ali-ircc.c revision 6518bbb803fe02b15a3211c8db2afdff0ac4f808
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 */ 55static int ali_ircc_suspend(struct platform_device *dev, pm_message_t state); 56static int ali_ircc_resume(struct platform_device *dev); 57 58static struct platform_driver ali_ircc_driver = { 59 .suspend = ali_ircc_suspend, 60 .resume = ali_ircc_resume, 61 .driver = { 62 .name = ALI_IRCC_DRIVER_NAME, 63 .owner = THIS_MODULE, 64 }, 65}; 66 67/* Module parameters */ 68static int qos_mtt_bits = 0x07; /* 1 ms or more */ 69 70/* Use BIOS settions by default, but user may supply module parameters */ 71static unsigned int io[] = { ~0, ~0, ~0, ~0 }; 72static unsigned int irq[] = { 0, 0, 0, 0 }; 73static unsigned int dma[] = { 0, 0, 0, 0 }; 74 75static int ali_ircc_probe_53(ali_chip_t *chip, chipio_t *info); 76static int ali_ircc_init_43(ali_chip_t *chip, chipio_t *info); 77static int ali_ircc_init_53(ali_chip_t *chip, chipio_t *info); 78 79/* These are the currently known ALi sourth-bridge chipsets, the only one difference 80 * is that M1543C doesn't support HP HDSL-3600 81 */ 82static ali_chip_t chips[] = 83{ 84 { "M1543", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x43, ali_ircc_probe_53, ali_ircc_init_43 }, 85 { "M1535", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x53, ali_ircc_probe_53, ali_ircc_init_53 }, 86 { "M1563", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x63, ali_ircc_probe_53, ali_ircc_init_53 }, 87 { NULL } 88}; 89 90/* Max 4 instances for now */ 91static struct ali_ircc_cb *dev_self[] = { NULL, NULL, NULL, NULL }; 92 93/* Dongle Types */ 94static char *dongle_types[] = { 95 "TFDS6000", 96 "HP HSDL-3600", 97 "HP HSDL-1100", 98 "No dongle connected", 99}; 100 101/* Some prototypes */ 102static int ali_ircc_open(int i, chipio_t *info); 103 104static int ali_ircc_close(struct ali_ircc_cb *self); 105 106static int ali_ircc_setup(chipio_t *info); 107static int ali_ircc_is_receiving(struct ali_ircc_cb *self); 108static int ali_ircc_net_open(struct net_device *dev); 109static int ali_ircc_net_close(struct net_device *dev); 110static int ali_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); 111static void ali_ircc_change_speed(struct ali_ircc_cb *self, __u32 baud); 112 113/* SIR function */ 114static netdev_tx_t ali_ircc_sir_hard_xmit(struct sk_buff *skb, 115 struct net_device *dev); 116static irqreturn_t ali_ircc_sir_interrupt(struct ali_ircc_cb *self); 117static void ali_ircc_sir_receive(struct ali_ircc_cb *self); 118static void ali_ircc_sir_write_wakeup(struct ali_ircc_cb *self); 119static int ali_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len); 120static void ali_ircc_sir_change_speed(struct ali_ircc_cb *priv, __u32 speed); 121 122/* FIR function */ 123static netdev_tx_t ali_ircc_fir_hard_xmit(struct sk_buff *skb, 124 struct net_device *dev); 125static void ali_ircc_fir_change_speed(struct ali_ircc_cb *priv, __u32 speed); 126static irqreturn_t ali_ircc_fir_interrupt(struct ali_ircc_cb *self); 127static int ali_ircc_dma_receive(struct ali_ircc_cb *self); 128static int ali_ircc_dma_receive_complete(struct ali_ircc_cb *self); 129static int ali_ircc_dma_xmit_complete(struct ali_ircc_cb *self); 130static void ali_ircc_dma_xmit(struct ali_ircc_cb *self); 131 132/* My Function */ 133static int ali_ircc_read_dongle_id (int i, chipio_t *info); 134static void ali_ircc_change_dongle_speed(struct ali_ircc_cb *priv, int speed); 135 136/* ALi chip function */ 137static void SIR2FIR(int iobase); 138static void FIR2SIR(int iobase); 139static void SetCOMInterrupts(struct ali_ircc_cb *self , unsigned char enable); 140 141/* 142 * Function ali_ircc_init () 143 * 144 * Initialize chip. Find out whay kinds of chips we are dealing with 145 * and their configuation registers address 146 */ 147static int __init ali_ircc_init(void) 148{ 149 ali_chip_t *chip; 150 chipio_t info; 151 int ret; 152 int cfg, cfg_base; 153 int reg, revision; 154 int i = 0; 155 156 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__); 157 158 ret = platform_driver_register(&ali_ircc_driver); 159 if (ret) { 160 IRDA_ERROR("%s, Can't register driver!\n", 161 ALI_IRCC_DRIVER_NAME); 162 return ret; 163 } 164 165 ret = -ENODEV; 166 167 /* Probe for all the ALi chipsets we know about */ 168 for (chip= chips; chip->name; chip++, i++) 169 { 170 IRDA_DEBUG(2, "%s(), Probing for %s ...\n", __func__, chip->name); 171 172 /* Try all config registers for this chip */ 173 for (cfg=0; cfg<2; cfg++) 174 { 175 cfg_base = chip->cfg[cfg]; 176 if (!cfg_base) 177 continue; 178 179 memset(&info, 0, sizeof(chipio_t)); 180 info.cfg_base = cfg_base; 181 info.fir_base = io[i]; 182 info.dma = dma[i]; 183 info.irq = irq[i]; 184 185 186 /* Enter Configuration */ 187 outb(chip->entr1, cfg_base); 188 outb(chip->entr2, cfg_base); 189 190 /* Select Logical Device 5 Registers (UART2) */ 191 outb(0x07, cfg_base); 192 outb(0x05, cfg_base+1); 193 194 /* Read Chip Identification Register */ 195 outb(chip->cid_index, cfg_base); 196 reg = inb(cfg_base+1); 197 198 if (reg == chip->cid_value) 199 { 200 IRDA_DEBUG(2, "%s(), Chip found at 0x%03x\n", __func__, cfg_base); 201 202 outb(0x1F, cfg_base); 203 revision = inb(cfg_base+1); 204 IRDA_DEBUG(2, "%s(), Found %s chip, revision=%d\n", __func__, 205 chip->name, revision); 206 207 /* 208 * If the user supplies the base address, then 209 * we init the chip, if not we probe the values 210 * set by the BIOS 211 */ 212 if (io[i] < 2000) 213 { 214 chip->init(chip, &info); 215 } 216 else 217 { 218 chip->probe(chip, &info); 219 } 220 221 if (ali_ircc_open(i, &info) == 0) 222 ret = 0; 223 i++; 224 } 225 else 226 { 227 IRDA_DEBUG(2, "%s(), No %s chip at 0x%03x\n", __func__, chip->name, cfg_base); 228 } 229 /* Exit configuration */ 230 outb(0xbb, cfg_base); 231 } 232 } 233 234 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__); 235 236 if (ret) 237 platform_driver_unregister(&ali_ircc_driver); 238 239 return ret; 240} 241 242/* 243 * Function ali_ircc_cleanup () 244 * 245 * Close all configured chips 246 * 247 */ 248static void __exit ali_ircc_cleanup(void) 249{ 250 int i; 251 252 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__); 253 254 for (i=0; i < ARRAY_SIZE(dev_self); i++) { 255 if (dev_self[i]) 256 ali_ircc_close(dev_self[i]); 257 } 258 259 platform_driver_unregister(&ali_ircc_driver); 260 261 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__); 262} 263 264static const struct net_device_ops ali_ircc_sir_ops = { 265 .ndo_open = ali_ircc_net_open, 266 .ndo_stop = ali_ircc_net_close, 267 .ndo_start_xmit = ali_ircc_sir_hard_xmit, 268 .ndo_do_ioctl = ali_ircc_net_ioctl, 269}; 270 271static const struct net_device_ops ali_ircc_fir_ops = { 272 .ndo_open = ali_ircc_net_open, 273 .ndo_stop = ali_ircc_net_close, 274 .ndo_start_xmit = ali_ircc_fir_hard_xmit, 275 .ndo_do_ioctl = ali_ircc_net_ioctl, 276}; 277 278/* 279 * Function ali_ircc_open (int i, chipio_t *inf) 280 * 281 * Open driver instance 282 * 283 */ 284static int ali_ircc_open(int i, chipio_t *info) 285{ 286 struct net_device *dev; 287 struct ali_ircc_cb *self; 288 int dongle_id; 289 int err; 290 291 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__); 292 293 if (i >= ARRAY_SIZE(dev_self)) { 294 IRDA_ERROR("%s(), maximum number of supported chips reached!\n", 295 __func__); 296 return -ENOMEM; 297 } 298 299 /* Set FIR FIFO and DMA Threshold */ 300 if ((ali_ircc_setup(info)) == -1) 301 return -1; 302 303 dev = alloc_irdadev(sizeof(*self)); 304 if (dev == NULL) { 305 IRDA_ERROR("%s(), can't allocate memory for control block!