1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24#include <linux/module.h>
25#include <linux/gfp.h>
26
27#include <linux/kernel.h>
28#include <linux/types.h>
29#include <linux/skbuff.h>
30#include <linux/netdevice.h>
31#include <linux/ioport.h>
32#include <linux/delay.h>
33#include <linux/init.h>
34#include <linux/interrupt.h>
35#include <linux/rtnetlink.h>
36#include <linux/serial_reg.h>
37#include <linux/dma-mapping.h>
38#include <linux/platform_device.h>
39
40#include <asm/io.h>
41#include <asm/dma.h>
42#include <asm/byteorder.h>
43
44#include <net/irda/wrapper.h>
45#include <net/irda/irda.h>
46#include <net/irda/irda_device.h>
47
48#include "ali-ircc.h"
49
50#define CHIP_IO_EXTENT 8
51#define BROKEN_DONGLE_ID
52
53#define ALI_IRCC_DRIVER_NAME "ali-ircc"
54
55
56static int ali_ircc_suspend(struct platform_device *dev, pm_message_t state);
57static int ali_ircc_resume(struct platform_device *dev);
58
59static struct platform_driver ali_ircc_driver = {
60 .suspend = ali_ircc_suspend,
61 .resume = ali_ircc_resume,
62 .driver = {
63 .name = ALI_IRCC_DRIVER_NAME,
64 .owner = THIS_MODULE,
65 },
66};
67
68
69static int qos_mtt_bits = 0x07;
70
71
72static unsigned int io[] = { ~0, ~0, ~0, ~0 };
73static unsigned int irq[] = { 0, 0, 0, 0 };
74static unsigned int dma[] = { 0, 0, 0, 0 };
75
76static int ali_ircc_probe_53(ali_chip_t *chip, chipio_t *info);
77static int ali_ircc_init_43(ali_chip_t *chip, chipio_t *info);
78static int ali_ircc_init_53(ali_chip_t *chip, chipio_t *info);
79
80
81
82
83static ali_chip_t chips[] =
84{
85 { "M1543", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x43, ali_ircc_probe_53, ali_ircc_init_43 },
86 { "M1535", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x53, ali_ircc_probe_53, ali_ircc_init_53 },
87 { "M1563", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x63, ali_ircc_probe_53, ali_ircc_init_53 },
88 { NULL }
89};
90
91
92static struct ali_ircc_cb *dev_self[] = { NULL, NULL, NULL, NULL };
93
94
95static char *dongle_types[] = {
96 "TFDS6000",
97 "HP HSDL-3600",
98 "HP HSDL-1100",
99 "No dongle connected",
100};
101
102
103static int ali_ircc_open(int i, chipio_t *info);
104
105static int ali_ircc_close(struct ali_ircc_cb *self);
106
107static int ali_ircc_setup(chipio_t *info);
108static int ali_ircc_is_receiving(struct ali_ircc_cb *self);
109static int ali_ircc_net_open(struct net_device *dev);
110static int ali_ircc_net_close(struct net_device *dev);
111static int ali_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
112static void ali_ircc_change_speed(struct ali_ircc_cb *self, __u32 baud);
113
114
115static netdev_tx_t ali_ircc_sir_hard_xmit(struct sk_buff *skb,
116 struct net_device *dev);
117static irqreturn_t ali_ircc_sir_interrupt(struct ali_ircc_cb *self);
118static void ali_ircc_sir_receive(struct ali_ircc_cb *self);
119static void ali_ircc_sir_write_wakeup(struct ali_ircc_cb *self);
120static int ali_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len);
121static void ali_ircc_sir_change_speed(struct ali_ircc_cb *priv, __u32 speed);
122
123
124static netdev_tx_t ali_ircc_fir_hard_xmit(struct sk_buff *skb,
125 struct net_device *dev);
126static void ali_ircc_fir_change_speed(struct ali_ircc_cb *priv, __u32 speed);
127static irqreturn_t ali_ircc_fir_interrupt(struct ali_ircc_cb *self);
128static int ali_ircc_dma_receive(struct ali_ircc_cb *self);
129static int ali_ircc_dma_receive_complete(struct ali_ircc_cb *self);
130static int ali_ircc_dma_xmit_complete(struct ali_ircc_cb *self);
131static void ali_ircc_dma_xmit(struct ali_ircc_cb *self);
132
133
134static int ali_ircc_read_dongle_id (int i, chipio_t *info);
135static void ali_ircc_change_dongle_speed(struct ali_ircc_cb *priv, int speed);
136
137
138static void SIR2FIR(int iobase);
139static void FIR2SIR(int iobase);
140static void SetCOMInterrupts(struct ali_ircc_cb *self , unsigned char enable);
141
142
143
144
145
146
147
148static int __init ali_ircc_init(void)
149{
150 ali_chip_t *chip;
151 chipio_t info;
152 int ret;
153 int cfg, cfg_base;
154 int reg, revision;
155 int i = 0;
156
157 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
158
159 ret = platform_driver_register(&ali_ircc_driver);
160 if (ret) {
161 IRDA_ERROR("%s, Can't register driver!\n",
162 ALI_IRCC_DRIVER_NAME);
163 return ret;
164 }
165
166 ret = -ENODEV;
167
168
169 for (chip= chips; chip->name; chip++, i++)
170 {
171 IRDA_DEBUG(2, "%s(), Probing for %s ...\n", __func__, chip->name);
172
173
174 for (cfg=0; cfg<2; cfg++)
175 {
176 cfg_base = chip->cfg[cfg];
177 if (!cfg_base)
178 continue;
179
180 memset(&info, 0, sizeof(chipio_t));
181 info.cfg_base = cfg_base;
182 info.fir_base = io[i];
183 info.dma = dma[i];
184 info.irq = irq[i];
185
186
187
188 outb(chip->entr1, cfg_base);
189 outb(chip->entr2, cfg_base);
190
191
192 outb(0x07, cfg_base);
193 outb(0x05, cfg_base+1);
194
195
196 outb(chip->cid_index, cfg_base);
197 reg = inb(cfg_base+1);
198
199 if (reg == chip->cid_value)
200 {
201 IRDA_DEBUG(2, "%s(), Chip found at 0x%03x\n", __func__, cfg_base);
202
203 outb(0x1F, cfg_base);
204 revision = inb(cfg_base+1);
205 IRDA_DEBUG(2, "%s(), Found %s chip, revision=%d\n", __func__,
206 chip->name, revision);
207
208
209
210
211
212
213 if (io[i] < 2000)
214 {
215 chip->init(chip, &info);
216 }
217 else
218 {
219 chip->probe(chip, &info);
220 }
221
222 if (ali_ircc_open(i, &info) == 0)
223 ret = 0;
224 i++;
225 }
226 else
227 {
228 IRDA_DEBUG(2, "%s(), No %s chip at 0x%03x\n", __func__, chip->name, cfg_base);
229 }
230
231 outb(0xbb, cfg_base);
232 }
233 }
234
235 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__);
236
237 if (ret)
238 platform_driver_unregister(&ali_ircc_driver);
239
240 return ret;
241}
242
243
244
245
246
247
248
249static void __exit ali_ircc_cleanup(void)
250{
251 int i;
252
253 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
254
255 for (i=0; i < ARRAY_SIZE(dev_self); i++) {
256 if (dev_self[i])
