1 /*
2 * Driver for AVM Fritz!PCI, Fritz!PCI v2, Fritz!PnP ISDN cards
3 *
4 * Author Kai Germaschewski
5 * Copyright 2001 by Kai Germaschewski <kai.germaschewski@gmx.de>
6 * 2001 by Karsten Keil <keil@isdn4linux.de>
7 *
8 * based upon Karsten Keil's original avm_pci.c driver
9 *
10 * This software may be used and distributed according to the terms
11 * of the GNU General Public License, incorporated herein by reference.
12 *
13 * Thanks to Wizard Computersysteme GmbH, Bremervoerde and
14 * SoHaNet Technology GmbH, Berlin
15 * for supporting the development of this driver
16 */
17
18
19 /* TODO:
20 *
21 * o POWER PC
22 * o clean up debugging
23 * o tx_skb at PH_DEACTIVATE time
24 */
25
26 #include <linux/module.h>
27 #include <linux/init.h>
28 #include <linux/interrupt.h>
29 #include <linux/pci.h>
30 #include <linux/isapnp.h>
31 #include <linux/kmod.h>
32 #include <linux/slab.h>
33 #include <linux/skbuff.h>
34 #include <linux/netdevice.h>
35 #include <linux/delay.h>
36
37 #include <asm/io.h>
38
39 #include "hisax_fcpcipnp.h"
40
41 // debugging cruft
42 #define __debug_variable debug
43 #include "hisax_debug.h"
44
45 #ifdef CONFIG_HISAX_DEBUG
46 static int debug = 0;
47 /* static int hdlcfifosize = 32; */
48 module_param(debug, int, 0);
49 /* module_param(hdlcfifosize, int, 0); */
50 #endif
51
52 MODULE_AUTHOR("Kai Germaschewski <kai.germaschewski@gmx.de>/Karsten Keil <kkeil@suse.de>");
53 MODULE_DESCRIPTION("AVM Fritz!PCI/PnP ISDN driver");
54
55 static const struct pci_device_id fcpci_ids[] = {
56 { .vendor = PCI_VENDOR_ID_AVM,
57 .device = PCI_DEVICE_ID_AVM_A1,
58 .subvendor = PCI_ANY_ID,
59 .subdevice = PCI_ANY_ID,
60 .driver_data = (unsigned long) "Fritz!Card PCI",
61 },
62 { .vendor = PCI_VENDOR_ID_AVM,
63 .device = PCI_DEVICE_ID_AVM_A1_V2,
64 .subvendor = PCI_ANY_ID,
65 .subdevice = PCI_ANY_ID,
66 .driver_data = (unsigned long) "Fritz!Card PCI v2" },
67 {}
68 };
69
70 MODULE_DEVICE_TABLE(pci, fcpci_ids);
71
72 #ifdef CONFIG_PNP
73 static struct pnp_device_id fcpnp_ids[] = {
74 {
75 .id = "AVM0900",
76 .driver_data = (unsigned long) "Fritz!Card PnP",
77 },
78 { .id = "" }
79 };
80
81 MODULE_DEVICE_TABLE(pnp, fcpnp_ids);
82 #endif
83
84 static int protocol = 2; /* EURO-ISDN Default */
85 module_param(protocol, int, 0);
86 MODULE_LICENSE("GPL");
87
88 // ----------------------------------------------------------------------
89
90 #define AVM_INDEX 0x04
91 #define AVM_DATA 0x10
92
93 #define AVM_IDX_HDLC_1 0x00
94 #define AVM_IDX_HDLC_2 0x01
95 #define AVM_IDX_ISAC_FIFO 0x02
96 #define AVM_IDX_ISAC_REG_LOW 0x04
97 #define AVM_IDX_ISAC_REG_HIGH 0x06
98
99 #define AVM_STATUS0 0x02
100
101 #define AVM_STATUS0_IRQ_ISAC 0x01
102 #define AVM_STATUS0_IRQ_HDLC 0x02
103 #define AVM_STATUS0_IRQ_TIMER 0x04
104 #define AVM_STATUS0_IRQ_MASK 0x07
105
106 #define AVM_STATUS0_RESET 0x01
107 #define AVM_STATUS0_DIS_TIMER 0x02
108 #define AVM_STATUS0_RES_TIMER 0x04
109 #define AVM_STATUS0_ENA_IRQ 0x08
110 #define AVM_STATUS0_TESTBIT 0x10
111
112 #define AVM_STATUS1 0x03
113 #define AVM_STATUS1_ENA_IOM 0x80
114
115 #define HDLC_FIFO 0x0
116 #define HDLC_STATUS 0x4
117 #define HDLC_CTRL 0x4
118
119 #define HDLC_MODE_ITF_FLG 0x01
120 #define HDLC_MODE_TRANS 0x02
121 #define HDLC_MODE_CCR_7 0x04
122 #define HDLC_MODE_CCR_16 0x08
123 #define HDLC_MODE_TESTLOOP 0x80
124
125 #define HDLC_INT_XPR 0x80
126 #define HDLC_INT_XDU 0x40
127 #define HDLC_INT_RPR 0x20
128 #define HDLC_INT_MASK 0xE0
129
130 #define HDLC_STAT_RME 0x01
131 #define HDLC_STAT_RDO 0x10
132 #define HDLC_STAT_CRCVFRRAB 0x0E
133 #define HDLC_STAT_CRCVFR 0x06
134 #define HDLC_STAT_RML_MASK 0xff00
135
136 #define HDLC_CMD_XRS 0x80
137 #define HDLC_CMD_XME 0x01
138 #define HDLC_CMD_RRS 0x20
139 #define HDLC_CMD_XML_MASK 0xff00
140
141 #define AVM_HDLC_FIFO_1 0x10
142 #define AVM_HDLC_FIFO_2 0x18
143
144 #define AVM_HDLC_STATUS_1 0x14
145 #define AVM_HDLC_STATUS_2 0x1c
146
147 #define AVM_ISACSX_INDEX 0x04
148 #define AVM_ISACSX_DATA 0x08
149
150 // ----------------------------------------------------------------------
151 // Fritz!PCI
152
fcpci_read_isac(struct isac * isac,unsigned char offset)153 static unsigned char fcpci_read_isac(struct isac *isac, unsigned char offset)
154 {
155 struct fritz_adapter *adapter = isac->priv;
156 unsigned char idx = (offset > 0x2f) ?