\n", 306 __func__); 307 return -ENOMEM; 308 } 309 310 self = netdev_priv(dev); 311 self->netdev = dev; 312 spin_lock_init(&self->lock); 313 314 /* Need to store self somewhere */ 315 dev_self[i] = self; 316 self->index = i; 317 318 /* Initialize IO */ 319 self->io.cfg_base = info->cfg_base; /* In ali_ircc_probe_53 assign */ 320 self->io.fir_base = info->fir_base; /* info->sir_base = info->fir_base */ 321 self->io.sir_base = info->sir_base; /* ALi SIR and FIR use the same address */ 322 self->io.irq = info->irq; 323 self->io.fir_ext = CHIP_IO_EXTENT; 324 self->io.dma = info->dma; 325 self->io.fifo_size = 16; /* SIR: 16, FIR: 32 Benjamin 2000/11/1 */ 326 327 /* Reserve the ioports that we need */ 328 if (!request_region(self->io.fir_base, self->io.fir_ext, 329 ALI_IRCC_DRIVER_NAME)) { 330 IRDA_WARNING("%s(), can't get iobase of 0x%03x\n", __func__, 331 self->io.fir_base); 332 err = -ENODEV; 333 goto err_out1; 334 } 335 336 /* Initialize QoS for this device */ 337 irda_init_max_qos_capabilies(&self->qos); 338 339 /* The only value we must override it the baudrate */ 340 self->qos.baud_rate.bits = IR_9600|IR_19200|IR_38400|IR_57600| 341 IR_115200|IR_576000|IR_1152000|(IR_4000000 << 8); // benjamin 2000/11/8 05:27PM 342 343 self->qos.min_turn_time.bits = qos_mtt_bits; 344 345 irda_qos_bits_to_value(&self->qos); 346 347 /* Max DMA buffer size needed = (data_size + 6) * (window_size) + 6; */ 348 self->rx_buff.truesize = 14384; 349 self->tx_buff.truesize = 14384; 350 351 /* Allocate memory if needed */ 352 self->rx_buff.head = 353 dma_alloc_coherent(NULL, self->rx_buff.truesize, 354 &self->rx_buff_dma, GFP_KERNEL); 355 if (self->rx_buff.head == NULL) { 356 err = -ENOMEM; 357 goto err_out2; 358 } 359 memset(self->rx_buff.head, 0, self->rx_buff.truesize); 360 361 self->tx_buff.head = 362 dma_alloc_coherent(NULL, self->tx_buff.truesize, 363 &self->tx_buff_dma, GFP_KERNEL); 364 if (self->tx_buff.head == NULL) { 365 err = -ENOMEM; 366 goto err_out3; 367 } 368 memset(self->tx_buff.head, 0, self->tx_buff.truesize); 369 370 self->rx_buff.in_frame = FALSE; 371 self->rx_buff.state = OUTSIDE_FRAME; 372 self->tx_buff.data = self->tx_buff.head; 373 self->rx_buff.data = self->rx_buff.head; 374 375 /* Reset Tx queue info */ 376 self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0; 377 self->tx_fifo.tail = self->tx_buff.head; 378 379 /* Override the network functions we need to use */ 380 dev->netdev_ops = &ali_ircc_sir_ops; 381 382 err = register_netdev(dev); 383 if (err) { 384 IRDA_ERROR("%s(), register_netdev() failed!\n", __func__); 385 goto err_out4; 386 } 387 IRDA_MESSAGE("IrDA: Registered device %s\n", dev->name); 388 389 /* Check dongle id */ 390 dongle_id = ali_ircc_read_dongle_id(i, info); 391 IRDA_MESSAGE("%s(), %s, Found dongle: %s\n", __func__, 392 ALI_IRCC_DRIVER_NAME, dongle_types[dongle_id]); 393 394 self->io.dongle_id = dongle_id; 395 396 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__); 397 398 return 0; 399 400 err_out4: 401 dma_free_coherent(NULL, self->tx_buff.truesize, 402 self->tx_buff.head, self->tx_buff_dma); 403 err_out3: 404 dma_free_coherent(NULL, self->rx_buff.truesize, 405 self->rx_buff.head, self->rx_buff_dma); 406 err_out2: 407 release_region(self->io.fir_base, self->io.fir_ext); 408 err_out1: 409 dev_self[i] = NULL; 410 free_netdev(dev); 411 return err; 412} 413 414 415/* 416 * Function ali_ircc_close (self) 417 * 418 * Close driver instance 419 * 420 */ 421static int __exit ali_ircc_close(struct ali_ircc_cb *self) 422{ 423 int iobase; 424 425 IRDA_DEBUG(4, "%s(), ---------------- Start ----------------\n", __func__); 426 427 IRDA_ASSERT(self != NULL, return -1;); 428 429 iobase = self->io.fir_base; 430 431 /* Remove netdevice */ 432 unregister_netdev(self->netdev); 433 434 /* Release the PORT that this driver is using */ 435 IRDA_DEBUG(4, "%s(), Releasing Region %03x\n", __func__, self->io.fir_base); 436 release_region(self->io.fir_base, self->io.fir_ext); 437 438 if (self->tx_buff.head) 439 dma_free_coherent(NULL, self->tx_buff.truesize, 440 self->tx_buff.head, self->tx_buff_dma); 441 442 if (self->rx_buff.head) 443 dma_free_coherent(NULL, self->rx_buff.truesize, 444 self->rx_buff.head, self->rx_buff_dma); 445 446 dev_self[self->index] = NULL; 447 free_netdev(self->netdev); 448 449 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__); 450 451 return 0; 452} 453 454/* 455 * Function ali_ircc_init_43 (chip, info) 456 * 457 * Initialize the ALi M1543 chip. 458 */ 459static int ali_ircc_init_43(ali_chip_t *chip, chipio_t *info) 460{ 461 /* All controller information like I/O address, DMA channel, IRQ 462 * are set by BIOS 463 */ 464 465 return 0; 466} 467 468/* 469 * Function ali_ircc_init_53 (chip, info) 470 * 471 * Initialize the ALi M1535 chip. 472 */ 473static int ali_ircc_init_53(ali_chip_t *chip, chipio_t *info) 474{ 475 /* All controller information like I/O address, DMA channel, IRQ 476 * are set by BIOS 477 */ 478 479 return 0; 480} 481 482/* 483 * Function ali_ircc_probe_53 (chip, info) 484 * 485 * Probes for the ALi M1535D or M1535 486 */ 487static int ali_ircc_probe_53(ali_chip_t *chip, chipio_t *info) 488{ 489 int cfg_base = info->cfg_base; 490 int hi, low, reg; 491 492 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__); 493 494 /* Enter Configuration */ 495 outb(chip->entr1, cfg_base); 496 outb(chip->entr2, cfg_base); 497 498 /* Select Logical Device 5 Registers (UART2) */ 499 outb(0x07, cfg_base); 500 outb(0x05, cfg_base+1); 501 502 /* Read address control register */ 503 outb(0x60, cfg_base); 504 hi = inb(cfg_base+1); 505 outb(0x61, cfg_base); 506 low = inb(cfg_base+1); 507 info->fir_base = (hi<<8) + low; 508 509 info->sir_base = info->fir_base; 510 511 IRDA_DEBUG(2, "%s(), probing fir_base=0x%03x\n", __func__, info->fir_base); 512 513 /* Read IRQ control register */ 514 outb(0x70, cfg_base); 515 reg = inb(cfg_base+1); 516 info->irq = reg & 0x0f; 517 IRDA_DEBUG(2, "%s(), probing irq=%d\n", __func__, info->irq); 518 519 /* Read DMA channel */ 520 outb(0x74, cfg_base); 521 reg = inb(cfg_base+1); 522 info->dma = reg & 0x07; 523 524 if(info->dma == 0x04) 525 IRDA_WARNING("%s(), No DMA channel assigned !\n", __func__); 526 else 527 IRDA_DEBUG(2, "%s(), probing dma=%d\n", __func__, info->dma); 528 529 /* Read Enabled Status */ 530 outb(0x30, cfg_base); 531 reg = inb(cfg_base+1); 532 info->enabled = (reg & 0x80) && (reg & 0x01); 533 IRDA_DEBUG(2, "%s(), probing enabled=%d\n", __func__, info->enabled); 534 535 /* Read Power Status */ 536 outb(0x22, cfg_base); 537 reg = inb(cfg_base+1); 538 info->suspended = (reg & 0x20); 539 IRDA_DEBUG(2, "%s(), probing suspended=%d\n", __func__, info->suspended); 540 541 /* Exit configuration */ 542 outb(0xbb, cfg_base); 543 544 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__); 545 546 return 0; 547} 548 549/* 550 * Function ali_ircc_setup (info) 551 * 552 * Set FIR FIFO and DMA Threshold 553 * Returns non-negative on success. 