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kernel / drivers / net / irda / ali-ircc.c
at v2.6.17-rc4 2278 lines 59 kB view raw
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 38#include <asm/io.h> 39#include <asm/dma.h> 40#include <asm/byteorder.h> 41 42#include <linux/pm.h> 43#include <linux/pm_legacy.h> 44 45#include <net/irda/wrapper.h> 46#include <net/irda/irda.h> 47#include <net/irda/irda_device.h> 48 49#include "ali-ircc.h" 50 51#define CHIP_IO_EXTENT 8 52#define BROKEN_DONGLE_ID 53 54static char *driver_name = "ali-ircc"; 55 56/* Module parameters */ 57static int qos_mtt_bits = 0x07; /* 1 ms or more */ 58 59/* Use BIOS settions by default, but user may supply module parameters */ 60static unsigned int io[] = { ~0, ~0, ~0, ~0 }; 61static unsigned int irq[] = { 0, 0, 0, 0 }; 62static unsigned int dma[] = { 0, 0, 0, 0 }; 63 64static int ali_ircc_probe_53(ali_chip_t *chip, chipio_t *info); 65static int ali_ircc_init_43(ali_chip_t *chip, chipio_t *info); 66static int ali_ircc_init_53(ali_chip_t *chip, chipio_t *info); 67 68/* These are the currently known ALi sourth-bridge chipsets, the only one difference 69 * is that M1543C doesn't support HP HDSL-3600 70 */ 71static ali_chip_t chips[] = 72{ 73 { "M1543", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x43, ali_ircc_probe_53, ali_ircc_init_43 }, 74 { "M1535", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x53, ali_ircc_probe_53, ali_ircc_init_53 }, 75 { "M1563", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x63, ali_ircc_probe_53, ali_ircc_init_53 }, 76 { NULL } 77}; 78 79/* Max 4 instances for now */ 80static struct ali_ircc_cb *dev_self[] = { NULL, NULL, NULL, NULL }; 81 82/* Dongle Types */ 83static char *dongle_types[] = { 84 "TFDS6000", 85 "HP HSDL-3600", 86 "HP HSDL-1100", 87 "No dongle connected", 88}; 89 90/* Some prototypes */ 91static int ali_ircc_open(int i, chipio_t *info); 92 93static int ali_ircc_close(struct ali_ircc_cb *self); 94 95static int ali_ircc_setup(chipio_t *info); 96static int ali_ircc_is_receiving(struct ali_ircc_cb *self); 97static int ali_ircc_net_open(struct net_device *dev); 98static int ali_ircc_net_close(struct net_device *dev); 99static int ali_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); 100static int ali_ircc_pmproc(struct pm_dev *dev, pm_request_t rqst, void *data); 101static void ali_ircc_change_speed(struct ali_ircc_cb *self, __u32 baud); 102static void ali_ircc_suspend(struct ali_ircc_cb *self); 103static void ali_ircc_wakeup(struct ali_ircc_cb *self); 104static struct net_device_stats *ali_ircc_net_get_stats(struct net_device *dev); 105 106/* SIR function */ 107static int ali_ircc_sir_hard_xmit(struct sk_buff *skb, struct net_device *dev); 108static irqreturn_t ali_ircc_sir_interrupt(struct ali_ircc_cb *self); 109static void ali_ircc_sir_receive(struct ali_ircc_cb *self); 110static void ali_ircc_sir_write_wakeup(struct ali_ircc_cb *self); 111static int ali_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len); 112static void ali_ircc_sir_change_speed(struct ali_ircc_cb *priv, __u32 speed); 113 114/* FIR function */ 115static int ali_ircc_fir_hard_xmit(struct sk_buff *skb, struct net_device *dev); 116static void ali_ircc_fir_change_speed(struct ali_ircc_cb *priv, __u32 speed); 117static irqreturn_t ali_ircc_fir_interrupt(struct ali_ircc_cb *self); 118static int ali_ircc_dma_receive(struct ali_ircc_cb *self); 119static int ali_ircc_dma_receive_complete(struct ali_ircc_cb *self); 120static int ali_ircc_dma_xmit_complete(struct ali_ircc_cb *self); 121static void ali_ircc_dma_xmit(struct ali_ircc_cb *self); 122 123/* My Function */ 124static int ali_ircc_read_dongle_id (int i, chipio_t *info); 125static void ali_ircc_change_dongle_speed(struct ali_ircc_cb *priv, int speed); 126 127/* ALi chip function */ 128static void SIR2FIR(int iobase); 129static void FIR2SIR(int iobase); 130static void SetCOMInterrupts(struct ali_ircc_cb *self , unsigned char enable); 131 132/* 133 * Function ali_ircc_init () 134 * 135 * Initialize chip. Find out whay kinds of chips we are dealing with 136 * and their configuation registers address 137 */ 138static int __init ali_ircc_init(void) 139{ 140 ali_chip_t *chip; 141 chipio_t info; 142 int ret = -ENODEV; 143 int cfg, cfg_base; 144 int reg, revision; 145 int i = 0; 146 147 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__); 148 149 /* Probe for all the ALi chipsets we know about */ 150 for (chip= chips; chip->name; chip++, i++) 151 { 152 IRDA_DEBUG(2, "%s(), Probing for %s ...\n", __FUNCTION__, chip->name); 153 154 /* Try all config registers for this chip */ 155 for (cfg=0; cfg<2; cfg++) 156 { 157 cfg_base = chip->cfg[cfg]; 158 if (!cfg_base) 159 continue; 160 161 memset(&info, 0, sizeof(chipio_t)); 162 info.cfg_base = cfg_base; 163 info.fir_base = io[i]; 164 info.dma = dma[i]; 165 info.irq = irq[i]; 166 167 168 /* Enter Configuration */ 169 outb(chip->entr1, cfg_base); 170 outb(chip->entr2, cfg_base); 171 172 /* Select Logical Device 5 Registers (UART2) */ 173 outb(0x07, cfg_base); 174 outb(0x05, cfg_base+1); 175 176 /* Read Chip Identification Register */ 177 outb(chip->cid_index, cfg_base); 178 reg = inb(cfg_base+1); 179 180 if (reg == chip->cid_value) 181 { 182 IRDA_DEBUG(2, "%s(), Chip found at 0x%03x\n", __FUNCTION__, cfg_base); 183 184 outb(0x1F, cfg_base); 185 revision = inb(cfg_base+1); 186 IRDA_DEBUG(2, "%s(), Found %s chip, revision=%d\n", __FUNCTION__, 187 chip->name, revision); 188 189 /* 190 * If the user supplies the base address, then 191 * we init the chip, if not we probe the values 192 * set by the BIOS 193 */ 194 if (io[i] < 2000) 195 { 196 chip->init(chip, &info); 197 } 198 else 199 { 200 chip->probe(chip, &info); 201 } 202 203 if (ali_ircc_open(i, &info) == 0) 204 ret = 0; 205 i++; 206 } 207 else 208 { 209 IRDA_DEBUG(2, "%s(), No %s chip at 0x%03x\n", __FUNCTION__, chip->name, cfg_base); 210 } 211 /* Exit configuration */ 212 outb(0xbb, cfg_base); 213 } 214 } 215 216 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __FUNCTION__); 217 return ret; 218} 219 220/* 221 * Function ali_ircc_cleanup () 222 * 223 * Close all configured chips 224 * 225 */ 226static void __exit ali_ircc_cleanup(void) 227{ 228 int i; 229 230 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__); 231 232 pm_unregister_all(ali_ircc_pmproc); 233 234 for (i=0; i < 4; i++) { 235 if (dev_self[i]) 236 ali_ircc_close(dev_self[i]); 237 } 238 239 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __FUNCTION__); 240} 241 242/* 243 * Function ali_ircc_open (int i, chipio_t *inf) 244 * 245 * Open driver instance 246 * 247 */ 248static int ali_ircc_open(int i, chipio_t *info) 249{ 250 struct net_device *dev; 251 struct ali_ircc_cb *self; 252 struct pm_dev *pmdev; 253 int dongle_id; 254 int err; 255 256 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__); 257 258 /* Set FIR FIFO and DMA Threshold */ 259 if ((ali_ircc_setup(info)) == -1) 260 return -1; 261 262 dev = alloc_irdadev(sizeof(*self)); 263 if (dev == NULL) { 264 IRDA_ERROR("%s(), can't allocate memory for control block!