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[PATCH] alpha: Fix getxpid on alpha so it works for threads
[linux-2.6/zen-sources.git] / drivers / net / irda / ali-ircc.c
blob2e7882eb7d6fb02a1d980c2467e638f317a1c915
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
38 #include <asm/io.h>
39 #include <asm/dma.h>
40 #include <asm/byteorder.h>
41
42 #include <linux/pm.h>
43 #include <linux/pm_legacy.h>
44
45 #include <net/irda/wrapper.h>
46 #include <net/irda/irda.h>
47 #include <net/irda/irda_device.h>
48
49 #include "ali-ircc.h"
50
51 #define CHIP_IO_EXTENT 8
52 #define BROKEN_DONGLE_ID
53
54 static char *driver_name = "ali-ircc";
55
56 /* Module parameters */
57 static int qos_mtt_bits = 0x07; /* 1 ms or more */
58
59 /* Use BIOS settions by default, but user may supply module parameters */
60 static unsigned int io[] = { ~0, ~0, ~0, ~0 };
61 static unsigned int irq[] = { 0, 0, 0, 0 };
62 static unsigned int dma[] = { 0, 0, 0, 0 };
63
64 static int ali_ircc_probe_53(ali_chip_t *chip, chipio_t *info);
65 static int ali_ircc_init_43(ali_chip_t *chip, chipio_t *info);
66 static int ali_ircc_init_53(ali_chip_t *chip, chipio_t *info);
67
68 /* These are the currently known ALi sourth-bridge chipsets, the only one difference
69 * is that M1543C doesn't support HP HDSL-3600
70 */
71 static ali_chip_t chips[] =
72 {
73 { "M1543", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x43, ali_ircc_probe_53, ali_ircc_init_43 },
74 { "M1535", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x53, ali_ircc_probe_53, ali_ircc_init_53 },
75 { "M1563", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x63, ali_ircc_probe_53, ali_ircc_init_53 },
76 { NULL }
77 };
78
79 /* Max 4 instances for now */
80 static struct ali_ircc_cb *dev_self[] = { NULL, NULL, NULL, NULL };
81
82 /* Dongle Types */
83 static char *dongle_types[] = {
84 "TFDS6000",
85 "HP HSDL-3600",
86 "HP HSDL-1100",
87 "No dongle connected",
88 };
89
90 /* Some prototypes */
91 static int ali_ircc_open(int i, chipio_t *info);
92
93 static int ali_ircc_close(struct ali_ircc_cb *self);
94
95 static int ali_ircc_setup(chipio_t *info);
96 static int ali_ircc_is_receiving(struct ali_ircc_cb *self);
97 static int ali_ircc_net_open(struct net_device *dev);
98 static int ali_ircc_net_close(struct net_device *dev);
99 static int ali_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
100 static int ali_ircc_pmproc(struct pm_dev *dev, pm_request_t rqst, void *data);
101 static void ali_ircc_change_speed(struct ali_ircc_cb *self, __u32 baud);
102 static void ali_ircc_suspend(struct ali_ircc_cb *self);
103 static void ali_ircc_wakeup(struct ali_ircc_cb *self);
104 static struct net_device_stats *ali_ircc_net_get_stats(struct net_device *dev);
105
106 /* SIR function */
107 static int ali_ircc_sir_hard_xmit(struct sk_buff *skb, struct net_device *dev);
108 static irqreturn_t ali_ircc_sir_interrupt(struct ali_ircc_cb *self);
109 static void ali_ircc_sir_receive(struct ali_ircc_cb *self);
110 static void ali_ircc_sir_write_wakeup(struct ali_ircc_cb *self);
111 static int ali_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len);
112 static void ali_ircc_sir_change_speed(struct ali_ircc_cb *priv, __u32 speed);
113
114 /* FIR function */
115 static int ali_ircc_fir_hard_xmit(struct sk_buff *skb, struct net_device *dev);
116 static void ali_ircc_fir_change_speed(struct ali_ircc_cb *priv, __u32 speed);
117 static irqreturn_t ali_ircc_fir_interrupt(struct ali_ircc_cb *self);
118 static int ali_ircc_dma_receive(struct ali_ircc_cb *self);
119 static int ali_ircc_dma_receive_complete(struct ali_ircc_cb *self);
120 static int ali_ircc_dma_xmit_complete(struct ali_ircc_cb *self);
121 static void ali_ircc_dma_xmit(struct ali_ircc_cb *self);
122
123 /* My Function */
124 static int ali_ircc_read_dongle_id (int i, chipio_t *info);
125 static void ali_ircc_change_dongle_speed(struct ali_ircc_cb *priv, int speed);
126
127 /* ALi chip function */
128 static void SIR2FIR(int iobase);
129 static void FIR2SIR(int iobase);
130 static void SetCOMInterrupts(struct ali_ircc_cb *self , unsigned char enable);
131
132 /*
133 * Function ali_ircc_init ()
134 *
135 * Initialize chip. Find out whay kinds of chips we are dealing with
136 * and their configuation registers address
137 */
138 static int __init ali_ircc_init(void)
139 {
140 ali_chip_t *chip;
141 chipio_t info;
142 int ret = -ENODEV;
143 int cfg, cfg_base;
144 int reg, revision;
145 int i = 0;
146
147 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__);
148
149 /* Probe for all the ALi chipsets we know about */
150 for (chip= chips; chip->name; chip++, i++)
151 {
152 IRDA_DEBUG(2, "%s(), Probing for %s ...\n", __FUNCTION__, chip->name);
153
154 /* Try all config registers for this chip */
155 for (cfg=0; cfg<2; cfg++)
156 {
157 cfg_base = chip->cfg[cfg];
158 if (!cfg_base)
159 continue;
160
161 memset(&info, 0, sizeof(chipio_t));
162 info.cfg_base = cfg_base;
163 info.fir_base = io[i];
164 info.dma = dma[i];
165 info.irq = irq[i];
166
167
168 /* Enter Configuration */
169 outb(chip->entr1, cfg_base);
170 outb(chip->entr2, cfg_base);
171
172 /* Select Logical Device 5 Registers (UART2) */
173 outb(0x07, cfg_base);
174 outb(0x05, cfg_base+1);
175
176 /* Read Chip Identification Register */
177 outb(chip->cid_index, cfg_base);
178 reg = inb(cfg_base+1);
179
180 if (reg == chip->cid_value)
181 {
182 IRDA_DEBUG(2, "%s(), Chip found at 0x%03x\n", __FUNCTION__, cfg_base);
183
184 outb(0x1F, cfg_base);
185 revision = inb(cfg_base+1);
186 IRDA_DEBUG(2, "%s(), Found %s chip, revision=%d\n", __FUNCTION__,
187 chip->name, revision);
188
189 /*
190 * If the user supplies the base address, then
191 * we init the chip, if not we probe the values
192 * set by the BIOS
193 */
194 if (io[i] < 2000)
195 {
196 chip->init(chip, &info);
197 }
198 else
199 {
200 chip->probe(chip, &info);
201 }
202
203 if (ali_ircc_open(i, &info) == 0)
204 ret = 0;
205 i++;
206 }
207 else
208 {
209 IRDA_DEBUG(2, "%s(), No %s chip at 0x%03x\n", __FUNCTION__, chip->name, cfg_base);
210 }
211 /* Exit configuration */
212 outb(0xbb, cfg_base);
213 }
214 }
215
216 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __FUNCTION__);
217 return ret;
218 }
219
220 /*
221 * Function ali_ircc_cleanup ()
222 *
223 * Close all configured chips
224 *
225 */
226 static void __exit ali_ircc_cleanup(void)
227 {
228 int i;
229
230 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__);
231
232 pm_unregister_all(ali_ircc_pmproc);
233
234 for (i=0; i < 4; i++) {
235 if (dev_self[i])
236 ali_ircc_close(dev_self[i]);
237 }
238
239 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __FUNCTION__);
240 }
241
242 /*
243 * Function ali_ircc_open (int i, chipio_t *inf)
244 *
245 * Open driver instance
246 *
247 */
248 static int ali_ircc_open(int i, chipio_t *info)
249 {
250 struct net_device *dev;
251 struct ali_ircc_cb *self;
252 struct pm_dev *pmdev;
253 int dongle_id;
254 int err;
255
256 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__);
257
258 /* Set FIR FIFO and DMA Threshold */
259 if ((ali_ircc_setup(info)) == -1)
260 return -1;
261
262 dev = alloc_irdadev(sizeof(*self));
263 if (dev == NULL) {
264 IRDA_ERROR("%s(), can't allocate memory for control block!\n",
265 __FUNCTION__);
266 return -ENOMEM;
267 }
268
269 self = dev->priv;
270 self->netdev = dev;
271 spin_lock_init(&self->lock);
272
273 /* Need to store self somewhere */
274 dev_self[i] = self;
275 self->index = i;
276
277 /* Initialize IO */
278 self->io.cfg_base = info->cfg_base; /* In ali_ircc_probe_53 assign */
279 self->io.fir_base = info->fir_base; /* info->sir_base = info->fir_base */
280 self->io.sir_base = info->sir_base; /* ALi SIR and FIR use the same address */
281 self->io.irq = info->irq;
282 self->io.fir_ext = CHIP_IO_EXTENT;
283 self->io.dma = info->dma;
284 self->io.fifo_size = 16; /* SIR: 16, FIR: 32 Benjamin 2000/11/1 */
285
286 /* Reserve the ioports that we need */
287 if (!request_region(self->io.fir_base, self->io.fir_ext, driver_name)) {
288 IRDA_WARNING("%s(), can't get iobase of 0x%03x\n", __FUNCTION__,
289 self->io.fir_base);
290 err = -ENODEV;
291 goto err_out1;
292 }
293
294 /* Initialize QoS for this device */
295 irda_init_max_qos_capabilies(&self->qos);
296
297 /* The only value we must override it the baudrate */
298 self->qos.baud_rate.bits = IR_9600|IR_19200|IR_38400|IR_57600|
299 IR_115200|IR_576000|IR_1152000|(IR_4000000 << 8); // benjamin 2000/11/8 05:27PM
