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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/bluetooth/bt3c_cs.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/bluetooth/bt3c_cs.c')
-rw-r--r--drivers/bluetooth/bt3c_cs.c960
1 files changed, 960 insertions, 0 deletions
diff --git a/drivers/bluetooth/bt3c_cs.c b/drivers/bluetooth/bt3c_cs.c
new file mode 100644
index 000000000000..f71e5c76963d
--- /dev/null
+++ b/drivers/bluetooth/bt3c_cs.c
@@ -0,0 +1,960 @@
1/*
2 *
3 * Driver for the 3Com Bluetooth PCMCIA card
4 *
5 * Copyright (C) 2001-2002 Marcel Holtmann <marcel@holtmann.org>
6 * Jose Orlando Pereira <jop@di.uminho.pt>
7 *
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation;
12 *
13 * Software distributed under the License is distributed on an "AS
14 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
15 * implied. See the License for the specific language governing
16 * rights and limitations under the License.
17 *
18 * The initial developer of the original code is David A. Hinds
19 * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
20 * are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
21 *
22 */
23
24#include <linux/config.h>
25#include <linux/module.h>
26
27#include <linux/kernel.h>
28#include <linux/init.h>
29#include <linux/slab.h>
30#include <linux/types.h>
31#include <linux/sched.h>
32#include <linux/delay.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
39#include <linux/skbuff.h>
40#include <linux/string.h>
41#include <linux/serial.h>
42#include <linux/serial_reg.h>
43#include <linux/bitops.h>
44#include <asm/system.h>
45#include <asm/io.h>
46
47#include <linux/device.h>
48#include <linux/firmware.h>
49
50#include <pcmcia/version.h>
51#include <pcmcia/cs_types.h>
52#include <pcmcia/cs.h>
53#include <pcmcia/cistpl.h>
54#include <pcmcia/ciscode.h>
55#include <pcmcia/ds.h>
56#include <pcmcia/cisreg.h>
57
58#include <net/bluetooth/bluetooth.h>
59#include <net/bluetooth/hci_core.h>
60
61
62
63/* ======================== Module parameters ======================== */
64
65
66MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>, Jose Orlando Pereira <jop@di.uminho.pt>");
67MODULE_DESCRIPTION("Bluetooth driver for the 3Com Bluetooth PCMCIA card");
68MODULE_LICENSE("GPL");
69
70
71
72/* ======================== Local structures ======================== */
73
74
75typedef struct bt3c_info_t {
76 dev_link_t link;
77 dev_node_t node;
78
79 struct hci_dev *hdev;
80
81 spinlock_t lock; /* For serializing operations */
82
83 struct sk_buff_head txq;
84 unsigned long tx_state;
85
86 unsigned long rx_state;
87 unsigned long rx_count;
88 struct sk_buff *rx_skb;
89} bt3c_info_t;
90
91
92static void bt3c_config(dev_link_t *link);
93static void bt3c_release(dev_link_t *link);
94static int bt3c_event(event_t event, int priority, event_callback_args_t *args);
95
96static dev_info_t dev_info = "bt3c_cs";
97
98static dev_link_t *bt3c_attach(void);
99static void bt3c_detach(dev_link_t *);
100
101static dev_link_t *dev_list = NULL;
102
103
104/* Transmit states */
105#define XMIT_SENDING 1
106#define XMIT_WAKEUP 2
107#define XMIT_WAITING 8
108
109/* Receiver states */
110#define RECV_WAIT_PACKET_TYPE 0
111#define RECV_WAIT_EVENT_HEADER 1
112#define RECV_WAIT_ACL_HEADER 2
113#define RECV_WAIT_SCO_HEADER 3
114#define RECV_WAIT_DATA 4