\n", 265 __FUNCTION__); 266 return -ENOMEM; 267 } 268 269 self = dev->priv; 270 self->netdev = dev; 271 spin_lock_init(&self->lock); 272 273 /* Need to store self somewhere */ 274 dev_self[i] = self; 275 self->index = i; 276 277 /* Initialize IO */ 278 self->io.cfg_base = info->cfg_base; /* In ali_ircc_probe_53 assign */ 279 self->io.fir_base = info->fir_base; /* info->sir_base = info->fir_base */ 280 self->io.sir_base = info->sir_base; /* ALi SIR and FIR use the same address */ 281 self->io.irq = info->irq; 282 self->io.fir_ext = CHIP_IO_EXTENT; 283 self->io.dma = info->dma; 284 self->io.fifo_size = 16; /* SIR: 16, FIR: 32 Benjamin 2000/11/1 */ 285 286 /* Reserve the ioports that we need */ 287 if (!request_region(self->io.fir_base, self->io.fir_ext, driver_name)) { 288 IRDA_WARNING("%s(), can't get iobase of 0x%03x\n", __FUNCTION__, 289 self->io.fir_base); 290 err = -ENODEV; 291 goto err_out1; 292 } 293 294 /* Initialize QoS for this device */ 295 irda_init_max_qos_capabilies(&self->qos); 296 297 /* The only value we must override it the baudrate */ 298 self->qos.baud_rate.bits = IR_9600|IR_19200|IR_38400|IR_57600| 299 IR_115200|IR_576000|IR_1152000|(IR_4000000 << 8); // benjamin 2000/11/8 05:27PM 300 301 self->qos.min_turn_time.bits = qos_mtt_bits; 302 303 irda_qos_bits_to_value(&self->qos); 304 305 /* Max DMA buffer size needed = (data_size + 6) * (window_size) + 6; */ 306 self->rx_buff.truesize = 14384; 307 self->tx_buff.truesize = 14384; 308 309 /* Allocate memory if needed */ 310 self->rx_buff.head = 311 dma_alloc_coherent(NULL, self->rx_buff.truesize, 312 &self->rx_buff_dma, GFP_KERNEL); 313 if (self->rx_buff.head == NULL) { 314 err = -ENOMEM; 315 goto err_out2; 316 } 317 memset(self->rx_buff.head, 0, self->rx_buff.truesize); 318 319 self->tx_buff.head = 320 dma_alloc_coherent(NULL, self->tx_buff.truesize, 321 &self->tx_buff_dma, GFP_KERNEL); 322 if (self->tx_buff.head == NULL) { 323 err = -ENOMEM; 324 goto err_out3; 325 } 326 memset(self->tx_buff.head, 0, self->tx_buff.truesize); 327 328 self->rx_buff.in_frame = FALSE; 329 self->rx_buff.state = OUTSIDE_FRAME; 330 self->tx_buff.data = self->tx_buff.head; 331 self->rx_buff.data = self->rx_buff.head; 332 333 /* Reset Tx queue info */ 334 self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0; 335 self->tx_fifo.tail = self->tx_buff.head; 336 337 338 /* Keep track of module usage */ 339 SET_MODULE_OWNER(dev); 340 341 /* Override the network functions we need to use */ 342 dev->hard_start_xmit = ali_ircc_sir_hard_xmit; 343 dev->open = ali_ircc_net_open; 344 dev->stop = ali_ircc_net_close; 345 dev->do_ioctl = ali_ircc_net_ioctl; 346 dev->get_stats = ali_ircc_net_get_stats; 347 348 err = register_netdev(dev); 349 if (err) { 350 IRDA_ERROR("%s(), register_netdev() failed!\n", __FUNCTION__); 351 goto err_out4; 352 } 353 IRDA_MESSAGE("IrDA: Registered device %s\n", dev->name); 354 355 /* Check dongle id */ 356 dongle_id = ali_ircc_read_dongle_id(i, info); 357 IRDA_MESSAGE("%s(), %s, Found dongle: %s\n", __FUNCTION__, driver_name, dongle_types[dongle_id]); 358 359 self->io.dongle_id = dongle_id; 360 361 pmdev = pm_register(PM_SYS_DEV, PM_SYS_IRDA, ali_ircc_pmproc); 362 if (pmdev) 363 pmdev->data = self; 364 365 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __FUNCTION__); 366 367 return 0; 368 369 err_out4: 370 dma_free_coherent(NULL, self->tx_buff.truesize, 371 self->tx_buff.head, self->tx_buff_dma); 372 err_out3: 373 dma_free_coherent(NULL, self->rx_buff.truesize, 374 self->rx_buff.head, self->rx_buff_dma); 375 err_out2: 376 release_region(self->io.fir_base, self->io.fir_ext); 377 err_out1: 378 dev_self[i] = NULL; 379 free_netdev(dev); 380 return err; 381} 382 383 384/* 385 * Function ali_ircc_close (self) 386 * 387 * Close driver instance 388 * 389 */ 390static int __exit ali_ircc_close(struct ali_ircc_cb *self) 391{ 392 int iobase; 393 394 IRDA_DEBUG(4, "%s(), ---------------- Start ----------------\n", __FUNCTION__); 395 396 IRDA_ASSERT(self != NULL, return -1;); 397 398 iobase = self->io.fir_base; 399 400 /* Remove netdevice */ 401 unregister_netdev(self->netdev); 402 403 /* Release the PORT that this driver is using */ 404 IRDA_DEBUG(4, "%s(), Releasing Region %03x\n", __FUNCTION__, self->io.fir_base); 405 release_region(self->io.fir_base, self->io.fir_ext); 406 407 if (self->tx_buff.head) 408 dma_free_coherent(NULL, self->tx_buff.truesize, 409 self->tx_buff.head, self->tx_buff_dma); 410 411 if (self->rx_buff.head) 412 dma_free_coherent(NULL, self->rx_buff.truesize, 413 self->rx_buff.head, self->rx_buff_dma); 414 415 dev_self[self->index] = NULL; 416 free_netdev(self->netdev); 417 418 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __FUNCTION__); 419 420 return 0; 421} 422 423/* 424 * Function ali_ircc_init_43 (chip, info) 425 * 426 * Initialize the ALi M1543 chip. 427 */ 428static int ali_ircc_init_43(ali_chip_t *chip, chipio_t *info) 429{ 430 /* All controller information like I/O address, DMA channel, IRQ 431 * are set by BIOS 432 */ 433 434 return 0; 435} 436 437/* 438 * Function ali_ircc_init_53 (chip, info) 439 * 440 * Initialize the ALi M1535 chip. 441 */ 442static int ali_ircc_init_53(ali_chip_t *chip, chipio_t *info) 443{ 444 /* All controller information like I/O address, DMA channel, IRQ 445 * are set by BIOS 446 */ 447 448 return 0; 449} 450 451/* 452 * Function ali_ircc_probe_53 (chip, info) 453 * 454 * Probes for the ALi M1535D or M1535 455 */ 456static int ali_ircc_probe_53(ali_chip_t *chip, chipio_t *info) 457{ 458 int cfg_base = info->cfg_base; 459 int hi, low, reg; 460 461 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__); 462 463 /* Enter Configuration */ 464 outb(chip->entr1, cfg_base); 465 outb(chip->entr2, cfg_base); 466 467 /* Select Logical Device 5 Registers (UART2) */ 468 outb(0x07, cfg_base); 469 outb(0x05, cfg_base+1); 470 471 /* Read address control register */ 472 outb(0x60, cfg_base); 473 hi = inb(cfg_base+1); 474 outb(0x61, cfg_base); 475 low = inb(cfg_base+1); 476 info->fir_base = (hi<<8) + low; 477 478 info->sir_base = info->fir_base; 479 480 IRDA_DEBUG(2, "%s(), probing fir_base=0x%03x\n", __FUNCTION__, info->fir_base); 481 482 /* Read IRQ control register */ 483 outb(0x70, cfg_base); 484 reg = inb(cfg_base+1); 485 info->irq = reg & 0x0f; 486 IRDA_DEBUG(2, "%s(), probing irq=%d\n", __FUNCTION__, info->irq); 487 488 /* Read DMA channel */ 489 outb(0x74, cfg_base); 490 reg = inb(cfg_base+1); 491 info->dma = reg & 0x07; 492 493 if(info->dma == 0x04) 494 IRDA_WARNING("%s(), No DMA channel assigned !\n", __FUNCTION__); 495 else 496 IRDA_DEBUG(2, "%s(), probing dma=%d\n", __FUNCTION__, info->dma); 497 498 /* Read Enabled Status */ 499 outb(0x30, cfg_base); 500 reg = inb(cfg_base+1); 501 info->enabled = (reg & 0x80) && (reg & 0x01); 502 IRDA_DEBUG(2, "%s(), probing enabled=%d\n", __FUNCTION__, info->enabled); 503 504 /* Read Power Status */ 505 outb(0x22, cfg_base); 506 reg = inb(cfg_base+1); 507 info->suspended = (reg & 0x20); 508 IRDA_DEBUG(2, "%s(), probing suspended=%d\n", __FUNCTION__, info->suspended); 509 510 /* Exit configuration */ 511 outb(0xbb, cfg_base); 512 513 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __FUNCTION__); 514 515 return 0; 516} 517 518/* 519 * Function ali_ircc_setup (info) 520 * 521 * Set FIR FIFO and DMA Threshold 522 * Returns non-negative on success. 