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x86/xen: resume timer irqs early
[linux/fpc-iii.git] / drivers / staging / sbe-2t3e3 / intr.c
blobefdeb751004798f7c5887c0999f73e5ab8a6553d
1 /*
2 * SBE 2T3E3 synchronous serial card driver for Linux
3 *
4 * Copyright (C) 2009-2010 Krzysztof Halasa <khc@pm.waw.pl>
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of version 2 of the GNU General Public License
8 * as published by the Free Software Foundation.
9 *
10 * This code is based on a driver written by SBE Inc.
11 */
12
13 #include <linux/hdlc.h>
14 #include <linux/interrupt.h>
15 #include <linux/netdevice.h>
16 #include "2t3e3.h"
17
18 irqreturn_t t3e3_intr(int irq, void *dev_instance)
19 {
20 struct channel *sc = dev_to_priv(dev_instance);
21 u32 val;
22 irqreturn_t ret = IRQ_NONE;
23
24 sc->interrupt_active = 1;
25
26 val = cpld_read(sc, SBE_2T3E3_CPLD_REG_PICSR);
27
28 if (val & SBE_2T3E3_CPLD_VAL_RECEIVE_LOSS_OF_SIGNAL_CHANGE) {
29 dev_dbg(&sc->pdev->dev,
30 "Rx LOS Chng Int r=%02x (LOS|OOF=%02x)\n",
31 val, (sc->s.LOS << 4) | sc->s.OOF);
32 cpld_LOS_update(sc);
33 ret = IRQ_HANDLED;
34 }
35
36 if (val & SBE_2T3E3_CPLD_VAL_INTERRUPT_FROM_ETHERNET_ASSERTED) {
37 dc_intr(sc);
38 ret = IRQ_HANDLED;
39 }
40
41 if (val & SBE_2T3E3_CPLD_VAL_INTERRUPT_FROM_FRAMER_ASSERTED) {
42 exar7250_intr(sc);
43 ret = IRQ_HANDLED;
44 }
45
46 /*
47 we don't care about other interrupt sources (DMO, LOS, LCV) because
48 they are handled by Framer too
49 */
50
51 sc->interrupt_active = 0;
52 return ret;
53 }
54
55 void dc_intr(struct channel *sc)
56 {
57 u32 val;
58
59 /* disable ethernet interrupts */
60 /* grrr this clears interrupt summary bits !!! */
61 dc_write(sc->addr, SBE_2T3E3_21143_REG_INTERRUPT_ENABLE, 0);
62
63 while ((val = dc_read(sc->addr, SBE_2T3E3_21143_REG_STATUS)) &
64 (SBE_2T3E3_21143_VAL_RECEIVE_PROCESS_STOPPED |
65 SBE_2T3E3_21143_VAL_RECEIVE_BUFFER_UNAVAILABLE |
66 SBE_2T3E3_21143_VAL_RECEIVE_INTERRUPT |
67 SBE_2T3E3_21143_VAL_TRANSMIT_UNDERFLOW |
68 SBE_2T3E3_21143_VAL_TRANSMIT_BUFFER_UNAVAILABLE |
69 SBE_2T3E3_21143_VAL_TRANSMIT_PROCESS_STOPPED |
70 SBE_2T3E3_21143_VAL_TRANSMIT_INTERRUPT)) {
71 dc_write(sc->addr, SBE_2T3E3_21143_REG_STATUS, val);
72
73 dev_dbg(&sc->pdev->dev, "SBE 2T3E3: Ethernet controller interrupt! (CSR5 = %08X)\n",
74 val);
75
76 if (val & (SBE_2T3E3_21143_VAL_RECEIVE_INTERRUPT |
77 SBE_2T3E3_21143_VAL_RECEIVE_BUFFER_UNAVAILABLE |
78 SBE_2T3E3_21143_VAL_RECEIVE_PROCESS_STOPPED)) {
79 if (val & SBE_2T3E3_21143_VAL_RECEIVE_INTERRUPT)
80 dev_dbg(&sc->pdev->dev,
