1/********************************************************************* 2 * 3 * Filename: ali-ircc.h 4 * Version: 0.5 5 * Description: Driver for the ALI M1535D and M1543C FIR Controller 6 * Status: Experimental. 7 * Author: Benjamin Kong <benjamin_kong@ali.com.tw> 8 * Created at: 2000/10/16 03:46PM 9 * Modified at: 2001/1/3 02:55PM 10 * Modified by: Benjamin Kong <benjamin_kong@ali.com.tw> 11 * Modified at: 2003/11/6 and support for ALi south-bridge chipsets M1563 12 * Modified by: Clear Zhang <clear_zhang@ali.com.tw> 13 * 14 * Copyright (c) 2000 Benjamin Kong <benjamin_kong@ali.com.tw> 15 * All Rights Reserved 16 * 17 * This program is free software; you can redistribute it and/or 18 * modify it under the terms of the GNU General Public License as 19 * published by the Free Software Foundation; either version 2 of 20 * the License, or (at your option) any later version. 21 * 22 ********************************************************************/ 23 24#include <linux/module.h> 25#include <linux/gfp.h> 26 27#include <linux/kernel.h> 28#include <linux/types.h> 29#include <linux/skbuff.h> 30#include <linux/netdevice.h> 31#include <linux/ioport.h> 32#include <linux/delay.h> 33#include <linux/init.h> 34#include <linux/interrupt.h> 35#include <linux/rtnetlink.h> 36#include <linux/serial_reg.h> 37#include <linux/dma-mapping.h> 38#include <linux/platform_device.h> 39 40#include <asm/io.h> 41#include <asm/dma.h> 42#include <asm/byteorder.h> 43 44#include <net/irda/wrapper.h> 45#include <net/irda/irda.h> 46#include <net/irda/irda_device.h> 47 48#include "ali-ircc.h" 49 50#define CHIP_IO_EXTENT 8 51#define BROKEN_DONGLE_ID 52 53#define ALI_IRCC_DRIVER_NAME "ali-ircc" 54 55/* Power Management */ 56static int ali_ircc_suspend(struct platform_device *dev, pm_message_t state); 57static int ali_ircc_resume(struct platform_device *dev); 58 59static struct platform_driver ali_ircc_driver = { 60 .suspend = ali_ircc_suspend, 61 .resume = ali_ircc_resume, 62 .driver = { 63 .name = ALI_IRCC_DRIVER_NAME, 64 .owner = THIS_MODULE, 65 }, 66}; 67 68/* Module parameters */ 69static int qos_mtt_bits = 0x07; /* 1 ms or more */ 70 71/* Use BIOS settions by default, but user may supply module parameters */ 72static unsigned int io[] = { ~0, ~0, ~0, ~0 }; 73static unsigned int irq[] = { 0, 0, 0, 0 }; 74static unsigned int dma[] = { 0, 0, 0, 0 }; 75 76static int ali_ircc_probe_53(ali_chip_t *chip, chipio_t *info); 77static int ali_ircc_init_43(ali_chip_t *chip, chipio_t *info); 78static int ali_ircc_init_53(ali_chip_t *chip, chipio_t *info); 79 80/* These are the currently known ALi south-bridge chipsets, the only one difference 81 * is that M1543C doesn't support HP HDSL-3600 82 */ 83static ali_chip_t chips[] = 84{ 85 { "M1543", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x43, ali_ircc_probe_53, ali_ircc_init_43 }, 86 { "M1535", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x53, ali_ircc_probe_53, ali_ircc_init_53 }, 87 { "M1563", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x63, ali_ircc_probe_53, ali_ircc_init_53 }, 88 { NULL } 89}; 90 91/* Max 4 instances for now */ 92static struct ali_ircc_cb *dev_self[] = { NULL, NULL, NULL, NULL }; 93 94/* Dongle Types */ 95static char *dongle_types[] = { 96 "TFDS6000", 97 "HP HSDL-3600", 98 "HP HSDL-1100", 99 "No dongle connected", 100}; 101 102/* Some prototypes */ 103static int ali_ircc_open(int i, chipio_t *info); 104 105static int ali_ircc_close(struct ali_ircc_cb *self); 106 107static int ali_ircc_setup(chipio_t *info); 108static int ali_ircc_is_receiving(struct ali_ircc_cb *self); 109static int ali_ircc_net_open(struct net_device *dev); 110static int ali_ircc_net_close(struct net_device *dev); 111static int ali_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); 112static void ali_ircc_change_speed(struct ali_ircc_cb *self, __u32 baud); 113 114/* SIR function */ 115static netdev_tx_t ali_ircc_sir_hard_xmit(struct sk_buff *skb, 116 struct net_device *dev); 117static irqreturn_t ali_ircc_sir_interrupt(struct ali_ircc_cb *self); 118static void ali_ircc_sir_receive(struct ali_ircc_cb *self); 119static void ali_ircc_sir_write_wakeup(struct ali_ircc_cb *self); 120static int ali_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len); 121static void ali_ircc_sir_change_speed(struct ali_ircc_cb *priv, __u32 speed); 122 123/* FIR function */ 124static netdev_tx_t ali_ircc_fir_hard_xmit(struct sk_buff *skb, 125 struct net_device *dev); 126static void ali_ircc_fir_change_speed(struct ali_ircc_cb *priv, __u32 speed); 127static irqreturn_t ali_ircc_fir_interrupt(struct ali_ircc_cb *self); 128static int ali_ircc_dma_receive(struct ali_ircc_cb *self); 129static int ali_ircc_dma_receive_complete(struct ali_ircc_cb *self); 130static int ali_ircc_dma_xmit_complete(struct ali_ircc_cb *self); 131static void ali_ircc_dma_xmit(struct ali_ircc_cb *self); 132 133/* My Function */ 134static int ali_ircc_read_dongle_id (int i, chipio_t *info); 135static void ali_ircc_change_dongle_speed(struct ali_ircc_cb *priv, int speed); 136 137/* ALi chip function */ 138static void SIR2FIR(int iobase); 139static void FIR2SIR(int iobase); 140static void SetCOMInterrupts(struct ali_ircc_cb *self , unsigned char enable); 141 142/* 143 * Function ali_ircc_init () 144 * 145 * Initialize chip. Find out whay kinds of chips we are dealing with 146 * and their configuration registers address 147 */ 148static int __init ali_ircc_init(void) 149{ 150 ali_chip_t *chip; 151 chipio_t info; 152 int ret; 153 int cfg, cfg_base; 154 int reg, revision; 155 int i = 0; 156 157 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__); 158 159 ret = platform_driver_register(&ali_ircc_driver); 160 if (ret) { 161 IRDA_ERROR("%s, Can't register driver!\n", 162 ALI_IRCC_DRIVER_NAME); 163 return ret; 164 } 165 166 ret = -ENODEV; 167 168 /* Probe for all the ALi chipsets we know about */ 169 for (chip= chips; chip->name; chip++, i++) 170 { 171 IRDA_DEBUG(2, "%s(), Probing for %s ...\n", __func__, chip->name); 172 173 /* Try all config registers for this chip */ 174 for (cfg=0; cfg<2; cfg++) 175 { 176 cfg_base = chip->cfg[cfg]; 177 if (!cfg_base) 178 continue; 179 180 memset(&info, 0, sizeof(chipio_t)); 181 info.cfg_base = cfg_base; 182 info.fir_base = io[i]; 183 info.dma = dma[i]; 184 info.irq = irq[i]; 185 186 187 /* Enter Configuration */ 188 outb(chip->entr1, cfg_base); 189 outb(chip->entr2, cfg_base); 190 191 /* Select Logical Device 5 Registers (UART2) */ 192 outb(0x07, cfg_base); 193 outb(0x05, cfg_base+1); 194 195 /* Read Chip Identification Register */ 196 outb(chip->cid_index, cfg_base); 197 reg = inb(cfg_base+1); 198 199 if (reg == chip->cid_value) 200 { 201 IRDA_DEBUG(2, "%s(), Chip found at 0x%03x\n", __func__, cfg_base); 202 203 outb(0x1F, cfg_base); 204 revision = inb(cfg_base+1); 205 IRDA_DEBUG(2, "%s(), Found %s chip, revision=%d\n", __func__, 206 chip->name, revision); 207 208 /* 209 * If the user supplies the base address, then 210 * we init the chip, if not we probe the values 211 * set by the BIOS 212 */ 213 if (io[i] < 2000) 214 { 215 chip->init(chip, &info); 216 } 217 else 218 { 219 chip->probe(chip, &info); 220 } 221 222 if (ali_ircc_open(i, &info) == 0) 223 ret = 0; 224 i++; 225 } 226 else 227 { 228 IRDA_DEBUG(2, "%s(), No %s chip at 0x%03x\n", __func__, chip->name, cfg_base); 229 } 230 /* Exit configuration */ 231 outb(0xbb, cfg_base); 232 } 233 } 234 235 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__); 236 237 if (ret) 238 platform_driver_unregister(&ali_ircc_driver); 239 240 return ret; 241} 242 243/* 244 * Function ali_ircc_cleanup () 245 * 246 * Close all configured chips 247 * 248 */ 249static void __exit ali_ircc_cleanup(void) 250{ 251 int i; 252 253 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__); 254 255 for (i=0; i < ARRAY_SIZE(dev_self); i++) { 256 if (dev_self[i]) 257 ali_ircc_close(dev_self[i]); 258 } 259 260 platform_driver_unregister(&ali_ircc_driver); 261 262 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__); 263} 264 265static const struct net_device_ops ali_ircc_sir_ops = { 266 .ndo_open = ali_ircc_net_open, 267 .ndo_stop = ali_ircc_net_close, 268 .ndo_start_xmit = ali_ircc_sir_hard_xmit, 269 .ndo_do_ioctl = ali_ircc_net_ioctl, 270}; 271 272static const struct net_device_ops ali_ircc_fir_ops = { 273 .ndo_open = ali_ircc_net_open, 274 .ndo_stop = ali_ircc_net_close, 275 .ndo_start_xmit = ali_ircc_fir_hard_xmit, 276 .ndo_do_ioctl = ali_ircc_net_ioctl, 277}; 278 279/* 280 * Function ali_ircc_open (int i, chipio_t *inf) 281 * 282 * Open driver instance 283 * 284 */ 285static int ali_ircc_open(int i, chipio_t *info) 286{ 287 struct net_device *dev; 288 struct ali_ircc_cb *self; 289 int dongle_id; 290 int err; 291 292 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__); 293 294 if (i >= ARRAY_SIZE(dev_self)) { 295 IRDA_ERROR("%s(), maximum number of supported chips reached!\n", 296 __func__); 297 return -ENOMEM; 298 } 299 300 /* Set FIR FIFO and DMA Threshold */ 301 if ((ali_ircc_setup(info)) == -1) 302 return -1; 303 304 dev = alloc_irdadev(sizeof(*self)); 305 if (dev == NULL) { 306 IRDA_ERROR("%s(), can't allocate memory for control block!\n", 307 __func__); 308 return -ENOMEM; 309 } 310 311 self = netdev_priv(dev); 312 self->netdev = dev; 313 spin_lock_init(&self->lock); 314 315 /* Need to store self somewhere */ 316 dev_self[i] = self; 317 self->index = i; 318 319 /* Initialize IO */ 320 self->io.cfg_base = info->cfg_base; /* In ali_ircc_probe_53 assign */ 321 self->io.fir_base = info->fir_base; /* info->sir_base = info->fir_base */ 322 self->io.sir_base = info->sir_base; /* ALi SIR and FIR use the same address */ 323 self->io.irq = info->irq; 324 self->io.fir_ext = CHIP_IO_EXTENT; 325 self->io.dma = info->dma; 326 self->io.fifo_size = 16; /* SIR: 16, FIR: 32 Benjamin 2000/11/1 */ 327 328 /* Reserve the ioports that we need */ 329 if (!request_region(self->io.fir_base, self->io.fir_ext, 330 ALI_IRCC_DRIVER_NAME)) { 331 IRDA_WARNING("%s(), can't get iobase of 0x%03x\n", __func__, 332 self->io.fir_base); 333 err = -ENODEV; 334 goto err_out1; 335 } 336 337 /* Initialize QoS for this device */ 338 irda_init_max_qos_capabilies(&self->qos); 339 340 /* The only value we must override it the baudrate */ 341 self->qos.baud_rate.bits = IR_9600|IR_19200|IR_38400|IR_57600| 342 IR_115200|IR_576000|IR_1152000|(IR_4000000 << 8); // benjamin 2000/11/8 05:27PM 343 344 self->qos.min_turn_time.bits = qos_mtt_bits; 345 346 irda_qos_bits_to_value(&self->qos); 347 348 /* Max DMA buffer size needed = (data_size + 6) * (window_size) + 6; */ 349 self->rx_buff.truesize = 14384; 350 self->tx_buff.truesize = 14384; 351 352 /* Allocate memory if needed */ 353 self->rx_buff.head = 354 dma_zalloc_coherent(NULL, self->rx_buff.truesize, 355 &self->rx_buff_dma, GFP_KERNEL); 356 if (self->rx_buff.head == NULL) { 357 err = -ENOMEM; 358 goto err_out2; 359 } 360 361 self->tx_buff.head = 362 dma_zalloc_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 } 368 369 self->rx_buff.in_frame = FALSE; 370 self->rx_buff.state = OUTSIDE_FRAME; 371 self->tx_buff.data = self->tx_buff.head; 372 self->rx_buff.data = self->rx_buff.head; 373 374 /* Reset Tx queue info */ 375 self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0; 376 self->tx_fifo.tail = self->tx_buff.head; 377 378 /* Override the network functions we need to use */ 379 dev->netdev_ops = &ali_ircc_sir_ops; 380 381 err = register_netdev(dev); 382 if (err) { 383 IRDA_ERROR("%s(), register_netdev() failed!\n", __func__); 384 goto err_out4; 385 } 386 IRDA_MESSAGE("IrDA: Registered device %s\n", dev->name); 387 388 /* Check dongle id */ 389 dongle_id = ali_ircc_read_dongle_id(i, info); 390 IRDA_MESSAGE("%s(), %s, Found dongle: %s\n", __func__, 391 ALI_IRCC_DRIVER_NAME, dongle_types[dongle_id]); 392 393 self->io.dongle_id = dongle_id; 394 395 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__); 396 397 return 0; 398 399 err_out4: 400 dma_free_coherent(NULL, self->tx_buff.truesize, 401 self->tx_buff.head, self->tx_buff_dma); 402 err_out3: 403 dma_free_coherent(NULL, self->rx_buff.truesize, 404 self->rx_buff.head, self->rx_buff_dma); 405 err_out2: 406 release_region(self->io.fir_base, self->io.fir_ext); 407 err_out1: 408 dev_self[i] = NULL; 409 free_netdev(dev); 410 return err; 411} 412 413 414/* 415 * Function ali_ircc_close (self) 416 * 417 * Close driver instance 418 * 419 */ 420static int __exit ali_ircc_close(struct ali_ircc_cb *self) 421{ 422 int iobase; 423 424 IRDA_DEBUG(4, "%s(), ---------------- Start ----------------\n", __func__); 425 426 IRDA_ASSERT(self != NULL, return -1;); 427 428 iobase = self->io.fir_base; 429 430 /* Remove netdevice */ 431 unregister_netdev(self->netdev); 432 433 /* Release the PORT that this driver is using */ 434 IRDA_DEBUG(4, "%s(), Releasing Region %03x\n", __func__, self->io.fir_base); 435 release_region(self->io.fir_base, self->io.fir_ext); 436 437 if (self->tx_buff.head) 438 dma_free_coherent(NULL, self->tx_buff.truesize, 439 self->tx_buff.head, self->tx_buff_dma); 440 441 if (self->rx_buff.head) 442 dma_free_coherent(NULL, self->rx_buff.truesize, 443 self->rx_buff.head, self->rx_buff_dma); 444 445 dev_self[self->index] = NULL; 446 free_netdev(self->netdev); 447 448 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__); 449 450 return 0; 451} 452 453/* 454 * Function ali_ircc_init_43 (chip, info) 455 * 456 * Initialize the ALi M1543 chip. 457 */ 458static int ali_ircc_init_43(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_init_53 (chip, info) 469 * 470 * Initialize the ALi M1535 chip. 471 */ 472static int ali_ircc_init_53(ali_chip_t *chip, chipio_t *info) 473{ 474 /* All controller information like I/O address, DMA channel, IRQ 475 * are set by BIOS 476 */ 477 478 return 0; 479} 480 481/* 482 * Function ali_ircc_probe_53 (chip, info) 483 * 484 * Probes for the ALi M1535D or M1535 485 */ 486static int ali_ircc_probe_53(ali_chip_t *chip, chipio_t *info) 487{ 488 int cfg_base = info->cfg_base; 489 int hi, low, reg; 490 491 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__); 492 493 /* Enter Configuration */ 494 outb(chip->entr1, cfg_base); 495 outb(chip->entr2, cfg_base); 496 497 /* Select Logical Device 5 Registers (UART2) */ 498 outb(0x07, cfg_base); 499 outb(0x05, cfg_base+1); 500 501 /* Read address control register */ 502 outb(0x60, cfg_base); 503 hi = inb(cfg_base+1); 504 outb(0x61, cfg_base); 505 low = inb(cfg_base+1); 506 info->fir_base = (hi<<8) + low; 507 508 info->sir_base = info->fir_base; 509 510 IRDA_DEBUG(2, "%s(), probing fir_base=0x%03x\n", __func__, info->fir_base); 511 512 /* Read IRQ control register */ 513 outb(0x70, cfg_base); 514 reg = inb(cfg_base+1); 515 info->irq = reg & 0x0f; 516 IRDA_DEBUG(2, "%s(), probing irq=%d\n", __func__, info->irq); 517 518 /* Read DMA channel */ 519 outb(0x74, cfg_base); 520 reg = inb(cfg_base+1); 521 info->dma = reg & 0x07; 522 523 if(info->dma == 0x04) 524 IRDA_WARNING("%s(), No DMA channel assigned !