300
301 self->qos.min_turn_time.bits = qos_mtt_bits;
302
303 irda_qos_bits_to_value(&self->qos);
304
305 /* Max DMA buffer size needed = (data_size + 6) * (window_size) + 6; */
306 self->rx_buff.truesize = 14384;
307 self->tx_buff.truesize = 14384;
308
309 /* Allocate memory if needed */
310 self->rx_buff.head =
311 dma_alloc_coherent(NULL, self->rx_buff.truesize,
312 &self->rx_buff_dma, GFP_KERNEL);
313 if (self->rx_buff.head == NULL) {
314 err = -ENOMEM;
315 goto err_out2;
316 }
317 memset(self->rx_buff.head, 0, self->rx_buff.truesize);
318
319 self->tx_buff.head =
320 dma_alloc_coherent(NULL, self->tx_buff.truesize,
321 &self->tx_buff_dma, GFP_KERNEL);
322 if (self->tx_buff.head == NULL) {
323 err = -ENOMEM;
324 goto err_out3;
325 }
326 memset(self->tx_buff.head, 0, self->tx_buff.truesize);
327
328 self->rx_buff.in_frame = FALSE;
329 self->rx_buff.state = OUTSIDE_FRAME;
330 self->tx_buff.data = self->tx_buff.head;
331 self->rx_buff.data = self->rx_buff.head;
332
333 /* Reset Tx queue info */
334 self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0;
335 self->tx_fifo.tail = self->tx_buff.head;
336
337
338 /* Keep track of module usage */
339 SET_MODULE_OWNER(dev);
340
341 /* Override the network functions we need to use */
342 dev->hard_start_xmit = ali_ircc_sir_hard_xmit;
343 dev->open = ali_ircc_net_open;
344 dev->stop = ali_ircc_net_close;
345 dev->do_ioctl = ali_ircc_net_ioctl;
346 dev->get_stats = ali_ircc_net_get_stats;
347
348 err = register_netdev(dev);
349 if (err) {
350 IRDA_ERROR("%s(), register_netdev() failed!\n", __FUNCTION__);
351 goto err_out4;
352 }
353 IRDA_MESSAGE("IrDA: Registered device %s\n", dev->name);
354
355 /* Check dongle id */
356 dongle_id = ali_ircc_read_dongle_id(i, info);
357 IRDA_MESSAGE("%s(), %s, Found dongle: %s\n", __FUNCTION__, driver_name, dongle_types[dongle_id]);
358
359 self->io.dongle_id = dongle_id;
360
361 pmdev = pm_register(PM_SYS_DEV, PM_SYS_IRDA, ali_ircc_pmproc);
362 if (pmdev)
363 pmdev->data = self;
364
365 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __FUNCTION__);
366
367 return 0;
368
369 err_out4:
370 dma_free_coherent(NULL, self->tx_buff.truesize,
371 self->tx_buff.head, self->tx_buff_dma);
372 err_out3:
373 dma_free_coherent(NULL, self->rx_buff.truesize,
374 self->rx_buff.head, self->rx_buff_dma);
375 err_out2:
376 release_region(self->io.fir_base, self->io.fir_ext);
377 err_out1:
378 dev_self[i] = NULL;
379 free_netdev(dev);
380 return err;
381 }
382
383
384 /*
385 * Function ali_ircc_close (self)
386 *
387 * Close driver instance
388 *
389 */
390 static int __exit ali_ircc_close(struct ali_ircc_cb *self)
391 {
392 int iobase;
393
394 IRDA_DEBUG(4, "%s(), ---------------- Start ----------------\n", __FUNCTION__);
395
396 IRDA_ASSERT(self != NULL, return -1;);
397
398 iobase = self->io.fir_base;
399
400 /* Remove netdevice */
401 unregister_netdev(self->netdev);
402
403 /* Release the PORT that this driver is using */
404 IRDA_DEBUG(4, "%s(), Releasing Region %03x\n", __FUNCTION__, self->io.fir_base);
405 release_region(self->io.fir_base, self->io.fir_ext);
406
407 if (self->tx_buff.head)
408 dma_free_coherent(NULL, self->tx_buff.truesize,
409 self->tx_buff.head, self->tx_buff_dma);
410
411 if (self->rx_buff.head)
412 dma_free_coherent(NULL, self->rx_buff.truesize,
413 self->rx_buff.head, self->rx_buff_dma);
414
415 dev_self[self->index] = NULL;
416 free_netdev(self->netdev);
417
418 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __FUNCTION__);
419
420 return 0;
421 }
422
423 /*
424 * Function ali_ircc_init_43 (chip, info)
425 *
426 * Initialize the ALi M1543 chip.
427 */
428 static int ali_ircc_init_43(ali_chip_t *chip, chipio_t *info)
429 {
430 /* All controller information like I/O address, DMA channel, IRQ
431 * are set by BIOS
432 */
433
434 return 0;
435 }
436
437 /*
438 * Function ali_ircc_init_53 (chip, info)
439 *
440 * Initialize the ALi M1535 chip.
441 */
442 static int ali_ircc_init_53(ali_chip_t *chip, chipio_t *info)
443 {
444 /* All controller information like I/O address, DMA channel, IRQ
445 * are set by BIOS
446 */
447
448 return 0;
449 }
450
451 /*
452 * Function ali_ircc_probe_53 (chip, info)
453 *
454 * Probes for the ALi M1535D or M1535
455 */
456 static int ali_ircc_probe_53(ali_chip_t *chip, chipio_t *info)
457 {
458 int cfg_base = info->cfg_base;
459 int hi, low, reg;
460
461 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__);
462
463 /* Enter Configuration */
464 outb(chip->entr1, cfg_base);
465 outb(chip->entr2, cfg_base);
466
467 /* Select Logical Device 5 Registers (UART2) */
468 outb(0x07, cfg_base);
469 outb(0x05, cfg_base+1);
470
471 /* Read address control register */
472 outb(0x60, cfg_base);
473 hi = inb(cfg_base+1);
474 outb(0x61, cfg_base);
475 low = inb(cfg_base+1);
476 info->fir_base = (hi<<8) + low;
477
478 info->sir_base = info->fir_base;
479
480 IRDA_DEBUG(2, "%s(), probing fir_base=0x%03x\n", __FUNCTION__, info->fir_base);
481
482 /* Read IRQ control register */
483 outb(0x70, cfg_base);
484 reg = inb(cfg_base+1);
485 info->irq = reg & 0x0f;
486 IRDA_DEBUG(2, "%s(), probing irq=%d\n", __FUNCTION__, info->irq);
487
488 /* Read DMA channel */
489 outb(0x74, cfg_base);
490 reg = inb(cfg_base+1);
491 info->dma = reg & 0x07;
492
493 if(info->dma == 0x04)
494 IRDA_WARNING("%s(), No DMA channel assigned !\n", __FUNCTION__);
495 else
496 IRDA_DEBUG(2, "%s(), probing dma=%d\n", __FUNCTION__, info->dma);
497
498 /* Read Enabled Status */
499 outb(0x30, cfg_base);
500 reg = inb(cfg_base+1);
501 info->enabled = (reg & 0x80) && (reg & 0x01);
502 IRDA_DEBUG(2, "%s(), probing enabled=%d\n", __FUNCTION__, info->enabled);
503
504 /* Read Power Status */
505 outb(0x22, cfg_base);
506 reg = inb(cfg_base+1);
507 info->suspended = (reg & 0x20);
508 IRDA_DEBUG(2, "%s(), probing suspended=%d\n", __FUNCTION__, info->suspended);
509
510 /* Exit configuration */
511 outb(0xbb, cfg_base);
512
513 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __FUNCTION__);
514
515 return 0;
516 }
517
518 /*
519 * Function ali_ircc_setup (info)
520 *
521 * Set FIR FIFO and DMA Threshold
522 * Returns non-negative on success.
523 *
524 */
525 static int ali_ircc_setup(chipio_t *info)
526 {
527 unsigned char tmp;
528 int version;
529 int iobase = info->fir_base;
530
531 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__);
532
533 /* Locking comments :
534 * Most operations here need to be protected. We are called before
535 * the device instance is created in ali_ircc_open(), therefore
536 * nobody can bother us - Jean II */
537
538 /* Switch to FIR space */
539 SIR2FIR(iobase);
540
541 /* Master Reset */
542 outb(0x40, iobase+FIR_MCR); // benjamin 2000/11/30 11:45AM
543
544 /* Read FIR ID Version Register */
545 switch_bank(iobase, BANK3);
546 version = inb(iobase+FIR_ID_VR);
547
548 /* Should be 0x00 in the M1535/M1535D */
549 if(version != 0x00)
550 {
551 IRDA_ERROR("%s, Wrong chip version %02x\n", driver_name, version);
552 return -1;
553 }
554
555 // IRDA_MESSAGE("%s, Found chip at base=0x%03x\n", driver_name, info->cfg_base);
556
557 /* Set FIR FIFO Threshold Register */
558 switch_bank(iobase, BANK1);
559 outb(RX_FIFO_Threshold, iobase+FIR_FIFO_TR);
560
561 /* Set FIR DMA Threshold Register */
562 outb(RX_DMA_Threshold, iobase+FIR_DMA_TR);
563
564 /* CRC enable */
565 switch_bank(iobase, BANK2);
566 outb(inb(iobase+FIR_IRDA_CR) | IRDA_CR_CRC, iobase+FIR_IRDA_CR);
567
568 /* NDIS driver set TX Length here BANK2 Alias 3, Alias4*/
569
570 /* Switch to Bank 0 */
571 switch_bank(iobase, BANK0);
572
573 tmp = inb(iobase+FIR_LCR_B);
574 tmp &=~0x20; // disable SIP
575 tmp |= 0x80; // these two steps make RX mode
576 tmp &= 0xbf;
577 outb(tmp, iobase+FIR_LCR_B);
578
579 /* Disable Interrupt */
580 outb(0x00, iobase+FIR_IER);
581
582
583 /* Switch to SIR space */
584 FIR2SIR(iobase);
585
586 IRDA_MESSAGE("%s, driver loaded (Benjamin Kong)\n", driver_name);
587
588 /* Enable receive interrupts */
589 // outb(UART_IER_RDI, iobase+UART_IER); //benjamin 2000/11/23 01:25PM
590 // Turn on the interrupts in ali_ircc_net_open
591
592 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__);
593
594 return 0;
595 }
596
597 /*
598 * Function ali_ircc_read_dongle_id (int index, info)
599 *
600 * Try to read dongle indentification. This procedure needs to be executed
601 * once after power-on/reset. It also needs to be used whenever you suspect
602 * that the user may have plugged/unplugged the IrDA Dongle.