115
116
117
118/* ======================== Special I/O functions ======================== */
119
120
121#define DATA_L 0
122#define DATA_H 1
123#define ADDR_L 2
124#define ADDR_H 3
125#define CONTROL 4
126
127
128static inline void bt3c_address(unsigned int iobase, unsigned short addr)
129{
130 outb(addr & 0xff, iobase + ADDR_L);
131 outb((addr >> 8) & 0xff, iobase + ADDR_H);
132}
133
134
135static inline void bt3c_put(unsigned int iobase, unsigned short value)
136{
137 outb(value & 0xff, iobase + DATA_L);
138 outb((value >> 8) & 0xff, iobase + DATA_H);
139}
140
141
142static inline void bt3c_io_write(unsigned int iobase, unsigned short addr, unsigned short value)
143{
144 bt3c_address(iobase, addr);
145 bt3c_put(iobase, value);
146}
147
148
149static inline unsigned short bt3c_get(unsigned int iobase)
150{
151 unsigned short value = inb(iobase + DATA_L);
152
153 value |= inb(iobase + DATA_H) << 8;
154
155 return value;
156}
157
158
159static inline unsigned short bt3c_read(unsigned int iobase, unsigned short addr)
160{
161 bt3c_address(iobase, addr);
162
163 return bt3c_get(iobase);
164}
165
166
167
168/* ======================== Interrupt handling ======================== */
169
170
171static int bt3c_write(unsigned int iobase, int fifo_size, __u8 *buf, int len)
172{
173 int actual = 0;
174
175 bt3c_address(iobase, 0x7080);
176
177 /* Fill FIFO with current frame */
178 while (actual < len) {
179 /* Transmit next byte */
180 bt3c_put(iobase, buf[actual]);
181 actual++;
182 }
183
184 bt3c_io_write(iobase, 0x7005, actual);
185
186 return actual;
187}
188
189
190static void bt3c_write_wakeup(bt3c_info_t *info)
191{
192 if (!info) {
193 BT_ERR("Unknown device");
194 return;
195 }
196
197 if (test_and_set_bit(XMIT_SENDING, &(info->tx_state)))
198 return;
199
200 do {
201 register unsigned int iobase = info->link.io.BasePort1;
202 register struct sk_buff *skb;
203 register int len;
204
205 if (!(info->link.state & DEV_PRESENT))
206 break;
207
208
209 if (!(skb = skb_dequeue(&(info->txq)))) {
210 clear_bit(XMIT_SENDING, &(info->tx_state));
211 break;
212 }
213
214 /* Send frame */
215 len = bt3c_write(iobase, 256, skb->data, skb->len);
216
217 if (len != skb->len) {
218 BT_ERR("Very strange");
219 }
220
221 kfree_skb(skb);
222
223 info->hdev->stat.byte_tx += len;
224
225 } while (0);
226}
227
228
229static void bt3c_receive(bt3c_info_t *info)
230{
231 unsigned int iobase;
232 int size = 0, avail;
233
234 if (!info) {
235 BT_ERR("Unknown device");
236 return;
237 }
238
239 iobase = info->link.io.BasePort1;
240
241 avail = bt3c_read(iobase, 0x7006);
242 //printk("bt3c_cs: receiving %d bytes\n", avail);
243
244 bt3c_address(iobase, 0x7480);
245 while (size < avail) {
246 size++;
247 info->hdev->stat.byte_rx++;
248
249 /* Allocate packet */
250 if (info->rx_skb == NULL) {
251 info->rx_state = RECV_WAIT_PACKET_TYPE;
252 info->rx_count = 0;
253 if (!(info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
254 BT_ERR("Can't allocate mem for new packet");
255 return;
256 }
257 }
258
259
260 if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
261
262 info->rx_skb->dev = (void *) info->hdev;
263 info->rx_skb->pkt_type = inb(iobase + DATA_L);
264 inb(iobase + DATA_H);
265 //printk("bt3c: PACKET_TYPE=%02x\n", info->rx_skb->pkt_type);
266
267 switch (info->rx_skb->pkt_type) {