554 * 555 */ 556static int ali_ircc_setup(chipio_t *info) 557{ 558 unsigned char tmp; 559 int version; 560 int iobase = info->fir_base; 561 562 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__); 563 564 /* Locking comments : 565 * Most operations here need to be protected. We are called before 566 * the device instance is created in ali_ircc_open(), therefore 567 * nobody can bother us - Jean II */ 568 569 /* Switch to FIR space */ 570 SIR2FIR(iobase); 571 572 /* Master Reset */ 573 outb(0x40, iobase+FIR_MCR); // benjamin 2000/11/30 11:45AM 574 575 /* Read FIR ID Version Register */ 576 switch_bank(iobase, BANK3); 577 version = inb(iobase+FIR_ID_VR); 578 579 /* Should be 0x00 in the M1535/M1535D */ 580 if(version != 0x00) 581 { 582 IRDA_ERROR("%s, Wrong chip version %02x\n", 583 ALI_IRCC_DRIVER_NAME, version); 584 return -1; 585 } 586 587 /* Set FIR FIFO Threshold Register */ 588 switch_bank(iobase, BANK1); 589 outb(RX_FIFO_Threshold, iobase+FIR_FIFO_TR); 590 591 /* Set FIR DMA Threshold Register */ 592 outb(RX_DMA_Threshold, iobase+FIR_DMA_TR); 593 594 /* CRC enable */ 595 switch_bank(iobase, BANK2); 596 outb(inb(iobase+FIR_IRDA_CR) | IRDA_CR_CRC, iobase+FIR_IRDA_CR); 597 598 /* NDIS driver set TX Length here BANK2 Alias 3, Alias4*/ 599 600 /* Switch to Bank 0 */ 601 switch_bank(iobase, BANK0); 602 603 tmp = inb(iobase+FIR_LCR_B); 604 tmp &=~0x20; // disable SIP 605 tmp |= 0x80; // these two steps make RX mode 606 tmp &= 0xbf; 607 outb(tmp, iobase+FIR_LCR_B); 608 609 /* Disable Interrupt */ 610 outb(0x00, iobase+FIR_IER); 611 612 613 /* Switch to SIR space */ 614 FIR2SIR(iobase); 615 616 IRDA_MESSAGE("%s, driver loaded (Benjamin Kong)\n", 617 ALI_IRCC_DRIVER_NAME); 618 619 /* Enable receive interrupts */ 620 // outb(UART_IER_RDI, iobase+UART_IER); //benjamin 2000/11/23 01:25PM 621 // Turn on the interrupts in ali_ircc_net_open 622 623 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__); 624 625 return 0; 626} 627 628/* 629 * Function ali_ircc_read_dongle_id (int index, info) 630 * 631 * Try to read dongle indentification. This procedure needs to be executed 632 * once after power-on/reset. It also needs to be used whenever you suspect 633 * that the user may have plugged/unplugged the IrDA Dongle. 634 */ 635static int ali_ircc_read_dongle_id (int i, chipio_t *info) 636{ 637 int dongle_id, reg; 638 int cfg_base = info->cfg_base; 639 640 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__); 641 642 /* Enter Configuration */ 643 outb(chips[i].entr1, cfg_base); 644 outb(chips[i].entr2, cfg_base); 645 646 /* Select Logical Device 5 Registers (UART2) */ 647 outb(0x07, cfg_base); 648 outb(0x05, cfg_base+1); 649 650 /* Read Dongle ID */ 651 outb(0xf0, cfg_base); 652 reg = inb(cfg_base+1); 653 dongle_id = ((reg>>6)&0x02) | ((reg>>5)&0x01); 654 IRDA_DEBUG(2, "%s(), probing dongle_id=%d, dongle_types=%s\n", __func__, 655 dongle_id, dongle_types[dongle_id]); 656 657 /* Exit configuration */ 658 outb(0xbb, cfg_base); 659 660 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__); 661 662 return dongle_id; 663} 664 665/* 666 * Function ali_ircc_interrupt (irq, dev_id, regs) 667 * 668 * An interrupt from the chip has arrived. Time to do some work 669 * 670 */ 671static irqreturn_t ali_ircc_interrupt(int irq, void *dev_id) 672{ 673 struct net_device *dev = dev_id; 674 struct ali_ircc_cb *self; 675 int ret; 676 677 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__); 678 679 self = netdev_priv(dev); 680 681 spin_lock(&self->lock); 682 683 /* Dispatch interrupt handler for the current speed */ 684 if (self->io.speed > 115200) 685 ret = ali_ircc_fir_interrupt(self); 686 else 687 ret = ali_ircc_sir_interrupt(self); 688 689 spin_unlock(&self->lock); 690 691 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__); 692 return ret; 693} 694/* 695 * Function ali_ircc_fir_interrupt(irq, struct ali_ircc_cb *self) 696 * 697 * Handle MIR/FIR interrupt 698 * 699 */ 700static irqreturn_t ali_ircc_fir_interrupt(struct ali_ircc_cb *self) 701{ 702 __u8 eir, OldMessageCount; 703 int iobase, tmp; 704 705 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__); 706 707 iobase = self->io.fir_base; 708 709 switch_bank(iobase, BANK0); 710 self->InterruptID = inb(iobase+FIR_IIR); 711 self->BusStatus = inb(iobase+FIR_BSR); 712 713 OldMessageCount = (self->LineStatus + 1) & 0x07; 714 self->LineStatus = inb(iobase+FIR_LSR); 715 //self->ier = inb(iobase+FIR_IER); 2000/12/1 04:32PM 716 eir = self->InterruptID & self->ier; /* Mask out the interesting ones */ 717 718 IRDA_DEBUG(1, "%s(), self->InterruptID = %x\n", __func__,self->InterruptID); 719 IRDA_DEBUG(1, "%s(), self->LineStatus = %x\n", __func__,self->LineStatus); 720 IRDA_DEBUG(1, "%s(), self->ier = %x\n", __func__,self->ier); 721 IRDA_DEBUG(1, "%s(), eir = %x\n", __func__,eir); 722 723 /* Disable interrupts */ 724 SetCOMInterrupts(self, FALSE); 725 726 /* Tx or Rx Interrupt */ 727 728 if (eir & IIR_EOM) 729 { 730 if (self->io.direction == IO_XMIT) /* TX */ 731 { 732 IRDA_DEBUG(1, "%s(), ******* IIR_EOM (Tx) *******\n", __func__); 733 734 if(ali_ircc_dma_xmit_complete(self)) 735 { 736 if (irda_device_txqueue_empty(self->netdev)) 737 { 738 /* Prepare for receive */ 739 ali_ircc_dma_receive(self); 740 self->ier = IER_EOM; 741 } 742 } 743 else 744 { 745 self->ier = IER_EOM; 746 } 747 748 } 749 else /* RX */ 750 { 751 IRDA_DEBUG(1, "%s(), ******* IIR_EOM (Rx) *******\n", __func__); 752 753 if(OldMessageCount > ((self->LineStatus+1) & 0x07)) 754 { 755 self->rcvFramesOverflow = TRUE; 756 IRDA_DEBUG(1, "%s(), ******* self->rcvFramesOverflow = TRUE ******** \n", __func__); 757 } 758 759 if (ali_ircc_dma_receive_complete(self)) 760 { 761 IRDA_DEBUG(1, "%s(), ******* receive complete ******** \n", __func__); 762 763 self->ier = IER_EOM; 764 } 765 else 766 { 767 IRDA_DEBUG(1, "%s(), ******* Not receive complete ******** \n", __func__); 768 769 self->ier = IER_EOM | IER_TIMER; 770 } 771 772 } 773 } 774 /* Timer Interrupt */ 775 else if (eir & IIR_TIMER) 776 { 777 if(OldMessageCount > ((self->LineStatus+1) & 0x07)) 778 { 779 self->rcvFramesOverflow = TRUE; 780 IRDA_DEBUG(1, "%s(), ******* self->rcvFramesOverflow = TRUE ******* \n", __func__); 781 } 782 /* Disable Timer */ 783 switch_bank(iobase, BANK1); 784 tmp = inb(iobase+FIR_CR); 785 outb( tmp& ~CR_TIMER_EN, iobase+FIR_CR); 786 787 /* Check if this is a Tx timer interrupt */ 788 if (self->io.direction == IO_XMIT) 789 { 790 ali_ircc_dma_xmit(self); 791 792 /* Interrupt on EOM */ 793 self->ier = IER_EOM; 794 795 } 796 else /* Rx */ 797 { 798 if(ali_ircc_dma_receive_complete(self)) 799 { 800 self->ier = IER_EOM; 801 } 802 else 803 { 804 self->ier = IER_EOM | IER_TIMER; 805 } 806 } 807 } 808 809 /* Restore Interrupt */ 810 SetCOMInterrupts(self, TRUE); 811 812 IRDA_DEBUG(1, "%s(), ----------------- End ---------------\n", __func__); 813 return IRQ_RETVAL(eir); 814} 815 816/* 817 * Function ali_ircc_sir_interrupt (irq, self, eir) 818 * 819 * Handle SIR interrupt 820 * 821 */ 822static irqreturn_t ali_ircc_sir_interrupt(struct ali_ircc_cb *self) 823{ 824 int iobase; 825 int iir, lsr; 826 827 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__); 828 829 iobase = self->io.sir_base; 830 831 iir = inb(iobase+UART_IIR) & UART_IIR_ID; 832 if (iir) { 833 /* Clear interrupt */ 834 lsr = inb(iobase+UART_LSR); 835 836 IRDA_DEBUG(4, "%s(), iir=%02x, lsr=%02x, iobase=%#x\n", __func__, 837 iir, lsr, iobase); 838 839 switch (iir) 840 { 841 case UART_IIR_RLSI: 842 IRDA_DEBUG(2, "%s(), RLSI\n", __func__); 843 break; 844 case UART_IIR_RDI: 845 /* Receive interrupt */ 846 ali_ircc_sir_receive(self); 847 break; 848 case UART_IIR_THRI: 849 if (lsr & UART_LSR_THRE) 850 { 851 /* Transmitter ready for data */ 852 ali_ircc_sir_write_wakeup(self); 853 } 854 break; 855 default: 856 IRDA_DEBUG(0, "%s(), unhandled IIR=%#x\n", __func__, iir); 857 break; 858 } 859 860 } 861 862 863 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__); 864 865 return IRQ_RETVAL(iir); 866} 867 868 869/* 870 * Function ali_ircc_sir_receive (self) 871 * 872 * Receive one frame from the infrared port 873 * 874 */ 875static void ali_ircc_sir_receive(struct ali_ircc_cb *self) 876{ 877 int boguscount = 0; 878 int iobase; 879 880 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__); 881 IRDA_ASSERT(self != NULL, return;); 882 883 iobase = self->io.sir_base; 884 885 /* 886 * Receive all characters in Rx FIFO, unwrap and unstuff them. 887 * async_unwrap_char will deliver all found frames 888 */ 889 do { 890 async_unwrap_char(self->netdev, &self->netdev->stats, &self->rx_buff, 891 inb(iobase+UART_RX)); 892 893 /* Make sure we don't stay here too long */ 894 if (boguscount++ > 32) { 895 IRDA_DEBUG(2,"%s(), breaking!