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net: use NETDEV_TX_OK instead of 0 in ndo_start_xmit() functions
[deliverable/linux.git] / drivers / net / irda / ali-ircc.c
1 /*********************************************************************
2 *
3 * Filename: ali-ircc.h
4 * Version: 0.5
5 * Description: Driver for the ALI M1535D and M1543C FIR Controller
6 * Status: Experimental.
7 * Author: Benjamin Kong <benjamin_kong@ali.com.tw>
8 * Created at: 2000/10/16 03:46PM
9 * Modified at: 2001/1/3 02:55PM
10 * Modified by: Benjamin Kong <benjamin_kong@ali.com.tw>
11 * Modified at: 2003/11/6 and support for ALi south-bridge chipsets M1563
12 * Modified by: Clear Zhang <clear_zhang@ali.com.tw>
13 *
14 * Copyright (c) 2000 Benjamin Kong <benjamin_kong@ali.com.tw>
15 * All Rights Reserved
16 *
17 * This program is free software; you can redistribute it and/or
18 * modify it under the terms of the GNU General Public License as
19 * published by the Free Software Foundation; either version 2 of
20 * the License, or (at your option) any later version.
21 *
22 ********************************************************************/
23
24 #include <linux/module.h>
25
26 #include <linux/kernel.h>
27 #include <linux/types.h>
28 #include <linux/skbuff.h>
29 #include <linux/netdevice.h>
30 #include <linux/ioport.h>
31 #include <linux/delay.h>
32 #include <linux/slab.h>
33 #include <linux/init.h>
34 #include <linux/rtnetlink.h>
35 #include <linux/serial_reg.h>
36 #include <linux/dma-mapping.h>
37 #include <linux/platform_device.h>
38
39 #include <asm/io.h>
40 #include <asm/dma.h>
41 #include <asm/byteorder.h>
42
43 #include <net/irda/wrapper.h>
44 #include <net/irda/irda.h>
45 #include <net/irda/irda_device.h>
46
47 #include "ali-ircc.h"
48
49 #define CHIP_IO_EXTENT 8
50 #define BROKEN_DONGLE_ID
51
52 #define ALI_IRCC_DRIVER_NAME "ali-ircc"
53
54 /* Power Management */
55 static int ali_ircc_suspend(struct platform_device *dev, pm_message_t state);
56 static int ali_ircc_resume(struct platform_device *dev);
57
58 static struct platform_driver ali_ircc_driver = {
59 .suspend = ali_ircc_suspend,
60 .resume = ali_ircc_resume,
61 .driver = {
62 .name = ALI_IRCC_DRIVER_NAME,
63 .owner = THIS_MODULE,
64 },
65 };
66
67 /* Module parameters */
68 static int qos_mtt_bits = 0x07; /* 1 ms or more */
69
70 /* Use BIOS settions by default, but user may supply module parameters */
71 static unsigned int io[] = { ~0, ~0, ~0, ~0 };
72 static unsigned int irq[] = { 0, 0, 0, 0 };
73 static unsigned int dma[] = { 0, 0, 0, 0 };
74
75 static int ali_ircc_probe_53(ali_chip_t *chip, chipio_t *info);
76 static int ali_ircc_init_43(ali_chip_t *chip, chipio_t *info);
77 static int ali_ircc_init_53(ali_chip_t *chip, chipio_t *info);
78
79 /* These are the currently known ALi sourth-bridge chipsets, the only one difference
80 * is that M1543C doesn't support HP HDSL-3600
81 */
82 static ali_chip_t chips[] =
83 {
84 { "M1543", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x43, ali_ircc_probe_53, ali_ircc_init_43 },
85 { "M1535", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x53, ali_ircc_probe_53, ali_ircc_init_53 },
86 { "M1563", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x63, ali_ircc_probe_53, ali_ircc_init_53 },
87 { NULL }
88 };
89
90 /* Max 4 instances for now */
91 static struct ali_ircc_cb *dev_self[] = { NULL, NULL, NULL, NULL };
92
93 /* Dongle Types */
94 static char *dongle_types[] = {
95 "TFDS6000",
96 "HP HSDL-3600",
97 "HP HSDL-1100",
98 "No dongle connected",
99 };
100
101 /* Some prototypes */
102 static int ali_ircc_open(int i, chipio_t *info);
103
104 static int ali_ircc_close(struct ali_ircc_cb *self);
105
106 static int ali_ircc_setup(chipio_t *info);
107 static int ali_ircc_is_receiving(struct ali_ircc_cb *self);
108 static int ali_ircc_net_open(struct net_device *dev);
109 static int ali_ircc_net_close(struct net_device *dev);
110 static int ali_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
111 static void ali_ircc_change_speed(struct ali_ircc_cb *self, __u32 baud);
112
113 /* SIR function */
114 static int ali_ircc_sir_hard_xmit(struct sk_buff *skb, struct net_device *dev);
115 static irqreturn_t ali_ircc_sir_interrupt(struct ali_ircc_cb *self);
116 static void ali_ircc_sir_receive(struct ali_ircc_cb *self);
117 static void ali_ircc_sir_write_wakeup(struct ali_ircc_cb *self);
118 static int ali_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len);
119 static void ali_ircc_sir_change_speed(struct ali_ircc_cb *priv, __u32 speed);
120
121 /* FIR function */
122 static int ali_ircc_fir_hard_xmit(struct sk_buff *skb, struct net_device *dev);
123 static void ali_ircc_fir_change_speed(struct ali_ircc_cb *priv, __u32 speed);
124 static irqreturn_t ali_ircc_fir_interrupt(struct ali_ircc_cb *self);
125 static int ali_ircc_dma_receive(struct ali_ircc_cb *self);
126 static int ali_ircc_dma_receive_complete(struct ali_ircc_cb *self);
127 static int ali_ircc_dma_xmit_complete(struct ali_ircc_cb *self);
128 static void ali_ircc_dma_xmit(struct ali_ircc_cb *self);
129
130 /* My Function */
131 static int ali_ircc_read_dongle_id (int i, chipio_t *info);
132 static void ali_ircc_change_dongle_speed(struct ali_ircc_cb *priv, int speed);
133
134 /* ALi chip function */
135 static void SIR2FIR(int iobase);
136 static void FIR2SIR(int iobase);
137 static void SetCOMInterrupts(struct ali_ircc_cb *self , unsigned char enable);
138
139 /*
140 * Function ali_ircc_init ()
141 *
142 * Initialize chip. Find out whay kinds of chips we are dealing with
143 * and their configuation registers address
144 */
145 static int __init ali_ircc_init(void)
146 {
147 ali_chip_t *chip;
148 chipio_t info;
149 int ret;
150 int cfg, cfg_base;
151 int reg, revision;
152 int i = 0;
153
154 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
155
156 ret = platform_driver_register(&ali_ircc_driver);
157 if (ret) {
158 IRDA_ERROR("%s, Can't register driver!\n",
159 ALI_IRCC_DRIVER_NAME);
160 return ret;
161 }
162
163 ret = -ENODEV;
164
165 /* Probe for all the ALi chipsets we know about */
166 for (chip= chips; chip->name; chip++, i++)
167 {
168 IRDA_DEBUG(2, "%s(), Probing for %s ...\n", __func__, chip->name);
169
170 /* Try all config registers for this chip */
171 for (cfg=0; cfg<2; cfg++)
172 {
173 cfg_base = chip->cfg[cfg];
174 if (!cfg_base)
175 continue;
176
177 memset(&info, 0, sizeof(chipio_t));
178 info.cfg_base = cfg_base;
179 info.fir_base = io[i];
180 info.dma = dma[i];
181 info.irq = irq[i];
182
183
184 /* Enter Configuration */
185 outb(chip->entr1, cfg_base);
186 outb(chip->entr2, cfg_base);
187
188 /* Select Logical Device 5 Registers (UART2) */
189 outb(0x07, cfg_base);
190 outb(0x05, cfg_base+1);
191
192 /* Read Chip Identification Register */
193 outb(chip->cid_index, cfg_base);
194 reg = inb(cfg_base+1);
195
196 if (reg == chip->cid_value)
197 {
198 IRDA_DEBUG(2, "%s(), Chip found at 0x%03x\n", __func__, cfg_base);
199
200 outb(0x1F, cfg_base);
201 revision = inb(cfg_base+1);
202 IRDA_DEBUG(2, "%s(), Found %s chip, revision=%d\n", __func__,
203 chip->name, revision);
204
205 /*
206 * If the user supplies the base address, then
207 * we init the chip, if not we probe the values
208 * set by the BIOS
209 */
210 if (io[i] < 2000)
211 {
212 chip->init(chip, &info);
213 }
214 else
215 {
216 chip->probe(chip, &info);
217 }
218
219 if (ali_ircc_open(i, &info) == 0)
220 ret = 0;
221 i++;
222 }
223 else
224 {
225 IRDA_DEBUG(2, "%s(), No %s chip at 0x%03x\n", __func__, chip->name, cfg_base);
226 }
227 /* Exit configuration */
228 outb(0xbb, cfg_base);
229 }
230 }
231
232 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__);
233
234 if (ret)
235 platform_driver_unregister(&ali_ircc_driver);
236
237 return ret;
238 }
239
240 /*
241 * Function ali_ircc_cleanup ()
242 *
243 * Close all configured chips
244 *
245 */
246 static void __exit ali_ircc_cleanup(void)
247 {
248 int i;
249
250 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
251
252 for (i=0; i < ARRAY_SIZE(dev_self); i++) {
253 if (dev_self[i])
254 ali_ircc_close(dev_self[i]);
255 }
256
257 platform_driver_unregister(&ali_ircc_driver);
258