257 ali_ircc_close(dev_self[i]);
258 }
259
260 platform_driver_unregister(&ali_ircc_driver);
261
262 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__);
263}
264
265static const struct net_device_ops ali_ircc_sir_ops = {
266 .ndo_open = ali_ircc_net_open,
267 .ndo_stop = ali_ircc_net_close,
268 .ndo_start_xmit = ali_ircc_sir_hard_xmit,
269 .ndo_do_ioctl = ali_ircc_net_ioctl,
270};
271
272static const struct net_device_ops ali_ircc_fir_ops = {
273 .ndo_open = ali_ircc_net_open,
274 .ndo_stop = ali_ircc_net_close,
275 .ndo_start_xmit = ali_ircc_fir_hard_xmit,
276 .ndo_do_ioctl = ali_ircc_net_ioctl,
277};
278
279
280
281
282
283
284
285static int ali_ircc_open(int i, chipio_t *info)
286{
287 struct net_device *dev;
288 struct ali_ircc_cb *self;
289 int dongle_id;
290 int err;
291
292 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
293
294 if (i >= ARRAY_SIZE(dev_self)) {
295 IRDA_ERROR("%s(), maximum number of supported chips reached!\n",
296 __func__);
297 return -ENOMEM;
298 }
299
300
301 if ((ali_ircc_setup(info)) == -1)
302 return -1;
303
304 dev = alloc_irdadev(sizeof(*self));
305 if (dev == NULL) {
306 IRDA_ERROR("%s(), can't allocate memory for control block!\n",
307 __func__);
308 return -ENOMEM;
309 }
310
311 self = netdev_priv(dev);
312 self->netdev = dev;
313 spin_lock_init(&self->lock);
314
315
316 dev_self[i] = self;
317 self->index = i;
318
319
320 self->io.cfg_base = info->cfg_base;
321 self->io.fir_base = info->fir_base;
322 self->io.sir_base = info->sir_base;
323 self->io.irq = info->irq;
324 self->io.fir_ext = CHIP_IO_EXTENT;
325 self->io.dma = info->dma;
326 self->io.fifo_size = 16;
327
328
329 if (!request_region(self->io.fir_base, self->io.fir_ext,
330 ALI_IRCC_DRIVER_NAME)) {
331 IRDA_WARNING("%s(), can't get iobase of 0x%03x\n", __func__,
332 self->io.fir_base);
333 err = -ENODEV;
334 goto err_out1;
335 }
336
337
338 irda_init_max_qos_capabilies(&self->qos);
339
340
341 self->qos.baud_rate.bits = IR_9600|IR_19200|IR_38400|IR_57600|
342 IR_115200|IR_576000|IR_1152000|(IR_4000000 << 8);
343
344 self->qos.min_turn_time.bits = qos_mtt_bits;
345
346 irda_qos_bits_to_value(&self->qos);
347
348
349 self->rx_buff.truesize = 14384;
350 self->tx_buff.truesize = 14384;
351
352
353 self->rx_buff.head =
354 dma_zalloc_coherent(NULL, self->rx_buff.truesize,
355 &self->rx_buff_dma, GFP_KERNEL);
356 if (self->rx_buff.head == NULL) {
357 err = -ENOMEM;
358 goto err_out2;
359 }
360
361 self->tx_buff.head =
362 dma_zalloc_coherent(NULL, self->tx_buff.truesize,
363 &self->tx_buff_dma, GFP_KERNEL);
364 if (self->tx_buff.head == NULL) {
365 err = -ENOMEM;
366 goto err_out3;
367 }
368
369 self->rx_buff.in_frame = FALSE;
370 self->rx_buff.state = OUTSIDE_FRAME;
371 self->tx_buff.data = self->tx_buff.head;
372 self->rx_buff.data = self->rx_buff.head;
373
374
375 self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0;
376 self->tx_fifo.tail = self->tx_buff.head;
377
378
379 dev->netdev_ops = &ali_ircc_sir_ops;
380
381 err = register_netdev(dev);
382 if (err) {
383 IRDA_ERROR("%s(), register_netdev() failed!\n", __func__);
384 goto err_out4;
385 }
386 IRDA_MESSAGE("IrDA: Registered device %s\n", dev->name);
387
388
389 dongle_id = ali_ircc_read_dongle_id(i, info);
390 IRDA_MESSAGE("%s(), %s, Found dongle: %s\n", __func__,
391 ALI_IRCC_DRIVER_NAME, dongle_types[dongle_id]);
392
393 self->io.dongle_id = dongle_id;
394
395 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__);
396
397 return 0;
398
399 err_out4:
400 dma_free_coherent(NULL, self->tx_buff.truesize,
401 self->tx_buff.head, self->tx_buff_dma);
402 err_out3:
403 dma_free_coherent(NULL, self->rx_buff.truesize,
404 self->rx_buff.head, self->rx_buff_dma);
405 err_out2:
406 release_region(self->io.fir_base, self->io.fir_ext);
407 err_out1:
408 dev_self[i] = NULL;
409 free_netdev(dev);
410 return err;
411}
412
413
414
415
416
417
418
419
420static int __exit ali_ircc_close(struct ali_ircc_cb *self)
421{
422 int iobase;
423
424 IRDA_DEBUG(4, "%s(), ---------------- Start ----------------\n", __func__);
425
426 IRDA_ASSERT(self != NULL, return -1;);
427
428 iobase = self->io.fir_base;
429
430
431 unregister_netdev(self->netdev);
432
433
434 IRDA_DEBUG(4, "%s(), Releasing Region %03x\n", __func__, self->io.fir_base);
435 release_region(self->io.fir_base, self->io.fir_ext);
436
437 if (self->tx_buff.head)
438 dma_free_coherent(NULL, self->tx_buff.truesize,
439 self->tx_buff.head, self->tx_buff_dma);
440
441 if (self->rx_buff.head)
442 dma_free_coherent(NULL, self->rx_buff.truesize,
443 self->rx_buff.head, self->rx_buff_dma);
444
445 dev_self[self->index] = NULL;
446 free_netdev(self->netdev);
447
448 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__);
449
450 return 0;
451}
452
453
454
455
456
457
458static int ali_ircc_init_43(ali_chip_t *chip, chipio_t *info)
459{
460
461
462
463
464 return 0;
465}
466
467
468
469
470
471
472static int ali_ircc_init_53(ali_chip_t *chip, chipio_t *info)
473{
474
475
476
477
478 return 0;
479}
480
481
482
483
484
485
486static int ali_ircc_probe_53(ali_chip_t *chip, chipio_t *info)
487{
488 int cfg_base = info->cfg_base;
489 int hi, low, reg;
490
491 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
492
493
494 outb(chip->entr1, cfg_base);
495 outb(chip->entr2, cfg_base);
496
497
498 outb(0x07, cfg_base);
499 outb(0x05, cfg_base+1);
500
501
502 outb(0x60, cfg_base);
503 hi = inb(cfg_base+1);
504 outb(0x61, cfg_base);
505 low = inb(cfg_base+1);
506 info->fir_base = (hi<<8) + low;
507
508 info->sir_base = info->fir_base;
509
510 IRDA_DEBUG(2, "%s(), probing fir_base=0x%03x\n", __func__, info->fir_base);
511
512
513 outb(0x70, cfg_base);
514 reg = inb(cfg_base+1);
515 info->irq = reg & 0x0f;
516 IRDA_DEBUG(2, "%s(), probing irq=%d\n", __func__, info->irq);
517
518
519 outb(0x74, cfg_base);
520 reg = inb(cfg_base+1);
521 info->dma = reg & 0x07;
522
523 if(info->dma == 0x04)
524 IRDA_WARNING("%s(), No DMA channel assigned !\n", __func__);