268
269 case HCI_EVENT_PKT:
270 info->rx_state = RECV_WAIT_EVENT_HEADER;
271 info->rx_count = HCI_EVENT_HDR_SIZE;
272 break;
273
274 case HCI_ACLDATA_PKT:
275 info->rx_state = RECV_WAIT_ACL_HEADER;
276 info->rx_count = HCI_ACL_HDR_SIZE;
277 break;
278
279 case HCI_SCODATA_PKT:
280 info->rx_state = RECV_WAIT_SCO_HEADER;
281 info->rx_count = HCI_SCO_HDR_SIZE;
282 break;
283
284 default:
285 /* Unknown packet */
286 BT_ERR("Unknown HCI packet with type 0x%02x received", info->rx_skb->pkt_type);
287 info->hdev->stat.err_rx++;
288 clear_bit(HCI_RUNNING, &(info->hdev->flags));
289
290 kfree_skb(info->rx_skb);
291 info->rx_skb = NULL;
292 break;
293
294 }
295
296 } else {
297
298 __u8 x = inb(iobase + DATA_L);
299
300 *skb_put(info->rx_skb, 1) = x;
301 inb(iobase + DATA_H);
302 info->rx_count--;
303
304 if (info->rx_count == 0) {
305
306 int dlen;
307 struct hci_event_hdr *eh;
308 struct hci_acl_hdr *ah;
309 struct hci_sco_hdr *sh;
310
311 switch (info->rx_state) {
312
313 case RECV_WAIT_EVENT_HEADER:
314 eh = (struct hci_event_hdr *)(info->rx_skb->data);
315 info->rx_state = RECV_WAIT_DATA;
316 info->rx_count = eh->plen;
317 break;
318
319 case RECV_WAIT_ACL_HEADER:
320 ah = (struct hci_acl_hdr *)(info->rx_skb->data);
321 dlen = __le16_to_cpu(ah->dlen);
322 info->rx_state = RECV_WAIT_DATA;
323 info->rx_count = dlen;
324 break;
325
326 case RECV_WAIT_SCO_HEADER:
327 sh = (struct hci_sco_hdr *)(info->rx_skb->data);
328 info->rx_state = RECV_WAIT_DATA;
329 info->rx_count = sh->dlen;
330 break;
331
332 case RECV_WAIT_DATA:
333 hci_recv_frame(info->rx_skb);
334 info->rx_skb = NULL;
335 break;
336
337 }
338
339 }
340
341 }
342
343 }
344
345 bt3c_io_write(iobase, 0x7006, 0x0000);
346}
347
348
349static irqreturn_t bt3c_interrupt(int irq, void *dev_inst, struct pt_regs *regs)
350{
351 bt3c_info_t *info = dev_inst;
352 unsigned int iobase;
353 int iir;
354
355 if (!info || !info->hdev) {
356 BT_ERR("Call of irq %d for unknown device", irq);
357 return IRQ_NONE;
358 }
359
360 iobase = info->link.io.BasePort1;
361
362 spin_lock(&(info->lock));
363
364 iir = inb(iobase + CONTROL);
365 if (iir & 0x80) {
366 int stat = bt3c_read(iobase, 0x7001);
367
368 if ((stat & 0xff) == 0x7f) {
369 BT_ERR("Very strange (stat=0x%04x)", stat);
370 } else if ((stat & 0xff) != 0xff) {
371 if (stat & 0x0020) {
372 int stat = bt3c_read(iobase, 0x7002) & 0x10;
373 BT_INFO("%s: Antenna %s", info->hdev->name,
374 stat ? "out" : "in");
375 }
376 if (stat & 0x0001)
377 bt3c_receive(info);
378 if (stat & 0x0002) {
379 //BT_ERR("Ack (stat=0x%04x)", stat);
380 clear_bit(XMIT_SENDING, &(info->tx_state));
381 bt3c_write_wakeup(info);
382 }
383
384 bt3c_io_write(iobase, 0x7001, 0x0000);
385
386 outb(iir, iobase + CONTROL);
387 }
388 }
389
390 spin_unlock(&(info->lock));
391
392 return IRQ_HANDLED;
393}
394
395
396
397/* ======================== HCI interface ======================== */
398
399
400static int bt3c_hci_flush(struct hci_dev *hdev)
401{
402 bt3c_info_t *info = (bt3c_info_t *)(hdev->driver_data);
403
404 /* Drop TX queue */
405 skb_queue_purge(&(info->txq));
406
407 return 0;
408}
409
410
411static int bt3c_hci_open(struct hci_dev *hdev)
412{
413 set_bit(HCI_RUNNING, &(hdev->flags));
414
415 return 0;
416}
417
418
419static int bt3c_hci_close(struct hci_dev *hdev)
420{