81 "Receive interrupt (LOS=%d, OOF=%d)\n",
82 sc->s.LOS, sc->s.OOF);
83 if (val & SBE_2T3E3_21143_VAL_RECEIVE_BUFFER_UNAVAILABLE)
84 dev_dbg(&sc->pdev->dev,
85 "Receive buffer unavailable\n");
86 if (val & SBE_2T3E3_21143_VAL_RECEIVE_PROCESS_STOPPED)
87 dev_dbg(&sc->pdev->dev,
88 "Receive process stopped\n");
89 dc_intr_rx(sc);
90 }
91
92 if (val & SBE_2T3E3_21143_VAL_TRANSMIT_UNDERFLOW) {
93 dev_dbg(&sc->pdev->dev, "Transmit underflow\n");
94 dc_intr_tx_underflow(sc);
95 }
96
97 if (val & (SBE_2T3E3_21143_VAL_TRANSMIT_BUFFER_UNAVAILABLE |
98 SBE_2T3E3_21143_VAL_TRANSMIT_INTERRUPT |
99 SBE_2T3E3_21143_VAL_TRANSMIT_PROCESS_STOPPED)) {
100 if (val & SBE_2T3E3_21143_VAL_TRANSMIT_INTERRUPT)
101 dev_dbg(&sc->pdev->dev, "Transmit interrupt\n");
102 if (val & SBE_2T3E3_21143_VAL_TRANSMIT_BUFFER_UNAVAILABLE)
103 dev_dbg(&sc->pdev->dev,
104 "Transmit buffer unavailable\n");
105 if (val & SBE_2T3E3_21143_VAL_TRANSMIT_PROCESS_STOPPED)
106 dev_dbg(&sc->pdev->dev,
107 "Transmit process stopped\n");
108 dc_intr_tx(sc);
109 }
110 }
111
112 /* enable ethernet interrupts */
113 dc_write(sc->addr, SBE_2T3E3_21143_REG_INTERRUPT_ENABLE,
114 sc->ether.interrupt_enable_mask);
115 }
116
117 void dc_intr_rx(struct channel *sc)
118 {
119 u32 current_read;
120 u32 error_mask, error;
121 t3e3_rx_desc_t *current_desc;
122 struct sk_buff *m, *m2;
123 unsigned rcv_len;
124
125 sc->rcv_count++; /* for the activity LED */
126
127 current_read = sc->ether.rx_ring_current_read;
128 dev_dbg(&sc->pdev->dev, "intr_rx current_read = %d\n", current_read);
129
130 /* when ethernet loopback is set, ignore framer signals */
131 if ((sc->p.loopback != SBE_2T3E3_LOOPBACK_ETHERNET) && sc->s.OOF) {
132 while (!(sc->ether.rx_ring[current_read].rdes0 &
133 SBE_2T3E3_RX_DESC_21143_OWN)) {
134 current_desc = &sc->ether.rx_ring[current_read];
135 current_desc->rdes1 &= SBE_2T3E3_RX_DESC_END_OF_RING |
136 SBE_2T3E3_RX_DESC_SECOND_ADDRESS_CHAINED;
137 current_desc->rdes1 |= SBE_2T3E3_MTU;
138 current_desc->rdes0 = SBE_2T3E3_RX_DESC_21143_OWN;
139 current_read = (current_read + 1) % SBE_2T3E3_RX_DESC_RING_SIZE;
140 }
141 sc->ether.rx_ring_current_read = current_read;
142 return;
143 }
144
145 while (!(sc->ether.rx_ring[current_read].rdes0 &
146 SBE_2T3E3_RX_DESC_21143_OWN)) {
147 current_desc = &sc->ether.rx_ring[current_read];
148
149 dev_dbg(&sc->pdev->dev, "rdes0: %08X rdes1: %08X\n",
150 current_desc->rdes0, current_desc->rdes1);
151
152 m = sc->ether.rx_data[current_read];
153 rcv_len = (current_desc->rdes0 & SBE_2T3E3_RX_DESC_FRAME_LENGTH) >>