\n", __func__); 525 else 526 IRDA_DEBUG(2, "%s(), probing dma=%d\n", __func__, info->dma); 527 528 /* Read Enabled Status */ 529 outb(0x30, cfg_base); 530 reg = inb(cfg_base+1); 531 info->enabled = (reg & 0x80) && (reg & 0x01); 532 IRDA_DEBUG(2, "%s(), probing enabled=%d\n", __func__, info->enabled); 533 534 /* Read Power Status */ 535 outb(0x22, cfg_base); 536 reg = inb(cfg_base+1); 537 info->suspended = (reg & 0x20); 538 IRDA_DEBUG(2, "%s(), probing suspended=%d\n", __func__, info->suspended); 539 540 /* Exit configuration */ 541 outb(0xbb, cfg_base); 542 543 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__); 544 545 return 0; 546} 547 548/* 549 * Function ali_ircc_setup (info) 550 * 551 * Set FIR FIFO and DMA Threshold 552 * Returns non-negative on success. 553 * 554 */ 555static int ali_ircc_setup(chipio_t *info) 556{ 557 unsigned char tmp; 558 int version; 559 int iobase = info->fir_base; 560 561 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__); 562 563 /* Locking comments : 564 * Most operations here need to be protected. We are called before 565 * the device instance is created in ali_ircc_open(), therefore 566 * nobody can bother us - Jean II */ 567 568 /* Switch to FIR space */ 569 SIR2FIR(iobase); 570 571 /* Master Reset */ 572 outb(0x40, iobase+FIR_MCR); // benjamin 2000/11/30 11:45AM 573 574 /* Read FIR ID Version Register */ 575 switch_bank(iobase, BANK3); 576 version = inb(iobase+FIR_ID_VR); 577 578 /* Should be 0x00 in the M1535/M1535D */ 579 if(version != 0x00) 580 { 581 IRDA_ERROR("%s, Wrong chip version %02x\n", 582 ALI_IRCC_DRIVER_NAME, version); 583 return -1; 584 } 585 586 /* Set FIR FIFO Threshold Register */ 587 switch_bank(iobase, BANK1); 588 outb(RX_FIFO_Threshold, iobase+FIR_FIFO_TR); 589 590 /* Set FIR DMA Threshold Register */ 591 outb(RX_DMA_Threshold, iobase+FIR_DMA_TR); 592 593 /* CRC enable */ 594 switch_bank(iobase, BANK2); 595 outb(inb(iobase+FIR_IRDA_CR) | IRDA_CR_CRC, iobase+FIR_IRDA_CR); 596 597 /* NDIS driver set TX Length here BANK2 Alias 3, Alias4*/ 598 599 /* Switch to Bank 0 */ 600 switch_bank(iobase, BANK0); 601 602 tmp = inb(iobase+FIR_LCR_B); 603 tmp &=~0x20; // disable SIP 604 tmp |= 0x80; // these two steps make RX mode 605 tmp &= 0xbf; 606 outb(tmp, iobase+FIR_LCR_B); 607 608 /* Disable Interrupt */ 609 outb(0x00, iobase+FIR_IER); 610 611 612 /* Switch to SIR space */ 613 FIR2SIR(iobase); 614 615 IRDA_MESSAGE("%s, driver loaded (Benjamin Kong)\n", 616 ALI_IRCC_DRIVER_NAME); 617 618 /* Enable receive interrupts */ 619 // outb(UART_IER_RDI, iobase+UART_IER); //benjamin 2000/11/23 01:25PM 620 // Turn on the interrupts in ali_ircc_net_open 621 622 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__); 623 624 return 0; 625} 626 627/* 628 * Function ali_ircc_read_dongle_id (int index, info) 629 * 630 * Try to read dongle identification. This procedure needs to be executed 631 * once after power-on/reset. It also needs to be used whenever you suspect 632 * that the user may have plugged/unplugged the IrDA Dongle. 633 */ 634static int ali_ircc_read_dongle_id (int i, chipio_t *info) 635{ 636 int dongle_id, reg; 637 int cfg_base = info->cfg_base; 638 639 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__); 640 641 /* Enter Configuration */ 642 outb(chips[i].entr1, cfg_base); 643 outb(chips[i].entr2, cfg_base); 644 645 /* Select Logical Device 5 Registers (UART2) */ 646 outb(0x07, cfg_base); 647 outb(0x05, cfg_base+1); 648 649 /* Read Dongle ID */ 650 outb(0xf0, cfg_base); 651 reg = inb(cfg_base+1); 652 dongle_id = ((reg>>6)&0x02) | ((reg>>5)&0x01); 653 IRDA_DEBUG(2, "%s(), probing dongle_id=%d, dongle_types=%s\n", __func__, 654 dongle_id, dongle_types[dongle_id]); 655 656 /* Exit configuration */ 657 outb(0xbb, cfg_base); 658 659 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__); 660 661 return dongle_id; 662} 663 664/* 665 * Function ali_ircc_interrupt (irq, dev_id, regs) 666 * 667 * An interrupt from the chip has arrived. Time to do some work 668 * 669 */ 670static irqreturn_t ali_ircc_interrupt(int irq, void *dev_id) 671{ 672 struct net_device *dev = dev_id; 673 struct ali_ircc_cb *self; 674 int ret; 675 676 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__); 677 678 self = netdev_priv(dev); 679 680 spin_lock(&self->lock); 681 682 /* Dispatch interrupt handler for the current speed */ 683 if (self->io.speed > 115200) 684 ret = ali_ircc_fir_interrupt(self); 685 else 686 ret = ali_ircc_sir_interrupt(self); 687 688 spin_unlock(&self->lock); 689 690 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__); 691 return ret; 692} 693/* 694 * Function ali_ircc_fir_interrupt(irq, struct ali_ircc_cb *self) 695 * 696 * Handle MIR/FIR interrupt 697 * 698 */ 699static irqreturn_t ali_ircc_fir_interrupt(struct ali_ircc_cb *self) 700{ 701 __u8 eir, OldMessageCount; 702 int iobase, tmp; 703 704 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__); 705 706 iobase = self->io.fir_base; 707 708 switch_bank(iobase, BANK0); 709 self->InterruptID = inb(iobase+FIR_IIR); 710 self->BusStatus = inb(iobase+FIR_BSR); 711 712 OldMessageCount = (self->LineStatus + 1) & 0x07; 713 self->LineStatus = inb(iobase+FIR_LSR); 714 //self->ier = inb(iobase+FIR_IER); 2000/12/1 04:32PM 715 eir = self->InterruptID & self->ier; /* Mask out the interesting ones */ 716 717 IRDA_DEBUG(1, "%s(), self->InterruptID = %x\n", __func__,self->InterruptID); 718 IRDA_DEBUG(1, "%s(), self->LineStatus = %x\n", __func__,self->LineStatus); 719 IRDA_DEBUG(1, "%s(), self->ier = %x\n", __func__,self->ier); 720 IRDA_DEBUG(1, "%s(), eir = %x\n", __func__,eir); 721 722 /* Disable interrupts */ 723 SetCOMInterrupts(self, FALSE); 724 725 /* Tx or Rx Interrupt */ 726 727 if (eir & IIR_EOM) 728 { 729 if (self->io.direction == IO_XMIT) /* TX */ 730 { 731 IRDA_DEBUG(1, "%s(), ******* IIR_EOM (Tx) *******\n", __func__); 732 733 if(ali_ircc_dma_xmit_complete(self)) 734 { 735 if (irda_device_txqueue_empty(self->netdev)) 736 { 737 /* Prepare for receive */ 738 ali_ircc_dma_receive(self); 739 self->ier = IER_EOM; 740 } 741 } 742 else 743 { 744 self->ier = IER_EOM; 745 } 746 747 } 748 else /* RX */ 749 { 750 IRDA_DEBUG(1, "%s(), ******* IIR_EOM (Rx) *******\n", __func__); 751 752 if(OldMessageCount > ((self->LineStatus+1) & 0x07)) 753 { 754 self->rcvFramesOverflow = TRUE; 755 IRDA_DEBUG(1, "%s(), ******* self->rcvFramesOverflow = TRUE ********\n", __func__); 756 } 757 758 if (ali_ircc_dma_receive_complete(self)) 759 { 760 IRDA_DEBUG(1, "%s(), ******* receive complete ********\n", __func__); 761 762 self->ier = IER_EOM; 763 } 764 else 765 { 766 IRDA_DEBUG(1, "%s(), ******* Not receive complete ********\n", __func__); 767 768 self->ier = IER_EOM | IER_TIMER; 769 } 770 771 } 772 } 773 /* Timer Interrupt */ 774 else if (eir & IIR_TIMER) 775 { 776 if(OldMessageCount > ((self->LineStatus+1) & 0x07)) 777 { 778 self->rcvFramesOverflow = TRUE; 779 IRDA_DEBUG(1, "%s(), ******* self->rcvFramesOverflow = TRUE *******\n", __func__); 780 } 781 /* Disable Timer */ 782 switch_bank(iobase, BANK1); 783 tmp = inb(iobase+FIR_CR); 784 outb( tmp& ~CR_TIMER_EN, iobase+FIR_CR); 785 786 /* Check if this is a Tx timer interrupt */ 787 if (self->io.direction == IO_XMIT) 788 { 789 ali_ircc_dma_xmit(self); 790 791 /* Interrupt on EOM */ 792 self->ier = IER_EOM; 793 794 } 795 else /* Rx */ 796 { 797 if(ali_ircc_dma_receive_complete(self)) 798 { 799 self->ier = IER_EOM; 800 } 801 else 802 { 803 self->ier = IER_EOM | IER_TIMER; 804 } 805 } 806 } 807 808 /* Restore Interrupt */ 809 SetCOMInterrupts(self, TRUE); 810 811 IRDA_DEBUG(1, "%s(), ----------------- End ---------------\n", __func__); 812 return IRQ_RETVAL(eir); 813} 814 815/* 816 * Function ali_ircc_sir_interrupt (irq, self, eir) 817 * 818 * Handle SIR interrupt 819 * 820 */ 821static irqreturn_t ali_ircc_sir_interrupt(struct ali_ircc_cb *self) 822{ 823 int iobase; 