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