259 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__);
260 }
261
262 static const struct net_device_ops ali_ircc_sir_ops = {
263 .ndo_open = ali_ircc_net_open,
264 .ndo_stop = ali_ircc_net_close,
265 .ndo_start_xmit = ali_ircc_sir_hard_xmit,
266 .ndo_do_ioctl = ali_ircc_net_ioctl,
267 };
268
269 static const struct net_device_ops ali_ircc_fir_ops = {
270 .ndo_open = ali_ircc_net_open,
271 .ndo_stop = ali_ircc_net_close,
272 .ndo_start_xmit = ali_ircc_fir_hard_xmit,
273 .ndo_do_ioctl = ali_ircc_net_ioctl,
274 };
275
276 /*
277 * Function ali_ircc_open (int i, chipio_t *inf)
278 *
279 * Open driver instance
280 *
281 */
282 static int ali_ircc_open(int i, chipio_t *info)
283 {
284 struct net_device *dev;
285 struct ali_ircc_cb *self;
286 int dongle_id;
287 int err;
288
289 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
290
291 if (i >= ARRAY_SIZE(dev_self)) {
292 IRDA_ERROR("%s(), maximum number of supported chips reached!\n",
293 __func__);
294 return -ENOMEM;
295 }
296
297 /* Set FIR FIFO and DMA Threshold */
298 if ((ali_ircc_setup(info)) == -1)
299 return -1;
300
301 dev = alloc_irdadev(sizeof(*self));
302 if (dev == NULL) {
303 IRDA_ERROR("%s(), can't allocate memory for control block!\n",
304 __func__);
305 return -ENOMEM;
306 }
307
308 self = netdev_priv(dev);
309 self->netdev = dev;
310 spin_lock_init(&self->lock);
311
312 /* Need to store self somewhere */
313 dev_self[i] = self;
314 self->index = i;
315
316 /* Initialize IO */
317 self->io.cfg_base = info->cfg_base; /* In ali_ircc_probe_53 assign */
318 self->io.fir_base = info->fir_base; /* info->sir_base = info->fir_base */
319 self->io.sir_base = info->sir_base; /* ALi SIR and FIR use the same address */
320 self->io.irq = info->irq;
321 self->io.fir_ext = CHIP_IO_EXTENT;
322 self->io.dma = info->dma;
323 self->io.fifo_size = 16; /* SIR: 16, FIR: 32 Benjamin 2000/11/1 */
324
325 /* Reserve the ioports that we need */
326 if (!request_region(self->io.fir_base, self->io.fir_ext,
327 ALI_IRCC_DRIVER_NAME)) {
328 IRDA_WARNING("%s(), can't get iobase of 0x%03x\n", __func__,
329 self->io.fir_base);
330 err = -ENODEV;
331 goto err_out1;
332 }
333
334 /* Initialize QoS for this device */
335 irda_init_max_qos_capabilies(&self->qos);
336
337 /* The only value we must override it the baudrate */
338 self->qos.baud_rate.bits = IR_9600|IR_19200|IR_38400|IR_57600|
339 IR_115200|IR_576000|IR_1152000|(IR_4000000 << 8); // benjamin 2000/11/8 05:27PM
340
341 self->qos.min_turn_time.bits = qos_mtt_bits;
342
343 irda_qos_bits_to_value(&self->qos);
344
345 /* Max DMA buffer size needed = (data_size + 6) * (window_size) + 6; */
346 self->rx_buff.truesize = 14384;
347 self->tx_buff.truesize = 14384;
348
349 /* Allocate memory if needed */
350 self->rx_buff.head =
351 dma_alloc_coherent(NULL, self->rx_buff.truesize,
352 &self->rx_buff_dma, GFP_KERNEL);
353 if (self->rx_buff.head == NULL) {
354 err = -ENOMEM;
355 goto err_out2;
356 }
357 memset(self->rx_buff.head, 0, self->rx_buff.truesize);
358
359 self->tx_buff.head =
360 dma_alloc_coherent(NULL, self->tx_buff.truesize,
361 &self->tx_buff_dma, GFP_KERNEL);
362 if (self->tx_buff.head == NULL) {
363 err = -ENOMEM;
364 goto err_out3;
365 }
366 memset(self->tx_buff.head, 0, self->tx_buff.truesize);
367
368 self->rx_buff.in_frame = FALSE;
369 self->rx_buff.state = OUTSIDE_FRAME;
370 self->tx_buff.data = self->tx_buff.head;
371 self->rx_buff.data = self->rx_buff.head;
372
373 /* Reset Tx queue info */
374 self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0;
375 self->tx_fifo.tail = self->tx_buff.head;
376
377 /* Override the network functions we need to use */
378 dev->netdev_ops = &ali_ircc_sir_ops;
379
380 err = register_netdev(dev);
381 if (err) {
382 IRDA_ERROR("%s(), register_netdev() failed!\n", __func__);
383 goto err_out4;
384 }
385 IRDA_MESSAGE("IrDA: Registered device %s\n", dev->name);
386
387 /* Check dongle id */
388 dongle_id = ali_ircc_read_dongle_id(i, info);
389 IRDA_MESSAGE("%s(), %s, Found dongle: %s\n", __func__,
390 ALI_IRCC_DRIVER_NAME, dongle_types[dongle_id]);
391
392 self->io.dongle_id = dongle_id;
393
394 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__);
395
396 return 0;
397
398 err_out4:
399 dma_free_coherent(NULL, self->tx_buff.truesize,
400 self->tx_buff.head, self->tx_buff_dma);
401 err_out3:
402 dma_free_coherent(NULL, self->rx_buff.truesize,
403 self->rx_buff.head, self->rx_buff_dma);
404 err_out2:
405 release_region(self->io.fir_base, self->io.fir_ext);
406 err_out1:
407 dev_self[i] = NULL;
408 free_netdev(dev);
409 return err;
410 }
411
412
413 /*
414 * Function ali_ircc_close (self)
415 *
416 * Close driver instance
417 *
418 */
419 static int __exit ali_ircc_close(struct ali_ircc_cb *self)
420 {
421 int iobase;
422
423 IRDA_DEBUG(4, "%s(), ---------------- Start ----------------\n", __func__);
424
425 IRDA_ASSERT(self != NULL, return -1;);
426
427 iobase = self->io.fir_base;
428
429 /* Remove netdevice */
430 unregister_netdev(self->netdev);
431
432 /* Release the PORT that this driver is using */
433 IRDA_DEBUG(4, "%s(), Releasing Region %03x\n", __func__, self->io.fir_base);
434 release_region(self->io.fir_base, self->io.fir_ext);
435
436 if (self->tx_buff.head)
437 dma_free_coherent(NULL, self->tx_buff.truesize,
438 self->tx_buff.head, self->tx_buff_dma);
439
440 if (self->rx_buff.head)
441 dma_free_coherent(NULL, self->rx_buff.truesize,
442 self->rx_buff.head, self->rx_buff_dma);
443
444 dev_self[self->index] = NULL;
445 free_netdev(self->netdev);
446
447 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__);
448
449 return 0;
450 }
451
452 /*
453 * Function ali_ircc_init_43 (chip, info)
454 *
455 * Initialize the ALi M1543 chip.
456 */
457 static int ali_ircc_init_43(ali_chip_t *chip, chipio_t *info)
458 {
459 /* All controller information like I/O address, DMA channel, IRQ
460 * are set by BIOS
461 */
462
463 return 0;
464 }
465
466 /*
467 * Function ali_ircc_init_53 (chip, info)
468 *
469 * Initialize the ALi M1535 chip.
470 */
471 static int ali_ircc_init_53(ali_chip_t *chip, chipio_t *info)
472 {
473 /* All controller information like I/O address, DMA channel, IRQ
474 * are set by BIOS
475 */
476
477 return 0;
478 }
479
480 /*
481 * Function ali_ircc_probe_53 (chip, info)
482 *
483 * Probes for the ALi M1535D or M1535
484 */
485 static int ali_ircc_probe_53(ali_chip_t *chip, chipio_t *info)
486 {
487 int cfg_base = info->cfg_base;
488 int hi, low, reg;
489
490 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
491
492 /* Enter Configuration */
493 outb(chip->entr1, cfg_base);
494 outb(chip->entr2, cfg_base);
495
496 /* Select Logical Device 5 Registers (UART2) */
497 outb(0x07, cfg_base);
498 outb(0x05, cfg_base+1);
499
500 /* Read address control register */
501 outb(0x60, cfg_base);
502 hi = inb(cfg_base+1);
503 outb(0x61, cfg_base);
504 low = inb(cfg_base+1);
505 info->fir_base = (hi<<8) + low;
506
507 info->sir_base = info->fir_base;
508
509 IRDA_DEBUG(2, "%s(), probing fir_base=0x%03x\n", __func__, info->fir_base);
510
511 /* Read IRQ control register */
512 outb(0x70, cfg_base);
513 reg = inb(cfg_base+1);
514 info->irq = reg & 0x0f;
515 IRDA_DEBUG(2, "%s(), probing irq=%d\n", __func__, info->irq);
516
517 /* Read DMA channel */
518 outb(0x74, cfg_base);
519 reg = inb(cfg_base+1);
520 info->dma = reg & 0x07;
521
522 if(info->dma == 0x04)
523 IRDA_WARNING("%s(), No DMA channel assigned !\n", __func__);
524 else
525 IRDA_DEBUG(2, "%s(), probing dma=%d\n", __func__, info->dma);
526
527 /* Read Enabled Status */
528 outb(0x30, cfg_base);
529 reg = inb(cfg_base+1);
530 info->enabled = (reg & 0x80) && (reg & 0x01);
531 IRDA_DEBUG(2, "%s(), probing enabled=%d\n", __func__, info->enabled);
532
533 /* Read Power Status */
534 outb(0x22, cfg_base);
535 reg = inb(cfg_base+1);
536 info->suspended = (reg & 0x20);
537 IRDA_DEBUG(2, "%s(), probing suspended=%d\n", __func__, info->suspended);
538
539 /* Exit configuration */
540 outb(0xbb, cfg_base);
541
542 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__);
543
544 return 0;
545 }
546
547 /*
548 * Function ali_ircc_setup (info)
549 *
550 * Set FIR FIFO and DMA Threshold
551 * Returns non-negative on success.