824 int iir, lsr; 825 826 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__); 827 828 iobase = self->io.sir_base; 829 830 iir = inb(iobase+UART_IIR) & UART_IIR_ID; 831 if (iir) { 832 /* Clear interrupt */ 833 lsr = inb(iobase+UART_LSR); 834 835 IRDA_DEBUG(4, "%s(), iir=%02x, lsr=%02x, iobase=%#x\n", __func__, 836 iir, lsr, iobase); 837 838 switch (iir) 839 { 840 case UART_IIR_RLSI: 841 IRDA_DEBUG(2, "%s(), RLSI\n", __func__); 842 break; 843 case UART_IIR_RDI: 844 /* Receive interrupt */ 845 ali_ircc_sir_receive(self); 846 break; 847 case UART_IIR_THRI: 848 if (lsr & UART_LSR_THRE) 849 { 850 /* Transmitter ready for data */ 851 ali_ircc_sir_write_wakeup(self); 852 } 853 break; 854 default: 855 IRDA_DEBUG(0, "%s(), unhandled IIR=%#x\n", __func__, iir); 856 break; 857 } 858 859 } 860 861 862 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__); 863 864 return IRQ_RETVAL(iir); 865} 866 867 868/* 869 * Function ali_ircc_sir_receive (self) 870 * 871 * Receive one frame from the infrared port 872 * 873 */ 874static void ali_ircc_sir_receive(struct ali_ircc_cb *self) 875{ 876 int boguscount = 0; 877 int iobase; 878 879 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__); 880 IRDA_ASSERT(self != NULL, return;); 881 882 iobase = self->io.sir_base; 883 884 /* 885 * Receive all characters in Rx FIFO, unwrap and unstuff them. 886 * async_unwrap_char will deliver all found frames 887 */ 888 do { 889 async_unwrap_char(self->netdev, &self->netdev->stats, &self->rx_buff, 890 inb(iobase+UART_RX)); 891 892 /* Make sure we don't stay here too long */ 893 if (boguscount++ > 32) { 894 IRDA_DEBUG(2,"%s(), breaking!\n", __func__); 895 break; 896 } 897 } while (inb(iobase+UART_LSR) & UART_LSR_DR); 898 899 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ ); 900} 901 902/* 903 * Function ali_ircc_sir_write_wakeup (tty) 904 * 905 * Called by the driver when there's room for more data. If we have 906 * more packets to send, we send them here. 907 * 908 */ 909static void ali_ircc_sir_write_wakeup(struct ali_ircc_cb *self) 910{ 911 int actual = 0; 912 int iobase; 913 914 IRDA_ASSERT(self != NULL, return;); 915 916 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ ); 917 918 iobase = self->io.sir_base; 919 920 /* Finished with frame? */ 921 if (self->tx_buff.len > 0) 922 { 923 /* Write data left in transmit buffer */ 924 actual = ali_ircc_sir_write(iobase, self->io.fifo_size, 925 self->tx_buff.data, self->tx_buff.len); 926 self->tx_buff.data += actual; 927 self->tx_buff.len -= actual; 928 } 929 else 930 { 931 if (self->new_speed) 932 { 933 /* We must wait until all data are gone */ 934 while(!(inb(iobase+UART_LSR) & UART_LSR_TEMT)) 935 IRDA_DEBUG(1, "%s(), UART_LSR_THRE\n", __func__ ); 936 937 IRDA_DEBUG(1, "%s(), Changing speed! self->new_speed = %d\n", __func__ , self->new_speed); 938 ali_ircc_change_speed(self, self->new_speed); 939 self->new_speed = 0; 940 941 // benjamin 2000/11/10 06:32PM 942 if (self->io.speed > 115200) 943 { 944 IRDA_DEBUG(2, "%s(), ali_ircc_change_speed from UART_LSR_TEMT\n", __func__ ); 945 946 self->ier = IER_EOM; 947 // SetCOMInterrupts(self, TRUE); 948 return; 949 } 950 } 951 else 952 { 953 netif_wake_queue(self->netdev); 954 } 955 956 self->netdev->stats.tx_packets++; 957 958 /* Turn on receive interrupts */ 959 outb(UART_IER_RDI, iobase+UART_IER); 960 } 961 962 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ ); 963} 964 965static void ali_ircc_change_speed(struct ali_ircc_cb *self, __u32 baud) 966{ 967 struct net_device *dev = self->netdev; 968 int iobase; 969 970 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ ); 971 972 IRDA_DEBUG(2, "%s(), setting speed = %d\n", __func__ , baud); 973 974 /* This function *must* be called with irq off and spin-lock. 975 * - Jean II */ 976 977 iobase = self->io.fir_base; 978 979 SetCOMInterrupts(self, FALSE); // 2000/11/24 11:43AM 980 981 /* Go to MIR, FIR Speed */ 982 if (baud > 115200) 983 { 984 985 986 ali_ircc_fir_change_speed(self, baud); 987 988 /* Install FIR xmit handler*/ 989 dev->netdev_ops = &ali_ircc_fir_ops; 990 991 /* Enable Interuupt */ 992 self->ier = IER_EOM; // benjamin 2000/11/20 07:24PM 993 994 /* Be ready for incoming frames */ 995 ali_ircc_dma_receive(self); // benajmin 2000/11/8 07:46PM not complete 996 } 997 /* Go to SIR Speed */ 998 else 999 { 1000 ali_ircc_sir_change_speed(self, baud); 1001 1002 /* Install SIR xmit handler*/ 1003 dev->netdev_ops = &ali_ircc_sir_ops; 1004 } 1005 1006 1007 SetCOMInterrupts(self, TRUE); // 2000/11/24 11:43AM 1008 1009 netif_wake_queue(self->netdev); 1010 1011 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ ); 1012} 1013 1014static void ali_ircc_fir_change_speed(struct ali_ircc_cb *priv, __u32 baud) 1015{ 1016 1017 int iobase; 1018 struct ali_ircc_cb *self = priv; 1019 struct net_device *dev; 1020 1021 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ ); 1022 1023 IRDA_ASSERT(self != NULL, return;); 1024 1025 dev = self->netdev; 1026 iobase = self->io.fir_base; 1027 1028 IRDA_DEBUG(1, "%s(), self->io.speed = %d, change to speed = %d\n", __func__ ,self->io.speed,baud); 1029 1030 /* Come from SIR speed */ 1031 if(self->io.speed <=115200) 1032 { 1033 SIR2FIR(iobase); 1034 } 1035 1036 /* Update accounting for new speed */ 1037 self->io.speed = baud; 1038 1039 // Set Dongle Speed mode 1040 ali_ircc_change_dongle_speed(self, baud); 1041 1042 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ ); 1043} 1044 1045/* 1046 * Function ali_sir_change_speed (self, speed) 1047 * 1048 * Set speed of IrDA port to specified baudrate 1049 * 1050 */ 1051static void ali_ircc_sir_change_speed(struct ali_ircc_cb *priv, __u32 speed) 1052{ 1053 struct ali_ircc_cb *self = priv; 1054 unsigned long flags; 1055 int iobase; 1056 int fcr; /* FIFO control reg */ 1057 int lcr; /* Line control reg */ 1058 int divisor; 1059 1060 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ ); 1061 1062 IRDA_DEBUG(1, "%s(), Setting speed to: %d\n", __func__ , speed); 1063 1064 IRDA_ASSERT(self != NULL, return;); 1065 1066 iobase = self->io.sir_base; 1067 1068 /* Come from MIR or FIR speed */ 1069 if(self->io.speed >115200) 1070 { 1071 // Set Dongle Speed mode first 1072 ali_ircc_change_dongle_speed(self, speed); 1073 1074 FIR2SIR(iobase); 1075 } 1076 1077 // Clear Line and Auxiluary status registers 2000/11/24 11:47AM 1078 1079 inb(iobase+UART_LSR); 1080 inb(iobase+UART_SCR); 1081 1082 /* Update accounting for new speed */ 1083 self->io.speed = speed; 1084 1085 spin_lock_irqsave(&self->lock, flags); 1086 1087 divisor = 115200/speed; 1088 1089 fcr = UART_FCR_ENABLE_FIFO; 1090 1091 /* 1092 * Use trigger level 1 to avoid 3 ms. timeout delay at 9600 bps, and 1093 * almost 1,7 ms at 19200 bps. At speeds above that we can just forget 1094 * about this timeout since it will always be fast enough. 