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[ARM] pxa: Gumstix Verdex PCMCIA support
[linux-2.6/verdex.git] / drivers / net / irda / ali-ircc.c
blob12c7b006f767cbf5b2eac5442306d2c079d5959c
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 netdev_tx_t ali_ircc_sir_hard_xmit(struct sk_buff *skb,
115 struct net_device *dev);
116 static irqreturn_t ali_ircc_sir_interrupt(struct ali_ircc_cb *self);
117 static void ali_ircc_sir_receive(struct ali_ircc_cb *self);
118 static void ali_ircc_sir_write_wakeup(struct ali_ircc_cb *self);
119 static int ali_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len);
120 static void ali_ircc_sir_change_speed(struct ali_ircc_cb *priv, __u32 speed);
121
122 /* FIR function */
123 static netdev_tx_t ali_ircc_fir_hard_xmit(struct sk_buff *skb,
124 struct net_device *dev);
125 static void ali_ircc_fir_change_speed(struct ali_ircc_cb *priv, __u32 speed);
126 static irqreturn_t ali_ircc_fir_interrupt(struct ali_ircc_cb *self);
127 static int ali_ircc_dma_receive(struct ali_ircc_cb *self);
128 static int ali_ircc_dma_receive_complete(struct ali_ircc_cb *self);
129 static int ali_ircc_dma_xmit_complete(struct ali_ircc_cb *self);
130 static void ali_ircc_dma_xmit(struct ali_ircc_cb *self);
131
132 /* My Function */
133 static int ali_ircc_read_dongle_id (int i, chipio_t *info);
134 static void ali_ircc_change_dongle_speed(struct ali_ircc_cb *priv, int speed);
135
136 /* ALi chip function */
137 static void SIR2FIR(int iobase);
138 static void FIR2SIR(int iobase);
139 static void SetCOMInterrupts(struct ali_ircc_cb *self , unsigned char enable);
140
141 /*
142 * Function ali_ircc_init ()
143 *
144 * Initialize chip. Find out whay kinds of chips we are dealing with
145 * and their configuation registers address
146 */
147 static int __init ali_ircc_init(void)
148 {
149 ali_chip_t *chip;
150 chipio_t info;
151 int ret;
152 int cfg, cfg_base;
153 int reg, revision;
154 int i = 0;
155
156 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
157
158 ret = platform_driver_register(&ali_ircc_driver);
159 if (ret) {
160 IRDA_ERROR("%s, Can't register driver!\n",
161 ALI_IRCC_DRIVER_NAME);
162 return ret;
163 }
164
165 ret = -ENODEV;
166
167 /* Probe for all the ALi chipsets we know about */
168 for (chip= chips; chip->name; chip++, i++)
169 {
170 IRDA_DEBUG(2, "%s(), Probing for %s ...\n", __func__, chip->name);
171
172 /* Try all config registers for this chip */
173 for (cfg=0; cfg<2; cfg++)
174 {
175 cfg_base = chip->cfg[cfg];
176 if (!cfg_base)
177 continue;
178
179 memset(&info, 0, sizeof(chipio_t));
180 info.cfg_base = cfg_base;
181 info.fir_base = io[i];
182 info.dma = dma[i];
183 info.irq = irq[i];
184
185
186 /* Enter Configuration */
187 outb(chip->entr1, cfg_base);
188 outb(chip->entr2, cfg_base);
189
190 /* Select Logical Device 5 Registers (UART2) */
191 outb(0x07, cfg_base);
192 outb(0x05, cfg_base+1);
193
194 /* Read Chip Identification Register */
195 outb(chip->cid_index, cfg_base);
196 reg = inb(cfg_base+1);
197
198 if (reg == chip->cid_value)
199 {
200 IRDA_DEBUG(2, "%s(), Chip found at 0x%03x\n", __func__, cfg_base);
201
202 outb(0x1F, cfg_base);
203 revision = inb(cfg_base+1);
204 IRDA_DEBUG(2, "%s(), Found %s chip, revision=%d\n", __func__,
205 chip->name, revision);
206
207 /*
208 * If the user supplies the base address, then
209 * we init the chip, if not we probe the values
210 * set by the BIOS
211 */
212 if (io[i] < 2000)
213 {
214 chip->init(chip, &info);
215 }
216 else
217 {
218 chip->probe(chip, &info);
219 }
220
221 if (ali_ircc_open(i, &info) == 0)
222 ret = 0;
223 i++;
224 }
225 else
226 {
227 IRDA_DEBUG(2, "%s(), No %s chip at 0x%03x\n", __func__, chip->name, cfg_base);
228 }
229 /* Exit configuration */
230 outb(0xbb, cfg_base);
231 }
232 }
233
234 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__);
235
236 if (ret)
237 platform_driver_unregister(&ali_ircc_driver);
238
239 return ret;
240 }
241
242 /*
243 * Function ali_ircc_cleanup ()
244 *
245 * Close all configured chips
246 *
247 */
248 static void __exit ali_ircc_cleanup(void)
249 {
250 int i;
251
252 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
253
254 for (i=0; i < ARRAY_SIZE(dev_self); i++) {
255 if (dev_self[i])
256 ali_ircc_close(dev_self[i]);
257 }
258
259 platform_driver_unregister(&ali_ircc_driver);
260
261 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__);
262 }
263
264 static const struct net_device_ops ali_ircc_sir_ops = {
265 .ndo_open = ali_ircc_net_open,
266 .ndo_stop = ali_ircc_net_close,
267 .ndo_start_xmit = ali_ircc_sir_hard_xmit,
268 .ndo_do_ioctl = ali_ircc_net_ioctl,
269 };
270
271 static const struct net_device_ops ali_ircc_fir_ops = {
272 .ndo_open = ali_ircc_net_open,
273 .ndo_stop = ali_ircc_net_close,
274 .ndo_start_xmit = ali_ircc_fir_hard_xmit,
275 .ndo_do_ioctl = ali_ircc_net_ioctl,
276 };
277
278 /*
279 * Function ali_ircc_open (int i, chipio_t *inf)
280 *
281 * Open driver instance
282 *
283 */
284 static int ali_ircc_open(int i, chipio_t *info)
285 {
286 struct net_device *dev;
287 struct ali_ircc_cb *self;
288 int dongle_id;
289 int err;
290
291 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
292
293 if (i >= ARRAY_SIZE(dev_self)) {
294 IRDA_ERROR("%s(), maximum number of supported chips reached!\n",
295 __func__);
296 return -ENOMEM;
297 }
298
299 /* Set FIR FIFO and DMA Threshold */
300 if ((ali_ircc_setup(info)) == -1)
301 return -1;
302
303 dev = alloc_irdadev(sizeof(*self));
304 if (dev == NULL) {
305 IRDA_ERROR("%s(), can't allocate memory for control block!\n",
306 __func__);
307 return -ENOMEM;
308 }
309
310 self = netdev_priv(dev);
311 self->netdev = dev;
312 spin_lock_init(&self->lock);
313
314 /* Need to store self somewhere */
315 dev_self[i] = self;
316 self->index = i;
317
318 /* Initialize IO */
319 self->io.cfg_base = info->cfg_base; /* In ali_ircc_probe_53 assign */
320 self->io.fir_base = info->fir_base; /* info->sir_base = info->fir_base */
321 self->io.sir_base = info->sir_base; /* ALi SIR and FIR use the same address */
322 self->io.irq = info->irq;
323 self->io.fir_ext = CHIP_IO_EXTENT;
324 self->io.dma = info->dma;
325 self->io.fifo_size = 16; /* SIR: 16, FIR: 32 Benjamin 2000/11/1 */
326
327 /* Reserve the ioports that we need */
328 if (!request_region(self->io.fir_base, self->io.fir_ext,
329 ALI_IRCC_DRIVER_NAME)) {
330 IRDA_WARNING("%s(), can't get iobase of 0x%03x\n", __func__,
331 self->io.fir_base);
332 err = -ENODEV;
333 goto err_out1;
334 }
335
336 /* Initialize QoS for this device */
337 irda_init_max_qos_capabilies(&self->qos);
338
339 /* The only value we must override it the baudrate */
340 self->qos.baud_rate.bits = IR_9600|IR_19200|IR_38400|IR_57600|
341 IR_115200|IR_576000|IR_1152000|(IR_4000000 << 8); // benjamin 2000/11/8 05:27PM
342
343 self->qos.min_turn_time.bits = qos_mtt_bits;
344
345 irda_qos_bits_to_value(&self->qos);
346
347 /* Max DMA buffer size needed = (data_size + 6) * (window_size) + 6; */
348 self->rx_buff.truesize = 14384;
349 self->tx_buff.truesize = 14384;
350
351 /* Allocate memory if needed */
352 self->rx_buff.head =
353 dma_alloc_coherent(NULL, self->rx_buff.truesize,
354 &self->rx_buff_dma, GFP_KERNEL);
355 if (self->rx_buff.head == NULL) {
356 err = -ENOMEM;
357 goto err_out2;
358 }
359 memset(self->rx_buff.head, 0, self->rx_buff.truesize);
360
361 self->tx_buff.head =