525 else
526 IRDA_DEBUG(2, "%s(), probing dma=%d\n", __func__, info->dma);
527
528
529 outb(0x30, cfg_base);
530 reg = inb(cfg_base+1);
531 info->enabled = (reg & 0x80) && (reg & 0x01);
532 IRDA_DEBUG(2, "%s(), probing enabled=%d\n", __func__, info->enabled);
533
534
535 outb(0x22, cfg_base);
536 reg = inb(cfg_base+1);
537 info->suspended = (reg & 0x20);
538 IRDA_DEBUG(2, "%s(), probing suspended=%d\n", __func__, info->suspended);
539
540
541 outb(0xbb, cfg_base);
542
543 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__);
544
545 return 0;
546}
547
548
549
550
551
552
553
554
555static int ali_ircc_setup(chipio_t *info)
556{
557 unsigned char tmp;
558 int version;
559 int iobase = info->fir_base;
560
561 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
562
563
564
565
566
567
568
569 SIR2FIR(iobase);
570
571
572 outb(0x40, iobase+FIR_MCR);
573
574
575 switch_bank(iobase, BANK3);
576 version = inb(iobase+FIR_ID_VR);
577
578
579 if(version != 0x00)
580 {
581 IRDA_ERROR("%s, Wrong chip version %02x\n",
582 ALI_IRCC_DRIVER_NAME, version);
583 return -1;
584 }
585
586
587 switch_bank(iobase, BANK1);
588 outb(RX_FIFO_Threshold, iobase+FIR_FIFO_TR);
589
590
591 outb(RX_DMA_Threshold, iobase+FIR_DMA_TR);
592
593
594 switch_bank(iobase, BANK2);
595 outb(inb(iobase+FIR_IRDA_CR) | IRDA_CR_CRC, iobase+FIR_IRDA_CR);
596
597
598
599
600 switch_bank(iobase, BANK0);
601
602 tmp = inb(iobase+FIR_LCR_B);
603 tmp &=~0x20;
604 tmp |= 0x80;
605 tmp &= 0xbf;
606 outb(tmp, iobase+FIR_LCR_B);
607
608
609 outb(0x00, iobase+FIR_IER);
610
611
612
613 FIR2SIR(iobase);
614
615 IRDA_MESSAGE("%s, driver loaded (Benjamin Kong)\n",
616 ALI_IRCC_DRIVER_NAME);
617
618
619
620
621
622 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__);
623
624 return 0;
625}
626
627
628
629
630
631
632
633
634static int ali_ircc_read_dongle_id (int i, chipio_t *info)
635{
636 int dongle_id, reg;
637 int cfg_base = info->cfg_base;
638
639 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
640
641
642 outb(chips[i].entr1, cfg_base);
643 outb(chips[i].entr2, cfg_base);
644
645
646 outb(0x07, cfg_base);
647 outb(0x05, cfg_base+1);
648
649
650 outb(0xf0, cfg_base);
651 reg = inb(cfg_base+1);
652 dongle_id = ((reg>>6)&0x02) | ((reg>>5)&0x01);
653 IRDA_DEBUG(2, "%s(), probing dongle_id=%d, dongle_types=%s\n", __func__,
654 dongle_id, dongle_types[dongle_id]);
655
656
657 outb(0xbb, cfg_base);
658
659 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__);
660
661 return dongle_id;
662}
663
664
665
666
667
668
669
670static irqreturn_t ali_ircc_interrupt(int irq, void *dev_id)
671{
672 struct net_device *dev = dev_id;
673 struct ali_ircc_cb *self;
674 int ret;
675
676 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
677
678 self = netdev_priv(dev);
679
680 spin_lock(&self->lock);
681
682
683 if (self->io.speed > 115200)
684 ret = ali_ircc_fir_interrupt(self);
685 else
686 ret = ali_ircc_sir_interrupt(self);
687
688 spin_unlock(&self->lock);
689
690 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__);
691 return ret;
692}
693
694
695
696
697
698
699static irqreturn_t ali_ircc_fir_interrupt(struct ali_ircc_cb *self)
700{
701 __u8 eir, OldMessageCount;
702 int iobase, tmp;
703
704 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__);
705
706 iobase = self->io.fir_base;
707
708 switch_bank(iobase, BANK0);
709 self->InterruptID = inb(iobase+FIR_IIR);
710 self->BusStatus = inb(iobase+FIR_BSR);
711
712 OldMessageCount = (self->LineStatus + 1) & 0x07;
713 self->LineStatus = inb(iobase+FIR_LSR);
714
715 eir = self->InterruptID & self->ier;
716
717 IRDA_DEBUG(1, "%s(), self->InterruptID = %x\n", __func__,self->InterruptID);
718 IRDA_DEBUG(1, "%s(), self->LineStatus = %x\n", __func__,self->LineStatus);
719 IRDA_DEBUG(1, "%s(), self->ier = %x\n", __func__,self->ier);
720 IRDA_DEBUG(1, "%s(), eir = %x\n", __func__,eir);
721
722
723 SetCOMInterrupts(self, FALSE);
724
725
726
727 if (eir & IIR_EOM)
728 {
729 if (self->io.direction == IO_XMIT)
730 {
731 IRDA_DEBUG(1, "%s(), ******* IIR_EOM (Tx) *******\n", __func__);
732
733 if(ali_ircc_dma_xmit_complete(self))
734 {
735 if (irda_device_txqueue_empty(self->netdev))
736 {
737
738 ali_ircc_dma_receive(self);
739 self->ier = IER_EOM;
740 }
741 }
742 else
743 {
744 self->ier = IER_EOM;
745 }
746
747 }
748 else
749 {
750 IRDA_DEBUG(1, "%s(), ******* IIR_EOM (Rx) *******\n", __func__);
751
752 if(OldMessageCount > ((self->LineStatus+1) & 0x07))
753 {
754 self->rcvFramesOverflow = TRUE;
755 IRDA_DEBUG(1, "%s(), ******* self->rcvFramesOverflow = TRUE ********\n", __func__);
756 }
757
758 if (ali_ircc_dma_receive_complete(self))
759 {
760 IRDA_DEBUG(1, "%s(), ******* receive complete ********\n", __func__);
761
762 self->ier = IER_EOM;
763 }
764 else
765 {
766 IRDA_DEBUG(1, "%s(), ******* Not receive complete ********\n", __func__);
767
768 self->ier = IER_EOM | IER_TIMER;
769 }
770
771 }
772 }
773
774 else if (eir & IIR_TIMER)
775 {
776 if(OldMessageCount > ((self->LineStatus+1) & 0x07))
777 {
778 self->rcvFramesOverflow = TRUE;
779 IRDA_DEBUG(1, "%s(), ******* self->rcvFramesOverflow = TRUE *******\n", __func__);
780 }
781
782 switch_bank(iobase, BANK1);
783 tmp = inb(iobase+FIR_CR);
784 outb( tmp& ~CR_TIMER_EN, iobase+FIR_CR);
785
786
787 if (self->io.direction == IO_XMIT)
788 {
789 ali_ircc_dma_xmit(self);
790
791
792 self->ier = IER_EOM;
793
794 }
795 else
796 {
797 if(ali_ircc_dma_receive_complete(self))
798 {
799 self->ier = IER_EOM;
800 }
801 else
802 {
803 self->ier = IER_EOM | IER_TIMER;
804 }
805 }
806 }
807
808
809 SetCOMInterrupts(self, TRUE);
810
811 IRDA_DEBUG(1, "%s(), ----------------- End ---------------\n", __func__);
812 return IRQ_RETVAL(eir);
813}
814
815
816
817
818
819
820
821static irqreturn_t ali_ircc_sir_interrupt(struct ali_ircc_cb *self)
822{
823 int iobase;
824 int iir, lsr;
825
826 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
827
828 iobase = self->io.sir_base;
829
830 iir = inb(iobase+UART_IIR) & UART_IIR_ID;
