1/* 2 * This program is free software; you can redistribute it and/or 3 * modify it under the terms of the GNU General Public License 4 * as published by the Free Software Foundation; either version 5 * 2 of the License, or (at your option) any later version. 6 * 7 * Original driver code supplied by Multi-Tech 8 * 9 * Changes 10 * 1/9/98 alan@redhat.com Merge to 2.0.x kernel tree 11 * Obtain and use official major/minors 12 * Loader switched to a misc device 13 * (fixed range check bug as a side effect) 14 * Printk clean up 15 * 9/12/98 alan@redhat.com Rough port to 2.1.x 16 * 17 * 10/6/99 sameer Merged the ISA and PCI drivers to 18 * a new unified driver. 19 * 09/06/01 acme@conectiva.com.br use capable, not suser, do 20 * restore_flags on failure in 21 * isicom_send_break, verify put_user 22 * result 23 * *********************************************************** 24 * 25 * To use this driver you also need the support package. You 26 * can find this in RPM format on 27 * ftp://ftp.linux.org.uk/pub/linux/alan 28 * 29 * You can find the original tools for this direct from Multitech 30 * ftp://ftp.multitech.com/ISI-Cards/ 31 * 32 * Having installed the cards the module options (/etc/modules.conf) 33 * 34 * options isicom io=card1,card2,card3,card4 irq=card1,card2,card3,card4 35 * 36 * Omit those entries for boards you don't have installed. 37 * 38 */ 39 40#include <linux/module.h> 41#include <linux/version.h> 42#include <linux/kernel.h> 43#include <linux/tty.h> 44#include <linux/termios.h> 45#include <linux/fs.h> 46#include <linux/sched.h> 47#include <linux/serial.h> 48#include <linux/mm.h> 49#include <linux/miscdevice.h> 50#include <linux/interrupt.h> 51#include <linux/timer.h> 52#include <linux/ioport.h> 53 54#include <asm/segment.h> 55#include <asm/uaccess.h> 56#include <asm/io.h> 57#include <asm/system.h> 58 59#include <linux/pci.h> 60 61#include <linux/isicom.h> 62 63static struct pci_device_id isicom_pci_tbl[] = { 64 { VENDOR_ID, 0x2028, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, 65 { VENDOR_ID, 0x2051, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, 66 { VENDOR_ID, 0x2052, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, 67 { VENDOR_ID, 0x2053, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, 68 { VENDOR_ID, 0x2054, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, 69 { VENDOR_ID, 0x2055, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, 70 { VENDOR_ID, 0x2056, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, 71 { VENDOR_ID, 0x2057, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, 72 { VENDOR_ID, 0x2058, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, 73 { 0 } 74}; 75MODULE_DEVICE_TABLE(pci, isicom_pci_tbl); 76 77static int isicom_refcount; 78static int prev_card = 3; /* start servicing isi_card[0] */ 79static struct isi_board * irq_to_board[16]; 80static struct tty_driver isicom_normal, isicom_callout; 81static struct tty_struct * isicom_table[PORT_COUNT]; 82static struct termios * isicom_termios[PORT_COUNT]; 83static struct termios * isicom_termios_locked[PORT_COUNT]; 84 85static struct isi_board isi_card[BOARD_COUNT]; 86static struct isi_port isi_ports[PORT_COUNT]; 87 88DECLARE_TASK_QUEUE(tq_isicom); 89 90static struct timer_list tx; 91static char re_schedule = 1; 92#ifdef ISICOM_DEBUG 93static unsigned long tx_count = 0; 94#endif 95 96static int ISILoad_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg); 97 98static void isicom_tx(unsigned long _data); 99static void isicom_start(struct tty_struct * tty); 100 101static unsigned char * tmp_buf = 0; 102static DECLARE_MUTEX(tmp_buf_sem); 103 104/* baud index mappings from linux defns to isi */ 105 106static signed char linuxb_to_isib[] = { 107 -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 15, 16, 17, 108 18, 19 109}; 110 111/* 112 * Firmware loader driver specific routines 113 * 114 */ 115 116static struct file_operations ISILoad_fops = { 117 owner: THIS_MODULE, 118 ioctl: ISILoad_ioctl, 119}; 120 121struct miscdevice isiloader_device = { 122 ISILOAD_MISC_MINOR, "isictl", &ISILoad_fops 123}; 124 125 126static inline int WaitTillCardIsFree(unsigned short base) 127{ 128 unsigned long count=0; 129 while( (!(inw(base+0xe) & 0x1)) && (count++ < 6000000)); 130 if (inw(base+0xe)&0x1) 131 return 0; 132 else 133 return 1; 134} 135 136static int ISILoad_ioctl(struct inode *inode, struct file *filp, 137 unsigned int cmd, unsigned long arg) 138{ 139 unsigned int card, i, j, signature, status, portcount = 0; 140 unsigned short word_count, base; 141 bin_frame frame; 142 /* exec_record exec_rec; */ 143 144 if(get_user(card, (int *)arg)) 145 return -EFAULT; 146 147 if(card < 0 || card >= BOARD_COUNT) 148 return -ENXIO; 149 150 base=isi_card[card].base; 151 152 if(base==0) 153 return -ENXIO; /* disabled or not used */ 154 155 switch(cmd) { 156 case MIOCTL_RESET_CARD: 157 if (!capable(CAP_SYS_ADMIN)) 158 return -EPERM; 159 printk(KERN_DEBUG "ISILoad:Resetting Card%d at 0x%x ",card+1,base); 160 161 inw(base+0x8); 162 163 for(i=jiffies+HZ/100;time_before(jiffies, i);); 164 165 outw(0,base+0x8); /* Reset */ 166 167 for(j=1;j<=3;j++) { 168 for(i=jiffies+HZ;time_before(jiffies, i);); 169 printk("."); 170 } 171 signature=(inw(base+0x4)) & 0xff; 172 if (isi_card[card].isa) { 173 174 if (!(inw(base+0xe) & 0x1) || (inw(base+0x2))) { 175#ifdef ISICOM_DEBUG 176 printk("\nbase+0x2=0x%x , base+0xe=0x%x",inw(base+0x2),inw(base+0xe)); 177#endif 178 printk("\nISILoad:ISA Card%d reset failure (Possible bad I/O Port Address 0x%x).\n",card+1,base); 179 return -EIO; 180 } 181 } 182 else { 183 portcount = inw(base+0x2); 184 if (!(inw(base+0xe) & 0x1) || ((portcount!=0) && (portcount!=4) && (portcount!=8))) { 185#ifdef ISICOM_DEBUG 186 printk("\nbase+0x2=0x%x , base+0xe=0x%x",inw(base+0x2),inw(base+0xe)); 187#endif 188 printk("\nISILoad:PCI Card%d reset failure (Possible bad I/O Port Address 0x%x).\n",card+1,base); 189 return -EIO; 190 } 191 } 192 switch(signature) { 193 case 0xa5: 194 case 0xbb: 195 case 0xdd: 196 if (isi_card[card].isa) 197 isi_card[card].port_count = 8; 198 else { 199 if (portcount == 4) 200 isi_card[card].port_count = 4; 201 else 202 isi_card[card].port_count = 8; 203 } 204 isi_card[card].shift_count = 12; 205 break; 206 207 case 0xcc: isi_card[card].port_count = 16; 208 isi_card[card].shift_count = 11; 209 break; 210 211 default: printk("ISILoad:Card%d reset failure (Possible bad I/O Port Address 0x%x).