362 dma_alloc_coherent(NULL, self->tx_buff.truesize,
363 &self->tx_buff_dma, GFP_KERNEL);
364 if (self->tx_buff.head == NULL) {
365 err = -ENOMEM;
366 goto err_out3;
367 }
368 memset(self->tx_buff.head, 0, self->tx_buff.truesize);
369
370 self->rx_buff.in_frame = FALSE;
371 self->rx_buff.state = OUTSIDE_FRAME;
372 self->tx_buff.data = self->tx_buff.head;
373 self->rx_buff.data = self->rx_buff.head;
374
375 /* Reset Tx queue info */
376 self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0;
377 self->tx_fifo.tail = self->tx_buff.head;
378
379 /* Override the network functions we need to use */
380 dev->netdev_ops = &ali_ircc_sir_ops;
381
382 err = register_netdev(dev);
383 if (err) {
384 IRDA_ERROR("%s(), register_netdev() failed!\n", __func__);
385 goto err_out4;
386 }
387 IRDA_MESSAGE("IrDA: Registered device %s\n", dev->name);
388
389 /* Check dongle id */
390 dongle_id = ali_ircc_read_dongle_id(i, info);
391 IRDA_MESSAGE("%s(), %s, Found dongle: %s\n", __func__,
392 ALI_IRCC_DRIVER_NAME, dongle_types[dongle_id]);
393
394 self->io.dongle_id = dongle_id;
395
396 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__);
397
398 return 0;
399
400 err_out4:
401 dma_free_coherent(NULL, self->tx_buff.truesize,
402 self->tx_buff.head, self->tx_buff_dma);
403 err_out3:
404 dma_free_coherent(NULL, self->rx_buff.truesize,
405 self->rx_buff.head, self->rx_buff_dma);
406 err_out2:
407 release_region(self->io.fir_base, self->io.fir_ext);
408 err_out1:
409 dev_self[i] = NULL;
410 free_netdev(dev);
411 return err;
412 }
413
414
415 /*
416 * Function ali_ircc_close (self)
417 *
418 * Close driver instance
419 *
420 */
421 static int __exit ali_ircc_close(struct ali_ircc_cb *self)
422 {
423 int iobase;
424
425 IRDA_DEBUG(4, "%s(), ---------------- Start ----------------\n", __func__);
426
427 IRDA_ASSERT(self != NULL, return -1;);
428
429 iobase = self->io.fir_base;
430
431 /* Remove netdevice */
432 unregister_netdev(self->netdev);
433
434 /* Release the PORT that this driver is using */
435 IRDA_DEBUG(4, "%s(), Releasing Region %03x\n", __func__, self->io.fir_base);
436 release_region(self->io.fir_base, self->io.fir_ext);
437
438 if (self->tx_buff.head)
439 dma_free_coherent(NULL, self->tx_buff.truesize,
440 self->tx_buff.head, self->tx_buff_dma);
441
442 if (self->rx_buff.head)
443 dma_free_coherent(NULL, self->rx_buff.truesize,
444 self->rx_buff.head, self->rx_buff_dma);
445
446 dev_self[self->index] = NULL;
447 free_netdev(self->netdev);
448
449 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__);
450
451 return 0;
452 }
453
454 /*
455 * Function ali_ircc_init_43 (chip, info)
456 *
457 * Initialize the ALi M1543 chip.
458 */
459 static int ali_ircc_init_43(ali_chip_t *chip, chipio_t *info)
460 {
461 /* All controller information like I/O address, DMA channel, IRQ
462 * are set by BIOS
463 */
464
465 return 0;
466 }
467
468 /*
469 * Function ali_ircc_init_53 (chip, info)
470 *
471 * Initialize the ALi M1535 chip.
472 */
473 static int ali_ircc_init_53(ali_chip_t *chip, chipio_t *info)
474 {
475 /* All controller information like I/O address, DMA channel, IRQ
476 * are set by BIOS
477 */
478
479 return 0;
480 }
481
482 /*
483 * Function ali_ircc_probe_53 (chip, info)
484 *
485 * Probes for the ALi M1535D or M1535
486 */
487 static int ali_ircc_probe_53(ali_chip_t *chip, chipio_t *info)
488 {
489 int cfg_base = info->cfg_base;
490 int hi, low, reg;
491
492 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
493
494 /* Enter Configuration */
495 outb(chip->entr1, cfg_base);
496 outb(chip->entr2, cfg_base);
497
498 /* Select Logical Device 5 Registers (UART2) */
499 outb(0x07, cfg_base);
500 outb(0x05, cfg_base+1);
501
502 /* Read address control register */
503 outb(0x60, cfg_base);
504 hi = inb(cfg_base+1);
505 outb(0x61, cfg_base);
506 low = inb(cfg_base+1);
507 info->fir_base = (hi<<8) + low;
508
509 info->sir_base = info->fir_base;
510
511 IRDA_DEBUG(2, "%s(), probing fir_base=0x%03x\n", __func__, info->fir_base);
512
513 /* Read IRQ control register */
514 outb(0x70, cfg_base);
515 reg = inb(cfg_base+1);
516 info->irq = reg & 0x0f;
517 IRDA_DEBUG(2, "%s(), probing irq=%d\n", __func__, info->irq);
518
519 /* Read DMA channel */
520 outb(0x74, cfg_base);
521 reg = inb(cfg_base+1);
522 info->dma = reg & 0x07;
523
524 if(info->dma == 0x04)
525 IRDA_WARNING("%s(), No DMA channel assigned !\n", __func__);
526 else
527 IRDA_DEBUG(2, "%s(), probing dma=%d\n", __func__, info->dma);
528
529 /* Read Enabled Status */
530 outb(0x30, cfg_base);
531 reg = inb(cfg_base+1);
532 info->enabled = (reg & 0x80) && (reg & 0x01);
533 IRDA_DEBUG(2, "%s(), probing enabled=%d\n", __func__, info->enabled);
534
535 /* Read Power Status */
536 outb(0x22, cfg_base);
537 reg = inb(cfg_base+1);
538 info->suspended = (reg & 0x20);
539 IRDA_DEBUG(2, "%s(), probing suspended=%d\n", __func__, info->suspended);
540
541 /* Exit configuration */
542 outb(0xbb, cfg_base);
543
544 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__);
545
546 return 0;
547 }
548
549 /*
550 * Function ali_ircc_setup (info)
551 *
552 * Set FIR FIFO and DMA Threshold
553 * Returns non-negative on success.
554 *
555 */
556 static int ali_ircc_setup(chipio_t *info)
557 {
558 unsigned char tmp;
559 int version;
560 int iobase = info->fir_base;
561
562 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
563
564 /* Locking comments :
565 * Most operations here need to be protected. We are called before
566 * the device instance is created in ali_ircc_open(), therefore
567 * nobody can bother us - Jean II */
568
569 /* Switch to FIR space */
570 SIR2FIR(iobase);
571
572 /* Master Reset */
573 outb(0x40, iobase+FIR_MCR); // benjamin 2000/11/30 11:45AM
574
575 /* Read FIR ID Version Register */
576 switch_bank(iobase, BANK3);
577 version = inb(iobase+FIR_ID_VR);
578
579 /* Should be 0x00 in the M1535/M1535D */
580 if(version != 0x00)
581 {
582 IRDA_ERROR("%s, Wrong chip version %02x\n",
583 ALI_IRCC_DRIVER_NAME, version);
584 return -1;
585 }
586
587 /* Set FIR FIFO Threshold Register */
588 switch_bank(iobase, BANK1);
589 outb(RX_FIFO_Threshold, iobase+FIR_FIFO_TR);
590
591 /* Set FIR DMA Threshold Register */
592 outb(RX_DMA_Threshold, iobase+FIR_DMA_TR);
593
594 /* CRC enable */
595 switch_bank(iobase, BANK2);
596 outb(inb(iobase+FIR_IRDA_CR) | IRDA_CR_CRC, iobase+FIR_IRDA_CR);
597
598 /* NDIS driver set TX Length here BANK2 Alias 3, Alias4*/
599
600 /* Switch to Bank 0 */
601 switch_bank(iobase, BANK0);
602
603 tmp = inb(iobase+FIR_LCR_B);
604 tmp &=~0x20; // disable SIP
605 tmp |= 0x80; // these two steps make RX mode
606 tmp &= 0xbf;
607 outb(tmp, iobase+FIR_LCR_B);
608
609 /* Disable Interrupt */
610 outb(0x00, iobase+FIR_IER);
611
612
613 /* Switch to SIR space */
614 FIR2SIR(iobase);
615
616 IRDA_MESSAGE("%s, driver loaded (Benjamin Kong)\n",
617 ALI_IRCC_DRIVER_NAME);
618
619 /* Enable receive interrupts */
620 // outb(UART_IER_RDI, iobase+UART_IER); //benjamin 2000/11/23 01:25PM
621 // Turn on the interrupts in ali_ircc_net_open
622
623 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__);
624
625 return 0;
626 }
627
628 /*
629 * Function ali_ircc_read_dongle_id (int index, info)
630 *
631 * Try to read dongle indentification. This procedure needs to be executed
632 * once after power-on/reset. It also needs to be used whenever you suspect
633 * that the user may have plugged/unplugged the IrDA Dongle.