154 SBE_2T3E3_RX_DESC_FRAME_LENGTH_SHIFT;
155
156 dev_dbg(&sc->pdev->dev, "mbuf was received (mbuf len = %d)\n",
157 rcv_len);
158
159 switch (sc->p.crc) {
160 case SBE_2T3E3_CRC_16:
161 rcv_len -= SBE_2T3E3_CRC16_LENGTH;
162 break;
163 case SBE_2T3E3_CRC_32:
164 rcv_len -= SBE_2T3E3_CRC32_LENGTH;
165 break;
166 default:
167 break;
168 }
169
170 if (current_desc->rdes0 & SBE_2T3E3_RX_DESC_LAST_DESC) {
171
172 /* TODO: is collision possible? */
173 error_mask = SBE_2T3E3_RX_DESC_DESC_ERROR |
174 SBE_2T3E3_RX_DESC_COLLISION_SEEN |
175 SBE_2T3E3_RX_DESC_DRIBBLING_BIT;
176
177 switch (sc->p.frame_mode) {
178 case SBE_2T3E3_FRAME_MODE_HDLC:
179 error_mask |= SBE_2T3E3_RX_DESC_MII_ERROR;
180 if (sc->p.crc == SBE_2T3E3_CRC_32)
181 error_mask |= SBE_2T3E3_RX_DESC_CRC_ERROR;
182 break;
183 case SBE_2T3E3_FRAME_MODE_TRANSPARENT:
184 case SBE_2T3E3_FRAME_MODE_RAW:
185 break;
186 default:
187 error_mask = 0;
188 }
189
190 if (sc->s.LOS) {
191 error_mask &= ~(SBE_2T3E3_RX_DESC_DRIBBLING_BIT |
192 SBE_2T3E3_RX_DESC_MII_ERROR);
193 }
194
195 error = current_desc->rdes0 & error_mask;
196 if (error) {
197 sc->s.in_errors++;
198 dev_dbg(&sc->pdev->dev,
199 "error interrupt: NO_ERROR_MESSAGE = %d\n",
200 sc->r.flags & SBE_2T3E3_FLAG_NO_ERROR_MESSAGES ? 1 : 0);
201
202 current_desc->rdes1 &= SBE_2T3E3_RX_DESC_END_OF_RING |
203 SBE_2T3E3_RX_DESC_SECOND_ADDRESS_CHAINED;
204 current_desc->rdes1 |= SBE_2T3E3_MTU;
205 current_desc->rdes0 = SBE_2T3E3_RX_DESC_21143_OWN;
206
207 if (error & SBE_2T3E3_RX_DESC_DESC_ERROR) {
208 if (!(sc->r.flags & SBE_2T3E3_FLAG_NO_ERROR_MESSAGES))
209 dev_err(&sc->pdev->dev,
210 "SBE 2T3E3: descriptor error\n");
211 sc->s.in_error_desc++;
212 }
213
214 if (error & SBE_2T3E3_RX_DESC_COLLISION_SEEN) {
215 if (!(sc->r.flags & SBE_2T3E3_FLAG_NO_ERROR_MESSAGES))
216 dev_err(&sc->pdev->dev,
217 "SBE 2T3E3: collision seen\n");
218 sc->s.in_error_coll++;
219 } else {
220 if (error & SBE_2T3E3_RX_DESC_DRIBBLING_BIT) {
221 if (!(sc->r.flags & SBE_2T3E3_FLAG_NO_ERROR_MESSAGES))
222 dev_err(&sc->pdev->dev,
223 "SBE 2T3E3: dribbling bits error\n");
224 sc->s.in_error_drib++;
225 }
226
227 if (error & SBE_2T3E3_RX_DESC_CRC_ERROR) {
228 if (!(sc->r.flags & SBE_2T3E3_FLAG_NO_ERROR_MESSAGES))
229 dev_err(&sc->pdev->dev,
230 "SBE 2T3E3: crc error\n");
231 sc->s.in_error_crc++;
232 }
233 }
234
235 if (error & SBE_2T3E3_RX_DESC_MII_ERROR) {
236 if (!(sc->r.flags & SBE_2T3E3_FLAG_NO_ERROR_MESSAGES))
237 dev_err(&sc->pdev->dev, "SBE 2T3E3: mii error\n");
238 sc->s.in_error_mii++;
239 }
240
