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IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
[net-next-2.6.git] / drivers / net / irda / ali-ircc.c
CommitLineData
1da177e4
LT		 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>
898b1d16 37#include <linux/platform_device.h>
1da177e4
LT		 38
39#include <asm/io.h>
40#include <asm/dma.h>
41#include <asm/byteorder.h>
42
1da177e4
LT		 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
898b1d16
SO		 52#define ALI_IRCC_DRIVER_NAME "ali-ircc"
53
54/* Power Management */
55static int ali_ircc_suspend(struct platform_device *dev, pm_message_t state);
56static int ali_ircc_resume(struct platform_device *dev);
57
58static 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 },
64};
1da177e4
LT		 65
66/* Module parameters */
67static int qos_mtt_bits = 0x07; /* 1 ms or more */
68
69/* Use BIOS settions by default, but user may supply module parameters */
70static unsigned int io[] = { ~0, ~0, ~0, ~0 };
71static unsigned int irq[] = { 0, 0, 0, 0 };
72static unsigned int dma[] = { 0, 0, 0, 0 };
73
74static int ali_ircc_probe_53(ali_chip_t *chip, chipio_t *info);
75static int ali_ircc_init_43(ali_chip_t *chip, chipio_t *info);
76static int ali_ircc_init_53(ali_chip_t *chip, chipio_t *info);
77
78/* These are the currently known ALi sourth-bridge chipsets, the only one difference
79 * is that M1543C doesn't support HP HDSL-3600
80 */
81static ali_chip_t chips[] =
82{
83 { "M1543", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x43, ali_ircc_probe_53, ali_ircc_init_43 },
84 { "M1535", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x53, ali_ircc_probe_53, ali_ircc_init_53 },
85 { "M1563", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x63, ali_ircc_probe_53, ali_ircc_init_53 },
86 { NULL }
87};
88
89/* Max 4 instances for now */
90static struct ali_ircc_cb *dev_self[] = { NULL, NULL, NULL, NULL };
91
92/* Dongle Types */
93static char *dongle_types[] = {
94 "TFDS6000",
95 "HP HSDL-3600",
96 "HP HSDL-1100",
97 "No dongle connected",
98};
99
100/* Some prototypes */
101static int ali_ircc_open(int i, chipio_t *info);
102
103static int ali_ircc_close(struct ali_ircc_cb *self);
104
105static int ali_ircc_setup(chipio_t *info);
106static int ali_ircc_is_receiving(struct ali_ircc_cb *self);
107static int ali_ircc_net_open(struct net_device *dev);
108static int ali_ircc_net_close(struct net_device *dev);
109static int ali_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
1da177e4 110static void ali_ircc_change_speed(struct ali_ircc_cb *self, __u32 baud);
1da177e4
LT		 111static struct net_device_stats *ali_ircc_net_get_stats(struct net_device *dev);
112
113/* SIR function */
114static int ali_ircc_sir_hard_xmit(struct sk_buff *skb, struct net_device *dev);
115static irqreturn_t ali_ircc_sir_interrupt(struct ali_ircc_cb *self);
116static void ali_ircc_sir_receive(struct ali_ircc_cb *self);
117static void ali_ircc_sir_write_wakeup(struct ali_ircc_cb *self);
118static int ali_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len);
119static void ali_ircc_sir_change_speed(struct ali_ircc_cb *priv, __u32 speed);
120
121/* FIR function */
122static int ali_ircc_fir_hard_xmit(struct sk_buff *skb, struct net_device *dev);
123static void ali_ircc_fir_change_speed(struct ali_ircc_cb *priv, __u32 speed);
124static irqreturn_t ali_ircc_fir_interrupt(struct ali_ircc_cb *self);
125static int ali_ircc_dma_receive(struct ali_ircc_cb *self);
126static int ali_ircc_dma_receive_complete(struct ali_ircc_cb *self);
127static int ali_ircc_dma_xmit_complete(struct ali_ircc_cb *self);
128static void ali_ircc_dma_xmit(struct ali_ircc_cb *self);
129
130/* My Function */
131static int ali_ircc_read_dongle_id (int i, chipio_t *info);
132static void ali_ircc_change_dongle_speed(struct ali_ircc_cb *priv, int speed);
133
134/* ALi chip function */
135static void SIR2FIR(int iobase);
136static void FIR2SIR(int iobase);
137static 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 */
145static int __init ali_ircc_init(void)
146{
147 ali_chip_t *chip;
148 chipio_t info;
9c6c6795 149 int ret;
1da177e4
LT		 150 int cfg, cfg_base;
151 int reg, revision;
152 int i = 0;
153
154 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__);
898b1d16
SO		 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
9c6c6795 163 ret = -ENODEV;
1da177e4
LT		 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", __FUNCTION__, 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", __FUNCTION__, 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", __FUNCTION__,
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", __FUNCTION__, chip->name, cfg_base);
226 }
227 /* Exit configuration */
228 outb(0xbb, cfg_base);
229 }
230 }
231
232 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __FUNCTION__);
898b1d16
SO		 233
234 if (ret)
235 platform_driver_unregister(&ali_ircc_driver);
236
1da177e4
LT		 237 return ret;
238}
239
240/*
241 * Function ali_ircc_cleanup ()
242 *
243 * Close all configured chips
244 *
245 */
246static void __exit ali_ircc_cleanup(void)
247{
248 int i;
249
250 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__);
1da177e4 251
9c3bd683 252 for (i=0; i < ARRAY_SIZE(dev_self); i++) {
1da177e4
LT		 253 if (dev_self[i])
254 ali_ircc_close(dev_self[i]);
255 }
256
898b1d16
SO		 257 platform_driver_unregister(&ali_ircc_driver);
258
1da177e4
LT		 259 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __FUNCTION__);
260}
261
262/*
263 * Function ali_ircc_open (int i, chipio_t *inf)
264 *
265 * Open driver instance
266 *
267 */
268static int ali_ircc_open(int i, chipio_t *info)
269{
270 struct net_device *dev;
