Fix typo: configuation => configuration
[linux-2.6.git] / drivers / net / irda / ali-ircc.c
1 /*********************************************************************
2  *                
3  * Filename:      ali-ircc.h
4  * Version:       0.5
5  * Description:   Driver for the ALI M1535D and M1543C FIR Controller
6  * Status:        Experimental.
7  * Author:        Benjamin Kong <benjamin_kong@ali.com.tw>
8  * Created at:    2000/10/16 03:46PM
9  * Modified at:   2001/1/3 02:55PM
10  * Modified by:   Benjamin Kong <benjamin_kong@ali.com.tw>
11  * Modified at:   2003/11/6 and support for ALi south-bridge chipsets M1563
12  * Modified by:   Clear Zhang <clear_zhang@ali.com.tw>
13  * 
14  *     Copyright (c) 2000 Benjamin Kong <benjamin_kong@ali.com.tw>
15  *     All Rights Reserved
16  *      
17  *     This program is free software; you can redistribute it and/or 
18  *     modify it under the terms of the GNU General Public License as 
19  *     published by the Free Software Foundation; either version 2 of 
20  *     the License, or (at your option) any later version.
21  *  
22  ********************************************************************/
23
24 #include <linux/module.h>
25 #include <linux/gfp.h>
26
27 #include <linux/kernel.h>
28 #include <linux/types.h>
29 #include <linux/skbuff.h>
30 #include <linux/netdevice.h>
31 #include <linux/ioport.h>
32 #include <linux/delay.h>
33 #include <linux/init.h>
34 #include <linux/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 configuration 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);