157 AVM_IDX_ISAC_REG_HIGH : AVM_IDX_ISAC_REG_LOW;
158 unsigned char val;
159 unsigned long flags;
160
161 spin_lock_irqsave(&adapter->hw_lock, flags);
162 outb(idx, adapter->io + AVM_INDEX);
163 val = inb(adapter->io + AVM_DATA + (offset & 0xf));
164 spin_unlock_irqrestore(&adapter->hw_lock, flags);
165 DBG(0x1000, " port %#x, value %#x",
166 offset, val);
167 return val;
168 }
169
fcpci_write_isac(struct isac * isac,unsigned char offset,unsigned char value)170 static void fcpci_write_isac(struct isac *isac, unsigned char offset,
171 unsigned char value)
172 {
173 struct fritz_adapter *adapter = isac->priv;
174 unsigned char idx = (offset > 0x2f) ?
175 AVM_IDX_ISAC_REG_HIGH : AVM_IDX_ISAC_REG_LOW;
176 unsigned long flags;
177
178 DBG(0x1000, " port %#x, value %#x",
179 offset, value);
180 spin_lock_irqsave(&adapter->hw_lock, flags);
181 outb(idx, adapter->io + AVM_INDEX);
182 outb(value, adapter->io + AVM_DATA + (offset & 0xf));
183 spin_unlock_irqrestore(&adapter->hw_lock, flags);
184 }
185
fcpci_read_isac_fifo(struct isac * isac,unsigned char * data,int size)186 static void fcpci_read_isac_fifo(struct isac *isac, unsigned char *data,
187 int size)
188 {
189 struct fritz_adapter *adapter = isac->priv;
190 unsigned long flags;
191
192 spin_lock_irqsave(&adapter->hw_lock, flags);
193 outb(AVM_IDX_ISAC_FIFO, adapter->io + AVM_INDEX);
194 insb(adapter->io + AVM_DATA, data, size);
195 spin_unlock_irqrestore(&adapter->hw_lock, flags);
196 }
197
fcpci_write_isac_fifo(struct isac * isac,unsigned char * data,int size)198 static void fcpci_write_isac_fifo(struct isac *isac, unsigned char *data,
199 int size)
200 {
201 struct fritz_adapter *adapter = isac->priv;
202 unsigned long flags;
203
204 spin_lock_irqsave(&adapter->hw_lock, flags);
205 outb(AVM_IDX_ISAC_FIFO, adapter->io + AVM_INDEX);
206 outsb(adapter->io + AVM_DATA, data, size);
207 spin_unlock_irqrestore(&adapter->hw_lock, flags);
208 }
209
fcpci_read_hdlc_status(struct fritz_adapter * adapter,int nr)210 static u32 fcpci_read_hdlc_status(struct fritz_adapter *adapter, int nr)
211 {
212 u32 val;
213 int idx = nr ? AVM_IDX_HDLC_2 : AVM_IDX_HDLC_1;
214 unsigned long flags;
215
216 spin_lock_irqsave(&adapter->hw_lock, flags);
217 outl(idx, adapter->io + AVM_INDEX);
218 val = inl(adapter->io + AVM_DATA + HDLC_STATUS);
219 spin_unlock_irqrestore(&adapter->hw_lock, flags);
220 return val;
221 }
222
__fcpci_write_ctrl(struct fritz_bcs * bcs,int which)223 static void __fcpci_write_ctrl(struct fritz_bcs *bcs, int which)
224 {
225 struct fritz_adapter *adapter = bcs->adapter;
226 int idx = bcs->channel ? AVM_IDX_HDLC_2 : AVM_IDX_HDLC_1;
227
228 DBG(0x40, "hdlc %c wr%x ctrl %x",
229 'A' + bcs->channel, which, bcs->ctrl.ctrl);
230
231 outl(idx, adapter->io + AVM_INDEX);
232 outl(bcs->ctrl.ctrl, adapter->io + AVM_DATA + HDLC_CTRL);
233 }
234
fcpci_write_ctrl(struct fritz_bcs * bcs,int which)235 static void fcpci_write_ctrl(struct fritz_bcs *bcs, int which)
236 {
237 struct fritz_adapter *adapter = bcs->adapter;
238 unsigned long flags;
239
240 spin_lock_irqsave(&adapter->hw_lock, flags);
241 __fcpci_write_ctrl(bcs, which);
242 spin_unlock_irqrestore(&adapter->hw_lock, flags);
243 }
244
245 // ----------------------------------------------------------------------
246 // Fritz!PCI v2
247
fcpci2_read_isac(struct isac * isac,unsigned char offset)248 static unsigned char fcpci2_read_isac(struct isac *isac, unsigned char offset)
249 {
250 struct fritz_adapter *adapter = isac->priv;
251 unsigned char val;
252 unsigned long flags;
253
254 spin_lock_irqsave(&adapter->hw_lock, flags);
255 outl(offset, adapter->io + AVM_ISACSX_INDEX);
256 val = inl(adapter->io + AVM_ISACSX_DATA);