523 * 524 */ 525static int ali_ircc_setup(chipio_t *info) 526{ 527 unsigned char tmp; 528 int version; 529 int iobase = info->fir_base; 530 531 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__); 532 533 /* Locking comments : 534 * Most operations here need to be protected. We are called before 535 * the device instance is created in ali_ircc_open(), therefore 536 * nobody can bother us - Jean II */ 537 538 /* Switch to FIR space */ 539 SIR2FIR(iobase); 540 541 /* Master Reset */ 542 outb(0x40, iobase+FIR_MCR); // benjamin 2000/11/30 11:45AM 543 544 /* Read FIR ID Version Register */ 545 switch_bank(iobase, BANK3); 546 version = inb(iobase+FIR_ID_VR); 547 548 /* Should be 0x00 in the M1535/M1535D */ 549 if(version != 0x00) 550 { 551 IRDA_ERROR("%s, Wrong chip version %02x\n", driver_name, version); 552 return -1; 553 } 554 555 // IRDA_MESSAGE("%s, Found chip at base=0x%03x\n", driver_name, info->cfg_base); 556 557 /* Set FIR FIFO Threshold Register */ 558 switch_bank(iobase, BANK1); 559 outb(RX_FIFO_Threshold, iobase+FIR_FIFO_TR); 560 561 /* Set FIR DMA Threshold Register */ 562 outb(RX_DMA_Threshold, iobase+FIR_DMA_TR); 563 564 /* CRC enable */ 565 switch_bank(iobase, BANK2); 566 outb(inb(iobase+FIR_IRDA_CR) | IRDA_CR_CRC, iobase+FIR_IRDA_CR); 567 568 /* NDIS driver set TX Length here BANK2 Alias 3, Alias4*/ 569 570 /* Switch to Bank 0 */ 571 switch_bank(iobase, BANK0); 572 573 tmp = inb(iobase+FIR_LCR_B); 574 tmp &=~0x20; // disable SIP 575 tmp |= 0x80; // these two steps make RX mode 576 tmp &= 0xbf; 577 outb(tmp, iobase+FIR_LCR_B); 578 579 /* Disable Interrupt */ 580 outb(0x00, iobase+FIR_IER); 581 582 583 /* Switch to SIR space */ 584 FIR2SIR(iobase); 585 586 IRDA_MESSAGE("%s, driver loaded (Benjamin Kong)\n", driver_name); 587 588 /* Enable receive interrupts */ 589 // outb(UART_IER_RDI, iobase+UART_IER); //benjamin 2000/11/23 01:25PM 590 // Turn on the interrupts in ali_ircc_net_open 591 592 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__); 593 594 return 0; 595} 596 597/* 598 * Function ali_ircc_read_dongle_id (int index, info) 599 * 600 * Try to read dongle indentification. This procedure needs to be executed 601 * once after power-on/reset. It also needs to be used whenever you suspect 602 * that the user may have plugged/unplugged the IrDA Dongle. 603 */ 604static int ali_ircc_read_dongle_id (int i, chipio_t *info) 605{ 606 int dongle_id, reg; 607 int cfg_base = info->cfg_base; 608 609 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__); 610 611 /* Enter Configuration */ 612 outb(chips[i].entr1, cfg_base); 613 outb(chips[i].entr2, cfg_base); 614 615 /* Select Logical Device 5 Registers (UART2) */ 616 outb(0x07, cfg_base); 617 outb(0x05, cfg_base+1); 618 619 /* Read Dongle ID */ 620 outb(0xf0, cfg_base); 621 reg = inb(cfg_base+1); 622 dongle_id = ((reg>>6)&0x02) | ((reg>>5)&0x01); 623 IRDA_DEBUG(2, "%s(), probing dongle_id=%d, dongle_types=%s\n", __FUNCTION__, 624 dongle_id, dongle_types[dongle_id]); 625 626 /* Exit configuration */ 627 outb(0xbb, cfg_base); 628 629 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__); 630 631 return dongle_id; 632} 633 634/* 635 * Function ali_ircc_interrupt (irq, dev_id, regs) 636 * 637 * An interrupt from the chip has arrived. Time to do some work 638 * 639 */ 640static irqreturn_t ali_ircc_interrupt(int irq, void *dev_id, 641 struct pt_regs *regs) 642{ 643 struct net_device *dev = (struct net_device *) dev_id; 644 struct ali_ircc_cb *self; 645 int ret; 646 647 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__); 648 649 if (!dev) { 650 IRDA_WARNING("%s: irq %d for unknown device.\n", driver_name, irq); 651 return IRQ_NONE; 652 } 653 654 self = (struct ali_ircc_cb *) dev->priv; 655 656 spin_lock(&self->lock); 657 658 /* Dispatch interrupt handler for the current speed */ 659 if (self->io.speed > 115200) 660 ret = ali_ircc_fir_interrupt(self); 661 else 662 ret = ali_ircc_sir_interrupt(self); 663 664 spin_unlock(&self->lock); 665 666 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__); 667 return ret; 668} 669/* 670 * Function ali_ircc_fir_interrupt(irq, struct ali_ircc_cb *self) 671 * 672 * Handle MIR/FIR interrupt 673 * 674 */ 675static irqreturn_t ali_ircc_fir_interrupt(struct ali_ircc_cb *self) 676{ 677 __u8 eir, OldMessageCount; 678 int iobase, tmp; 679 680 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __FUNCTION__); 681 682 iobase = self->io.fir_base; 683 684 switch_bank(iobase, BANK0); 685 self->InterruptID = inb(iobase+FIR_IIR); 686 self->BusStatus = inb(iobase+FIR_BSR); 687 688 OldMessageCount = (self->LineStatus + 1) & 0x07; 689 self->LineStatus = inb(iobase+FIR_LSR); 690 //self->ier = inb(iobase+FIR_IER); 2000/12/1 04:32PM 691 eir = self->InterruptID & self->ier; /* Mask out the interesting ones */ 692 693 IRDA_DEBUG(1, "%s(), self->InterruptID = %x\n", __FUNCTION__,self->InterruptID); 694 IRDA_DEBUG(1, "%s(), self->LineStatus = %x\n", __FUNCTION__,self->LineStatus); 695 IRDA_DEBUG(1, "%s(), self->ier = %x\n", __FUNCTION__,self->ier); 696 IRDA_DEBUG(1, "%s(), eir = %x\n", __FUNCTION__,eir); 697 698 /* Disable interrupts */ 699 SetCOMInterrupts(self, FALSE); 700 701 /* Tx or Rx Interrupt */ 702 703 if (eir & IIR_EOM) 704 { 705 if (self->io.direction == IO_XMIT) /* TX */ 706 { 707 IRDA_DEBUG(1, "%s(), ******* IIR_EOM (Tx) *******\n", __FUNCTION__); 708 709 if(ali_ircc_dma_xmit_complete(self)) 710 { 711 if (irda_device_txqueue_empty(self->netdev)) 712 { 713 /* Prepare for receive */ 714 ali_ircc_dma_receive(self); 715 self->ier = IER_EOM; 716 } 717 } 718 else 719 { 720 self->ier = IER_EOM; 721 } 722 723 } 724 else /* RX */ 725 { 726 IRDA_DEBUG(1, "%s(), ******* IIR_EOM (Rx) *******\n", __FUNCTION__); 727 728 if(OldMessageCount > ((self->LineStatus+1) & 0x07)) 729 { 730 self->rcvFramesOverflow = TRUE; 731 IRDA_DEBUG(1, "%s(), ******* self->rcvFramesOverflow = TRUE ******** \n", __FUNCTION__); 732 } 733 734 if (ali_ircc_dma_receive_complete(self)) 735 { 736 IRDA_DEBUG(1, "%s(), ******* receive complete ******** \n", __FUNCTION__); 737 738 self->ier = IER_EOM; 739 } 740 else 741 { 742 IRDA_DEBUG(1, "%s(), ******* Not receive complete ******** \n", __FUNCTION__); 743 744 self->ier = IER_EOM | IER_TIMER; 745 } 746 747 } 748 } 749 /* Timer Interrupt */ 750 else if (eir & IIR_TIMER) 751 { 752 if(OldMessageCount > ((self->LineStatus+1) & 0x07)) 753 { 754 self->rcvFramesOverflow = TRUE; 755 IRDA_DEBUG(1, "%s(), ******* self->rcvFramesOverflow = TRUE ******* \n", __FUNCTION__); 756 } 757 /* Disable Timer */ 758 switch_bank(iobase, BANK1); 759 tmp = inb(iobase+FIR_CR); 760 outb( tmp& ~CR_TIMER_EN, iobase+FIR_CR); 761 762 /* Check if this is a Tx timer interrupt */ 763 if (self->io.direction == IO_XMIT) 764 { 765 ali_ircc_dma_xmit(self); 766 767 /* Interrupt on EOM */ 768 self->ier = IER_EOM; 769 770 } 771 else /* Rx */ 772 { 773 if(ali_ircc_dma_receive_complete(self)) 774 { 775 self->ier = IER_EOM; 776 } 777 else 778 { 779 self->ier = IER_EOM | IER_TIMER; 780 } 781 } 782 } 783 784 /* Restore Interrupt */ 785 SetCOMInterrupts(self, TRUE); 786 787 IRDA_DEBUG(1, "%s(), ----------------- End ---------------\n", __FUNCTION__); 788 return IRQ_RETVAL(eir); 789} 790 791/* 792 * Function ali_ircc_sir_interrupt (irq, self, eir) 793 * 794 * Handle SIR interrupt 795 * 796 */ 797static irqreturn_t ali_ircc_sir_interrupt(struct ali_ircc_cb *self) 798{ 799 int iobase; 800 int iir, lsr; 801 802 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__); 803 804 iobase = self->io.sir_base; 805 806 iir = inb(iobase+UART_IIR) & UART_IIR_ID; 807 if (iir) { 808 /* Clear interrupt */ 809 lsr = inb(iobase+UART_LSR); 810 811 IRDA_DEBUG(4, "%s(), iir=%02x, lsr=%02x, iobase=%#x\n", __FUNCTION__, 812 iir, lsr, iobase); 813 814 switch (iir) 815 { 816 case UART_IIR_RLSI: 817 IRDA_DEBUG(2, "%s(), RLSI\n", __FUNCTION__); 818 break; 819 case UART_IIR_RDI: 820 /* Receive interrupt */ 821 ali_ircc_sir_receive(self); 822 break; 823 case UART_IIR_THRI: 824 if (lsr & UART_LSR_THRE) 825 { 826 /* Transmitter ready for data */ 827 ali_ircc_sir_write_wakeup(self); 828 } 829 break; 830 default: 831 IRDA_DEBUG(0, "%s(), unhandled IIR=%#x\n", __FUNCTION__, iir); 832 break; 833 } 834 835 } 836 837 838 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__); 839 840 return IRQ_RETVAL(iir); 841} 842 843 844/* 845 * Function ali_ircc_sir_receive (self) 846 * 847 * Receive one frame from the infrared port 848 * 849 */ 850static void ali_ircc_sir_receive(struct ali_ircc_cb *self) 851{ 852 int boguscount = 0; 853 int iobase; 854 855 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__); 856 IRDA_ASSERT(self != NULL, return;); 857 858 iobase = self->io.sir_base; 859 860 /* 861 * Receive all characters in Rx FIFO, unwrap and unstuff them. 862 * async_unwrap_char will deliver all found frames 863 */ 864 do { 865 async_unwrap_char(self->netdev, &self->stats, &self->rx_buff, 866 inb(iobase+UART_RX)); 867 868 /* Make sure we don't stay here too long */ 869 if (boguscount++ > 32) { 870 IRDA_DEBUG(2,"%s(), breaking!