552 *
553 */
554 static int ali_ircc_setup(chipio_t *info)
555 {
556 unsigned char tmp;
557 int version;
558 int iobase = info->fir_base;
559
560 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
561
562 /* Locking comments :
563 * Most operations here need to be protected. We are called before
564 * the device instance is created in ali_ircc_open(), therefore
565 * nobody can bother us - Jean II */
566
567 /* Switch to FIR space */
568 SIR2FIR(iobase);
569
570 /* Master Reset */
571 outb(0x40, iobase+FIR_MCR); // benjamin 2000/11/30 11:45AM
572
573 /* Read FIR ID Version Register */
574 switch_bank(iobase, BANK3);
575 version = inb(iobase+FIR_ID_VR);
576
577 /* Should be 0x00 in the M1535/M1535D */
578 if(version != 0x00)
579 {
580 IRDA_ERROR("%s, Wrong chip version %02x\n",
581 ALI_IRCC_DRIVER_NAME, version);
582 return -1;
583 }
584
585 /* Set FIR FIFO Threshold Register */
586 switch_bank(iobase, BANK1);
587 outb(RX_FIFO_Threshold, iobase+FIR_FIFO_TR);
588
589 /* Set FIR DMA Threshold Register */
590 outb(RX_DMA_Threshold, iobase+FIR_DMA_TR);
591
592 /* CRC enable */
593 switch_bank(iobase, BANK2);
594 outb(inb(iobase+FIR_IRDA_CR) | IRDA_CR_CRC, iobase+FIR_IRDA_CR);
595
596 /* NDIS driver set TX Length here BANK2 Alias 3, Alias4*/
597
598 /* Switch to Bank 0 */
599 switch_bank(iobase, BANK0);
600
601 tmp = inb(iobase+FIR_LCR_B);
602 tmp &=~0x20; // disable SIP
603 tmp |= 0x80; // these two steps make RX mode
604 tmp &= 0xbf;
605 outb(tmp, iobase+FIR_LCR_B);
606
607 /* Disable Interrupt */
608 outb(0x00, iobase+FIR_IER);
609
610
611 /* Switch to SIR space */
612 FIR2SIR(iobase);
613
614 IRDA_MESSAGE("%s, driver loaded (Benjamin Kong)\n",
615 ALI_IRCC_DRIVER_NAME);
616
617 /* Enable receive interrupts */
618 // outb(UART_IER_RDI, iobase+UART_IER); //benjamin 2000/11/23 01:25PM
619 // Turn on the interrupts in ali_ircc_net_open
620
621 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__);
622
623 return 0;
624 }
625
626 /*
627 * Function ali_ircc_read_dongle_id (int index, info)
628 *
629 * Try to read dongle indentification. This procedure needs to be executed
630 * once after power-on/reset. It also needs to be used whenever you suspect
631 * that the user may have plugged/unplugged the IrDA Dongle.
632 */
633 static int ali_ircc_read_dongle_id (int i, chipio_t *info)
634 {
635 int dongle_id, reg;
636 int cfg_base = info->cfg_base;
637
638 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
639
640 /* Enter Configuration */
641 outb(chips[i].entr1, cfg_base);
642 outb(chips[i].entr2, cfg_base);
643
644 /* Select Logical Device 5 Registers (UART2) */
645 outb(0x07, cfg_base);
646 outb(0x05, cfg_base+1);
647
648 /* Read Dongle ID */
649 outb(0xf0, cfg_base);
650 reg = inb(cfg_base+1);
651 dongle_id = ((reg>>6)&0x02) | ((reg>>5)&0x01);
652 IRDA_DEBUG(2, "%s(), probing dongle_id=%d, dongle_types=%s\n", __func__,
653 dongle_id, dongle_types[dongle_id]);
654
655 /* Exit configuration */
656 outb(0xbb, cfg_base);
657
658 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__);
659
660 return dongle_id;
661 }
662
663 /*
664 * Function ali_ircc_interrupt (irq, dev_id, regs)
665 *
666 * An interrupt from the chip has arrived. Time to do some work
667 *
668 */
669 static irqreturn_t ali_ircc_interrupt(int irq, void *dev_id)
670 {
671 struct net_device *dev = dev_id;
672 struct ali_ircc_cb *self;
673 int ret;
674
675 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
676
677 self = netdev_priv(dev);
678
679 spin_lock(&self->lock);
680
681 /* Dispatch interrupt handler for the current speed */
682 if (self->io.speed > 115200)
683 ret = ali_ircc_fir_interrupt(self);
684 else
685 ret = ali_ircc_sir_interrupt(self);
686
687 spin_unlock(&self->lock);
688
689 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__);
690 return ret;
691 }
692 /*
693 * Function ali_ircc_fir_interrupt(irq, struct ali_ircc_cb *self)
694 *
695 * Handle MIR/FIR interrupt
696 *
697 */
698 static irqreturn_t ali_ircc_fir_interrupt(struct ali_ircc_cb *self)
699 {
700 __u8 eir, OldMessageCount;
701 int iobase, tmp;
702
703 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__);
704
705 iobase = self->io.fir_base;
706
707 switch_bank(iobase, BANK0);
708 self->InterruptID = inb(iobase+FIR_IIR);
709 self->BusStatus = inb(iobase+FIR_BSR);
710
711 OldMessageCount = (self->LineStatus + 1) & 0x07;
712 self->LineStatus = inb(iobase+FIR_LSR);
713 //self->ier = inb(iobase+FIR_IER); 2000/12/1 04:32PM
714 eir = self->InterruptID & self->ier; /* Mask out the interesting ones */
715
716 IRDA_DEBUG(1, "%s(), self->InterruptID = %x\n", __func__,self->InterruptID);
717 IRDA_DEBUG(1, "%s(), self->LineStatus = %x\n", __func__,self->LineStatus);
718 IRDA_DEBUG(1, "%s(), self->ier = %x\n", __func__,self->ier);
719 IRDA_DEBUG(1, "%s(), eir = %x\n", __func__,eir);
720
721 /* Disable interrupts */
722 SetCOMInterrupts(self, FALSE);
723
724 /* Tx or Rx Interrupt */
725
726 if (eir & IIR_EOM)
727 {
728 if (self->io.direction == IO_XMIT) /* TX */
729 {
730 IRDA_DEBUG(1, "%s(), ******* IIR_EOM (Tx) *******\n", __func__);
731
732 if(ali_ircc_dma_xmit_complete(self))
733 {
734 if (irda_device_txqueue_empty(self->netdev))
735 {
736 /* Prepare for receive */
737 ali_ircc_dma_receive(self);
738 self->ier = IER_EOM;
739 }
740 }
741 else
742 {
743 self->ier = IER_EOM;
744 }
745
746 }
747 else /* RX */
748 {
749 IRDA_DEBUG(1, "%s(), ******* IIR_EOM (Rx) *******\n", __func__);
750
751 if(OldMessageCount > ((self->LineStatus+1) & 0x07))
752 {
753 self->rcvFramesOverflow = TRUE;
754 IRDA_DEBUG(1, "%s(), ******* self->rcvFramesOverflow = TRUE ******** \n", __func__);
755 }
756
757 if (ali_ircc_dma_receive_complete(self))
758 {
759 IRDA_DEBUG(1, "%s(), ******* receive complete ******** \n", __func__);
760
761 self->ier = IER_EOM;
762 }
763 else
764 {
765 IRDA_DEBUG(1, "%s(), ******* Not receive complete ******** \n", __func__);
766
767 self->ier = IER_EOM | IER_TIMER;
768 }
769
770 }
771 }
772 /* Timer Interrupt */
773 else if (eir & IIR_TIMER)
774 {
775 if(OldMessageCount > ((self->LineStatus+1) & 0x07))
776 {
777 self->rcvFramesOverflow = TRUE;
778 IRDA_DEBUG(1, "%s(), ******* self->rcvFramesOverflow = TRUE ******* \n", __func__);
779 }
780 /* Disable Timer */
781 switch_bank(iobase, BANK1);
782 tmp = inb(iobase+FIR_CR);
783 outb( tmp& ~CR_TIMER_EN, iobase+FIR_CR);
784
785 /* Check if this is a Tx timer interrupt */
786 if (self->io.direction == IO_XMIT)
787 {
788 ali_ircc_dma_xmit(self);
789
790 /* Interrupt on EOM */
791 self->ier = IER_EOM;
792
793 }
794 else /* Rx */
795 {
796 if(ali_ircc_dma_receive_complete(self))
797 {
798 self->ier = IER_EOM;
799 }
800 else
801 {
802 self->ier = IER_EOM | IER_TIMER;
803 }
804 }
805 }
806
807 /* Restore Interrupt */
808 SetCOMInterrupts(self, TRUE);
809
810 IRDA_DEBUG(1, "%s(), ----------------- End ---------------\n", __func__);
811 return IRQ_RETVAL(eir);
812 }
813
814 /*
815 * Function ali_ircc_sir_interrupt (irq, self, eir)
816 *
817 * Handle SIR interrupt
818 *
819 */
820 static irqreturn_t ali_ircc_sir_interrupt(struct ali_ircc_cb *self)
821 {
822 int iobase;
823 int iir, lsr;
824
825 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
826
827 iobase = self->io.sir_base;
828
829 iir = inb(iobase+UART_IIR) & UART_IIR_ID;
830 if (iir) {
831 /* Clear interrupt */
832 lsr = inb(iobase+UART_LSR);
833
834 IRDA_DEBUG(4, "%s(), iir=%02x, lsr=%02x, iobase=%#x\n", __func__,
835 iir, lsr, iobase);
836
837 switch (iir)
838 {
839 case UART_IIR_RLSI:
840 IRDA_DEBUG(2, "%s(), RLSI\n", __func__);
841 break;
842 case UART_IIR_RDI:
843 /* Receive interrupt */
844 ali_ircc_sir_receive(self);
845 break;
846 case UART_IIR_THRI:
847 if (lsr & UART_LSR_THRE)
848 {
849 /* Transmitter ready for data */
850 ali_ircc_sir_write_wakeup(self);
851 }
852 break;
853 default:
854 IRDA_DEBUG(0, "%s(), unhandled IIR=%#x\n", __func__, iir);
855 break;
856 }
857
858 }
859
860
861 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__);
862
863 return IRQ_RETVAL(iir);
864 }
865
866
867 /*
868 * Function ali_ircc_sir_receive (self)
869 *
870 * Receive one frame from the infrared port
871 *
872 */
873 static void ali_ircc_sir_receive(struct ali_ircc_cb *self)
874 {
875 int boguscount = 0;
876 int iobase;
877
878 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
879 IRDA_ASSERT(self != NULL, return;);
880
881 iobase = self->io.sir_base;
882
883 /*
884 * Receive all characters in Rx FIFO, unwrap and unstuff them.