421 if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
422 return 0;
423
424 bt3c_hci_flush(hdev);
425
426 return 0;
427}
428
429
430static int bt3c_hci_send_frame(struct sk_buff *skb)
431{
432 bt3c_info_t *info;
433 struct hci_dev *hdev = (struct hci_dev *)(skb->dev);
434 unsigned long flags;
435
436 if (!hdev) {
437 BT_ERR("Frame for unknown HCI device (hdev=NULL)");
438 return -ENODEV;
439 }
440
441 info = (bt3c_info_t *) (hdev->driver_data);
442
443 switch (skb->pkt_type) {
444 case HCI_COMMAND_PKT:
445 hdev->stat.cmd_tx++;
446 break;
447 case HCI_ACLDATA_PKT:
448 hdev->stat.acl_tx++;
449 break;
450 case HCI_SCODATA_PKT:
451 hdev->stat.sco_tx++;
452 break;
453 };
454
455 /* Prepend skb with frame type */
456 memcpy(skb_push(skb, 1), &(skb->pkt_type), 1);
457 skb_queue_tail(&(info->txq), skb);
458
459 spin_lock_irqsave(&(info->lock), flags);
460
461 bt3c_write_wakeup(info);
462
463 spin_unlock_irqrestore(&(info->lock), flags);
464
465 return 0;
466}
467
468
469static void bt3c_hci_destruct(struct hci_dev *hdev)
470{
471}
472
473
474static int bt3c_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
475{
476 return -ENOIOCTLCMD;
477}
478
479
480
481/* ======================== Card services HCI interaction ======================== */
482
483
484static struct device *bt3c_device(void)
485{
486 static struct device dev = {
487 .bus_id = "pcmcia",
488 };
489 kobject_set_name(&dev.kobj, "bt3c");
490 kobject_init(&dev.kobj);
491
492 return &dev;
493}
494
495
496static int bt3c_load_firmware(bt3c_info_t *info, unsigned char *firmware, int count)
497{
498 char *ptr = (char *) firmware;
499 char b[9];
500 unsigned int iobase, size, addr, fcs, tmp;
501 int i, err = 0;
502
503 iobase = info->link.io.BasePort1;
504
505 /* Reset */
506 bt3c_io_write(iobase, 0x8040, 0x0404);
507 bt3c_io_write(iobase, 0x8040, 0x0400);
508
509 udelay(1);
510
511 bt3c_io_write(iobase, 0x8040, 0x0404);
512
513 udelay(17);
514
515 /* Load */
516 while (count) {
517 if (ptr[0] != 'S') {
518 BT_ERR("Bad address in firmware");
519 err = -EFAULT;
520 goto error;
521 }
522
523 memset(b, 0, sizeof(b));
524 memcpy(b, ptr + 2, 2);
525 size = simple_strtol(b, NULL, 16);
526
527 memset(b, 0, sizeof(b));
528 memcpy(b, ptr + 4, 8);
529 addr = simple_strtol(b, NULL, 16);
530
531 memset(b, 0, sizeof(b));
532 memcpy(b, ptr + (size * 2) + 2, 2);
533 fcs = simple_strtol(b, NULL, 16);
534
535 memset(b, 0, sizeof(b));
536 for (tmp = 0, i = 0; i < size; i++) {
537 memcpy(b, ptr + (i * 2) + 2, 2);
538 tmp += simple_strtol(b, NULL, 16);
539 }
540
541 if (((tmp + fcs) & 0xff) != 0xff) {
542 BT_ERR("Checksum error in firmware");
543 err = -EILSEQ;
544 goto error;
545 }
546
547 if (ptr[1] == '3') {
548 bt3c_address(iobase, addr);
549
550 memset(b, 0, sizeof(b));
551 for (i = 0; i < (size - 4) / 2; i++) {
552 memcpy(b, ptr + (i * 4) + 12, 4);
553 tmp = simple_strtol(b, NULL, 16);
554 bt3c_put(iobase, tmp);
555 }
556 }
557
558 ptr += (size * 2) + 6;
559 count -= (size * 2) + 6;
560 }
561
562 udelay(17);
563
564 /* Boot */
565 bt3c_address(iobase, 0x3000);
566 outb(inb(iobase + CONTROL) | 0x40, iobase + CONTROL);
567
568error:
569 udelay(17);
570
571 /* Clear */
572 bt3c_io_write(iobase, 0x7006, 0x0000);
573 bt3c_io_write(iobase, 0x7005, 0x0000);
574 bt3c_io_write(iobase, 0x7001, 0x0000);
575
576 return err;
577}
578
579