241 current_read = (current_read + 1) % SBE_2T3E3_RX_DESC_RING_SIZE;
242 sc->r.flags |= SBE_2T3E3_FLAG_NO_ERROR_MESSAGES;
243 continue;
244 }
245 }
246
247 current_desc->rdes1 &= SBE_2T3E3_RX_DESC_END_OF_RING |
248 SBE_2T3E3_RX_DESC_SECOND_ADDRESS_CHAINED;
249 current_desc->rdes1 |= SBE_2T3E3_MTU;
250
251 if (rcv_len > 1600) {
252 sc->s.in_errors++;
253 sc->s.in_dropped++;
254 if (!(sc->r.flags & SBE_2T3E3_FLAG_NO_ERROR_MESSAGES))
255 dev_err(&sc->pdev->dev, "SBE 2T3E3: oversized rx: rdes0 = %08X\n",
256 current_desc->rdes0);
257 } else {
258 m2 = dev_alloc_skb(MCLBYTES);
259 if (m2 != NULL) {
260 current_desc->rdes2 = virt_to_phys(m2->data);
261 sc->ether.rx_data[current_read] = m2;
262 sc->s.in_packets++;
263 sc->s.in_bytes += rcv_len;
264 m->dev = sc->dev;
265 skb_put(m, rcv_len);
266 skb_reset_mac_header(m);
267 m->protocol = hdlc_type_trans(m, m->dev);
268 netif_rx(m);
269
270 /* good packet was received so we will show error messages again... */
271 if (sc->r.flags & SBE_2T3E3_FLAG_NO_ERROR_MESSAGES) {
272 dev_dbg(&sc->pdev->dev,
273 "setting ERROR_MESSAGES->0\n");
274 sc->r.flags &= ~SBE_2T3E3_FLAG_NO_ERROR_MESSAGES;
275 }
276
277 } else {
278 sc->s.in_errors++;
279 sc->s.in_dropped++;
280 }
281 }
282 current_desc->rdes0 = SBE_2T3E3_RX_DESC_21143_OWN;
283 current_read = (current_read + 1) % SBE_2T3E3_RX_DESC_RING_SIZE;
284 }
285
286 sc->ether.rx_ring_current_read = current_read;
287
288 dc_write(sc->addr, SBE_2T3E3_21143_REG_RECEIVE_POLL_DEMAND, 0xFFFFFFFF);
289 }
290
291 void dc_intr_tx(struct channel *sc)
292 {
293 u32 current_read, current_write;
294 u32 last_segment, error;
295 t3e3_tx_desc_t *current_desc;
296
297 spin_lock(&sc->ether.tx_lock);
298
299 current_read = sc->ether.tx_ring_current_read;
300 current_write = sc->ether.tx_ring_current_write;
301
302 while (current_read != current_write) {
303 current_desc = &sc->ether.tx_ring[current_read];
304
305 if (current_desc->tdes0 & SBE_2T3E3_RX_DESC_21143_OWN)
306 break;
307
308 dev_dbg(&sc->pdev->dev,
309 "txeof: tdes0 = %08X tdes1 = %08X\n",
310 current_desc->tdes0, current_desc->tdes1);
311
312 error = current_desc->tdes0 & (SBE_2T3E3_TX_DESC_ERROR_SUMMARY |
313 SBE_2T3E3_TX_DESC_TRANSMIT_JABBER_TIMEOUT |
314 SBE_2T3E3_TX_DESC_LOSS_OF_CARRIER |
315 SBE_2T3E3_TX_DESC_NO_CARRIER |
316 SBE_2T3E3_TX_DESC_LINK_FAIL_REPORT |
317 SBE_2T3E3_TX_DESC_UNDERFLOW_ERROR |
318 SBE_2T3E3_TX_DESC_DEFFERED);
319
320 last_segment = current_desc->tdes1 & SBE_2T3E3_TX_DESC_LAST_SEGMENT;
321
322 current_desc->tdes0 = 0;
323 current_desc->tdes1 &= SBE_2T3E3_TX_DESC_END_OF_RING |