\n", __FUNCTION__); 871 break; 872 } 873 } while (inb(iobase+UART_LSR) & UART_LSR_DR); 874 875 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); 876} 877 878/* 879 * Function ali_ircc_sir_write_wakeup (tty) 880 * 881 * Called by the driver when there's room for more data. If we have 882 * more packets to send, we send them here. 883 * 884 */ 885static void ali_ircc_sir_write_wakeup(struct ali_ircc_cb *self) 886{ 887 int actual = 0; 888 int iobase; 889 890 IRDA_ASSERT(self != NULL, return;); 891 892 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__ ); 893 894 iobase = self->io.sir_base; 895 896 /* Finished with frame? */ 897 if (self->tx_buff.len > 0) 898 { 899 /* Write data left in transmit buffer */ 900 actual = ali_ircc_sir_write(iobase, self->io.fifo_size, 901 self->tx_buff.data, self->tx_buff.len); 902 self->tx_buff.data += actual; 903 self->tx_buff.len -= actual; 904 } 905 else 906 { 907 if (self->new_speed) 908 { 909 /* We must wait until all data are gone */ 910 while(!(inb(iobase+UART_LSR) & UART_LSR_TEMT)) 911 IRDA_DEBUG(1, "%s(), UART_LSR_THRE\n", __FUNCTION__ ); 912 913 IRDA_DEBUG(1, "%s(), Changing speed! self->new_speed = %d\n", __FUNCTION__ , self->new_speed); 914 ali_ircc_change_speed(self, self->new_speed); 915 self->new_speed = 0; 916 917 // benjamin 2000/11/10 06:32PM 918 if (self->io.speed > 115200) 919 { 920 IRDA_DEBUG(2, "%s(), ali_ircc_change_speed from UART_LSR_TEMT \n", __FUNCTION__ ); 921 922 self->ier = IER_EOM; 923 // SetCOMInterrupts(self, TRUE); 924 return; 925 } 926 } 927 else 928 { 929 netif_wake_queue(self->netdev); 930 } 931 932 self->stats.tx_packets++; 933 934 /* Turn on receive interrupts */ 935 outb(UART_IER_RDI, iobase+UART_IER); 936 } 937 938 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); 939} 940 941static void ali_ircc_change_speed(struct ali_ircc_cb *self, __u32 baud) 942{ 943 struct net_device *dev = self->netdev; 944 int iobase; 945 946 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __FUNCTION__ ); 947 948 IRDA_DEBUG(2, "%s(), setting speed = %d \n", __FUNCTION__ , baud); 949 950 /* This function *must* be called with irq off and spin-lock. 951 * - Jean II */ 952 953 iobase = self->io.fir_base; 954 955 SetCOMInterrupts(self, FALSE); // 2000/11/24 11:43AM 956 957 /* Go to MIR, FIR Speed */ 958 if (baud > 115200) 959 { 960 961 962 ali_ircc_fir_change_speed(self, baud); 963 964 /* Install FIR xmit handler*/ 965 dev->hard_start_xmit = ali_ircc_fir_hard_xmit; 966 967 /* Enable Interuupt */ 968 self->ier = IER_EOM; // benjamin 2000/11/20 07:24PM 969 970 /* Be ready for incomming frames */ 971 ali_ircc_dma_receive(self); // benajmin 2000/11/8 07:46PM not complete 972 } 973 /* Go to SIR Speed */ 974 else 975 { 976 ali_ircc_sir_change_speed(self, baud); 977 978 /* Install SIR xmit handler*/ 979 dev->hard_start_xmit = ali_ircc_sir_hard_xmit; 980 } 981 982 983 SetCOMInterrupts(self, TRUE); // 2000/11/24 11:43AM 984 985 netif_wake_queue(self->netdev); 986 987 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); 988} 989 990static void ali_ircc_fir_change_speed(struct ali_ircc_cb *priv, __u32 baud) 991{ 992 993 int iobase; 994 struct ali_ircc_cb *self = (struct ali_ircc_cb *) priv; 995 struct net_device *dev; 996 997 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __FUNCTION__ ); 998 999 IRDA_ASSERT(self != NULL, return;); 1000 1001 dev = self->netdev; 1002 iobase = self->io.fir_base; 1003 1004 IRDA_DEBUG(1, "%s(), self->io.speed = %d, change to speed = %d\n", __FUNCTION__ ,self->io.speed,baud); 1005 1006 /* Come from SIR speed */ 1007 if(self->io.speed <=115200) 1008 { 1009 SIR2FIR(iobase); 1010 } 1011 1012 /* Update accounting for new speed */ 1013 self->io.speed = baud; 1014 1015 // Set Dongle Speed mode 1016 ali_ircc_change_dongle_speed(self, baud); 1017 1018 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); 1019} 1020 1021/* 1022 * Function ali_sir_change_speed (self, speed) 1023 * 1024 * Set speed of IrDA port to specified baudrate 1025 * 1026 */ 1027static void ali_ircc_sir_change_speed(struct ali_ircc_cb *priv, __u32 speed) 1028{ 1029 struct ali_ircc_cb *self = (struct ali_ircc_cb *) priv; 1030 unsigned long flags; 1031 int iobase; 1032 int fcr; /* FIFO control reg */ 1033 int lcr; /* Line control reg */ 1034 int divisor; 1035 1036 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __FUNCTION__ ); 1037 1038 IRDA_DEBUG(1, "%s(), Setting speed to: %d\n", __FUNCTION__ , speed); 1039 1040 IRDA_ASSERT(self != NULL, return;); 1041 1042 iobase = self->io.sir_base; 1043 1044 /* Come from MIR or FIR speed */ 1045 if(self->io.speed >115200) 1046 { 1047 // Set Dongle Speed mode first 1048 ali_ircc_change_dongle_speed(self, speed); 1049 1050 FIR2SIR(iobase); 1051 } 1052 1053 // Clear Line and Auxiluary status registers 2000/11/24 11:47AM 1054 1055 inb(iobase+UART_LSR); 1056 inb(iobase+UART_SCR); 1057 1058 /* Update accounting for new speed */ 1059 self->io.speed = speed; 1060 1061 spin_lock_irqsave(&self->lock, flags); 1062 1063 divisor = 115200/speed; 1064 1065 fcr = UART_FCR_ENABLE_FIFO; 1066 1067 /* 1068 * Use trigger level 1 to avoid 3 ms. timeout delay at 9600 bps, and 1069 * almost 1,7 ms at 19200 bps. At speeds above that we can just forget 1070 * about this timeout since it will always be fast enough. 1071 */ 1072 if (self->io.speed < 38400) 1073 fcr |= UART_FCR_TRIGGER_1; 1074 else 1075 fcr |= UART_FCR_TRIGGER_14; 1076 1077 /* IrDA ports use 8N1 */ 1078 lcr = UART_LCR_WLEN8; 1079 1080 outb(UART_LCR_DLAB | lcr, iobase+UART_LCR); /* Set DLAB */ 1081 outb(divisor & 0xff, iobase+UART_DLL); /* Set speed */ 1082 outb(divisor >> 8, iobase+UART_DLM); 1083 outb(lcr, iobase+UART_LCR); /* Set 8N1 */ 1084 outb(fcr, iobase+UART_FCR); /* Enable FIFO's */ 1085 1086 /* without this, the conection will be broken after come back from FIR speed, 1087 but with this, the SIR connection is harder to established */ 1088 outb((UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2), iobase+UART_MCR); 1089 1090 spin_unlock_irqrestore(&self->lock, flags); 1091 1092 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); 1093} 1094 1095static void ali_ircc_change_dongle_speed(struct ali_ircc_cb *priv, int speed) 1096{ 1097 1098 struct ali_ircc_cb *self = (struct ali_ircc_cb *) priv; 1099 int iobase,dongle_id; 1100 int tmp = 0; 1101 1102 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __FUNCTION__ ); 1103 1104 iobase = self->io.fir_base; /* or iobase = self->io.sir_base; */ 1105 dongle_id = self->io.dongle_id; 1106 1107 /* We are already locked, no need to do it again */ 1108 1109 IRDA_DEBUG(1, "%s(), Set Speed for %s , Speed = %d\n", __FUNCTION__ , dongle_types[dongle_id], speed); 1110 1111 switch_bank(iobase, BANK2); 1112 tmp = inb(iobase+FIR_IRDA_CR); 1113 1114 /* IBM type dongle */ 1115 if(dongle_id == 0) 1116 { 1117 if(speed == 4000000) 1118 { 1119 // __ __ 1120 // SD/MODE __| |__ __ 1121 // __ __ 1122 // IRTX __ __| |__ 1123 // T1 T2 T3 T4 T5 1124 1125 tmp &= ~IRDA_CR_HDLC; // HDLC=0 1126 tmp |= IRDA_CR_CRC; // CRC=1 