580static int bt3c_open(bt3c_info_t *info)
581{
582 const struct firmware *firmware;
583 struct hci_dev *hdev;
584 int err;
585
586 spin_lock_init(&(info->lock));
587
588 skb_queue_head_init(&(info->txq));
589
590 info->rx_state = RECV_WAIT_PACKET_TYPE;
591 info->rx_count = 0;
592 info->rx_skb = NULL;
593
594 /* Initialize HCI device */
595 hdev = hci_alloc_dev();
596 if (!hdev) {
597 BT_ERR("Can't allocate HCI device");
598 return -ENOMEM;
599 }
600
601 info->hdev = hdev;
602
603 hdev->type = HCI_PCCARD;
604 hdev->driver_data = info;
605
606 hdev->open = bt3c_hci_open;
607 hdev->close = bt3c_hci_close;
608 hdev->flush = bt3c_hci_flush;
609 hdev->send = bt3c_hci_send_frame;
610 hdev->destruct = bt3c_hci_destruct;
611 hdev->ioctl = bt3c_hci_ioctl;
612
613 hdev->owner = THIS_MODULE;
614
615 /* Load firmware */
616 err = request_firmware(&firmware, "BT3CPCC.bin", bt3c_device());
617 if (err < 0) {
618 BT_ERR("Firmware request failed");
619 goto error;
620 }
621
622 err = bt3c_load_firmware(info, firmware->data, firmware->size);
623
624 release_firmware(firmware);
625
626 if (err < 0) {
627 BT_ERR("Firmware loading failed");
628 goto error;
629 }
630
631 /* Timeout before it is safe to send the first HCI packet */
632 msleep(1000);
633
634 /* Register HCI device */
635 err = hci_register_dev(hdev);
636 if (err < 0) {
637 BT_ERR("Can't register HCI device");
638 goto error;
639 }
640
641 return 0;
642
643error:
644 info->hdev = NULL;
645 hci_free_dev(hdev);
646 return err;
647}
648
649
650static int bt3c_close(bt3c_info_t *info)
651{
652 struct hci_dev *hdev = info->hdev;
653
654 if (!hdev)
655 return -ENODEV;
656
657 bt3c_hci_close(hdev);
658
659 if (hci_unregister_dev(hdev) < 0)
660 BT_ERR("Can't unregister HCI device %s", hdev->name);
661
662 hci_free_dev(hdev);
663
664 return 0;
665}
666
667static dev_link_t *bt3c_attach(void)
668{
669 bt3c_info_t *info;
670 client_reg_t client_reg;
671 dev_link_t *link;
672 int ret;
673
674 /* Create new info device */
675 info = kmalloc(sizeof(*info), GFP_KERNEL);
676 if (!info)
677 return NULL;
678 memset(info, 0, sizeof(*info));
679
680 link = &info->link;
681 link->priv = info;
682
683 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
684 link->io.NumPorts1 = 8;
685 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
686 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
687
688 link->irq.Handler = bt3c_interrupt;
689 link->irq.Instance = info;
690
691 link->conf.Attributes = CONF_ENABLE_IRQ;
692 link->conf.Vcc = 50;
693 link->conf.IntType = INT_MEMORY_AND_IO;
694
695 /* Register with Card Services */
696 link->next = dev_list;
697 dev_list = link;
698 client_reg.dev_info = &dev_info;
699 client_reg.EventMask =
700 CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
701 CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
702 CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
703 client_reg.event_handler = &bt3c_event;
704 client_reg.Version = 0x0210;
705 client_reg.event_callback_args.client_data = link;
706
707 ret = pcmcia_register_client(&link->handle, &client_reg);
708 if (ret != CS_SUCCESS) {
709 cs_error(link->handle, RegisterClient, ret);
710 bt3c_detach(link);
711 return NULL;
712 }
713
714 return link;
715}
716
717
718static void bt3c_detach(dev_link_t *link)
719{
720 bt3c_info_t *info = link->priv;