603 */
604 static int ali_ircc_read_dongle_id (int i, chipio_t *info)
605 {
606 int dongle_id, reg;
607 int cfg_base = info->cfg_base;
608
609 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__);
610
611 /* Enter Configuration */
612 outb(chips[i].entr1, cfg_base);
613 outb(chips[i].entr2, cfg_base);
614
615 /* Select Logical Device 5 Registers (UART2) */
616 outb(0x07, cfg_base);
617 outb(0x05, cfg_base+1);
618
619 /* Read Dongle ID */
620 outb(0xf0, cfg_base);
621 reg = inb(cfg_base+1);
622 dongle_id = ((reg>>6)&0x02) | ((reg>>5)&0x01);
623 IRDA_DEBUG(2, "%s(), probing dongle_id=%d, dongle_types=%s\n", __FUNCTION__,
624 dongle_id, dongle_types[dongle_id]);
625
626 /* Exit configuration */
627 outb(0xbb, cfg_base);
628
629 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__);
630
631 return dongle_id;
632 }
633
634 /*
635 * Function ali_ircc_interrupt (irq, dev_id, regs)
636 *
637 * An interrupt from the chip has arrived. Time to do some work
638 *
639 */
640 static irqreturn_t ali_ircc_interrupt(int irq, void *dev_id,
641 struct pt_regs *regs)
642 {
643 struct net_device *dev = (struct net_device *) dev_id;
644 struct ali_ircc_cb *self;
645 int ret;
646
647 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__);
648
649 if (!dev) {
650 IRDA_WARNING("%s: irq %d for unknown device.\n", driver_name, irq);
651 return IRQ_NONE;
652 }
653
654 self = (struct ali_ircc_cb *) dev->priv;
655
656 spin_lock(&self->lock);
657
658 /* Dispatch interrupt handler for the current speed */
659 if (self->io.speed > 115200)
660 ret = ali_ircc_fir_interrupt(self);
661 else
662 ret = ali_ircc_sir_interrupt(self);
663
664 spin_unlock(&self->lock);
665
666 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__);
667 return ret;
668 }
669 /*
670 * Function ali_ircc_fir_interrupt(irq, struct ali_ircc_cb *self)
671 *
672 * Handle MIR/FIR interrupt
673 *
674 */
675 static irqreturn_t ali_ircc_fir_interrupt(struct ali_ircc_cb *self)
676 {
677 __u8 eir, OldMessageCount;
678 int iobase, tmp;
679
680 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __FUNCTION__);
681
682 iobase = self->io.fir_base;
683
684 switch_bank(iobase, BANK0);
685 self->InterruptID = inb(iobase+FIR_IIR);
686 self->BusStatus = inb(iobase+FIR_BSR);
687
688 OldMessageCount = (self->LineStatus + 1) & 0x07;
689 self->LineStatus = inb(iobase+FIR_LSR);
690 //self->ier = inb(iobase+FIR_IER); 2000/12/1 04:32PM
691 eir = self->InterruptID & self->ier; /* Mask out the interesting ones */
692
693 IRDA_DEBUG(1, "%s(), self->InterruptID = %x\n", __FUNCTION__,self->InterruptID);
694 IRDA_DEBUG(1, "%s(), self->LineStatus = %x\n", __FUNCTION__,self->LineStatus);
695 IRDA_DEBUG(1, "%s(), self->ier = %x\n", __FUNCTION__,self->ier);
696 IRDA_DEBUG(1, "%s(), eir = %x\n", __FUNCTION__,eir);
697
698 /* Disable interrupts */
699 SetCOMInterrupts(self, FALSE);
700
701 /* Tx or Rx Interrupt */
702
703 if (eir & IIR_EOM)
704 {
705 if (self->io.direction == IO_XMIT) /* TX */
706 {
707 IRDA_DEBUG(1, "%s(), ******* IIR_EOM (Tx) *******\n", __FUNCTION__);
708
709 if(ali_ircc_dma_xmit_complete(self))
710 {
711 if (irda_device_txqueue_empty(self->netdev))
712 {
713 /* Prepare for receive */
714 ali_ircc_dma_receive(self);
715 self->ier = IER_EOM;
716 }
717 }
718 else
719 {
720 self->ier = IER_EOM;
721 }
722
723 }
724 else /* RX */
725 {
726 IRDA_DEBUG(1, "%s(), ******* IIR_EOM (Rx) *******\n", __FUNCTION__);
727
728 if(OldMessageCount > ((self->LineStatus+1) & 0x07))
729 {
730 self->rcvFramesOverflow = TRUE;
731 IRDA_DEBUG(1, "%s(), ******* self->rcvFramesOverflow = TRUE ******** \n", __FUNCTION__);
732 }
733
734 if (ali_ircc_dma_receive_complete(self))
735 {
736 IRDA_DEBUG(1, "%s(), ******* receive complete ******** \n", __FUNCTION__);
737
738 self->ier = IER_EOM;
739 }
740 else
741 {
742 IRDA_DEBUG(1, "%s(), ******* Not receive complete ******** \n", __FUNCTION__);
743
744 self->ier = IER_EOM | IER_TIMER;
745 }
746
747 }
748 }
749 /* Timer Interrupt */
750 else if (eir & IIR_TIMER)
751 {
752 if(OldMessageCount > ((self->LineStatus+1) & 0x07))
753 {
754 self->rcvFramesOverflow = TRUE;
755 IRDA_DEBUG(1, "%s(), ******* self->rcvFramesOverflow = TRUE ******* \n", __FUNCTION__);
756 }
757 /* Disable Timer */
758 switch_bank(iobase, BANK1);
759 tmp = inb(iobase+FIR_CR);
760 outb( tmp& ~CR_TIMER_EN, iobase+FIR_CR);
761
762 /* Check if this is a Tx timer interrupt */
763 if (self->io.direction == IO_XMIT)
764 {
765 ali_ircc_dma_xmit(self);
766
767 /* Interrupt on EOM */
768 self->ier = IER_EOM;
769
770 }
771 else /* Rx */
772 {
773 if(ali_ircc_dma_receive_complete(self))
774 {
775 self->ier = IER_EOM;
776 }
777 else
778 {
779 self->ier = IER_EOM | IER_TIMER;
780 }
781 }
782 }
783
784 /* Restore Interrupt */
785 SetCOMInterrupts(self, TRUE);
786
787 IRDA_DEBUG(1, "%s(), ----------------- End ---------------\n", __FUNCTION__);
788 return IRQ_RETVAL(eir);
789 }
790
791 /*
792 * Function ali_ircc_sir_interrupt (irq, self, eir)
793 *
794 * Handle SIR interrupt
795 *
796 */
797 static irqreturn_t ali_ircc_sir_interrupt(struct ali_ircc_cb *self)
798 {
799 int iobase;
800 int iir, lsr;
801
802 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__);
803
804 iobase = self->io.sir_base;
805
806 iir = inb(iobase+UART_IIR) & UART_IIR_ID;
807 if (iir) {
808 /* Clear interrupt */
809 lsr = inb(iobase+UART_LSR);
810
811 IRDA_DEBUG(4, "%s(), iir=%02x, lsr=%02x, iobase=%#x\n", __FUNCTION__,
812 iir, lsr, iobase);
813
814 switch (iir)
815 {
816 case UART_IIR_RLSI:
817 IRDA_DEBUG(2, "%s(), RLSI\n", __FUNCTION__);
818 break;
819 case UART_IIR_RDI:
820 /* Receive interrupt */
821 ali_ircc_sir_receive(self);
822 break;
823 case UART_IIR_THRI:
824 if (lsr & UART_LSR_THRE)
825 {
826 /* Transmitter ready for data */
827 ali_ircc_sir_write_wakeup(self);
828 }
829 break;
830 default:
831 IRDA_DEBUG(0, "%s(), unhandled IIR=%#x\n", __FUNCTION__, iir);
832 break;
833 }
834
835 }
836
837
838 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__);
839
840 return IRQ_RETVAL(iir);
841 }
842
843
844 /*
845 * Function ali_ircc_sir_receive (self)
846 *
847 * Receive one frame from the infrared port
848 *
849 */
850 static void ali_ircc_sir_receive(struct ali_ircc_cb *self)
851 {
852 int boguscount = 0;
853 int iobase;
854
855 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__);
856 IRDA_ASSERT(self != NULL, return;);
857
858 iobase = self->io.sir_base;
859
860 /*
861 * Receive all characters in Rx FIFO, unwrap and unstuff them.