271 struct ali_ircc_cb *self;
1da177e4
LT		 272 int dongle_id;
273 int err;
274
275 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__);
9c3bd683
BH		 276
277 if (i >= ARRAY_SIZE(dev_self)) {
278 IRDA_ERROR("%s(), maximum number of supported chips reached!\n",
279 __FUNCTION__);
280 return -ENOMEM;
281 }
1da177e4
LT		 282
283 /* Set FIR FIFO and DMA Threshold */
284 if ((ali_ircc_setup(info)) == -1)
285 return -1;
286
287 dev = alloc_irdadev(sizeof(*self));
288 if (dev == NULL) {
289 IRDA_ERROR("%s(), can't allocate memory for control block!\n",
290 __FUNCTION__);
291 return -ENOMEM;
292 }
293
294 self = dev->priv;
295 self->netdev = dev;
296 spin_lock_init(&self->lock);
297
298 /* Need to store self somewhere */
299 dev_self[i] = self;
300 self->index = i;
301
302 /* Initialize IO */
303 self->io.cfg_base = info->cfg_base; /* In ali_ircc_probe_53 assign */
304 self->io.fir_base = info->fir_base; /* info->sir_base = info->fir_base */
305 self->io.sir_base = info->sir_base; /* ALi SIR and FIR use the same address */
306 self->io.irq = info->irq;
307 self->io.fir_ext = CHIP_IO_EXTENT;
308 self->io.dma = info->dma;
309 self->io.fifo_size = 16; /* SIR: 16, FIR: 32 Benjamin 2000/11/1 */
310
311 /* Reserve the ioports that we need */
898b1d16
SO		 312 if (!request_region(self->io.fir_base, self->io.fir_ext,
313 ALI_IRCC_DRIVER_NAME)) {
1da177e4
LT		 314 IRDA_WARNING("%s(), can't get iobase of 0x%03x\n", __FUNCTION__,
315 self->io.fir_base);
316 err = -ENODEV;
317 goto err_out1;
318 }
319
320 /* Initialize QoS for this device */
321 irda_init_max_qos_capabilies(&self->qos);
322
323 /* The only value we must override it the baudrate */
324 self->qos.baud_rate.bits = IR_9600|IR_19200|IR_38400|IR_57600|
325 IR_115200|IR_576000|IR_1152000|(IR_4000000 << 8); // benjamin 2000/11/8 05:27PM
326
327 self->qos.min_turn_time.bits = qos_mtt_bits;
328
329 irda_qos_bits_to_value(&self->qos);
330
331 /* Max DMA buffer size needed = (data_size + 6) * (window_size) + 6; */
332 self->rx_buff.truesize = 14384;
333 self->tx_buff.truesize = 14384;
334
335 /* Allocate memory if needed */
336 self->rx_buff.head =
337 dma_alloc_coherent(NULL, self->rx_buff.truesize,
338 &self->rx_buff_dma, GFP_KERNEL);
339 if (self->rx_buff.head == NULL) {
340 err = -ENOMEM;
341 goto err_out2;
342 }
343 memset(self->rx_buff.head, 0, self->rx_buff.truesize);
344
345 self->tx_buff.head =
346 dma_alloc_coherent(NULL, self->tx_buff.truesize,
347 &self->tx_buff_dma, GFP_KERNEL);
348 if (self->tx_buff.head == NULL) {
349 err = -ENOMEM;
350 goto err_out3;
351 }
352 memset(self->tx_buff.head, 0, self->tx_buff.truesize);
353
354 self->rx_buff.in_frame = FALSE;
355 self->rx_buff.state = OUTSIDE_FRAME;
356 self->tx_buff.data = self->tx_buff.head;
357 self->rx_buff.data = self->rx_buff.head;
358
359 /* Reset Tx queue info */
360 self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0;
361 self->tx_fifo.tail = self->tx_buff.head;
362
363
364 /* Keep track of module usage */
365 SET_MODULE_OWNER(dev);
366
367 /* Override the network functions we need to use */
368 dev->hard_start_xmit = ali_ircc_sir_hard_xmit;
369 dev->open = ali_ircc_net_open;
370 dev->stop = ali_ircc_net_close;
371 dev->do_ioctl = ali_ircc_net_ioctl;
372 dev->get_stats = ali_ircc_net_get_stats;
373
374 err = register_netdev(dev);
375 if (err) {
376 IRDA_ERROR("%s(), register_netdev() failed!\n", __FUNCTION__);
377 goto err_out4;
378 }
379 IRDA_MESSAGE("IrDA: Registered device %s\n", dev->name);
380
381 /* Check dongle id */
382 dongle_id = ali_ircc_read_dongle_id(i, info);
898b1d16
SO		 383 IRDA_MESSAGE("%s(), %s, Found dongle: %s\n", __FUNCTION__,
384 ALI_IRCC_DRIVER_NAME, dongle_types[dongle_id]);
1da177e4
LT		 385
386 self->io.dongle_id = dongle_id;
1da177e4
LT		 387
388 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __FUNCTION__);
389
390 return 0;
391
392 err_out4:
393 dma_free_coherent(NULL, self->tx_buff.truesize,
394 self->tx_buff.head, self->tx_buff_dma);
395 err_out3:
396 dma_free_coherent(NULL, self->rx_buff.truesize,
397 self->rx_buff.head, self->rx_buff_dma);
398 err_out2:
399 release_region(self->io.fir_base, self->io.fir_ext);
400 err_out1:
401 dev_self[i] = NULL;
402 free_netdev(dev);
403 return err;
404}
405
406
407/*
408 * Function ali_ircc_close (self)
409 *
410 * Close driver instance
411 *
412 */
413static int __exit ali_ircc_close(struct ali_ircc_cb *self)
414{
415 int iobase;
416
417 IRDA_DEBUG(4, "%s(), ---------------- Start ----------------\n", __FUNCTION__);
418
419 IRDA_ASSERT(self != NULL, return -1;);
420
421 iobase = self->io.fir_base;
422
423 /* Remove netdevice */
424 unregister_netdev(self->netdev);
425
426 /* Release the PORT that this driver is using */
427 IRDA_DEBUG(4, "%s(), Releasing Region %03x\n", __FUNCTION__, self->io.fir_base);
428 release_region(self->io.fir_base, self->io.fir_ext);
429
430 if (self->tx_buff.head)
431 dma_free_coherent(NULL, self->tx_buff.truesize,
432 self->tx_buff.head, self->tx_buff_dma);
433
434 if (self->rx_buff.head)
435 dma_free_coherent(NULL, self->rx_buff.truesize,
436 self->rx_buff.head, self->rx_buff_dma);
437
438 dev_self[self->index] = NULL;
439 free_netdev(self->netdev);
440
441 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __FUNCTION__);
442
443 return 0;
444}
445
446/*
447 * Function ali_ircc_init_43 (chip, info)
448 *
449 * Initialize the ALi M1543 chip.
450 */
451static int ali_ircc_init_43(ali_chip_t *chip, chipio_t *info)
452{
453 /* All controller information like I/O address, DMA channel, IRQ
454 * are set by BIOS
455 */
456
457 return 0;
458}
459
460/*
461 * Function ali_ircc_init_53 (chip, info)
462 *
463 * Initialize the ALi M1535 chip.