\n",card+1,base); 212#ifdef ISICOM_DEBUG 213 printk("Sig=0x%x\n",signature); 214#endif 215 return -EIO; 216 } 217 printk("-Done\n"); 218 return put_user(signature,(unsigned int*)arg); 219 220 case MIOCTL_LOAD_FIRMWARE: 221 if (!capable(CAP_SYS_ADMIN)) 222 return -EPERM; 223 224 if(copy_from_user(&frame, (void *) arg, sizeof(bin_frame))) 225 return -EFAULT; 226 227 if (WaitTillCardIsFree(base)) 228 return -EIO; 229 230 outw(0xf0,base); /* start upload sequence */ 231 outw(0x00,base); 232 outw((frame.addr), base);/* lsb of adderess */ 233 234 word_count=(frame.count >> 1) + frame.count % 2; 235 outw(word_count, base); 236 InterruptTheCard(base); 237 238 for(i=0;i<=0x2f;i++); /* a wee bit of delay */ 239 240 if (WaitTillCardIsFree(base)) 241 return -EIO; 242 243 if ((status=inw(base+0x4))!=0) { 244 printk(KERN_WARNING "ISILoad:Card%d rejected load header:\nAddress:0x%x \nCount:0x%x \nStatus:0x%x \n", 245 card+1, frame.addr, frame.count, status); 246 return -EIO; 247 } 248 outsw(base, (void *) frame.bin_data, word_count); 249 250 InterruptTheCard(base); 251 252 for(i=0;i<=0x0f;i++); /* another wee bit of delay */ 253 254 if (WaitTillCardIsFree(base)) 255 return -EIO; 256 257 if ((status=inw(base+0x4))!=0) { 258 printk(KERN_ERR "ISILoad:Card%d got out of sync.Card Status:0x%x\n",card+1, status); 259 return -EIO; 260 } 261 return 0; 262 263 case MIOCTL_READ_FIRMWARE: 264 if (!capable(CAP_SYS_ADMIN)) 265 return -EPERM; 266 267 if(copy_from_user(&frame, (void *) arg, sizeof(bin_header))) 268 return -EFAULT; 269 270 if (WaitTillCardIsFree(base)) 271 return -EIO; 272 273 outw(0xf1,base); /* start download sequence */ 274 outw(0x00,base); 275 outw((frame.addr), base);/* lsb of adderess */ 276 277 word_count=(frame.count >> 1) + frame.count % 2; 278 outw(word_count+1, base); 279 InterruptTheCard(base); 280 281 for(i=0;i<=0xf;i++); /* a wee bit of delay */ 282 283 if (WaitTillCardIsFree(base)) 284 return -EIO; 285 286 if ((status=inw(base+0x4))!=0) { 287 printk(KERN_WARNING "ISILoad:Card%d rejected verify header:\nAddress:0x%x \nCount:0x%x \nStatus:0x%x \n", 288 card+1, frame.addr, frame.count, status); 289 return -EIO; 290 } 291 292 inw(base); 293 insw(base, frame.bin_data, word_count); 294 InterruptTheCard(base); 295 296 for(i=0;i<=0x0f;i++); /* another wee bit of delay */ 297 298 if (WaitTillCardIsFree(base)) 299 return -EIO; 300 301 if ((status=inw(base+0x4))!=0) { 302 printk(KERN_ERR "ISILoad:Card%d verify got out of sync.Card Status:0x%x\n",card+1, status); 303 return -EIO; 304 } 305 306 if(copy_to_user((void *) arg, &frame, sizeof(bin_frame))) 307 return -EFAULT; 308 return 0; 309 310 case MIOCTL_XFER_CTRL: 311 if (!capable(CAP_SYS_ADMIN)) 312 return -EPERM; 313 if (WaitTillCardIsFree(base)) 314 return -EIO; 315 316 outw(0xf2, base); 317 outw(0x800, base); 318 outw(0x0, base); 319 outw(0x0, base); 320 InterruptTheCard(base); 321 outw(0x0, base+0x4); /* for ISI4608 cards */ 322 323 isi_card[card].status |= FIRMWARE_LOADED; 324 return 0; 325 326 default: 327#ifdef ISICOM_DEBUG 328 printk(KERN_DEBUG "ISILoad: Received Ioctl cmd 0x%x.\n", cmd); 329#endif 330 return -ENOIOCTLCMD; 331 332 } 333 334} 335 336 337/* 338 * ISICOM Driver specific routines ... 339 * 340 */ 341 342static inline int isicom_paranoia_check(struct isi_port const * port, kdev_t dev, 343 const char * routine) 344{ 345#ifdef ISICOM_DEBUG 346 static const char * badmagic = 347 KERN_WARNING "ISICOM: Warning: bad isicom magic for dev %s in %s.\n"; 348 static const char * badport = 349 KERN_WARNING "ISICOM: Warning: NULL isicom port for dev %s in %s.\n"; 350 if (!port) { 351 printk(badport, kdevname(dev), routine); 352 return 1; 353 } 354 if (port->magic != ISICOM_MAGIC) { 355 printk(badmagic, kdevname(dev), routine); 356 return 1; 357 } 358#endif 359 return 0; 360} 361 362static inline void schedule_bh(struct isi_port * port) 363{ 364 queue_task(&port->bh_tqueue, &tq_isicom); 365 mark_bh(ISICOM_BH); 366} 367 368/* Transmitter */ 369 370static void isicom_tx(unsigned long _data) 371{ 372 short count = (BOARD_COUNT-1), card, base; 373 short txcount, wait, wrd, residue, word_count, cnt; 374 struct isi_port * port; 375 struct tty_struct * tty; 376 unsigned long flags; 377 378#ifdef ISICOM_DEBUG 379 ++tx_count; 380#endif 381 382 /* find next active board */ 383 card = (prev_card + 1) & 0x0003; 384 while(count-- > 0) { 385 if (isi_card[card].status & BOARD_ACTIVE) 386 break; 387 card = (card + 1) & 0x0003; 388 } 389 if (!(isi_card[card].status & BOARD_ACTIVE)) 390 goto sched_again; 391 392 prev_card = card; 393 394 count = isi_card[card].port_count; 395 port = isi_card[card].ports; 396 base = isi_card[card].base; 397 for (;count > 0;count--, port++) { 398 /* port not active or tx disabled to force flow control */ 399 if (!(port->status & ISI_TXOK)) 400 continue; 401 402 tty = port->tty; 403 save_flags(flags); cli(); 404 txcount = MIN(TX_SIZE, port->xmit_cnt); 405 if ((txcount <= 0) || tty->stopped || tty->hw_stopped) { 406 restore_flags(flags); 407 continue; 408 } 409 wait = 200; 410 while(((inw(base+0x0e) & 0x01) == 0) && (wait-- > 0)); 411 if (wait <= 0) { 412 restore_flags(flags); 413#ifdef ISICOM_DEBUG 414 printk(KERN_DEBUG "ISICOM: isicom_tx:Card(0x%x) found busy.\n", 415 card); 416#endif 417 continue; 418 } 419 if (!(inw(base + 0x02) & (1 << port->channel))) { 420 restore_flags(flags); 421#ifdef ISICOM_DEBUG 422 printk(KERN_DEBUG "ISICOM: isicom_tx: cannot tx to 0x%x:%d.\n", 423 base, port->channel + 1); 424#endif 425 continue; 426 } 427#ifdef ISICOM_DEBUG 428 printk(KERN_DEBUG "ISICOM: txing %d bytes, port%d.\n", 429 txcount, port->channel+1); 430#endif 431 outw((port->channel << isi_card[card].shift_count) | txcount 432 , base); 433 residue = NO; 434 wrd = 0; 435 while (1) { 436 cnt = MIN(txcount, (SERIAL_XMIT_SIZE - port->xmit_tail)); 437 if (residue == YES) { 438 residue = NO; 439 if (cnt > 0) { 440 wrd |= (port->xmit_buf[port->xmit_tail] << 8); 441 port->xmit_tail = (port->xmit_tail + 1) & (SERIAL_XMIT_SIZE - 1); 442 port->xmit_cnt--; 443 txcount--; 444 cnt--; 445 outw(wrd, base); 446 } 447 else { 448 outw(wrd, base); 449 break; 450 } 451 } 452 if (cnt <= 0) break; 453 word_count = cnt >> 1; 454 outsw(base, port->xmit_buf+port->xmit_tail, word_count); 455 port->xmit_tail = (port->xmit_tail + (word_count << 1)) & 456 (SERIAL_XMIT_SIZE - 1); 457 txcount -= (word_count << 1); 458 port->xmit_cnt -= (word_count << 1); 459 if (cnt & 0x0001) { 460 residue = YES; 461 wrd = port->xmit_buf[port->xmit_tail]; 462 port->xmit_tail = (port->xmit_tail + 1) & (SERIAL_XMIT_SIZE - 1); 463 port->xmit_cnt--; 464 