\n", __func__); 896 break; 897 } 898 } while (inb(iobase+UART_LSR) & UART_LSR_DR); 899 900 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ ); 901} 902 903/* 904 * Function ali_ircc_sir_write_wakeup (tty) 905 * 906 * Called by the driver when there's room for more data. If we have 907 * more packets to send, we send them here. 908 * 909 */ 910static void ali_ircc_sir_write_wakeup(struct ali_ircc_cb *self) 911{ 912 int actual = 0; 913 int iobase; 914 915 IRDA_ASSERT(self != NULL, return;); 916 917 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ ); 918 919 iobase = self->io.sir_base; 920 921 /* Finished with frame? */ 922 if (self->tx_buff.len > 0) 923 { 924 /* Write data left in transmit buffer */ 925 actual = ali_ircc_sir_write(iobase, self->io.fifo_size, 926 self->tx_buff.data, self->tx_buff.len); 927 self->tx_buff.data += actual; 928 self->tx_buff.len -= actual; 929 } 930 else 931 { 932 if (self->new_speed) 933 { 934 /* We must wait until all data are gone */ 935 while(!(inb(iobase+UART_LSR) & UART_LSR_TEMT)) 936 IRDA_DEBUG(1, "%s(), UART_LSR_THRE\n", __func__ ); 937 938 IRDA_DEBUG(1, "%s(), Changing speed! self->new_speed = %d\n", __func__ , self->new_speed); 939 ali_ircc_change_speed(self, self->new_speed); 940 self->new_speed = 0; 941 942 // benjamin 2000/11/10 06:32PM 943 if (self->io.speed > 115200) 944 { 945 IRDA_DEBUG(2, "%s(), ali_ircc_change_speed from UART_LSR_TEMT \n", __func__ ); 946 947 self->ier = IER_EOM; 948 // SetCOMInterrupts(self, TRUE); 949 return; 950 } 951 } 952 else 953 { 954 netif_wake_queue(self->netdev); 955 } 956 957 self->netdev->stats.tx_packets++; 958 959 /* Turn on receive interrupts */ 960 outb(UART_IER_RDI, iobase+UART_IER); 961 } 962 963 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ ); 964} 965 966static void ali_ircc_change_speed(struct ali_ircc_cb *self, __u32 baud) 967{ 968 struct net_device *dev = self->netdev; 969 int iobase; 970 971 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ ); 972 973 IRDA_DEBUG(2, "%s(), setting speed = %d \n", __func__ , baud); 974 975 /* This function *must* be called with irq off and spin-lock. 976 * - Jean II */ 977 978 iobase = self->io.fir_base; 979 980 SetCOMInterrupts(self, FALSE); // 2000/11/24 11:43AM 981 982 /* Go to MIR, FIR Speed */ 983 if (baud > 115200) 984 { 985 986 987 ali_ircc_fir_change_speed(self, baud); 988 989 /* Install FIR xmit handler*/ 990 dev->netdev_ops = &ali_ircc_fir_ops; 991 992 /* Enable Interuupt */ 993 self->ier = IER_EOM; // benjamin 2000/11/20 07:24PM 994 995 /* Be ready for incomming frames */ 996 ali_ircc_dma_receive(self); // benajmin 2000/11/8 07:46PM not complete 997 } 998 /* Go to SIR Speed */ 999 else 1000 { 1001 ali_ircc_sir_change_speed(self, baud); 1002 1003 /* Install SIR xmit handler*/ 1004 dev->netdev_ops = &ali_ircc_sir_ops; 1005 } 1006 1007 1008 SetCOMInterrupts(self, TRUE); // 2000/11/24 11:43AM 1009 1010 netif_wake_queue(self->netdev); 1011 1012 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ ); 1013} 1014 1015static void ali_ircc_fir_change_speed(struct ali_ircc_cb *priv, __u32 baud) 1016{ 1017 1018 int iobase; 1019 struct ali_ircc_cb *self = (struct ali_ircc_cb *) priv; 1020 struct net_device *dev; 1021 1022 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ ); 1023 1024 IRDA_ASSERT(self != NULL, return;); 1025 1026 dev = self->netdev; 1027 iobase = self->io.fir_base; 1028 1029 IRDA_DEBUG(1, "%s(), self->io.speed = %d, change to speed = %d\n", __func__ ,self->io.speed,baud); 1030 1031 /* Come from SIR speed */ 1032 if(self->io.speed <=115200) 1033 { 1034 SIR2FIR(iobase); 1035 } 1036 1037 /* Update accounting for new speed */ 1038 self->io.speed = baud; 1039 1040 // Set Dongle Speed mode 1041 ali_ircc_change_dongle_speed(self, baud); 1042 1043 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ ); 1044} 1045 1046/* 1047 * Function ali_sir_change_speed (self, speed) 1048 * 1049 * Set speed of IrDA port to specified baudrate 1050 * 1051 */ 1052static void ali_ircc_sir_change_speed(struct ali_ircc_cb *priv, __u32 speed) 1053{ 1054 struct ali_ircc_cb *self = (struct ali_ircc_cb *) priv; 1055 unsigned long flags; 1056 int iobase; 1057 int fcr; /* FIFO control reg */ 1058 int lcr; /* Line control reg */ 1059 int divisor; 1060 1061 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ ); 1062 1063 IRDA_DEBUG(1, "%s(), Setting speed to: %d\n", __func__ , speed); 1064 1065 IRDA_ASSERT(self != NULL, return;); 1066 1067 iobase = self->io.sir_base; 1068 1069 /* Come from MIR or FIR speed */ 1070 if(self->io.speed >115200) 1071 { 1072 // Set Dongle Speed mode first 1073 ali_ircc_change_dongle_speed(self, speed); 1074 1075 FIR2SIR(iobase); 1076 } 1077 1078 // Clear Line and Auxiluary status registers 2000/11/24 11:47AM 1079 1080 inb(iobase+UART_LSR); 1081 inb(iobase+UART_SCR); 1082 1083 /* Update accounting for new speed */ 1084 self->io.speed = speed; 1085 1086 spin_lock_irqsave(&self->lock, flags); 1087 1088 divisor = 115200/speed; 1089 1090 fcr = UART_FCR_ENABLE_FIFO; 1091 1092 /* 1093 * Use trigger level 1 to avoid 3 ms. timeout delay at 9600 bps, and 1094 * almost 1,7 ms at 19200 bps. At speeds above that we can just forget 1095 * about this timeout since it will always be fast enough. 1096 */ 1097 if (self->io.speed < 38400) 1098 fcr |= UART_FCR_TRIGGER_1; 1099 else 1100 fcr |= UART_FCR_TRIGGER_14; 1101 1102 /* IrDA ports use 8N1 */ 1103 lcr = UART_LCR_WLEN8; 1104 1105 outb(UART_LCR_DLAB | lcr, iobase+UART_LCR); /* Set DLAB */ 1106 outb(divisor & 0xff, iobase+UART_DLL); /* Set speed */ 1107 outb(divisor >> 8, iobase+UART_DLM); 1108 outb(lcr, iobase+UART_LCR); /* Set 8N1 */ 1109 outb(fcr, iobase+UART_FCR); /* Enable FIFO's */ 1110 1111 /* without this, the conection will be broken after come back from FIR speed, 1112 but with this, the SIR connection is harder to established */ 1113 outb((UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2), iobase+UART_MCR); 1114 1115 spin_unlock_irqrestore(&self->lock, flags); 1116 1117 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ ); 1118} 1119 1120static void ali_ircc_change_dongle_speed(struct ali_ircc_cb *priv, int speed) 1121{ 1122 1123 struct ali_ircc_cb *self = (struct ali_ircc_cb *) priv; 1124 int iobase,dongle_id; 1125 int tmp = 0; 1126 1127 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ ); 1128 1129 iobase = self->io.fir_base; /* or iobase = self->io.sir_base; */ 1130 dongle_id = self->io.dongle_id; 1131 1132 /* We are already locked, no need to do it again */ 1133 1134 IRDA_DEBUG(1, "%s(), Set Speed for %s , Speed = %d\n", __func__ , dongle_types[dongle_id], speed); 1135 1136 switch_bank(iobase, BANK2); 