721 dev_link_t **linkp;
722 int ret;
723
724 /* Locate device structure */
725 for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
726 if (*linkp == link)
727 break;
728
729 if (*linkp == NULL)
730 return;
731
732 if (link->state & DEV_CONFIG)
733 bt3c_release(link);
734
735 if (link->handle) {
736 ret = pcmcia_deregister_client(link->handle);
737 if (ret != CS_SUCCESS)
738 cs_error(link->handle, DeregisterClient, ret);
739 }
740
741 /* Unlink device structure, free bits */
742 *linkp = link->next;
743
744 kfree(info);
745}
746
747static int get_tuple(client_handle_t handle, tuple_t *tuple, cisparse_t *parse)
748{
749 int i;
750
751 i = pcmcia_get_tuple_data(handle, tuple);
752 if (i != CS_SUCCESS)
753 return i;
754
755 return pcmcia_parse_tuple(handle, tuple, parse);
756}
757
758static int first_tuple(client_handle_t handle, tuple_t *tuple, cisparse_t *parse)
759{
760 if (pcmcia_get_first_tuple(handle, tuple) != CS_SUCCESS)
761 return CS_NO_MORE_ITEMS;
762 return get_tuple(handle, tuple, parse);
763}
764
765static int next_tuple(client_handle_t handle, tuple_t *tuple, cisparse_t *parse)
766{
767 if (pcmcia_get_next_tuple(handle, tuple) != CS_SUCCESS)
768 return CS_NO_MORE_ITEMS;
769 return get_tuple(handle, tuple, parse);
770}
771
772static void bt3c_config(dev_link_t *link)
773{
774 static kio_addr_t base[5] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8, 0x0 };
775 client_handle_t handle = link->handle;
776 bt3c_info_t *info = link->priv;
777 tuple_t tuple;
778 u_short buf[256];
779 cisparse_t parse;
780 cistpl_cftable_entry_t *cf = &parse.cftable_entry;
781 config_info_t config;
782 int i, j, try, last_ret, last_fn;
783
784 tuple.TupleData = (cisdata_t *)buf;
785 tuple.TupleOffset = 0;
786 tuple.TupleDataMax = 255;
787 tuple.Attributes = 0;
788
789 /* Get configuration register information */
790 tuple.DesiredTuple = CISTPL_CONFIG;
791 last_ret = first_tuple(handle, &tuple, &parse);
792 if (last_ret != CS_SUCCESS) {
793 last_fn = ParseTuple;
794 goto cs_failed;
795 }
796 link->conf.ConfigBase = parse.config.base;
797 link->conf.Present = parse.config.rmask[0];
798
799 /* Configure card */
800 link->state |= DEV_CONFIG;
801 i = pcmcia_get_configuration_info(handle, &config);
802 link->conf.Vcc = config.Vcc;
803
804 /* First pass: look for a config entry that looks normal. */
805 tuple.TupleData = (cisdata_t *)buf;
806 tuple.TupleOffset = 0;
807 tuple.TupleDataMax = 255;
808 tuple.Attributes = 0;
809 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
810 /* Two tries: without IO aliases, then with aliases */
811 for (try = 0; try < 2; try++) {
812 i = first_tuple(handle, &tuple, &parse);
813 while (i != CS_NO_MORE_ITEMS) {
814 if (i != CS_SUCCESS)
815 goto next_entry;
816 if (cf->vpp1.present & (1 << CISTPL_POWER_VNOM))
817 link->conf.Vpp1 = link->conf.Vpp2 = cf->vpp1.param[CISTPL_POWER_VNOM] / 10000;
818 if ((cf->io.nwin > 0) && (cf->io.win[0].len == 8) && (cf->io.win[0].base != 0)) {
819 link->conf.ConfigIndex = cf->index;
820 link->io.BasePort1 = cf->io.win[0].base;
821 link->io.IOAddrLines = (try == 0) ? 16 : cf->io.flags & CISTPL_IO_LINES_MASK;
822 i = pcmcia_request_io(link->handle, &link->io);
823 if (i == CS_SUCCESS)
824 goto found_port;
825 }
826next_entry:
827 i = next_tuple(handle, &tuple, &parse);
828 }
829 }
830
