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