831 if (iir) {
832
833 lsr = inb(iobase+UART_LSR);
834
835 IRDA_DEBUG(4, "%s(), iir=%02x, lsr=%02x, iobase=%#x\n", __func__,
836 iir, lsr, iobase);
837
838 switch (iir)
839 {
840 case UART_IIR_RLSI:
841 IRDA_DEBUG(2, "%s(), RLSI\n", __func__);
842 break;
843 case UART_IIR_RDI:
844
845 ali_ircc_sir_receive(self);
846 break;
847 case UART_IIR_THRI:
848 if (lsr & UART_LSR_THRE)
849 {
850
851 ali_ircc_sir_write_wakeup(self);
852 }
853 break;
854 default:
855 IRDA_DEBUG(0, "%s(), unhandled IIR=%#x\n", __func__, iir);
856 break;
857 }
858
859 }
860
861
862 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__);
863
864 return IRQ_RETVAL(iir);
865}
866
867
868
869
870
871
872
873
874static void ali_ircc_sir_receive(struct ali_ircc_cb *self)
875{
876 int boguscount = 0;
877 int iobase;
878
879 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
880 IRDA_ASSERT(self != NULL, return;);
881
882 iobase = self->io.sir_base;
883
884
885
886
887
888 do {
889 async_unwrap_char(self->netdev, &self->netdev->stats, &self->rx_buff,
890 inb(iobase+UART_RX));
891
892
893 if (boguscount++ > 32) {
894 IRDA_DEBUG(2,"%s(), breaking!\n", __func__);
895 break;
896 }
897 } while (inb(iobase+UART_LSR) & UART_LSR_DR);
898
899 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
900}
901
902
903
904
905
906
907
908
909static void ali_ircc_sir_write_wakeup(struct ali_ircc_cb *self)
910{
911 int actual = 0;
912 int iobase;
913
914 IRDA_ASSERT(self != NULL, return;);
915
916 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ );
917
918 iobase = self->io.sir_base;
919
920
921 if (self->tx_buff.len > 0)
922 {
923
924 actual = ali_ircc_sir_write(iobase, self->io.fifo_size,
925 self->tx_buff.data, self->tx_buff.len);
926 self->tx_buff.data += actual;
927 self->tx_buff.len -= actual;
928 }
929 else
930 {
931 if (self->new_speed)
932 {
933
934 while(!(inb(iobase+UART_LSR) & UART_LSR_TEMT))
935 IRDA_DEBUG(1, "%s(), UART_LSR_THRE\n", __func__ );
936
937 IRDA_DEBUG(1, "%s(), Changing speed! self->new_speed = %d\n", __func__ , self->new_speed);
938 ali_ircc_change_speed(self, self->new_speed);
939 self->new_speed = 0;
940
941
942 if (self->io.speed > 115200)
943 {
944 IRDA_DEBUG(2, "%s(), ali_ircc_change_speed from UART_LSR_TEMT\n", __func__ );
945
946 self->ier = IER_EOM;
947
948 return;
949 }
950 }
951 else
952 {
953 netif_wake_queue(self->netdev);
954 }
955
956 self->netdev->stats.tx_packets++;
957
958
959 outb(UART_IER_RDI, iobase+UART_IER);
960 }
961
962 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
963}
964
965static void ali_ircc_change_speed(struct ali_ircc_cb *self, __u32 baud)
966{
967 struct net_device *dev = self->netdev;
968 int iobase;
969
970 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ );
971
972 IRDA_DEBUG(2, "%s(), setting speed = %d\n", __func__ , baud);
973
974
975
976
977 iobase = self->io.fir_base;
978
979 SetCOMInterrupts(self, FALSE);
980
981
982 if (baud > 115200)
983 {
984
985
986 ali_ircc_fir_change_speed(self, baud);
987
988
989 dev->netdev_ops = &ali_ircc_fir_ops;
990
991
992 self->ier = IER_EOM;
993
994
995 ali_ircc_dma_receive(self);
996 }
997
998 else
999 {
1000 ali_ircc_sir_change_speed(self, baud);
1001
1002
1003 dev->netdev_ops = &ali_ircc_sir_ops;
1004 }
1005
1006
1007 SetCOMInterrupts(self, TRUE);
1008
1009 netif_wake_queue(self->netdev);
1010
1011 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
1012}
1013
1014static void ali_ircc_fir_change_speed(struct ali_ircc_cb *priv, __u32 baud)
1015{
1016
1017 int iobase;
1018 struct ali_ircc_cb *self = priv;
1019 struct net_device *dev;
1020
1021 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ );
1022
1023 IRDA_ASSERT(self != NULL, return;);
1024
1025 dev = self->netdev;
1026 iobase = self->io.fir_base;
1027
1028 IRDA_DEBUG(1, "%s(), self->io.speed = %d, change to speed = %d\n", __func__ ,self->io.speed,baud);
1029
1030
1031 if(self->io.speed <=115200)
1032 {
1033 SIR2FIR(iobase);
1034 }
1035
1036
1037 self->io.speed = baud;
1038
1039
1040 ali_ircc_change_dongle_speed(self, baud);
1041
1042 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
1043}
1044
1045
1046
1047
1048
1049
1050
1051static void ali_ircc_sir_change_speed(struct ali_ircc_cb *priv, __u32 speed)
1052{
1053 struct ali_ircc_cb *self = priv;
1054 unsigned long flags;
1055 int iobase;
1056 int fcr;
1057 int lcr;
1058 int divisor;
1059
1060 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ );
1061
1062 IRDA_DEBUG(1, "%s(), Setting speed to: %d\n", __func__ , speed);
1063
1064 IRDA_ASSERT(self != NULL, return;);
1065
1066 iobase = self->io.sir_base;
1067
1068
1069 if(self->io.speed >115200)
1070 {
1071
1072 ali_ircc_change_dongle_speed(self, speed);
1073
1074 FIR2SIR(iobase);
1075 }
1076
1077
1078
1079 inb(iobase+UART_LSR);
1080 inb(iobase+UART_SCR);
1081
1082
1083 self->io.speed = speed;
1084
1085 spin_lock_irqsave(&self->lock, flags);
1086
1087 divisor = 115200/speed;
1088
1089 fcr = UART_FCR_ENABLE_FIFO;
1090
1091
1092
1093
1094
1095
1096 if (self->io.speed < 38400)
1097 fcr |= UART_FCR_TRIGGER_1;
1098 else
1099 fcr |= UART_FCR_TRIGGER_14;
1100
1101
1102 lcr = UART_LCR_WLEN8;
1103
1104 outb(UART_LCR_DLAB | lcr, iobase+UART_LCR);
1105 outb(divisor & 0xff, iobase+UART_DLL);
1106 outb(divisor >> 8, iobase+UART_DLM);
1107 outb(lcr, iobase+UART_LCR);
1108 outb(fcr, iobase+UART_FCR);
1109
1110
1111
1112 outb((UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2), iobase+UART_MCR);
1113
1114 spin_unlock_irqrestore(&self->lock, flags);
1115
1116 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
1117}
1118
1119static void ali_ircc_change_dongle_speed(struct ali_ircc_cb *priv, int speed)
1120{
1121
1122 struct ali_ircc_cb *self = priv;
1123 int iobase,dongle_id;
1124 int tmp = 0;
1125
1126 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ );
1127
1128 iobase = self->io.fir_base;
1129 dongle_id = self->io.dongle_id;
1130
1131
1132