885 * async_unwrap_char will deliver all found frames
886 */
887 do {
888 async_unwrap_char(self->netdev, &self->netdev->stats, &self->rx_buff,
889 inb(iobase+UART_RX));
890
891 /* Make sure we don't stay here too long */
892 if (boguscount++ > 32) {
893 IRDA_DEBUG(2,"%s(), breaking!\n", __func__);
894 break;
895 }
896 } while (inb(iobase+UART_LSR) & UART_LSR_DR);
897
898 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
899 }
900
901 /*
902 * Function ali_ircc_sir_write_wakeup (tty)
903 *
904 * Called by the driver when there's room for more data. If we have
905 * more packets to send, we send them here.
906 *
907 */
908 static void ali_ircc_sir_write_wakeup(struct ali_ircc_cb *self)
909 {
910 int actual = 0;
911 int iobase;
912
913 IRDA_ASSERT(self != NULL, return;);
914
915 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ );
916
917 iobase = self->io.sir_base;
918
919 /* Finished with frame? */
920 if (self->tx_buff.len > 0)
921 {
922 /* Write data left in transmit buffer */
923 actual = ali_ircc_sir_write(iobase, self->io.fifo_size,
924 self->tx_buff.data, self->tx_buff.len);
925 self->tx_buff.data += actual;
926 self->tx_buff.len -= actual;
927 }
928 else
929 {
930 if (self->new_speed)
931 {
932 /* We must wait until all data are gone */
933 while(!(inb(iobase+UART_LSR) & UART_LSR_TEMT))
934 IRDA_DEBUG(1, "%s(), UART_LSR_THRE\n", __func__ );
935
936 IRDA_DEBUG(1, "%s(), Changing speed! self->new_speed = %d\n", __func__ , self->new_speed);
937 ali_ircc_change_speed(self, self->new_speed);
938 self->new_speed = 0;
939
940 // benjamin 2000/11/10 06:32PM
941 if (self->io.speed > 115200)
942 {
943 IRDA_DEBUG(2, "%s(), ali_ircc_change_speed from UART_LSR_TEMT \n", __func__ );
944
945 self->ier = IER_EOM;
946 // SetCOMInterrupts(self, TRUE);
947 return;
948 }
949 }
950 else
951 {
952 netif_wake_queue(self->netdev);
953 }
954
955 self->netdev->stats.tx_packets++;
956
957 /* Turn on receive interrupts */
958 outb(UART_IER_RDI, iobase+UART_IER);
959 }
960
961 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
962 }
963
964 static void ali_ircc_change_speed(struct ali_ircc_cb *self, __u32 baud)
965 {
966 struct net_device *dev = self->netdev;
967 int iobase;
968
969 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ );
970
971 IRDA_DEBUG(2, "%s(), setting speed = %d \n", __func__ , baud);
972
973 /* This function *must* be called with irq off and spin-lock.
974 * - Jean II */
975
976 iobase = self->io.fir_base;
977
978 SetCOMInterrupts(self, FALSE); // 2000/11/24 11:43AM
979
980 /* Go to MIR, FIR Speed */
981 if (baud > 115200)
982 {
983
984
985 ali_ircc_fir_change_speed(self, baud);
986
987 /* Install FIR xmit handler*/
988 dev->netdev_ops = &ali_ircc_fir_ops;
989
990 /* Enable Interuupt */
991 self->ier = IER_EOM; // benjamin 2000/11/20 07:24PM
992
993 /* Be ready for incomming frames */
994 ali_ircc_dma_receive(self); // benajmin 2000/11/8 07:46PM not complete
995 }
996 /* Go to SIR Speed */
997 else
998 {
999 ali_ircc_sir_change_speed(self, baud);
1000
1001 /* Install SIR xmit handler*/
1002 dev->netdev_ops = &ali_ircc_sir_ops;
1003 }
1004
1005
1006 SetCOMInterrupts(self, TRUE); // 2000/11/24 11:43AM
1007
1008 netif_wake_queue(self->netdev);
1009
1010 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
1011 }
1012
1013 static void ali_ircc_fir_change_speed(struct ali_ircc_cb *priv, __u32 baud)
1014 {
1015
1016 int iobase;
1017 struct ali_ircc_cb *self = (struct ali_ircc_cb *) priv;
1018 struct net_device *dev;
1019
1020 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ );
1021
1022 IRDA_ASSERT(self != NULL, return;);
1023
1024 dev = self->netdev;
1025 iobase = self->io.fir_base;
1026
1027 IRDA_DEBUG(1, "%s(), self->io.speed = %d, change to speed = %d\n", __func__ ,self->io.speed,baud);
1028
1029 /* Come from SIR speed */
1030 if(self->io.speed <=115200)
1031 {
1032 SIR2FIR(iobase);
1033 }
1034
1035 /* Update accounting for new speed */
1036 self->io.speed = baud;
1037
1038 // Set Dongle Speed mode
1039 ali_ircc_change_dongle_speed(self, baud);
1040
1041 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
1042 }
1043
1044 /*
1045 * Function ali_sir_change_speed (self, speed)
1046 *
1047 * Set speed of IrDA port to specified baudrate
1048 *
1049 */
1050 static void ali_ircc_sir_change_speed(struct ali_ircc_cb *priv, __u32 speed)
1051 {
1052 struct ali_ircc_cb *self = (struct ali_ircc_cb *) priv;
1053 unsigned long flags;
1054 int iobase;
1055 int fcr; /* FIFO control reg */
1056 int lcr; /* Line control reg */
1057 int divisor;
1058
1059 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ );
1060
1061 IRDA_DEBUG(1, "%s(), Setting speed to: %d\n", __func__ , speed);
1062
1063 IRDA_ASSERT(self != NULL, return;);
1064
1065 iobase = self->io.sir_base;
1066
1067 /* Come from MIR or FIR speed */
1068 if(self->io.speed >115200)
1069 {
1070 // Set Dongle Speed mode first
1071 ali_ircc_change_dongle_speed(self, speed);
1072
1073 FIR2SIR(iobase);
1074 }
1075
1076 // Clear Line and Auxiluary status registers 2000/11/24 11:47AM
1077
1078 inb(iobase+UART_LSR);
1079 inb(iobase+UART_SCR);
1080
1081 /* Update accounting for new speed */
1082 self->io.speed = speed;
1083
1084 spin_lock_irqsave(&self->lock, flags);
1085
1086 divisor = 115200/speed;
1087
1088 fcr = UART_FCR_ENABLE_FIFO;
1089
1090 /*
1091 * Use trigger level 1 to avoid 3 ms. timeout delay at 9600 bps, and
1092 * almost 1,7 ms at 19200 bps. At speeds above that we can just forget
1093 * about this timeout since it will always be fast enough.