1095 */ 1096 if (self->io.speed < 38400) 1097 fcr |= UART_FCR_TRIGGER_1; 1098 else 1099 fcr |= UART_FCR_TRIGGER_14; 1100 1101 /* IrDA ports use 8N1 */ 1102 lcr = UART_LCR_WLEN8; 1103 1104 outb(UART_LCR_DLAB | lcr, iobase+UART_LCR); /* Set DLAB */ 1105 outb(divisor & 0xff, iobase+UART_DLL); /* Set speed */ 1106 outb(divisor >> 8, iobase+UART_DLM); 1107 outb(lcr, iobase+UART_LCR); /* Set 8N1 */ 1108 outb(fcr, iobase+UART_FCR); /* Enable FIFO's */ 1109 1110 /* without this, the connection will be broken after come back from FIR speed, 1111 but with this, the SIR connection is harder to established */ 1112 outb((UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2), iobase+UART_MCR); 1113 1114 spin_unlock_irqrestore(&self->lock, flags); 1115 1116 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ ); 1117} 1118 1119static void ali_ircc_change_dongle_speed(struct ali_ircc_cb *priv, int speed) 1120{ 1121 1122 struct ali_ircc_cb *self = priv; 1123 int iobase,dongle_id; 1124 int tmp = 0; 1125 1126 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ ); 1127 1128 iobase = self->io.fir_base; /* or iobase = self->io.sir_base; */ 1129 dongle_id = self->io.dongle_id; 1130 1131 /* We are already locked, no need to do it again */ 1132 1133 IRDA_DEBUG(1, "%s(), Set Speed for %s , Speed = %d\n", __func__ , dongle_types[dongle_id], speed); 1134 1135 switch_bank(iobase, BANK2); 1136 tmp = inb(iobase+FIR_IRDA_CR); 1137 1138 /* IBM type dongle */ 1139 if(dongle_id == 0) 1140 { 1141 if(speed == 4000000) 1142 { 1143 // __ __ 1144 // SD/MODE __| |__ __ 1145 // __ __ 1146 // IRTX __ __| |__ 1147 // T1 T2 T3 T4 T5 1148 1149 tmp &= ~IRDA_CR_HDLC; // HDLC=0 1150 tmp |= IRDA_CR_CRC; // CRC=1 1151 1152 switch_bank(iobase, BANK2); 1153 outb(tmp, iobase+FIR_IRDA_CR); 1154 1155 // T1 -> SD/MODE:0 IRTX:0 1156 tmp &= ~0x09; 1157 tmp |= 0x02; 1158 outb(tmp, iobase+FIR_IRDA_CR); 1159 udelay(2); 1160 1161 // T2 -> SD/MODE:1 IRTX:0 1162 tmp &= ~0x01; 1163 tmp |= 0x0a; 1164 outb(tmp, iobase+FIR_IRDA_CR); 1165 udelay(2); 1166 1167 // T3 -> SD/MODE:1 IRTX:1 1168 tmp |= 0x0b; 1169 outb(tmp, iobase+FIR_IRDA_CR); 1170 udelay(2); 1171 1172 // T4 -> SD/MODE:0 IRTX:1 1173 tmp &= ~0x08; 1174 tmp |= 0x03; 1175 outb(tmp, iobase+FIR_IRDA_CR); 1176 udelay(2); 1177 1178 // T5 -> SD/MODE:0 IRTX:0 1179 tmp &= ~0x09; 1180 tmp |= 0x02; 1181 outb(tmp, iobase+FIR_IRDA_CR); 1182 udelay(2); 1183 1184 // reset -> Normal TX output Signal 1185 outb(tmp & ~0x02, iobase+FIR_IRDA_CR); 1186 } 1187 else /* speed <=1152000 */ 1188 { 1189 // __ 1190 // SD/MODE __| |__ 1191 // 1192 // IRTX ________ 1193 // T1 T2 T3 1194 1195 /* MIR 115200, 57600 */ 1196 if (speed==1152000) 1197 { 1198 tmp |= 0xA0; //HDLC=1, 1.152Mbps=1 1199 } 1200 else 1201 { 1202 tmp &=~0x80; //HDLC 0.576Mbps 1203 tmp |= 0x20; //HDLC=1, 1204 } 1205 1206 tmp |= IRDA_CR_CRC; // CRC=1 1207 1208 switch_bank(iobase, BANK2); 1209 outb(tmp, iobase+FIR_IRDA_CR); 1210 1211 /* MIR 115200, 57600 */ 1212 1213 //switch_bank(iobase, BANK2); 1214 // T1 -> SD/MODE:0 IRTX:0 1215 tmp &= ~0x09; 1216 tmp |= 0x02; 1217 outb(tmp, iobase+FIR_IRDA_CR); 1218 udelay(2); 1219 1220 // T2 -> SD/MODE:1 IRTX:0 1221 tmp &= ~0x01; 1222 tmp |= 0x0a; 1223 outb(tmp, iobase+FIR_IRDA_CR); 1224 1225 // T3 -> SD/MODE:0 IRTX:0 1226 tmp &= ~0x09; 1227 tmp |= 0x02; 1228 outb(tmp, iobase+FIR_IRDA_CR); 1229 udelay(2); 1230 1231 // reset -> Normal TX output Signal 1232 outb(tmp & ~0x02, iobase+FIR_IRDA_CR); 1233 } 1234 } 1235 else if (dongle_id == 1) /* HP HDSL-3600 */ 1236 { 1237 switch(speed) 1238 { 1239 case 4000000: 1240 tmp &= ~IRDA_CR_HDLC; // HDLC=0 1241 break; 1242 1243 case 1152000: 1244 tmp |= 0xA0; // HDLC=1, 1.152Mbps=1 1245 break; 1246 1247 case 576000: 1248 tmp &=~0x80; // HDLC 0.576Mbps 1249 tmp |= 0x20; // HDLC=1, 1250 break; 1251 } 1252 1253 tmp |= IRDA_CR_CRC; // CRC=1 1254 1255 switch_bank(iobase, BANK2); 1256 outb(tmp, iobase+FIR_IRDA_CR); 1257 } 1258 else /* HP HDSL-1100 */ 1259 { 1260 if(speed <= 115200) /* SIR */ 1261 { 1262 1263 tmp &= ~IRDA_CR_FIR_SIN; // HP sin select = 0 1264 1265 switch_bank(iobase, BANK2); 1266 outb(tmp, iobase+FIR_IRDA_CR); 1267 } 1268 else /* MIR FIR */ 1269 { 1270 1271 switch(speed) 1272 { 1273 case 4000000: 1274 tmp &= ~IRDA_CR_HDLC; // HDLC=0 1275 break; 1276 1277 case 1152000: 1278 tmp |= 0xA0; // HDLC=1, 1.152Mbps=1 1279 break; 1280 1281 case 576000: 1282 tmp &=~0x80; // HDLC 0.576Mbps 1283 tmp |= 0x20; // HDLC=1, 1284 break; 1285 } 1286 1287 tmp |= IRDA_CR_CRC; // CRC=1 1288 tmp |= IRDA_CR_FIR_SIN; // HP sin select = 1 1289 1290 switch_bank(iobase, BANK2); 1291 outb(tmp, iobase+FIR_IRDA_CR); 1292 } 1293 } 1294 1295 switch_bank(iobase, BANK0); 1296 1297 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ ); 1298} 1299 1300/* 1301 * Function ali_ircc_sir_write (driver) 1302 * 1303 * Fill Tx FIFO with transmit data 1304 * 1305 */ 1306static int ali_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len) 1307{ 1308 int actual = 0; 1309 1310 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ ); 1311 1312 /* Tx FIFO should be empty! */ 1313 if (!(inb(iobase+UART_LSR) & UART_LSR_THRE)) { 1314 IRDA_DEBUG(0, "%s(), failed, fifo not empty!\n", __func__ ); 1315 return 0; 1316 } 1317 1318 /* Fill FIFO with current frame */ 1319 while ((fifo_size-- > 0) && (actual < len)) { 1320 /* Transmit next byte */ 1321 outb(buf[actual], iobase+UART_TX); 1322 1323 actual++; 1324 } 1325 1326 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ ); 1327 return actual; 1328} 1329 1330/* 1331 * Function ali_ircc_net_open (dev) 1332 * 1333 * Start the device 1334 * 1335 */ 1336static int ali_ircc_net_open(struct net_device *dev) 1337{ 1338 struct ali_ircc_cb *self; 1339 int iobase; 1340 char hwname[32]; 1341 1342 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ ); 1343 1344 IRDA_ASSERT(dev != NULL, return -1;); 1345 1346 self = netdev_priv(dev); 1347 1348 IRDA_ASSERT(self != NULL, return 0;); 1349 1350 iobase = self->io.fir_base; 1351 1352 /* Request IRQ and install Interrupt Handler */ 1353 if (request_irq(self->io.irq, ali_ircc_interrupt, 0, dev->name, dev)) 1354 { 1355 IRDA_WARNING("%s, unable to allocate irq=%d\n", 1356 ALI_IRCC_DRIVER_NAME, 1357 self->io.irq); 1358 return -EAGAIN; 1359 } 1360 1361 /* 1362 * Always allocate the DMA channel after the IRQ, and clean up on 1363 * failure. 1364 */ 1365 if (request_dma(self->io.dma, dev->name)) { 1366 IRDA_WARNING("%s, unable to allocate dma=%d\n", 1367 ALI_IRCC_DRIVER_NAME, 1368 self->io.dma); 1369 free_irq(self->io.irq, dev); 1370 return -EAGAIN; 1371 } 1372 1373 /* Turn on interrups */ 1374 outb(UART_IER_RDI , iobase+UART_IER); 1375 1376 /* Ready to play! */ 1377 netif_start_queue(dev); //benjamin by irport 1378 1379 /* Give self a hardware name */ 1380 sprintf(hwname, "ALI-FIR @ 0x%03x", self->io.fir_base); 1381 1382 /* 1383 * Open new IrLAP layer instance, now that everything should be 1384 * initialized properly 1385 */ 1386 self->irlap = irlap_open(dev, &self->qos, hwname); 1387 1388 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ ); 1389 1390 return 0; 1391} 1392 1393/* 1394 * Function ali_ircc_net_close (dev) 1395 * 1396 * Stop the device 1397 * 1398 */ 1399static int ali_ircc_net_close(struct net_device *dev) 1400{ 1401 1402 struct ali_ircc_cb *self; 1403 //int iobase; 1404 1405 IRDA_DEBUG(4, "%s(), ---------------- Start ----------------\n", __func__ ); 1406 1407 IRDA_ASSERT(dev != NULL, return -1;); 1408 1409 self = netdev_priv(dev); 1410 IRDA_ASSERT(self != NULL, return 0;); 1411 1412 /* Stop device */ 1413 netif_stop_queue(dev); 1414 1415 /* Stop and remove instance of IrLAP */ 1416 if (self->irlap) 1417 irlap_close(self->irlap); 1418 self->irlap = NULL; 1419 1420 disable_dma(self->io.dma); 1421 1422 /* Disable interrupts */ 1423 SetCOMInterrupts(self, FALSE); 1424 1425 free_irq(self->io.irq, dev); 1426 free_dma(self->io.dma); 1427 1428 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ ); 1429 1430 return 0; 1431} 1432 1433/* 1434 * Function ali_ircc_fir_hard_xmit (skb, dev) 1435 * 1436 * Transmit the frame 1437 * 1438 */ 1439static netdev_tx_t ali_ircc_fir_hard_xmit(struct sk_buff *skb, 1440 struct net_device *dev) 1441{ 1442 struct ali_ircc_cb *self; 1443 unsigned long flags; 1444 int iobase; 1445 __u32 speed; 1446 int mtt, diff; 1447 1448 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ ); 1449 1450 self = netdev_priv(dev); 1451 iobase = self->io.fir_base; 