634 */
635 static int ali_ircc_read_dongle_id (int i, chipio_t *info)
636 {
637 int dongle_id, reg;
638 int cfg_base = info->cfg_base;
639
640 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
641
642 /* Enter Configuration */
643 outb(chips[i].entr1, cfg_base);
644 outb(chips[i].entr2, cfg_base);
645
646 /* Select Logical Device 5 Registers (UART2) */
647 outb(0x07, cfg_base);
648 outb(0x05, cfg_base+1);
649
650 /* Read Dongle ID */
651 outb(0xf0, cfg_base);
652 reg = inb(cfg_base+1);
653 dongle_id = ((reg>>6)&0x02) | ((reg>>5)&0x01);
654 IRDA_DEBUG(2, "%s(), probing dongle_id=%d, dongle_types=%s\n", __func__,
655 dongle_id, dongle_types[dongle_id]);
656
657 /* Exit configuration */
658 outb(0xbb, cfg_base);
659
660 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__);
661
662 return dongle_id;
663 }
664
665 /*
666 * Function ali_ircc_interrupt (irq, dev_id, regs)
667 *
668 * An interrupt from the chip has arrived. Time to do some work
669 *
670 */
671 static irqreturn_t ali_ircc_interrupt(int irq, void *dev_id)
672 {
673 struct net_device *dev = dev_id;
674 struct ali_ircc_cb *self;
675 int ret;
676
677 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
678
679 self = netdev_priv(dev);
680
681 spin_lock(&self->lock);
682
683 /* Dispatch interrupt handler for the current speed */
684 if (self->io.speed > 115200)
685 ret = ali_ircc_fir_interrupt(self);
686 else
687 ret = ali_ircc_sir_interrupt(self);
688
689 spin_unlock(&self->lock);
690
691 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__);
692 return ret;
693 }
694 /*
695 * Function ali_ircc_fir_interrupt(irq, struct ali_ircc_cb *self)
696 *
697 * Handle MIR/FIR interrupt
698 *
699 */
700 static irqreturn_t ali_ircc_fir_interrupt(struct ali_ircc_cb *self)
701 {
702 __u8 eir, OldMessageCount;
703 int iobase, tmp;
704
705 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__);
706
707 iobase = self->io.fir_base;
708
709 switch_bank(iobase, BANK0);
710 self->InterruptID = inb(iobase+FIR_IIR);
711 self->BusStatus = inb(iobase+FIR_BSR);
712
713 OldMessageCount = (self->LineStatus + 1) & 0x07;
714 self->LineStatus = inb(iobase+FIR_LSR);
715 //self->ier = inb(iobase+FIR_IER); 2000/12/1 04:32PM
716 eir = self->InterruptID & self->ier; /* Mask out the interesting ones */
717
718 IRDA_DEBUG(1, "%s(), self->InterruptID = %x\n", __func__,self->InterruptID);
719 IRDA_DEBUG(1, "%s(), self->LineStatus = %x\n", __func__,self->LineStatus);
720 IRDA_DEBUG(1, "%s(), self->ier = %x\n", __func__,self->ier);
721 IRDA_DEBUG(1, "%s(), eir = %x\n", __func__,eir);
722
723 /* Disable interrupts */
724 SetCOMInterrupts(self, FALSE);
725
726 /* Tx or Rx Interrupt */
727
728 if (eir & IIR_EOM)
729 {
730 if (self->io.direction == IO_XMIT) /* TX */
731 {
732 IRDA_DEBUG(1, "%s(), ******* IIR_EOM (Tx) *******\n", __func__);
733
734 if(ali_ircc_dma_xmit_complete(self))
735 {
736 if (irda_device_txqueue_empty(self->netdev))
737 {
738 /* Prepare for receive */
739 ali_ircc_dma_receive(self);
740 self->ier = IER_EOM;
741 }
742 }
743 else
744 {
745 self->ier = IER_EOM;
746 }
747
748 }
749 else /* RX */
750 {
751 IRDA_DEBUG(1, "%s(), ******* IIR_EOM (Rx) *******\n", __func__);
752
753 if(OldMessageCount > ((self->LineStatus+1) & 0x07))
754 {
755 self->rcvFramesOverflow = TRUE;
756 IRDA_DEBUG(1, "%s(), ******* self->rcvFramesOverflow = TRUE ******** \n", __func__);
757 }
758
759 if (ali_ircc_dma_receive_complete(self))
760 {
761 IRDA_DEBUG(1, "%s(), ******* receive complete ******** \n", __func__);
762
763 self->ier = IER_EOM;
764 }
765 else
766 {
767 IRDA_DEBUG(1, "%s(), ******* Not receive complete ******** \n", __func__);
768
769 self->ier = IER_EOM | IER_TIMER;
770 }
771
772 }
773 }
774 /* Timer Interrupt */
775 else if (eir & IIR_TIMER)
776 {
777 if(OldMessageCount > ((self->LineStatus+1) & 0x07))
778 {
779 self->rcvFramesOverflow = TRUE;
780 IRDA_DEBUG(1, "%s(), ******* self->rcvFramesOverflow = TRUE ******* \n", __func__);
781 }
782 /* Disable Timer */
783 switch_bank(iobase, BANK1);
784 tmp = inb(iobase+FIR_CR);
785 outb( tmp& ~CR_TIMER_EN, iobase+FIR_CR);
786
787 /* Check if this is a Tx timer interrupt */
788 if (self->io.direction == IO_XMIT)
789 {
790 ali_ircc_dma_xmit(self);
791
792 /* Interrupt on EOM */
793 self->ier = IER_EOM;
794
795 }
796 else /* Rx */
797 {
798 if(ali_ircc_dma_receive_complete(self))
799 {
800 self->ier = IER_EOM;
801 }
802 else
803 {
804 self->ier = IER_EOM | IER_TIMER;
805 }
806 }
807 }
808
809 /* Restore Interrupt */
810 SetCOMInterrupts(self, TRUE);
811
812 IRDA_DEBUG(1, "%s(), ----------------- End ---------------\n", __func__);
813 return IRQ_RETVAL(eir);
814 }
815
816 /*
817 * Function ali_ircc_sir_interrupt (irq, self, eir)
818 *
819 * Handle SIR interrupt
820 *
821 */
822 static irqreturn_t ali_ircc_sir_interrupt(struct ali_ircc_cb *self)
823 {
824 int iobase;
825 int iir, lsr;
826
827 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
828
829 iobase = self->io.sir_base;
830
831 iir = inb(iobase+UART_IIR) & UART_IIR_ID;
832 if (iir) {
833 /* Clear interrupt */
834 lsr = inb(iobase+UART_LSR);
835
836 IRDA_DEBUG(4, "%s(), iir=%02x, lsr=%02x, iobase=%#x\n", __func__,
837 iir, lsr, iobase);
838
839 switch (iir)
840 {
841 case UART_IIR_RLSI:
842 IRDA_DEBUG(2, "%s(), RLSI\n", __func__);
843 break;
844 case UART_IIR_RDI:
845 /* Receive interrupt */
846 ali_ircc_sir_receive(self);
847 break;
848 case UART_IIR_THRI:
849 if (lsr & UART_LSR_THRE)
850 {
851 /* Transmitter ready for data */
852 ali_ircc_sir_write_wakeup(self);
853 }
854 break;
855 default:
856 IRDA_DEBUG(0, "%s(), unhandled IIR=%#x\n", __func__, iir);
857 break;
858 }
859
860 }
861
862
863 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__);
864
865 return IRQ_RETVAL(iir);
866 }
867
868
869 /*
870 * Function ali_ircc_sir_receive (self)
871 *
872 * Receive one frame from the infrared port
873 *
874 */
875 static void ali_ircc_sir_receive(struct ali_ircc_cb *self)
876 {
877 int boguscount = 0;
878 int iobase;
879
880 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
881 IRDA_ASSERT(self != NULL, return;);
882
883 iobase = self->io.sir_base;
884
885 /*
886 * Receive all characters in Rx FIFO, unwrap and unstuff them.
887 * async_unwrap_char will deliver all found frames
888 */
889 do {
890 async_unwrap_char(self->netdev, &self->netdev->stats, &self->rx_buff,
891 inb(iobase+UART_RX));
892
893 /* Make sure we don't stay here too long */
894 if (boguscount++ > 32) {
895 IRDA_DEBUG(2,"%s(), breaking!\n", __func__);
896 break;
897 }
898 } while (inb(iobase+UART_LSR) & UART_LSR_DR);
899
900 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
901 }
902
903 /*
904 * Function ali_ircc_sir_write_wakeup (tty)
905 *
906 * Called by the driver when there's room for more data. If we have
907 * more packets to send, we send them here.