1133 IRDA_DEBUG(1, "%s(), Set Speed for %s , Speed = %d\n", __func__ , dongle_types[dongle_id], speed);
1134
1135 switch_bank(iobase, BANK2);
1136 tmp = inb(iobase+FIR_IRDA_CR);
1137
1138
1139 if(dongle_id == 0)
1140 {
1141 if(speed == 4000000)
1142 {
1143
1144
1145
1146
1147
1148
1149 tmp &= ~IRDA_CR_HDLC;
1150 tmp |= IRDA_CR_CRC;
1151
1152 switch_bank(iobase, BANK2);
1153 outb(tmp, iobase+FIR_IRDA_CR);
1154
1155
1156 tmp &= ~0x09;
1157 tmp |= 0x02;
1158 outb(tmp, iobase+FIR_IRDA_CR);
1159 udelay(2);
1160
1161
1162 tmp &= ~0x01;
1163 tmp |= 0x0a;
1164 outb(tmp, iobase+FIR_IRDA_CR);
1165 udelay(2);
1166
1167
1168 tmp |= 0x0b;
1169 outb(tmp, iobase+FIR_IRDA_CR);
1170 udelay(2);
1171
1172
1173 tmp &= ~0x08;
1174 tmp |= 0x03;
1175 outb(tmp, iobase+FIR_IRDA_CR);
1176 udelay(2);
1177
1178
1179 tmp &= ~0x09;
1180 tmp |= 0x02;
1181 outb(tmp, iobase+FIR_IRDA_CR);
1182 udelay(2);
1183
1184
1185 outb(tmp & ~0x02, iobase+FIR_IRDA_CR);
1186 }
1187 else
1188 {
1189
1190
1191
1192
1193
1194
1195
1196 if (speed==1152000)
1197 {
1198 tmp |= 0xA0;
1199 }
1200 else
1201 {
1202 tmp &=~0x80;
1203 tmp |= 0x20;
1204 }
1205
1206 tmp |= IRDA_CR_CRC;
1207
1208 switch_bank(iobase, BANK2);
1209 outb(tmp, iobase+FIR_IRDA_CR);
1210
1211
1212
1213
1214
1215 tmp &= ~0x09;
1216 tmp |= 0x02;
1217 outb(tmp, iobase+FIR_IRDA_CR);
1218 udelay(2);
1219
1220
1221 tmp &= ~0x01;
1222 tmp |= 0x0a;
1223 outb(tmp, iobase+FIR_IRDA_CR);
1224
1225
1226 tmp &= ~0x09;
1227 tmp |= 0x02;
1228 outb(tmp, iobase+FIR_IRDA_CR);
1229 udelay(2);
1230
1231
1232 outb(tmp & ~0x02, iobase+FIR_IRDA_CR);
1233 }
1234 }
1235 else if (dongle_id == 1)
1236 {
1237 switch(speed)
1238 {
1239 case 4000000:
1240 tmp &= ~IRDA_CR_HDLC;
1241 break;
1242
1243 case 1152000:
1244 tmp |= 0xA0;
1245 break;
1246
1247 case 576000:
1248 tmp &=~0x80;
1249 tmp |= 0x20;
1250 break;
1251 }
1252
1253 tmp |= IRDA_CR_CRC;
1254
1255 switch_bank(iobase, BANK2);
1256 outb(tmp, iobase+FIR_IRDA_CR);
1257 }
1258 else
1259 {
1260 if(speed <= 115200)
1261 {
1262
1263 tmp &= ~IRDA_CR_FIR_SIN;
1264
1265 switch_bank(iobase, BANK2);
1266 outb(tmp, iobase+FIR_IRDA_CR);
1267 }
1268 else
1269 {
1270
1271 switch(speed)
1272 {
1273 case 4000000:
1274 tmp &= ~IRDA_CR_HDLC;
1275 break;
1276
1277 case 1152000:
1278 tmp |= 0xA0;
1279 break;
1280
1281 case 576000:
1282 tmp &=~0x80;
1283 tmp |= 0x20;
1284 break;
1285 }
1286
1287 tmp |= IRDA_CR_CRC;
1288 tmp |= IRDA_CR_FIR_SIN;
1289
1290 switch_bank(iobase, BANK2);
1291 outb(tmp, iobase+FIR_IRDA_CR);
1292 }
1293 }
1294
1295 switch_bank(iobase, BANK0);
1296
1297 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
1298}
1299
1300
1301
1302
1303
1304
1305
1306static int ali_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len)
1307{
1308 int actual = 0;
1309
1310 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ );
1311
1312
1313 if (!(inb(iobase+UART_LSR) & UART_LSR_THRE)) {
1314 IRDA_DEBUG(0, "%s(), failed, fifo not empty!\n", __func__ );
1315 return 0;
1316 }
1317
1318
1319 while ((fifo_size-- > 0) && (actual < len)) {
1320
1321 outb(buf[actual], iobase+UART_TX);
1322
1323 actual++;
1324 }
1325
1326 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
1327 return actual;
1328}
1329
1330
1331
1332
1333
1334
1335
1336static int ali_ircc_net_open(struct net_device *dev)
1337{
1338 struct ali_ircc_cb *self;
1339 int iobase;
1340 char hwname[32];
1341
1342 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ );
1343
1344 IRDA_ASSERT(dev != NULL, return -1;);
1345
1346 self = netdev_priv(dev);
1347
1348 IRDA_ASSERT(self != NULL, return 0;);
1349
1350 iobase = self->io.fir_base;
1351
1352
1353 if (request_irq(self->io.irq, ali_ircc_interrupt, 0, dev->name, dev))
1354 {
1355 IRDA_WARNING("%s, unable to allocate irq=%d\n",
1356 ALI_IRCC_DRIVER_NAME,
1357 self->io.irq);
1358 return -EAGAIN;
1359 }
1360
1361
1362
1363
1364
1365 if (request_dma(self->io.dma, dev->name)) {
1366 IRDA_WARNING("%s, unable to allocate dma=%d\n",
1367 ALI_IRCC_DRIVER_NAME,
1368 self->io.dma);
1369 free_irq(self->io.irq, dev);
1370 return -EAGAIN;
1371 }
1372
1373
1374 outb(UART_IER_RDI , iobase+UART_IER);
1375
1376
1377 netif_start_queue(dev);
1378
1379
1380 sprintf(hwname, "ALI-FIR @ 0x%03x", self->io.fir_base);
1381
1382
1383
1384
1385
1386 self->irlap = irlap_open(dev, &self->qos, hwname);
1387
1388 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
1389
1390 return 0;
1391}
1392
1393
1394
1395
1396
1397
1398
1399static int ali_ircc_net_close(struct net_device *dev)
1400{
1401
1402 struct ali_ircc_cb *self;
1403
1404
1405 IRDA_DEBUG(4, "%s(), ---------------- Start ----------------\n", __func__ );
1406
1407 IRDA_ASSERT(dev != NULL, return -1;);
1408
1409 self = netdev_priv(dev);
1410 IRDA_ASSERT(self != NULL, return 0;);
1411
1412
1413 netif_stop_queue(dev);
1414
1415
1416 if (self->irlap)
1417 irlap_close(self->irlap);
1418 self->irlap = NULL;
1419
1420 disable_dma(self->io.dma);
1421
1422
1423 SetCOMInterrupts(self, FALSE);
1424
1425 free_irq(self->io.irq, dev);
1426 free_dma(self->io.dma);
1427
1428 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
1429
1430 return 0;
1431}
1432
1433
1434
1435
1436
1437
1438
1439static netdev_tx_t ali_ircc_fir_hard_xmit(struct sk_buff *skb,
1440 struct net_device *dev)
1441{
1442 struct ali_ircc_cb *self;
1443 unsigned long flags;
1444 int iobase;
1445 __u32 speed;
1446 int mtt, diff;
1447
1448 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ );
1449
1450 self = netdev_priv(dev);
1451 iobase = self->io.fir_base;
1452
1453 netif_stop_queue(dev);
1454
1455
1456 spin_lock_irqsave(&self->lock, flags);
1457
1458
1459
1460
1461
1462
1463 speed = irda_get_next_speed(skb);
1464 if ((speed != self->io.speed) && (speed != -1)) {
1465
1466 if (!skb->len) {
1467 ali_ircc_change_speed(self, speed);
1468 dev->trans_start = jiffies;
1469 spin_unlock_irqrestore(&self->lock, flags);
1470 dev_kfree_skb(skb);
1471 return NETDEV_TX_OK;
1472 } else
1473 self->new_speed = speed;
1474 }
1475
1476
1477 self->tx_fifo.queue[self->tx_fifo.free].start = self->tx_fifo.tail;