1127 1128 switch_bank(iobase, BANK2); 1129 outb(tmp, iobase+FIR_IRDA_CR); 1130 1131 // T1 -> SD/MODE:0 IRTX:0 1132 tmp &= ~0x09; 1133 tmp |= 0x02; 1134 outb(tmp, iobase+FIR_IRDA_CR); 1135 udelay(2); 1136 1137 // T2 -> SD/MODE:1 IRTX:0 1138 tmp &= ~0x01; 1139 tmp |= 0x0a; 1140 outb(tmp, iobase+FIR_IRDA_CR); 1141 udelay(2); 1142 1143 // T3 -> SD/MODE:1 IRTX:1 1144 tmp |= 0x0b; 1145 outb(tmp, iobase+FIR_IRDA_CR); 1146 udelay(2); 1147 1148 // T4 -> SD/MODE:0 IRTX:1 1149 tmp &= ~0x08; 1150 tmp |= 0x03; 1151 outb(tmp, iobase+FIR_IRDA_CR); 1152 udelay(2); 1153 1154 // T5 -> SD/MODE:0 IRTX:0 1155 tmp &= ~0x09; 1156 tmp |= 0x02; 1157 outb(tmp, iobase+FIR_IRDA_CR); 1158 udelay(2); 1159 1160 // reset -> Normal TX output Signal 1161 outb(tmp & ~0x02, iobase+FIR_IRDA_CR); 1162 } 1163 else /* speed <=1152000 */ 1164 { 1165 // __ 1166 // SD/MODE __| |__ 1167 // 1168 // IRTX ________ 1169 // T1 T2 T3 1170 1171 /* MIR 115200, 57600 */ 1172 if (speed==1152000) 1173 { 1174 tmp |= 0xA0; //HDLC=1, 1.152Mbps=1 1175 } 1176 else 1177 { 1178 tmp &=~0x80; //HDLC 0.576Mbps 1179 tmp |= 0x20; //HDLC=1, 1180 } 1181 1182 tmp |= IRDA_CR_CRC; // CRC=1 1183 1184 switch_bank(iobase, BANK2); 1185 outb(tmp, iobase+FIR_IRDA_CR); 1186 1187 /* MIR 115200, 57600 */ 1188 1189 //switch_bank(iobase, BANK2); 1190 // T1 -> SD/MODE:0 IRTX:0 1191 tmp &= ~0x09; 1192 tmp |= 0x02; 1193 outb(tmp, iobase+FIR_IRDA_CR); 1194 udelay(2); 1195 1196 // T2 -> SD/MODE:1 IRTX:0 1197 tmp &= ~0x01; 1198 tmp |= 0x0a; 1199 outb(tmp, iobase+FIR_IRDA_CR); 1200 1201 // T3 -> SD/MODE:0 IRTX:0 1202 tmp &= ~0x09; 1203 tmp |= 0x02; 1204 outb(tmp, iobase+FIR_IRDA_CR); 1205 udelay(2); 1206 1207 // reset -> Normal TX output Signal 1208 outb(tmp & ~0x02, iobase+FIR_IRDA_CR); 1209 } 1210 } 1211 else if (dongle_id == 1) /* HP HDSL-3600 */ 1212 { 1213 switch(speed) 1214 { 1215 case 4000000: 1216 tmp &= ~IRDA_CR_HDLC; // HDLC=0 1217 break; 1218 1219 case 1152000: 1220 tmp |= 0xA0; // HDLC=1, 1.152Mbps=1 1221 break; 1222 1223 case 576000: 1224 tmp &=~0x80; // HDLC 0.576Mbps 1225 tmp |= 0x20; // HDLC=1, 1226 break; 1227 } 1228 1229 tmp |= IRDA_CR_CRC; // CRC=1 1230 1231 switch_bank(iobase, BANK2); 1232 outb(tmp, iobase+FIR_IRDA_CR); 1233 } 1234 else /* HP HDSL-1100 */ 1235 { 1236 if(speed <= 115200) /* SIR */ 1237 { 1238 1239 tmp &= ~IRDA_CR_FIR_SIN; // HP sin select = 0 1240 1241 switch_bank(iobase, BANK2); 1242 outb(tmp, iobase+FIR_IRDA_CR); 1243 } 1244 else /* MIR FIR */ 1245 { 1246 1247 switch(speed) 1248 { 1249 case 4000000: 1250 tmp &= ~IRDA_CR_HDLC; // HDLC=0 1251 break; 1252 1253 case 1152000: 1254 tmp |= 0xA0; // HDLC=1, 1.152Mbps=1 1255 break; 1256 1257 case 576000: 1258 tmp &=~0x80; // HDLC 0.576Mbps 1259 tmp |= 0x20; // HDLC=1, 1260 break; 1261 } 1262 1263 tmp |= IRDA_CR_CRC; // CRC=1 1264 tmp |= IRDA_CR_FIR_SIN; // HP sin select = 1 1265 1266 switch_bank(iobase, BANK2); 1267 outb(tmp, iobase+FIR_IRDA_CR); 1268 } 1269 } 1270 1271 switch_bank(iobase, BANK0); 1272 1273 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); 1274} 1275 1276/* 1277 * Function ali_ircc_sir_write (driver) 1278 * 1279 * Fill Tx FIFO with transmit data 1280 * 1281 */ 1282static int ali_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len) 1283{ 1284 int actual = 0; 1285 1286 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__ ); 1287 1288 /* Tx FIFO should be empty! */ 1289 if (!(inb(iobase+UART_LSR) & UART_LSR_THRE)) { 1290 IRDA_DEBUG(0, "%s(), failed, fifo not empty!\n", __FUNCTION__ ); 1291 return 0; 1292 } 1293 1294 /* Fill FIFO with current frame */ 1295 while ((fifo_size-- > 0) && (actual < len)) { 1296 /* Transmit next byte */ 1297 outb(buf[actual], iobase+UART_TX); 1298 1299 actual++; 1300 } 1301 1302 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); 1303 return actual; 1304} 1305 1306/* 1307 * Function ali_ircc_net_open (dev) 1308 * 1309 * Start the device 1310 * 1311 */ 1312static int ali_ircc_net_open(struct net_device *dev) 1313{ 1314 struct ali_ircc_cb *self; 1315 int iobase; 1316 char hwname[32]; 1317 1318 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__ ); 1319 1320 IRDA_ASSERT(dev != NULL, return -1;); 1321 1322 self = (struct ali_ircc_cb *) dev->priv; 1323 1324 IRDA_ASSERT(self != NULL, return 0;); 1325 1326 iobase = self->io.fir_base; 1327 1328 /* Request IRQ and install Interrupt Handler */ 1329 if (request_irq(self->io.irq, ali_ircc_interrupt, 0, dev->name, dev)) 1330 { 1331 IRDA_WARNING("%s, unable to allocate irq=%d\n", driver_name, 1332 self->io.irq); 1333 return -EAGAIN; 1334 } 1335 1336 /* 1337 * Always allocate the DMA channel after the IRQ, and clean up on 1338 * failure. 1339 */ 1340 if (request_dma(self->io.dma, dev->name)) { 1341 IRDA_WARNING("%s, unable to allocate dma=%d\n", driver_name, 1342 self->io.dma); 1343 free_irq(self->io.irq, self); 1344 return -EAGAIN; 1345 } 1346 1347 /* Turn on interrups */ 1348 outb(UART_IER_RDI , iobase+UART_IER); 1349 1350 /* Ready to play! */ 1351 netif_start_queue(dev); //benjamin by irport 1352 1353 /* Give self a hardware name */ 1354 sprintf(hwname, "ALI-FIR @ 0x%03x", self->io.fir_base); 1355 1356 /* 1357 * Open new IrLAP layer instance, now that everything should be 1358 * initialized properly 1359 */ 1360 self->irlap = irlap_open(dev, &self->qos, hwname); 1361 1362 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); 1363 1364 return 0; 1365} 1366 1367/* 1368 * Function ali_ircc_net_close (dev) 1369 * 1370 * Stop the device 1371 * 1372 */ 1373static int ali_ircc_net_close(struct net_device *dev) 1374{ 1375 1376 struct ali_ircc_cb *self; 1377 //int iobase; 1378 1379 IRDA_DEBUG(4, "%s(), ---------------- Start ----------------\n", __FUNCTION__ ); 1380 1381 IRDA_ASSERT(dev != NULL, return -1;); 1382 1383 self = (struct ali_ircc_cb *) dev->priv; 1384 IRDA_ASSERT(self != NULL, return 0;); 1385 1386 /* Stop device */ 1387 netif_stop_queue(dev); 1388 1389 /* Stop and remove instance of IrLAP */ 1390 if (self->irlap) 1391 irlap_close(self->irlap); 1392 self->irlap = NULL; 1393 1394 disable_dma(self->io.dma); 1395 1396 /* Disable interrupts */ 1397 SetCOMInterrupts(self, FALSE); 1398 1399 free_irq(self->io.irq, dev); 1400 free_dma(self->io.dma); 1401 1402 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); 1403 1404 return 0; 1405} 1406 1407/* 1408 * Function ali_ircc_fir_hard_xmit (skb, dev) 1409 * 1410 * Transmit the frame 1411 * 1412 */ 1413static int ali_ircc_fir_hard_xmit(struct sk_buff *skb, struct net_device *dev) 1414{ 1415 struct ali_ircc_cb *self; 1416 unsigned long flags; 1417 int iobase; 1418 __u32 speed; 1419 int mtt, diff; 1420 1421 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __FUNCTION__ ); 1422 1423 self = (struct ali_ircc_cb *) dev->priv; 1424 iobase = self->io.fir_base; 1425 1426 netif_stop_queue(dev); 1427 1428 /* Make sure tests *& speed change are atomic */ 1429 spin_lock_irqsave(&self->lock, flags); 1430 1431 /* Note : you should make sure that speed changes are not going 1432 * to corrupt any outgoing frame. Look at nsc-ircc for the gory 1433 * details - Jean II */ 1434 1435 /* Check if we need to change the speed */ 1436 speed = irda_get_next_speed(skb); 1437 if ((speed != self->io.speed) && (speed != -1)) { 1438 /* Check for empty frame */ 1439 if (!skb->len) { 1440 ali_ircc_change_speed(self, speed); 1441 dev->trans_start = jiffies; 1442 spin_unlock_irqrestore(&self->lock, flags); 1443 dev_kfree_skb(skb); 1444 return 0; 1445 } else 1446 self->new_speed = speed; 1447 } 1448 1449 /* Register and copy this frame to DMA memory */ 1450 self->tx_fifo.queue[self->tx_fifo.free].start = self->tx_fifo.tail; 1451 