831 /* Second pass: try to find an entry that isn't picky about
832 its base address, then try to grab any standard serial port
833 address, and finally try to get any free port. */
834 i = first_tuple(handle, &tuple, &parse);
835 while (i != CS_NO_MORE_ITEMS) {
836 if ((i == CS_SUCCESS) && (cf->io.nwin > 0) && ((cf->io.flags & CISTPL_IO_LINES_MASK) <= 3)) {
837 link->conf.ConfigIndex = cf->index;
838 for (j = 0; j < 5; j++) {
839 link->io.BasePort1 = base[j];
840 link->io.IOAddrLines = base[j] ? 16 : 3;
841 i = pcmcia_request_io(link->handle, &link->io);
842 if (i == CS_SUCCESS)
843 goto found_port;
844 }
845 }
846 i = next_tuple(handle, &tuple, &parse);
847 }
848
849found_port:
850 if (i != CS_SUCCESS) {
851 BT_ERR("No usable port range found");
852 cs_error(link->handle, RequestIO, i);
853 goto failed;
854 }
855
856 i = pcmcia_request_irq(link->handle, &link->irq);
857 if (i != CS_SUCCESS) {
858 cs_error(link->handle, RequestIRQ, i);
859 link->irq.AssignedIRQ = 0;
860 }
861
862 i = pcmcia_request_configuration(link->handle, &link->conf);
863 if (i != CS_SUCCESS) {
864 cs_error(link->handle, RequestConfiguration, i);
865 goto failed;
866 }
867
868 if (bt3c_open(info) != 0)
869 goto failed;
870
871 strcpy(info->node.dev_name, info->hdev->name);
872 link->dev = &info->node;
873 link->state &= ~DEV_CONFIG_PENDING;
874
875 return;
876
877cs_failed:
878 cs_error(link->handle, last_fn, last_ret);
879
880failed:
881 bt3c_release(link);
882}
883
884
885static void bt3c_release(dev_link_t *link)
886{
887 bt3c_info_t *info = link->priv;
888
889 if (link->state & DEV_PRESENT)
890 bt3c_close(info);
891
892 link->dev = NULL;
893
894 pcmcia_release_configuration(link->handle);
895 pcmcia_release_io(link->handle, &link->io);
896 pcmcia_release_irq(link->handle, &link->irq);
897
898 link->state &= ~DEV_CONFIG;
899}
900
901
902static int bt3c_event(event_t event, int priority, event_callback_args_t *args)
903{
904 dev_link_t *link = args->client_data;
905 bt3c_info_t *info = link->priv;
906
907 switch (event) {
908 case CS_EVENT_CARD_REMOVAL:
909 link->state &= ~DEV_PRESENT;
910 if (link->state & DEV_CONFIG) {
911 bt3c_close(info);
912 bt3c_release(link);
913 }
914 break;
915 case CS_EVENT_CARD_INSERTION:
916 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
917 bt3c_config(link);
918 break;
919 case CS_EVENT_PM_SUSPEND:
920 link->state |= DEV_SUSPEND;
921 /* Fall through... */
922 case CS_EVENT_RESET_PHYSICAL:
923 if (link->state & DEV_CONFIG)
924 pcmcia_release_configuration(link->handle);
925 break;
926 case CS_EVENT_PM_RESUME:
927 link->state &= ~DEV_SUSPEND;
928 /* Fall through... */
929 case CS_EVENT_CARD_RESET:
930 if (DEV_OK(link))
931 pcmcia_request_configuration(link->handle, &link->conf);
932 break;
933 }
934
935 return 0;
936}
937
938static struct pcmcia_driver bt3c_driver = {
939 .owner = THIS_MODULE,
940 .drv = {
941 .name = "bt3c_cs",
942 },
943 .attach = bt3c_attach,
944 .detach = bt3c_detach,
945};
946
947static int __init init_bt3c_cs(void)
948{
949 return pcmcia_register_driver(&bt3c_driver);
950}
951
952
953static void __exit exit_bt3c_cs(void)
954{
955 pcmcia_unregister_driver(&bt3c_driver);
956 BUG_ON(dev_list != NULL);
957}
958
959module_init(init_bt3c_cs);
960module_exit(exit_bt3c_cs);
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-12 04:47:37 -0500