1137 tmp = inb(iobase+FIR_IRDA_CR); 1138 1139 /* IBM type dongle */ 1140 if(dongle_id == 0) 1141 { 1142 if(speed == 4000000) 1143 { 1144 // __ __ 1145 // SD/MODE __| |__ __ 1146 // __ __ 1147 // IRTX __ __| |__ 1148 // T1 T2 T3 T4 T5 1149 1150 tmp &= ~IRDA_CR_HDLC; // HDLC=0 1151 tmp |= IRDA_CR_CRC; // CRC=1 1152 1153 switch_bank(iobase, BANK2); 1154 outb(tmp, iobase+FIR_IRDA_CR); 1155 1156 // T1 -> SD/MODE:0 IRTX:0 1157 tmp &= ~0x09; 1158 tmp |= 0x02; 1159 outb(tmp, iobase+FIR_IRDA_CR); 1160 udelay(2); 1161 1162 // T2 -> SD/MODE:1 IRTX:0 1163 tmp &= ~0x01; 1164 tmp |= 0x0a; 1165 outb(tmp, iobase+FIR_IRDA_CR); 1166 udelay(2); 1167 1168 // T3 -> SD/MODE:1 IRTX:1 1169 tmp |= 0x0b; 1170 outb(tmp, iobase+FIR_IRDA_CR); 1171 udelay(2); 1172 1173 // T4 -> SD/MODE:0 IRTX:1 1174 tmp &= ~0x08; 1175 tmp |= 0x03; 1176 outb(tmp, iobase+FIR_IRDA_CR); 1177 udelay(2); 1178 1179 // T5 -> SD/MODE:0 IRTX:0 1180 tmp &= ~0x09; 1181 tmp |= 0x02; 1182 outb(tmp, iobase+FIR_IRDA_CR); 1183 udelay(2); 1184 1185 // reset -> Normal TX output Signal 1186 outb(tmp & ~0x02, iobase+FIR_IRDA_CR); 1187 } 1188 else /* speed <=1152000 */ 1189 { 1190 // __ 1191 // SD/MODE __| |__ 1192 // 1193 // IRTX ________ 1194 // T1 T2 T3 1195 1196 /* MIR 115200, 57600 */ 1197 if (speed==1152000) 1198 { 1199 tmp |= 0xA0; //HDLC=1, 1.152Mbps=1 1200 } 1201 else 1202 { 1203 tmp &=~0x80; //HDLC 0.576Mbps 1204 tmp |= 0x20; //HDLC=1, 1205 } 1206 1207 tmp |= IRDA_CR_CRC; // CRC=1 1208 1209 switch_bank(iobase, BANK2); 1210 outb(tmp, iobase+FIR_IRDA_CR); 1211 1212 /* MIR 115200, 57600 */ 1213 1214 //switch_bank(iobase, BANK2); 1215 // T1 -> SD/MODE:0 IRTX:0 1216 tmp &= ~0x09; 1217 tmp |= 0x02; 1218 outb(tmp, iobase+FIR_IRDA_CR); 1219 udelay(2); 1220 1221 // T2 -> SD/MODE:1 IRTX:0 1222 tmp &= ~0x01; 1223 tmp |= 0x0a; 1224 outb(tmp, iobase+FIR_IRDA_CR); 1225 1226 // T3 -> SD/MODE:0 IRTX:0 1227 tmp &= ~0x09; 1228 tmp |= 0x02; 1229 outb(tmp, iobase+FIR_IRDA_CR); 1230 udelay(2); 1231 1232 // reset -> Normal TX output Signal 1233 outb(tmp & ~0x02, iobase+FIR_IRDA_CR); 1234 } 1235 } 1236 else if (dongle_id == 1) /* HP HDSL-3600 */ 1237 { 1238 switch(speed) 1239 { 1240 case 4000000: 1241 tmp &= ~IRDA_CR_HDLC; // HDLC=0 1242 break; 1243 1244 case 1152000: 1245 tmp |= 0xA0; // HDLC=1, 1.152Mbps=1 1246 break; 1247 1248 case 576000: 1249 tmp &=~0x80; // HDLC 0.576Mbps 1250 tmp |= 0x20; // HDLC=1, 1251 break; 1252 } 1253 1254 tmp |= IRDA_CR_CRC; // CRC=1 1255 1256 switch_bank(iobase, BANK2); 1257 outb(tmp, iobase+FIR_IRDA_CR); 1258 } 1259 else /* HP HDSL-1100 */ 1260 { 1261 if(speed <= 115200) /* SIR */ 1262 { 1263 1264 tmp &= ~IRDA_CR_FIR_SIN; // HP sin select = 0 1265 1266 switch_bank(iobase, BANK2); 1267 outb(tmp, iobase+FIR_IRDA_CR); 1268 } 1269 else /* MIR FIR */ 1270 { 1271 1272 switch(speed) 1273 { 1274 case 4000000: 1275 tmp &= ~IRDA_CR_HDLC; // HDLC=0 1276 break; 1277 1278 case 1152000: 1279 tmp |= 0xA0; // HDLC=1, 1.152Mbps=1 1280 break; 1281 1282 case 576000: 1283 tmp &=~0x80; // HDLC 0.576Mbps 1284 tmp |= 0x20; // HDLC=1, 1285 break; 1286 } 1287 1288 tmp |= IRDA_CR_CRC; // CRC=1 1289 tmp |= IRDA_CR_FIR_SIN; // HP sin select = 1 1290 1291 switch_bank(iobase, BANK2); 1292 outb(tmp, iobase+FIR_IRDA_CR); 1293 } 1294 } 1295 1296 switch_bank(iobase, BANK0); 1297 1298 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ ); 1299} 1300 1301/* 1302 * Function ali_ircc_sir_write (driver) 1303 * 1304 * Fill Tx FIFO with transmit data 1305 * 1306 */ 1307static int ali_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len) 1308{ 1309 int actual = 0; 1310 1311 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ ); 1312 1313 /* Tx FIFO should be empty! */ 1314 if (!(inb(iobase+UART_LSR) & UART_LSR_THRE)) { 1315 IRDA_DEBUG(0, "%s(), failed, fifo not empty!\n", __func__ ); 1316 return 0; 1317 } 1318 1319 /* Fill FIFO with current frame */ 1320 while ((fifo_size-- > 0) && (actual < len)) { 1321 /* Transmit next byte */ 1322 outb(buf[actual], iobase+UART_TX); 1323 1324 actual++; 1325 } 1326 1327 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ ); 1328 return actual; 1329} 1330 1331/* 1332 * Function ali_ircc_net_open (dev) 1333 * 1334 * Start the device 1335 * 1336 */ 1337static int ali_ircc_net_open(struct net_device *dev) 1338{ 1339 struct ali_ircc_cb *self; 1340 int iobase; 1341 char hwname[32]; 1342 1343 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ ); 1344 1345 IRDA_ASSERT(dev != NULL, return -1;); 1346 1347 self = netdev_priv(dev); 1348 1349 IRDA_ASSERT(self != NULL, return 0;); 1350 1351 iobase = self->io.fir_base; 1352 1353 /* Request IRQ and install Interrupt Handler */ 1354 if (request_irq(self->io.irq, ali_ircc_interrupt, 0, dev->name, dev)) 1355 { 1356 IRDA_WARNING("%s, unable to allocate irq=%d\n", 1357 ALI_IRCC_DRIVER_NAME, 1358 self->io.irq); 1359 return -EAGAIN; 1360 } 1361 1362 /* 1363 * Always allocate the DMA channel after the IRQ, and clean up on 1364 * failure. 1365 */ 1366 if (request_dma(self->io.dma, dev->name)) { 1367 IRDA_WARNING("%s, unable to allocate dma=%d\n", 1368 ALI_IRCC_DRIVER_NAME, 1369 self->io.dma); 1370 free_irq(self->io.irq, self); 1371 return -EAGAIN; 1372 } 1373 1374 /* Turn on interrups */ 1375 outb(UART_IER_RDI , iobase+UART_IER); 1376 1377 /* Ready to play! */ 1378 netif_start_queue(dev); //benjamin by irport 1379 1380 /* Give self a hardware name */ 1381 sprintf(hwname, "ALI-FIR @ 0x%03x", self->io.fir_base); 1382 1383 /* 1384 * Open new IrLAP layer instance, now that everything should be 1385 * initialized properly 1386 */ 1387 self->irlap = irlap_open(dev, &self->qos, hwname); 1388 1389 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ ); 1390 1391 return 0; 1392} 1393 1394/* 1395 * Function ali_ircc_net_close (dev) 1396 * 1397 * Stop the device 1398 * 1399 */ 1400static int ali_ircc_net_close(struct net_device *dev) 1401{ 1402 1403 struct ali_ircc_cb *self; 1404 //int iobase; 1405 1406 IRDA_DEBUG(4, "%s(), ---------------- Start ----------------\n", __func__ ); 1407 1408 IRDA_ASSERT(dev != NULL, return -1;); 1409 1410 self = netdev_priv(dev); 1411 IRDA_ASSERT(self != NULL, return 0;); 1412 1413 /* Stop device */ 1414 netif_stop_queue(dev); 1415 1416 /* Stop and remove instance of IrLAP */ 1417 if (self->irlap) 1418 irlap_close(self->irlap); 1419 self->irlap = NULL; 1420 1421 disable_dma(self->io.dma); 1422 1423 /* Disable interrupts */ 1424 SetCOMInterrupts(self, FALSE); 1425 1426 free_irq(self->io.irq, dev); 1427 free_dma(self->io.dma); 1428 1429 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ ); 1430 1431 return 0; 1432} 1433 1434/* 1435 * Function ali_ircc_fir_hard_xmit (skb, dev) 1436 * 1437 * Transmit the frame 1438 * 1439 */ 1440static netdev_tx_t ali_ircc_fir_hard_xmit(struct sk_buff *skb, 1441 struct net_device *dev) 1442{ 1443 struct ali_ircc_cb *self; 1444 unsigned long flags; 1445 int iobase; 1446 __u32 speed; 1447 int mtt, diff; 1448 1449 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ ); 1450 1451 self = netdev_priv(dev); 1452 iobase = self->io.fir_base; 1453 1454 netif_stop_queue(dev); 1455 1456 /* Make sure tests *& speed change are atomic */ 1457 spin_lock_irqsave(&self->lock, flags); 1458 1459 /* Note : you should make sure that speed changes are not going 1460 * to corrupt any outgoing frame. Look at nsc-ircc for the gory 1461 * details - Jean II */ 1462 1463 /* Check if we need to change the speed */ 1464 speed = irda_get_next_speed(skb); 1465 if ((speed != self->io.speed) && (speed != -1)) { 