908 *
909 */
910 static void ali_ircc_sir_write_wakeup(struct ali_ircc_cb *self)
911 {
912 int actual = 0;
913 int iobase;
914
915 IRDA_ASSERT(self != NULL, return;);
916
917 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ );
918
919 iobase = self->io.sir_base;
920
921 /* Finished with frame? */
922 if (self->tx_buff.len > 0)
923 {
924 /* Write data left in transmit buffer */
925 actual = ali_ircc_sir_write(iobase, self->io.fifo_size,
926 self->tx_buff.data, self->tx_buff.len);
927 self->tx_buff.data += actual;
928 self->tx_buff.len -= actual;
929 }
930 else
931 {
932 if (self->new_speed)
933 {
934 /* We must wait until all data are gone */
935 while(!(inb(iobase+UART_LSR) & UART_LSR_TEMT))
936 IRDA_DEBUG(1, "%s(), UART_LSR_THRE\n", __func__ );
937
938 IRDA_DEBUG(1, "%s(), Changing speed! self->new_speed = %d\n", __func__ , self->new_speed);
939 ali_ircc_change_speed(self, self->new_speed);
940 self->new_speed = 0;
941
942 // benjamin 2000/11/10 06:32PM
943 if (self->io.speed > 115200)
944 {
945 IRDA_DEBUG(2, "%s(), ali_ircc_change_speed from UART_LSR_TEMT \n", __func__ );
946
947 self->ier = IER_EOM;
948 // SetCOMInterrupts(self, TRUE);
949 return;
950 }
951 }
952 else
953 {
954 netif_wake_queue(self->netdev);
955 }
956
957 self->netdev->stats.tx_packets++;
958
959 /* Turn on receive interrupts */
960 outb(UART_IER_RDI, iobase+UART_IER);
961 }
962
963 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
964 }
965
966 static void ali_ircc_change_speed(struct ali_ircc_cb *self, __u32 baud)
967 {
968 struct net_device *dev = self->netdev;
969 int iobase;
970
971 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ );
972
973 IRDA_DEBUG(2, "%s(), setting speed = %d \n", __func__ , baud);
974
975 /* This function *must* be called with irq off and spin-lock.
976 * - Jean II */
977
978 iobase = self->io.fir_base;
979
980 SetCOMInterrupts(self, FALSE); // 2000/11/24 11:43AM
981
982 /* Go to MIR, FIR Speed */
983 if (baud > 115200)
984 {
985
986
987 ali_ircc_fir_change_speed(self, baud);
988
989 /* Install FIR xmit handler*/
990 dev->netdev_ops = &ali_ircc_fir_ops;
991
992 /* Enable Interuupt */
993 self->ier = IER_EOM; // benjamin 2000/11/20 07:24PM
994
995 /* Be ready for incomming frames */
996 ali_ircc_dma_receive(self); // benajmin 2000/11/8 07:46PM not complete
997 }
998 /* Go to SIR Speed */
999 else
1000 {
1001 ali_ircc_sir_change_speed(self, baud);
1002
1003 /* Install SIR xmit handler*/
1004 dev->netdev_ops = &ali_ircc_sir_ops;
1005 }
1006
1007
1008 SetCOMInterrupts(self, TRUE); // 2000/11/24 11:43AM
1009
1010 netif_wake_queue(self->netdev);
1011
1012 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
1013 }
1014
1015 static void ali_ircc_fir_change_speed(struct ali_ircc_cb *priv, __u32 baud)
1016 {
1017
1018 int iobase;
1019 struct ali_ircc_cb *self = (struct ali_ircc_cb *) priv;
1020 struct net_device *dev;
1021
1022 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ );
1023
1024 IRDA_ASSERT(self != NULL, return;);
1025
1026 dev = self->netdev;
1027 iobase = self->io.fir_base;
1028
1029 IRDA_DEBUG(1, "%s(), self->io.speed = %d, change to speed = %d\n", __func__ ,self->io.speed,baud);
1030
1031 /* Come from SIR speed */
1032 if(self->io.speed <=115200)
1033 {
1034 SIR2FIR(iobase);
1035 }
1036
1037 /* Update accounting for new speed */
1038 self->io.speed = baud;
1039
1040 // Set Dongle Speed mode
1041 ali_ircc_change_dongle_speed(self, baud);
1042
1043 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
1044 }
1045
1046 /*
1047 * Function ali_sir_change_speed (self, speed)
1048 *
1049 * Set speed of IrDA port to specified baudrate
1050 *
1051 */
1052 static void ali_ircc_sir_change_speed(struct ali_ircc_cb *priv, __u32 speed)
1053 {
1054 struct ali_ircc_cb *self = (struct ali_ircc_cb *) priv;
1055 unsigned long flags;
1056 int iobase;
1057 int fcr; /* FIFO control reg */
1058 int lcr; /* Line control reg */
1059 int divisor;
1060
1061 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ );
1062
1063 IRDA_DEBUG(1, "%s(), Setting speed to: %d\n", __func__ , speed);
1064
1065 IRDA_ASSERT(self != NULL, return;);
1066
1067 iobase = self->io.sir_base;
1068
1069 /* Come from MIR or FIR speed */
1070 if(self->io.speed >115200)
1071 {
1072 // Set Dongle Speed mode first
1073 ali_ircc_change_dongle_speed(self, speed);
1074
1075 FIR2SIR(iobase);
1076 }
1077
1078 // Clear Line and Auxiluary status registers 2000/11/24 11:47AM
1079
1080 inb(iobase+UART_LSR);
1081 inb(iobase+UART_SCR);
1082
1083 /* Update accounting for new speed */
1084 self->io.speed = speed;
1085
1086 spin_lock_irqsave(&self->lock, flags);
1087
1088 divisor = 115200/speed;
1089
1090 fcr = UART_FCR_ENABLE_FIFO;
1091
1092 /*
1093 * Use trigger level 1 to avoid 3 ms. timeout delay at 9600 bps, and
1094 * almost 1,7 ms at 19200 bps. At speeds above that we can just forget
1095 * about this timeout since it will always be fast enough.
1096 */
1097 if (self->io.speed < 38400)
1098 fcr |= UART_FCR_TRIGGER_1;
1099 else
1100 fcr |= UART_FCR_TRIGGER_14;
1101
1102 /* IrDA ports use 8N1 */
1103 lcr = UART_LCR_WLEN8;
1104
1105 outb(UART_LCR_DLAB | lcr, iobase+UART_LCR); /* Set DLAB */
1106 outb(divisor & 0xff, iobase+UART_DLL); /* Set speed */
1107 outb(divisor >> 8, iobase+UART_DLM);
1108 outb(lcr, iobase+UART_LCR); /* Set 8N1 */
1109 outb(fcr, iobase+UART_FCR); /* Enable FIFO's */
1110
1111 /* without this, the conection will be broken after come back from FIR speed,
1112 but with this, the SIR connection is harder to established */
1113 outb((UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2), iobase+UART_MCR);
1114
1115 spin_unlock_irqrestore(&self->lock, flags);
1116
1117 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
1118 }
1119
1120 static void ali_ircc_change_dongle_speed(struct ali_ircc_cb *priv, int speed)
1121 {
1122
1123 struct ali_ircc_cb *self = (struct ali_ircc_cb *) priv;
1124 int iobase,dongle_id;
1125 int tmp = 0;
1126
1127 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ );
1128
1129 iobase = self->io.fir_base; /* or iobase = self->io.sir_base; */
1130 dongle_id = self->io.dongle_id;
1131
1132 /* We are already locked, no need to do it again */
1133
1134 IRDA_DEBUG(1, "%s(), Set Speed for %s , Speed = %d\n", __func__ , dongle_types[dongle_id], speed);
1135
1136 switch_bank(iobase, BANK2);
1137 tmp = inb(iobase+FIR_IRDA_CR);
1138
1139 /* IBM type dongle */
1140 if(dongle_id == 0)
1141 {
1142 if(speed == 4000000)
1143 {
1144 // __ __
1145 // SD/MODE __| |__ __
1146 // __ __
1147 // IRTX __ __| |__
1148 // T1 T2 T3 T4 T5
1149
1150 tmp &= ~IRDA_CR_HDLC; // HDLC=0
1151 tmp |= IRDA_CR_CRC; // CRC=1
1152
1153 switch_bank(iobase, BANK2);
1154 outb(tmp, iobase+FIR_IRDA_CR);
1155
1156 // T1 -> SD/MODE:0 IRTX:0
1157 tmp &= ~0x09;
1158 tmp |= 0x02;
1159 outb(tmp, iobase+FIR_IRDA_CR);
1160 udelay(2);
1161
1162 // T2 -> SD/MODE:1 IRTX:0
1163 tmp &= ~0x01;
1164 tmp |= 0x0a;
1165 outb(tmp, iobase+FIR_IRDA_CR);
1166 udelay(2);
1167
1168 // T3 -> SD/MODE:1 IRTX:1
1169 tmp |= 0x0b;
1170 outb(tmp, iobase+FIR_IRDA_CR);
1171 udelay(2);
1172