txcount--; 465 } 466 } 467 468 InterruptTheCard(base); 469 if (port->xmit_cnt <= 0) 470 port->status &= ~ISI_TXOK; 471 if (port->xmit_cnt <= WAKEUP_CHARS) 472 schedule_bh(port); 473 restore_flags(flags); 474 } 475 476 /* schedule another tx for hopefully in about 10ms */ 477sched_again: 478 if (!re_schedule) 479 return; 480 init_timer(&tx); 481 tx.expires = jiffies + HZ/100; 482 tx.data = 0; 483 tx.function = isicom_tx; 484 add_timer(&tx); 485 486 return; 487} 488 489/* Interrupt handlers */ 490 491static void do_isicom_bh(void) 492{ 493 run_task_queue(&tq_isicom); 494} 495 496 497 498static void isicom_bottomhalf(void * data) 499{ 500 struct isi_port * port = (struct isi_port *) data; 501 struct tty_struct * tty = port->tty; 502 503 if (!tty) 504 return; 505 506 if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && 507 tty->ldisc.write_wakeup) 508 (tty->ldisc.write_wakeup)(tty); 509 wake_up_interruptible(&tty->write_wait); 510} 511 512/* main interrupt handler routine */ 513static void isicom_interrupt(int irq, void * dev_id, struct pt_regs * regs) 514{ 515 struct isi_board * card; 516 struct isi_port * port; 517 struct tty_struct * tty; 518 unsigned short base, header, word_count, count; 519 unsigned char channel; 520 short byte_count; 521 522 /* 523 * find the source of interrupt 524 */ 525 526 for(count = 0; count < BOARD_COUNT; count++) { 527 card = &isi_card[count]; 528 if (card->base != 0) { 529 if (((card->isa == YES) && (card->irq == irq)) || 530 ((card->isa == NO) && (card->irq == irq) && (inw(card->base+0x0e) & 0x02))) 531 break; 532 } 533 card = NULL; 534 } 535 536 if (!card || !(card->status & FIRMWARE_LOADED)) { 537/* printk(KERN_DEBUG "ISICOM: interrupt: not handling irq%d!.\n", irq);*/ 538 return; 539 } 540 541 base = card->base; 542 if (card->isa == NO) { 543 /* 544 * disable any interrupts from the PCI card and lower the 545 * interrupt line 546 */ 547 outw(0x8000, base+0x04); 548 ClearInterrupt(base); 549 } 550 551 inw(base); /* get the dummy word out */ 552 header = inw(base); 553 channel = (header & 0x7800) >> card->shift_count; 554 byte_count = header & 0xff; 555#ifdef ISICOM_DEBUG 556 printk(KERN_DEBUG "ISICOM:Intr:(0x%x:%d).\n", base, channel+1); 557#endif 558 if ((channel+1) > card->port_count) { 559 printk(KERN_WARNING "ISICOM: isicom_interrupt(0x%x): %d(channel) > port_count.\n", 560 base, channel+1); 561 if (card->isa) 562 ClearInterrupt(base); 563 else 564 outw(0x0000, base+0x04); /* enable interrupts */ 565 return; 566 } 567 port = card->ports + channel; 568 if (!(port->flags & ASYNC_INITIALIZED)) { 569 if (card->isa) 570 ClearInterrupt(base); 571 else 572 outw(0x0000, base+0x04); /* enable interrupts */ 573 return; 574 } 575 576 tty = port->tty; 577 578 if (header & 0x8000) { /* Status Packet */ 579 header = inw(base); 580 switch(header & 0xff) { 581 case 0: /* Change in EIA signals */ 582 583 if (port->flags & ASYNC_CHECK_CD) { 584 if (port->status & ISI_DCD) { 585 if (!(header & ISI_DCD)) { 586 /* Carrier has been lost */ 587#ifdef ISICOM_DEBUG 588 printk(KERN_DEBUG "ISICOM: interrupt: DCD->low.\n"); 589#endif 590 port->status &= ~ISI_DCD; 591 if (!((port->flags & ASYNC_CALLOUT_ACTIVE) && 592 (port->flags & ASYNC_CALLOUT_NOHUP))) { 593 MOD_INC_USE_COUNT; 594 if (schedule_task(&port->hangup_tq) == 0) 595 MOD_DEC_USE_COUNT; 596 } 597 } 598 } 599 else { 600 if (header & ISI_DCD) { 601 /* Carrier has been detected */ 602#ifdef ISICOM_DEBUG 603 printk(KERN_DEBUG "ISICOM: interrupt: DCD->high.\n"); 604#endif 605 port->status |= ISI_DCD; 606 wake_up_interruptible(&port->open_wait); 607 } 608 } 609 } 610 else { 611 if (header & ISI_DCD) 612 port->status |= ISI_DCD; 613 else 614 port->status &= ~ISI_DCD; 615 } 616 617 if (port->flags & ASYNC_CTS_FLOW) { 618 if (port->tty->hw_stopped) { 619 if (header & ISI_CTS) { 620 port->tty->hw_stopped = 0; 621 /* start tx ing */ 622 port->status |= (ISI_TXOK | ISI_CTS); 623 schedule_bh(port); 624 } 625 } 626 else { 627 if (!(header & ISI_CTS)) { 628 port->tty->hw_stopped = 1; 629 /* stop tx ing */ 630 port->status &= ~(ISI_TXOK | ISI_CTS); 631 } 632 } 633 } 634 else { 635 if (header & ISI_CTS) 636 port->status |= ISI_CTS; 637 else 638 port->status &= ~ISI_CTS; 639 } 640 641 if (header & ISI_DSR) 642 port->status |= ISI_DSR; 643 else 644 port->status &= ~ISI_DSR; 645 646 if (header & ISI_RI) 647 port->status |= ISI_RI; 648 else 649 port->status &= ~ISI_RI; 650 651 break; 652 653 case 1: /* Received Break !!! */ 654 if (tty->flip.count >= TTY_FLIPBUF_SIZE) 655 break; 656 *tty->flip.flag_buf_ptr++ = TTY_BREAK; 657 /* dunno if this is right */ 658 *tty->flip.char_buf_ptr++ = 0; 659 tty->flip.count++; 660 if (port->flags & ASYNC_SAK) 661 do_SAK(tty); 662 queue_task(&tty->flip.tqueue, &tq_timer); 663 break; 664 665 case 2: /* Statistics */ 666 printk(KERN_DEBUG "ISICOM: isicom_interrupt: stats!!!.\n"); 667 break; 668 669 default: 670 printk(KERN_WARNING "ISICOM: Intr: Unknown code in status packet.\n"); 671 break; 672 } 673 } 674 else { /* Data Packet */ 675 count = MIN(byte_count, (TTY_FLIPBUF_SIZE - tty->flip.count)); 676#ifdef ISICOM_DEBUG 677 printk(KERN_DEBUG "ISICOM: Intr: Can rx %d of %d bytes.\n", 678 count, byte_count); 679#endif 680 word_count = count >> 1; 681 insw(base, tty->flip.char_buf_ptr, word_count); 682 tty->flip.char_buf_ptr += (word_count << 1); 683 byte_count -= (word_count << 1); 684 if (count & 0x0001) { 685 *tty->flip.char_buf_ptr++ = (char)(inw(base) & 0xff); 686 byte_count -= 2; 687 } 688 memset(tty->flip.flag_buf_ptr, 0, count); 689 tty->flip.flag_buf_ptr += count; 690 tty->flip.count += count; 691 692 if (byte_count > 0) { 693 printk(KERN_DEBUG "ISICOM: Intr(0x%x:%d): Flip buffer overflow! dropping bytes...\n", 694 base, channel+1); 695 while(byte_count > 0) { /* drain out unread xtra data */ 696 inw(base); 697 byte_count -= 2; 698 } 699 } 700 queue_task(&tty->flip.tqueue, &tq_timer); 701 } 702 if (card->isa == YES) 703 ClearInterrupt(base); 704 else 705 outw(0x0000, base+0x04); /* enable interrupts */ 706 return; 707} 708 709 /* called with interrupts disabled */ 710static void isicom_config_port(struct isi_port * port) 711{ 712 struct isi_board * card = port->card; 713 struct tty_struct * tty; 714 unsigned long baud; 715 unsigned short channel_setup, wait, base = card->base; 716 unsigned short channel = port->channel, shift_count = card->shift_count; 717 unsigned char flow_ctrl; 718 719 if (!