257 spin_unlock_irqrestore(&adapter->hw_lock, flags);
258 DBG(0x1000, " port %#x, value %#x",
259 offset, val);
260
261 return val;
262 }
263
fcpci2_write_isac(struct isac * isac,unsigned char offset,unsigned char value)264 static void fcpci2_write_isac(struct isac *isac, unsigned char offset,
265 unsigned char value)
266 {
267 struct fritz_adapter *adapter = isac->priv;
268 unsigned long flags;
269
270 DBG(0x1000, " port %#x, value %#x",
271 offset, value);
272 spin_lock_irqsave(&adapter->hw_lock, flags);
273 outl(offset, adapter->io + AVM_ISACSX_INDEX);
274 outl(value, adapter->io + AVM_ISACSX_DATA);
275 spin_unlock_irqrestore(&adapter->hw_lock, flags);
276 }
277
fcpci2_read_isac_fifo(struct isac * isac,unsigned char * data,int size)278 static void fcpci2_read_isac_fifo(struct isac *isac, unsigned char *data,
279 int size)
280 {
281 struct fritz_adapter *adapter = isac->priv;
282 int i;
283 unsigned long flags;
284
285 spin_lock_irqsave(&adapter->hw_lock, flags);
286 outl(0, adapter->io + AVM_ISACSX_INDEX);
287 for (i = 0; i < size; i++)
288 data[i] = inl(adapter->io + AVM_ISACSX_DATA);
289 spin_unlock_irqrestore(&adapter->hw_lock, flags);
290 }
291
fcpci2_write_isac_fifo(struct isac * isac,unsigned char * data,int size)292 static void fcpci2_write_isac_fifo(struct isac *isac, unsigned char *data,
293 int size)
294 {
295 struct fritz_adapter *adapter = isac->priv;
296 int i;
297 unsigned long flags;
298
299 spin_lock_irqsave(&adapter->hw_lock, flags);
300 outl(0, adapter->io + AVM_ISACSX_INDEX);
301 for (i = 0; i < size; i++)
302 outl(data[i], adapter->io + AVM_ISACSX_DATA);
303 spin_unlock_irqrestore(&adapter->hw_lock, flags);
304 }
305
fcpci2_read_hdlc_status(struct fritz_adapter * adapter,int nr)306 static u32 fcpci2_read_hdlc_status(struct fritz_adapter *adapter, int nr)
307 {
308 int offset = nr ? AVM_HDLC_STATUS_2 : AVM_HDLC_STATUS_1;
309
310 return inl(adapter->io + offset);
311 }
312
fcpci2_write_ctrl(struct fritz_bcs * bcs,int which)313 static void fcpci2_write_ctrl(struct fritz_bcs *bcs, int which)
314 {
315 struct fritz_adapter *adapter = bcs->adapter;
316 int offset = bcs->channel ? AVM_HDLC_STATUS_2 : AVM_HDLC_STATUS_1;
317
318 DBG(0x40, "hdlc %c wr%x ctrl %x",
319 'A' + bcs->channel, which, bcs->ctrl.ctrl);
320
321 outl(bcs->ctrl.ctrl, adapter->io + offset);
322 }
323
324 // ----------------------------------------------------------------------
325 // Fritz!PnP (ISAC access as for Fritz!PCI)
326
fcpnp_read_hdlc_status(struct fritz_adapter * adapter,int nr)327 static u32 fcpnp_read_hdlc_status(struct fritz_adapter *adapter, int nr)
328 {
329 unsigned char idx = nr ? AVM_IDX_HDLC_2 : AVM_IDX_HDLC_1;
330 u32 val;
331 unsigned long flags;
332
333 spin_lock_irqsave(&adapter->hw_lock, flags);
334 outb(idx, adapter->io + AVM_INDEX);
335 val = inb(adapter->io + AVM_DATA + HDLC_STATUS);
336 if (val & HDLC_INT_RPR)
337 val |= inb(adapter->io + AVM_DATA + HDLC_STATUS + 1) << 8;
338 spin_unlock_irqrestore(&adapter->hw_lock, flags);
339 return val;
340 }
341
__fcpnp_write_ctrl(struct fritz_bcs * bcs,int which)342 static void __fcpnp_write_ctrl(struct fritz_bcs *bcs, int which)
343 {
344 struct fritz_adapter *adapter = bcs->adapter;
345 unsigned char idx = bcs->channel ? AVM_IDX_HDLC_2 : AVM_IDX_HDLC_1;
346
347 DBG(0x40, "hdlc %c wr%x ctrl %x",
348 'A' + bcs->channel, which, bcs->ctrl.ctrl);
349
350 outb(idx, adapter->io + AVM_INDEX);
351 if (which & 4)
352 outb(bcs->ctrl.sr.mode,
353 adapter->io + AVM_DATA + HDLC_STATUS + 2);
354 if (which & 2)
355 outb(bcs->ctrl.sr.xml,
356 adapter->io + AVM_DATA + HDLC_STATUS + 1);
357 if (which & 1)
358 outb(bcs->ctrl.sr.cmd,
359 adapter->io + AVM_DATA + HDLC_STATUS + 0);