464 */
465static int ali_ircc_init_53(ali_chip_t *chip, chipio_t *info)
466{
467 /* All controller information like I/O address, DMA channel, IRQ
468 * are set by BIOS
469 */
470
471 return 0;
472}
473
474/*
475 * Function ali_ircc_probe_53 (chip, info)
476 *
477 * Probes for the ALi M1535D or M1535
478 */
479static int ali_ircc_probe_53(ali_chip_t *chip, chipio_t *info)
480{
481 int cfg_base = info->cfg_base;
482 int hi, low, reg;
483
484 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__);
485
486 /* Enter Configuration */
487 outb(chip->entr1, cfg_base);
488 outb(chip->entr2, cfg_base);
489
490 /* Select Logical Device 5 Registers (UART2) */
491 outb(0x07, cfg_base);
492 outb(0x05, cfg_base+1);
493
494 /* Read address control register */
495 outb(0x60, cfg_base);
496 hi = inb(cfg_base+1);
497 outb(0x61, cfg_base);
498 low = inb(cfg_base+1);
499 info->fir_base = (hi<<8) + low;
500
501 info->sir_base = info->fir_base;
502
503 IRDA_DEBUG(2, "%s(), probing fir_base=0x%03x\n", __FUNCTION__, info->fir_base);
504
505 /* Read IRQ control register */
506 outb(0x70, cfg_base);
507 reg = inb(cfg_base+1);
508 info->irq = reg & 0x0f;
509 IRDA_DEBUG(2, "%s(), probing irq=%d\n", __FUNCTION__, info->irq);
510
511 /* Read DMA channel */
512 outb(0x74, cfg_base);
513 reg = inb(cfg_base+1);
514 info->dma = reg & 0x07;
515
516 if(info->dma == 0x04)
517 IRDA_WARNING("%s(), No DMA channel assigned !\n", __FUNCTION__);
518 else
519 IRDA_DEBUG(2, "%s(), probing dma=%d\n", __FUNCTION__, info->dma);
520
521 /* Read Enabled Status */
522 outb(0x30, cfg_base);
523 reg = inb(cfg_base+1);
524 info->enabled = (reg & 0x80) && (reg & 0x01);
525 IRDA_DEBUG(2, "%s(), probing enabled=%d\n", __FUNCTION__, info->enabled);
526
527 /* Read Power Status */
528 outb(0x22, cfg_base);
529 reg = inb(cfg_base+1);
530 info->suspended = (reg & 0x20);
531 IRDA_DEBUG(2, "%s(), probing suspended=%d\n", __FUNCTION__, info->suspended);
532
533 /* Exit configuration */
534 outb(0xbb, cfg_base);
535
536 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __FUNCTION__);
537
538 return 0;
539}
540
541/*
542 * Function ali_ircc_setup (info)
543 *
544 * Set FIR FIFO and DMA Threshold
545 * Returns non-negative on success.
546 *
547 */
548static int ali_ircc_setup(chipio_t *info)
549{
550 unsigned char tmp;
551 int version;
552 int iobase = info->fir_base;
553
554 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__);
555
556 /* Locking comments :
557 * Most operations here need to be protected. We are called before
558 * the device instance is created in ali_ircc_open(), therefore
559 * nobody can bother us - Jean II */
560
561 /* Switch to FIR space */
562 SIR2FIR(iobase);
563
564 /* Master Reset */
565 outb(0x40, iobase+FIR_MCR); // benjamin 2000/11/30 11:45AM
566
567 /* Read FIR ID Version Register */
568 switch_bank(iobase, BANK3);
569 version = inb(iobase+FIR_ID_VR);
570
571 /* Should be 0x00 in the M1535/M1535D */
572 if(version != 0x00)
573 {
898b1d16
SO		 574 IRDA_ERROR("%s, Wrong chip version %02x\n",
575 ALI_IRCC_DRIVER_NAME, version);
1da177e4
LT		 576 return -1;
577 }
578
1da177e4
LT		 579 /* Set FIR FIFO Threshold Register */
580 switch_bank(iobase, BANK1);
581 outb(RX_FIFO_Threshold, iobase+FIR_FIFO_TR);
582
583 /* Set FIR DMA Threshold Register */
584 outb(RX_DMA_Threshold, iobase+FIR_DMA_TR);
585
586 /* CRC enable */
587 switch_bank(iobase, BANK2);
588 outb(inb(iobase+FIR_IRDA_CR) | IRDA_CR_CRC, iobase+FIR_IRDA_CR);
589
590 /* NDIS driver set TX Length here BANK2 Alias 3, Alias4*/
591
592 /* Switch to Bank 0 */
593 switch_bank(iobase, BANK0);
594
595 tmp = inb(iobase+FIR_LCR_B);
596 tmp &=~0x20; // disable SIP
597 tmp |= 0x80; // these two steps make RX mode
598 tmp &= 0xbf;
599 outb(tmp, iobase+FIR_LCR_B);
600
601 /* Disable Interrupt */
602 outb(0x00, iobase+FIR_IER);
603
604
605 /* Switch to SIR space */
606 FIR2SIR(iobase);
607
898b1d16
SO		 608 IRDA_MESSAGE("%s, driver loaded (Benjamin Kong)\n",
609 ALI_IRCC_DRIVER_NAME);
1da177e4
LT		 610
611 /* Enable receive interrupts */
612 // outb(UART_IER_RDI, iobase+UART_IER); //benjamin 2000/11/23 01:25PM
613 // Turn on the interrupts in ali_ircc_net_open
614
615 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__);
616
617 return 0;
618}
619
620/*
621 * Function ali_ircc_read_dongle_id (int index, info)
622 *
623 * Try to read dongle indentification. This procedure needs to be executed
624 * once after power-on/reset. It also needs to be used whenever you suspect
625 * that the user may have plugged/unplugged the IrDA Dongle.