(tty = port->tty) || !tty->termios) 720 return; 721 baud = C_BAUD(tty); 722 if (baud & CBAUDEX) { 723 baud &= ~CBAUDEX; 724 725 /* if CBAUDEX bit is on and the baud is set to either 50 or 75 726 * then the card is programmed for 57.6Kbps or 115Kbps 727 * respectively. 728 */ 729 730 if (baud < 1 || baud > 2) 731 port->tty->termios->c_cflag &= ~CBAUDEX; 732 else 733 baud += 15; 734 } 735 if (baud == 15) { 736 737 /* the ASYNC_SPD_HI and ASYNC_SPD_VHI options are set 738 * by the set_serial_info ioctl ... this is done by 739 * the 'setserial' utility. 740 */ 741 742 if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) 743 baud++; /* 57.6 Kbps */ 744 if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) 745 baud +=2; /* 115 Kbps */ 746 } 747 if (linuxb_to_isib[baud] == -1) { 748 /* hang up */ 749 drop_dtr(port); 750 return; 751 } 752 else 753 raise_dtr(port); 754 755 wait = 100; 756 while (((inw(base + 0x0e) & 0x0001) == 0) && (wait-- > 0)); 757 if (!wait) { 758 printk(KERN_WARNING "ISICOM: Card found busy in isicom_config_port at channel setup.\n"); 759 return; 760 } 761 outw(0x8000 | (channel << shift_count) |0x03, base); 762 outw(linuxb_to_isib[baud] << 8 | 0x03, base); 763 channel_setup = 0; 764 switch(C_CSIZE(tty)) { 765 case CS5: 766 channel_setup |= ISICOM_CS5; 767 break; 768 case CS6: 769 channel_setup |= ISICOM_CS6; 770 break; 771 case CS7: 772 channel_setup |= ISICOM_CS7; 773 break; 774 case CS8: 775 channel_setup |= ISICOM_CS8; 776 break; 777 } 778 779 if (C_CSTOPB(tty)) 780 channel_setup |= ISICOM_2SB; 781 782 if (C_PARENB(tty)) 783 channel_setup |= ISICOM_EVPAR; 784 if (C_PARODD(tty)) 785 channel_setup |= ISICOM_ODPAR; 786 outw(channel_setup, base); 787 InterruptTheCard(base); 788 789 if (C_CLOCAL(tty)) 790 port->flags &= ~ASYNC_CHECK_CD; 791 else 792 port->flags |= ASYNC_CHECK_CD; 793 794 /* flow control settings ...*/ 795 flow_ctrl = 0; 796 port->flags &= ~ASYNC_CTS_FLOW; 797 if (C_CRTSCTS(tty)) { 798 port->flags |= ASYNC_CTS_FLOW; 799 flow_ctrl |= ISICOM_CTSRTS; 800 } 801 if (I_IXON(tty)) 802 flow_ctrl |= ISICOM_RESPOND_XONXOFF; 803 if (I_IXOFF(tty)) 804 flow_ctrl |= ISICOM_INITIATE_XONXOFF; 805 806 wait = 100; 807 while (((inw(base + 0x0e) & 0x0001) == 0) && (wait-- > 0)); 808 if (!wait) { 809 printk(KERN_WARNING "ISICOM: Card found busy in isicom_config_port at flow setup.\n"); 810 return; 811 } 812 outw(0x8000 | (channel << shift_count) |0x04, base); 813 outw(flow_ctrl << 8 | 0x05, base); 814 outw((STOP_CHAR(tty)) << 8 | (START_CHAR(tty)), base); 815 InterruptTheCard(base); 816 817 /* rx enabled -> enable port for rx on the card */ 818 if (C_CREAD(tty)) { 819 card->port_status |= (1 << channel); 820 outw(card->port_status, base + 0x02); 821 } 822 823} 824 825/* open et all */ 826 827static inline void isicom_setup_board(struct isi_board * bp) 828{ 829 int channel; 830 struct isi_port * port; 831 unsigned long flags; 832 833 if (bp->status & BOARD_ACTIVE) 834 return; 835 port = bp->ports; 836#ifdef ISICOM_DEBUG 837 printk(KERN_DEBUG "ISICOM: setup_board: drop_dtr_rts start, port_count %d...\n", bp->port_count); 838#endif 839 for(channel = 0; channel < bp->port_count; channel++, port++) { 840 save_flags(flags); cli(); 841 drop_dtr_rts(port); 842 restore_flags(flags); 843 } 844#ifdef ISICOM_DEBUG 845 printk(KERN_DEBUG "ISICOM: setup_board: drop_dtr_rts stop...\n"); 846#endif 847 848 bp->status |= BOARD_ACTIVE; 849 MOD_INC_USE_COUNT; 850 return; 851} 852 853static int isicom_setup_port(struct isi_port * port) 854{ 855 struct isi_board * card = port->card; 856 unsigned long flags; 857 858 if (port->flags & ASYNC_INITIALIZED) 859 return 0; 860 if (!port->xmit_buf) { 861 unsigned long page; 862 863 if (!(page = get_free_page(GFP_KERNEL))) 864 return -ENOMEM; 865 866 if (port->xmit_buf) { 867 free_page(page); 868 return -ERESTARTSYS; 869 } 870 port->xmit_buf = (unsigned char *) page; 871 } 872 save_flags(flags); cli(); 873 if (port->tty) 874 clear_bit(TTY_IO_ERROR, &port->tty->flags); 875 if (port->count == 1) 876 card->count++; 877 878 port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; 879 880 /* discard any residual data */ 881 kill_queue(port, ISICOM_KILLTX | ISICOM_KILLRX); 882 883 isicom_config_port(port); 884 port->flags |= ASYNC_INITIALIZED; 885 886 restore_flags(flags); 887 888 return 0; 889} 890 891static int block_til_ready(struct tty_struct * tty, struct file * filp, struct isi_port * port) 892{ 893 int do_clocal = 0, retval; 894 DECLARE_WAITQUEUE(wait, current); 895 896 /* block if port is in the process of being closed */ 897 898 if (tty_hung_up_p(filp) || port->flags & ASYNC_CLOSING) { 899#ifdef ISICOM_DEBUG 900 printk(KERN_DEBUG "ISICOM: block_til_ready: close in progress.\n"); 901#endif 902 interruptible_sleep_on(&port->close_wait); 903 if (port->flags & ASYNC_HUP_NOTIFY) 904 return -EAGAIN; 905 else 906 return -ERESTARTSYS; 907 } 908 909 /* trying to open a callout device... check for constraints */ 910 911 if (tty->driver.subtype == SERIAL_TYPE_CALLOUT) { 912#ifdef ISICOM_DEBUG 913 printk(KERN_DEBUG "ISICOM: bl_ti_rdy: callout open.\n"); 914#endif 915 if (port->flags & ASYNC_NORMAL_ACTIVE) 916 return -EBUSY; 917 if ((port->flags & ASYNC_CALLOUT_ACTIVE) && 918 (port->flags & ASYNC_SESSION_LOCKOUT) && 919 (port->session != current->session)) 920 return -EBUSY; 921 922 if ((port->flags & ASYNC_CALLOUT_ACTIVE) && 923 (port->flags & ASYNC_PGRP_LOCKOUT) && 924 (port->pgrp != current->pgrp)) 925 return -EBUSY; 926 port->flags |= ASYNC_CALLOUT_ACTIVE; 927 cli(); 928 raise_dtr_rts(port); 929 sti(); 930 return 0; 931 } 932 933 /* if non-blocking mode is set ... */ 934 935 if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) { 936#ifdef ISICOM_DEBUG 937 printk(KERN_DEBUG "ISICOM: block_til_ready: non-block mode.\n"); 938#endif 939 if (port->flags & ASYNC_CALLOUT_ACTIVE) 940 return -EBUSY; 941 port->flags |= ASYNC_NORMAL_ACTIVE; 942 return 0; 943 } 944 945 if (port->flags & ASYNC_CALLOUT_ACTIVE) { 946 if (port->normal_termios.c_cflag & CLOCAL) 947 do_clocal = 1; 948 } else { 949 if (C_CLOCAL(tty)) 950 do_clocal = 1; 951 } 952#ifdef ISICOM_DEBUG 953 if (do_clocal) 954 printk(KERN_DEBUG "ISICOM: block_til_ready: CLOCAL set.\n"); 955#endif 956 957 /* block waiting for DCD to be asserted, and while 958 callout dev is busy */ 959 retval = 0; 960 add_wait_queue(&port->open_wait, &wait); 961 cli(); 962 if (!tty_hung_up_p(filp)) 963 port->count--; 964 sti(); 965 port->blocked_open++; 966#ifdef ISICOM_DEBUG 967 printk(KERN_DEBUG "ISICOM: block_til_ready: waiting for DCD...\n"); 968#endif 969 while (1) { 970 cli(); 971 if (!