360 }
361
fcpnp_write_ctrl(struct fritz_bcs * bcs,int which)362 static void fcpnp_write_ctrl(struct fritz_bcs *bcs, int which)
363 {
364 struct fritz_adapter *adapter = bcs->adapter;
365 unsigned long flags;
366
367 spin_lock_irqsave(&adapter->hw_lock, flags);
368 __fcpnp_write_ctrl(bcs, which);
369 spin_unlock_irqrestore(&adapter->hw_lock, flags);
370 }
371
372 // ----------------------------------------------------------------------
373
B_L1L2(struct fritz_bcs * bcs,int pr,void * arg)374 static inline void B_L1L2(struct fritz_bcs *bcs, int pr, void *arg)
375 {
376 struct hisax_if *ifc = (struct hisax_if *) &bcs->b_if;
377
378 DBG(2, "pr %#x", pr);
379 ifc->l1l2(ifc, pr, arg);
380 }
381
hdlc_fill_fifo(struct fritz_bcs * bcs)382 static void hdlc_fill_fifo(struct fritz_bcs *bcs)
383 {
384 struct fritz_adapter *adapter = bcs->adapter;
385 struct sk_buff *skb = bcs->tx_skb;
386 int count;
387 unsigned long flags;
388 unsigned char *p;
389
390 DBG(0x40, "hdlc_fill_fifo");
391
392 BUG_ON(skb->len == 0);
393
394 bcs->ctrl.sr.cmd &= ~HDLC_CMD_XME;
395 if (bcs->tx_skb->len > bcs->fifo_size) {
396 count = bcs->fifo_size;
397 } else {
398 count = bcs->tx_skb->len;
399 if (bcs->mode != L1_MODE_TRANS)
400 bcs->ctrl.sr.cmd |= HDLC_CMD_XME;
401 }
402 DBG(0x40, "hdlc_fill_fifo %d/%d", count, bcs->tx_skb->len);
403 p = bcs->tx_skb->data;
404 skb_pull(bcs->tx_skb, count);
405 bcs->tx_cnt += count;
406 bcs->ctrl.sr.xml = ((count == bcs->fifo_size) ? 0 : count);
407
408 switch (adapter->type) {
409 case AVM_FRITZ_PCI:
410 spin_lock_irqsave(&adapter->hw_lock, flags);
411 // sets the correct AVM_INDEX, too
412 __fcpci_write_ctrl(bcs, 3);
413 outsl(adapter->io + AVM_DATA + HDLC_FIFO,
414 p, (count + 3) / 4);
415 spin_unlock_irqrestore(&adapter->hw_lock, flags);
416 break;
417 case AVM_FRITZ_PCIV2:
418 fcpci2_write_ctrl(bcs, 3);
419 outsl(adapter->io +
420 (bcs->channel ? AVM_HDLC_FIFO_2 : AVM_HDLC_FIFO_1),
421 p, (count + 3) / 4);
422 break;
423 case AVM_FRITZ_PNP:
424 spin_lock_irqsave(&adapter->hw_lock, flags);
425 // sets the correct AVM_INDEX, too
426 __fcpnp_write_ctrl(bcs, 3);
427 outsb(adapter->io + AVM_DATA, p, count);
428 spin_unlock_irqrestore(&adapter->hw_lock, flags);
429 break;
430 }
431 }
432
hdlc_empty_fifo(struct fritz_bcs * bcs,int count)433 static inline void hdlc_empty_fifo(struct fritz_bcs *bcs, int count)
434 {
435 struct fritz_adapter *adapter = bcs->adapter;
436 unsigned char *p;
437 unsigned char idx = bcs->channel ? AVM_IDX_HDLC_2 : AVM_IDX_HDLC_1;
438
439 DBG(0x10, "hdlc_empty_fifo %d", count);
440 if (bcs->rcvidx + count > HSCX_BUFMAX) {
441 DBG(0x10, "hdlc_empty_fifo: incoming packet too large");
442 return;
443 }
444 p = bcs->rcvbuf + bcs->rcvidx;
445 bcs->rcvidx += count;
446 switch (adapter->type) {
447 case AVM_FRITZ_PCI:
448 spin_lock(&adapter->hw_lock);
449 outl(idx, adapter->io + AVM_INDEX);
450 insl(adapter->io + AVM_DATA + HDLC_FIFO,
451 p, (count + 3) / 4);
452 spin_unlock(&adapter->hw_lock);
453 break;
454 case AVM_FRITZ_PCIV2:
455 insl(adapter->io +
456 (bcs->channel ? AVM_HDLC_FIFO_2 : AVM_HDLC_FIFO_1),
457 p, (count + 3) / 4);
458 break;
459 case AVM_FRITZ_PNP:
460 spin_lock(&adapter->hw_lock);
461 outb(idx, adapter->io + AVM_INDEX);
462 insb(adapter->io + AVM_DATA, p, count);
463 spin_unlock(&adapter->hw_lock);
464 break;
465 }
466 }
467
hdlc_rpr_irq(struct fritz_bcs * bcs,u32 stat)468 static inline void hdlc_rpr_irq(struct fritz_bcs *bcs, u32 stat)
469 {
470 struct fritz_adapter *adapter = bcs->adapter;
471 struct sk_buff *skb;
472 int len;
473
474 if (stat & HDLC_STAT_RDO) {
475 DBG(0x10, "RDO");
476 bcs->ctrl.sr.xml = 0;
477 bcs->ctrl.sr.cmd |= HDLC_CMD_RRS;