626 */
627static int ali_ircc_read_dongle_id (int i, chipio_t *info)
628{
629 int dongle_id, reg;
630 int cfg_base = info->cfg_base;
631
632 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__);
633
634 /* Enter Configuration */
635 outb(chips[i].entr1, cfg_base);
636 outb(chips[i].entr2, cfg_base);
637
638 /* Select Logical Device 5 Registers (UART2) */
639 outb(0x07, cfg_base);
640 outb(0x05, cfg_base+1);
641
642 /* Read Dongle ID */
643 outb(0xf0, cfg_base);
644 reg = inb(cfg_base+1);
645 dongle_id = ((reg>>6)&0x02) | ((reg>>5)&0x01);
646 IRDA_DEBUG(2, "%s(), probing dongle_id=%d, dongle_types=%s\n", __FUNCTION__,
647 dongle_id, dongle_types[dongle_id]);
648
649 /* Exit configuration */
650 outb(0xbb, cfg_base);
651
652 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__);
653
654 return dongle_id;
655}
656
657/*
658 * Function ali_ircc_interrupt (irq, dev_id, regs)
659 *
660 * An interrupt from the chip has arrived. Time to do some work
661 *
662 */
7d12e780 663static irqreturn_t ali_ircc_interrupt(int irq, void *dev_id)
1da177e4
LT		 664{
665 struct net_device *dev = (struct net_device *) dev_id;
666 struct ali_ircc_cb *self;
667 int ret;
668
669 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__);
670
671 if (!dev) {
898b1d16
SO		 672 IRDA_WARNING("%s: irq %d for unknown device.\n",
673 ALI_IRCC_DRIVER_NAME, irq);
1da177e4
LT		 674 return IRQ_NONE;
675 }
676
677 self = (struct ali_ircc_cb *) dev->priv;
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", __FUNCTION__);
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 */
698static 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", __FUNCTION__);
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", __FUNCTION__,self->InterruptID);
717 IRDA_DEBUG(1, "%s(), self->LineStatus = %x\n", __FUNCTION__,self->LineStatus);
718 IRDA_DEBUG(1, "%s(), self->ier = %x\n", __FUNCTION__,self->ier);
719 IRDA_DEBUG(1, "%s(), eir = %x\n", __FUNCTION__,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", __FUNCTION__);
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", __FUNCTION__);
750
751 if(OldMessageCount > ((self->LineStatus+1) & 0x07))
752 {
753 self->rcvFramesOverflow = TRUE;
754 IRDA_DEBUG(1, "%s(), ******* self->rcvFramesOverflow = TRUE ******** \n", __FUNCTION__);
755 }
756
757 if (ali_ircc_dma_receive_complete(self))
758 {
759 IRDA_DEBUG(1, "%s(), ******* receive complete ******** \n", __FUNCTION__);
760
761 self->ier = IER_EOM;
762 }
763 else
764 {
765 IRDA_DEBUG(1, "%s(), ******* Not receive complete ******** \n", __FUNCTION__);
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", __FUNCTION__);
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", __FUNCTION__);
811 return IRQ_RETVAL(eir);
812}
813
814/*
815 * Function ali_ircc_sir_interrupt (irq, self, eir)
816 *
817 * Handle SIR interrupt
818 *
819 */
820static 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", __FUNCTION__);
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", __FUNCTION__,
835 iir, lsr, iobase);
836
837 switch (iir)
838 {
839 case UART_IIR_RLSI:
840 IRDA_DEBUG(2, "%s(), RLSI\n", __FUNCTION__);
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", __FUNCTION__, iir);
855 break;
856 }
857
858 }
859
860
861 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__);
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 */
873static 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", __FUNCTION__);
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->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", __FUNCTION__);
894 break;
895 }
896 } while (inb(iobase+UART_LSR) & UART_LSR_DR);
897
898 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
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 */
908static 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", __FUNCTION__ );
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", __FUNCTION__ );
935
936 IRDA_DEBUG(1, "%s(), Changing speed! self->new_speed = %d\n", __FUNCTION__ , 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", __FUNCTION__ );
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->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", __FUNCTION__ );
962}
963
964static 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", __FUNCTION__ );
970
971 IRDA_DEBUG(2, "%s(), setting speed = %d \n", __FUNCTION__ , 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->hard_start_xmit = ali_ircc_fir_hard_xmit;
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->hard_start_xmit = ali_ircc_sir_hard_xmit;
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", __FUNCTION__ );
1011}
1012
1013static 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", __FUNCTION__ );
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", __FUNCTION__ ,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", __FUNCTION__ );
1042}
1043
1044/*
1045 * Function ali_sir_change_speed (self, speed)
1046 *
1047 * Set speed of IrDA port to specified baudrate
1048 *
1049 */
1050static 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", __FUNCTION__ );
1060
1061 IRDA_DEBUG(1, "%s(), Setting speed to: %d\n", __FUNCTION__ , 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", __FUNCTION__ );
1116}
1117
1118static 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", __FUNCTION__ );
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", __FUNCTION__ , 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", __FUNCTION__ );
1297}
1298
1299/*
1300 * Function ali_ircc_sir_write (driver)
1301 *
1302 * Fill Tx FIFO with transmit data
1303 *
1304 */
1305static 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", __FUNCTION__ );
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", __FUNCTION__ );
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", __FUNCTION__ );
1326 return actual;
1327}
1328
1329/*
1330 * Function ali_ircc_net_open (dev)
1331 *
1332 * Start the device
1333 *
1334 */
1335static 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", __FUNCTION__ );
1342
1343 IRDA_ASSERT(dev != NULL, return -1;);
1344
1345 self = (struct ali_ircc_cb *) dev->priv;
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 {
898b1d16
SO		 1354 IRDA_WARNING("%s, unable to allocate irq=%d\n",
1355 ALI_IRCC_DRIVER_NAME,
1da177e4
LT		 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)) {
898b1d16
SO		 1365 IRDA_WARNING("%s, unable to allocate dma=%d\n",
1366 ALI_IRCC_DRIVER_NAME,
1da177e4
LT		 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", __FUNCTION__ );
1388
1389 return 0;
1390}
1391
1392/*
1393 * Function ali_ircc_net_close (dev)
1394 *
1395 * Stop the device
1396 *
1397 */
1398static 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", __FUNCTION__ );
1405
1406 IRDA_ASSERT(dev != NULL, return -1;);
1407
1408 self = (struct ali_ircc_cb *) dev->priv;
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", __FUNCTION__ );
1428
1429 return 0;
1430}
1431
1432/*
1433 * Function ali_ircc_fir_hard_xmit (skb, dev)
1434 *
1435 * Transmit the frame
1436 *
1437 */
1438static 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", __FUNCTION__ );