(port->flags & ASYNC_CALLOUT_ACTIVE)) 972 raise_dtr_rts(port); 973 974 sti(); 975 set_current_state(TASK_INTERRUPTIBLE); 976 if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)) { 977 if (port->flags & ASYNC_HUP_NOTIFY) 978 retval = -EAGAIN; 979 else 980 retval = -ERESTARTSYS; 981#ifdef ISICOM_DEBUG 982 printk(KERN_DEBUG "ISICOM: block_til_ready: tty_hung_up_p || not init.\n"); 983#endif 984 break; 985 } 986 if (!(port->flags & ASYNC_CALLOUT_ACTIVE) && 987 !(port->flags & ASYNC_CLOSING) && 988 (do_clocal || (port->status & ISI_DCD))) { 989#ifdef ISICOM_DEBUG 990 printk(KERN_DEBUG "ISICOM: block_til_ready: do_clocal || DCD.\n"); 991#endif 992 break; 993 } 994 if (signal_pending(current)) { 995#ifdef ISICOM_DEBUG 996 printk(KERN_DEBUG "ISICOM: block_til_ready: sig blocked.\n"); 997#endif 998 retval = -ERESTARTSYS; 999 break; 1000 } 1001 schedule(); 1002 } 1003 set_current_state(TASK_RUNNING); 1004 remove_wait_queue(&port->open_wait, &wait); 1005 if (!tty_hung_up_p(filp)) 1006 port->count++; 1007 port->blocked_open--; 1008 if (retval) 1009 return retval; 1010 port->flags |= ASYNC_NORMAL_ACTIVE; 1011 return 0; 1012} 1013 1014static int isicom_open(struct tty_struct * tty, struct file * filp) 1015{ 1016 struct isi_port * port; 1017 struct isi_board * card; 1018 unsigned int line, board; 1019 unsigned long flags; 1020 int error; 1021 1022#ifdef ISICOM_DEBUG 1023 printk(KERN_DEBUG "ISICOM: open start!!!.\n"); 1024#endif 1025 line = MINOR(tty->device) - tty->driver.minor_start; 1026 1027#ifdef ISICOM_DEBUG 1028 printk(KERN_DEBUG "line = %d.\n", line); 1029#endif 1030 1031 if ((line < 0) || (line > (PORT_COUNT-1))) 1032 return -ENODEV; 1033 board = BOARD(line); 1034 1035#ifdef ISICOM_DEBUG 1036 printk(KERN_DEBUG "board = %d.\n", board); 1037#endif 1038 1039 card = &isi_card[board]; 1040 if (!(card->status & FIRMWARE_LOADED)) { 1041#ifdef ISICOM_DEBUG 1042 printk(KERN_DEBUG"ISICOM: Firmware not loaded to card%d.\n", board); 1043#endif 1044 return -ENODEV; 1045 } 1046 1047 /* open on a port greater than the port count for the card !!! */ 1048 if (line > ((board * 16) + card->port_count - 1)) { 1049 printk(KERN_ERR "ISICOM: Open on a port which exceeds the port_count of the card!\n"); 1050 return -ENODEV; 1051 } 1052 port = &isi_ports[line]; 1053 if (isicom_paranoia_check(port, tty->device, "isicom_open")) 1054 return -ENODEV; 1055 1056#ifdef ISICOM_DEBUG 1057 printk(KERN_DEBUG "ISICOM: isicom_setup_board ...\n"); 1058#endif 1059 isicom_setup_board(card); 1060 1061 port->count++; 1062 tty->driver_data = port; 1063 port->tty = tty; 1064#ifdef ISICOM_DEBUG 1065 printk(KERN_DEBUG "ISICOM: isicom_setup_port ...\n"); 1066#endif 1067 if ((error = isicom_setup_port(port))!=0) 1068 return error; 1069#ifdef ISICOM_DEBUG 1070 printk(KERN_DEBUG "ISICOM: block_til_ready ...\n"); 1071#endif 1072 if ((error = block_til_ready(tty, filp, port))!=0) 1073 return error; 1074 1075 if ((port->count == 1) && (port->flags & ASYNC_SPLIT_TERMIOS)) { 1076 if (tty->driver.subtype == SERIAL_TYPE_NORMAL) 1077 *tty->termios = port->normal_termios; 1078 else 1079 *tty->termios = port->callout_termios; 1080 save_flags(flags); cli(); 1081 isicom_config_port(port); 1082 restore_flags(flags); 1083 } 1084 1085 port->session = current->session; 1086 port->pgrp = current->pgrp; 1087#ifdef ISICOM_DEBUG 1088 printk(KERN_DEBUG "ISICOM: open end!!!.\n"); 1089#endif 1090 return 0; 1091} 1092 1093/* close et all */ 1094 1095static inline void isicom_shutdown_board(struct isi_board * bp) 1096{ 1097 int channel; 1098 struct isi_port * port; 1099 1100 if (!(bp->status & BOARD_ACTIVE)) 1101 return; 1102 bp->status &= ~BOARD_ACTIVE; 1103 port = bp->ports; 1104 for(channel = 0; channel < bp->port_count; channel++, port++) { 1105 drop_dtr_rts(port); 1106 } 1107 MOD_DEC_USE_COUNT; 1108} 1109 1110static void isicom_shutdown_port(struct isi_port * port) 1111{ 1112 struct isi_board * card = port->card; 1113 struct tty_struct * tty; 1114 1115 if (!(port->flags & ASYNC_INITIALIZED)) 1116 return; 1117 if (port->xmit_buf) { 1118 free_page((unsigned long) port->xmit_buf); 1119 port->xmit_buf = NULL; 1120 } 1121 if (!(tty = port->tty) || C_HUPCL(tty)) 1122 /* drop dtr on this port */ 1123 drop_dtr(port); 1124 1125 /* any other port uninits */ 1126 1127 if (tty) 1128 set_bit(TTY_IO_ERROR, &tty->flags); 1129 port->flags &= ~ASYNC_INITIALIZED; 1130 1131 if (--card->count < 0) { 1132 printk(KERN_DEBUG "ISICOM: isicom_shutdown_port: bad board(0x%x) count %d.\n", 1133 card->base, card->count); 1134 card->count = 0; 1135 } 1136 1137 /* last port was closed , shutdown that boad too */ 1138 if (!card->count) 1139 isicom_shutdown_board(card); 1140} 1141 1142static void isicom_close(struct tty_struct * tty, struct file * filp) 1143{ 1144 struct isi_port * port = (struct isi_port *) tty->driver_data; 1145 struct isi_board * card = port->card; 1146 unsigned long flags; 1147 1148 if (!port) 1149 return; 1150 if (isicom_paranoia_check(port, tty->device, "isicom_close")) 1151 return; 1152 1153#ifdef ISICOM_DEBUG 1154 printk(KERN_DEBUG "ISICOM: Close start!!!.\n"); 1155#endif 1156 1157 save_flags(flags); cli(); 1158 if (tty_hung_up_p(filp)) { 1159 restore_flags(flags); 1160 return; 1161 } 1162 1163 if ((tty->count == 1) && (port->count != 1)) { 1164 printk(KERN_WARNING "ISICOM:(0x%x) isicom_close: bad port count" 1165 "tty->count = 1 port count = %d.\n", 1166 card->base, port->count); 1167 port->count = 1; 1168 } 1169 if (--port->count < 0) { 1170 printk(KERN_WARNING "ISICOM:(0x%x) isicom_close: bad port count for" 1171 "channel%d = %d", card->base, port->channel, 1172 port->count); 1173 port->count = 0; 1174 } 1175 1176 if (port->count) { 1177 restore_flags(flags); 1178 return; 1179 } 1180 port->flags |= ASYNC_CLOSING; 1181 /* 1182 * save termios struct since callout and dialin termios may be 1183 * different. 1184 */ 1185 if (port->flags & ASYNC_NORMAL_ACTIVE) 1186 port->normal_termios = *tty->termios; 1187 if (port->flags & ASYNC_CALLOUT_ACTIVE) 1188 port->callout_termios = *tty->termios; 1189 1190 tty->closing = 1; 1191 if (port->closing_wait != ASYNC_CLOSING_WAIT_NONE) 1192 tty_wait_until_sent(tty, port->closing_wait); 1193 /* indicate to the card that no more data can be received 1194 on this port */ 1195 if (port->flags & ASYNC_INITIALIZED) { 1196 card->port_status &= ~(1 << port->channel); 1197 outw(card->port_status, card->base + 0x02); 1198 } 1199 isicom_shutdown_port(port); 1200 if (tty->driver.flush_buffer) 1201 tty->driver.flush_buffer(tty); 1202 if (tty->ldisc.flush_buffer) 1203 tty->ldisc.flush_buffer(tty); 1204 tty->closing = 0; 1205 port->tty = 0; 1206 if (port->blocked_open) { 1207 if (port->close_delay) { 1208 set_current_state(TASK_INTERRUPTIBLE); 1209#ifdef ISICOM_DEBUG 1210 printk(KERN_DEBUG "ISICOM: scheduling until time out.