478 adapter->write_ctrl(bcs, 1);
479 bcs->ctrl.sr.cmd &= ~HDLC_CMD_RRS;
480 adapter->write_ctrl(bcs, 1);
481 bcs->rcvidx = 0;
482 return;
483 }
484
485 len = (stat & HDLC_STAT_RML_MASK) >> 8;
486 if (len == 0)
487 len = bcs->fifo_size;
488
489 hdlc_empty_fifo(bcs, len);
490
491 if ((stat & HDLC_STAT_RME) || (bcs->mode == L1_MODE_TRANS)) {
492 if (((stat & HDLC_STAT_CRCVFRRAB) == HDLC_STAT_CRCVFR) ||
493 (bcs->mode == L1_MODE_TRANS)) {
494 skb = dev_alloc_skb(bcs->rcvidx);
495 if (!skb) {
496 printk(KERN_WARNING "HDLC: receive out of memory\n");
497 } else {
498 skb_put_data(skb, bcs->rcvbuf, bcs->rcvidx);
499 DBG_SKB(1, skb);
500 B_L1L2(bcs, PH_DATA | INDICATION, skb);
501 }
502 bcs->rcvidx = 0;
503 } else {
504 DBG(0x10, "ch%d invalid frame %#x",
505 bcs->channel, stat);
506 bcs->rcvidx = 0;
507 }
508 }
509 }
510
hdlc_xdu_irq(struct fritz_bcs * bcs)511 static inline void hdlc_xdu_irq(struct fritz_bcs *bcs)
512 {
513 struct fritz_adapter *adapter = bcs->adapter;
514
515
516 /* Here we lost an TX interrupt, so
517 * restart transmitting the whole frame.
518 */
519 bcs->ctrl.sr.xml = 0;
520 bcs->ctrl.sr.cmd |= HDLC_CMD_XRS;
521 adapter->write_ctrl(bcs, 1);
522 bcs->ctrl.sr.cmd &= ~HDLC_CMD_XRS;
523
524 if (!bcs->tx_skb) {
525 DBG(0x10, "XDU without skb");
526 adapter->write_ctrl(bcs, 1);
527 return;
528 }
529 /* only hdlc restarts the frame, transparent mode must continue */
530 if (bcs->mode == L1_MODE_HDLC) {
531 skb_push(bcs->tx_skb, bcs->tx_cnt);
532 bcs->tx_cnt = 0;
533 }
534 }
535
hdlc_xpr_irq(struct fritz_bcs * bcs)536 static inline void hdlc_xpr_irq(struct fritz_bcs *bcs)
537 {
538 struct sk_buff *skb;
539
540 skb = bcs->tx_skb;
541 if (!skb)
542 return;
543
544 if (skb->len) {
545 hdlc_fill_fifo(bcs);
546 return;
547 }
548 bcs->tx_cnt = 0;
549 bcs->tx_skb = NULL;
550 B_L1L2(bcs, PH_DATA | CONFIRM, (void *)(unsigned long)skb->truesize);
551 dev_kfree_skb_irq(skb);
552 }
553
hdlc_irq_one(struct fritz_bcs * bcs,u32 stat)554 static void hdlc_irq_one(struct fritz_bcs *bcs, u32 stat)
555 {
556 DBG(0x10, "ch%d stat %#x", bcs->channel, stat);
557 if (stat & HDLC_INT_RPR) {
558 DBG(0x10, "RPR");
559 hdlc_rpr_irq(bcs, stat);
560 }
561 if (stat & HDLC_INT_XDU) {
562 DBG(0x10, "XDU");
563 hdlc_xdu_irq(bcs);
564 hdlc_xpr_irq(bcs);
565 return;
566 }
567 if (stat & HDLC_INT_XPR) {
568 DBG(0x10, "XPR");
569 hdlc_xpr_irq(bcs);
570 }
571 }
572
hdlc_irq(struct fritz_adapter * adapter)573 static inline void hdlc_irq(struct fritz_adapter *adapter)
574 {
575 int nr;
576 u32 stat;
577
578 for (nr = 0; nr < 2; nr++) {
579 stat = adapter->read_hdlc_status(adapter, nr);
580 DBG(0x10, "HDLC %c stat %#x", 'A' + nr, stat);
581 if (stat & HDLC_INT_MASK)
582 hdlc_irq_one(&adapter->bcs[nr], stat);
583 }
584 }
585
modehdlc(struct fritz_bcs * bcs,int mode)586 static void modehdlc(struct fritz_bcs *bcs, int mode)
587 {
588 struct fritz_adapter *adapter = bcs->adapter;
589
590 DBG(0x40, "hdlc %c mode %d --> %d",
591 'A' + bcs->channel, bcs->mode, mode);
592
593 if (bcs->mode == mode)
594 return;
595
596 bcs->fifo_size = 32;
597 bcs->ctrl.ctrl = 0;
598 bcs->ctrl.sr.cmd = HDLC_CMD_XRS | HDLC_CMD_RRS;
599 switch (mode) {
600 case L1_MODE_NULL:
601 bcs->ctrl.sr.mode = HDLC_MODE_TRANS;
602 adapter->write_ctrl(bcs, 5);
603 break;
604 case L1_MODE_TRANS:
605 case L1_MODE_HDLC:
606 bcs->rcvidx = 0;
607 bcs->tx_cnt = 0;
608 bcs->tx_skb = NULL;
609 if (mode == L1_MODE_TRANS) {
610 bcs->ctrl.sr.mode = HDLC_MODE_TRANS;
611 } else {
612 bcs->ctrl.sr.mode = HDLC_MODE_ITF_FLG;
613 }
614 adapter->write_ctrl(bcs, 5);
615 bcs->ctrl.sr.cmd = HDLC_CMD_XRS;
616 adapter->write_ctrl(bcs, 1);
617 bcs->ctrl.sr.cmd = 0;
618 break;
619 }
620 bcs->mode = mode;
