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