1094 */
1095 if (self->io.speed < 38400)
1096 fcr |= UART_FCR_TRIGGER_1;
1097 else
1098 fcr |= UART_FCR_TRIGGER_14;
1099
1100 /* IrDA ports use 8N1 */
1101 lcr = UART_LCR_WLEN8;
1102
1103 outb(UART_LCR_DLAB | lcr, iobase+UART_LCR); /* Set DLAB */
1104 outb(divisor & 0xff, iobase+UART_DLL); /* Set speed */
1105 outb(divisor >> 8, iobase+UART_DLM);
1106 outb(lcr, iobase+UART_LCR); /* Set 8N1 */
1107 outb(fcr, iobase+UART_FCR); /* Enable FIFO's */
1108
1109 /* without this, the conection will be broken after come back from FIR speed,
1110 but with this, the SIR connection is harder to established */
1111 outb((UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2), iobase+UART_MCR);
1112
1113 spin_unlock_irqrestore(&self->lock, flags);
1114
1115 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
1116 }
1117
1118 static void ali_ircc_change_dongle_speed(struct ali_ircc_cb *priv, int speed)
1119 {
1120
1121 struct ali_ircc_cb *self = (struct ali_ircc_cb *) priv;
1122 int iobase,dongle_id;
1123 int tmp = 0;
1124
1125 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ );
1126
1127 iobase = self->io.fir_base; /* or iobase = self->io.sir_base; */
1128 dongle_id = self->io.dongle_id;
1129
1130 /* We are already locked, no need to do it again */
1131
1132 IRDA_DEBUG(1, "%s(), Set Speed for %s , Speed = %d\n", __func__ , dongle_types[dongle_id], speed);
1133
1134 switch_bank(iobase, BANK2);
1135 tmp = inb(iobase+FIR_IRDA_CR);
1136
1137 /* IBM type dongle */
1138 if(dongle_id == 0)
1139 {
1140 if(speed == 4000000)
1141 {
1142 // __ __
1143 // SD/MODE __| |__ __
1144 // __ __
1145 // IRTX __ __| |__
1146 // T1 T2 T3 T4 T5
1147
1148 tmp &= ~IRDA_CR_HDLC; // HDLC=0
1149 tmp |= IRDA_CR_CRC; // CRC=1
1150
1151 switch_bank(iobase, BANK2);
1152 outb(tmp, iobase+FIR_IRDA_CR);
1153
1154 // T1 -> SD/MODE:0 IRTX:0
1155 tmp &= ~0x09;
1156 tmp |= 0x02;
1157 outb(tmp, iobase+FIR_IRDA_CR);
1158 udelay(2);
1159
1160 // T2 -> SD/MODE:1 IRTX:0
1161 tmp &= ~0x01;
1162 tmp |= 0x0a;
1163 outb(tmp, iobase+FIR_IRDA_CR);
1164 udelay(2);
1165
1166 // T3 -> SD/MODE:1 IRTX:1
1167 tmp |= 0x0b;
1168 outb(tmp, iobase+FIR_IRDA_CR);
1169 udelay(2);
1170
1171 // T4 -> SD/MODE:0 IRTX:1
1172 tmp &= ~0x08;
1173 tmp |= 0x03;
1174 outb(tmp, iobase+FIR_IRDA_CR);
1175 udelay(2);
1176
1177 // T5 -> SD/MODE:0 IRTX:0
1178 tmp &= ~0x09;
1179 tmp |= 0x02;
1180 outb(tmp, iobase+FIR_IRDA_CR);
1181 udelay(2);
1182
1183 // reset -> Normal TX output Signal
1184 outb(tmp & ~0x02, iobase+FIR_IRDA_CR);
1185 }
1186 else /* speed <=1152000 */
1187 {
1188 // __
1189 // SD/MODE __| |__
1190 //
1191 // IRTX ________
1192 // T1 T2 T3
1193
1194 /* MIR 115200, 57600 */
1195 if (speed==1152000)
1196 {
1197 tmp |= 0xA0; //HDLC=1, 1.152Mbps=1
1198 }
1199 else
1200 {
1201 tmp &=~0x80; //HDLC 0.576Mbps
1202 tmp |= 0x20; //HDLC=1,
1203 }
1204
1205 tmp |= IRDA_CR_CRC; // CRC=1
1206
1207 switch_bank(iobase, BANK2);
1208 outb(tmp, iobase+FIR_IRDA_CR);
1209
1210 /* MIR 115200, 57600 */
1211
1212 //switch_bank(iobase, BANK2);
1213 // T1 -> SD/MODE:0 IRTX:0
1214 tmp &= ~0x09;
1215 tmp |= 0x02;
1216 outb(tmp, iobase+FIR_IRDA_CR);
1217 udelay(2);
1218
1219 // T2 -> SD/MODE:1 IRTX:0
1220 tmp &= ~0x01;
1221 tmp |= 0x0a;
1222 outb(tmp, iobase+FIR_IRDA_CR);
1223
1224 // T3 -> SD/MODE:0 IRTX:0
1225 tmp &= ~0x09;
1226 tmp |= 0x02;
1227 outb(tmp, iobase+FIR_IRDA_CR);
1228 udelay(2);
1229
1230 // reset -> Normal TX output Signal
1231 outb(tmp & ~0x02, iobase+FIR_IRDA_CR);
1232 }
1233 }
1234 else if (dongle_id == 1) /* HP HDSL-3600 */
1235 {
1236 switch(speed)
1237 {
1238 case 4000000:
1239 tmp &= ~IRDA_CR_HDLC; // HDLC=0
1240 break;
1241
1242 case 1152000:
1243 tmp |= 0xA0; // HDLC=1, 1.152Mbps=1
1244 break;
1245
1246 case 576000:
1247 tmp &=~0x80; // HDLC 0.576Mbps
1248 tmp |= 0x20; // HDLC=1,
1249 break;
1250 }
1251
1252 tmp |= IRDA_CR_CRC; // CRC=1
1253
1254 switch_bank(iobase, BANK2);
1255 outb(tmp, iobase+FIR_IRDA_CR);
1256 }
1257 else /* HP HDSL-1100 */
1258 {
1259 if(speed <= 115200) /* SIR */
1260 {
1261
1262 tmp &= ~IRDA_CR_FIR_SIN; // HP sin select = 0
1263
1264 switch_bank(iobase, BANK2);
1265 outb(tmp, iobase+FIR_IRDA_CR);
1266 }
1267 else /* MIR FIR */
1268 {
1269
1270 switch(speed)
1271 {
1272 case 4000000:
1273 tmp &= ~IRDA_CR_HDLC; // HDLC=0
1274 break;
1275
1276 case 1152000:
1277 tmp |= 0xA0; // HDLC=1, 1.152Mbps=1
1278 break;
1279
1280 case 576000:
1281 tmp &=~0x80; // HDLC 0.576Mbps
1282 tmp |= 0x20; // HDLC=1,
1283 break;
1284 }
1285
1286 tmp |= IRDA_CR_CRC; // CRC=1
1287 tmp |= IRDA_CR_FIR_SIN; // HP sin select = 1
1288
1289 switch_bank(iobase, BANK2);
1290 outb(tmp, iobase+FIR_IRDA_CR);
1291 }
1292 }
1293
1294 switch_bank(iobase, BANK0);
1295
1296 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
1297 }
1298
1299 /*
1300 * Function ali_ircc_sir_write (driver)
1301 *
1302 * Fill Tx FIFO with transmit data
1303 *
1304 */
1305 static int ali_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len)
1306 {
1307 int actual = 0;
1308
1309 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ );
1310
1311 /* Tx FIFO should be empty! */
1312 if (!(inb(iobase+UART_LSR) & UART_LSR_THRE)) {
1313 IRDA_DEBUG(0, "%s(), failed, fifo not empty!\n", __func__ );
1314 return 0;
1315 }
1316
1317 /* Fill FIFO with current frame */
1318 while ((fifo_size-- > 0) && (actual < len)) {
1319 /* Transmit next byte */
1320 outb(buf[actual], iobase+UART_TX);
1321
1322 actual++;
1323 }
1324
1325 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
1326 return actual;
1327 }
1328
1329 /*
1330 * Function ali_ircc_net_open (dev)
1331 *
1332 * Start the device
1333 *
1334 */
1335 static int ali_ircc_net_open(struct net_device *dev)
1336 {
1337 struct ali_ircc_cb *self;
1338 int iobase;
1339 char hwname[32];
1340
1341 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ );
1342
1343 IRDA_ASSERT(dev != NULL, return -1;);
1344
1345 self = netdev_priv(dev);
1346
1347 IRDA_ASSERT(self != NULL, return 0;);
1348
1349 iobase = self->io.fir_base;
1350
1351 /* Request IRQ and install Interrupt Handler */
1352 if (request_irq(self->io.irq, ali_ircc_interrupt, 0, dev->name, dev))
1353 {
1354 IRDA_WARNING("%s, unable to allocate irq=%d\n",
1355 ALI_IRCC_DRIVER_NAME,
1356 self->io.irq);
1357 return -EAGAIN;
1358 }
1359
1360 /*
1361 * Always allocate the DMA channel after the IRQ, and clean up on
1362 * failure.