1173 // T4 -> SD/MODE:0 IRTX:1
1174 tmp &= ~0x08;
1175 tmp |= 0x03;
1176 outb(tmp, iobase+FIR_IRDA_CR);
1177 udelay(2);
1178
1179 // T5 -> SD/MODE:0 IRTX:0
1180 tmp &= ~0x09;
1181 tmp |= 0x02;
1182 outb(tmp, iobase+FIR_IRDA_CR);
1183 udelay(2);
1184
1185 // reset -> Normal TX output Signal
1186 outb(tmp & ~0x02, iobase+FIR_IRDA_CR);
1187 }
1188 else /* speed <=1152000 */
1189 {
1190 // __
1191 // SD/MODE __| |__
1192 //
1193 // IRTX ________
1194 // T1 T2 T3
1195
1196 /* MIR 115200, 57600 */
1197 if (speed==1152000)
1198 {
1199 tmp |= 0xA0; //HDLC=1, 1.152Mbps=1
1200 }
1201 else
1202 {
1203 tmp &=~0x80; //HDLC 0.576Mbps
1204 tmp |= 0x20; //HDLC=1,
1205 }
1206
1207 tmp |= IRDA_CR_CRC; // CRC=1
1208
1209 switch_bank(iobase, BANK2);
1210 outb(tmp, iobase+FIR_IRDA_CR);
1211
1212 /* MIR 115200, 57600 */
1213
1214 //switch_bank(iobase, BANK2);
1215 // T1 -> SD/MODE:0 IRTX:0
1216 tmp &= ~0x09;
1217 tmp |= 0x02;
1218 outb(tmp, iobase+FIR_IRDA_CR);
1219 udelay(2);
1220
1221 // T2 -> SD/MODE:1 IRTX:0
1222 tmp &= ~0x01;
1223 tmp |= 0x0a;
1224 outb(tmp, iobase+FIR_IRDA_CR);
1225
1226 // T3 -> SD/MODE:0 IRTX:0
1227 tmp &= ~0x09;
1228 tmp |= 0x02;
1229 outb(tmp, iobase+FIR_IRDA_CR);
1230 udelay(2);
1231
1232 // reset -> Normal TX output Signal
1233 outb(tmp & ~0x02, iobase+FIR_IRDA_CR);
1234 }
1235 }
1236 else if (dongle_id == 1) /* HP HDSL-3600 */
1237 {
1238 switch(speed)
1239 {
1240 case 4000000:
1241 tmp &= ~IRDA_CR_HDLC; // HDLC=0
1242 break;
1243
1244 case 1152000:
1245 tmp |= 0xA0; // HDLC=1, 1.152Mbps=1
1246 break;
1247
1248 case 576000:
1249 tmp &=~0x80; // HDLC 0.576Mbps
1250 tmp |= 0x20; // HDLC=1,
1251 break;
1252 }
1253
1254 tmp |= IRDA_CR_CRC; // CRC=1
1255
1256 switch_bank(iobase, BANK2);
1257 outb(tmp, iobase+FIR_IRDA_CR);
1258 }
1259 else /* HP HDSL-1100 */
1260 {
1261 if(speed <= 115200) /* SIR */
1262 {
1263
1264 tmp &= ~IRDA_CR_FIR_SIN; // HP sin select = 0
1265
1266 switch_bank(iobase, BANK2);
1267 outb(tmp, iobase+FIR_IRDA_CR);
1268 }
1269 else /* MIR FIR */
1270 {
1271
1272 switch(speed)
1273 {
1274 case 4000000:
1275 tmp &= ~IRDA_CR_HDLC; // HDLC=0
1276 break;
1277
1278 case 1152000:
1279 tmp |= 0xA0; // HDLC=1, 1.152Mbps=1
1280 break;
1281
1282 case 576000:
1283 tmp &=~0x80; // HDLC 0.576Mbps
1284 tmp |= 0x20; // HDLC=1,
1285 break;
1286 }
1287
1288 tmp |= IRDA_CR_CRC; // CRC=1
1289 tmp |= IRDA_CR_FIR_SIN; // HP sin select = 1
1290
1291 switch_bank(iobase, BANK2);
1292 outb(tmp, iobase+FIR_IRDA_CR);
1293 }
1294 }
1295
1296 switch_bank(iobase, BANK0);
1297
1298 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
1299 }
1300
1301 /*
1302 * Function ali_ircc_sir_write (driver)
1303 *
1304 * Fill Tx FIFO with transmit data
1305 *
1306 */
1307 static int ali_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len)
1308 {
1309 int actual = 0;
1310
1311 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ );
1312
1313 /* Tx FIFO should be empty! */
1314 if (!(inb(iobase+UART_LSR) & UART_LSR_THRE)) {
1315 IRDA_DEBUG(0, "%s(), failed, fifo not empty!\n", __func__ );
1316 return 0;
1317 }
1318
1319 /* Fill FIFO with current frame */
1320 while ((fifo_size-- > 0) && (actual < len)) {
1321 /* Transmit next byte */
1322 outb(buf[actual], iobase+UART_TX);
1323
1324 actual++;
1325 }
1326
1327 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
1328 return actual;
1329 }
1330
1331 /*
1332 * Function ali_ircc_net_open (dev)
1333 *
1334 * Start the device
1335 *
1336 */
1337 static int ali_ircc_net_open(struct net_device *dev)
1338 {
1339 struct ali_ircc_cb *self;
1340 int iobase;
1341 char hwname[32];
1342
1343 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ );
1344
1345 IRDA_ASSERT(dev != NULL, return -1;);
1346
1347 self = netdev_priv(dev);
1348
1349 IRDA_ASSERT(self != NULL, return 0;);
1350
1351 iobase = self->io.fir_base;
1352
1353 /* Request IRQ and install Interrupt Handler */
1354 if (request_irq(self->io.irq, ali_ircc_interrupt, 0, dev->name, dev))
1355 {
1356 IRDA_WARNING("%s, unable to allocate irq=%d\n",
1357 ALI_IRCC_DRIVER_NAME,
1358 self->io.irq);
1359 return -EAGAIN;
1360 }
1361
1362 /*
1363 * Always allocate the DMA channel after the IRQ, and clean up on
1364 * failure.
1365 */
1366 if (request_dma(self->io.dma, dev->name)) {
1367 IRDA_WARNING("%s, unable to allocate dma=%d\n",
1368 ALI_IRCC_DRIVER_NAME,
1369 self->io.dma);
1370 free_irq(self->io.irq, self);
1371 return -EAGAIN;
1372 }
1373
1374 /* Turn on interrups */
1375 outb(UART_IER_RDI , iobase+UART_IER);
1376
1377 /* Ready to play! */
1378 netif_start_queue(dev); //benjamin by irport
1379
1380 /* Give self a hardware name */
1381 sprintf(hwname, "ALI-FIR @ 0x%03x", self->io.fir_base);
1382
1383 /*
1384 * Open new IrLAP layer instance, now that everything should be
1385 * initialized properly
1386 */
1387 self->irlap = irlap_open(dev, &self->qos, hwname);
1388
1389 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
1390
1391 return 0;
1392 }
1393
1394 /*
1395 * Function ali_ircc_net_close (dev)
1396 *
1397 * Stop the device
1398 *
1399 */
1400 static int ali_ircc_net_close(struct net_device *dev)
1401 {
1402
1403 struct ali_ircc_cb *self;
1404 //int iobase;
1405
1406 IRDA_DEBUG(4, "%s(), ---------------- Start ----------------\n", __func__ );
1407
1408 IRDA_ASSERT(dev != NULL, return -1;);
1409
1410 self = netdev_priv(dev);
1411 IRDA_ASSERT(self != NULL, return 0;);
1412
1413 /* Stop device */
1414 netif_stop_queue(dev);
1415
1416 /* Stop and remove instance of IrLAP */
1417 if (self->irlap)
1418 irlap_close(self->irlap);
1419 self->irlap = NULL;
1420
1421 disable_dma(self->io.dma);
1422
1423 /* Disable interrupts */
1424 SetCOMInterrupts(self, FALSE);
1425
1426 free_irq(self->io.irq, dev);
1427 free_dma(self->io.dma);
1428
1429 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
1430
1431 return 0;
1432 }
1433
1434 /*
1435 * Function ali_ircc_fir_hard_xmit (skb, dev)
1436 *
1437 * Transmit the frame
1438 *
1439 */
1440 static netdev_tx_t ali_ircc_fir_hard_xmit(struct sk_buff *skb,
1441 struct net_device *dev)
1442 {
1443 struct ali_ircc_cb *self;
1444 unsigned long flags;
1445 int iobase;
1446 __u32 speed;
1447 int mtt, diff;
1448
1449 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ );
1450
1451 self = netdev_priv(dev);
1452 iobase = self->io.fir_base;
1453
1454 netif_stop_queue(dev);
1455
1456 /* Make sure tests *& speed change are atomic */
1457 spin_lock_irqsave(&self->lock, flags);
1458
1459 /* Note : you should make sure that speed changes are not going
1460 * to corrupt any outgoing frame. Look at nsc-ircc for the gory
1461 * details - Jean II */
1462
1463 /* Check if we need to change the speed */
1464 speed = irda_get_next_speed(skb);
1465 if ((speed != self->io.speed) && (speed != -1)) {
1466 /* Check for empty frame */
1467 if (!skb->len) {
1468 ali_ircc_change_speed(self, speed);
1469 dev->trans_start = jiffies;
1470 spin_unlock_irqrestore(&self->lock, flags);
1471 dev_kfree_skb(skb);
1472 return NETDEV_TX_OK;
1473 } else
1474 self->new_speed = speed;
1475 }
1476
1477 /* Register and copy this frame to DMA memory */