862 * async_unwrap_char will deliver all found frames
863 */
864 do {
865 async_unwrap_char(self->netdev, &self->stats, &self->rx_buff,
866 inb(iobase+UART_RX));
867
868 /* Make sure we don't stay here too long */
869 if (boguscount++ > 32) {
870 IRDA_DEBUG(2,"%s(), breaking!\n", __FUNCTION__);
871 break;
872 }
873 } while (inb(iobase+UART_LSR) & UART_LSR_DR);
874
875 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
876 }
877
878 /*
879 * Function ali_ircc_sir_write_wakeup (tty)
880 *
881 * Called by the driver when there's room for more data. If we have
882 * more packets to send, we send them here.
883 *
884 */
885 static void ali_ircc_sir_write_wakeup(struct ali_ircc_cb *self)
886 {
887 int actual = 0;
888 int iobase;
889
890 IRDA_ASSERT(self != NULL, return;);
891
892 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__ );
893
894 iobase = self->io.sir_base;
895
896 /* Finished with frame? */
897 if (self->tx_buff.len > 0)
898 {
899 /* Write data left in transmit buffer */
900 actual = ali_ircc_sir_write(iobase, self->io.fifo_size,
901 self->tx_buff.data, self->tx_buff.len);
902 self->tx_buff.data += actual;
903 self->tx_buff.len -= actual;
904 }
905 else
906 {
907 if (self->new_speed)
908 {
909 /* We must wait until all data are gone */
910 while(!(inb(iobase+UART_LSR) & UART_LSR_TEMT))
911 IRDA_DEBUG(1, "%s(), UART_LSR_THRE\n", __FUNCTION__ );
912
913 IRDA_DEBUG(1, "%s(), Changing speed! self->new_speed = %d\n", __FUNCTION__ , self->new_speed);
914 ali_ircc_change_speed(self, self->new_speed);
915 self->new_speed = 0;
916
917 // benjamin 2000/11/10 06:32PM
918 if (self->io.speed > 115200)
919 {
920 IRDA_DEBUG(2, "%s(), ali_ircc_change_speed from UART_LSR_TEMT \n", __FUNCTION__ );
921
922 self->ier = IER_EOM;
923 // SetCOMInterrupts(self, TRUE);
924 return;
925 }
926 }
927 else
928 {
929 netif_wake_queue(self->netdev);
930 }
931
932 self->stats.tx_packets++;
933
934 /* Turn on receive interrupts */
935 outb(UART_IER_RDI, iobase+UART_IER);
936 }
937
938 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
939 }
940
941 static void ali_ircc_change_speed(struct ali_ircc_cb *self, __u32 baud)
942 {
943 struct net_device *dev = self->netdev;
944 int iobase;
945
946 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __FUNCTION__ );
947
948 IRDA_DEBUG(2, "%s(), setting speed = %d \n", __FUNCTION__ , baud);
949
950 /* This function *must* be called with irq off and spin-lock.
951 * - Jean II */
952
953 iobase = self->io.fir_base;
954
955 SetCOMInterrupts(self, FALSE); // 2000/11/24 11:43AM
956
957 /* Go to MIR, FIR Speed */
958 if (baud > 115200)
959 {
960
961
962 ali_ircc_fir_change_speed(self, baud);
963
964 /* Install FIR xmit handler*/
965 dev->hard_start_xmit = ali_ircc_fir_hard_xmit;
966
967 /* Enable Interuupt */
968 self->ier = IER_EOM; // benjamin 2000/11/20 07:24PM
969
970 /* Be ready for incomming frames */
971 ali_ircc_dma_receive(self); // benajmin 2000/11/8 07:46PM not complete
972 }
973 /* Go to SIR Speed */
974 else
975 {
976 ali_ircc_sir_change_speed(self, baud);
977
978 /* Install SIR xmit handler*/
979 dev->hard_start_xmit = ali_ircc_sir_hard_xmit;
980 }
981
982
983 SetCOMInterrupts(self, TRUE); // 2000/11/24 11:43AM
984
985 netif_wake_queue(self->netdev);
986
987 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
988 }
989
990 static void ali_ircc_fir_change_speed(struct ali_ircc_cb *priv, __u32 baud)
991 {
992
993 int iobase;
994 struct ali_ircc_cb *self = (struct ali_ircc_cb *) priv;
995 struct net_device *dev;
996
997 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __FUNCTION__ );
998
999 IRDA_ASSERT(self != NULL, return;);
1000
1001 dev = self->netdev;
1002 iobase = self->io.fir_base;
1003
1004 IRDA_DEBUG(1, "%s(), self->io.speed = %d, change to speed = %d\n", __FUNCTION__ ,self->io.speed,baud);
1005
1006 /* Come from SIR speed */
1007 if(self->io.speed <=115200)
1008 {
1009 SIR2FIR(iobase);
1010 }
1011
1012 /* Update accounting for new speed */
1013 self->io.speed = baud;
1014
1015 // Set Dongle Speed mode
1016 ali_ircc_change_dongle_speed(self, baud);
1017
1018 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
1019 }
1020
1021 /*
1022 * Function ali_sir_change_speed (self, speed)
1023 *
1024 * Set speed of IrDA port to specified baudrate
1025 *
1026 */
1027 static void ali_ircc_sir_change_speed(struct ali_ircc_cb *priv, __u32 speed)
1028 {
1029 struct ali_ircc_cb *self = (struct ali_ircc_cb *) priv;
1030 unsigned long flags;
1031 int iobase;
1032 int fcr; /* FIFO control reg */
1033 int lcr; /* Line control reg */
1034 int divisor;
1035
1036 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __FUNCTION__ );
1037
1038 IRDA_DEBUG(1, "%s(), Setting speed to: %d\n", __FUNCTION__ , speed);
1039
1040 IRDA_ASSERT(self != NULL, return;);
1041
1042 iobase = self->io.sir_base;
1043
1044 /* Come from MIR or FIR speed */
1045 if(self->io.speed >115200)
1046 {
1047 // Set Dongle Speed mode first
1048 ali_ircc_change_dongle_speed(self, speed);
1049
1050 FIR2SIR(iobase);
1051 }
1052
1053 // Clear Line and Auxiluary status registers 2000/11/24 11:47AM
1054
1055 inb(iobase+UART_LSR);
1056 inb(iobase+UART_SCR);
1057
1058 /* Update accounting for new speed */
1059 self->io.speed = speed;
1060
1061 spin_lock_irqsave(&self->lock, flags);
1062
1063 divisor = 115200/speed;
1064
1065 fcr = UART_FCR_ENABLE_FIFO;
1066
1067 /*
1068 * Use trigger level 1 to avoid 3 ms. timeout delay at 9600 bps, and
1069 * almost 1,7 ms at 19200 bps. At speeds above that we can just forget
1070 * about this timeout since it will always be fast enough.
1071 */
1072 if (self->io.speed < 38400)
1073 fcr |= UART_FCR_TRIGGER_1;
1074 else
1075 fcr |= UART_FCR_TRIGGER_14;
1076
1077 /* IrDA ports use 8N1 */
1078 lcr = UART_LCR_WLEN8;
1079
1080 outb(UART_LCR_DLAB | lcr, iobase+UART_LCR); /* Set DLAB */
1081 outb(divisor & 0xff, iobase+UART_DLL); /* Set speed */
1082 outb(divisor >> 8, iobase+UART_DLM);
1083 outb(lcr, iobase+UART_LCR); /* Set 8N1 */
1084 outb(fcr, iobase+UART_FCR); /* Enable FIFO's */
1085
1086 /* without this, the conection will be broken after come back from FIR speed,
1087 but with this, the SIR connection is harder to established */
1088 outb((UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2), iobase+UART_MCR);
1089
1090 spin_unlock_irqrestore(&self->lock, flags);
1091
1092 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
1093 }
1094
1095 static void ali_ircc_change_dongle_speed(struct ali_ircc_cb *priv, int speed)
1096 {
1097
1098 struct ali_ircc_cb *self = (struct ali_ircc_cb *) priv;
1099 int iobase,dongle_id;
1100 int tmp = 0;
1101
1102 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __FUNCTION__ );
1103
1104 iobase = self->io.fir_base; /* or iobase = self->io.sir_base; */
1105 dongle_id = self->io.dongle_id;
1106
1107 /* We are already locked, no need to do it again */
1108
1109 IRDA_DEBUG(1, "%s(), Set Speed for %s , Speed = %d\n", __FUNCTION__ , dongle_types[dongle_id], speed);
1110
1111 switch_bank(iobase, BANK2);
1112 tmp = inb(iobase+FIR_IRDA_CR);
1113
1114 /* IBM type dongle */
1115 if(dongle_id == 0)
1116 {
1117 if(speed == 4000000)
1118 {
1119 // __ __
1120 // SD/MODE __| |__ __
1121 // __ __
1122 // IRTX __ __| |__
1123 // T1 T2 T3 T4 T5
1124
1125 tmp &= ~IRDA_CR_HDLC; // HDLC=0
1126 tmp |= IRDA_CR_CRC; // CRC=1