1478 self->tx_fifo.queue[self->tx_fifo.free].len = skb->len;
1479 self->tx_fifo.tail += skb->len;
1480
1481 dev->stats.tx_bytes += skb->len;
1482
1483 skb_copy_from_linear_data(skb, self->tx_fifo.queue[self->tx_fifo.free].start,
1484 skb->len);
1485 self->tx_fifo.len++;
1486 self->tx_fifo.free++;
1487
1488
1489 if (self->tx_fifo.len == 1)
1490 {
1491
1492 mtt = irda_get_mtt(skb);
1493
1494 if (mtt)
1495 {
1496
1497 do_gettimeofday(&self->now);
1498
1499 diff = self->now.tv_usec - self->stamp.tv_usec;
1500
1501
1502 IRDA_DEBUG(1, "%s(), ******* diff = %d *******\n", __func__ , diff);
1503
1504 if (diff < 0)
1505 diff += 1000000;
1506
1507
1508
1509
1510 if (mtt > diff)
1511 {
1512 mtt -= diff;
1513
1514
1515
1516
1517
1518
1519 if (mtt > 500)
1520 {
1521
1522 mtt = (mtt+250) / 500;
1523
1524 IRDA_DEBUG(1, "%s(), ************** mtt = %d ***********\n", __func__ , mtt);
1525
1526
1527 if (mtt == 1)
1528 {
1529 switch_bank(iobase, BANK1);
1530 outb(TIMER_IIR_500, iobase+FIR_TIMER_IIR);
1531 }
1532 else if (mtt == 2)
1533 {
1534 switch_bank(iobase, BANK1);
1535 outb(TIMER_IIR_1ms, iobase+FIR_TIMER_IIR);
1536 }
1537 else
1538 {
1539 switch_bank(iobase, BANK1);
1540 outb(TIMER_IIR_2ms, iobase+FIR_TIMER_IIR);
1541 }
1542
1543
1544
1545 outb(inb(iobase+FIR_CR) | CR_TIMER_EN, iobase+FIR_CR);
1546 self->io.direction = IO_XMIT;
1547
1548
1549 self->ier = IER_TIMER;
1550 SetCOMInterrupts(self, TRUE);
1551
1552
1553 goto out;
1554 }
1555 else
1556 udelay(mtt);
1557 }
1558 }
1559
1560
1561 self->ier = IER_EOM;
1562 SetCOMInterrupts(self, TRUE);
1563
1564
1565 ali_ircc_dma_xmit(self);
1566 }
1567
1568 out:
1569
1570
1571 if (self->tx_fifo.free < MAX_TX_WINDOW)
1572 netif_wake_queue(self->netdev);
1573
1574
1575 switch_bank(iobase, BANK0);
1576
1577 dev->trans_start = jiffies;
1578 spin_unlock_irqrestore(&self->lock, flags);
1579 dev_kfree_skb(skb);
1580
1581 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
1582 return NETDEV_TX_OK;
1583}
1584
1585
1586static void ali_ircc_dma_xmit(struct ali_ircc_cb *self)
1587{
1588 int iobase, tmp;
1589 unsigned char FIFO_OPTI, Hi, Lo;
1590
1591
1592 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ );
1593
1594 iobase = self->io.fir_base;
1595
1596
1597
1598 if(self->tx_fifo.queue[self->tx_fifo.ptr].len < TX_FIFO_Threshold)
1599 FIFO_OPTI = self->tx_fifo.queue[self->tx_fifo.ptr].len-1;
1600 else
1601 FIFO_OPTI = TX_FIFO_Threshold;
1602
1603
1604 switch_bank(iobase, BANK1);
1605 outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR);
1606
1607 self->io.direction = IO_XMIT;
1608
1609 irda_setup_dma(self->io.dma,
1610 ((u8 *)self->tx_fifo.queue[self->tx_fifo.ptr].start -
1611 self->tx_buff.head) + self->tx_buff_dma,
1612 self->tx_fifo.queue[self->tx_fifo.ptr].len,
1613 DMA_TX_MODE);
1614
1615
1616 switch_bank(iobase, BANK0);
1617 outb(LCR_A_FIFO_RESET, iobase+FIR_LCR_A);
1618
1619
1620 if (self->fifo_opti_buf!=FIFO_OPTI)
1621 {
1622 switch_bank(iobase, BANK1);
1623 outb(FIFO_OPTI, iobase+FIR_FIFO_TR) ;
1624 self->fifo_opti_buf=FIFO_OPTI;
1625 }
1626
1627
1628 switch_bank(iobase, BANK1);
1629 outb(TX_DMA_Threshold, iobase+FIR_DMA_TR);
1630
1631
1632 Hi = (self->tx_fifo.queue[self->tx_fifo.ptr].len >> 8) & 0x0f;
1633 Lo = self->tx_fifo.queue[self->tx_fifo.ptr].len & 0xff;
1634 switch_bank(iobase, BANK2);
1635 outb(Hi, iobase+FIR_TX_DSR_HI);
1636 outb(Lo, iobase+FIR_TX_DSR_LO);
1637
1638
1639 switch_bank(iobase, BANK0);
1640 tmp = inb(iobase+FIR_LCR_B);
1641 tmp &= ~0x20;
1642 outb(((unsigned char)(tmp & 0x3f) | LCR_B_TX_MODE) & ~LCR_B_BW, iobase+FIR_LCR_B);
1643 IRDA_DEBUG(1, "%s(), *** Change to TX mode: FIR_LCR_B = 0x%x ***\n", __func__ , inb(iobase+FIR_LCR_B));
1644
1645 outb(0, iobase+FIR_LSR);
1646
1647
1648 switch_bank(iobase, BANK1);
1649 outb(inb(iobase+FIR_CR) | CR_DMA_EN | CR_DMA_BURST, iobase+FIR_CR);
1650
1651 switch_bank(iobase, BANK0);
1652
1653 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
1654}
1655
1656static int ali_ircc_dma_xmit_complete(struct ali_ircc_cb *self)
1657{
1658 int iobase;
1659 int ret = TRUE;
1660
1661 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ );
1662
1663 iobase = self->io.fir_base;
1664
1665
1666 switch_bank(iobase, BANK1);
1667 outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR);
1668
1669
1670 switch_bank(iobase, BANK0);
1671 if((inb(iobase+FIR_LSR) & LSR_FRAME_ABORT) == LSR_FRAME_ABORT)
1672
1673 {
1674 IRDA_ERROR("%s(), ********* LSR_FRAME_ABORT *********\n", __func__);
1675 self->netdev->stats.tx_errors++;
1676 self->netdev->stats.tx_fifo_errors++;
1677 }
1678 else
1679 {
1680 self->netdev->stats.tx_packets++;
1681 }
1682
1683
1684 if (self->new_speed)
1685 {
1686 ali_ircc_change_speed(self, self->new_speed);
1687 self->new_speed = 0;
1688 }
1689
1690
1691 self->tx_fifo.ptr++;
1692 self->tx_fifo.len--;
1693
1694
1695 if (self->tx_fifo.len)
1696 {
1697 ali_ircc_dma_xmit(self);
1698
1699
1700 ret = FALSE;
1701 }
1702 else
1703 {
1704 self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0;
1705 self->tx_fifo.tail = self->tx_buff.head;
1706 }
1707
1708
1709 if (self->tx_fifo.free < MAX_TX_WINDOW) {
1710
1711
1712 netif_wake_queue(self->netdev);
1713 }
1714
1715 switch_bank(iobase, BANK0);
1716
1717 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
1718 return ret;
1719}
1720
1721
1722
1723
1724
1725
1726
1727
1728static int ali_ircc_dma_receive(struct ali_ircc_cb *self)
1729{
1730 int iobase, tmp;
1731
1732 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ );
1733
1734 iobase = self->io.fir_base;
1735
1736
1737 self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0;
1738 self->tx_fifo.tail = self->tx_buff.head;
1739
1740
1741 switch_bank(iobase, BANK1);
1742 outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR);
1743
1744
1745 switch_bank(iobase, BANK0);
1746 outb(0x07, iobase+FIR_LSR);
1747
1748 self->rcvFramesOverflow = FALSE;
1749
1750 self->LineStatus = inb(iobase+FIR_LSR) ;
1751
1752