1478 self->tx_fifo.queue[self->tx_fifo.free].start = self->tx_fifo.tail;
1479 self->tx_fifo.queue[self->tx_fifo.free].len = skb->len;
1480 self->tx_fifo.tail += skb->len;
1481
1482 dev->stats.tx_bytes += skb->len;
1483
1484 skb_copy_from_linear_data(skb, self->tx_fifo.queue[self->tx_fifo.free].start,
1485 skb->len);
1486 self->tx_fifo.len++;
1487 self->tx_fifo.free++;
1488
1489 /* Start transmit only if there is currently no transmit going on */
1490 if (self->tx_fifo.len == 1)
1491 {
1492 /* Check if we must wait the min turn time or not */
1493 mtt = irda_get_mtt(skb);
1494
1495 if (mtt)
1496 {
1497 /* Check how much time we have used already */
1498 do_gettimeofday(&self->now);
1499
1500 diff = self->now.tv_usec - self->stamp.tv_usec;
1501 /* self->stamp is set from ali_ircc_dma_receive_complete() */
1502
1503 IRDA_DEBUG(1, "%s(), ******* diff = %d ******* \n", __func__ , diff);
1504
1505 if (diff < 0)
1506 diff += 1000000;
1507
1508 /* Check if the mtt is larger than the time we have
1509 * already used by all the protocol processing
1510 */
1511 if (mtt > diff)
1512 {
1513 mtt -= diff;
1514
1515 /*
1516 * Use timer if delay larger than 1000 us, and
1517 * use udelay for smaller values which should
1518 * be acceptable
1519 */
1520 if (mtt > 500)
1521 {
1522 /* Adjust for timer resolution */
1523 mtt = (mtt+250) / 500; /* 4 discard, 5 get advanced, Let's round off */
1524
1525 IRDA_DEBUG(1, "%s(), ************** mtt = %d ***********\n", __func__ , mtt);
1526
1527 /* Setup timer */
1528 if (mtt == 1) /* 500 us */
1529 {
1530 switch_bank(iobase, BANK1);
1531 outb(TIMER_IIR_500, iobase+FIR_TIMER_IIR);
1532 }
1533 else if (mtt == 2) /* 1 ms */
1534 {
1535 switch_bank(iobase, BANK1);
1536 outb(TIMER_IIR_1ms, iobase+FIR_TIMER_IIR);
1537 }
1538 else /* > 2ms -> 4ms */
1539 {
1540 switch_bank(iobase, BANK1);
1541 outb(TIMER_IIR_2ms, iobase+FIR_TIMER_IIR);
1542 }
1543
1544
1545 /* Start timer */
1546 outb(inb(iobase+FIR_CR) | CR_TIMER_EN, iobase+FIR_CR);
1547 self->io.direction = IO_XMIT;
1548
1549 /* Enable timer interrupt */
1550 self->ier = IER_TIMER;
1551 SetCOMInterrupts(self, TRUE);
1552
1553 /* Timer will take care of the rest */
1554 goto out;
1555 }
1556 else
1557 udelay(mtt);
1558 } // if (if (mtt > diff)
1559 }// if (mtt)
1560
1561 /* Enable EOM interrupt */
1562 self->ier = IER_EOM;
1563 SetCOMInterrupts(self, TRUE);
1564
1565 /* Transmit frame */
1566 ali_ircc_dma_xmit(self);
1567 } // if (self->tx_fifo.len == 1)
1568
1569 out:
1570
1571 /* Not busy transmitting anymore if window is not full */
1572 if (self->tx_fifo.free < MAX_TX_WINDOW)
1573 netif_wake_queue(self->netdev);
1574
1575 /* Restore bank register */
1576 switch_bank(iobase, BANK0);
1577
1578 dev->trans_start = jiffies;
1579 spin_unlock_irqrestore(&self->lock, flags);
1580 dev_kfree_skb(skb);
1581
1582 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
1583 return NETDEV_TX_OK;
1584 }
1585
1586
1587 static void ali_ircc_dma_xmit(struct ali_ircc_cb *self)
1588 {
1589 int iobase, tmp;
1590 unsigned char FIFO_OPTI, Hi, Lo;
1591
1592
1593 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ );
1594
1595 iobase = self->io.fir_base;
1596
1597 /* FIFO threshold , this method comes from NDIS5 code */
1598
1599 if(self->tx_fifo.queue[self->tx_fifo.ptr].len < TX_FIFO_Threshold)
1600 FIFO_OPTI = self->tx_fifo.queue[self->tx_fifo.ptr].len-1;
1601 else
1602 FIFO_OPTI = TX_FIFO_Threshold;
1603
1604 /* Disable DMA */
1605 switch_bank(iobase, BANK1);
1606 outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR);
1607
1608 self->io.direction = IO_XMIT;
1609
1610 irda_setup_dma(self->io.dma,
1611 ((u8 *)self->tx_fifo.queue[self->tx_fifo.ptr].start -
1612 self->tx_buff.head) + self->tx_buff_dma,
1613 self->tx_fifo.queue[self->tx_fifo.ptr].len,
1614 DMA_TX_MODE);
1615
1616 /* Reset Tx FIFO */
1617 switch_bank(iobase, BANK0);
1618 outb(LCR_A_FIFO_RESET, iobase+FIR_LCR_A);
1619
1620 /* Set Tx FIFO threshold */
1621 if (self->fifo_opti_buf!=FIFO_OPTI)
1622 {
1623 switch_bank(iobase, BANK1);
1624 outb(FIFO_OPTI, iobase+FIR_FIFO_TR) ;
1625 self->fifo_opti_buf=FIFO_OPTI;
1626 }
1627
1628 /* Set Tx DMA threshold */
1629 switch_bank(iobase, BANK1);
1630 outb(TX_DMA_Threshold, iobase+FIR_DMA_TR);
1631
1632 /* Set max Tx frame size */
1633 Hi = (self->tx_fifo.queue[self->tx_fifo.ptr].len >> 8) & 0x0f;
1634 Lo = self->tx_fifo.queue[self->tx_fifo.ptr].len & 0xff;
1635 switch_bank(iobase, BANK2);
1636 outb(Hi, iobase+FIR_TX_DSR_HI);
1637 outb(Lo, iobase+FIR_TX_DSR_LO);
1638
1639 /* Disable SIP , Disable Brick Wall (we don't support in TX mode), Change to TX mode */
1640 switch_bank(iobase, BANK0);
1641 tmp = inb(iobase+FIR_LCR_B);
1642 tmp &= ~0x20; // Disable SIP
1643 outb(((unsigned char)(tmp & 0x3f) | LCR_B_TX_MODE) & ~LCR_B_BW, iobase+FIR_LCR_B);
1644 IRDA_DEBUG(1, "%s(), ******* Change to TX mode: FIR_LCR_B = 0x%x ******* \n", __func__ , inb(iobase+FIR_LCR_B));
1645
1646 outb(0, iobase+FIR_LSR);
1647
1648 /* Enable DMA and Burst Mode */
1649 switch_bank(iobase, BANK1);
1650 outb(inb(iobase+FIR_CR) | CR_DMA_EN | CR_DMA_BURST, iobase+FIR_CR);
1651
1652 switch_bank(iobase, BANK0);
1653
1654 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
1655 }
1656
1657 static int ali_ircc_dma_xmit_complete(struct ali_ircc_cb *self)
1658 {
1659 int iobase;
1660 int ret = TRUE;
1661
1662 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ );
1663
1664 iobase = self->io.fir_base;
1665
1666 /* Disable DMA */
1667 switch_bank(iobase, BANK1);
1668 outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR);
1669
1670 /* Check for underrun! */
1671 switch_bank(iobase, BANK0);
1672 if((inb(iobase+FIR_LSR) & LSR_FRAME_ABORT) == LSR_FRAME_ABORT)
1673
1674 {
1675 IRDA_ERROR("%s(), ********* LSR_FRAME_ABORT *********\n", __func__);
1676 self->netdev->stats.tx_errors++;
1677 self->netdev->stats.tx_fifo_errors++;
1678 }
1679 else
1680 {
1681 self->netdev->stats.tx_packets++;
1682 }
1683
1684 /* Check if we need to change the speed */
1685 if (self->new_speed)
1686 {
1687 ali_ircc_change_speed(self, self->new_speed);
1688 self->new_speed = 0;
1689 }
1690
1691 /* Finished with this frame, so prepare for next */
1692 self->tx_fifo.ptr++;
1693 self->tx_fifo.len--;
1694
1695 /* Any frames to be sent back-to-back? */
1696 if (self->tx_fifo.len)
1697 {
1698 ali_ircc_dma_xmit(self);
1699
1700 /* Not finished yet! */
1701 ret = FALSE;
1702 }
1703 else
1704 { /* Reset Tx FIFO info */
1705 self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0;
1706 self->tx_fifo.tail = self->tx_buff.head;
1707 }
1708
1709 /* Make sure we have room for more frames */
1710 if (self->tx_fifo.free < MAX_TX_WINDOW) {
1711 /* Not busy transmitting anymore */
1712 /* Tell the network layer, that we can accept more frames */
1713 netif_wake_queue(self->netdev);
1714 }
1715
1716 switch_bank(iobase, BANK0);
1717
1718 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
1719 return ret;
1720 }
1721
1722 /*
1723 * Function ali_ircc_dma_receive (self)
1724 *
1725 * Get ready for receiving a frame. The device will initiate a DMA
1726 * if it starts to receive a frame.