1466 /* Check for empty frame */ 1467 if (!skb->len) { 1468 ali_ircc_change_speed(self, speed); 1469 dev->trans_start = jiffies; 1470 spin_unlock_irqrestore(&self->lock, flags); 1471 dev_kfree_skb(skb); 1472 return NETDEV_TX_OK; 1473 } else 1474 self->new_speed = speed; 1475 } 1476 1477 /* Register and copy this frame to DMA memory */ 1478 self->tx_fifo.queue[self->tx_fifo.free].start = self->tx_fifo.tail; 1479 self->tx_fifo.queue[self->tx_fifo.free].len = skb->len; 1480 self->tx_fifo.tail += skb->len; 1481 1482 dev->stats.tx_bytes += skb->len; 1483 1484 skb_copy_from_linear_data(skb, self->tx_fifo.queue[self->tx_fifo.free].start, 1485 skb->len); 1486 self->tx_fifo.len++; 1487 self->tx_fifo.free++; 1488 1489 /* Start transmit only if there is currently no transmit going on */ 1490 if (self->tx_fifo.len == 1) 1491 { 1492 /* Check if we must wait the min turn time or not */ 1493 mtt = irda_get_mtt(skb); 1494 1495 if (mtt) 1496 { 1497 /* Check how much time we have used already */ 1498 do_gettimeofday(&self->now); 1499 1500 diff = self->now.tv_usec - self->stamp.tv_usec; 1501 /* self->stamp is set from ali_ircc_dma_receive_complete() */ 1502 1503 IRDA_DEBUG(1, "%s(), ******* diff = %d ******* \n", __func__ , diff); 1504 1505 if (diff < 0) 1506 diff += 1000000; 1507 1508 /* Check if the mtt is larger than the time we have 1509 * already used by all the protocol processing 1510 */ 1511 if (mtt > diff) 1512 { 1513 mtt -= diff; 1514 1515 /* 1516 * Use timer if delay larger than 1000 us, and 1517 * use udelay for smaller values which should 1518 * be acceptable 1519 */ 1520 if (mtt > 500) 1521 { 1522 /* Adjust for timer resolution */ 1523 mtt = (mtt+250) / 500; /* 4 discard, 5 get advanced, Let's round off */ 1524 1525 IRDA_DEBUG(1, "%s(), ************** mtt = %d ***********\n", __func__ , mtt); 1526 1527 /* Setup timer */ 1528 if (mtt == 1) /* 500 us */ 1529 { 1530 switch_bank(iobase, BANK1); 1531 outb(TIMER_IIR_500, iobase+FIR_TIMER_IIR); 1532 } 1533 else if (mtt == 2) /* 1 ms */ 1534 { 1535 switch_bank(iobase, BANK1); 1536 outb(TIMER_IIR_1ms, iobase+FIR_TIMER_IIR); 1537 } 1538 else /* > 2ms -> 4ms */ 1539 { 1540 switch_bank(iobase, BANK1); 1541 outb(TIMER_IIR_2ms, iobase+FIR_TIMER_IIR); 1542 } 1543 1544 1545 /* Start timer */ 1546 outb(inb(iobase+FIR_CR) | CR_TIMER_EN, iobase+FIR_CR); 1547 self->io.direction = IO_XMIT; 1548 1549 /* Enable timer interrupt */ 1550 self->ier = IER_TIMER; 1551 SetCOMInterrupts(self, TRUE); 1552 1553 /* Timer will take care of the rest */ 1554 goto out; 1555 } 1556 else 1557 udelay(mtt); 1558 } // if (if (mtt > diff) 1559 }// if (mtt) 1560 1561 /* Enable EOM interrupt */ 1562 self->ier = IER_EOM; 1563 SetCOMInterrupts(self, TRUE); 1564 1565 /* Transmit frame */ 1566 ali_ircc_dma_xmit(self); 1567 } // if (self->tx_fifo.len == 1) 1568 1569 out: 1570 1571 /* Not busy transmitting anymore if window is not full */ 1572 if (self->tx_fifo.free < MAX_TX_WINDOW) 1573 netif_wake_queue(self->netdev); 1574 1575 /* Restore bank register */ 1576 switch_bank(iobase, BANK0); 1577 1578 dev->trans_start = jiffies; 1579 spin_unlock_irqrestore(&self->lock, flags); 1580 dev_kfree_skb(skb); 1581 1582 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ ); 1583 return NETDEV_TX_OK; 1584} 1585 1586 1587static void ali_ircc_dma_xmit(struct ali_ircc_cb *self) 1588{ 1589 int iobase, tmp; 1590 unsigned char FIFO_OPTI, Hi, Lo; 1591 1592 1593 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ ); 1594 1595 iobase = self->io.fir_base; 1596 1597 /* FIFO threshold , this method comes from NDIS5 code */ 1598 1599 if(self->tx_fifo.queue[self->tx_fifo.ptr].len < TX_FIFO_Threshold) 1600 FIFO_OPTI = self->tx_fifo.queue[self->tx_fifo.ptr].len-1; 1601 else 1602 FIFO_OPTI = TX_FIFO_Threshold; 1603 1604 /* Disable DMA */ 1605 switch_bank(iobase, BANK1); 1606 outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR); 1607 1608 self->io.direction = IO_XMIT; 1609 1610 irda_setup_dma(self->io.dma, 1611 ((u8 *)self->tx_fifo.queue[self->tx_fifo.ptr].start - 1612 self->tx_buff.head) + self->tx_buff_dma, 1613 self->tx_fifo.queue[self->tx_fifo.ptr].len, 1614 DMA_TX_MODE); 1615 1616 /* Reset Tx FIFO */ 1617 switch_bank(iobase, BANK0); 1618 outb(LCR_A_FIFO_RESET, iobase+FIR_LCR_A); 1619 1620 /* Set Tx FIFO threshold */ 1621 if (self->fifo_opti_buf!=FIFO_OPTI) 1622 { 1623 switch_bank(iobase, BANK1); 1624 outb(FIFO_OPTI, iobase+FIR_FIFO_TR) ; 1625 self->fifo_opti_buf=FIFO_OPTI; 1626 } 1627 1628 /* Set Tx DMA threshold */ 1629 switch_bank(iobase, BANK1); 1630 outb(TX_DMA_Threshold, iobase+FIR_DMA_TR); 1631 1632 /* Set max Tx frame size */ 1633 Hi = (self->tx_fifo.queue[self->tx_fifo.ptr].len >> 8) & 0x0f; 1634 Lo = self->tx_fifo.queue[self->tx_fifo.ptr].len & 0xff; 1635 switch_bank(iobase, BANK2); 1636 outb(Hi, iobase+FIR_TX_DSR_HI); 1637 outb(Lo, iobase+FIR_TX_DSR_LO); 1638 1639 /* Disable SIP , Disable Brick Wall (we don't support in TX mode), Change to TX mode */ 1640 switch_bank(iobase, BANK0); 1641 tmp = inb(iobase+FIR_LCR_B); 1642 tmp &= ~0x20; // Disable SIP 1643 outb(((unsigned char)(tmp & 0x3f) | LCR_B_TX_MODE) & ~LCR_B_BW, iobase+FIR_LCR_B); 1644 IRDA_DEBUG(1, "%s(), ******* Change to TX mode: FIR_LCR_B = 0x%x ******* \n", __func__ , inb(iobase+FIR_LCR_B)); 1645 1646 outb(0, iobase+FIR_LSR); 1647 1648 /* Enable DMA and Burst Mode */ 1649 switch_bank(iobase, BANK1); 1650 outb(inb(iobase+FIR_CR) | CR_DMA_EN | CR_DMA_BURST, iobase+FIR_CR); 1651 1652 switch_bank(iobase, BANK0); 1653 1654 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ ); 1655} 1656 1657static int ali_ircc_dma_xmit_complete(struct ali_ircc_cb *self) 1658{ 1659 int iobase; 1660 int ret = TRUE; 1661 1662 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ ); 1663 1664 iobase = self->io.fir_base; 1665 1666 /* Disable DMA */ 1667 switch_bank(iobase, BANK1); 1668 outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR); 1669 1670 /* Check for underrun! */ 1671 switch_bank(iobase, BANK0); 1672 if((inb(iobase+FIR_LSR) & LSR_FRAME_ABORT) == LSR_FRAME_ABORT) 1673 1674 { 1675 IRDA_ERROR("%s(), ********* LSR_FRAME_ABORT *********\n", __func__); 1676 self->netdev->stats.tx_errors++; 1677 self->netdev->stats.tx_fifo_errors++; 1678 } 1679 else 1680 { 1681 self->netdev->stats.tx_packets++; 1682 } 1683 1684 /* Check if we need to change the speed */ 1685 if (self->new_speed) 1686 { 1687 ali_ircc_change_speed(self, self->new_speed); 1688 self->new_speed = 0; 1689 } 1690 1691 /* Finished with this frame, so prepare for next */ 1692 self->tx_fifo.ptr++; 1693 self->tx_fifo.len--; 1694 1695 /* Any frames to be sent back-to-back? */ 1696 if (self->tx_fifo.len) 1697 { 1698 ali_ircc_dma_xmit(self); 1699 1700 /* Not finished yet! */ 1701 ret = FALSE; 1702 } 1703 else 1704 { /* Reset Tx FIFO info */ 1705 self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0; 1706 self->tx_fifo.tail = self->tx_buff.head; 1707 } 1708 1709 /* Make sure we have room for more frames */ 1710 if (self->tx_fifo.free < MAX_TX_WINDOW) { 1711 /* Not busy transmitting anymore */ 1712 /* Tell the network layer, that we can accept more frames */ 1713 netif_wake_queue(self->netdev); 1714 } 1715 1716 switch_bank(iobase, BANK0); 1717 1718 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ ); 1719 return ret; 1720} 1721 1722/* 1723 * Function ali_ircc_dma_receive (self) 1724 * 1725 * Get ready for receiving a frame. The device will initiate a DMA 1726 * if it starts to receive a frame. 