1127
1128 switch_bank(iobase, BANK2);
1129 outb(tmp, iobase+FIR_IRDA_CR);
1130
1131 // T1 -> SD/MODE:0 IRTX:0
1132 tmp &= ~0x09;
1133 tmp |= 0x02;
1134 outb(tmp, iobase+FIR_IRDA_CR);
1135 udelay(2);
1136
1137 // T2 -> SD/MODE:1 IRTX:0
1138 tmp &= ~0x01;
1139 tmp |= 0x0a;
1140 outb(tmp, iobase+FIR_IRDA_CR);
1141 udelay(2);
1142
1143 // T3 -> SD/MODE:1 IRTX:1
1144 tmp |= 0x0b;
1145 outb(tmp, iobase+FIR_IRDA_CR);
1146 udelay(2);
1147
1148 // T4 -> SD/MODE:0 IRTX:1
1149 tmp &= ~0x08;
1150 tmp |= 0x03;
1151 outb(tmp, iobase+FIR_IRDA_CR);
1152 udelay(2);
1153
1154 // T5 -> SD/MODE:0 IRTX:0
1155 tmp &= ~0x09;
1156 tmp |= 0x02;
1157 outb(tmp, iobase+FIR_IRDA_CR);
1158 udelay(2);
1159
1160 // reset -> Normal TX output Signal
1161 outb(tmp & ~0x02, iobase+FIR_IRDA_CR);
1162 }
1163 else /* speed <=1152000 */
1164 {
1165 // __
1166 // SD/MODE __| |__
1167 //
1168 // IRTX ________
1169 // T1 T2 T3
1170
1171 /* MIR 115200, 57600 */
1172 if (speed==1152000)
1173 {
1174 tmp |= 0xA0; //HDLC=1, 1.152Mbps=1
1175 }
1176 else
1177 {
1178 tmp &=~0x80; //HDLC 0.576Mbps
1179 tmp |= 0x20; //HDLC=1,
1180 }
1181
1182 tmp |= IRDA_CR_CRC; // CRC=1
1183
1184 switch_bank(iobase, BANK2);
1185 outb(tmp, iobase+FIR_IRDA_CR);
1186
1187 /* MIR 115200, 57600 */
1188
1189 //switch_bank(iobase, BANK2);
1190 // T1 -> SD/MODE:0 IRTX:0
1191 tmp &= ~0x09;
1192 tmp |= 0x02;
1193 outb(tmp, iobase+FIR_IRDA_CR);
1194 udelay(2);
1195
1196 // T2 -> SD/MODE:1 IRTX:0
1197 tmp &= ~0x01;
1198 tmp |= 0x0a;
1199 outb(tmp, iobase+FIR_IRDA_CR);
1200
1201 // T3 -> SD/MODE:0 IRTX:0
1202 tmp &= ~0x09;
1203 tmp |= 0x02;
1204 outb(tmp, iobase+FIR_IRDA_CR);
1205 udelay(2);
1206
1207 // reset -> Normal TX output Signal
1208 outb(tmp & ~0x02, iobase+FIR_IRDA_CR);
1209 }
1210 }
1211 else if (dongle_id == 1) /* HP HDSL-3600 */
1212 {
1213 switch(speed)
1214 {
1215 case 4000000:
1216 tmp &= ~IRDA_CR_HDLC; // HDLC=0
1217 break;
1218
1219 case 1152000:
1220 tmp |= 0xA0; // HDLC=1, 1.152Mbps=1
1221 break;
1222
1223 case 576000:
1224 tmp &=~0x80; // HDLC 0.576Mbps
1225 tmp |= 0x20; // HDLC=1,
1226 break;
1227 }
1228
1229 tmp |= IRDA_CR_CRC; // CRC=1
1230
1231 switch_bank(iobase, BANK2);
1232 outb(tmp, iobase+FIR_IRDA_CR);
1233 }
1234 else /* HP HDSL-1100 */
1235 {
1236 if(speed <= 115200) /* SIR */
1237 {
1238
1239 tmp &= ~IRDA_CR_FIR_SIN; // HP sin select = 0
1240
1241 switch_bank(iobase, BANK2);
1242 outb(tmp, iobase+FIR_IRDA_CR);
1243 }
1244 else /* MIR FIR */
1245 {
1246
1247 switch(speed)
1248 {
1249 case 4000000:
1250 tmp &= ~IRDA_CR_HDLC; // HDLC=0
1251 break;
1252
1253 case 1152000:
1254 tmp |= 0xA0; // HDLC=1, 1.152Mbps=1
1255 break;
1256
1257 case 576000:
1258 tmp &=~0x80; // HDLC 0.576Mbps
1259 tmp |= 0x20; // HDLC=1,
1260 break;
1261 }
1262
1263 tmp |= IRDA_CR_CRC; // CRC=1
1264 tmp |= IRDA_CR_FIR_SIN; // HP sin select = 1
1265
1266 switch_bank(iobase, BANK2);
1267 outb(tmp, iobase+FIR_IRDA_CR);
1268 }
1269 }
1270
1271 switch_bank(iobase, BANK0);
1272
1273 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
1274 }
1275
1276 /*
1277 * Function ali_ircc_sir_write (driver)
1278 *
1279 * Fill Tx FIFO with transmit data
1280 *
1281 */
1282 static int ali_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len)
1283 {
1284 int actual = 0;
1285
1286 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__ );
1287
1288 /* Tx FIFO should be empty! */
1289 if (!(inb(iobase+UART_LSR) & UART_LSR_THRE)) {
1290 IRDA_DEBUG(0, "%s(), failed, fifo not empty!\n", __FUNCTION__ );
1291 return 0;
1292 }
1293
1294 /* Fill FIFO with current frame */
1295 while ((fifo_size-- > 0) && (actual < len)) {
1296 /* Transmit next byte */
1297 outb(buf[actual], iobase+UART_TX);
1298
1299 actual++;
1300 }
1301
1302 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
1303 return actual;
1304 }
1305
1306 /*
1307 * Function ali_ircc_net_open (dev)
1308 *
1309 * Start the device
1310 *
1311 */
1312 static int ali_ircc_net_open(struct net_device *dev)
1313 {
1314 struct ali_ircc_cb *self;
1315 int iobase;
1316 char hwname[32];
1317
1318 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__ );
1319
1320 IRDA_ASSERT(dev != NULL, return -1;);
1321
1322 self = (struct ali_ircc_cb *) dev->priv;
1323
1324 IRDA_ASSERT(self != NULL, return 0;);
1325
1326 iobase = self->io.fir_base;
1327
1328 /* Request IRQ and install Interrupt Handler */
1329 if (request_irq(self->io.irq, ali_ircc_interrupt, 0, dev->name, dev))
1330 {
1331 IRDA_WARNING("%s, unable to allocate irq=%d\n", driver_name,
1332 self->io.irq);
1333 return -EAGAIN;
1334 }
1335
1336 /*
1337 * Always allocate the DMA channel after the IRQ, and clean up on
1338 * failure.
1339 */
1340 if (request_dma(self->io.dma, dev->name)) {
1341 IRDA_WARNING("%s, unable to allocate dma=%d\n", driver_name,
1342 self->io.dma);
1343 free_irq(self->io.irq, self);
1344 return -EAGAIN;
1345 }
1346
1347 /* Turn on interrups */
1348 outb(UART_IER_RDI , iobase+UART_IER);
1349
1350 /* Ready to play! */
1351 netif_start_queue(dev); //benjamin by irport
1352
1353 /* Give self a hardware name */
1354 sprintf(hwname, "ALI-FIR @ 0x%03x", self->io.fir_base);
1355
1356 /*
1357 * Open new IrLAP layer instance, now that everything should be
1358 * initialized properly
1359 */
1360 self->irlap = irlap_open(dev, &self->qos, hwname);
1361
1362 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
1363
1364 return 0;
1365 }
1366
1367 /*
1368 * Function ali_ircc_net_close (dev)
1369 *
1370 * Stop the device
1371 *
1372 */
1373 static int ali_ircc_net_close(struct net_device *dev)
1374 {
1375
1376 struct ali_ircc_cb *self;
1377 //int iobase;
1378
1379 IRDA_DEBUG(4, "%s(), ---------------- Start ----------------\n", __FUNCTION__ );
1380
1381 IRDA_ASSERT(dev != NULL, return -1;);
1382
1383 self = (struct ali_ircc_cb *) dev->priv;
1384 IRDA_ASSERT(self != NULL, return 0;);
1385
1386 /* Stop device */
1387 netif_stop_queue(dev);
1388
1389 /* Stop and remove instance of IrLAP */
1390 if (self->irlap)
1391 irlap_close(self->irlap);
1392 self->irlap = NULL;
1393
1394 disable_dma(self->io.dma);
1395
1396 /* Disable interrupts */
1397 SetCOMInterrupts(self, FALSE);
1398
1399 free_irq(self->io.irq, dev);
1400 free_dma(self->io.dma);
1401
1402 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
1403
1404 return 0;
1405 }
1406
1407 /*
1408 * Function ali_ircc_fir_hard_xmit (skb, dev)
1409 *
1410 * Transmit the frame
1411 *
1412 */
1413 static int ali_ircc_fir_hard_xmit(struct sk_buff *skb, struct net_device *dev)
1414 {
1415 struct ali_ircc_cb *self;
1416 unsigned long flags;
1417 int iobase;
1418 __u32 speed;
1419 int mtt, diff;
1420
1421 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __FUNCTION__ );
1422
1423 self = (struct ali_ircc_cb *) dev->priv;
1424 iobase = self->io.fir_base;
1425
1426 netif_stop_queue(dev);
1427
1428 /* Make sure tests *& speed change are atomic */
1429 spin_lock_irqsave(&self->lock, flags);
1430
1431 /* Note : you should make sure that speed changes are not going
1432 * to corrupt any outgoing frame. Look at nsc-ircc for the gory
1433 * details - Jean II */
1434
1435 /* Check if we need to change the speed */
1436 speed = irda_get_next_speed(skb);
1437 if ((speed != self->io.speed) && (speed != -1)) {
1438 /* Check for empty frame */
1439 if (!skb->len) {
1440 ali_ircc_change_speed(self, speed);
1441 dev->trans_start = jiffies;