1727 *
1728 */
1729 static int ali_ircc_dma_receive(struct ali_ircc_cb *self)
1730 {
1731 int iobase, tmp;
1732
1733 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ );
1734
1735 iobase = self->io.fir_base;
1736
1737 /* Reset Tx FIFO info */
1738 self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0;
1739 self->tx_fifo.tail = self->tx_buff.head;
1740
1741 /* Disable DMA */
1742 switch_bank(iobase, BANK1);
1743 outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR);
1744
1745 /* Reset Message Count */
1746 switch_bank(iobase, BANK0);
1747 outb(0x07, iobase+FIR_LSR);
1748
1749 self->rcvFramesOverflow = FALSE;
1750
1751 self->LineStatus = inb(iobase+FIR_LSR) ;
1752
1753 /* Reset Rx FIFO info */
1754 self->io.direction = IO_RECV;
1755 self->rx_buff.data = self->rx_buff.head;
1756
1757 /* Reset Rx FIFO */
1758 // switch_bank(iobase, BANK0);
1759 outb(LCR_A_FIFO_RESET, iobase+FIR_LCR_A);
1760
1761 self->st_fifo.len = self->st_fifo.pending_bytes = 0;
1762 self->st_fifo.tail = self->st_fifo.head = 0;
1763
1764 irda_setup_dma(self->io.dma, self->rx_buff_dma, self->rx_buff.truesize,
1765 DMA_RX_MODE);
1766
1767 /* Set Receive Mode,Brick Wall */
1768 //switch_bank(iobase, BANK0);
1769 tmp = inb(iobase+FIR_LCR_B);
1770 outb((unsigned char)(tmp &0x3f) | LCR_B_RX_MODE | LCR_B_BW , iobase + FIR_LCR_B); // 2000/12/1 05:16PM
1771 IRDA_DEBUG(1, "%s(), *** Change To RX mode: FIR_LCR_B = 0x%x *** \n", __func__ , inb(iobase+FIR_LCR_B));
1772
1773 /* Set Rx Threshold */
1774 switch_bank(iobase, BANK1);
1775 outb(RX_FIFO_Threshold, iobase+FIR_FIFO_TR);
1776 outb(RX_DMA_Threshold, iobase+FIR_DMA_TR);
1777
1778 /* Enable DMA and Burst Mode */
1779 // switch_bank(iobase, BANK1);
1780 outb(CR_DMA_EN | CR_DMA_BURST, iobase+FIR_CR);
1781
1782 switch_bank(iobase, BANK0);
1783 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
1784 return 0;
1785 }
1786
1787 static int ali_ircc_dma_receive_complete(struct ali_ircc_cb *self)
1788 {
1789 struct st_fifo *st_fifo;
1790 struct sk_buff *skb;
1791 __u8 status, MessageCount;
1792 int len, i, iobase, val;
1793
1794 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ );
1795
1796 st_fifo = &self->st_fifo;
1797 iobase = self->io.fir_base;
1798
1799 switch_bank(iobase, BANK0);
1800 MessageCount = inb(iobase+ FIR_LSR)&0x07;
1801
1802 if (MessageCount > 0)
1803 IRDA_DEBUG(0, "%s(), Messsage count = %d,\n", __func__ , MessageCount);
1804
1805 for (i=0; i<=MessageCount; i++)
1806 {
1807 /* Bank 0 */
1808 switch_bank(iobase, BANK0);
1809 status = inb(iobase+FIR_LSR);
1810
1811 switch_bank(iobase, BANK2);
1812 len = inb(iobase+FIR_RX_DSR_HI) & 0x0f;
1813 len = len << 8;
1814 len |= inb(iobase+FIR_RX_DSR_LO);
1815
1816 IRDA_DEBUG(1, "%s(), RX Length = 0x%.2x,\n", __func__ , len);
1817 IRDA_DEBUG(1, "%s(), RX Status = 0x%.2x,\n", __func__ , status);
1818
1819 if (st_fifo->tail >= MAX_RX_WINDOW) {
1820 IRDA_DEBUG(0, "%s(), window is full!\n", __func__ );
1821 continue;
1822 }
1823
1824 st_fifo->entries[st_fifo->tail].status = status;
1825 st_fifo->entries[st_fifo->tail].len = len;
1826 st_fifo->pending_bytes += len;
1827 st_fifo->tail++;
1828 st_fifo->len++;
1829 }
1830
1831 for (i=0; i<=MessageCount; i++)
1832 {
1833 /* Get first entry */
1834 status = st_fifo->entries[st_fifo->head].status;
1835 len = st_fifo->entries[st_fifo->head].len;
1836 st_fifo->pending_bytes -= len;
1837 st_fifo->head++;
1838 st_fifo->len--;
1839
1840 /* Check for errors */
1841 if ((status & 0xd8) || self->rcvFramesOverflow || (len==0))
1842 {
1843 IRDA_DEBUG(0,"%s(), ************* RX Errors ************ \n", __func__ );
1844
1845 /* Skip frame */
1846 self->netdev->stats.rx_errors++;
1847
1848 self->rx_buff.data += len;
1849
1850 if (status & LSR_FIFO_UR)
1851 {
1852 self->netdev->stats.rx_frame_errors++;
1853 IRDA_DEBUG(0,"%s(), ************* FIFO Errors ************ \n", __func__ );
1854 }
1855 if (status & LSR_FRAME_ERROR)
1856 {
1857 self->netdev->stats.rx_frame_errors++;
1858 IRDA_DEBUG(0,"%s(), ************* FRAME Errors ************ \n", __func__ );
1859 }
1860
1861 if (status & LSR_CRC_ERROR)
1862 {
1863 self->netdev->stats.rx_crc_errors++;
1864 IRDA_DEBUG(0,"%s(), ************* CRC Errors ************ \n", __func__ );
1865 }
1866
1867 if(self->rcvFramesOverflow)
1868 {
1869 self->netdev->stats.rx_frame_errors++;
1870 IRDA_DEBUG(0,"%s(), ************* Overran DMA buffer ************ \n", __func__ );
1871 }
1872 if(len == 0)
1873 {
1874 self->netdev->stats.rx_frame_errors++;
1875 IRDA_DEBUG(0,"%s(), ********** Receive Frame Size = 0 ********* \n", __func__ );
1876 }
1877 }
1878 else
1879 {
1880
1881 if (st_fifo->pending_bytes < 32)
1882 {
1883 switch_bank(iobase, BANK0);
1884 val = inb(iobase+FIR_BSR);
1885 if ((val& BSR_FIFO_NOT_EMPTY)== 0x80)
1886 {
1887 IRDA_DEBUG(0, "%s(), ************* BSR_FIFO_NOT_EMPTY ************ \n", __func__ );
1888
1889 /* Put this entry back in fifo */
1890 st_fifo->head--;
1891 st_fifo->len++;
1892 st_fifo->pending_bytes += len;
1893 st_fifo->entries[st_fifo->head].status = status;
1894 st_fifo->entries[st_fifo->head].len = len;
1895
1896 /*
1897 * DMA not finished yet, so try again
1898 * later, set timer value, resolution
1899 * 500 us
1900 */
1901
1902 switch_bank(iobase, BANK1);
1903 outb(TIMER_IIR_500, iobase+FIR_TIMER_IIR); // 2001/1/2 05:07PM
1904
1905 /* Enable Timer */
1906 outb(inb(iobase+FIR_CR) | CR_TIMER_EN, iobase+FIR_CR);
1907
1908 return FALSE; /* I'll be back! */
1909 }
1910 }
1911
1912 /*
1913 * Remember the time we received this frame, so we can
1914 * reduce the min turn time a bit since we will know
1915 * how much time we have used for protocol processing
1916 */
1917 do_gettimeofday(&self->stamp);
1918
1919 skb = dev_alloc_skb(len+1);
1920 if (skb == NULL)
1921 {
1922 IRDA_WARNING("%s(), memory squeeze, "
1923 "dropping frame.\n",
1924 __func__);
1925 self->netdev->stats.rx_dropped++;
1926
1927 return FALSE;
1928 }
1929
1930 /* Make sure IP header gets aligned */
1931 skb_reserve(skb, 1);
1932
1933 /* Copy frame without CRC, CRC is removed by hardware*/
1934 skb_put(skb, len);
1935 skb_copy_to_linear_data(skb, self->rx_buff.data, len);
1936
1937 /* Move to next frame */
1938 self->rx_buff.data += len;
1939 self->netdev->stats.rx_bytes += len;
1940 self->netdev->stats.rx_packets++;
1941
1942 skb->dev = self->netdev;
1943 skb_reset_mac_header(skb);
1944 skb->protocol = htons(ETH_P_IRDA);
1945 netif_rx(skb);
1946 }
1947 }
1948
1949 switch_bank(iobase, BANK0);
1950
1951 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
1952 return TRUE;
1953 }
1954
1955
1956
1957 /*
1958 * Function ali_ircc_sir_hard_xmit (skb, dev)
1959 *
1960 * Transmit the frame!