1727 * 1728 */ 1729static int ali_ircc_dma_receive(struct ali_ircc_cb *self) 1730{ 1731 int iobase, tmp; 1732 1733 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ ); 1734 1735 iobase = self->io.fir_base; 1736 1737 /* Reset Tx FIFO info */ 1738 self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0; 1739 self->tx_fifo.tail = self->tx_buff.head; 1740 1741 /* Disable DMA */ 1742 switch_bank(iobase, BANK1); 1743 outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR); 1744 1745 /* Reset Message Count */ 1746 switch_bank(iobase, BANK0); 1747 outb(0x07, iobase+FIR_LSR); 1748 1749 self->rcvFramesOverflow = FALSE; 1750 1751 self->LineStatus = inb(iobase+FIR_LSR) ; 1752 1753 /* Reset Rx FIFO info */ 1754 self->io.direction = IO_RECV; 1755 self->rx_buff.data = self->rx_buff.head; 1756 1757 /* Reset Rx FIFO */ 1758 // switch_bank(iobase, BANK0); 1759 outb(LCR_A_FIFO_RESET, iobase+FIR_LCR_A); 1760 1761 self->st_fifo.len = self->st_fifo.pending_bytes = 0; 1762 self->st_fifo.tail = self->st_fifo.head = 0; 1763 1764 irda_setup_dma(self->io.dma, self->rx_buff_dma, self->rx_buff.truesize, 1765 DMA_RX_MODE); 1766 1767 /* Set Receive Mode,Brick Wall */ 1768 //switch_bank(iobase, BANK0); 1769 tmp = inb(iobase+FIR_LCR_B); 1770 outb((unsigned char)(tmp &0x3f) | LCR_B_RX_MODE | LCR_B_BW , iobase + FIR_LCR_B); // 2000/12/1 05:16PM 1771 IRDA_DEBUG(1, "%s(), *** Change To RX mode: FIR_LCR_B = 0x%x *** \n", __func__ , inb(iobase+FIR_LCR_B)); 1772 1773 /* Set Rx Threshold */ 1774 switch_bank(iobase, BANK1); 1775 outb(RX_FIFO_Threshold, iobase+FIR_FIFO_TR); 1776 outb(RX_DMA_Threshold, iobase+FIR_DMA_TR); 1777 1778 /* Enable DMA and Burst Mode */ 1779 // switch_bank(iobase, BANK1); 1780 outb(CR_DMA_EN | CR_DMA_BURST, iobase+FIR_CR); 1781 1782 switch_bank(iobase, BANK0); 1783 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ ); 1784 return 0; 1785} 1786 1787static int ali_ircc_dma_receive_complete(struct ali_ircc_cb *self) 1788{ 1789 struct st_fifo *st_fifo; 1790 struct sk_buff *skb; 1791 __u8 status, MessageCount; 1792 int len, i, iobase, val; 1793 1794 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ ); 1795 1796 st_fifo = &self->st_fifo; 1797 iobase = self->io.fir_base; 1798 1799 switch_bank(iobase, BANK0); 1800 MessageCount = inb(iobase+ FIR_LSR)&0x07; 1801 1802 if (MessageCount > 0) 1803 IRDA_DEBUG(0, "%s(), Messsage count = %d,\n", __func__ , MessageCount); 1804 1805 for (i=0; i<=MessageCount; i++) 1806 { 1807 /* Bank 0 */ 1808 switch_bank(iobase, BANK0); 1809 status = inb(iobase+FIR_LSR); 1810 1811 switch_bank(iobase, BANK2); 1812 len = inb(iobase+FIR_RX_DSR_HI) & 0x0f; 1813 len = len << 8; 1814 len |= inb(iobase+FIR_RX_DSR_LO); 1815 1816 IRDA_DEBUG(1, "%s(), RX Length = 0x%.2x,\n", __func__ , len); 1817 IRDA_DEBUG(1, "%s(), RX Status = 0x%.2x,\n", __func__ , status); 1818 1819 if (st_fifo->tail >= MAX_RX_WINDOW) { 1820 IRDA_DEBUG(0, "%s(), window is full!\n", __func__ ); 1821 continue; 1822 } 1823 1824 st_fifo->entries[st_fifo->tail].status = status; 1825 st_fifo->entries[st_fifo->tail].len = len; 1826 st_fifo->pending_bytes += len; 1827 st_fifo->tail++; 1828 st_fifo->len++; 1829 } 1830 1831 for (i=0; i<=MessageCount; i++) 1832 { 1833 /* Get first entry */ 1834 status = st_fifo->entries[st_fifo->head].status; 1835 len = st_fifo->entries[st_fifo->head].len; 1836 st_fifo->pending_bytes -= len; 1837 st_fifo->head++; 1838 st_fifo->len--; 1839 1840 /* Check for errors */ 1841 if ((status & 0xd8) || self->rcvFramesOverflow || (len==0)) 1842 { 1843 IRDA_DEBUG(0,"%s(), ************* RX Errors ************ \n", __func__ ); 1844 1845 /* Skip frame */ 1846 self->netdev->stats.rx_errors++; 1847 1848 self->rx_buff.data += len; 1849 1850 if (status & LSR_FIFO_UR) 1851 { 1852 self->netdev->stats.rx_frame_errors++; 1853 IRDA_DEBUG(0,"%s(), ************* FIFO Errors ************ \n", __func__ ); 1854 } 1855 if (status & LSR_FRAME_ERROR) 1856 { 1857 self->netdev->stats.rx_frame_errors++; 1858 IRDA_DEBUG(0,"%s(), ************* FRAME Errors ************ \n", __func__ ); 1859 } 1860 1861 if (status & LSR_CRC_ERROR) 1862 { 1863 self->netdev->stats.rx_crc_errors++; 1864 IRDA_DEBUG(0,"%s(), ************* CRC Errors ************ \n", __func__ ); 1865 } 1866 1867 if(self->rcvFramesOverflow) 1868 { 1869 self->netdev->stats.rx_frame_errors++; 1870 IRDA_DEBUG(0,"%s(), ************* Overran DMA buffer ************ \n", __func__ ); 1871 } 1872 if(len == 0) 1873 { 1874 self->netdev->stats.rx_frame_errors++; 1875 IRDA_DEBUG(0,"%s(), ********** Receive Frame Size = 0 ********* \n", __func__ ); 1876 } 1877 } 1878 else 1879 { 1880 1881 if (st_fifo->pending_bytes < 32) 1882 { 1883 switch_bank(iobase, BANK0); 1884 val = inb(iobase+FIR_BSR); 1885 if ((val& BSR_FIFO_NOT_EMPTY)== 0x80) 1886 { 1887 IRDA_DEBUG(0, "%s(), ************* BSR_FIFO_NOT_EMPTY ************ \n", __func__ ); 1888 1889 /* Put this entry back in fifo */ 1890 st_fifo->head--; 1891 st_fifo->len++; 1892 st_fifo->pending_bytes += len; 1893 st_fifo->entries[st_fifo->head].status = status; 1894 st_fifo->entries[st_fifo->head].len = len; 1895 1896 /* 1897 * DMA not finished yet, so try again 1898 * later, set timer value, resolution 1899 * 500 us 1900 */ 1901 1902 switch_bank(iobase, BANK1); 1903 outb(TIMER_IIR_500, iobase+FIR_TIMER_IIR); // 2001/1/2 05:07PM 1904 1905 /* Enable Timer */ 1906 outb(inb(iobase+FIR_CR) | CR_TIMER_EN, iobase+FIR_CR); 1907 1908 return FALSE; /* I'll be back! */ 1909 } 1910 } 1911 1912 /* 1913 * Remember the time we received this frame, so we can 1914 * reduce the min turn time a bit since we will know 1915 * how much time we have used for protocol processing 1916 */ 1917 do_gettimeofday(&self->stamp); 1918 1919 skb = dev_alloc_skb(len+1); 1920 if (skb == NULL) 1921 { 1922 IRDA_WARNING("%s(), memory squeeze, " 1923 "dropping frame.\n", 1924 __func__); 1925 self->netdev->stats.rx_dropped++; 1926 1927 return FALSE; 1928 } 1929 1930 /* Make sure IP header gets aligned */ 1931 skb_reserve(skb, 1); 1932 1933 /* Copy frame without CRC, CRC is removed by hardware*/ 1934 skb_put(skb, len); 1935 skb_copy_to_linear_data(skb, self->rx_buff.data, len); 1936 1937 /* Move to next frame */ 1938 self->rx_buff.data += len; 1939 self->netdev->stats.rx_bytes += len; 1940 self->netdev->stats.rx_packets++; 1941 1942 skb->dev = self->netdev; 1943 skb_reset_mac_header(skb); 1944 skb->protocol = htons(ETH_P_IRDA); 1945 netif_rx(skb); 1946 } 1947 } 1948 1949 switch_bank(iobase, BANK0); 1950 1951 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ ); 1952 return TRUE; 1953} 1954 1955 1956 1957/* 1958 * Function ali_ircc_sir_hard_xmit (skb, dev) 1959 * 1960 * Transmit the frame! 