self->tx_fifo.queue[self->tx_fifo.free].len = skb->len; 1452 self->tx_fifo.tail += skb->len; 1453 1454 self->stats.tx_bytes += skb->len; 1455 1456 memcpy(self->tx_fifo.queue[self->tx_fifo.free].start, skb->data, 1457 skb->len); 1458 1459 self->tx_fifo.len++; 1460 self->tx_fifo.free++; 1461 1462 /* Start transmit only if there is currently no transmit going on */ 1463 if (self->tx_fifo.len == 1) 1464 { 1465 /* Check if we must wait the min turn time or not */ 1466 mtt = irda_get_mtt(skb); 1467 1468 if (mtt) 1469 { 1470 /* Check how much time we have used already */ 1471 do_gettimeofday(&self->now); 1472 1473 diff = self->now.tv_usec - self->stamp.tv_usec; 1474 /* self->stamp is set from ali_ircc_dma_receive_complete() */ 1475 1476 IRDA_DEBUG(1, "%s(), ******* diff = %d ******* \n", __FUNCTION__ , diff); 1477 1478 if (diff < 0) 1479 diff += 1000000; 1480 1481 /* Check if the mtt is larger than the time we have 1482 * already used by all the protocol processing 1483 */ 1484 if (mtt > diff) 1485 { 1486 mtt -= diff; 1487 1488 /* 1489 * Use timer if delay larger than 1000 us, and 1490 * use udelay for smaller values which should 1491 * be acceptable 1492 */ 1493 if (mtt > 500) 1494 { 1495 /* Adjust for timer resolution */ 1496 mtt = (mtt+250) / 500; /* 4 discard, 5 get advanced, Let's round off */ 1497 1498 IRDA_DEBUG(1, "%s(), ************** mtt = %d ***********\n", __FUNCTION__ , mtt); 1499 1500 /* Setup timer */ 1501 if (mtt == 1) /* 500 us */ 1502 { 1503 switch_bank(iobase, BANK1); 1504 outb(TIMER_IIR_500, iobase+FIR_TIMER_IIR); 1505 } 1506 else if (mtt == 2) /* 1 ms */ 1507 { 1508 switch_bank(iobase, BANK1); 1509 outb(TIMER_IIR_1ms, iobase+FIR_TIMER_IIR); 1510 } 1511 else /* > 2ms -> 4ms */ 1512 { 1513 switch_bank(iobase, BANK1); 1514 outb(TIMER_IIR_2ms, iobase+FIR_TIMER_IIR); 1515 } 1516 1517 1518 /* Start timer */ 1519 outb(inb(iobase+FIR_CR) | CR_TIMER_EN, iobase+FIR_CR); 1520 self->io.direction = IO_XMIT; 1521 1522 /* Enable timer interrupt */ 1523 self->ier = IER_TIMER; 1524 SetCOMInterrupts(self, TRUE); 1525 1526 /* Timer will take care of the rest */ 1527 goto out; 1528 } 1529 else 1530 udelay(mtt); 1531 } // if (if (mtt > diff) 1532 }// if (mtt) 1533 1534 /* Enable EOM interrupt */ 1535 self->ier = IER_EOM; 1536 SetCOMInterrupts(self, TRUE); 1537 1538 /* Transmit frame */ 1539 ali_ircc_dma_xmit(self); 1540 } // if (self->tx_fifo.len == 1) 1541 1542 out: 1543 1544 /* Not busy transmitting anymore if window is not full */ 1545 if (self->tx_fifo.free < MAX_TX_WINDOW) 1546 netif_wake_queue(self->netdev); 1547 1548 /* Restore bank register */ 1549 switch_bank(iobase, BANK0); 1550 1551 dev->trans_start = jiffies; 1552 spin_unlock_irqrestore(&self->lock, flags); 1553 dev_kfree_skb(skb); 1554 1555 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); 1556 return 0; 1557} 1558 1559 1560static void ali_ircc_dma_xmit(struct ali_ircc_cb *self) 1561{ 1562 int iobase, tmp; 1563 unsigned char FIFO_OPTI, Hi, Lo; 1564 1565 1566 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __FUNCTION__ ); 1567 1568 iobase = self->io.fir_base; 1569 1570 /* FIFO threshold , this method comes from NDIS5 code */ 1571 1572 if(self->tx_fifo.queue[self->tx_fifo.ptr].len < TX_FIFO_Threshold) 1573 FIFO_OPTI = self->tx_fifo.queue[self->tx_fifo.ptr].len-1; 1574 else 1575 FIFO_OPTI = TX_FIFO_Threshold; 1576 1577 /* Disable DMA */ 1578 switch_bank(iobase, BANK1); 1579 outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR); 1580 1581 self->io.direction = IO_XMIT; 1582 1583 irda_setup_dma(self->io.dma, 1584 ((u8 *)self->tx_fifo.queue[self->tx_fifo.ptr].start - 1585 self->tx_buff.head) + self->tx_buff_dma, 1586 self->tx_fifo.queue[self->tx_fifo.ptr].len, 1587 DMA_TX_MODE); 1588 1589 /* Reset Tx FIFO */ 1590 switch_bank(iobase, BANK0); 1591 outb(LCR_A_FIFO_RESET, iobase+FIR_LCR_A); 1592 1593 /* Set Tx FIFO threshold */ 1594 if (self->fifo_opti_buf!=FIFO_OPTI) 1595 { 1596 switch_bank(iobase, BANK1); 1597 outb(FIFO_OPTI, iobase+FIR_FIFO_TR) ; 1598 self->fifo_opti_buf=FIFO_OPTI; 1599 } 1600 1601 /* Set Tx DMA threshold */ 1602 switch_bank(iobase, BANK1); 1603 outb(TX_DMA_Threshold, iobase+FIR_DMA_TR); 1604 1605 /* Set max Tx frame size */ 1606 Hi = (self->tx_fifo.queue[self->tx_fifo.ptr].len >> 8) & 0x0f; 1607 Lo = self->tx_fifo.queue[self->tx_fifo.ptr].len & 0xff; 1608 switch_bank(iobase, BANK2); 1609 outb(Hi, iobase+FIR_TX_DSR_HI); 1610 outb(Lo, iobase+FIR_TX_DSR_LO); 1611 1612 /* Disable SIP , Disable Brick Wall (we don't support in TX mode), Change to TX mode */ 1613 switch_bank(iobase, BANK0); 1614 tmp = inb(iobase+FIR_LCR_B); 1615 tmp &= ~0x20; // Disable SIP 1616 outb(((unsigned char)(tmp & 0x3f) | LCR_B_TX_MODE) & ~LCR_B_BW, iobase+FIR_LCR_B); 1617 IRDA_DEBUG(1, "%s(), ******* Change to TX mode: FIR_LCR_B = 0x%x ******* \n", __FUNCTION__ , inb(iobase+FIR_LCR_B)); 1618 1619 outb(0, iobase+FIR_LSR); 1620 1621 /* Enable DMA and Burst Mode */ 1622 switch_bank(iobase, BANK1); 1623 outb(inb(iobase+FIR_CR) | CR_DMA_EN | CR_DMA_BURST, iobase+FIR_CR); 1624 1625 switch_bank(iobase, BANK0); 1626 1627 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); 1628} 1629 1630static int ali_ircc_dma_xmit_complete(struct ali_ircc_cb *self) 1631{ 1632 int iobase; 1633 int ret = TRUE; 1634 1635 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __FUNCTION__ ); 1636 1637 iobase = self->io.fir_base; 1638 1639 /* Disable DMA */ 1640 switch_bank(iobase, BANK1); 1641 outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR); 1642 1643 /* Check for underrun! */ 1644 switch_bank(iobase, BANK0); 1645 if((inb(iobase+FIR_LSR) & LSR_FRAME_ABORT) == LSR_FRAME_ABORT) 1646 1647 { 1648 IRDA_ERROR("%s(), ********* LSR_FRAME_ABORT *********\n", __FUNCTION__); 1649 self->stats.tx_errors++; 1650 self->stats.tx_fifo_errors++; 1651 } 1652 else 1653 { 1654 self->stats.tx_packets++; 1655 } 1656 1657 /* Check if we need to change the speed */ 1658 if (self->new_speed) 1659 { 1660 ali_ircc_change_speed(self, self->new_speed); 1661 self->new_speed = 0; 1662 } 1663 1664 /* Finished with this frame, so prepare for next */ 1665 self->tx_fifo.ptr++; 1666 self->tx_fifo.len--; 1667 1668 /* Any frames to be sent back-to-back? */ 1669 if (self->tx_fifo.len) 1670 { 1671 ali_ircc_dma_xmit(self); 1672 1673 /* Not finished yet! */ 1674 ret = FALSE; 1675 } 1676 else 1677 { /* Reset Tx FIFO info */ 1678 self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0; 1679 self->tx_fifo.tail = self->tx_buff.head; 1680 } 1681 1682 /* Make sure we have room for more frames */ 1683 if (self->tx_fifo.free < MAX_TX_WINDOW) { 1684 /* Not busy transmitting anymore */ 1685 /* Tell the network layer, that we can accept more frames */ 1686 netif_wake_queue(self->netdev); 1687 } 1688 1689 switch_bank(iobase, BANK0); 1690 1691 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); 1692 return ret; 1693} 1694 1695/* 1696 * Function ali_ircc_dma_receive (self) 1697 * 1698 * Get ready for receiving a frame. The device will initiate a DMA 1699 * if it starts to receive a frame. 