1961 *
1962 */
1963 static netdev_tx_t ali_ircc_sir_hard_xmit(struct sk_buff *skb,
1964 struct net_device *dev)
1965 {
1966 struct ali_ircc_cb *self;
1967 unsigned long flags;
1968 int iobase;
1969 __u32 speed;
1970
1971 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ );
1972
1973 IRDA_ASSERT(dev != NULL, return NETDEV_TX_OK;);
1974
1975 self = netdev_priv(dev);
1976 IRDA_ASSERT(self != NULL, return NETDEV_TX_OK;);
1977
1978 iobase = self->io.sir_base;
1979
1980 netif_stop_queue(dev);
1981
1982 /* Make sure tests *& speed change are atomic */
1983 spin_lock_irqsave(&self->lock, flags);
1984
1985 /* Note : you should make sure that speed changes are not going
1986 * to corrupt any outgoing frame. Look at nsc-ircc for the gory
1987 * details - Jean II */
1988
1989 /* Check if we need to change the speed */
1990 speed = irda_get_next_speed(skb);
1991 if ((speed != self->io.speed) && (speed != -1)) {
1992 /* Check for empty frame */
1993 if (!skb->len) {
1994 ali_ircc_change_speed(self, speed);
1995 dev->trans_start = jiffies;
1996 spin_unlock_irqrestore(&self->lock, flags);
1997 dev_kfree_skb(skb);
1998 return NETDEV_TX_OK;
1999 } else
2000 self->new_speed = speed;
2001 }
2002
2003 /* Init tx buffer */
2004 self->tx_buff.data = self->tx_buff.head;
2005
2006 /* Copy skb to tx_buff while wrapping, stuffing and making CRC */
2007 self->tx_buff.len = async_wrap_skb(skb, self->tx_buff.data,
2008 self->tx_buff.truesize);
2009
2010 self->netdev->stats.tx_bytes += self->tx_buff.len;
2011
2012 /* Turn on transmit finished interrupt. Will fire immediately! */
2013 outb(UART_IER_THRI, iobase+UART_IER);
2014
2015 dev->trans_start = jiffies;
2016 spin_unlock_irqrestore(&self->lock, flags);
2017
2018 dev_kfree_skb(skb);
2019
2020 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
2021
2022 return NETDEV_TX_OK;
2023 }
2024
2025
2026 /*
2027 * Function ali_ircc_net_ioctl (dev, rq, cmd)
2028 *
2029 * Process IOCTL commands for this device
2030 *
2031 */
2032 static int ali_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2033 {
2034 struct if_irda_req *irq = (struct if_irda_req *) rq;
2035 struct ali_ircc_cb *self;
2036 unsigned long flags;
2037 int ret = 0;
2038
2039 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ );
2040
2041 IRDA_ASSERT(dev != NULL, return -1;);
2042
2043 self = netdev_priv(dev);
2044
2045 IRDA_ASSERT(self != NULL, return -1;);
2046
2047 IRDA_DEBUG(2, "%s(), %s, (cmd=0x%X)\n", __func__ , dev->name, cmd);
2048
2049 switch (cmd) {
2050 case SIOCSBANDWIDTH: /* Set bandwidth */
2051 IRDA_DEBUG(1, "%s(), SIOCSBANDWIDTH\n", __func__ );
2052 /*
2053 * This function will also be used by IrLAP to change the
2054 * speed, so we still must allow for speed change within
2055 * interrupt context.
2056 */
2057 if (!in_interrupt() && !capable(CAP_NET_ADMIN))
2058 return -EPERM;
2059
2060 spin_lock_irqsave(&self->lock, flags);
2061 ali_ircc_change_speed(self, irq->ifr_baudrate);
2062 spin_unlock_irqrestore(&self->lock, flags);
2063 break;
2064 case SIOCSMEDIABUSY: /* Set media busy */
2065 IRDA_DEBUG(1, "%s(), SIOCSMEDIABUSY\n", __func__ );
2066 if (!capable(CAP_NET_ADMIN))
2067 return -EPERM;
2068 irda_device_set_media_busy(self->netdev, TRUE);
2069 break;
2070 case SIOCGRECEIVING: /* Check if we are receiving right now */
2071 IRDA_DEBUG(2, "%s(), SIOCGRECEIVING\n", __func__ );
2072 /* This is protected */
2073 irq->ifr_receiving = ali_ircc_is_receiving(self);
2074 break;
2075 default:
2076 ret = -EOPNOTSUPP;
2077 }
2078
2079 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
2080
2081 return ret;
2082 }
2083
2084 /*
2085 * Function ali_ircc_is_receiving (self)
2086 *
2087 * Return TRUE is we are currently receiving a frame
2088 *
2089 */
2090 static int ali_ircc_is_receiving(struct ali_ircc_cb *self)
2091 {
2092 unsigned long flags;
2093 int status = FALSE;
2094 int iobase;
2095
2096 IRDA_DEBUG(2, "%s(), ---------------- Start -----------------\n", __func__ );
2097
2098 IRDA_ASSERT(self != NULL, return FALSE;);
2099
2100 spin_lock_irqsave(&self->lock, flags);
2101
2102 if (self->io.speed > 115200)
2103 {
2104 iobase = self->io.fir_base;
2105
2106 switch_bank(iobase, BANK1);
2107 if((inb(iobase+FIR_FIFO_FR) & 0x3f) != 0)
2108 {
2109 /* We are receiving something */
2110 IRDA_DEBUG(1, "%s(), We are receiving something\n", __func__ );
2111 status = TRUE;
2112 }
2113 switch_bank(iobase, BANK0);
2114 }
2115 else
2116 {
2117 status = (self->rx_buff.state != OUTSIDE_FRAME);
2118 }
2119
2120 spin_unlock_irqrestore(&self->lock, flags);
2121
2122 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
2123
2124 return status;
2125 }
2126
2127 static int ali_ircc_suspend(struct platform_device *dev, pm_message_t state)
2128 {
2129 struct ali_ircc_cb *self = platform_get_drvdata(dev);
2130
2131 IRDA_MESSAGE("%s, Suspending\n", ALI_IRCC_DRIVER_NAME);
2132
2133 if (self->io.suspended)
2134 return 0;
2135
2136 ali_ircc_net_close(self->netdev);
2137
2138 self->io.suspended = 1;
2139
2140 return 0;
2141 }
2142
2143 static int ali_ircc_resume(struct platform_device *dev)
2144 {
2145 struct ali_ircc_cb *self = platform_get_drvdata(dev);
2146
2147 if (!self->io.suspended)
2148 return 0;
2149
2150 ali_ircc_net_open(self->netdev);
2151
2152 IRDA_MESSAGE("%s, Waking up\n", ALI_IRCC_DRIVER_NAME);
2153
2154 self->io.suspended = 0;
2155
2156 return 0;
2157 }
2158
2159 /* ALi Chip Function */
2160
2161 static void SetCOMInterrupts(struct ali_ircc_cb *self , unsigned char enable)
2162 {
2163
2164 unsigned char newMask;
2165
2166 int iobase = self->io.fir_base; /* or sir_base */
2167
2168 IRDA_DEBUG(2, "%s(), -------- Start -------- ( Enable = %d )\n", __func__ , enable);
2169
2170 /* Enable the interrupt which we wish to */
2171 if (enable){
2172 if (self->io.direction == IO_XMIT)
2173 {
2174 if (self->io.speed > 115200) /* FIR, MIR */
2175 {
2176 newMask = self->ier;
2177 }
2178 else /* SIR */
2179 {
2180 newMask = UART_IER_THRI | UART_IER_RDI;
2181 }
2182 }
2183 else {
2184 if (self->io.speed > 115200) /* FIR, MIR */
2185 {
2186 newMask = self->ier;
2187 }
2188 else /* SIR */
2189 {
2190 newMask = UART_IER_RDI;
2191 }
2192 }
2193 }
2194 else /* Disable all the interrupts */
2195 {
2196 newMask = 0x00;
2197
2198 }
2199
2200 //SIR and FIR has different registers
2201 if (self->io.speed > 115200)
2202 {
2203 switch_bank(iobase, BANK0);
2204 outb(newMask, iobase+FIR_IER);
2205 }
2206 else
2207 outb(newMask, iobase+UART_IER);
2208
2209 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
2210 }
2211
2212 static void SIR2FIR(int iobase)
2213 {
2214 //unsigned char tmp;
2215
2216 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ );
2217
2218 /* Already protected (change_speed() or setup()), no need to lock.
2219 * Jean II */
2220
2221 outb(0x28, iobase+UART_MCR);
2222 outb(0x68, iobase+UART_MCR);
2223 outb(0x88, iobase+UART_MCR);
2224
2225 outb(0x60, iobase+FIR_MCR); /* Master Reset */
2226 outb(0x20, iobase+FIR_MCR); /* Master Interrupt Enable */
2227
2228 //tmp = inb(iobase+FIR_LCR_B); /* SIP enable */
2229 //tmp |= 0x20;
2230 //outb(tmp, iobase+FIR_LCR_B);
2231
2232 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
2233 }
2234
2235 static void FIR2SIR(int iobase)
2236 {
2237 unsigned char val;
2238
2239 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ );
2240
2241 /* Already protected (change_speed() or setup()), no need to lock.
2242 * Jean II */
2243
2244 outb(0x20, iobase+FIR_MCR); /* IRQ to low */
2245 outb(0x00, iobase+UART_IER);
2246
2247 outb(0xA0, iobase+FIR_MCR); /* Don't set master reset */
2248 outb(0x00, iobase+UART_FCR);
2249 outb(0x07, iobase+UART_FCR);
2250
2251 val = inb(iobase+UART_RX);
2252 val = inb(iobase+UART_LSR);
2253 val = inb(iobase+UART_MSR);
2254
2255 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
2256 }
2257
2258 MODULE_AUTHOR("Benjamin Kong <benjamin_kong@ali.com.tw>");
2259 MODULE_DESCRIPTION("ALi FIR Controller Driver");
2260 MODULE_LICENSE("GPL");
2261 MODULE_ALIAS("platform:" ALI_IRCC_DRIVER_NAME);
2262
2263
2264 module_param_array(io, int, NULL, 0);
2265 MODULE_PARM_DESC(io, "Base I/O addresses");
2266 module_param_array(irq, int, NULL, 0);
2267 MODULE_PARM_DESC(irq, "IRQ lines");
2268 module_param_array(dma, int, NULL, 0);
2269 MODULE_PARM_DESC(dma, "DMA channels");
2270
2271 module_init(ali_ircc_init);
2272 module_exit(ali_ircc_cleanup);
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