1753 self->io.direction = IO_RECV;
1754 self->rx_buff.data = self->rx_buff.head;
1755
1756
1757
1758 outb(LCR_A_FIFO_RESET, iobase+FIR_LCR_A);
1759
1760 self->st_fifo.len = self->st_fifo.pending_bytes = 0;
1761 self->st_fifo.tail = self->st_fifo.head = 0;
1762
1763 irda_setup_dma(self->io.dma, self->rx_buff_dma, self->rx_buff.truesize,
1764 DMA_RX_MODE);
1765
1766
1767
1768 tmp = inb(iobase+FIR_LCR_B);
1769 outb((unsigned char)(tmp &0x3f) | LCR_B_RX_MODE | LCR_B_BW , iobase + FIR_LCR_B);
1770 IRDA_DEBUG(1, "%s(), *** Change To RX mode: FIR_LCR_B = 0x%x ***\n", __func__ , inb(iobase+FIR_LCR_B));
1771
1772
1773 switch_bank(iobase, BANK1);
1774 outb(RX_FIFO_Threshold, iobase+FIR_FIFO_TR);
1775 outb(RX_DMA_Threshold, iobase+FIR_DMA_TR);
1776
1777
1778
1779 outb(CR_DMA_EN | CR_DMA_BURST, iobase+FIR_CR);
1780
1781 switch_bank(iobase, BANK0);
1782 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
1783 return 0;
1784}
1785
1786static int ali_ircc_dma_receive_complete(struct ali_ircc_cb *self)
1787{
1788 struct st_fifo *st_fifo;
1789 struct sk_buff *skb;
1790 __u8 status, MessageCount;
1791 int len, i, iobase, val;
1792
1793 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ );
1794
1795 st_fifo = &self->st_fifo;
1796 iobase = self->io.fir_base;
1797
1798 switch_bank(iobase, BANK0);
1799 MessageCount = inb(iobase+ FIR_LSR)&0x07;
1800
1801 if (MessageCount > 0)
1802 IRDA_DEBUG(0, "%s(), Message count = %d,\n", __func__ , MessageCount);
1803
1804 for (i=0; i<=MessageCount; i++)
1805 {
1806
1807 switch_bank(iobase, BANK0);
1808 status = inb(iobase+FIR_LSR);
1809
1810 switch_bank(iobase, BANK2);
1811 len = inb(iobase+FIR_RX_DSR_HI) & 0x0f;
1812 len = len << 8;
1813 len |= inb(iobase+FIR_RX_DSR_LO);
1814
1815 IRDA_DEBUG(1, "%s(), RX Length = 0x%.2x,\n", __func__ , len);
1816 IRDA_DEBUG(1, "%s(), RX Status = 0x%.2x,\n", __func__ , status);
1817
1818 if (st_fifo->tail >= MAX_RX_WINDOW) {
1819 IRDA_DEBUG(0, "%s(), window is full!\n", __func__ );
1820 continue;
1821 }
1822
1823 st_fifo->entries[st_fifo->tail].status = status;
1824 st_fifo->entries[st_fifo->tail].len = len;
1825 st_fifo->pending_bytes += len;
1826 st_fifo->tail++;
1827 st_fifo->len++;
1828 }
1829
1830 for (i=0; i<=MessageCount; i++)
1831 {
1832
1833 status = st_fifo->entries[st_fifo->head].status;
1834 len = st_fifo->entries[st_fifo->head].len;
1835 st_fifo->pending_bytes -= len;
1836 st_fifo->head++;
1837 st_fifo->len--;
1838
1839
1840 if ((status & 0xd8) || self->rcvFramesOverflow || (len==0))
1841 {
1842 IRDA_DEBUG(0,"%s(), ************* RX Errors ************\n", __func__ );
1843
1844
1845 self->netdev->stats.rx_errors++;
1846
1847 self->rx_buff.data += len;
1848
1849 if (status & LSR_FIFO_UR)
1850 {
1851 self->netdev->stats.rx_frame_errors++;
1852 IRDA_DEBUG(0,"%s(), ************* FIFO Errors ************\n", __func__ );
1853 }
1854 if (status & LSR_FRAME_ERROR)
1855 {
1856 self->netdev->stats.rx_frame_errors++;
1857 IRDA_DEBUG(0,"%s(), ************* FRAME Errors ************\n", __func__ );
1858 }
1859
1860 if (status & LSR_CRC_ERROR)
1861 {
1862 self->netdev->stats.rx_crc_errors++;
1863 IRDA_DEBUG(0,"%s(), ************* CRC Errors ************\n", __func__ );
1864 }
1865
1866 if(self->rcvFramesOverflow)
1867 {
1868 self->netdev->stats.rx_frame_errors++;
1869 IRDA_DEBUG(0,"%s(), ************* Overran DMA buffer ************\n", __func__ );
1870 }
1871 if(len == 0)
1872 {
1873 self->netdev->stats.rx_frame_errors++;
1874 IRDA_DEBUG(0,"%s(), ********** Receive Frame Size = 0 *********\n", __func__ );
1875 }
1876 }
1877 else
1878 {
1879
1880 if (st_fifo->pending_bytes < 32)
1881 {
1882 switch_bank(iobase, BANK0);
1883 val = inb(iobase+FIR_BSR);
1884 if ((val& BSR_FIFO_NOT_EMPTY)== 0x80)
1885 {
1886 IRDA_DEBUG(0, "%s(), ************* BSR_FIFO_NOT_EMPTY ************\n", __func__ );
1887
1888
1889 st_fifo->head--;
1890 st_fifo->len++;
1891 st_fifo->pending_bytes += len;
1892 st_fifo->entries[st_fifo->head].status = status;
1893 st_fifo->entries[st_fifo->head].len = len;
1894
1895
1896
1897
1898
1899
1900
1901 switch_bank(iobase, BANK1);
1902 outb(TIMER_IIR_500, iobase+FIR_TIMER_IIR);
1903
1904
1905 outb(inb(iobase+FIR_CR) | CR_TIMER_EN, iobase+FIR_CR);
1906
1907 return FALSE;
1908 }
1909 }
1910
1911
1912
1913
1914
1915
1916 do_gettimeofday(&self->stamp);
1917
1918 skb = dev_alloc_skb(len+1);
1919 if (skb == NULL)
1920 {
1921 IRDA_WARNING("%s(), memory squeeze, "
1922 "dropping frame.\n",
1923 __func__);
1924 self->netdev->stats.rx_dropped++;
1925
1926 return FALSE;
1927 }
1928
1929
1930 skb_reserve(skb, 1);
1931
1932
1933 skb_put(skb, len);
1934 skb_copy_to_linear_data(skb, self->rx_buff.data, len);
1935
1936
1937 self->rx_buff.data += len;
1938 self->netdev->stats.rx_bytes += len;
1939 self->netdev->stats.rx_packets++;
1940
1941 skb->dev = self->netdev;
1942 skb_reset_mac_header(skb);
1943 skb->protocol = htons(ETH_P_IRDA);
1944 netif_rx(skb);
1945 }
1946 }
1947
1948 switch_bank(iobase, BANK0);
1949
1950 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
1951 return TRUE;
1952}
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962static netdev_tx_t ali_ircc_sir_hard_xmit(struct sk_buff *skb,
1963 struct net_device *dev)
1964{
1965 struct ali_ircc_cb *self;
1966 unsigned long flags;
1967 int iobase;
1968 __u32 speed;
1969
1970 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ );
1971
1972 IRDA_ASSERT(dev != NULL, return NETDEV_TX_OK;);
1973
1974 self = netdev_priv(dev);
1975 IRDA_ASSERT(self != NULL, return NETDEV_TX_OK;);
1976
1977 iobase = self->io.sir_base;
1978
1979 netif_stop_queue(dev);
1980
1981
1982 spin_lock_irqsave(&self->lock, flags);
1983
1984
1985
1986
1987
1988
1989 speed = irda_get_next_speed(skb);
1990 if ((speed != self->io.speed) && (speed != -1)) {
1991
1992 if (!skb->len) {
1993 ali_ircc_change_speed(self, speed);
1994 dev->trans_start = jiffies;
1995 spin_unlock_irqrestore(&self->lock, flags);
1996 dev_kfree_skb(skb);
1997 return NETDEV_TX_OK;