1700 * 1701 */ 1702static int ali_ircc_dma_receive(struct ali_ircc_cb *self) 1703{ 1704 int iobase, tmp; 1705 1706 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __FUNCTION__ ); 1707 1708 iobase = self->io.fir_base; 1709 1710 /* Reset Tx FIFO info */ 1711 self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0; 1712 self->tx_fifo.tail = self->tx_buff.head; 1713 1714 /* Disable DMA */ 1715 switch_bank(iobase, BANK1); 1716 outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR); 1717 1718 /* Reset Message Count */ 1719 switch_bank(iobase, BANK0); 1720 outb(0x07, iobase+FIR_LSR); 1721 1722 self->rcvFramesOverflow = FALSE; 1723 1724 self->LineStatus = inb(iobase+FIR_LSR) ; 1725 1726 /* Reset Rx FIFO info */ 1727 self->io.direction = IO_RECV; 1728 self->rx_buff.data = self->rx_buff.head; 1729 1730 /* Reset Rx FIFO */ 1731 // switch_bank(iobase, BANK0); 1732 outb(LCR_A_FIFO_RESET, iobase+FIR_LCR_A); 1733 1734 self->st_fifo.len = self->st_fifo.pending_bytes = 0; 1735 self->st_fifo.tail = self->st_fifo.head = 0; 1736 1737 irda_setup_dma(self->io.dma, self->rx_buff_dma, self->rx_buff.truesize, 1738 DMA_RX_MODE); 1739 1740 /* Set Receive Mode,Brick Wall */ 1741 //switch_bank(iobase, BANK0); 1742 tmp = inb(iobase+FIR_LCR_B); 1743 outb((unsigned char)(tmp &0x3f) | LCR_B_RX_MODE | LCR_B_BW , iobase + FIR_LCR_B); // 2000/12/1 05:16PM 1744 IRDA_DEBUG(1, "%s(), *** Change To RX mode: FIR_LCR_B = 0x%x *** \n", __FUNCTION__ , inb(iobase+FIR_LCR_B)); 1745 1746 /* Set Rx Threshold */ 1747 switch_bank(iobase, BANK1); 1748 outb(RX_FIFO_Threshold, iobase+FIR_FIFO_TR); 1749 outb(RX_DMA_Threshold, iobase+FIR_DMA_TR); 1750 1751 /* Enable DMA and Burst Mode */ 1752 // switch_bank(iobase, BANK1); 1753 outb(CR_DMA_EN | CR_DMA_BURST, iobase+FIR_CR); 1754 1755 switch_bank(iobase, BANK0); 1756 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); 1757 return 0; 1758} 1759 1760static int ali_ircc_dma_receive_complete(struct ali_ircc_cb *self) 1761{ 1762 struct st_fifo *st_fifo; 1763 struct sk_buff *skb; 1764 __u8 status, MessageCount; 1765 int len, i, iobase, val; 1766 1767 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __FUNCTION__ ); 1768 1769 st_fifo = &self->st_fifo; 1770 iobase = self->io.fir_base; 1771 1772 switch_bank(iobase, BANK0); 1773 MessageCount = inb(iobase+ FIR_LSR)&0x07; 1774 1775 if (MessageCount > 0) 1776 IRDA_DEBUG(0, "%s(), Messsage count = %d,\n", __FUNCTION__ , MessageCount); 1777 1778 for (i=0; i<=MessageCount; i++) 1779 { 1780 /* Bank 0 */ 1781 switch_bank(iobase, BANK0); 1782 status = inb(iobase+FIR_LSR); 1783 1784 switch_bank(iobase, BANK2); 1785 len = inb(iobase+FIR_RX_DSR_HI) & 0x0f; 1786 len = len << 8; 1787 len |= inb(iobase+FIR_RX_DSR_LO); 1788 1789 IRDA_DEBUG(1, "%s(), RX Length = 0x%.2x,\n", __FUNCTION__ , len); 1790 IRDA_DEBUG(1, "%s(), RX Status = 0x%.2x,\n", __FUNCTION__ , status); 1791 1792 if (st_fifo->tail >= MAX_RX_WINDOW) { 1793 IRDA_DEBUG(0, "%s(), window is full!\n", __FUNCTION__ ); 1794 continue; 1795 } 1796 1797 st_fifo->entries[st_fifo->tail].status = status; 1798 st_fifo->entries[st_fifo->tail].len = len; 1799 st_fifo->pending_bytes += len; 1800 st_fifo->tail++; 1801 st_fifo->len++; 1802 } 1803 1804 for (i=0; i<=MessageCount; i++) 1805 { 1806 /* Get first entry */ 1807 status = st_fifo->entries[st_fifo->head].status; 1808 len = st_fifo->entries[st_fifo->head].len; 1809 st_fifo->pending_bytes -= len; 1810 st_fifo->head++; 1811 st_fifo->len--; 1812 1813 /* Check for errors */ 1814 if ((status & 0xd8) || self->rcvFramesOverflow || (len==0)) 1815 { 1816 IRDA_DEBUG(0,"%s(), ************* RX Errors ************ \n", __FUNCTION__ ); 1817 1818 /* Skip frame */ 1819 self->stats.rx_errors++; 1820 1821 self->rx_buff.data += len; 1822 1823 if (status & LSR_FIFO_UR) 1824 { 1825 self->stats.rx_frame_errors++; 1826 IRDA_DEBUG(0,"%s(), ************* FIFO Errors ************ \n", __FUNCTION__ ); 1827 } 1828 if (status & LSR_FRAME_ERROR) 1829 { 1830 self->stats.rx_frame_errors++; 1831 IRDA_DEBUG(0,"%s(), ************* FRAME Errors ************ \n", __FUNCTION__ ); 1832 } 1833 1834 if (status & LSR_CRC_ERROR) 1835 { 1836 self->stats.rx_crc_errors++; 1837 IRDA_DEBUG(0,"%s(), ************* CRC Errors ************ \n", __FUNCTION__ ); 1838 } 1839 1840 if(self->rcvFramesOverflow) 1841 { 1842 self->stats.rx_frame_errors++; 1843 IRDA_DEBUG(0,"%s(), ************* Overran DMA buffer ************ \n", __FUNCTION__ ); 1844 } 1845 if(len == 0) 1846 { 1847 self->stats.rx_frame_errors++; 1848 IRDA_DEBUG(0,"%s(), ********** Receive Frame Size = 0 ********* \n", __FUNCTION__ ); 1849 } 1850 } 1851 else 1852 { 1853 1854 if (st_fifo->pending_bytes < 32) 1855 { 1856 switch_bank(iobase, BANK0); 1857 val = inb(iobase+FIR_BSR); 1858 if ((val& BSR_FIFO_NOT_EMPTY)== 0x80) 1859 { 1860 IRDA_DEBUG(0, "%s(), ************* BSR_FIFO_NOT_EMPTY ************ \n", __FUNCTION__ ); 1861 1862 /* Put this entry back in fifo */ 1863 st_fifo->head--; 1864 st_fifo->len++; 1865 st_fifo->pending_bytes += len; 1866 st_fifo->entries[st_fifo->head].status = status; 1867 st_fifo->entries[st_fifo->head].len = len; 1868 1869 /* 1870 * DMA not finished yet, so try again 1871 * later, set timer value, resolution 1872 * 500 us 1873 */ 1874 1875 switch_bank(iobase, BANK1); 1876 outb(TIMER_IIR_500, iobase+FIR_TIMER_IIR); // 2001/1/2 05:07PM 1877 1878 /* Enable Timer */ 1879 outb(inb(iobase+FIR_CR) | CR_TIMER_EN, iobase+FIR_CR); 1880 1881 return FALSE; /* I'll be back! */ 1882 } 1883 } 1884 1885 /* 1886 * Remember the time we received this frame, so we can 1887 * reduce the min turn time a bit since we will know 1888 * how much time we have used for protocol processing 1889 */ 1890 do_gettimeofday(&self->stamp); 1891 1892 skb = dev_alloc_skb(len+1); 1893 if (skb == NULL) 1894 { 1895 IRDA_WARNING("%s(), memory squeeze, " 1896 "dropping frame.\n", 1897 __FUNCTION__); 1898 self->stats.rx_dropped++; 1899 1900 return FALSE; 1901 } 1902 1903 /* Make sure IP header gets aligned */ 1904 skb_reserve(skb, 1); 1905 1906 /* Copy frame without CRC, CRC is removed by hardware*/ 1907 skb_put(skb, len); 1908 memcpy(skb->data, self->rx_buff.data, len); 1909 1910 /* Move to next frame */ 1911 self->rx_buff.data += len; 1912 self->stats.rx_bytes += len; 1913 self->stats.rx_packets++; 1914 1915 skb->dev = self->netdev; 1916 skb->mac.raw = skb->data; 1917 skb->protocol = htons(ETH_P_IRDA); 1918 netif_rx(skb); 1919 self->netdev->last_rx = jiffies; 1920 } 1921 } 1922 1923 switch_bank(iobase, BANK0); 1924 1925 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); 1926 return TRUE; 1927} 1928 1929 1930 1931/* 1932 * Function ali_ircc_sir_hard_xmit (skb, dev) 1933 * 1934 * Transmit the frame! 1935 * 1936 */ 1937static int ali_ircc_sir_hard_xmit(struct sk_buff *skb, struct net_device *dev) 1938{ 1939 struct ali_ircc_cb *self; 1940 unsigned long flags; 1941 int iobase; 1942 __u32 speed; 1943 1944 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__ ); 1945 1946 IRDA_ASSERT(dev != NULL, return 0;); 1947 1948 self = (struct ali_ircc_cb *) dev->priv; 1949 IRDA_ASSERT(self != NULL, return 0;); 1950 1951 iobase = self->io.sir_base; 1952 1953 netif_stop_queue(dev); 1954 1955 /* Make sure tests *& speed change are atomic */ 1956 spin_lock_irqsave(&self->lock, flags); 1957 1958 /* Note : you should make sure that speed changes are not going 1959 * to corrupt any outgoing frame. Look at nsc-ircc for the gory 1960 * details - Jean II */ 1961 1962 /* Check if we need to change the speed */ 1963 speed = irda_get_next_speed(skb); 1964 if ((speed != self->io.speed) && (speed != -1)) { 1965 /* Check for empty frame */ 1966 if (!skb->len) { 1967 ali_ircc_change_speed(self, speed); 1968 dev->trans_start = jiffies; 1969 spin_unlock_irqrestore(&self->lock, flags); 1970 dev_kfree_skb(skb); 1971 return 0; 1972 } else 1973 self->new_speed = speed; 1974 } 1975 1976 /* Init tx buffer */ 1977 self->tx_buff.data = self->tx_buff.head; 1978 1979 /* Copy skb to tx_buff while wrapping, stuffing and making CRC */ 1980 self->tx_buff.len = async_wrap_skb(skb, self->tx_buff.data, 1981 self->tx_buff.truesize); 1982 1983 self->stats.tx_bytes += self->tx_buff.len; 1984 1985 /* Turn on transmit finished interrupt. Will fire immediately! */ 1986 