1442 spin_unlock_irqrestore(&self->lock, flags);
1443 dev_kfree_skb(skb);
1444 return 0;
1445 } else
1446 self->new_speed = speed;
1447 }
1448
1449 /* Register and copy this frame to DMA memory */
1450 self->tx_fifo.queue[self->tx_fifo.free].start = self->tx_fifo.tail;
1451 self->tx_fifo.queue[self->tx_fifo.free].len = skb->len;
1452 self->tx_fifo.tail += skb->len;
1453
1454 self->stats.tx_bytes += skb->len;
1455
1456 memcpy(self->tx_fifo.queue[self->tx_fifo.free].start, skb->data,
1457 skb->len);
1458
1459 self->tx_fifo.len++;
1460 self->tx_fifo.free++;
1461
1462 /* Start transmit only if there is currently no transmit going on */
1463 if (self->tx_fifo.len == 1)
1464 {
1465 /* Check if we must wait the min turn time or not */
1466 mtt = irda_get_mtt(skb);
1467
1468 if (mtt)
1469 {
1470 /* Check how much time we have used already */
1471 do_gettimeofday(&self->now);
1472
1473 diff = self->now.tv_usec - self->stamp.tv_usec;
1474 /* self->stamp is set from ali_ircc_dma_receive_complete() */
1475
1476 IRDA_DEBUG(1, "%s(), ******* diff = %d ******* \n", __FUNCTION__ , diff);
1477
1478 if (diff < 0)
1479 diff += 1000000;
1480
1481 /* Check if the mtt is larger than the time we have
1482 * already used by all the protocol processing
1483 */
1484 if (mtt > diff)
1485 {
1486 mtt -= diff;
1487
1488 /*
1489 * Use timer if delay larger than 1000 us, and
1490 * use udelay for smaller values which should
1491 * be acceptable
1492 */
1493 if (mtt > 500)
1494 {
1495 /* Adjust for timer resolution */
1496 mtt = (mtt+250) / 500; /* 4 discard, 5 get advanced, Let's round off */
1497
1498 IRDA_DEBUG(1, "%s(), ************** mtt = %d ***********\n", __FUNCTION__ , mtt);
1499
1500 /* Setup timer */
1501 if (mtt == 1) /* 500 us */
1502 {
1503 switch_bank(iobase, BANK1);
1504 outb(TIMER_IIR_500, iobase+FIR_TIMER_IIR);
1505 }
1506 else if (mtt == 2) /* 1 ms */
1507 {
1508 switch_bank(iobase, BANK1);
1509 outb(TIMER_IIR_1ms, iobase+FIR_TIMER_IIR);
1510 }
1511 else /* > 2ms -> 4ms */
1512 {
1513 switch_bank(iobase, BANK1);
1514 outb(TIMER_IIR_2ms, iobase+FIR_TIMER_IIR);
1515 }
1516
1517
1518 /* Start timer */
1519 outb(inb(iobase+FIR_CR) | CR_TIMER_EN, iobase+FIR_CR);
1520 self->io.direction = IO_XMIT;
1521
1522 /* Enable timer interrupt */
1523 self->ier = IER_TIMER;
1524 SetCOMInterrupts(self, TRUE);
1525
1526 /* Timer will take care of the rest */
1527 goto out;
1528 }
1529 else
1530 udelay(mtt);
1531 } // if (if (mtt > diff)
1532 }// if (mtt)
1533
1534 /* Enable EOM interrupt */
1535 self->ier = IER_EOM;
1536 SetCOMInterrupts(self, TRUE);
1537
1538 /* Transmit frame */
1539 ali_ircc_dma_xmit(self);
1540 } // if (self->tx_fifo.len == 1)
1541
1542 out:
1543
1544 /* Not busy transmitting anymore if window is not full */
1545 if (self->tx_fifo.free < MAX_TX_WINDOW)
1546 netif_wake_queue(self->netdev);
1547
1548 /* Restore bank register */
1549 switch_bank(iobase, BANK0);
1550
1551 dev->trans_start = jiffies;
1552 spin_unlock_irqrestore(&self->lock, flags);
1553 dev_kfree_skb(skb);
1554
1555 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
1556 return 0;
1557 }
1558
1559
1560 static void ali_ircc_dma_xmit(struct ali_ircc_cb *self)
1561 {
1562 int iobase, tmp;
1563 unsigned char FIFO_OPTI, Hi, Lo;
1564
1565
1566 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __FUNCTION__ );
1567
1568 iobase = self->io.fir_base;
1569
1570 /* FIFO threshold , this method comes from NDIS5 code */
1571
1572 if(self->tx_fifo.queue[self->tx_fifo.ptr].len < TX_FIFO_Threshold)
1573 FIFO_OPTI = self->tx_fifo.queue[self->tx_fifo.ptr].len-1;
1574 else
1575 FIFO_OPTI = TX_FIFO_Threshold;
1576
1577 /* Disable DMA */
1578 switch_bank(iobase, BANK1);
1579 outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR);
1580
1581 self->io.direction = IO_XMIT;
1582
1583 irda_setup_dma(self->io.dma,
1584 ((u8 *)self->tx_fifo.queue[self->tx_fifo.ptr].start -
1585 self->tx_buff.head) + self->tx_buff_dma,
1586 self->tx_fifo.queue[self->tx_fifo.ptr].len,
1587 DMA_TX_MODE);
1588
1589 /* Reset Tx FIFO */
1590 switch_bank(iobase, BANK0);
1591 outb(LCR_A_FIFO_RESET, iobase+FIR_LCR_A);
1592
1593 /* Set Tx FIFO threshold */
1594 if (self->fifo_opti_buf!=FIFO_OPTI)
1595 {
1596 switch_bank(iobase, BANK1);
1597 outb(FIFO_OPTI, iobase+FIR_FIFO_TR) ;
1598 self->fifo_opti_buf=FIFO_OPTI;
1599 }
1600
1601 /* Set Tx DMA threshold */
1602 switch_bank(iobase, BANK1);
1603 outb(TX_DMA_Threshold, iobase+FIR_DMA_TR);
1604
1605 /* Set max Tx frame size */
1606 Hi = (self->tx_fifo.queue[self->tx_fifo.ptr].len >> 8) & 0x0f;
1607 Lo = self->tx_fifo.queue[self->tx_fifo.ptr].len & 0xff;
1608 switch_bank(iobase, BANK2);
1609 outb(Hi, iobase+FIR_TX_DSR_HI);
1610 outb(Lo, iobase+FIR_TX_DSR_LO);
1611
1612 /* Disable SIP , Disable Brick Wall (we don't support in TX mode), Change to TX mode */
1613 switch_bank(iobase, BANK0);
1614 tmp = inb(iobase+FIR_LCR_B);
1615 tmp &= ~0x20; // Disable SIP
1616 outb(((unsigned char)(tmp & 0x3f) | LCR_B_TX_MODE) & ~LCR_B_BW, iobase+FIR_LCR_B);
1617 IRDA_DEBUG(1, "%s(), ******* Change to TX mode: FIR_LCR_B = 0x%x ******* \n", __FUNCTION__ , inb(iobase+FIR_LCR_B));
1618
1619 outb(0, iobase+FIR_LSR);
1620
1621 /* Enable DMA and Burst Mode */
1622 switch_bank(iobase, BANK1);
1623 outb(inb(iobase+FIR_CR) | CR_DMA_EN | CR_DMA_BURST, iobase+FIR_CR);
1624
1625 switch_bank(iobase, BANK0);
1626
1627 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
1628 }
1629
1630 static int ali_ircc_dma_xmit_complete(struct ali_ircc_cb *self)
1631 {
1632 int iobase;
1633 int ret = TRUE;
1634
1635 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __FUNCTION__ );
1636
1637 iobase = self->io.fir_base;
1638
1639 /* Disable DMA */
1640 switch_bank(iobase, BANK1);
1641 outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR);
1642
1643 /* Check for underrun! */
1644 switch_bank(iobase, BANK0);
1645 if((inb(iobase+FIR_LSR) & LSR_FRAME_ABORT) == LSR_FRAME_ABORT)
1646
1647 {
1648 IRDA_ERROR("%s(), ********* LSR_FRAME_ABORT *********\n", __FUNCTION__);
1649 self->stats.tx_errors++;
1650 self->stats.tx_fifo_errors++;
1651 }
1652 else
1653 {
1654 self->stats.tx_packets++;
1655 }
1656
1657 /* Check if we need to change the speed */
1658 if (self->new_speed)
1659 {
1660 ali_ircc_change_speed(self, self->new_speed);
1661 self->new_speed = 0;
1662 }
1663
1664 /* Finished with this frame, so prepare for next */
1665 self->tx_fifo.ptr++;
1666 self->tx_fifo.len--;
1667
1668 /* Any frames to be sent back-to-back? */
1669 if (self->tx_fifo.len)
1670 {
1671 ali_ircc_dma_xmit(self);
1672
1673 /* Not finished yet! */
1674 ret = FALSE;
1675 }
1676 else
1677 { /* Reset Tx FIFO info */
1678 self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0;
1679 self->tx_fifo.tail = self->tx_buff.head;
1680 }
1681
1682 /* Make sure we have room for more frames */
1683 if (self->tx_fifo.free < MAX_TX_WINDOW) {
1684 /* Not busy transmitting anymore */
1685 /* Tell the network layer, that we can accept more frames */
1686 netif_wake_queue(self->netdev);
1687 }
1688
1689 switch_bank(iobase, BANK0);
1690
1691 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
1692 return ret;
1693 }
1694
1695 /*
1696 * Function ali_ircc_dma_receive (self)
1697 *
1698 * Get ready for receiving a frame. The device will initiate a DMA
1699 * if it starts to receive a frame.
