | |
1015 | ||
1016 | del_timer(&(info->timer)); | |
1017 | ||
1018 | link->dev = NULL; | |
1019 | ||
1020 | pcmcia_release_configuration(link->handle); | |
1021 | pcmcia_release_io(link->handle, &link->io); | |
1022 | pcmcia_release_irq(link->handle, &link->irq); | |
1023 | ||
1024 | link->state &= ~DEV_CONFIG; | |
1025 | } | |
1026 | ||
98e4c28b DB |
1027 | static int bluecard_suspend(struct pcmcia_device *dev) |
1028 | { | |
1029 | dev_link_t *link = dev_to_instance(dev); | |
1030 | ||
1031 | link->state |= DEV_SUSPEND; | |
1032 | if (link->state & DEV_CONFIG) | |
1033 | pcmcia_release_configuration(link->handle); | |
1034 | ||
1035 | return 0; | |
1036 | } | |
1037 | ||
1038 | static int bluecard_resume(struct pcmcia_device *dev) | |
1039 | { | |
1040 | dev_link_t *link = dev_to_instance(dev); | |
1041 | ||
1042 | link->state &= ~DEV_SUSPEND; | |
1043 | if (DEV_OK(link)) | |
1044 | pcmcia_request_configuration(link->handle, &link->conf); | |
1045 | ||
1046 | return 0; | |
1047 | } | |
1da177e4 LT |
1048 | |
1049 | static int bluecard_event(event_t event, int priority, event_callback_args_t *args) | |
1050 | { | |
1051 | dev_link_t *link = args->client_data; | |
1da177e4 LT |
1052 | |
1053 | switch (event) { | |
1da177e4 LT |
1054 | case CS_EVENT_CARD_INSERTION: |
1055 | link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; | |
1056 | bluecard_config(link); | |
1057 | break; | |
1da177e4 LT |
1058 | } |
1059 | ||
1060 | return 0; | |
1061 | } | |
1062 | ||
7f70cb6d DB |
1063 | static struct pcmcia_device_id bluecard_ids[] = { |
1064 | PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e), | |
1065 | PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c), | |
1066 | PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab), | |
1067 | PCMCIA_DEVICE_NULL | |
1068 | }; | |
1069 | MODULE_DEVICE_TABLE(pcmcia, bluecard_ids); | |
1070 | ||
1da177e4 LT |
1071 | static struct pcmcia_driver bluecard_driver = { |
1072 | .owner = THIS_MODULE, | |
1073 | .drv = { | |
1074 | .name = "bluecard_cs", | |
1075 | }, | |
1076 | .attach = bluecard_attach, | |
1e212f36 | 1077 | .event = bluecard_event, |
cc3b4866 | 1078 | .remove = bluecard_detach, |
7f70cb6d | 1079 | .id_table = bluecard_ids, |
98e4c28b DB |
1080 | .suspend = bluecard_suspend, |
1081 | .resume = bluecard_resume, | |
1da177e4 LT |
1082 | }; |
1083 | ||
1084 | static int __init init_bluecard_cs(void) | |
1085 | { | |
1086 | return pcmcia_register_driver(&bluecard_driver); | |
1087 | } | |
1088 | ||
1089 | ||
1090 | static void __exit exit_bluecard_cs(void) | |
1091 | { | |
1092 | pcmcia_unregister_driver(&bluecard_driver); | |
1da177e4 LT |
1093 | } |
1094 | ||
1095 | module_init(init_bluecard_cs); | |
1096 | module_exit(exit_bluecard_cs); |