1363 */
1364 if (request_dma(self->io.dma, dev->name)) {
1365 IRDA_WARNING("%s, unable to allocate dma=%d\n",
1366 ALI_IRCC_DRIVER_NAME,
1367 self->io.dma);
1368 free_irq(self->io.irq, self);
1369 return -EAGAIN;
1370 }
1371
1372 /* Turn on interrups */
1373 outb(UART_IER_RDI , iobase+UART_IER);
1374
1375 /* Ready to play! */
1376 netif_start_queue(dev); //benjamin by irport
1377
1378 /* Give self a hardware name */
1379 sprintf(hwname, "ALI-FIR @ 0x%03x", self->io.fir_base);
1380
1381 /*
1382 * Open new IrLAP layer instance, now that everything should be
1383 * initialized properly
1384 */
1385 self->irlap = irlap_open(dev, &self->qos, hwname);
1386
1387 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
1388
1389 return 0;
1390 }
1391
1392 /*
1393 * Function ali_ircc_net_close (dev)
1394 *
1395 * Stop the device
1396 *
1397 */
1398 static int ali_ircc_net_close(struct net_device *dev)
1399 {
1400
1401 struct ali_ircc_cb *self;
1402 //int iobase;
1403
1404 IRDA_DEBUG(4, "%s(), ---------------- Start ----------------\n", __func__ );
1405
1406 IRDA_ASSERT(dev != NULL, return -1;);
1407
1408 self = netdev_priv(dev);
1409 IRDA_ASSERT(self != NULL, return 0;);
1410
1411 /* Stop device */
1412 netif_stop_queue(dev);
1413
1414 /* Stop and remove instance of IrLAP */
1415 if (self->irlap)
1416 irlap_close(self->irlap);
1417 self->irlap = NULL;
1418
1419 disable_dma(self->io.dma);
1420
1421 /* Disable interrupts */
1422 SetCOMInterrupts(self, FALSE);
1423
1424 free_irq(self->io.irq, dev);
1425 free_dma(self->io.dma);
1426
1427 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
1428
1429 return 0;
1430 }
1431
1432 /*
1433 * Function ali_ircc_fir_hard_xmit (skb, dev)
1434 *
1435 * Transmit the frame
1436 *
1437 */
1438 static int ali_ircc_fir_hard_xmit(struct sk_buff *skb, struct net_device *dev)
1439 {
1440 struct ali_ircc_cb *self;
1441 unsigned long flags;
1442 int iobase;
1443 __u32 speed;
1444 int mtt, diff;
1445
1446 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ );
1447
1448 self = netdev_priv(dev);
1449 iobase = self->io.fir_base;
1450
1451 netif_stop_queue(dev);
1452
1453 /* Make sure tests *& speed change are atomic */
1454 spin_lock_irqsave(&self->lock, flags);
1455
1456 /* Note : you should make sure that speed changes are not going
1457 * to corrupt any outgoing frame. Look at nsc-ircc for the gory
1458 * details - Jean II */
1459
1460 /* Check if we need to change the speed */
1461 speed = irda_get_next_speed(skb);
1462 if ((speed != self->io.speed) && (speed != -1)) {
1463 /* Check for empty frame */
1464 if (!skb->len) {
1465 ali_ircc_change_speed(self, speed);
1466 dev->trans_start = jiffies;
1467 spin_unlock_irqrestore(&self->lock, flags);
1468 dev_kfree_skb(skb);
1469 return NETDEV_TX_OK;
1470 } else
1471 self->new_speed = speed;
1472 }
1473
1474 /* Register and copy this frame to DMA memory */
1475 self->tx_fifo.queue[self->tx_fifo.free].start = self->tx_fifo.tail;
1476 self->tx_fifo.queue[self->tx_fifo.free].len = skb->len;
1477 self->tx_fifo.tail += skb->len;
1478
1479 dev->stats.tx_bytes += skb->len;
1480
1481 skb_copy_from_linear_data(skb, self->tx_fifo.queue[self->tx_fifo.free].start,
1482 skb->len);
1483 self->tx_fifo.len++;
1484 self->tx_fifo.free++;
1485
1486 /* Start transmit only if there is currently no transmit going on */
1487 if (self->tx_fifo.len == 1)
1488 {
1489 /* Check if we must wait the min turn time or not */
1490 mtt = irda_get_mtt(skb);
1491
1492 if (mtt)
1493 {
1494 /* Check how much time we have used already */
1495 do_gettimeofday(&self->now);
1496
1497 diff = self->now.tv_usec - self->stamp.tv_usec;
1498 /* self->stamp is set from ali_ircc_dma_receive_complete() */
1499
1500 IRDA_DEBUG(1, "%s(), ******* diff = %d ******* \n", __func__ , diff);
1501
1502 if (diff < 0)
1503 diff += 1000000;
1504
1505 /* Check if the mtt is larger than the time we have
1506 * already used by all the protocol processing
1507 */
1508 if (mtt > diff)
1509 {
1510 mtt -= diff;
1511
1512 /*
1513 * Use timer if delay larger than 1000 us, and
1514 * use udelay for smaller values which should
1515 * be acceptable
1516 */
1517 if (mtt > 500)
1518 {
1519 /* Adjust for timer resolution */
1520 mtt = (mtt+250) / 500; /* 4 discard, 5 get advanced, Let's round off */
1521
1522 IRDA_DEBUG(1, "%s(), ************** mtt = %d ***********\n", __func__ , mtt);
1523
1524 /* Setup timer */
1525 if (mtt == 1) /* 500 us */
1526 {
1527 switch_bank(iobase, BANK1);
1528 outb(TIMER_IIR_500, iobase+FIR_TIMER_IIR);
1529 }
1530 else if (mtt == 2) /* 1 ms */
1531 {
1532 switch_bank(iobase, BANK1);
1533 outb(TIMER_IIR_1ms, iobase+FIR_TIMER_IIR);
1534 }
1535 else /* > 2ms -> 4ms */
1536 {
1537 switch_bank(iobase, BANK1);
1538 outb(TIMER_IIR_2ms, iobase+FIR_TIMER_IIR);
1539 }
1540
1541
1542 /* Start timer */
1543 outb(inb(iobase+FIR_CR) | CR_TIMER_EN, iobase+FIR_CR);
1544 self->io.direction = IO_XMIT;
1545
1546 /* Enable timer interrupt */
1547 self->ier = IER_TIMER;
1548 SetCOMInterrupts(self, TRUE);
1549
1550 /* Timer will take care of the rest */
1551 goto out;
1552 }
1553 else
1554 udelay(mtt);
1555 } // if (if (mtt > diff)
1556 }// if (mtt)
1557
1558 /* Enable EOM interrupt */
1559 self->ier = IER_EOM;
1560 SetCOMInterrupts(self, TRUE);
1561
1562 /* Transmit frame */
1563 ali_ircc_dma_xmit(self);
1564 } // if (self->tx_fifo.len == 1)
1565
1566 out:
1567
1568 /* Not busy transmitting anymore if window is not full */
1569 if (self->tx_fifo.free < MAX_TX_WINDOW)
1570 netif_wake_queue(self->netdev);
1571
1572 /* Restore bank register */
1573 switch_bank(iobase, BANK0);
1574
1575 dev->trans_start = jiffies;
1576 spin_unlock_irqrestore(&self->lock, flags);
1577 dev_kfree_skb(skb);
1578
1579 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
1580 return NETDEV_TX_OK;
1581 }
1582
1583
1584 static void ali_ircc_dma_xmit(struct ali_ircc_cb *self)
1585 {
1586 int iobase, tmp;
1587 unsigned char FIFO_OPTI, Hi, Lo;
1588
1589
1590 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ );
1591
1592 iobase = self->io.fir_base;
1593
1594 /* FIFO threshold , this method comes from NDIS5 code */
1595
1596 if(self->tx_fifo.queue[self->tx_fifo.ptr].len < TX_FIFO_Threshold)
1597 FIFO_OPTI = self->tx_fifo.queue[self->tx_fifo.ptr].len-1;
1598 else
1599 FIFO_OPTI = TX_FIFO_Threshold;
1600
1601 /* Disable DMA */
1602 switch_bank(iobase, BANK1);
1603 outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR);
1604
1605 self->io.direction = IO_XMIT;
1606
1607 irda_setup_dma(self->io.dma,
1608 ((u8 *)self->tx_fifo.queue[self->tx_fifo.ptr].start -
1609 self->tx_buff.head) + self->tx_buff_dma,
1610 self->tx_fifo.queue[self->tx_fifo.ptr].len,
1611 DMA_TX_MODE);
1612
1613 /* Reset Tx FIFO */
1614 switch_bank(iobase, BANK0);
1615 outb(LCR_A_FIFO_RESET, iobase+FIR_LCR_A);
1616
1617 /* Set Tx FIFO threshold */
1618 if (self->fifo_opti_buf!=FIFO_OPTI)
1619 {
1620 switch_bank(iobase, BANK1);
1621 outb(FIFO_OPTI, iobase+FIR_FIFO_TR) ;
1622 self->fifo_opti_buf=FIFO_OPTI;
1623 }
1624
1625 /* Set Tx DMA threshold */
1626 switch_bank(iobase, BANK1);
1627 outb(TX_DMA_Threshold, iobase+FIR_DMA_TR);
1628
1629 /* Set max Tx frame size */
1630 Hi = (self->tx_fifo.queue[self->tx_fifo.ptr].len >> 8) & 0x0f;
1631 Lo = self->tx_fifo.queue[self->tx_fifo.ptr].len & 0xff;
1632 switch_bank(iobase, BANK2);
1633 outb(Hi, iobase+FIR_TX_DSR_HI);
1634 outb(Lo, iobase+FIR_TX_DSR_LO);
1635
1636 /* Disable SIP , Disable Brick Wall (we don't support in TX mode), Change to TX mode */
1637 switch_bank(iobase, BANK0);
1638 tmp = inb(iobase+FIR_LCR_B);
1639 tmp &= ~0x20; // Disable SIP
1640 outb(((unsigned char)(tmp & 0x3f) | LCR_B_TX_MODE) & ~LCR_B_BW, iobase+FIR_LCR_B);
1641 IRDA_DEBUG(1, "%s(), ******* Change to TX mode: FIR_LCR_B = 0x%x ******* \n", __func__ , inb(iobase+FIR_LCR_B));
1642
1643 outb(0, iobase+FIR_LSR);
1644
1645 /* Enable DMA and Burst Mode */
1646 switch_bank(iobase, BANK1);
1647 outb(inb(iobase+FIR_CR) | CR_DMA_EN | CR_DMA_BURST, iobase+FIR_CR);
1648
1649 switch_bank(iobase, BANK0);
1650
1651 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
1652 }
1653
1654 static int ali_ircc_dma_xmit_complete(struct ali_ircc_cb *self)
1655 {
1656 int iobase;
1657 int ret = TRUE;
1658
1659 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ );
1660
1661 iobase = self->io.fir_base;
1662
1663 /* Disable DMA */
1664 switch_bank(iobase, BANK1);
1665 outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR);
1666
1667 /* Check for underrun! */
1668 switch_bank(iobase, BANK0);
1669 if((inb(iobase+FIR_LSR) & LSR_FRAME_ABORT) == LSR_FRAME_ABORT)
1670
1671 {
1672 IRDA_ERROR("%s(), ********* LSR_FRAME_ABORT *********\n", __func__);
1673 self->netdev->stats.tx_errors++;
1674 self->netdev->stats.tx_fifo_errors++;
1675 }
1676 else
1677 {
1678 self->netdev->stats.tx_packets++;
1679 }
1680
1681 /* Check if we need to change the speed */
1682 if (self->new_speed)
1683 {
1684 ali_ircc_change_speed(self, self->new_speed);
1685 self->new_speed = 0;
1686 }
1687
1688 /* Finished with this frame, so prepare for next */
1689 self->tx_fifo.ptr++;
1690 self->tx_fifo.len--;
1691
1692 /* Any frames to be sent back-to-back? */
1693 if (self->tx_fifo.len)
1694 {
1695 ali_ircc_dma_xmit(self);
1696
1697 /* Not finished yet! */
1698 ret = FALSE;
1699 }
1700 else
1701 { /* Reset Tx FIFO info */
1702 self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0;
1703 self->tx_fifo.tail = self->tx_buff.head;
1704 }
1705
1706 /* Make sure we have room for more frames */
1707 if (self->tx_fifo.free < MAX_TX_WINDOW) {
1708 /* Not busy transmitting anymore */
1709 /* Tell the network layer, that we can accept more frames */
1710 netif_wake_queue(self->netdev);
1711 }
1712
1713 switch_bank(iobase, BANK0);
1714
1715 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
1716 return ret;
1717 }
1718
1719 /*
1720 * Function ali_ircc_dma_receive (self)
1721 *
1722 * Get ready for receiving a frame. The device will initiate a DMA
1723 * if it starts to receive a frame.