1700 *
1701 */
1702 static int ali_ircc_dma_receive(struct ali_ircc_cb *self)
1703 {
1704 int iobase, tmp;
1705
1706 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __FUNCTION__ );
1707
1708 iobase = self->io.fir_base;
1709
1710 /* Reset Tx FIFO info */
1711 self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0;
1712 self->tx_fifo.tail = self->tx_buff.head;
1713
1714 /* Disable DMA */
1715 switch_bank(iobase, BANK1);
1716 outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR);
1717
1718 /* Reset Message Count */
1719 switch_bank(iobase, BANK0);
1720 outb(0x07, iobase+FIR_LSR);
1721
1722 self->rcvFramesOverflow = FALSE;
1723
1724 self->LineStatus = inb(iobase+FIR_LSR) ;
1725
1726 /* Reset Rx FIFO info */
1727 self->io.direction = IO_RECV;
1728 self->rx_buff.data = self->rx_buff.head;
1729
1730 /* Reset Rx FIFO */
1731 // switch_bank(iobase, BANK0);
1732 outb(LCR_A_FIFO_RESET, iobase+FIR_LCR_A);
1733
1734 self->st_fifo.len = self->st_fifo.pending_bytes = 0;
1735 self->st_fifo.tail = self->st_fifo.head = 0;
1736
1737 irda_setup_dma(self->io.dma, self->rx_buff_dma, self->rx_buff.truesize,
1738 DMA_RX_MODE);
1739
1740 /* Set Receive Mode,Brick Wall */
1741 //switch_bank(iobase, BANK0);
1742 tmp = inb(iobase+FIR_LCR_B);
1743 outb((unsigned char)(tmp &0x3f) | LCR_B_RX_MODE | LCR_B_BW , iobase + FIR_LCR_B); // 2000/12/1 05:16PM
1744 IRDA_DEBUG(1, "%s(), *** Change To RX mode: FIR_LCR_B = 0x%x *** \n", __FUNCTION__ , inb(iobase+FIR_LCR_B));
1745
1746 /* Set Rx Threshold */
1747 switch_bank(iobase, BANK1);
1748 outb(RX_FIFO_Threshold, iobase+FIR_FIFO_TR);
1749 outb(RX_DMA_Threshold, iobase+FIR_DMA_TR);
1750
1751 /* Enable DMA and Burst Mode */
1752 // switch_bank(iobase, BANK1);
1753 outb(CR_DMA_EN | CR_DMA_BURST, iobase+FIR_CR);
1754
1755 switch_bank(iobase, BANK0);
1756 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
1757 return 0;
1758 }
1759
1760 static int ali_ircc_dma_receive_complete(struct ali_ircc_cb *self)
1761 {
1762 struct st_fifo *st_fifo;
1763 struct sk_buff *skb;
1764 __u8 status, MessageCount;
1765 int len, i, iobase, val;
1766
1767 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __FUNCTION__ );
1768
1769 st_fifo = &self->st_fifo;
1770 iobase = self->io.fir_base;
1771
1772 switch_bank(iobase, BANK0);
1773 MessageCount = inb(iobase+ FIR_LSR)&0x07;
1774
1775 if (MessageCount > 0)
1776 IRDA_DEBUG(0, "%s(), Messsage count = %d,\n", __FUNCTION__ , MessageCount);
1777
1778 for (i=0; i<=MessageCount; i++)
1779 {
1780 /* Bank 0 */
1781 switch_bank(iobase, BANK0);
1782 status = inb(iobase+FIR_LSR);
1783
1784 switch_bank(iobase, BANK2);
1785 len = inb(iobase+FIR_RX_DSR_HI) & 0x0f;
1786 len = len << 8;
1787 len |= inb(iobase+FIR_RX_DSR_LO);
1788
1789 IRDA_DEBUG(1, "%s(), RX Length = 0x%.2x,\n", __FUNCTION__ , len);
1790 IRDA_DEBUG(1, "%s(), RX Status = 0x%.2x,\n", __FUNCTION__ , status);
1791
1792 if (st_fifo->tail >= MAX_RX_WINDOW) {
1793 IRDA_DEBUG(0, "%s(), window is full!\n", __FUNCTION__ );
1794 continue;
1795 }
1796
1797 st_fifo->entries[st_fifo->tail].status = status;
1798 st_fifo->entries[st_fifo->tail].len = len;
1799 st_fifo->pending_bytes += len;
1800 st_fifo->tail++;
1801 st_fifo->len++;
1802 }
1803
1804 for (i=0; i<=MessageCount; i++)
1805 {
1806 /* Get first entry */
1807 status = st_fifo->entries[st_fifo->head].status;
1808 len = st_fifo->entries[st_fifo->head].len;
1809 st_fifo->pending_bytes -= len;
1810 st_fifo->head++;
1811 st_fifo->len--;
1812
1813 /* Check for errors */
1814 if ((status & 0xd8) || self->rcvFramesOverflow || (len==0))
1815 {
1816 IRDA_DEBUG(0,"%s(), ************* RX Errors ************ \n", __FUNCTION__ );
1817
1818 /* Skip frame */
1819 self->stats.rx_errors++;
1820
1821 self->rx_buff.data += len;
1822
1823 if (status & LSR_FIFO_UR)
1824 {
1825 self->stats.rx_frame_errors++;
1826 IRDA_DEBUG(0,"%s(), ************* FIFO Errors ************ \n", __FUNCTION__ );
1827 }
1828 if (status & LSR_FRAME_ERROR)
1829 {
1830 self->stats.rx_frame_errors++;
1831 IRDA_DEBUG(0,"%s(), ************* FRAME Errors ************ \n", __FUNCTION__ );
1832 }
1833
1834 if (status & LSR_CRC_ERROR)
1835 {
1836 self->stats.rx_crc_errors++;
1837 IRDA_DEBUG(0,"%s(), ************* CRC Errors ************ \n", __FUNCTION__ );
1838 }
1839
1840 if(self->rcvFramesOverflow)
1841 {
1842 self->stats.rx_frame_errors++;
1843 IRDA_DEBUG(0,"%s(), ************* Overran DMA buffer ************ \n", __FUNCTION__ );
1844 }
1845 if(len == 0)
1846 {
1847 self->stats.rx_frame_errors++;
1848 IRDA_DEBUG(0,"%s(), ********** Receive Frame Size = 0 ********* \n", __FUNCTION__ );
1849 }
1850 }
1851 else
1852 {
1853
1854 if (st_fifo->pending_bytes < 32)
1855 {
1856 switch_bank(iobase, BANK0);
1857 val = inb(iobase+FIR_BSR);
1858 if ((val& BSR_FIFO_NOT_EMPTY)== 0x80)
1859 {
1860 IRDA_DEBUG(0, "%s(), ************* BSR_FIFO_NOT_EMPTY ************ \n", __FUNCTION__ );
1861
1862 /* Put this entry back in fifo */
1863 st_fifo->head--;
1864 st_fifo->len++;
1865 st_fifo->pending_bytes += len;
1866 st_fifo->entries[st_fifo->head].status = status;
1867 st_fifo->entries[st_fifo->head].len = len;
1868
1869 /*
1870 * DMA not finished yet, so try again
1871 * later, set timer value, resolution
1872 * 500 us
1873 */
1874
1875 switch_bank(iobase, BANK1);
1876 outb(TIMER_IIR_500, iobase+FIR_TIMER_IIR); // 2001/1/2 05:07PM
1877
1878 /* Enable Timer */
1879 outb(inb(iobase+FIR_CR) | CR_TIMER_EN, iobase+FIR_CR);
1880
1881 return FALSE; /* I'll be back! */
1882 }
1883 }
1884
1885 /*
1886 * Remember the time we received this frame, so we can
1887 * reduce the min turn time a bit since we will know
1888 * how much time we have used for protocol processing
1889 */
1890 do_gettimeofday(&self->stamp);
1891
1892 skb = dev_alloc_skb(len+1);
1893 if (skb == NULL)
1894 {
1895 IRDA_WARNING("%s(), memory squeeze, "
1896 "dropping frame.\n",
1897 __FUNCTION__);
1898 self->stats.rx_dropped++;
1899
1900 return FALSE;
1901 }
1902
1903 /* Make sure IP header gets aligned */
1904 skb_reserve(skb, 1);
1905
1906 /* Copy frame without CRC, CRC is removed by hardware*/
1907 skb_put(skb, len);
1908 memcpy(skb->data, self->rx_buff.data, len);
1909
1910 /* Move to next frame */
1911 self->rx_buff.data += len;
1912 self->stats.rx_bytes += len;
1913 self->stats.rx_packets++;
1914
1915 skb->dev = self->netdev;
1916 skb->mac.raw = skb->data;
1917 skb->protocol = htons(ETH_P_IRDA);
1918 netif_rx(skb);
1919 self->netdev->last_rx = jiffies;
1920 }
1921 }
1922
1923 switch_bank(iobase, BANK0);
1924
1925 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
1926 return TRUE;
1927 }
1928
1929
1930
1931 /*
1932 * Function ali_ircc_sir_hard_xmit (skb, dev)
1933 *
1934 * Transmit the frame!