621 }
622
fritz_b_l2l1(struct hisax_if * ifc,int pr,void * arg)623 static void fritz_b_l2l1(struct hisax_if *ifc, int pr, void *arg)
624 {
625 struct fritz_bcs *bcs = ifc->priv;
626 struct sk_buff *skb = arg;
627 int mode;
628
629 DBG(0x10, "pr %#x", pr);
630
631 switch (pr) {
632 case PH_DATA | REQUEST:
633 BUG_ON(bcs->tx_skb);
634 bcs->tx_skb = skb;
635 DBG_SKB(1, skb);
636 hdlc_fill_fifo(bcs);
637 break;
638 case PH_ACTIVATE | REQUEST:
639 mode = (long) arg;
640 DBG(4, "B%d,PH_ACTIVATE_REQUEST %d", bcs->channel + 1, mode);
641 modehdlc(bcs, mode);
642 B_L1L2(bcs, PH_ACTIVATE | INDICATION, NULL);
643 break;
644 case PH_DEACTIVATE | REQUEST:
645 DBG(4, "B%d,PH_DEACTIVATE_REQUEST", bcs->channel + 1);
646 modehdlc(bcs, L1_MODE_NULL);
647 B_L1L2(bcs, PH_DEACTIVATE | INDICATION, NULL);
648 break;
649 }
650 }
651
652 // ----------------------------------------------------------------------
653
654 static irqreturn_t
fcpci2_irq(int intno,void * dev)655 fcpci2_irq(int intno, void *dev)
656 {
657 struct fritz_adapter *adapter = dev;
658 unsigned char val;
659
660 val = inb(adapter->io + AVM_STATUS0);
661 if (!(val & AVM_STATUS0_IRQ_MASK))
662 /* hopefully a shared IRQ reqest */
663 return IRQ_NONE;
664 DBG(2, "STATUS0 %#x", val);
665 if (val & AVM_STATUS0_IRQ_ISAC)
666 isacsx_irq(&adapter->isac);
667 if (val & AVM_STATUS0_IRQ_HDLC)
668 hdlc_irq(adapter);
669 if (val & AVM_STATUS0_IRQ_ISAC)
670 isacsx_irq(&adapter->isac);
671 return IRQ_HANDLED;
672 }
673
674 static irqreturn_t
fcpci_irq(int intno,void * dev)675 fcpci_irq(int intno, void *dev)
676 {
677 struct fritz_adapter *adapter = dev;
678 unsigned char sval;
679
680 sval = inb(adapter->io + 2);
681 if ((sval & AVM_STATUS0_IRQ_MASK) == AVM_STATUS0_IRQ_MASK)
682 /* possibly a shared IRQ reqest */
683 return IRQ_NONE;
684 DBG(2, "sval %#x", sval);
685 if (!(sval & AVM_STATUS0_IRQ_ISAC))
686 isac_irq(&adapter->isac);
687
688 if (!(sval & AVM_STATUS0_IRQ_HDLC))
689 hdlc_irq(adapter);
690 return IRQ_HANDLED;
691 }
692
693 // ----------------------------------------------------------------------
694
fcpci2_init(struct fritz_adapter * adapter)695 static inline void fcpci2_init(struct fritz_adapter *adapter)
696 {
697 outb(AVM_STATUS0_RES_TIMER, adapter->io + AVM_STATUS0);
698 outb(AVM_STATUS0_ENA_IRQ, adapter->io + AVM_STATUS0);
699
700 }
701
fcpci_init(struct fritz_adapter * adapter)702 static inline void fcpci_init(struct fritz_adapter *adapter)
703 {
704 outb(AVM_STATUS0_DIS_TIMER | AVM_STATUS0_RES_TIMER |
705 AVM_STATUS0_ENA_IRQ, adapter->io + AVM_STATUS0);
706
707 outb(AVM_STATUS1_ENA_IOM | adapter->irq,
708 adapter->io + AVM_STATUS1);
709 mdelay(10);
710 }
711
712 // ----------------------------------------------------------------------
713
fcpcipnp_setup(struct fritz_adapter * adapter)714 static int fcpcipnp_setup(struct fritz_adapter *adapter)
715 {
716 u32 val = 0;
717 int retval;
718
719 DBG(1, "");
720
721 isac_init(&adapter->isac); // FIXME is this okay now
722
723 retval = -EBUSY;
724 if (!request_region(adapter->io, 32, "fcpcipnp"))
725 goto err;
726
727 switch (adapter->type) {
728 case AVM_FRITZ_PCIV2:
729 case AVM_FRITZ_PCI:
730 val = inl(adapter->io);
731 break;
732 case AVM_FRITZ_PNP:
733 val = inb(adapter->io);
734 val |= inb(adapter->io + 1) << 8;
735 break;
736 }
737
738 DBG(1, "stat %#x Class %X Rev %d",
739 val, val & 0xff, (val >> 8) & 0xff);
740
741 spin_lock_init(&adapter->hw_lock);
742 adapter->isac.priv = adapter;
743 switch (adapter->type) {
744 case AVM_FRITZ_PCIV2:
745 adapter->isac.read_isac = &fcpci2_read_isac;
746 adapter->isac.write_isac = &fcpci2_write_isac;
747 adapter->isac.read_isac_fifo = &fcpci2_read_isac_fifo;