1961 * 1962 */ 1963static netdev_tx_t ali_ircc_sir_hard_xmit(struct sk_buff *skb, 1964 struct net_device *dev) 1965{ 1966 struct ali_ircc_cb *self; 1967 unsigned long flags; 1968 int iobase; 1969 __u32 speed; 1970 1971 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ ); 1972 1973 IRDA_ASSERT(dev != NULL, return NETDEV_TX_OK;); 1974 1975 self = netdev_priv(dev); 1976 IRDA_ASSERT(self != NULL, return NETDEV_TX_OK;); 1977 1978 iobase = self->io.sir_base; 1979 1980 netif_stop_queue(dev); 1981 1982 /* Make sure tests *& speed change are atomic */ 1983 spin_lock_irqsave(&self->lock, flags); 1984 1985 /* Note : you should make sure that speed changes are not going 1986 * to corrupt any outgoing frame. Look at nsc-ircc for the gory 1987 * details - Jean II */ 1988 1989 /* Check if we need to change the speed */ 1990 speed = irda_get_next_speed(skb); 1991 if ((speed != self->io.speed) && (speed != -1)) { 1992 /* Check for empty frame */ 1993 if (!skb->len) { 1994 ali_ircc_change_speed(self, speed); 1995 dev->trans_start = jiffies; 1996 spin_unlock_irqrestore(&self->lock, flags); 1997 dev_kfree_skb(skb); 1998 return NETDEV_TX_OK; 1999 } else 2000 self->new_speed = speed; 2001 } 2002 2003 /* Init tx buffer */ 2004 self->tx_buff.data = self->tx_buff.head; 2005 2006 /* Copy skb to tx_buff while wrapping, stuffing and making CRC */ 2007 self->tx_buff.len = async_wrap_skb(skb, self->tx_buff.data, 2008 self->tx_buff.truesize); 2009 2010 self->netdev->stats.tx_bytes += self->tx_buff.len; 2011 2012 /* Turn on transmit finished interrupt. Will fire immediately! */ 2013 outb(UART_IER_THRI, iobase+UART_IER); 2014 2015 dev->trans_start = jiffies; 2016 spin_unlock_irqrestore(&self->lock, flags); 2017 2018 dev_kfree_skb(skb); 2019 2020 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ ); 2021 2022 return NETDEV_TX_OK; 2023} 2024 2025 2026/* 2027 * Function ali_ircc_net_ioctl (dev, rq, cmd) 2028 * 2029 * Process IOCTL commands for this device 2030 * 2031 */ 2032static int ali_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 2033{ 2034 struct if_irda_req *irq = (struct if_irda_req *) rq; 2035 struct ali_ircc_cb *self; 2036 unsigned long flags; 2037 int ret = 0; 2038 2039 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ ); 2040 2041 IRDA_ASSERT(dev != NULL, return -1;); 2042 2043 self = netdev_priv(dev); 2044 2045 IRDA_ASSERT(self != NULL, return -1;); 2046 2047 IRDA_DEBUG(2, "%s(), %s, (cmd=0x%X)\n", __func__ , dev->name, cmd); 2048 2049 switch (cmd) { 2050 case SIOCSBANDWIDTH: /* Set bandwidth */ 2051 IRDA_DEBUG(1, "%s(), SIOCSBANDWIDTH\n", __func__ ); 2052 /* 2053 * This function will also be used by IrLAP to change the 2054 * speed, so we still must allow for speed change within 2055 * interrupt context. 2056 */ 2057 if (!in_interrupt() && !capable(CAP_NET_ADMIN)) 2058 return -EPERM; 2059 2060 spin_lock_irqsave(&self->lock, flags); 2061 ali_ircc_change_speed(self, irq->ifr_baudrate); 2062 spin_unlock_irqrestore(&self->lock, flags); 2063 break; 2064 case SIOCSMEDIABUSY: /* Set media busy */ 2065 IRDA_DEBUG(1, "%s(), SIOCSMEDIABUSY\n", __func__ ); 2066 if (!capable(CAP_NET_ADMIN)) 2067 return -EPERM; 2068 irda_device_set_media_busy(self->netdev, TRUE); 2069 break; 2070 case SIOCGRECEIVING: /* Check if we are receiving right now */ 2071 IRDA_DEBUG(2, "%s(), SIOCGRECEIVING\n", __func__ ); 2072 /* This is protected */ 2073 irq->ifr_receiving = ali_ircc_is_receiving(self); 2074 break; 2075 default: 2076 ret = -EOPNOTSUPP; 2077 } 2078 2079 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ ); 2080 2081 return ret; 2082} 2083 2084/* 2085 * Function ali_ircc_is_receiving (self) 2086 * 2087 * Return TRUE is we are currently receiving a frame 2088 * 2089 */ 2090static int ali_ircc_is_receiving(struct ali_ircc_cb *self) 2091{ 2092 unsigned long flags; 2093 int status = FALSE; 2094 int iobase; 2095 2096 IRDA_DEBUG(2, "%s(), ---------------- Start -----------------\n", __func__ ); 2097 2098 IRDA_ASSERT(self != NULL, return FALSE;); 2099 2100 spin_lock_irqsave(&self->lock, flags); 2101 2102 if (self->io.speed > 115200) 2103 { 2104 iobase = self->io.fir_base; 2105 2106 switch_bank(iobase, BANK1); 2107 if((inb(iobase+FIR_FIFO_FR) & 0x3f) != 0) 2108 { 2109 /* We are receiving something */ 2110 IRDA_DEBUG(1, "%s(), We are receiving something\n", __func__ ); 2111 status = TRUE; 2112 } 2113 switch_bank(iobase, BANK0); 2114 } 2115 else 2116 { 2117 status = (self->rx_buff.state != OUTSIDE_FRAME); 2118 } 2119 2120 spin_unlock_irqrestore(&self->lock, flags); 2121 2122 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ ); 2123 2124 return status; 2125} 2126 2127static int ali_ircc_suspend(struct platform_device *dev, pm_message_t state) 2128{ 2129 struct ali_ircc_cb *self = platform_get_drvdata(dev); 2130 2131 IRDA_MESSAGE("%s, Suspending\n", ALI_IRCC_DRIVER_NAME); 2132 2133 if (self->io.suspended) 2134 return 0; 2135 2136 ali_ircc_net_close(self->netdev); 2137 2138 self->io.suspended = 1; 2139 2140 return 0; 2141} 2142 2143static int ali_ircc_resume(struct platform_device *dev) 2144{ 2145 struct ali_ircc_cb *self = platform_get_drvdata(dev); 2146 2147 if (!self->io.suspended) 2148 return 0; 2149 2150 ali_ircc_net_open(self->netdev); 2151 2152 IRDA_MESSAGE("%s, Waking up\n", ALI_IRCC_DRIVER_NAME); 2153 2154 self->io.suspended = 0; 2155 2156 return 0; 2157} 2158 2159/* ALi Chip Function */ 2160 2161static void SetCOMInterrupts(struct ali_ircc_cb *self , unsigned char enable) 2162{ 2163 2164 unsigned char newMask; 2165 2166 int iobase = self->io.fir_base; /* or sir_base */ 2167 2168 IRDA_DEBUG(2, "%s(), -------- Start -------- ( Enable = %d )\n", __func__ , enable); 2169 2170 /* Enable the interrupt which we wish to */ 2171 if (enable){ 2172 if (self->io.direction == IO_XMIT) 2173 { 2174 if (self->io.speed > 115200) /* FIR, MIR */ 2175 { 2176 newMask = self->ier; 2177 } 2178 else /* SIR */ 2179 { 2180 newMask = UART_IER_THRI | UART_IER_RDI; 2181 } 2182 } 2183 else { 2184 if (self->io.speed > 115200) /* FIR, MIR */ 2185 { 2186 newMask = self->ier; 2187 } 2188 else /* SIR */ 2189 { 2190 newMask = UART_IER_RDI; 2191 } 2192 } 2193 } 2194 else /* Disable all the interrupts */ 2195 { 2196 newMask = 0x00; 2197 2198 } 2199 2200 //SIR and FIR has different registers 2201 if (self->io.speed > 115200) 2202 { 2203 switch_bank(iobase, BANK0); 2204 outb(newMask, iobase+FIR_IER); 2205 } 2206 else 2207 outb(newMask, iobase+UART_IER); 2208 2209 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ ); 2210} 2211 2212static void SIR2FIR(int iobase) 2213{ 2214 //unsigned char tmp; 2215 2216 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ ); 2217 2218 /* Already protected (change_speed() or setup()), no need to lock. 2219 * Jean II */ 2220 2221 outb(0x28, iobase+UART_MCR); 2222 outb(0x68, iobase+UART_MCR); 2223 outb(0x88, iobase+UART_MCR); 2224 2225 outb(0x60, iobase+FIR_MCR); /* Master Reset */ 2226 outb(0x20, iobase+FIR_MCR); /* Master Interrupt Enable */ 2227 2228 //tmp = inb(iobase+FIR_LCR_B); /* SIP enable */ 2229 //tmp |= 0x20; 2230 //outb(tmp, iobase+FIR_LCR_B); 2231 2232 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ ); 2233} 2234 2235static void FIR2SIR(int iobase) 2236{ 2237 unsigned char val; 2238 2239 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ ); 2240 2241 /* Already protected (change_speed() or setup()), no need to lock. 2242 * Jean II */ 2243 2244 outb(0x20, iobase+FIR_MCR); /* IRQ to low */ 2245 outb(0x00, iobase+UART_IER); 2246 2247 outb(0xA0, iobase+FIR_MCR); /* Don't set master reset */ 2248 outb(0x00, iobase+UART_FCR); 2249 outb(0x07, iobase+UART_FCR); 2250 2251 val = inb(iobase+UART_RX); 2252 val = inb(iobase+UART_LSR); 2253 val = inb(iobase+UART_MSR); 2254 2255 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ ); 2256} 2257 2258MODULE_AUTHOR("Benjamin Kong <benjamin_kong@ali.com.tw>"); 2259MODULE_DESCRIPTION("ALi FIR Controller Driver"); 2260MODULE_LICENSE("GPL"); 2261MODULE_ALIAS("platform:" ALI_IRCC_DRIVER_NAME); 2262 2263 2264module_param_array(io, int, NULL, 0); 2265MODULE_PARM_DESC(io, "Base I/O addresses"); 2266module_param_array(irq, int, NULL, 0); 2267MODULE_PARM_DESC(irq, "IRQ lines"); 2268module_param_array(dma, int, NULL, 0); 2269MODULE_PARM_DESC(dma, "DMA channels"); 2270 2271module_init(ali_ircc_init); 2272module_exit(ali_ircc_cleanup); 2273