1447
1448 self = (struct ali_ircc_cb *) dev->priv;
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 0;
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 self->stats.tx_bytes += skb->len;
1480
1481 memcpy(self->tx_fifo.queue[self->tx_fifo.free].start, skb->data,
1482 skb->len);
1483
1484 self->tx_fifo.len++;
1485 self->tx_fifo.free++;
1486
1487 /* Start transmit only if there is currently no transmit going on */
1488 if (self->tx_fifo.len == 1)
1489 {
1490 /* Check if we must wait the min turn time or not */
1491 mtt = irda_get_mtt(skb);
1492
1493 if (mtt)
1494 {
1495 /* Check how much time we have used already */
1496 do_gettimeofday(&self->now);
1497
1498 diff = self->now.tv_usec - self->stamp.tv_usec;
1499 /* self->stamp is set from ali_ircc_dma_receive_complete() */
1500
1501 IRDA_DEBUG(1, "%s(), ******* diff = %d ******* \n", __FUNCTION__ , diff);
1502
1503 if (diff < 0)
1504 diff += 1000000;
1505
1506 /* Check if the mtt is larger than the time we have
1507 * already used by all the protocol processing
1508 */
1509 if (mtt > diff)
1510 {
1511 mtt -= diff;
1512
1513 /*
1514 * Use timer if delay larger than 1000 us, and
1515 * use udelay for smaller values which should
1516 * be acceptable
1517 */
1518 if (mtt > 500)
1519 {
1520 /* Adjust for timer resolution */
1521 mtt = (mtt+250) / 500; /* 4 discard, 5 get advanced, Let's round off */
1522
1523 IRDA_DEBUG(1, "%s(), ************** mtt = %d ***********\n", __FUNCTION__ , mtt);
1524
1525 /* Setup timer */
1526 if (mtt == 1) /* 500 us */
1527 {
1528 switch_bank(iobase, BANK1);
1529 outb(TIMER_IIR_500, iobase+FIR_TIMER_IIR);
1530 }
1531 else if (mtt == 2) /* 1 ms */
1532 {
1533 switch_bank(iobase, BANK1);
1534 outb(TIMER_IIR_1ms, iobase+FIR_TIMER_IIR);
1535 }
1536 else /* > 2ms -> 4ms */
1537 {
1538 switch_bank(iobase, BANK1);
1539 outb(TIMER_IIR_2ms, iobase+FIR_TIMER_IIR);
1540 }
1541
1542
1543 /* Start timer */
1544 outb(inb(iobase+FIR_CR) | CR_TIMER_EN, iobase+FIR_CR);
1545 self->io.direction = IO_XMIT;
1546
1547 /* Enable timer interrupt */
1548 self->ier = IER_TIMER;
1549 SetCOMInterrupts(self, TRUE);
1550
1551 /* Timer will take care of the rest */
1552 goto out;
1553 }
1554 else
1555 udelay(mtt);
1556 } // if (if (mtt > diff)
1557 }// if (mtt)
1558
1559 /* Enable EOM interrupt */
1560 self->ier = IER_EOM;
1561 SetCOMInterrupts(self, TRUE);
1562
1563 /* Transmit frame */
1564 ali_ircc_dma_xmit(self);
1565 } // if (self->tx_fifo.len == 1)
1566
1567 out:
1568
1569 /* Not busy transmitting anymore if window is not full */
1570 if (self->tx_fifo.free < MAX_TX_WINDOW)
1571 netif_wake_queue(self->netdev);
1572
1573 /* Restore bank register */
1574 switch_bank(iobase, BANK0);
1575
1576 dev->trans_start = jiffies;
1577 spin_unlock_irqrestore(&self->lock, flags);
1578 dev_kfree_skb(skb);
1579
1580 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
1581 return 0;
1582}
1583
1584
1585static void ali_ircc_dma_xmit(struct ali_ircc_cb *self)
1586{
1587 int iobase, tmp;
1588 unsigned char FIFO_OPTI, Hi, Lo;
1589
1590
1591 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __FUNCTION__ );
1592
1593 iobase = self->io.fir_base;
1594
1595 /* FIFO threshold , this method comes from NDIS5 code */
1596
1597 if(self->tx_fifo.queue[self->tx_fifo.ptr].len < TX_FIFO_Threshold)
1598 FIFO_OPTI = self->tx_fifo.queue[self->tx_fifo.ptr].len-1;
1599 else
1600 FIFO_OPTI = TX_FIFO_Threshold;
1601
1602 /* Disable DMA */
1603 switch_bank(iobase, BANK1);
1604 outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR);
1605
1606 self->io.direction = IO_XMIT;
1607
1608 irda_setup_dma(self->io.dma,
1609 ((u8 *)self->tx_fifo.queue[self->tx_fifo.ptr].start -
1610 self->tx_buff.head) + self->tx_buff_dma,
1611 self->tx_fifo.queue[self->tx_fifo.ptr].len,
1612 DMA_TX_MODE);
1613
1614 /* Reset Tx FIFO */
1615 switch_bank(iobase, BANK0);
1616 outb(LCR_A_FIFO_RESET, iobase+FIR_LCR_A);
1617
1618 /* Set Tx FIFO threshold */
1619 if (self->fifo_opti_buf!=FIFO_OPTI)
1620 {
1621 switch_bank(iobase, BANK1);
1622 outb(FIFO_OPTI, iobase+FIR_FIFO_TR) ;
1623 self->fifo_opti_buf=FIFO_OPTI;
1624 }
1625
1626 /* Set Tx DMA threshold */
1627 switch_bank(iobase, BANK1);
1628 outb(TX_DMA_Threshold, iobase+FIR_DMA_TR);
1629
1630 /* Set max Tx frame size */
1631 Hi = (self->tx_fifo.queue[self->tx_fifo.ptr].len >> 8) & 0x0f;
1632 Lo = self->tx_fifo.queue[self->tx_fifo.ptr].len & 0xff;
1633 switch_bank(iobase, BANK2);
1634 outb(Hi, iobase+FIR_TX_DSR_HI);
1635 outb(Lo, iobase+FIR_TX_DSR_LO);
1636
1637 /* Disable SIP , Disable Brick Wall (we don't support in TX mode), Change to TX mode */
1638 switch_bank(iobase, BANK0);
1639 tmp = inb(iobase+FIR_LCR_B);
1640 tmp &= ~0x20; // Disable SIP
1641 outb(((unsigned char)(tmp & 0x3f) | LCR_B_TX_MODE) & ~LCR_B_BW, iobase+FIR_LCR_B);
1642 IRDA_DEBUG(1, "%s(), ******* Change to TX mode: FIR_LCR_B = 0x%x ******* \n", __FUNCTION__ , inb(iobase+FIR_LCR_B));
1643
1644 outb(0, iobase+FIR_LSR);
1645
1646 /* Enable DMA and Burst Mode */
1647 switch_bank(iobase, BANK1);
1648 outb(inb(iobase+FIR_CR) | CR_DMA_EN | CR_DMA_BURST, iobase+FIR_CR);
1649
1650 switch_bank(iobase, BANK0);
1651
1652 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
1653}
1654
1655static int ali_ircc_dma_xmit_complete(struct ali_ircc_cb *self)
1656{
1657 int iobase;
1658 int ret = TRUE;
1659
1660 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __FUNCTION__ );
1661
1662 iobase = self->io.fir_base;
1663
1664 /* Disable DMA */
1665 switch_bank(iobase, BANK1);
1666 outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR);
1667
1668 /* Check for underrun! */
1669 switch_bank(iobase, BANK0);
1670 if((inb(iobase+FIR_LSR) & LSR_FRAME_ABORT) == LSR_FRAME_ABORT)
1671
1672 {
1673 IRDA_ERROR("%s(), ********* LSR_FRAME_ABORT *********\n", __FUNCTION__);
1674 self->stats.tx_errors++;
1675 self->stats.tx_fifo_errors++;
1676 }
1677 else
1678 {
1679 self->stats.tx_packets++;
1680 }
1681
1682 /* Check if we need to change the speed */
1683 if (self->new_speed)
1684 {
1685 ali_ircc_change_speed(self, self->new_speed);
1686 self->new_speed = 0;
1687 }
1688
1689 /* Finished with this frame, so prepare for next */
1690 self->tx_fifo.ptr++;
1691 self->tx_fifo.len--;
1692
1693 /* Any frames to be sent back-to-back? */
1694 if (self->tx_fifo.len)
1695 {
1696 ali_ircc_dma_xmit(self);
1697
1698 /* Not finished yet! */
1699 ret = FALSE;
1700 }
1701 else
1702 { /* Reset Tx FIFO info */
1703 self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0;
1704 self->tx_fifo.tail = self->tx_buff.head;
1705 }
1706
1707 /* Make sure we have room for more frames */
1708 if (self->tx_fifo.free < MAX_TX_WINDOW) {
1709 /* Not busy transmitting anymore */
1710 /* Tell the network layer, that we can accept more frames */
1711 netif_wake_queue(self->netdev);
1712 }
1713
1714 switch_bank(iobase, BANK0);
1715
1716 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
1717 return ret;
1718}
1719
1720/*
1721 * Function ali_ircc_dma_receive (self)
1722 *
1723 * Get ready for receiving a frame. The device will initiate a DMA
1724 * if it starts to receive a frame.