748 adapter->isac.write_isac_fifo = &fcpci2_write_isac_fifo;
749
750 adapter->read_hdlc_status = &fcpci2_read_hdlc_status;
751 adapter->write_ctrl = &fcpci2_write_ctrl;
752 break;
753 case AVM_FRITZ_PCI:
754 adapter->isac.read_isac = &fcpci_read_isac;
755 adapter->isac.write_isac = &fcpci_write_isac;
756 adapter->isac.read_isac_fifo = &fcpci_read_isac_fifo;
757 adapter->isac.write_isac_fifo = &fcpci_write_isac_fifo;
758
759 adapter->read_hdlc_status = &fcpci_read_hdlc_status;
760 adapter->write_ctrl = &fcpci_write_ctrl;
761 break;
762 case AVM_FRITZ_PNP:
763 adapter->isac.read_isac = &fcpci_read_isac;
764 adapter->isac.write_isac = &fcpci_write_isac;
765 adapter->isac.read_isac_fifo = &fcpci_read_isac_fifo;
766 adapter->isac.write_isac_fifo = &fcpci_write_isac_fifo;
767
768 adapter->read_hdlc_status = &fcpnp_read_hdlc_status;
769 adapter->write_ctrl = &fcpnp_write_ctrl;
770 break;
771 }
772
773 // Reset
774 outb(0, adapter->io + AVM_STATUS0);
775 mdelay(10);
776 outb(AVM_STATUS0_RESET, adapter->io + AVM_STATUS0);
777 mdelay(10);
778 outb(0, adapter->io + AVM_STATUS0);
779 mdelay(10);
780
781 switch (adapter->type) {
782 case AVM_FRITZ_PCIV2:
783 retval = request_irq(adapter->irq, fcpci2_irq, IRQF_SHARED,
784 "fcpcipnp", adapter);
785 break;
786 case AVM_FRITZ_PCI:
787 retval = request_irq(adapter->irq, fcpci_irq, IRQF_SHARED,
788 "fcpcipnp", adapter);
789 break;
790 case AVM_FRITZ_PNP:
791 retval = request_irq(adapter->irq, fcpci_irq, 0,
792 "fcpcipnp", adapter);
793 break;
794 }
795 if (retval)
796 goto err_region;
797
798 switch (adapter->type) {
799 case AVM_FRITZ_PCIV2:
800 fcpci2_init(adapter);
801 isacsx_setup(&adapter->isac);
802 break;
803 case AVM_FRITZ_PCI:
804 case AVM_FRITZ_PNP:
805 fcpci_init(adapter);
806 isac_setup(&adapter->isac);
807 break;
808 }
809 val = adapter->read_hdlc_status(adapter, 0);
810 DBG(0x20, "HDLC A STA %x", val);
811 val = adapter->read_hdlc_status(adapter, 1);
812 DBG(0x20, "HDLC B STA %x", val);
813
814 adapter->bcs[0].mode = -1;
815 adapter->bcs[1].mode = -1;
816 modehdlc(&adapter->bcs[0], L1_MODE_NULL);
817 modehdlc(&adapter->bcs[1], L1_MODE_NULL);
818
819 return 0;
820
821 err_region:
822 release_region(adapter->io, 32);
823 err:
824 return retval;
825 }
826
fcpcipnp_release(struct fritz_adapter * adapter)827 static void fcpcipnp_release(struct fritz_adapter *adapter)
828 {
829 DBG(1, "");
830
831 outb(0, adapter->io + AVM_STATUS0);
832 free_irq(adapter->irq, adapter);
833 release_region(adapter->io, 32);
834 }
835
836 // ----------------------------------------------------------------------
837
new_adapter(void)838 static struct fritz_adapter *new_adapter(void)
839 {
840 struct fritz_adapter *adapter;
841 struct hisax_b_if *b_if[2];
842 int i;
843
844 adapter = kzalloc(sizeof(struct fritz_adapter), GFP_KERNEL);
845 if (!adapter)
846 return NULL;
847
848 adapter->isac.hisax_d_if.owner = THIS_MODULE;
849 adapter->isac.hisax_d_if.ifc.priv = &adapter->isac;
850 adapter->isac.hisax_d_if.ifc.l2l1 = isac_d_l2l1;
851
852 for (i = 0; i < 2; i++) {
853 adapter->bcs[i].adapter = adapter;
854 adapter->bcs[i].channel = i;
855 adapter->bcs[i].b_if.ifc.priv = &adapter->bcs[i];
856 adapter->bcs[i].b_if.ifc.l2l1 = fritz_b_l2l1;
857 }
858
859 for (i = 0; i < 2; i++)
860 b_if[i] = &adapter->bcs[i].b_if;
861
862 if (hisax_register(&adapter->isac.hisax_d_if, b_if, "fcpcipnp",
863 protocol) != 0) {
864 kfree(adapter);
865 adapter = NULL;
866 }
867
868 return adapter;
869 }
870
delete_adapter(struct fritz_adapter * adapter)871 static void delete_adapter(struct fritz_adapter *adapter)
872 {
873 hisax_unregister(&adapter->isac.hisax_d_if);
874 kfree(adapter);
875 }
876