1452 1453 netif_stop_queue(dev); 1454 1455 /* Make sure tests *& speed change are atomic */ 1456 spin_lock_irqsave(&self->lock, flags); 1457 1458 /* Note : you should make sure that speed changes are not going 1459 * to corrupt any outgoing frame. Look at nsc-ircc for the gory 1460 * details - Jean II */ 1461 1462 /* Check if we need to change the speed */ 1463 speed = irda_get_next_speed(skb); 1464 if ((speed != self->io.speed) && (speed != -1)) { 1465 /* Check for empty frame */ 1466 if (!skb->len) { 1467 ali_ircc_change_speed(self, speed); 1468 dev->trans_start = jiffies; 1469 spin_unlock_irqrestore(&self->lock, flags); 1470 dev_kfree_skb(skb); 1471 return NETDEV_TX_OK; 1472 } else 1473 self->new_speed = speed; 1474 } 1475 1476 /* Register and copy this frame to DMA memory */ 1477 self->tx_fifo.queue[self->tx_fifo.free].start = self->tx_fifo.tail; 1478 self->tx_fifo.queue[self->tx_fifo.free].len = skb->len; 1479 self->tx_fifo.tail += skb->len; 1480 1481 dev->stats.tx_bytes += skb->len; 1482 1483 skb_copy_from_linear_data(skb, self->tx_fifo.queue[self->tx_fifo.free].start, 1484 skb->len); 1485 self->tx_fifo.len++; 1486 self->tx_fifo.free++; 1487 1488 /* Start transmit only if there is currently no transmit going on */ 1489 if (self->tx_fifo.len == 1) 1490 { 1491 /* Check if we must wait the min turn time or not */ 1492 mtt = irda_get_mtt(skb); 1493 1494 if (mtt) 1495 { 1496 /* Check how much time we have used already */ 1497 do_gettimeofday(&self->now); 1498 1499 diff = self->now.tv_usec - self->stamp.tv_usec; 1500 /* self->stamp is set from ali_ircc_dma_receive_complete() */ 1501 1502 IRDA_DEBUG(1, "%s(), ******* diff = %d *******\n", __func__ , diff); 1503 1504 if (diff < 0) 1505 diff += 1000000; 1506 1507 /* Check if the mtt is larger than the time we have 1508 * already used by all the protocol processing 1509 */ 1510 if (mtt > diff) 1511 { 1512 mtt -= diff; 1513 1514 /* 1515 * Use timer if delay larger than 1000 us, and 1516 * use udelay for smaller values which should 1517 * be acceptable 1518 */ 1519 if (mtt > 500) 1520 { 1521 /* Adjust for timer resolution */ 1522 mtt = (mtt+250) / 500; /* 4 discard, 5 get advanced, Let's round off */ 1523 1524 IRDA_DEBUG(1, "%s(), ************** mtt = %d ***********\n", __func__ , mtt); 1525 1526 /* Setup timer */ 1527 if (mtt == 1) /* 500 us */ 1528 { 1529 switch_bank(iobase, BANK1); 1530 outb(TIMER_IIR_500, iobase+FIR_TIMER_IIR); 1531 } 1532 else if (mtt == 2) /* 1 ms */ 1533 { 1534 switch_bank(iobase, BANK1); 1535 outb(TIMER_IIR_1ms, iobase+FIR_TIMER_IIR); 1536 } 1537 else /* > 2ms -> 4ms */ 1538 { 1539 switch_bank(iobase, BANK1); 1540 outb(TIMER_IIR_2ms, iobase+FIR_TIMER_IIR); 1541 } 1542 1543 1544 /* Start timer */ 1545 outb(inb(iobase+FIR_CR) | CR_TIMER_EN, iobase+FIR_CR); 1546 self->io.direction = IO_XMIT; 1547 1548 /* Enable timer interrupt */ 1549 self->ier = IER_TIMER; 1550 SetCOMInterrupts(self, TRUE); 1551 1552 /* Timer will take care of the rest */ 1553 goto out; 1554 } 1555 else 1556 udelay(mtt); 1557 } // if (if (mtt > diff) 1558 }// if (mtt) 1559 1560 /* Enable EOM interrupt */ 1561 self->ier = IER_EOM; 1562 SetCOMInterrupts(self, TRUE); 1563 1564 /* Transmit frame */ 1565 ali_ircc_dma_xmit(self); 1566 } // if (self->tx_fifo.len == 1) 1567 1568 out: 1569 1570 /* Not busy transmitting anymore if window is not full */ 1571 if (self->tx_fifo.free < MAX_TX_WINDOW) 1572 netif_wake_queue(self->netdev); 1573 1574 /* Restore bank register */ 1575 switch_bank(iobase, BANK0); 1576 1577 dev->trans_start = jiffies; 1578 spin_unlock_irqrestore(&self->lock, flags); 1579 dev_kfree_skb(skb); 1580 1581 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ ); 1582 return NETDEV_TX_OK; 1583} 1584 1585 1586static void ali_ircc_dma_xmit(struct ali_ircc_cb *self) 1587{ 1588 int iobase, tmp; 1589 unsigned char FIFO_OPTI, Hi, Lo; 1590 1591 1592 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ ); 1593 1594 iobase = self->io.fir_base; 1595 1596 /* FIFO threshold , this method comes from NDIS5 code */ 1597 1598 if(self->tx_fifo.queue[self->tx_fifo.ptr].len < TX_FIFO_Threshold) 1599 FIFO_OPTI = self->tx_fifo.queue[self->tx_fifo.ptr].len-1; 1600 else 1601 FIFO_OPTI = TX_FIFO_Threshold; 1602 1603 /* Disable DMA */ 1604 switch_bank(iobase, BANK1); 1605 outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR); 1606 1607 self->io.direction = IO_XMIT; 1608 1609 irda_setup_dma(self->io.dma, 1610 ((u8 *)self->tx_fifo.queue[self->tx_fifo.ptr].start - 1611 self->tx_buff.head) + self->tx_buff_dma, 1612 self->tx_fifo.queue[self->tx_fifo.ptr].len, 1613 DMA_TX_MODE); 1614 1615 /* Reset Tx FIFO */ 1616 switch_bank(iobase, BANK0); 1617 outb(LCR_A_FIFO_RESET, iobase+FIR_LCR_A); 1618 1619 /* Set Tx FIFO threshold */ 1620 if (self->fifo_opti_buf!=FIFO_OPTI) 1621 { 1622 switch_bank(iobase, BANK1); 1623 outb(FIFO_OPTI, iobase+FIR_FIFO_TR) ; 1624 self->fifo_opti_buf=FIFO_OPTI; 1625 } 1626 1627 /* Set Tx DMA threshold */ 1628 switch_bank(iobase, BANK1); 1629 outb(TX_DMA_Threshold, iobase+FIR_DMA_TR); 1630 1631 /* Set max Tx frame size */ 1632 Hi = (self->tx_fifo.queue[self->tx_fifo.ptr].len >> 8) & 0x0f; 1633 Lo = self->tx_fifo.queue[self->tx_fifo.ptr].len & 0xff; 1634 switch_bank(iobase, BANK2); 1635 outb(Hi, iobase+FIR_TX_DSR_HI); 1636 outb(Lo, iobase+FIR_TX_DSR_LO); 1637 1638 /* Disable SIP , Disable Brick Wall (we don't support in TX mode), Change to TX mode */ 1639 switch_bank(iobase, BANK0); 1640 tmp = inb(iobase+FIR_LCR_B); 1641 tmp &= ~0x20; // Disable SIP 1642 outb(((unsigned char)(tmp & 0x3f) | LCR_B_TX_MODE) & ~LCR_B_BW, iobase+FIR_LCR_B); 1643 IRDA_DEBUG(1, "%s(), *** Change to TX mode: FIR_LCR_B = 0x%x ***\n", __func__ , inb(iobase+FIR_LCR_B)); 1644 1645 outb(0, iobase+FIR_LSR); 1646 1647 /* Enable DMA and Burst Mode */ 1648 switch_bank(iobase, BANK1); 1649 outb(inb(iobase+FIR_CR) | CR_DMA_EN | CR_DMA_BURST, iobase+FIR_CR); 1650 1651 switch_bank(iobase, BANK0); 1652 1653 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ ); 1654} 1655 1656static int ali_ircc_dma_xmit_complete(struct ali_ircc_cb *self) 1657{ 1658 int iobase; 1659 int ret = TRUE; 1660 1661 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ ); 1662 1663 iobase = self->io.fir_base; 1664 1665 /* Disable DMA */ 1666 switch_bank(iobase, BANK1); 1667 outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR); 1668 1669 /* Check for underrun! */ 1670 switch_bank(iobase, BANK0); 1671 if((inb(iobase+FIR_LSR) & LSR_FRAME_ABORT) == LSR_FRAME_ABORT) 1672 1673 { 1674 IRDA_ERROR("%s(), ********* LSR_FRAME_ABORT *********\n", __func__); 1675 self->netdev->stats.tx_errors++; 1676 self->netdev->stats.tx_fifo_errors++; 1677 } 1678 else 1679 { 1680 self->netdev->stats.tx_packets++; 1681 } 1682 1683 /* Check if we need to change the speed */ 1684 if (self->new_speed) 1685 { 1686 ali_ircc_change_speed(self, self->new_speed); 1687 self->new_speed = 0; 1688 } 1689 1690 /* Finished with this frame, so prepare for next */ 1691 self->tx_fifo.ptr++; 1692 self->tx_fifo.len--; 1693 1694 /* Any frames to be sent back-to-back? */ 1695 if (self->tx_fifo.len) 1696 { 1697 ali_ircc_dma_xmit(self); 1698 1699 /* Not finished yet! */ 1700 ret = FALSE; 1701 } 1702 else 1703 { /* Reset Tx FIFO info */ 1704 self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0; 1705 self->tx_fifo.tail = self->tx_buff.head; 1706 } 1707 1708 /* Make sure we have room for more frames */ 1709 if (self->tx_fifo.free < MAX_TX_WINDOW) { 1710 /* Not busy transmitting anymore */ 1711 /* Tell the network layer, that we can accept more frames */ 1712 netif_wake_queue(self->netdev); 1713 } 1714 1715 switch_bank(iobase, BANK0); 1716 1717 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ ); 1718 return ret; 1719} 1720 1721/* 1722 * Function ali_ircc_dma_receive (self) 1723 * 1724 * Get ready for receiving a frame. The device will initiate a DMA 1725 * if it starts to receive a frame. 