1935 *
1936 */
1937 static int ali_ircc_sir_hard_xmit(struct sk_buff *skb, struct net_device *dev)
1938 {
1939 struct ali_ircc_cb *self;
1940 unsigned long flags;
1941 int iobase;
1942 __u32 speed;
1943
1944 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__ );
1945
1946 IRDA_ASSERT(dev != NULL, return 0;);
1947
1948 self = (struct ali_ircc_cb *) dev->priv;
1949 IRDA_ASSERT(self != NULL, return 0;);
1950
1951 iobase = self->io.sir_base;
1952
1953 netif_stop_queue(dev);
1954
1955 /* Make sure tests *& speed change are atomic */
1956 spin_lock_irqsave(&self->lock, flags);
1957
1958 /* Note : you should make sure that speed changes are not going
1959 * to corrupt any outgoing frame. Look at nsc-ircc for the gory
1960 * details - Jean II */
1961
1962 /* Check if we need to change the speed */
1963 speed = irda_get_next_speed(skb);
1964 if ((speed != self->io.speed) && (speed != -1)) {
1965 /* Check for empty frame */
1966 if (!skb->len) {
1967 ali_ircc_change_speed(self, speed);
1968 dev->trans_start = jiffies;
1969 spin_unlock_irqrestore(&self->lock, flags);
1970 dev_kfree_skb(skb);
1971 return 0;
1972 } else
1973 self->new_speed = speed;
1974 }
1975
1976 /* Init tx buffer */
1977 self->tx_buff.data = self->tx_buff.head;
1978
1979 /* Copy skb to tx_buff while wrapping, stuffing and making CRC */
1980 self->tx_buff.len = async_wrap_skb(skb, self->tx_buff.data,
1981 self->tx_buff.truesize);
1982
1983 self->stats.tx_bytes += self->tx_buff.len;
1984
1985 /* Turn on transmit finished interrupt. Will fire immediately! */
1986 outb(UART_IER_THRI, iobase+UART_IER);
1987
1988 dev->trans_start = jiffies;
1989 spin_unlock_irqrestore(&self->lock, flags);
1990
1991 dev_kfree_skb(skb);
1992
1993 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
1994
1995 return 0;
1996 }
1997
1998
1999 /*
2000 * Function ali_ircc_net_ioctl (dev, rq, cmd)
2001 *
2002 * Process IOCTL commands for this device
2003 *
2004 */
2005 static int ali_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2006 {
2007 struct if_irda_req *irq = (struct if_irda_req *) rq;
2008 struct ali_ircc_cb *self;
2009 unsigned long flags;
2010 int ret = 0;
2011
2012 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__ );
2013
2014 IRDA_ASSERT(dev != NULL, return -1;);
2015
2016 self = dev->priv;
2017
2018 IRDA_ASSERT(self != NULL, return -1;);
2019
2020 IRDA_DEBUG(2, "%s(), %s, (cmd=0x%X)\n", __FUNCTION__ , dev->name, cmd);
2021
2022 switch (cmd) {
2023 case SIOCSBANDWIDTH: /* Set bandwidth */
2024 IRDA_DEBUG(1, "%s(), SIOCSBANDWIDTH\n", __FUNCTION__ );
2025 /*
2026 * This function will also be used by IrLAP to change the
2027 * speed, so we still must allow for speed change within
2028 * interrupt context.
2029 */
2030 if (!in_interrupt() && !capable(CAP_NET_ADMIN))
2031 return -EPERM;
2032
2033 spin_lock_irqsave(&self->lock, flags);
2034 ali_ircc_change_speed(self, irq->ifr_baudrate);
2035 spin_unlock_irqrestore(&self->lock, flags);
2036 break;
2037 case SIOCSMEDIABUSY: /* Set media busy */
2038 IRDA_DEBUG(1, "%s(), SIOCSMEDIABUSY\n", __FUNCTION__ );
2039 if (!capable(CAP_NET_ADMIN))
2040 return -EPERM;
2041 irda_device_set_media_busy(self->netdev, TRUE);
2042 break;
2043 case SIOCGRECEIVING: /* Check if we are receiving right now */
2044 IRDA_DEBUG(2, "%s(), SIOCGRECEIVING\n", __FUNCTION__ );
2045 /* This is protected */
2046 irq->ifr_receiving = ali_ircc_is_receiving(self);
2047 break;
2048 default:
2049 ret = -EOPNOTSUPP;
2050 }
2051
2052 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
2053
2054 return ret;
2055 }
2056
2057 /*
2058 * Function ali_ircc_is_receiving (self)
2059 *
2060 * Return TRUE is we are currently receiving a frame
2061 *
2062 */
2063 static int ali_ircc_is_receiving(struct ali_ircc_cb *self)
2064 {
2065 unsigned long flags;
2066 int status = FALSE;
2067 int iobase;
2068
2069 IRDA_DEBUG(2, "%s(), ---------------- Start -----------------\n", __FUNCTION__ );
2070
2071 IRDA_ASSERT(self != NULL, return FALSE;);
2072
2073 spin_lock_irqsave(&self->lock, flags);
2074
2075 if (self->io.speed > 115200)
2076 {
2077 iobase = self->io.fir_base;
2078
2079 switch_bank(iobase, BANK1);
2080 if((inb(iobase+FIR_FIFO_FR) & 0x3f) != 0)
2081 {
2082 /* We are receiving something */
2083 IRDA_DEBUG(1, "%s(), We are receiving something\n", __FUNCTION__ );
2084 status = TRUE;
2085 }
2086 switch_bank(iobase, BANK0);
2087 }
2088 else
2089 {
2090 status = (self->rx_buff.state != OUTSIDE_FRAME);
2091 }
2092
2093 spin_unlock_irqrestore(&self->lock, flags);
2094
2095 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
2096
2097 return status;
2098 }
2099
2100 static struct net_device_stats *ali_ircc_net_get_stats(struct net_device *dev)
2101 {
2102 struct ali_ircc_cb *self = (struct ali_ircc_cb *) dev->priv;
2103
2104 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__ );
2105
2106 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
2107
2108 return &self->stats;
2109 }
2110
2111 static void ali_ircc_suspend(struct ali_ircc_cb *self)
2112 {
2113 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__ );
2114
2115 IRDA_MESSAGE("%s, Suspending\n", driver_name);
2116
2117 if (self->io.suspended)
2118 return;
2119
2120 ali_ircc_net_close(self->netdev);
2121
2122 self->io.suspended = 1;
2123
2124 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
2125 }
2126
2127 static void ali_ircc_wakeup(struct ali_ircc_cb *self)
2128 {
2129 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__ );
2130
2131 if (!self->io.suspended)
2132 return;
2133
2134 ali_ircc_net_open(self->netdev);
2135
2136 IRDA_MESSAGE("%s, Waking up\n", driver_name);
2137
2138 self->io.suspended = 0;
2139
2140 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
2141 }
2142
2143 static int ali_ircc_pmproc(struct pm_dev *dev, pm_request_t rqst, void *data)
2144 {
2145 struct ali_ircc_cb *self = (struct ali_ircc_cb*) dev->data;
2146
2147 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__ );
2148
2149 if (self) {
2150 switch (rqst) {
2151 case PM_SUSPEND:
2152 ali_ircc_suspend(self);
2153 break;
2154 case PM_RESUME:
2155 ali_ircc_wakeup(self);
2156 break;
2157 }
2158 }
2159
2160 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
2161
2162 return 0;
2163 }
2164
2165
2166 /* ALi Chip Function */
2167
2168 static void SetCOMInterrupts(struct ali_ircc_cb *self , unsigned char enable)
2169 {
2170
2171 unsigned char newMask;
2172
2173 int iobase = self->io.fir_base; /* or sir_base */
2174
2175 IRDA_DEBUG(2, "%s(), -------- Start -------- ( Enable = %d )\n", __FUNCTION__ , enable);
2176
2177 /* Enable the interrupt which we wish to */
2178 if (enable){
2179 if (self->io.direction == IO_XMIT)
2180 {
2181 if (self->io.speed > 115200) /* FIR, MIR */
2182 {
2183 newMask = self->ier;
2184 }
2185 else /* SIR */
2186 {
2187 newMask = UART_IER_THRI | UART_IER_RDI;
2188 }
2189 }
2190 else {
2191 if (self->io.speed > 115200) /* FIR, MIR */
2192 {
2193 newMask = self->ier;
2194 }
2195 else /* SIR */
2196 {
2197 newMask = UART_IER_RDI;
2198 }
2199 }
2200 }
2201 else /* Disable all the interrupts */
2202 {
2203 newMask = 0x00;
2204
2205 }
2206
2207 //SIR and FIR has different registers
2208 if (self->io.speed > 115200)
2209 {
2210 switch_bank(iobase, BANK0);
2211 outb(newMask, iobase+FIR_IER);
2212 }
2213 else
2214 outb(newMask, iobase+UART_IER);
2215
2216 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
2217 }
2218
2219 static void SIR2FIR(int iobase)
2220 {
2221 //unsigned char tmp;
2222
2223 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __FUNCTION__ );
2224
2225 /* Already protected (change_speed() or setup()), no need to lock.
2226 * Jean II */
2227
2228 outb(0x28, iobase+UART_MCR);
2229 outb(0x68, iobase+UART_MCR);
2230 outb(0x88, iobase+UART_MCR);
2231
2232 outb(0x60, iobase+FIR_MCR); /* Master Reset */
2233 outb(0x20, iobase+FIR_MCR); /* Master Interrupt Enable */
2234
2235 //tmp = inb(iobase+FIR_LCR_B); /* SIP enable */
2236 //tmp |= 0x20;
2237 //outb(tmp, iobase+FIR_LCR_B);
2238
2239 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
2240 }
2241
2242 static void FIR2SIR(int iobase)
2243 {
2244 unsigned char val;
2245
2246 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __FUNCTION__ );
2247
2248 /* Already protected (change_speed() or setup()), no need to lock.
2249 * Jean II */
2250
2251 outb(0x20, iobase+FIR_MCR); /* IRQ to low */
2252 outb(0x00, iobase+UART_IER);
2253
2254 outb(0xA0, iobase+FIR_MCR); /* Don't set master reset */
2255 outb(0x00, iobase+UART_FCR);
2256 outb(0x07, iobase+UART_FCR);
2257
2258 val = inb(iobase+UART_RX);
2259 val = inb(iobase+UART_LSR);
2260 val = inb(iobase+UART_MSR);
2261
2262 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ );
2263 }
2264
2265 MODULE_AUTHOR("Benjamin Kong <benjamin_kong@ali.com.tw>");
2266 MODULE_DESCRIPTION("ALi FIR Controller Driver");
2267 MODULE_LICENSE("GPL");
2268
2269
2270 module_param_array(io, int, NULL, 0);
2271 MODULE_PARM_DESC(io, "Base I/O addresses");
2272 module_param_array(irq, int, NULL, 0);
2273 MODULE_PARM_DESC(irq, "IRQ lines");
2274 module_param_array(dma, int, NULL, 0);
2275 MODULE_PARM_DESC(dma, "DMA channels");
2276
2277 module_init(ali_ircc_init);
2278 module_exit(ali_ircc_cleanup);
Stable & featurefull patchset based on Linus's git branch