fcpci_probe(struct pci_dev * pdev,const struct pci_device_id * ent)877 static int fcpci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
878 {
879 struct fritz_adapter *adapter;
880 int retval;
881
882 retval = -ENOMEM;
883 adapter = new_adapter();
884 if (!adapter)
885 goto err;
886
887 pci_set_drvdata(pdev, adapter);
888
889 if (pdev->device == PCI_DEVICE_ID_AVM_A1_V2)
890 adapter->type = AVM_FRITZ_PCIV2;
891 else
892 adapter->type = AVM_FRITZ_PCI;
893
894 retval = pci_enable_device(pdev);
895 if (retval)
896 goto err_free;
897
898 adapter->io = pci_resource_start(pdev, 1);
899 adapter->irq = pdev->irq;
900
901 printk(KERN_INFO "hisax_fcpcipnp: found adapter %s at %s\n",
902 (char *) ent->driver_data, pci_name(pdev));
903
904 retval = fcpcipnp_setup(adapter);
905 if (retval)
906 goto err_free;
907
908 return 0;
909
910 err_free:
911 delete_adapter(adapter);
912 err:
913 return retval;
914 }
915
916 #ifdef CONFIG_PNP
fcpnp_probe(struct pnp_dev * pdev,const struct pnp_device_id * dev_id)917 static int fcpnp_probe(struct pnp_dev *pdev, const struct pnp_device_id *dev_id)
918 {
919 struct fritz_adapter *adapter;
920 int retval;
921
922 if (!pdev)
923 return (-ENODEV);
924
925 retval = -ENOMEM;
926 adapter = new_adapter();
927 if (!adapter)
928 goto err;
929
930 pnp_set_drvdata(pdev, adapter);
931
932 adapter->type = AVM_FRITZ_PNP;
933
934 pnp_disable_dev(pdev);
935 retval = pnp_activate_dev(pdev);
936 if (retval < 0) {
937 printk(KERN_WARNING "%s: pnp_activate_dev(%s) ret(%d)\n", __func__,
938 (char *)dev_id->driver_data, retval);
939 goto err_free;
940 }
941 adapter->io = pnp_port_start(pdev, 0);
942 adapter->irq = pnp_irq(pdev, 0);
943 if (!adapter->io || adapter->irq == -1)
944 goto err_free;
945
946 printk(KERN_INFO "hisax_fcpcipnp: found adapter %s at IO %#x irq %d\n",
947 (char *) dev_id->driver_data, adapter->io, adapter->irq);
948
949 retval = fcpcipnp_setup(adapter);
950 if (retval)
951 goto err_free;
952
953 return 0;
954
955 err_free:
956 delete_adapter(adapter);
957 err:
958 return retval;
959 }
960
fcpnp_remove(struct pnp_dev * pdev)961 static void fcpnp_remove(struct pnp_dev *pdev)
962 {
963 struct fritz_adapter *adapter = pnp_get_drvdata(pdev);
964
965 if (adapter) {
966 fcpcipnp_release(adapter);
967 delete_adapter(adapter);
968 }
969 pnp_disable_dev(pdev);
970 }
971
972 static struct pnp_driver fcpnp_driver = {
973 .name = "fcpnp",
974 .probe = fcpnp_probe,
975 .remove = fcpnp_remove,
976 .id_table = fcpnp_ids,
977 };
978 #endif
979
fcpci_remove(struct pci_dev * pdev)980 static void fcpci_remove(struct pci_dev *pdev)
981 {
982 struct fritz_adapter *adapter = pci_get_drvdata(pdev);
983
984 fcpcipnp_release(adapter);
985 pci_disable_device(pdev);
986 delete_adapter(adapter);
987 }
988
989 static struct pci_driver fcpci_driver = {
990 .name = "fcpci",
991 .probe = fcpci_probe,
992 .remove = fcpci_remove,
993 .id_table = fcpci_ids,
994 };
995
hisax_fcpcipnp_init(void)996 static int __init hisax_fcpcipnp_init(void)
997 {
998 int retval;
999
1000 printk(KERN_INFO "hisax_fcpcipnp: Fritz!Card PCI/PCIv2/PnP ISDN driver v0.0.1\n");
1001
1002 retval = pci_register_driver(&fcpci_driver);
1003 if (retval)
1004 return retval;
1005 #ifdef CONFIG_PNP
1006 retval = pnp_register_driver(&fcpnp_driver);
1007 if (retval < 0) {
1008 pci_unregister_driver(&fcpci_driver);
1009 return retval;
1010 }
1011 #endif
1012 return 0;
1013 }
1014
hisax_fcpcipnp_exit(void)1015 static void __exit hisax_fcpcipnp_exit(void)
1016 {
1017 #ifdef CONFIG_PNP
1018 pnp_unregister_driver(&fcpnp_driver);
1019 #endif
1020 pci_unregister_driver(&fcpci_driver);
1021 }
1022
1023 module_init(hisax_fcpcipnp_init);
1024 module_exit(hisax_fcpcipnp_exit);
1025