1726 * 1727 */ 1728static int ali_ircc_dma_receive(struct ali_ircc_cb *self) 1729{ 1730 int iobase, tmp; 1731 1732 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ ); 1733 1734 iobase = self->io.fir_base; 1735 1736 /* Reset Tx FIFO info */ 1737 self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0; 1738 self->tx_fifo.tail = self->tx_buff.head; 1739 1740 /* Disable DMA */ 1741 switch_bank(iobase, BANK1); 1742 outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR); 1743 1744 /* Reset Message Count */ 1745 switch_bank(iobase, BANK0); 1746 outb(0x07, iobase+FIR_LSR); 1747 1748 self->rcvFramesOverflow = FALSE; 1749 1750 self->LineStatus = inb(iobase+FIR_LSR) ; 1751 1752 /* Reset Rx FIFO info */ 1753 self->io.direction = IO_RECV; 1754 self->rx_buff.data = self->rx_buff.head; 1755 1756 /* Reset Rx FIFO */ 1757 // switch_bank(iobase, BANK0); 1758 outb(LCR_A_FIFO_RESET, iobase+FIR_LCR_A); 1759 1760 self->st_fifo.len = self->st_fifo.pending_bytes = 0; 1761 self->st_fifo.tail = self->st_fifo.head = 0; 1762 1763 irda_setup_dma(self->io.dma, self->rx_buff_dma, self->rx_buff.truesize, 1764 DMA_RX_MODE); 1765 1766 /* Set Receive Mode,Brick Wall */ 1767 //switch_bank(iobase, BANK0); 1768 tmp = inb(iobase+FIR_LCR_B); 1769 outb((unsigned char)(tmp &0x3f) | LCR_B_RX_MODE | LCR_B_BW , iobase + FIR_LCR_B); // 2000/12/1 05:16PM 1770 IRDA_DEBUG(1, "%s(), *** Change To RX mode: FIR_LCR_B = 0x%x ***\n", __func__ , inb(iobase+FIR_LCR_B)); 1771 1772 /* Set Rx Threshold */ 1773 switch_bank(iobase, BANK1); 1774 outb(RX_FIFO_Threshold, iobase+FIR_FIFO_TR); 1775 outb(RX_DMA_Threshold, iobase+FIR_DMA_TR); 1776 1777 /* Enable DMA and Burst Mode */ 1778 // switch_bank(iobase, BANK1); 1779 outb(CR_DMA_EN | CR_DMA_BURST, iobase+FIR_CR); 1780 1781 switch_bank(iobase, BANK0); 1782 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ ); 1783 return 0; 1784} 1785 1786static int ali_ircc_dma_receive_complete(struct ali_ircc_cb *self) 1787{ 1788 struct st_fifo *st_fifo; 1789 struct sk_buff *skb; 1790 __u8 status, MessageCount; 1791 int len, i, iobase, val; 1792 1793 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ ); 1794 1795 st_fifo = &self->st_fifo; 1796 iobase = self->io.fir_base; 1797 1798 switch_bank(iobase, BANK0); 1799 MessageCount = inb(iobase+ FIR_LSR)&0x07; 1800 1801 if (MessageCount > 0) 1802 IRDA_DEBUG(0, "%s(), Message count = %d,\n", __func__ , MessageCount); 1803 1804 for (i=0; i<=MessageCount; i++) 1805 { 1806 /* Bank 0 */ 1807 switch_bank(iobase, BANK0); 1808 status = inb(iobase+FIR_LSR); 1809 1810 switch_bank(iobase, BANK2); 1811 len = inb(iobase+FIR_RX_DSR_HI) & 0x0f; 1812 len = len << 8; 1813 len |= inb(iobase+FIR_RX_DSR_LO); 1814 1815 IRDA_DEBUG(1, "%s(), RX Length = 0x%.2x,\n", __func__ , len); 1816 IRDA_DEBUG(1, "%s(), RX Status = 0x%.2x,\n", __func__ , status); 1817 1818 if (st_fifo->tail >= MAX_RX_WINDOW) { 1819 IRDA_DEBUG(0, "%s(), window is full!\n", __func__ ); 1820 continue; 1821 } 1822 1823 st_fifo->entries[st_fifo->tail].status = status; 1824 st_fifo->entries[st_fifo->tail].len = len; 1825 st_fifo->pending_bytes += len; 1826 st_fifo->tail++; 1827 st_fifo->len++; 1828 } 1829 1830 for (i=0; i<=MessageCount; i++) 1831 { 1832 /* Get first entry */ 1833 status = st_fifo->entries[st_fifo->head].status; 1834 len = st_fifo->entries[st_fifo->head].len; 1835 st_fifo->pending_bytes -= len; 1836 st_fifo->head++; 1837 st_fifo->len--; 1838 1839 /* Check for errors */ 1840 if ((status & 0xd8) || self->rcvFramesOverflow || (len==0)) 1841 { 1842 IRDA_DEBUG(0,"%s(), ************* RX Errors ************\n", __func__ ); 1843 1844 /* Skip frame */ 1845 self->netdev->stats.rx_errors++; 1846 1847 self->rx_buff.data += len; 1848 1849 if (status & LSR_FIFO_UR) 1850 { 1851 self->netdev->stats.rx_frame_errors++; 1852 IRDA_DEBUG(0,"%s(), ************* FIFO Errors ************\n", __func__ ); 1853 } 1854 if (status & LSR_FRAME_ERROR) 1855 { 1856 self->netdev->stats.rx_frame_errors++; 1857 IRDA_DEBUG(0,"%s(), ************* FRAME Errors ************\n", __func__ ); 1858 } 1859 1860 if (status & LSR_CRC_ERROR) 1861 { 1862 self->netdev->stats.rx_crc_errors++; 1863 IRDA_DEBUG(0,"%s(), ************* CRC Errors ************\n", __func__ ); 1864 } 1865 1866 if(self->rcvFramesOverflow) 1867 { 1868 self->netdev->stats.rx_frame_errors++; 1869 IRDA_DEBUG(0,"%s(), ************* Overran DMA buffer ************\n", __func__ ); 1870 } 1871 if(len == 0) 1872 { 1873 self->netdev->stats.rx_frame_errors++; 1874 IRDA_DEBUG(0,"%s(), ********** Receive Frame Size = 0 *********\n", __func__ ); 1875 } 1876 } 1877 else 1878 { 1879 1880 if (st_fifo->pending_bytes < 32) 1881 { 1882 switch_bank(iobase, BANK0); 1883 val = inb(iobase+FIR_BSR); 1884 if ((val& BSR_FIFO_NOT_EMPTY)== 0x80) 1885 { 1886 IRDA_DEBUG(0, "%s(), ************* BSR_FIFO_NOT_EMPTY ************\n", __func__ ); 1887 1888 /* Put this entry back in fifo */ 1889 st_fifo->head--; 1890 st_fifo->len++; 1891 st_fifo->pending_bytes += len; 1892 st_fifo->entries[st_fifo->head].status = status; 1893 st_fifo->entries[st_fifo->head].len = len; 1894 1895 /* 1896 * DMA not finished yet, so try again 1897 * later, set timer value, resolution 1898 * 500 us 1899 */ 1900 1901 switch_bank(iobase, BANK1); 1902 outb(TIMER_IIR_500, iobase+FIR_TIMER_IIR); // 2001/1/2 05:07PM 1903 1904 /* Enable Timer */ 1905 outb(inb(iobase+FIR_CR) | CR_TIMER_EN, iobase+FIR_CR); 1906 1907 return FALSE; /* I'll be back! */ 1908 } 1909 } 1910 1911 /* 1912 * Remember the time we received this frame, so we can 1913 * reduce the min turn time a bit since we will know 1914 * how much time we have used for protocol processing 1915 */ 1916 do_gettimeofday(&self->stamp); 1917 1918 skb = dev_alloc_skb(len+1); 1919 if (skb == NULL) 1920 { 1921 IRDA_WARNING("%s(), memory squeeze, " 1922 "dropping frame.\n", 1923 __func__); 1924 self->netdev->stats.rx_dropped++; 1925 1926 return FALSE; 1927 } 1928 1929 /* Make sure IP header gets aligned */ 1930 skb_reserve(skb, 1); 1931 1932 /* Copy frame without CRC, CRC is removed by hardware*/ 1933 skb_put(skb, len); 1934 skb_copy_to_linear_data(skb, self->rx_buff.data, len); 1935 1936 /* Move to next frame */ 1937 self->rx_buff.data += len; 1938 self->netdev->stats.rx_bytes += len; 1939 self->netdev->stats.rx_packets++; 1940 1941 skb->dev = self->netdev; 1942 skb_reset_mac_header(skb); 1943 skb->protocol = htons(ETH_P_IRDA); 1944 netif_rx(skb); 1945 } 1946 } 1947 1948 switch_bank(iobase, BANK0); 1949 1950 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ ); 1951 return TRUE; 1952} 1953 1954 1955 1956/* 1957 * Function ali_ircc_sir_hard_xmit (skb, dev) 1958 * 1959 * Transmit the frame! 