324 SBE_2T3E3_TX_DESC_SECOND_ADDRESS_CHAINED;
325 current_desc->tdes2 = 0;
326 sc->ether.tx_free_cnt++;
327
328 if (last_segment != SBE_2T3E3_TX_DESC_LAST_SEGMENT) {
329 current_read = (current_read + 1) % SBE_2T3E3_TX_DESC_RING_SIZE;
330 continue;
331 }
332
333
334 if (sc->ether.tx_data[current_read]) {
335 sc->s.out_packets++;
336 sc->s.out_bytes += sc->ether.tx_data[current_read]->len;
337 dev_kfree_skb_any(sc->ether.tx_data[current_read]);
338 sc->ether.tx_data[current_read] = NULL;
339 }
340
341 if (error > 0) {
342 sc->s.out_errors++;
343
344 if (error & SBE_2T3E3_TX_DESC_TRANSMIT_JABBER_TIMEOUT) {
345 dev_err(&sc->pdev->dev, "SBE 2T3E3: transmit jabber timeout\n");
346 sc->s.out_error_jab++;
347 }
348
349 if (sc->p.loopback != SBE_2T3E3_LOOPBACK_ETHERNET) {
350 if (error & SBE_2T3E3_TX_DESC_LOSS_OF_CARRIER) {
351 dev_err(&sc->pdev->dev, "SBE 2T3E3: loss of carrier\n");
352 sc->s.out_error_lost_carr++;
353 }
354
355 if (error & SBE_2T3E3_TX_DESC_NO_CARRIER) {
356 dev_err(&sc->pdev->dev, "SBE 2T3E3: no carrier\n");
357 sc->s.out_error_no_carr++;
358 }
359 }
360
361 if (error & SBE_2T3E3_TX_DESC_LINK_FAIL_REPORT) {
362 dev_err(&sc->pdev->dev, "SBE 2T3E3: link fail report\n");
363 sc->s.out_error_link_fail++;
364 }
365
366 if (error & SBE_2T3E3_TX_DESC_UNDERFLOW_ERROR) {
367 dev_err(&sc->pdev->dev, "SBE 2T3E3:"
368 " transmission underflow error\n");
369 sc->s.out_error_underflow++;
370 spin_unlock(&sc->ether.tx_lock);
371
372 dc_restart(sc);
373 return;
374 }
375
376 if (error & SBE_2T3E3_TX_DESC_DEFFERED) {
377 dev_err(&sc->pdev->dev, "SBE 2T3E3: transmission deferred\n");
378 sc->s.out_error_dereferred++;
379 }
380 }
381
382 current_read = (current_read + 1) % SBE_2T3E3_TX_DESC_RING_SIZE;
383 }
384
385 sc->ether.tx_ring_current_read = current_read;
386
387 /* Relieve flow control when the TX queue is drained at least half way */
388 if (sc->ether.tx_full &&
389 (sc->ether.tx_free_cnt >= (SBE_2T3E3_TX_DESC_RING_SIZE / 2))) {
390 sc->ether.tx_full = 0;
391 netif_wake_queue(sc->dev);
392 }
393 spin_unlock(&sc->ether.tx_lock);
394 }
395
396
397 void dc_intr_tx_underflow(struct channel *sc)
398 {
399 u32 val;
400
401 dc_transmitter_onoff(sc, SBE_2T3E3_OFF);
402
403 val = dc_read(sc->addr, SBE_2T3E3_21143_REG_OPERATION_MODE);
404 dc_clear_bits(sc->addr, SBE_2T3E3_21143_REG_OPERATION_MODE,
405 SBE_2T3E3_21143_VAL_THRESHOLD_CONTROL_BITS);
406
407 switch (val & SBE_2T3E3_21143_VAL_THRESHOLD_CONTROL_BITS) {
408 case SBE_2T3E3_21143_VAL_THRESHOLD_CONTROL_BITS_1:
409 dc_set_bits(sc->addr, SBE_2T3E3_21143_REG_OPERATION_MODE,
410 SBE_2T3E3_21143_VAL_THRESHOLD_CONTROL_BITS_2);
411 break;
412 case SBE_2T3E3_21143_VAL_THRESHOLD_CONTROL_BITS_2:
413 dc_set_bits(sc->addr, SBE_2T3E3_21143_REG_OPERATION_MODE,
414 SBE_2T3E3_21143_VAL_THRESHOLD_CONTROL_BITS_3);
415 break;
416 case SBE_2T3E3_21143_VAL_THRESHOLD_CONTROL_BITS_3:
417 dc_set_bits(sc->addr, SBE_2T3E3_21143_REG_OPERATION_MODE,
418 SBE_2T3E3_21143_VAL_THRESHOLD_CONTROL_BITS_4);
419 break;
420 case SBE_2T3E3_21143_VAL_THRESHOLD_CONTROL_BITS_4:
421 default:
422 dc_set_bits(sc->addr, SBE_2T3E3_21143_REG_OPERATION_MODE,
423 SBE_2T3E3_21143_VAL_STORE_AND_FORWARD);
424 break;
425 }
426
427 dc_transmitter_onoff(sc, SBE_2T3E3_ON);
428 }
429
430
431
432
433 void exar7250_intr(struct channel *sc)
434 {
435 u32 status, old_OOF;
436
437 old_OOF = sc->s.OOF;
438
439 status = exar7250_read(sc, SBE_2T3E3_FRAMER_REG_BLOCK_INTERRUPT_STATUS);
440 dev_dbg(&sc->pdev->dev, "SBE 2T3E3: Framer interrupt! (REG[0x05] = %02X)\n", status);
441
442 switch (sc->p.frame_type) {
443 case SBE_2T3E3_FRAME_TYPE_E3_G751:
444 case SBE_2T3E3_FRAME_TYPE_E3_G832:
445 exar7250_E3_intr(sc, status);
446 break;
447
448 case SBE_2T3E3_FRAME_TYPE_T3_CBIT:
449 case SBE_2T3E3_FRAME_TYPE_T3_M13:
450 exar7250_T3_intr(sc, status);
451 break;
452
453 default:
454 break;
455 }
456
457 if (sc->s.OOF != old_OOF) {
458 if (sc->s.OOF) {
459 if (sc->p.loopback == SBE_2T3E3_LOOPBACK_NONE) {
460 dev_dbg(&sc->pdev->dev, "SBE 2T3E3: Disabling eth interrupts\n");
461 /* turn off ethernet interrupts */
462 dc_stop_intr(sc);
463 }
464 } else if (sc->r.flags & SBE_2T3E3_FLAG_NETWORK_UP) {
465 dev_dbg(&sc->pdev->dev, "SBE 2T3E3: Enabling eth interrupts\n");
466 /* start interrupts */
467 sc->s.OOF = 1;
468 dc_intr_rx(sc);
469 sc->s.OOF = 0;
470 if (sc->p.receiver_on) {
471 dc_receiver_onoff(sc, SBE_2T3E3_OFF);
472 dc_receiver_onoff(sc, SBE_2T3E3_ON);
473 }
474 dc_start_intr(sc);
475 }
476 }
477 }
478
479
480 void exar7250_T3_intr(struct channel *sc, u32 block_status)
481 {
482 u32 status, result;
483
484 if (block_status & SBE_2T3E3_FRAMER_VAL_RX_INTERRUPT_STATUS) {
485 status = exar7250_read(sc, SBE_2T3E3_FRAMER_REG_T3_RX_INTERRUPT_STATUS);
486
487 if (status) {
488 dev_dbg(&sc->pdev->dev,
489 "Framer interrupt T3 RX (REG[0x13] = %02X)\n",
490 status);
491
492 result = exar7250_read(sc, SBE_2T3E3_FRAMER_REG_T3_RX_CONFIGURATION_STATUS);
493
494 cpld_LOS_update(sc);
495
496 if (status & SBE_2T3E3_FRAMER_VAL_T3_RX_OOF_INTERRUPT_STATUS) {
497 sc->s.OOF = result & SBE_2T3E3_FRAMER_VAL_T3_RX_OOF ? 1 : 0;