1998 } else
1999 self->new_speed = speed;
2000 }
2001
2002
2003 self->tx_buff.data = self->tx_buff.head;
2004
2005
2006 self->tx_buff.len = async_wrap_skb(skb, self->tx_buff.data,
2007 self->tx_buff.truesize);
2008
2009 self->netdev->stats.tx_bytes += self->tx_buff.len;
2010
2011
2012 outb(UART_IER_THRI, iobase+UART_IER);
2013
2014 dev->trans_start = jiffies;
2015 spin_unlock_irqrestore(&self->lock, flags);
2016
2017 dev_kfree_skb(skb);
2018
2019 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
2020
2021 return NETDEV_TX_OK;
2022}
2023
2024
2025
2026
2027
2028
2029
2030
2031static int ali_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2032{
2033 struct if_irda_req *irq = (struct if_irda_req *) rq;
2034 struct ali_ircc_cb *self;
2035 unsigned long flags;
2036 int ret = 0;
2037
2038 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ );
2039
2040 IRDA_ASSERT(dev != NULL, return -1;);
2041
2042 self = netdev_priv(dev);
2043
2044 IRDA_ASSERT(self != NULL, return -1;);
2045
2046 IRDA_DEBUG(2, "%s(), %s, (cmd=0x%X)\n", __func__ , dev->name, cmd);
2047
2048 switch (cmd) {
2049 case SIOCSBANDWIDTH:
2050 IRDA_DEBUG(1, "%s(), SIOCSBANDWIDTH\n", __func__ );
2051
2052
2053
2054
2055
2056 if (!in_interrupt() && !capable(CAP_NET_ADMIN))
2057 return -EPERM;
2058
2059 spin_lock_irqsave(&self->lock, flags);
2060 ali_ircc_change_speed(self, irq->ifr_baudrate);
2061 spin_unlock_irqrestore(&self->lock, flags);
2062 break;
2063 case SIOCSMEDIABUSY:
2064 IRDA_DEBUG(1, "%s(), SIOCSMEDIABUSY\n", __func__ );
2065 if (!capable(CAP_NET_ADMIN))
2066 return -EPERM;
2067 irda_device_set_media_busy(self->netdev, TRUE);
2068 break;
2069 case SIOCGRECEIVING:
2070 IRDA_DEBUG(2, "%s(), SIOCGRECEIVING\n", __func__ );
2071
2072 irq->ifr_receiving = ali_ircc_is_receiving(self);
2073 break;
2074 default:
2075 ret = -EOPNOTSUPP;
2076 }
2077
2078 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
2079
2080 return ret;
2081}
2082
2083
2084
2085
2086
2087
2088
2089static int ali_ircc_is_receiving(struct ali_ircc_cb *self)
2090{
2091 unsigned long flags;
2092 int status = FALSE;
2093 int iobase;
2094
2095 IRDA_DEBUG(2, "%s(), ---------------- Start -----------------\n", __func__ );
2096
2097 IRDA_ASSERT(self != NULL, return FALSE;);
2098
2099 spin_lock_irqsave(&self->lock, flags);
2100
2101 if (self->io.speed > 115200)
2102 {
2103 iobase = self->io.fir_base;
2104
2105 switch_bank(iobase, BANK1);
2106 if((inb(iobase+FIR_FIFO_FR) & 0x3f) != 0)
2107 {
2108
2109 IRDA_DEBUG(1, "%s(), We are receiving something\n", __func__ );
2110 status = TRUE;
2111 }
2112 switch_bank(iobase, BANK0);
2113 }
2114 else
2115 {
2116 status = (self->rx_buff.state != OUTSIDE_FRAME);
2117 }
2118
2119 spin_unlock_irqrestore(&self->lock, flags);
2120
2121 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
2122
2123 return status;
2124}
2125
2126static int ali_ircc_suspend(struct platform_device *dev, pm_message_t state)
2127{
2128 struct ali_ircc_cb *self = platform_get_drvdata(dev);
2129
2130 IRDA_MESSAGE("%s, Suspending\n", ALI_IRCC_DRIVER_NAME);
2131
2132 if (self->io.suspended)
2133 return 0;
2134
2135 ali_ircc_net_close(self->netdev);
2136
2137 self->io.suspended = 1;
2138
2139 return 0;
2140}
2141
2142static int ali_ircc_resume(struct platform_device *dev)
2143{
2144 struct ali_ircc_cb *self = platform_get_drvdata(dev);
2145
2146 if (!self->io.suspended)
2147 return 0;
2148
2149 ali_ircc_net_open(self->netdev);
2150
2151 IRDA_MESSAGE("%s, Waking up\n", ALI_IRCC_DRIVER_NAME);
2152
2153 self->io.suspended = 0;
2154
2155 return 0;
2156}
2157
2158
2159
2160static void SetCOMInterrupts(struct ali_ircc_cb *self , unsigned char enable)
2161{
2162
2163 unsigned char newMask;
2164
2165 int iobase = self->io.fir_base;
2166
2167 IRDA_DEBUG(2, "%s(), -------- Start -------- ( Enable = %d )\n", __func__ , enable);
2168
2169
2170 if (enable){
2171 if (self->io.direction == IO_XMIT)
2172 {
2173 if (self->io.speed > 115200)
2174 {
2175 newMask = self->ier;
2176 }
2177 else
2178 {
2179 newMask = UART_IER_THRI | UART_IER_RDI;
2180 }
2181 }
2182 else {
2183 if (self->io.speed > 115200)
2184 {
2185 newMask = self->ier;
2186 }
2187 else
2188 {
2189 newMask = UART_IER_RDI;
2190 }
2191 }
2192 }
2193 else
2194 {
2195 newMask = 0x00;
2196
2197 }
2198
2199
2200 if (self->io.speed > 115200)
2201 {
2202 switch_bank(iobase, BANK0);
2203 outb(newMask, iobase+FIR_IER);
2204 }
2205 else
2206 outb(newMask, iobase+UART_IER);
2207
2208 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
2209}
2210
2211static void SIR2FIR(int iobase)
2212{
2213
2214
2215 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ );
2216
2217
2218
2219
2220 outb(0x28, iobase+UART_MCR);
2221 outb(0x68, iobase+UART_MCR);
2222 outb(0x88, iobase+UART_MCR);
2223
2224 outb(0x60, iobase+FIR_MCR);
2225 outb(0x20, iobase+FIR_MCR);
2226
2227
2228
2229
2230
2231 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
2232}
2233
2234static void FIR2SIR(int iobase)
2235{
2236 unsigned char val;
2237
2238 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ );
2239
2240
2241
2242
2243 outb(0x20, iobase+FIR_MCR);
2244 outb(0x00, iobase+UART_IER);
2245
2246 outb(0xA0, iobase+FIR_MCR);
2247 outb(0x00, iobase+UART_FCR);
2248 outb(0x07, iobase+UART_FCR);
2249
2250 val = inb(iobase+UART_RX);
2251 val = inb(iobase+UART_LSR);
2252 val = inb(iobase+UART_MSR);
2253
2254 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
2255}
2256
2257MODULE_AUTHOR("Benjamin Kong <benjamin_kong@ali.com.tw>");
2258MODULE_DESCRIPTION("ALi FIR Controller Driver");
2259MODULE_LICENSE("GPL");
2260MODULE_ALIAS("platform:" ALI_IRCC_DRIVER_NAME);
2261
2262
2263module_param_array(io, int, NULL, 0);
2264MODULE_PARM_DESC(io, "Base I/O addresses");
2265module_param_array(irq, int, NULL, 0);
2266MODULE_PARM_DESC(irq, "IRQ lines");
2267module_param_array(dma, int, NULL, 0);
2268MODULE_PARM_DESC(dma, "DMA channels");
2269
2270module_init(ali_ircc_init);
2271module_exit(ali_ircc_cleanup);
2272