1960 * 1961 */ 1962static netdev_tx_t ali_ircc_sir_hard_xmit(struct sk_buff *skb, 1963 struct net_device *dev) 1964{ 1965 struct ali_ircc_cb *self; 1966 unsigned long flags; 1967 int iobase; 1968 __u32 speed; 1969 1970 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ ); 1971 1972 IRDA_ASSERT(dev != NULL, return NETDEV_TX_OK;); 1973 1974 self = netdev_priv(dev); 1975 IRDA_ASSERT(self != NULL, return NETDEV_TX_OK;); 1976 1977 iobase = self->io.sir_base; 1978 1979 netif_stop_queue(dev); 1980 1981 /* Make sure tests *& speed change are atomic */ 1982 spin_lock_irqsave(&self->lock, flags); 1983 1984 /* Note : you should make sure that speed changes are not going 1985 * to corrupt any outgoing frame. Look at nsc-ircc for the gory 1986 * details - Jean II */ 1987 1988 /* Check if we need to change the speed */ 1989 speed = irda_get_next_speed(skb); 1990 if ((speed != self->io.speed) && (speed != -1)) { 1991 /* Check for empty frame */ 1992 if (!skb->len) { 1993 ali_ircc_change_speed(self, speed); 1994 dev->trans_start = jiffies; 1995 spin_unlock_irqrestore(&self->lock, flags); 1996 dev_kfree_skb(skb); 1997 return NETDEV_TX_OK; 1998 } else 1999 self->new_speed = speed; 2000 } 2001 2002 /* Init tx buffer */ 2003 self->tx_buff.data = self->tx_buff.head; 2004 2005 /* Copy skb to tx_buff while wrapping, stuffing and making CRC */ 2006 self->tx_buff.len = async_wrap_skb(skb, self->tx_buff.data, 2007 self->tx_buff.truesize); 2008 2009 self->netdev->stats.tx_bytes += self->tx_buff.len; 2010 2011 /* Turn on transmit finished interrupt. Will fire immediately! */ 2012 outb(UART_IER_THRI, iobase+UART_IER); 2013 2014 dev->trans_start = jiffies; 2015 spin_unlock_irqrestore(&self->lock, flags); 2016 2017 dev_kfree_skb(skb); 2018 2019 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ ); 2020 2021 return NETDEV_TX_OK; 2022} 2023 2024 2025/* 2026 * Function ali_ircc_net_ioctl (dev, rq, cmd) 2027 * 2028 * Process IOCTL commands for this device 2029 * 2030 */ 2031static int ali_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 2032{ 2033 struct if_irda_req *irq = (struct if_irda_req *) rq; 2034 struct ali_ircc_cb *self; 2035 unsigned long flags; 2036 int ret = 0; 2037 2038 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ ); 2039 2040 IRDA_ASSERT(dev != NULL, return -1;); 2041 2042 self = netdev_priv(dev); 2043 2044 IRDA_ASSERT(self != NULL, return -1;); 2045 2046 IRDA_DEBUG(2, "%s(), %s, (cmd=0x%X)\n", __func__ , dev->name, cmd); 2047 2048 switch (cmd) { 2049 case SIOCSBANDWIDTH: /* Set bandwidth */ 2050 IRDA_DEBUG(1, "%s(), SIOCSBANDWIDTH\n", __func__ ); 2051 /* 2052 * This function will also be used by IrLAP to change the 2053 * speed, so we still must allow for speed change within 2054 * interrupt context. 2055 */ 2056 if (!in_interrupt() && !capable(CAP_NET_ADMIN)) 2057 return -EPERM; 2058 2059 spin_lock_irqsave(&self->lock, flags); 2060 ali_ircc_change_speed(self, irq->ifr_baudrate); 2061 spin_unlock_irqrestore(&self->lock, flags); 2062 break; 2063 case SIOCSMEDIABUSY: /* Set media busy */ 2064 IRDA_DEBUG(1, "%s(), SIOCSMEDIABUSY\n", __func__ ); 2065 if (!capable(CAP_NET_ADMIN)) 2066 return -EPERM; 2067 irda_device_set_media_busy(self->netdev, TRUE); 2068 break; 2069 case SIOCGRECEIVING: /* Check if we are receiving right now */ 2070 IRDA_DEBUG(2, "%s(), SIOCGRECEIVING\n", __func__ ); 2071 /* This is protected */ 2072 irq->ifr_receiving = ali_ircc_is_receiving(self); 2073 break; 2074 default: 2075 ret = -EOPNOTSUPP; 2076 } 2077 2078 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ ); 2079 2080 return ret; 2081} 2082 2083/* 2084 * Function ali_ircc_is_receiving (self) 2085 * 2086 * Return TRUE is we are currently receiving a frame 2087 * 2088 */ 2089static int ali_ircc_is_receiving(struct ali_ircc_cb *self) 2090{ 2091 unsigned long flags; 2092 int status = FALSE; 2093 int iobase; 2094 2095 IRDA_DEBUG(2, "%s(), ---------------- Start -----------------\n", __func__ ); 2096 2097 IRDA_ASSERT(self != NULL, return FALSE;); 2098 2099 spin_lock_irqsave(&self->lock, flags); 2100 2101 if (self->io.speed > 115200) 2102 { 2103 iobase = self->io.fir_base; 2104 2105 switch_bank(iobase, BANK1); 2106 if((inb(iobase+FIR_FIFO_FR) & 0x3f) != 0) 2107 { 2108 /* We are receiving something */ 2109 IRDA_DEBUG(1, "%s(), We are receiving something\n", __func__ ); 2110 status = TRUE; 2111 } 2112 switch_bank(iobase, BANK0); 2113 } 2114 else 2115 { 2116 status = (self->rx_buff.state != OUTSIDE_FRAME); 2117 } 2118 2119 spin_unlock_irqrestore(&self->lock, flags); 2120 2121 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ ); 2122 2123 return status; 2124} 2125 2126static int ali_ircc_suspend(struct platform_device *dev, pm_message_t state) 2127{ 2128 struct ali_ircc_cb *self = platform_get_drvdata(dev); 2129 2130 IRDA_MESSAGE("%s, Suspending\n", ALI_IRCC_DRIVER_NAME); 2131 2132 if (self->io.suspended) 2133 return 0; 2134 2135 ali_ircc_net_close(self->netdev); 2136 2137 self->io.suspended = 1; 2138 2139 return 0; 2140} 2141 2142static int ali_ircc_resume(struct platform_device *dev) 2143{ 2144 struct ali_ircc_cb *self = platform_get_drvdata(dev); 2145 2146 if (!self->io.suspended) 2147 return 0; 2148 2149 ali_ircc_net_open(self->netdev); 2150 2151 IRDA_MESSAGE("%s, Waking up\n", ALI_IRCC_DRIVER_NAME); 2152 2153 self->io.suspended = 0; 2154 2155 return 0; 2156} 2157 2158/* ALi Chip Function */ 2159 2160static void SetCOMInterrupts(struct ali_ircc_cb *self , unsigned char enable) 2161{ 2162 2163 unsigned char newMask; 2164 2165 int iobase = self->io.fir_base; /* or sir_base */ 2166 2167 IRDA_DEBUG(2, "%s(), -------- Start -------- ( Enable = %d )\n", __func__ , enable); 2168 2169 /* Enable the interrupt which we wish to */ 2170 if (enable){ 2171 if (self->io.direction == IO_XMIT) 2172 { 2173 if (self->io.speed > 115200) /* FIR, MIR */ 2174 { 2175 newMask = self->ier; 2176 } 2177 else /* SIR */ 2178 { 2179 newMask = UART_IER_THRI | UART_IER_RDI; 2180 } 2181 } 2182 else { 2183 if (self->io.speed > 115200) /* FIR, MIR */ 2184 { 2185 newMask = self->ier; 2186 } 2187 else /* SIR */ 2188 { 2189 newMask = UART_IER_RDI; 2190 } 2191 } 2192 } 2193 else /* Disable all the interrupts */ 2194 { 2195 newMask = 0x00; 2196 2197 } 2198 2199 //SIR and FIR has different registers 2200 if (self->io.speed > 115200) 2201 { 2202 switch_bank(iobase, BANK0); 2203 outb(newMask, iobase+FIR_IER); 2204 } 2205 else 2206 outb(newMask, iobase+UART_IER); 2207 2208 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ ); 2209} 2210 2211static void SIR2FIR(int iobase) 2212{ 2213 //unsigned char tmp; 2214 2215 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ ); 2216 2217 /* Already protected (change_speed() or setup()), no need to lock. 2218 * Jean II */ 2219 2220 outb(0x28, iobase+UART_MCR); 2221 outb(0x68, iobase+UART_MCR); 2222 outb(0x88, iobase+UART_MCR); 2223 2224 outb(0x60, iobase+FIR_MCR); /* Master Reset */ 2225 outb(0x20, iobase+FIR_MCR); /* Master Interrupt Enable */ 2226 2227 //tmp = inb(iobase+FIR_LCR_B); /* SIP enable */ 2228 //tmp |= 0x20; 2229 //outb(tmp, iobase+FIR_LCR_B); 2230 2231 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ ); 2232} 2233 2234static void FIR2SIR(int iobase) 2235{ 2236 unsigned char val; 2237 2238 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ ); 2239 2240 /* Already protected (change_speed() or setup()), no need to lock. 2241 * Jean II */ 2242 2243 outb(0x20, iobase+FIR_MCR); /* IRQ to low */ 2244 outb(0x00, iobase+UART_IER); 2245 2246 outb(0xA0, iobase+FIR_MCR); /* Don't set master reset */ 2247 outb(0x00, iobase+UART_FCR); 2248 outb(0x07, iobase+UART_FCR); 2249 2250 val = inb(iobase+UART_RX); 2251 val = inb(iobase+UART_LSR); 2252 val = inb(iobase+UART_MSR); 2253 2254 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ ); 2255} 2256 2257MODULE_AUTHOR("Benjamin Kong <benjamin_kong@ali.com.tw>"); 2258MODULE_DESCRIPTION("ALi FIR Controller Driver"); 2259MODULE_LICENSE("GPL"); 2260MODULE_ALIAS("platform:" ALI_IRCC_DRIVER_NAME); 2261 2262 2263module_param_array(io, int, NULL, 0); 2264MODULE_PARM_DESC(io, "Base I/O addresses"); 2265module_param_array(irq, int, NULL, 0); 2266MODULE_PARM_DESC(irq, "IRQ lines"); 2267module_param_array(dma, int, NULL, 0); 2268MODULE_PARM_DESC(dma, "DMA channels"); 2269 2270module_init(ali_ircc_init); 2271module_exit(ali_ircc_cleanup); 2272