1724 *
1725 */
1726 static int ali_ircc_dma_receive(struct ali_ircc_cb *self)
1727 {
1728 int iobase, tmp;
1729
1730 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ );
1731
1732 iobase = self->io.fir_base;
1733
1734 /* Reset Tx FIFO info */
1735 self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0;
1736 self->tx_fifo.tail = self->tx_buff.head;
1737
1738 /* Disable DMA */
1739 switch_bank(iobase, BANK1);
1740 outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR);
1741
1742 /* Reset Message Count */
1743 switch_bank(iobase, BANK0);
1744 outb(0x07, iobase+FIR_LSR);
1745
1746 self->rcvFramesOverflow = FALSE;
1747
1748 self->LineStatus = inb(iobase+FIR_LSR) ;
1749
1750 /* Reset Rx FIFO info */
1751 self->io.direction = IO_RECV;
1752 self->rx_buff.data = self->rx_buff.head;
1753
1754 /* Reset Rx FIFO */
1755 // switch_bank(iobase, BANK0);
1756 outb(LCR_A_FIFO_RESET, iobase+FIR_LCR_A);
1757
1758 self->st_fifo.len = self->st_fifo.pending_bytes = 0;
1759 self->st_fifo.tail = self->st_fifo.head = 0;
1760
1761 irda_setup_dma(self->io.dma, self->rx_buff_dma, self->rx_buff.truesize,
1762 DMA_RX_MODE);
1763
1764 /* Set Receive Mode,Brick Wall */
1765 //switch_bank(iobase, BANK0);
1766 tmp = inb(iobase+FIR_LCR_B);
1767 outb((unsigned char)(tmp &0x3f) | LCR_B_RX_MODE | LCR_B_BW , iobase + FIR_LCR_B); // 2000/12/1 05:16PM
1768 IRDA_DEBUG(1, "%s(), *** Change To RX mode: FIR_LCR_B = 0x%x *** \n", __func__ , inb(iobase+FIR_LCR_B));
1769
1770 /* Set Rx Threshold */
1771 switch_bank(iobase, BANK1);
1772 outb(RX_FIFO_Threshold, iobase+FIR_FIFO_TR);
1773 outb(RX_DMA_Threshold, iobase+FIR_DMA_TR);
1774
1775 /* Enable DMA and Burst Mode */
1776 // switch_bank(iobase, BANK1);
1777 outb(CR_DMA_EN | CR_DMA_BURST, iobase+FIR_CR);
1778
1779 switch_bank(iobase, BANK0);
1780 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
1781 return 0;
1782 }
1783
1784 static int ali_ircc_dma_receive_complete(struct ali_ircc_cb *self)
1785 {
1786 struct st_fifo *st_fifo;
1787 struct sk_buff *skb;
1788 __u8 status, MessageCount;
1789 int len, i, iobase, val;
1790
1791 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ );
1792
1793 st_fifo = &self->st_fifo;
1794 iobase = self->io.fir_base;
1795
1796 switch_bank(iobase, BANK0);
1797 MessageCount = inb(iobase+ FIR_LSR)&0x07;
1798
1799 if (MessageCount > 0)
1800 IRDA_DEBUG(0, "%s(), Messsage count = %d,\n", __func__ , MessageCount);
1801
1802 for (i=0; i<=MessageCount; i++)
1803 {
1804 /* Bank 0 */
1805 switch_bank(iobase, BANK0);
1806 status = inb(iobase+FIR_LSR);
1807
1808 switch_bank(iobase, BANK2);
1809 len = inb(iobase+FIR_RX_DSR_HI) & 0x0f;
1810 len = len << 8;
1811 len |= inb(iobase+FIR_RX_DSR_LO);
1812
1813 IRDA_DEBUG(1, "%s(), RX Length = 0x%.2x,\n", __func__ , len);
1814 IRDA_DEBUG(1, "%s(), RX Status = 0x%.2x,\n", __func__ , status);
1815
1816 if (st_fifo->tail >= MAX_RX_WINDOW) {
1817 IRDA_DEBUG(0, "%s(), window is full!\n", __func__ );
1818 continue;
1819 }
1820
1821 st_fifo->entries[st_fifo->tail].status = status;
1822 st_fifo->entries[st_fifo->tail].len = len;
1823 st_fifo->pending_bytes += len;
1824 st_fifo->tail++;
1825 st_fifo->len++;
1826 }
1827
1828 for (i=0; i<=MessageCount; i++)
1829 {
1830 /* Get first entry */
1831 status = st_fifo->entries[st_fifo->head].status;
1832 len = st_fifo->entries[st_fifo->head].len;
1833 st_fifo->pending_bytes -= len;
1834 st_fifo->head++;
1835 st_fifo->len--;
1836
1837 /* Check for errors */
1838 if ((status & 0xd8) || self->rcvFramesOverflow || (len==0))
1839 {
1840 IRDA_DEBUG(0,"%s(), ************* RX Errors ************ \n", __func__ );
1841
1842 /* Skip frame */
1843 self->netdev->stats.rx_errors++;
1844
1845 self->rx_buff.data += len;
1846
1847 if (status & LSR_FIFO_UR)
1848 {
1849 self->netdev->stats.rx_frame_errors++;
1850 IRDA_DEBUG(0,"%s(), ************* FIFO Errors ************ \n", __func__ );
1851 }
1852 if (status & LSR_FRAME_ERROR)
1853 {
1854 self->netdev->stats.rx_frame_errors++;
1855 IRDA_DEBUG(0,"%s(), ************* FRAME Errors ************ \n", __func__ );
1856 }
1857
1858 if (status & LSR_CRC_ERROR)
1859 {
1860 self->netdev->stats.rx_crc_errors++;
1861 IRDA_DEBUG(0,"%s(), ************* CRC Errors ************ \n", __func__ );
1862 }
1863
1864 if(self->rcvFramesOverflow)
1865 {
1866 self->netdev->stats.rx_frame_errors++;
1867 IRDA_DEBUG(0,"%s(), ************* Overran DMA buffer ************ \n", __func__ );
1868 }
1869 if(len == 0)
1870 {
1871 self->netdev->stats.rx_frame_errors++;
1872 IRDA_DEBUG(0,"%s(), ********** Receive Frame Size = 0 ********* \n", __func__ );
1873 }
1874 }
1875 else
1876 {
1877
1878 if (st_fifo->pending_bytes < 32)
1879 {
1880 switch_bank(iobase, BANK0);
1881 val = inb(iobase+FIR_BSR);
1882 if ((val& BSR_FIFO_NOT_EMPTY)== 0x80)
1883 {
1884 IRDA_DEBUG(0, "%s(), ************* BSR_FIFO_NOT_EMPTY ************ \n", __func__ );
1885
1886 /* Put this entry back in fifo */
1887 st_fifo->head--;
1888 st_fifo->len++;
1889 st_fifo->pending_bytes += len;
1890 st_fifo->entries[st_fifo->head].status = status;
1891 st_fifo->entries[st_fifo->head].len = len;
1892
1893 /*
1894 * DMA not finished yet, so try again
1895 * later, set timer value, resolution
1896 * 500 us
1897 */
1898
1899 switch_bank(iobase, BANK1);
1900 outb(TIMER_IIR_500, iobase+FIR_TIMER_IIR); // 2001/1/2 05:07PM
1901
1902 /* Enable Timer */
1903 outb(inb(iobase+FIR_CR) | CR_TIMER_EN, iobase+FIR_CR);
1904
1905 return FALSE; /* I'll be back! */
1906 }
1907 }
1908
1909 /*
1910 * Remember the time we received this frame, so we can
1911 * reduce the min turn time a bit since we will know
1912 * how much time we have used for protocol processing
1913 */
1914 do_gettimeofday(&self->stamp);
1915
1916 skb = dev_alloc_skb(len+1);
1917 if (skb == NULL)
1918 {
1919 IRDA_WARNING("%s(), memory squeeze, "
1920 "dropping frame.\n",
1921 __func__);
1922 self->netdev->stats.rx_dropped++;
1923
1924 return FALSE;
1925 }
1926
1927 /* Make sure IP header gets aligned */
1928 skb_reserve(skb, 1);
1929
1930 /* Copy frame without CRC, CRC is removed by hardware*/
1931 skb_put(skb, len);
1932 skb_copy_to_linear_data(skb, self->rx_buff.data, len);
1933
1934 /* Move to next frame */
1935 self->rx_buff.data += len;
1936 self->netdev->stats.rx_bytes += len;
1937 self->netdev->stats.rx_packets++;
1938
1939 skb->dev = self->netdev;
1940 skb_reset_mac_header(skb);
1941 skb->protocol = htons(ETH_P_IRDA);
1942 netif_rx(skb);
1943 }
1944 }
1945
1946 switch_bank(iobase, BANK0);
1947
1948 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
1949 return TRUE;
1950 }
1951
1952
1953
1954 /*
1955 * Function ali_ircc_sir_hard_xmit (skb, dev)
1956 *
1957 * Transmit the frame!