498 dev_dbg(&sc->pdev->dev,
499 "Framer interrupt T3: OOF (%d)\n",
500 sc->s.OOF);
501 }
502
503 exar7250_write(sc, SBE_2T3E3_FRAMER_REG_T3_RX_INTERRUPT_ENABLE,
504 SBE_2T3E3_FRAMER_VAL_T3_RX_LOS_INTERRUPT_ENABLE |
505 SBE_2T3E3_FRAMER_VAL_T3_RX_OOF_INTERRUPT_ENABLE);
506 }
507
508 status = exar7250_read(sc, SBE_2T3E3_FRAMER_REG_T3_RX_FEAC_INTERRUPT_ENABLE_STATUS);
509 if (status) {
510 dev_dbg(&sc->pdev->dev,
511 "Framer interrupt T3 RX (REG[0x17] = %02X)\n",
512 status);
513 }
514
515 status = exar7250_read(sc, SBE_2T3E3_FRAMER_REG_T3_RX_LAPD_CONTROL);
516 if (status)
517 dev_dbg(&sc->pdev->dev,
518 "Framer interrupt T3 RX (REG[0x18] = %02X)\n",
519 status);
520 }
521
522
523 if (block_status & SBE_2T3E3_FRAMER_VAL_TX_INTERRUPT_STATUS) {
524 status = exar7250_read(sc, SBE_2T3E3_FRAMER_REG_T3_TX_FEAC_CONFIGURATION_STATUS);
525 dev_dbg(&sc->pdev->dev, "SBE 2T3E3: Framer interrupt T3 TX (REG[0x31] = %02X)\n",
526 status);
527
528 status = exar7250_read(sc, SBE_2T3E3_FRAMER_REG_T3_TX_LAPD_STATUS);
529 dev_dbg(&sc->pdev->dev, "SBE 2T3E3: Framer interrupt T3 TX (REG[0x34] = %02X)\n",
530 status);
531 }
532 }
533
534
535 void exar7250_E3_intr(struct channel *sc, u32 block_status)
536 {
537 u32 status, result;
538
539 if (block_status & SBE_2T3E3_FRAMER_VAL_RX_INTERRUPT_STATUS) {
540 status = exar7250_read(sc, SBE_2T3E3_FRAMER_REG_E3_RX_INTERRUPT_STATUS_1);
541
542 if (status) {
543 dev_dbg(&sc->pdev->dev,
544 "Framer interrupt E3 RX (REG[0x14] = %02X)\n",
545 status);
546
547 result = exar7250_read(sc, SBE_2T3E3_FRAMER_REG_E3_RX_CONFIGURATION_STATUS_2);
548
549 cpld_LOS_update(sc);
550
551 if (status & SBE_2T3E3_FRAMER_VAL_E3_RX_OOF_INTERRUPT_STATUS) {
552 sc->s.OOF = result & SBE_2T3E3_FRAMER_VAL_E3_RX_OOF ? 1 : 0;
553 dev_dbg(&sc->pdev->dev,
554 "Framer interrupt E3: OOF (%d)\n",
555 sc->s.OOF);
556 }
557
558 exar7250_write(sc, SBE_2T3E3_FRAMER_REG_E3_RX_INTERRUPT_ENABLE_1,
559 SBE_2T3E3_FRAMER_VAL_E3_RX_OOF_INTERRUPT_ENABLE |
560 SBE_2T3E3_FRAMER_VAL_E3_RX_LOS_INTERRUPT_ENABLE
561 );
562 }
563
564 status = exar7250_read(sc, SBE_2T3E3_FRAMER_REG_E3_RX_INTERRUPT_STATUS_2);
565 if (status) {
566 dev_dbg(&sc->pdev->dev,
567 "Framer interrupt E3 RX (REG[0x15] = %02X)\n",
568 status);
569
570 }
571
572 }
573
574 if (block_status & SBE_2T3E3_FRAMER_VAL_TX_INTERRUPT_STATUS) {
575 status = exar7250_read(sc, SBE_2T3E3_FRAMER_REG_E3_TX_LAPD_STATUS);
576 dev_dbg(&sc->pdev->dev, "SBE 2T3E3: Framer interrupt E3 TX (REG[0x34] = %02X)\n",
577 status);
578 }
579 }
Linux with added FPC-III support