\n"); 1211#endif 1212 schedule_timeout(port->close_delay); 1213 } 1214 wake_up_interruptible(&port->open_wait); 1215 } 1216 port->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CALLOUT_ACTIVE | 1217 ASYNC_CLOSING); 1218 wake_up_interruptible(&port->close_wait); 1219 restore_flags(flags); 1220#ifdef ISICOM_DEBUG 1221 printk(KERN_DEBUG "ISICOM: Close end!!!.\n"); 1222#endif 1223} 1224 1225/* write et all */ 1226static int isicom_write(struct tty_struct * tty, int from_user, 1227 const unsigned char * buf, int count) 1228{ 1229 struct isi_port * port = (struct isi_port *) tty->driver_data; 1230 unsigned long flags; 1231 int cnt, total = 0; 1232#ifdef ISICOM_DEBUG 1233 printk(KERN_DEBUG "ISICOM: isicom_write for port%d: %d bytes.\n", 1234 port->channel+1, count); 1235#endif 1236 if (isicom_paranoia_check(port, tty->device, "isicom_write")) 1237 return 0; 1238 1239 if (!tty || !port->xmit_buf || !tmp_buf) 1240 return 0; 1241 if (from_user) 1242 down(&tmp_buf_sem); /* acquire xclusive access to tmp_buf */ 1243 1244 save_flags(flags); 1245 while(1) { 1246 cli(); 1247 cnt = MIN(count, MIN(SERIAL_XMIT_SIZE - port->xmit_cnt - 1, 1248 SERIAL_XMIT_SIZE - port->xmit_head)); 1249 if (cnt <= 0) 1250 break; 1251 1252 if (from_user) { 1253 /* the following may block for paging... hence 1254 enabling interrupts but tx routine may have 1255 created more space in xmit_buf when the ctrl 1256 gets back here */ 1257 sti(); 1258 copy_from_user(tmp_buf, buf, cnt); 1259 cli(); 1260 cnt = MIN(cnt, MIN(SERIAL_XMIT_SIZE - port->xmit_cnt - 1, 1261 SERIAL_XMIT_SIZE - port->xmit_head)); 1262 memcpy(port->xmit_buf + port->xmit_head, tmp_buf, cnt); 1263 } 1264 else 1265 memcpy(port->xmit_buf + port->xmit_head, buf, cnt); 1266 port->xmit_head = (port->xmit_head + cnt) & (SERIAL_XMIT_SIZE - 1); 1267 port->xmit_cnt += cnt; 1268 restore_flags(flags); 1269 buf += cnt; 1270 count -= cnt; 1271 total += cnt; 1272 } 1273 if (from_user) 1274 up(&tmp_buf_sem); 1275 if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped) 1276 port->status |= ISI_TXOK; 1277 restore_flags(flags); 1278#ifdef ISICOM_DEBUG 1279 printk(KERN_DEBUG "ISICOM: isicom_write %d bytes written.\n", total); 1280#endif 1281 return total; 1282} 1283 1284/* put_char et all */ 1285static void isicom_put_char(struct tty_struct * tty, unsigned char ch) 1286{ 1287 struct isi_port * port = (struct isi_port *) tty->driver_data; 1288 unsigned long flags; 1289 1290 if (isicom_paranoia_check(port, tty->device, "isicom_put_char")) 1291 return; 1292 1293 if (!tty || !port->xmit_buf) 1294 return; 1295#ifdef ISICOM_DEBUG 1296 printk(KERN_DEBUG "ISICOM: put_char, port %d, char %c.\n", port->channel+1, ch); 1297#endif 1298 1299 save_flags(flags); cli(); 1300 1301 if (port->xmit_cnt >= (SERIAL_XMIT_SIZE - 1)) { 1302 restore_flags(flags); 1303 return; 1304 } 1305 1306 port->xmit_buf[port->xmit_head++] = ch; 1307 port->xmit_head &= (SERIAL_XMIT_SIZE - 1); 1308 port->xmit_cnt++; 1309 restore_flags(flags); 1310} 1311 1312/* flush_chars et all */ 1313static void isicom_flush_chars(struct tty_struct * tty) 1314{ 1315 struct isi_port * port = (struct isi_port *) tty->driver_data; 1316 1317 if (isicom_paranoia_check(port, tty->device, "isicom_flush_chars")) 1318 return; 1319 1320 if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || 1321 !port->xmit_buf) 1322 return; 1323 1324 /* this tells the transmitter to consider this port for 1325 data output to the card ... that's the best we can do. */ 1326 port->status |= ISI_TXOK; 1327} 1328 1329/* write_room et all */ 1330static int isicom_write_room(struct tty_struct * tty) 1331{ 1332 struct isi_port * port = (struct isi_port *) tty->driver_data; 1333 int free; 1334 if (isicom_paranoia_check(port, tty->device, "isicom_write_room")) 1335 return 0; 1336 1337 free = SERIAL_XMIT_SIZE - port->xmit_cnt - 1; 1338 if (free < 0) 1339 free = 0; 1340 return free; 1341} 1342 1343/* chars_in_buffer et all */ 1344static int isicom_chars_in_buffer(struct tty_struct * tty) 1345{ 1346 struct isi_port * port = (struct isi_port *) tty->driver_data; 1347 if (isicom_paranoia_check(port, tty->device, "isicom_chars_in_buffer")) 1348 return 0; 1349 return port->xmit_cnt; 1350} 1351 1352/* ioctl et all */ 1353static inline void isicom_send_break(struct isi_port * port, unsigned long length) 1354{ 1355 struct isi_board * card = port->card; 1356 short wait = 10; 1357 unsigned short base = card->base; 1358 unsigned long flags; 1359 1360 save_flags(flags); cli(); 1361 while (((inw(base + 0x0e) & 0x0001) == 0) && (wait-- > 0)); 1362 if (!wait) { 1363 printk(KERN_DEBUG "ISICOM: Card found busy in isicom_send_break.\n"); 1364 goto out; 1365 } 1366 outw(0x8000 | ((port->channel) << (card->shift_count)) | 0x3, base); 1367 outw((length & 0xff) << 8 | 0x00, base); 1368 outw((length & 0xff00), base); 1369 InterruptTheCard(base); 1370out: restore_flags(flags); 1371} 1372 1373static int isicom_get_modem_info(struct isi_port * port, unsigned int * value) 1374{ 1375 /* just send the port status */ 1376 unsigned int info; 1377 unsigned short status = port->status; 1378 1379 info = ((status & ISI_RTS) ? TIOCM_RTS : 0) | 1380 ((status & ISI_DTR) ? TIOCM_DTR : 0) | 1381 ((status & ISI_DCD) ? TIOCM_CAR : 0) | 1382 ((status & ISI_DSR) ? TIOCM_DSR : 0) | 1383 ((status & ISI_CTS) ? TIOCM_CTS : 0) | 1384 ((status & ISI_RI ) ? TIOCM_RI : 0); 1385 return put_user(info, (unsigned int *) value); 1386} 1387 1388static int isicom_set_modem_info(struct isi_port * port, unsigned int cmd, 1389 unsigned int * value) 1390{ 1391 unsigned int arg; 1392 unsigned long flags; 1393 1394 if(get_user(arg, value)) 1395 return -EFAULT; 1396 1397 save_flags(flags); cli(); 1398 1399 switch(cmd) { 1400 case TIOCMBIS: 1401 if (arg & TIOCM_RTS) 1402 raise_rts(port); 1403 if (arg & TIOCM_DTR) 1404 raise_dtr(port); 1405 break; 1406 1407 case TIOCMBIC: 1408 if (arg & TIOCM_RTS) 1409 drop_rts(port); 1410 if (arg & TIOCM_DTR) 1411 drop_dtr(port); 1412 break; 1413 1414 case TIOCMSET: 1415 if (arg & TIOCM_RTS) 1416 raise_rts(port); 1417 else 1418 drop_rts(port); 1419 1420 if (arg & TIOCM_DTR) 1421 raise_dtr(port); 1422 else 1423 drop_dtr(port); 1424 break; 1425 1426 default: 1427 restore_flags(flags); 1428 return -EINVAL; 1429 } 1430 