outb(UART_IER_THRI, iobase+UART_IER); 1987 1988 dev->trans_start = jiffies; 1989 spin_unlock_irqrestore(&self->lock, flags); 1990 1991 dev_kfree_skb(skb); 1992 1993 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); 1994 1995 return 0; 1996} 1997 1998 1999/* 2000 * Function ali_ircc_net_ioctl (dev, rq, cmd) 2001 * 2002 * Process IOCTL commands for this device 2003 * 2004 */ 2005static int ali_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 2006{ 2007 struct if_irda_req *irq = (struct if_irda_req *) rq; 2008 struct ali_ircc_cb *self; 2009 unsigned long flags; 2010 int ret = 0; 2011 2012 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__ ); 2013 2014 IRDA_ASSERT(dev != NULL, return -1;); 2015 2016 self = dev->priv; 2017 2018 IRDA_ASSERT(self != NULL, return -1;); 2019 2020 IRDA_DEBUG(2, "%s(), %s, (cmd=0x%X)\n", __FUNCTION__ , dev->name, cmd); 2021 2022 switch (cmd) { 2023 case SIOCSBANDWIDTH: /* Set bandwidth */ 2024 IRDA_DEBUG(1, "%s(), SIOCSBANDWIDTH\n", __FUNCTION__ ); 2025 /* 2026 * This function will also be used by IrLAP to change the 2027 * speed, so we still must allow for speed change within 2028 * interrupt context. 2029 */ 2030 if (!in_interrupt() && !capable(CAP_NET_ADMIN)) 2031 return -EPERM; 2032 2033 spin_lock_irqsave(&self->lock, flags); 2034 ali_ircc_change_speed(self, irq->ifr_baudrate); 2035 spin_unlock_irqrestore(&self->lock, flags); 2036 break; 2037 case SIOCSMEDIABUSY: /* Set media busy */ 2038 IRDA_DEBUG(1, "%s(), SIOCSMEDIABUSY\n", __FUNCTION__ ); 2039 if (!capable(CAP_NET_ADMIN)) 2040 return -EPERM; 2041 irda_device_set_media_busy(self->netdev, TRUE); 2042 break; 2043 case SIOCGRECEIVING: /* Check if we are receiving right now */ 2044 IRDA_DEBUG(2, "%s(), SIOCGRECEIVING\n", __FUNCTION__ ); 2045 /* This is protected */ 2046 irq->ifr_receiving = ali_ircc_is_receiving(self); 2047 break; 2048 default: 2049 ret = -EOPNOTSUPP; 2050 } 2051 2052 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); 2053 2054 return ret; 2055} 2056 2057/* 2058 * Function ali_ircc_is_receiving (self) 2059 * 2060 * Return TRUE is we are currently receiving a frame 2061 * 2062 */ 2063static int ali_ircc_is_receiving(struct ali_ircc_cb *self) 2064{ 2065 unsigned long flags; 2066 int status = FALSE; 2067 int iobase; 2068 2069 IRDA_DEBUG(2, "%s(), ---------------- Start -----------------\n", __FUNCTION__ ); 2070 2071 IRDA_ASSERT(self != NULL, return FALSE;); 2072 2073 spin_lock_irqsave(&self->lock, flags); 2074 2075 if (self->io.speed > 115200) 2076 { 2077 iobase = self->io.fir_base; 2078 2079 switch_bank(iobase, BANK1); 2080 if((inb(iobase+FIR_FIFO_FR) & 0x3f) != 0) 2081 { 2082 /* We are receiving something */ 2083 IRDA_DEBUG(1, "%s(), We are receiving something\n", __FUNCTION__ ); 2084 status = TRUE; 2085 } 2086 switch_bank(iobase, BANK0); 2087 } 2088 else 2089 { 2090 status = (self->rx_buff.state != OUTSIDE_FRAME); 2091 } 2092 2093 spin_unlock_irqrestore(&self->lock, flags); 2094 2095 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); 2096 2097 return status; 2098} 2099 2100static struct net_device_stats *ali_ircc_net_get_stats(struct net_device *dev) 2101{ 2102 struct ali_ircc_cb *self = (struct ali_ircc_cb *) dev->priv; 2103 2104 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__ ); 2105 2106 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); 2107 2108 return &self->stats; 2109} 2110 2111static void ali_ircc_suspend(struct ali_ircc_cb *self) 2112{ 2113 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__ ); 2114 2115 IRDA_MESSAGE("%s, Suspending\n", driver_name); 2116 2117 if (self->io.suspended) 2118 return; 2119 2120 ali_ircc_net_close(self->netdev); 2121 2122 self->io.suspended = 1; 2123 2124 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); 2125} 2126 2127static void ali_ircc_wakeup(struct ali_ircc_cb *self) 2128{ 2129 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__ ); 2130 2131 if (!self->io.suspended) 2132 return; 2133 2134 ali_ircc_net_open(self->netdev); 2135 2136 IRDA_MESSAGE("%s, Waking up\n", driver_name); 2137 2138 self->io.suspended = 0; 2139 2140 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); 2141} 2142 2143static int ali_ircc_pmproc(struct pm_dev *dev, pm_request_t rqst, void *data) 2144{ 2145 struct ali_ircc_cb *self = (struct ali_ircc_cb*) dev->data; 2146 2147 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __FUNCTION__ ); 2148 2149 if (self) { 2150 switch (rqst) { 2151 case PM_SUSPEND: 2152 ali_ircc_suspend(self); 2153 break; 2154 case PM_RESUME: 2155 ali_ircc_wakeup(self); 2156 break; 2157 } 2158 } 2159 2160 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); 2161 2162 return 0; 2163} 2164 2165 2166/* ALi Chip Function */ 2167 2168static void SetCOMInterrupts(struct ali_ircc_cb *self , unsigned char enable) 2169{ 2170 2171 unsigned char newMask; 2172 2173 int iobase = self->io.fir_base; /* or sir_base */ 2174 2175 IRDA_DEBUG(2, "%s(), -------- Start -------- ( Enable = %d )\n", __FUNCTION__ , enable); 2176 2177 /* Enable the interrupt which we wish to */ 2178 if (enable){ 2179 if (self->io.direction == IO_XMIT) 2180 { 2181 if (self->io.speed > 115200) /* FIR, MIR */ 2182 { 2183 newMask = self->ier; 2184 } 2185 else /* SIR */ 2186 { 2187 newMask = UART_IER_THRI | UART_IER_RDI; 2188 } 2189 } 2190 else { 2191 if (self->io.speed > 115200) /* FIR, MIR */ 2192 { 2193 newMask = self->ier; 2194 } 2195 else /* SIR */ 2196 { 2197 newMask = UART_IER_RDI; 2198 } 2199 } 2200 } 2201 else /* Disable all the interrupts */ 2202 { 2203 newMask = 0x00; 2204 2205 } 2206 2207 //SIR and FIR has different registers 2208 if (self->io.speed > 115200) 2209 { 2210 switch_bank(iobase, BANK0); 2211 outb(newMask, iobase+FIR_IER); 2212 } 2213 else 2214 outb(newMask, iobase+UART_IER); 2215 2216 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); 2217} 2218 2219static void SIR2FIR(int iobase) 2220{ 2221 //unsigned char tmp; 2222 2223 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __FUNCTION__ ); 2224 2225 /* Already protected (change_speed() or setup()), no need to lock. 2226 * Jean II */ 2227 2228 outb(0x28, iobase+UART_MCR); 2229 outb(0x68, iobase+UART_MCR); 2230 outb(0x88, iobase+UART_MCR); 2231 2232 outb(0x60, iobase+FIR_MCR); /* Master Reset */ 2233 outb(0x20, iobase+FIR_MCR); /* Master Interrupt Enable */ 2234 2235 //tmp = inb(iobase+FIR_LCR_B); /* SIP enable */ 2236 //tmp |= 0x20; 2237 //outb(tmp, iobase+FIR_LCR_B); 2238 2239 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); 2240} 2241 2242static void FIR2SIR(int iobase) 2243{ 2244 unsigned char val; 2245 2246 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __FUNCTION__ ); 2247 2248 /* Already protected (change_speed() or setup()), no need to lock. 2249 * Jean II */ 2250 2251 outb(0x20, iobase+FIR_MCR); /* IRQ to low */ 2252 outb(0x00, iobase+UART_IER); 2253 2254 outb(0xA0, iobase+FIR_MCR); /* Don't set master reset */ 2255 outb(0x00, iobase+UART_FCR); 2256 outb(0x07, iobase+UART_FCR); 2257 2258 val = inb(iobase+UART_RX); 2259 val = inb(iobase+UART_LSR); 2260 val = inb(iobase+UART_MSR); 2261 2262 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __FUNCTION__ ); 2263} 2264 2265MODULE_AUTHOR("Benjamin Kong <benjamin_kong@ali.com.tw>"); 2266MODULE_DESCRIPTION("ALi FIR Controller Driver"); 2267MODULE_LICENSE("GPL"); 2268 2269 2270module_param_array(io, int, NULL, 0); 2271MODULE_PARM_DESC(io, "Base I/O addresses"); 2272module_param_array(irq, int, NULL, 0); 2273MODULE_PARM_DESC(irq, "IRQ lines"); 2274module_param_array(dma, int, NULL, 0); 2275MODULE_PARM_DESC(dma, "DMA channels"); 2276 2277module_init(ali_ircc_init); 2278module_exit(ali_ircc_cleanup);