1725 *
1726 */
1727static int ali_ircc_dma_receive(struct ali_ircc_cb *self)
1728{
1729 int iobase, tmp;
1730
1731 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __FUNCTION__ );
1732
1733 iobase = self->io.fir_base;
1734
1735 /* Reset Tx FIFO info */
1736 self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0;
1737 self->tx_fifo.tail = self->tx_buff.head;
1738
1739 /* Disable DMA */
1740 switch_bank(iobase, BANK1);
1741 outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR);
1742
1743 /* Reset Message Count */
1744 switch_bank(iobase, BANK0);
1745 outb(0x07, iobase+FIR_LSR);
1746
1747 self->rcvFramesOverflow = FALSE;
1748
1749 self->LineStatus = inb(iobase+FIR_LSR) ;
1750
1751 /* Reset Rx FIFO info */
1752 self->io.direction = IO_RECV;
1753 self->rx_buff.data = self->rx_buff.head;
1754
1755 /* Reset Rx FIFO */
1756 // switch_bank(iobase, BANK0);
1757 outb(LCR_A_FIFO_RESET, iobase+FIR_LCR_A);
1758
1759 self->st_fifo.len = self->st_fifo.pending_bytes = 0;
1760 self->st_fifo.tail = self->st_fifo.head = 0;
1761
1762 irda_setup_dma(self->io.dma, self->rx_buff_dma, self->rx_buff.truesize,
1763 DMA_RX_MODE);
1764
1765 /* Set Receive Mode,Brick Wall */
1766 //switch_bank(iobase, BANK0);
1767 tmp = inb(iobase+FIR_LCR_B);
1768 outb((unsigned char)(tmp &0x3f) | LCR_B_RX_MODE | LCR_B_BW , iobase + FIR_LCR_B); // 2000/12/1 05:16PM
1769 IRDA_DEBUG(1, "%s(), *** Change To RX mode: FIR_LCR_B = 0x%x *** \n", __FUNCTION__ , inb(iobase+FIR_LCR_B));
1770
1771 /* Set Rx Threshold */
1772 switch_bank(iobase, BANK1);
1773 outb(RX_FIFO_Threshold, iobase+FIR_FIFO_TR);
1774 outb(RX_DMA_Threshold, iobase+FIR_DMA_TR);
1775
1776 /* Enable DMA and Burst Mode */
1777 // switch_bank(iobase, BANK1);
1778 outb(CR_DMA_EN | CR_DMA_BURST, iobase+FIR_CR);
1779
1780 switch_bank(iobase, BANK0);
1781 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
1782 return 0;
1783}
1784
1785static int ali_ircc_dma_receive_complete(struct ali_ircc_cb *self)
1786{
1787 struct st_fifo *st_fifo;
1788 struct sk_buff *skb;
1789 __u8 status, MessageCount;
1790 int len, i, iobase, val;
1791
1792 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __FUNCTION__ );
1793
1794 st_fifo = &self->st_fifo;
1795 iobase = self->io.fir_base;
1796
1797 switch_bank(iobase, BANK0);
1798 MessageCount = inb(iobase+ FIR_LSR)&0x07;
1799
1800 if (MessageCount > 0)
1801 IRDA_DEBUG(0, "%s(), Messsage count = %d,\n", __FUNCTION__ , MessageCount);
1802
1803 for (i=0; i<=MessageCount; i++)
1804 {
1805 /* Bank 0 */
1806 switch_bank(iobase, BANK0);
1807 status = inb(iobase+FIR_LSR);
1808
1809 switch_bank(iobase, BANK2);
1810 len = inb(iobase+FIR_RX_DSR_HI) & 0x0f;
1811 len = len << 8;
1812 len |= inb(iobase+FIR_RX_DSR_LO);
1813
1814 IRDA_DEBUG(1, "%s(), RX Length = 0x%.2x,\n", __FUNCTION__ , len);
1815 IRDA_DEBUG(1, "%s(), RX Status = 0x%.2x,\n", __FUNCTION__ , status);
1816
1817 if (st_fifo->tail >= MAX_RX_WINDOW) {
1818 IRDA_DEBUG(0, "%s(), window is full!\n", __FUNCTION__ );
1819 continue;
1820 }
1821
1822 st_fifo->entries[st_fifo->tail].status = status;
1823 st_fifo->entries[st_fifo->tail].len = len;
1824 st_fifo->pending_bytes += len;
1825 st_fifo->tail++;
1826 st_fifo->len++;
1827 }
1828
1829 for (i=0; i<=MessageCount; i++)
1830 {
1831 /* Get first entry */
1832 status = st_fifo->entries[st_fifo->head].status;
1833 len = st_fifo->entries[st_fifo->head].len;
1834 st_fifo->pending_bytes -= len;
1835 st_fifo->head++;
1836 st_fifo->len--;
1837
1838 /* Check for errors */
1839 if ((status & 0xd8) || self->rcvFramesOverflow || (len==0))
1840 {
1841 IRDA_DEBUG(0,"%s(), ************* RX Errors ************ \n", __FUNCTION__ );
1842
1843 /* Skip frame */
1844 self->stats.rx_errors++;
1845
1846 self->rx_buff.data += len;
1847
1848 if (status & LSR_FIFO_UR)
1849 {
1850 self->stats.rx_frame_errors++;
1851 IRDA_DEBUG(0,"%s(), ************* FIFO Errors ************ \n", __FUNCTION__ );
1852 }
1853 if (status & LSR_FRAME_ERROR)
1854 {
1855 self->stats.rx_frame_errors++;
1856 IRDA_DEBUG(0,"%s(), ************* FRAME Errors ************ \n", __FUNCTION__ );
1857 }
1858
1859 if (status & LSR_CRC_ERROR)
1860 {
1861 self->stats.rx_crc_errors++;
1862 IRDA_DEBUG(0,"%s(), ************* CRC Errors ************ \n", __FUNCTION__ );
1863 }
1864
1865 if(self->rcvFramesOverflow)
1866 {
1867 self->stats.rx_frame_errors++;
1868 IRDA_DEBUG(0,"%s(), ************* Overran DMA buffer ************ \n", __FUNCTION__ );
1869 }
1870 if(len == 0)
1871 {
1872 self->stats.rx_frame_errors++;
1873 IRDA_DEBUG(0,"%s(), ********** Receive Frame Size = 0 ********* \n", __FUNCTION__ );
1874 }
1875 }
1876 else
1877 {
1878
1879 if (st_fifo->pending_bytes < 32)
1880 {
1881 switch_bank(iobase, BANK0);