restore_flags(flags); 1431 return 0; 1432} 1433 1434static int isicom_set_serial_info(struct isi_port * port, 1435 struct serial_struct * info) 1436{ 1437 struct serial_struct newinfo; 1438 unsigned long flags; 1439 int reconfig_port; 1440 1441 if(copy_from_user(&newinfo, info, sizeof(newinfo))) 1442 return -EFAULT; 1443 1444 reconfig_port = ((port->flags & ASYNC_SPD_MASK) != 1445 (newinfo.flags & ASYNC_SPD_MASK)); 1446 1447 if (!capable(CAP_SYS_ADMIN)) { 1448 if ((newinfo.close_delay != port->close_delay) || 1449 (newinfo.closing_wait != port->closing_wait) || 1450 ((newinfo.flags & ~ASYNC_USR_MASK) != 1451 (port->flags & ~ASYNC_USR_MASK))) 1452 return -EPERM; 1453 port->flags = ((port->flags & ~ ASYNC_USR_MASK) | 1454 (newinfo.flags & ASYNC_USR_MASK)); 1455 } 1456 else { 1457 port->close_delay = newinfo.close_delay; 1458 port->closing_wait = newinfo.closing_wait; 1459 port->flags = ((port->flags & ~ASYNC_FLAGS) | 1460 (newinfo.flags & ASYNC_FLAGS)); 1461 } 1462 if (reconfig_port) { 1463 save_flags(flags); cli(); 1464 isicom_config_port(port); 1465 restore_flags(flags); 1466 } 1467 return 0; 1468} 1469 1470static int isicom_get_serial_info(struct isi_port * port, 1471 struct serial_struct * info) 1472{ 1473 struct serial_struct out_info; 1474 1475 memset(&out_info, 0, sizeof(out_info)); 1476/* out_info.type = ? */ 1477 out_info.line = port - isi_ports; 1478 out_info.port = port->card->base; 1479 out_info.irq = port->card->irq; 1480 out_info.flags = port->flags; 1481/* out_info.baud_base = ? */ 1482 out_info.close_delay = port->close_delay; 1483 out_info.closing_wait = port->closing_wait; 1484 if(copy_to_user(info, &out_info, sizeof(out_info))) 1485 return -EFAULT; 1486 return 0; 1487} 1488 1489static int isicom_ioctl(struct tty_struct * tty, struct file * filp, 1490 unsigned int cmd, unsigned long arg) 1491{ 1492 struct isi_port * port = (struct isi_port *) tty->driver_data; 1493 int retval; 1494 1495 if (isicom_paranoia_check(port, tty->device, "isicom_ioctl")) 1496 return -ENODEV; 1497 1498 switch(cmd) { 1499 case TCSBRK: 1500 retval = tty_check_change(tty); 1501 if (retval) 1502 return retval; 1503 tty_wait_until_sent(tty, 0); 1504 if (!arg) 1505 isicom_send_break(port, HZ/4); 1506 return 0; 1507 1508 case TCSBRKP: 1509 retval = tty_check_change(tty); 1510 if (retval) 1511 return retval; 1512 tty_wait_until_sent(tty, 0); 1513 isicom_send_break(port, arg ? arg * (HZ/10) : HZ/4); 1514 return 0; 1515 1516 case TIOCGSOFTCAR: 1517 return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long *) arg); 1518 1519 case TIOCSSOFTCAR: 1520 if(get_user(arg, (unsigned long *) arg)) 1521 return -EFAULT; 1522 tty->termios->c_cflag = 1523 ((tty->termios->c_cflag & ~CLOCAL) | 1524 (arg ? CLOCAL : 0)); 1525 return 0; 1526 1527 case TIOCMGET: 1528 return isicom_get_modem_info(port, (unsigned int*) arg); 1529 1530 case TIOCMBIS: 1531 case TIOCMBIC: 1532 case TIOCMSET: 1533 return isicom_set_modem_info(port, cmd, 1534 (unsigned int *) arg); 1535 1536 case TIOCGSERIAL: 1537 return isicom_get_serial_info(port, 1538 (struct serial_struct *) arg); 1539 1540 case TIOCSSERIAL: 1541 return isicom_set_serial_info(port, 1542 (struct serial_struct *) arg); 1543 1544 default: 1545 return -ENOIOCTLCMD; 1546 } 1547 return 0; 1548} 1549 1550/* set_termios et all */ 1551static void isicom_set_termios(struct tty_struct * tty, struct termios * old_termios) 1552{ 1553 struct isi_port * port = (struct isi_port *) tty->driver_data; 1554 unsigned long flags; 1555 1556 if (isicom_paranoia_check(port, tty->device, "isicom_set_termios")) 1557 return; 1558 1559 if (tty->termios->c_cflag == old_termios->c_cflag && 1560 tty->termios->c_iflag == old_termios->c_iflag) 1561 return; 1562 1563 save_flags(flags); cli(); 1564 isicom_config_port(port); 1565 restore_flags(flags); 1566 1567 if ((old_termios->c_cflag & CRTSCTS) && 1568 !(tty->termios->c_cflag & CRTSCTS)) { 1569 tty->hw_stopped = 0; 1570 isicom_start(tty); 1571 } 1572} 1573 1574/* throttle et all */ 1575static void isicom_throttle(struct tty_struct * tty) 1576{ 1577 struct isi_port * port = (struct isi_port *) tty->driver_data; 1578 struct isi_board * card = port->card; 1579 unsigned long flags; 1580 1581 if (isicom_paranoia_check(port, tty->device, "isicom_throttle")) 1582 return; 1583 1584 /* tell the card that this port cannot handle any more data for now */ 1585 save_flags(flags); cli(); 1586 card->port_status &= ~(1 << port->channel); 1587 outw(card->port_status, card->base + 0x02); 1588 restore_flags(flags); 1589} 1590 1591/* unthrottle et all */ 1592static void isicom_unthrottle(struct tty_struct * tty) 1593{ 1594 struct isi_port * port = (struct isi_port *) tty->driver_data; 1595 struct isi_board * card = port->card; 1596 unsigned long flags; 1597 1598 if (isicom_paranoia_check(port, tty->device, "isicom_unthrottle")) 1599 return; 1600 1601 /* tell the card that this port is ready to accept more data */ 1602 save_flags(flags); cli(); 1603 card->port_status |= (1 << port->channel); 1604 outw(card->port_status, card->base + 0x02); 1605 restore_flags(flags); 1606} 1607 1608/* stop et all */ 1609static void isicom_stop(struct tty_struct * tty) 1610{ 1611 struct isi_port * port = (struct isi_port *) tty->driver_data; 1612 1613 if (isicom_paranoia_check(port, tty->device, "isicom_stop")) 1614 return; 1615 1616 /* this tells the transmitter not to consider this port for 1617 data output to the card. */ 1618 port->status &= ~ISI_TXOK; 1619} 1620 1621/* start et all */ 1622static void isicom_start(struct tty_struct * tty) 1623{ 1624 struct isi_port * port = (struct isi_port *) tty->driver_data; 1625 1626 if (isicom_paranoia_check(port, tty->device, "isicom_start")) 1627 return; 1628 1629 /* this tells the transmitter to consider this port for 1630 data output to the card. */ 1631 port->status |= ISI_TXOK; 1632} 1633 1634/* hangup et all */ 1635static void do_isicom_hangup(void * data) 1636{ 1637 struct isi_port * port = (struct isi_port *) data; 1638 struct tty_struct * tty; 1639 1640 tty = port->tty; 1641 if (tty) 1642 tty_hangup(tty); 1643 MOD_DEC_USE_COUNT; 1644} 1645 1646static void isicom_hangup(struct tty_struct * tty) 1647{ 1648 struct isi_port * port = (struct isi_port *) tty->driver_data; 1649 1650 if (isicom_paranoia_check(port, tty->device, "isicom_hangup")) 1651 return; 1652 1653 isicom_shutdown_port(port); 1654 port->count = 0; 1655 port->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CALLOUT_ACTIVE); 1656 port->tty = 0; 1657 wake_up_interruptible(&port->open_wait); 1658} 1659 1660/* flush_buffer et all */ 1661static void isicom_flush_buffer(struct tty_struct * tty) 1662{ 1663 struct isi_port * port = (struct isi_port *) tty->driver_data; 1664 unsigned long flags; 1665 1666 if (isicom_paranoia_check(port, tty->device, "isicom_flush_buffer")) 1667 return; 1668 1669 save_flags(flags); cli(); 1670 port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; 1671 restore_flags(flags); 1672 1673 wake_up_interruptible(&tty->write_wait); 1674 if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && 1675 tty->ldisc.write_wakeup) 1676 (tty->ldisc.write_wakeup)(tty); 1677} 1678 1679 1680static int register_ioregion(void) 1681{ 1682 int count, done=0; 1683 for (count=0; count < BOARD_COUNT; count++ ) { 1684 if (isi_card[count].base) { 1685 if (check_region(isi_card[count].base,16)) { 1686 printk(KERN_DEBUG "ISICOM: I/O Region 0x%x-0x%x is busy. Card%d will be disabled.