1958 *
1959 */
1960 static int ali_ircc_sir_hard_xmit(struct sk_buff *skb, struct net_device *dev)
1961 {
1962 struct ali_ircc_cb *self;
1963 unsigned long flags;
1964 int iobase;
1965 __u32 speed;
1966
1967 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ );
1968
1969 IRDA_ASSERT(dev != NULL, return 0;);
1970
1971 self = netdev_priv(dev);
1972 IRDA_ASSERT(self != NULL, return 0;);
1973
1974 iobase = self->io.sir_base;
1975
1976 netif_stop_queue(dev);
1977
1978 /* Make sure tests *& speed change are atomic */
1979 spin_lock_irqsave(&self->lock, flags);
1980
1981 /* Note : you should make sure that speed changes are not going
1982 * to corrupt any outgoing frame. Look at nsc-ircc for the gory
1983 * details - Jean II */
1984
1985 /* Check if we need to change the speed */
1986 speed = irda_get_next_speed(skb);
1987 if ((speed != self->io.speed) && (speed != -1)) {
1988 /* Check for empty frame */
1989 if (!skb->len) {
1990 ali_ircc_change_speed(self, speed);
1991 dev->trans_start = jiffies;
1992 spin_unlock_irqrestore(&self->lock, flags);
1993 dev_kfree_skb(skb);
1994 return NETDEV_TX_OK;
1995 } else
1996 self->new_speed = speed;
1997 }
1998
1999 /* Init tx buffer */
2000 self->tx_buff.data = self->tx_buff.head;
2001
2002 /* Copy skb to tx_buff while wrapping, stuffing and making CRC */
2003 self->tx_buff.len = async_wrap_skb(skb, self->tx_buff.data,
2004 self->tx_buff.truesize);
2005
2006 self->netdev->stats.tx_bytes += self->tx_buff.len;
2007
2008 /* Turn on transmit finished interrupt. Will fire immediately! */
2009 outb(UART_IER_THRI, iobase+UART_IER);
2010
2011 dev->trans_start = jiffies;
2012 spin_unlock_irqrestore(&self->lock, flags);
2013
2014 dev_kfree_skb(skb);
2015
2016 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
2017
2018 return NETDEV_TX_OK;
2019 }
2020
2021
2022 /*
2023 * Function ali_ircc_net_ioctl (dev, rq, cmd)
2024 *
2025 * Process IOCTL commands for this device
2026 *
2027 */
2028 static int ali_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2029 {
2030 struct if_irda_req *irq = (struct if_irda_req *) rq;
2031 struct ali_ircc_cb *self;
2032 unsigned long flags;
2033 int ret = 0;
2034
2035 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ );
2036
2037 IRDA_ASSERT(dev != NULL, return -1;);
2038
2039 self = netdev_priv(dev);
2040
2041 IRDA_ASSERT(self != NULL, return -1;);
2042
2043 IRDA_DEBUG(2, "%s(), %s, (cmd=0x%X)\n", __func__ , dev->name, cmd);
2044
2045 switch (cmd) {
2046 case SIOCSBANDWIDTH: /* Set bandwidth */
2047 IRDA_DEBUG(1, "%s(), SIOCSBANDWIDTH\n", __func__ );
2048 /*
2049 * This function will also be used by IrLAP to change the
2050 * speed, so we still must allow for speed change within
2051 * interrupt context.
2052 */
2053 if (!in_interrupt() && !capable(CAP_NET_ADMIN))
2054 return -EPERM;
2055
2056 spin_lock_irqsave(&self->lock, flags);
2057 ali_ircc_change_speed(self, irq->ifr_baudrate);
2058 spin_unlock_irqrestore(&self->lock, flags);
2059 break;
2060 case SIOCSMEDIABUSY: /* Set media busy */
2061 IRDA_DEBUG(1, "%s(), SIOCSMEDIABUSY\n", __func__ );
2062 if (!capable(CAP_NET_ADMIN))
2063 return -EPERM;
2064 irda_device_set_media_busy(self->netdev, TRUE);
2065 break;
2066 case SIOCGRECEIVING: /* Check if we are receiving right now */
2067 IRDA_DEBUG(2, "%s(), SIOCGRECEIVING\n", __func__ );
2068 /* This is protected */
2069 irq->ifr_receiving = ali_ircc_is_receiving(self);
2070 break;
2071 default:
2072 ret = -EOPNOTSUPP;
2073 }
2074
2075 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
2076
2077 return ret;
2078 }
2079
2080 /*
2081 * Function ali_ircc_is_receiving (self)
2082 *
2083 * Return TRUE is we are currently receiving a frame
2084 *
2085 */
2086 static int ali_ircc_is_receiving(struct ali_ircc_cb *self)
2087 {
2088 unsigned long flags;
2089 int status = FALSE;
2090 int iobase;
2091
2092 IRDA_DEBUG(2, "%s(), ---------------- Start -----------------\n", __func__ );
2093
2094 IRDA_ASSERT(self != NULL, return FALSE;);
2095
2096 spin_lock_irqsave(&self->lock, flags);
2097
2098 if (self->io.speed > 115200)
2099 {
2100 iobase = self->io.fir_base;
2101
2102 switch_bank(iobase, BANK1);
2103 if((inb(iobase+FIR_FIFO_FR) & 0x3f) != 0)
2104 {
2105 /* We are receiving something */
2106 IRDA_DEBUG(1, "%s(), We are receiving something\n", __func__ );
2107 status = TRUE;
2108 }
2109 switch_bank(iobase, BANK0);
2110 }
2111 else
2112 {
2113 status = (self->rx_buff.state != OUTSIDE_FRAME);
2114 }
2115
2116 spin_unlock_irqrestore(&self->lock, flags);
2117
2118 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
2119
2120 return status;
2121 }
2122
2123 static int ali_ircc_suspend(struct platform_device *dev, pm_message_t state)
2124 {
2125 struct ali_ircc_cb *self = platform_get_drvdata(dev);
2126
2127 IRDA_MESSAGE("%s, Suspending\n", ALI_IRCC_DRIVER_NAME);
2128
2129 if (self->io.suspended)
2130 return 0;
2131
2132 ali_ircc_net_close(self->netdev);
2133
2134 self->io.suspended = 1;
2135
2136 return 0;
2137 }
2138
2139 static int ali_ircc_resume(struct platform_device *dev)
2140 {
2141 struct ali_ircc_cb *self = platform_get_drvdata(dev);
2142
2143 if (!self->io.suspended)
2144 return 0;
2145
2146 ali_ircc_net_open(self->netdev);
2147
2148 IRDA_MESSAGE("%s, Waking up\n", ALI_IRCC_DRIVER_NAME);
2149
2150 self->io.suspended = 0;
2151
2152 return 0;
2153 }
2154
2155 /* ALi Chip Function */
2156
2157 static void SetCOMInterrupts(struct ali_ircc_cb *self , unsigned char enable)
2158 {
2159
2160 unsigned char newMask;
2161
2162 int iobase = self->io.fir_base; /* or sir_base */
2163
2164 IRDA_DEBUG(2, "%s(), -------- Start -------- ( Enable = %d )\n", __func__ , enable);
2165
2166 /* Enable the interrupt which we wish to */
2167 if (enable){
2168 if (self->io.direction == IO_XMIT)
2169 {
2170 if (self->io.speed > 115200) /* FIR, MIR */
2171 {
2172 newMask = self->ier;
2173 }
2174 else /* SIR */
2175 {
2176 newMask = UART_IER_THRI | UART_IER_RDI;
2177 }
2178 }
2179 else {
2180 if (self->io.speed > 115200) /* FIR, MIR */
2181 {
2182 newMask = self->ier;
2183 }
2184 else /* SIR */
2185 {
2186 newMask = UART_IER_RDI;
2187 }
2188 }
2189 }
2190 else /* Disable all the interrupts */
2191 {
2192 newMask = 0x00;
2193
2194 }
2195
2196 //SIR and FIR has different registers
2197 if (self->io.speed > 115200)
2198 {
2199 switch_bank(iobase, BANK0);
2200 outb(newMask, iobase+FIR_IER);
2201 }
2202 else
2203 outb(newMask, iobase+UART_IER);
2204
2205 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
2206 }
2207
2208 static void SIR2FIR(int iobase)
2209 {
2210 //unsigned char tmp;
2211
2212 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ );
2213
2214 /* Already protected (change_speed() or setup()), no need to lock.
2215 * Jean II */
2216
2217 outb(0x28, iobase+UART_MCR);
2218 outb(0x68, iobase+UART_MCR);
2219 outb(0x88, iobase+UART_MCR);
2220
2221 outb(0x60, iobase+FIR_MCR); /* Master Reset */
2222 outb(0x20, iobase+FIR_MCR); /* Master Interrupt Enable */
2223
2224 //tmp = inb(iobase+FIR_LCR_B); /* SIP enable */
2225 //tmp |= 0x20;
2226 //outb(tmp, iobase+FIR_LCR_B);
2227
2228 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
2229 }
2230
2231 static void FIR2SIR(int iobase)
2232 {
2233 unsigned char val;
2234
2235 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ );
2236
2237 /* Already protected (change_speed() or setup()), no need to lock.
2238 * Jean II */
2239
2240 outb(0x20, iobase+FIR_MCR); /* IRQ to low */
2241 outb(0x00, iobase+UART_IER);
2242
2243 outb(0xA0, iobase+FIR_MCR); /* Don't set master reset */
2244 outb(0x00, iobase+UART_FCR);
2245 outb(0x07, iobase+UART_FCR);
2246
2247 val = inb(iobase+UART_RX);
2248 val = inb(iobase+UART_LSR);
2249 val = inb(iobase+UART_MSR);
2250
2251 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
2252 }
2253
2254 MODULE_AUTHOR("Benjamin Kong <benjamin_kong@ali.com.tw>");
2255 MODULE_DESCRIPTION("ALi FIR Controller Driver");
2256 MODULE_LICENSE("GPL");
2257 MODULE_ALIAS("platform:" ALI_IRCC_DRIVER_NAME);
2258
2259
2260 module_param_array(io, int, NULL, 0);
2261 MODULE_PARM_DESC(io, "Base I/O addresses");
2262 module_param_array(irq, int, NULL, 0);
2263 MODULE_PARM_DESC(irq, "IRQ lines");
2264 module_param_array(dma, int, NULL, 0);
2265 MODULE_PARM_DESC(dma, "DMA channels");
2266
2267 module_init(ali_ircc_init);
2268 module_exit(ali_ircc_cleanup);
Linux kernel - Deliverables
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