1882 val = inb(iobase+FIR_BSR);
1883 if ((val& BSR_FIFO_NOT_EMPTY)== 0x80)
1884 {
1885 IRDA_DEBUG(0, "%s(), ************* BSR_FIFO_NOT_EMPTY ************ \n", __FUNCTION__ );
1886
1887 /* Put this entry back in fifo */
1888 st_fifo->head--;
1889 st_fifo->len++;
1890 st_fifo->pending_bytes += len;
1891 st_fifo->entries[st_fifo->head].status = status;
1892 st_fifo->entries[st_fifo->head].len = len;
1893
1894 /*
1895 * DMA not finished yet, so try again
1896 * later, set timer value, resolution
1897 * 500 us
1898 */
1899
1900 switch_bank(iobase, BANK1);
1901 outb(TIMER_IIR_500, iobase+FIR_TIMER_IIR); // 2001/1/2 05:07PM
1902
1903 /* Enable Timer */
1904 outb(inb(iobase+FIR_CR) | CR_TIMER_EN, iobase+FIR_CR);
1905
1906 return FALSE; /* I'll be back! */
1907 }
1908 }
1909
1910 /*
1911 * Remember the time we received this frame, so we can
1912 * reduce the min turn time a bit since we will know
1913 * how much time we have used for protocol processing
1914 */
1915 do_gettimeofday(&self->stamp);
1916
1917 skb = dev_alloc_skb(len+1);
1918 if (skb == NULL)
1919 {
1920 IRDA_WARNING("%s(), memory squeeze, "
1921 "dropping frame.\n",
1922 __FUNCTION__);
1923 self->stats.rx_dropped++;
1924
1925 return FALSE;
1926 }
1927
1928 /* Make sure IP header gets aligned */
1929 skb_reserve(skb, 1);
1930
1931 /* Copy frame without CRC, CRC is removed by hardware*/
1932 skb_put(skb, len);
1933 memcpy(skb->data, self->rx_buff.data, len);
1934
1935 /* Move to next frame */
1936 self->rx_buff.data += len;
1937 self->stats.rx_bytes += len;
1938 self->stats.rx_packets++;
1939
1940 skb->dev = self->netdev;
1941 skb->mac.raw = skb->data;
1942 skb->protocol = htons(ETH_P_IRDA);
1943 netif_rx(skb);
1944 self->netdev->last_rx = jiffies;
1945 }
1946 }
1947
1948 switch_bank(iobase, BANK0);
1949
1950 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
1951 return TRUE;
1952}
1953
1954
1955
1956/*
1957 * Function ali_ircc_sir_hard_xmit (skb, dev)
1958 *
1959 * Transmit the frame!
1960 *
1961 */
1962static int ali_ircc_sir_hard_xmit(struct sk_buff *skb, struct net_device *dev)
1963{
1964 struct ali_ircc_cb *self;
1965 unsigned long flags;
1966 int iobase;
1967 __u32 speed;
1968
1969 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__ );
1970
1971 IRDA_ASSERT(dev != NULL, return 0;);
1972
1973 self = (struct ali_ircc_cb *) dev->priv;
1974 IRDA_ASSERT(self != NULL, return 0;);
1975
1976 iobase = self->io.sir_base;
1977
1978 netif_stop_queue(dev);
1979
1980 /* Make sure tests *& speed change are atomic */
1981 spin_lock_irqsave(&self->lock, flags);
1982
1983 /* Note : you should make sure that speed changes are not going
1984 * to corrupt any outgoing frame. Look at nsc-ircc for the gory
1985 * details - Jean II */
1986
1987 /* Check if we need to change the speed */
1988 speed = irda_get_next_speed(skb);
1989 if ((speed != self->io.speed) && (speed != -1)) {
1990 /* Check for empty frame */
1991 if (!skb->len) {
1992 ali_ircc_change_speed(self, speed);
1993 dev->trans_start = jiffies;
1994 spin_unlock_irqrestore(&self->lock, flags);
1995 dev_kfree_skb(skb);
1996 return 0;
1997 } else
1998 self->new_speed = speed;
1999 }
2000
2001 /* Init tx buffer */
2002 self->tx_buff.data = self->tx_buff.head;
2003
2004 /* Copy skb to tx_buff while wrapping, stuffing and making CRC */
2005 self->tx_buff.len = async_wrap_skb(skb, self->tx_buff.data,
2006 self->tx_buff.truesize);
2007
2008 self->stats.tx_bytes += self->tx_buff.len;
2009
2010 /* Turn on transmit finished interrupt. Will fire immediately! */
2011 outb(UART_IER_THRI, iobase+UART_IER);
2012
2013 dev->trans_start = jiffies;
2014 spin_unlock_irqrestore(&self->lock, flags);
2015
2016 dev_kfree_skb(skb);
2017
2018 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
2019
2020 return 0;
2021}
2022
2023
2024/*
2025 * Function ali_ircc_net_ioctl (dev, rq, cmd)
2026 *
2027 * Process IOCTL commands for this device
2028 *
2029 */
2030static int ali_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2031{
2032 struct if_irda_req *irq = (struct if_irda_req *) rq;
2033 struct ali_ircc_cb *self;
2034 unsigned long flags;
2035 int ret = 0;
2036
2037 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__ );
2038
2039 IRDA_ASSERT(dev != NULL, return -1;);
2040
2041 self = dev->priv;
2042
2043 IRDA_ASSERT(self != NULL, return -1;);
2044
2045 IRDA_DEBUG(2, "%s(), %s, (cmd=0x%X)\n", __FUNCTION__ , dev->name, cmd);
2046
2047 switch (cmd) {
2048 case SIOCSBANDWIDTH: /* Set bandwidth */
2049 IRDA_DEBUG(1, "%s(), SIOCSBANDWIDTH\n", __FUNCTION__ );
2050 /*
2051 * This function will also be used by IrLAP to change the
2052 * speed, so we still must allow for speed change within
2053 * interrupt context.
2054 */
2055 if (!in_interrupt() && !capable(CAP_NET_ADMIN))
2056 return -EPERM;
2057
2058 spin_lock_irqsave(&self->lock, flags);
2059 ali_ircc_change_speed(self, irq->ifr_baudrate);
2060 spin_unlock_irqrestore(&self->lock, flags);
2061 break;
2062 case SIOCSMEDIABUSY: /* Set media busy */
2063 IRDA_DEBUG(1, "%s(), SIOCSMEDIABUSY\n", __FUNCTION__ );
2064 if (!capable(CAP_NET_ADMIN))
2065 return -EPERM;
2066 irda_device_set_media_busy(self->netdev, TRUE);
2067 break;
2068 case SIOCGRECEIVING: /* Check if we are receiving right now */
2069 IRDA_DEBUG(2, "%s(), SIOCGRECEIVING\n", __FUNCTION__ );
2070 /* This is protected */
2071 irq->ifr_receiving = ali_ircc_is_receiving(self);
2072 break;
2073 default:
2074 ret = -EOPNOTSUPP;
2075 }
2076
2077 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
2078
2079 return ret;
2080}
2081
2082/*
2083 * Function ali_ircc_is_receiving (self)
2084 *
2085 * Return TRUE is we are currently receiving a frame
2086 *
2087 */
2088static int ali_ircc_is_receiving(struct ali_ircc_cb *self)
2089{
2090 unsigned long flags;
2091 int status = FALSE;
2092 int iobase;
2093
2094 IRDA_DEBUG(2, "%s(), ---------------- Start -----------------\n", __FUNCTION__ );
2095
2096 IRDA_ASSERT(self != NULL, return FALSE;);
2097
2098 spin_lock_irqsave(&self->lock, flags);
2099
2100 if (self->io.speed > 115200)
2101 {
2102 iobase = self->io.fir_base;
2103
2104 switch_bank(iobase, BANK1);
2105 if((inb(iobase+FIR_FIFO_FR) & 0x3f) != 0)
2106 {
2107 /* We are receiving something */
2108 IRDA_DEBUG(1, "%s(), We are receiving something\n", __FUNCTION__ );
2109 status = TRUE;
2110 }
2111 switch_bank(iobase, BANK0);
2112 }
2113 else
2114 {
2115 status = (self->rx_buff.state != OUTSIDE_FRAME);
2116 }
2117
2118 spin_unlock_irqrestore(&self->lock, flags);
2119
2120 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
2121
2122 return status;
2123}
2124
2125static struct net_device_stats *ali_ircc_net_get_stats(struct net_device *dev)
2126{
2127 struct ali_ircc_cb *self = (struct ali_ircc_cb *) dev->priv;
2128
2129 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__ );
2130
2131 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
2132
2133 return &self->stats;
2134}
2135
898b1d16 2136static int ali_ircc_suspend(struct platform_device *dev, pm_message_t state)
1da177e4 2137{
898b1d16 2138 struct ali_ircc_cb *self = platform_get_drvdata(dev);
1da177e4 2139
898b1d16 2140 IRDA_MESSAGE("%s, Suspending\n", ALI_IRCC_DRIVER_NAME);
1da177e4
LT		 2141
2142 if (self->io.suspended)
898b1d16 2143 return 0;
1da177e4
LT		 2144
2145 ali_ircc_net_close(self->netdev);
2146
2147 self->io.suspended = 1;
2148
898b1d16 2149 return 0;
1da177e4
LT		 2150}
2151
898b1d16 2152static int ali_ircc_resume(struct platform_device *dev)
1da177e4 2153{
898b1d16 2154 struct ali_ircc_cb *self = platform_get_drvdata(dev);
1da177e4
LT		 2155
2156 if (!self->io.suspended)
898b1d16 2157 return 0;
1da177e4
LT		 2158
2159 ali_ircc_net_open(self->netdev);
2160
898b1d16 2161 IRDA_MESSAGE("%s, Waking up\n", ALI_IRCC_DRIVER_NAME);
1da177e4
LT		 2162
2163 self->io.suspended = 0;
1da177e4 2164
1da177e4
LT		 2165 return 0;
2166}
2167
1da177e4
LT		 2168/* ALi Chip Function */
2169
2170static void SetCOMInterrupts(struct ali_ircc_cb *self , unsigned char enable)
2171{
2172
2173 unsigned char newMask;
2174
2175 int iobase = self->io.fir_base; /* or sir_base */
2176
2177 IRDA_DEBUG(2, "%s(), -------- Start -------- ( Enable = %d )\n", __FUNCTION__ , enable);
2178
2179 /* Enable the interrupt which we wish to */
2180 if (enable){
2181 if (self->io.direction == IO_XMIT)
2182 {
2183 if (self->io.speed > 115200) /* FIR, MIR */
2184 {
2185 newMask = self->ier;
2186 }
2187 else /* SIR */
2188 {
2189 newMask = UART_IER_THRI | UART_IER_RDI;
2190 }
2191 }
2192 else {
2193 if (self->io.speed > 115200) /* FIR, MIR */
2194 {
2195 newMask = self->ier;
2196 }
2197 else /* SIR */
2198 {
2199 newMask = UART_IER_RDI;
2200 }
2201 }
2202 }
2203 else /* Disable all the interrupts */
2204 {
2205 newMask = 0x00;
2206
2207 }
2208
2209 //SIR and FIR has different registers
2210 if (self->io.speed > 115200)
2211 {
2212 switch_bank(iobase, BANK0);
2213 outb(newMask, iobase+FIR_IER);
2214 }
2215 else
2216 outb(newMask, iobase+UART_IER);
2217
2218 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
2219}
2220
2221static void SIR2FIR(int iobase)
2222{
2223 //unsigned char tmp;
2224
2225 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __FUNCTION__ );
2226
2227 /* Already protected (change_speed() or setup()), no need to lock.
2228 * Jean II */
2229
2230 outb(0x28, iobase+UART_MCR);
2231 outb(0x68, iobase+UART_MCR);
2232 outb(0x88, iobase+UART_MCR);
2233
2234 outb(0x60, iobase+FIR_MCR); /* Master Reset */
2235 outb(0x20, iobase+FIR_MCR); /* Master Interrupt Enable */
2236
2237 //tmp = inb(iobase+FIR_LCR_B); /* SIP enable */
2238 //tmp |= 0x20;
2239 //outb(tmp, iobase+FIR_LCR_B);
2240
2241 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
2242}
2243
2244static void FIR2SIR(int iobase)
2245{
2246 unsigned char val;
2247
2248 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __FUNCTION__ );
2249
2250 /* Already protected (change_speed() or setup()), no need to lock.
2251 * Jean II */
2252
2253 outb(0x20, iobase+FIR_MCR); /* IRQ to low */
2254 outb(0x00, iobase+UART_IER);
2255
2256 outb(0xA0, iobase+FIR_MCR); /* Don't set master reset */
2257 outb(0x00, iobase+UART_FCR);
2258 outb(0x07, iobase+UART_FCR);
2259
2260 val = inb(iobase+UART_RX);
2261 val = inb(iobase+UART_LSR);
2262 val = inb(iobase+UART_MSR);
2263
2264 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
2265}
2266
2267MODULE_AUTHOR("Benjamin Kong <benjamin_kong@ali.com.tw>");
2268MODULE_DESCRIPTION("ALi FIR Controller Driver");
2269MODULE_LICENSE("GPL");
2270
2271
2272module_param_array(io, int, NULL, 0);
2273MODULE_PARM_DESC(io, "Base I/O addresses");
2274module_param_array(irq, int, NULL, 0);
2275MODULE_PARM_DESC(irq, "IRQ lines");
2276module_param_array(dma, int, NULL, 0);
2277MODULE_PARM_DESC(dma, "DMA channels");
2278
2279module_init(ali_ircc_init);
2280module_exit(ali_ircc_cleanup);
Clone of davem's net-next-2.6 tree