\n", 1687 isi_card[count].base,isi_card[count].base+15,count+1); 1688 isi_card[count].base=0; 1689 } 1690 else { 1691 request_region(isi_card[count].base,16,ISICOM_NAME); 1692#ifdef ISICOM_DEBUG 1693 printk(KERN_DEBUG "ISICOM: I/O Region 0x%x-0x%x requested for Card%d.\n",isi_card[count].base,isi_card[count].base+15,count+1); 1694#endif 1695 done++; 1696 } 1697 } 1698 } 1699 return done; 1700} 1701 1702static void unregister_ioregion(void) 1703{ 1704 int count; 1705 for (count=0; count < BOARD_COUNT; count++ ) 1706 if (isi_card[count].base) { 1707 release_region(isi_card[count].base,16); 1708#ifdef ISICOM_DEBUG 1709 printk(KERN_DEBUG "ISICOM: I/O Region 0x%x-0x%x released for Card%d.\n",isi_card[count].base,isi_card[count].base+15,count+1); 1710#endif 1711 } 1712} 1713 1714static int register_drivers(void) 1715{ 1716 int error; 1717 1718 /* tty driver structure initialization */ 1719 memset(&isicom_normal, 0, sizeof(struct tty_driver)); 1720 isicom_normal.magic = TTY_DRIVER_MAGIC; 1721 isicom_normal.name = "ttyM"; 1722 isicom_normal.major = ISICOM_NMAJOR; 1723 isicom_normal.minor_start = 0; 1724 isicom_normal.num = PORT_COUNT; 1725 isicom_normal.type = TTY_DRIVER_TYPE_SERIAL; 1726 isicom_normal.subtype = SERIAL_TYPE_NORMAL; 1727 isicom_normal.init_termios = tty_std_termios; 1728 isicom_normal.init_termios.c_cflag = 1729 B9600 | CS8 | CREAD | HUPCL |CLOCAL; 1730 isicom_normal.flags = TTY_DRIVER_REAL_RAW; 1731 isicom_normal.refcount = &isicom_refcount; 1732 1733 isicom_normal.table = isicom_table; 1734 isicom_normal.termios = isicom_termios; 1735 isicom_normal.termios_locked = isicom_termios_locked; 1736 1737 isicom_normal.open = isicom_open; 1738 isicom_normal.close = isicom_close; 1739 isicom_normal.write = isicom_write; 1740 isicom_normal.put_char = isicom_put_char; 1741 isicom_normal.flush_chars = isicom_flush_chars; 1742 isicom_normal.write_room = isicom_write_room; 1743 isicom_normal.chars_in_buffer = isicom_chars_in_buffer; 1744 isicom_normal.ioctl = isicom_ioctl; 1745 isicom_normal.set_termios = isicom_set_termios; 1746 isicom_normal.throttle = isicom_throttle; 1747 isicom_normal.unthrottle = isicom_unthrottle; 1748 isicom_normal.stop = isicom_stop; 1749 isicom_normal.start = isicom_start; 1750 isicom_normal.hangup = isicom_hangup; 1751 isicom_normal.flush_buffer = isicom_flush_buffer; 1752 1753 /* callout device */ 1754 1755 isicom_callout = isicom_normal; 1756 isicom_callout.name = "cum"; 1757 isicom_callout.major = ISICOM_CMAJOR; 1758 isicom_callout.subtype = SERIAL_TYPE_CALLOUT; 1759 1760 if ((error=tty_register_driver(&isicom_normal))!=0) { 1761 printk(KERN_DEBUG "ISICOM: Couldn't register the dialin driver, error=%d\n", 1762 error); 1763 return error; 1764 } 1765 if ((error=tty_register_driver(&isicom_callout))!=0) { 1766 tty_unregister_driver(&isicom_normal); 1767 printk(KERN_DEBUG "ISICOM: Couldn't register the callout driver, error=%d\n", 1768 error); 1769 return error; 1770 } 1771 return 0; 1772} 1773 1774static void unregister_drivers(void) 1775{ 1776 int error; 1777 if ((error=tty_unregister_driver(&isicom_callout))!=0) 1778 printk(KERN_DEBUG "ISICOM: couldn't unregister callout driver error=%d.\n",error); 1779 if (tty_unregister_driver(&isicom_normal)) 1780 printk(KERN_DEBUG "ISICOM: couldn't unregister normal driver error=%d.\n",error); 1781} 1782 1783static int register_isr(void) 1784{ 1785 int count, done=0, card; 1786 int flag; 1787 unsigned char request; 1788 for (count=0; count < BOARD_COUNT; count++ ) { 1789 if (isi_card[count].base) { 1790 /* 1791 * verify if the required irq has already been requested for 1792 * another ISI Card, if so we already have it, else request it 1793 */ 1794 request = YES; 1795 for(card = 0; card < count; card++) 1796 if ((isi_card[card].base) && (isi_card[card].irq == isi_card[count].irq)) { 1797 request = NO; 1798 if ((isi_card[count].isa == NO) && (isi_card[card].isa == NO)) 1799 break; 1800 /* 1801 * ISA cards cannot share interrupts with other 1802 * PCI or ISA devices hence disable this card. 1803 */ 1804 release_region(isi_card[count].base,16); 1805 isi_card[count].base = 0; 1806 break; 1807 } 1808 flag=0; 1809 if(isi_card[count].isa == NO) 1810 flag |= SA_SHIRQ; 1811 1812 if (request == YES) { 1813 if (request_irq(isi_card[count].irq, isicom_interrupt, SA_INTERRUPT|flag, ISICOM_NAME, NULL)) { 1814 printk(KERN_WARNING "ISICOM: Could not install handler at Irq %d. Card%d will be disabled.\n", 1815 isi_card[count].irq, count+1); 1816 release_region(isi_card[count].base,16); 1817 isi_card[count].base=0; 1818 } 1819 else { 1820 printk(KERN_INFO "ISICOM: Card%d at 0x%x using irq %d.\n", 1821 count+1, isi_card[count].base, isi_card[count].irq); 1822 1823 irq_to_board[isi_card[count].irq]=&isi_card[count]; 1824 done++; 1825 } 1826 } 1827 } 1828 } 1829 return done; 1830} 1831 1832static void unregister_isr(void) 1833{ 1834 int count, card; 1835 unsigned char freeirq; 1836 for (count=0; count < BOARD_COUNT; count++ ) { 1837 if (isi_card[count].base) { 1838 freeirq = YES; 1839 for(card = 0; card < count; card++) 1840 if ((isi_card[card].base) && (isi_card[card].irq == isi_card[count].irq)) { 1841 freeirq = NO; 1842 break; 1843 } 1844 if (freeirq == YES) { 1845 free_irq(isi_card[count].irq, NULL); 1846#ifdef ISICOM_DEBUG 1847 printk(KERN_DEBUG "ISICOM: Irq %d released for Card%d.\n",isi_card[count].irq, count+1); 1848#endif 1849 } 1850 } 1851 } 1852} 1853 1854static int isicom_init(void) 1855{ 1856 int card, channel, base; 1857 struct isi_port * port; 1858 unsigned long page; 1859 1860 if (!tmp_buf) { 1861 page = get_free_page(GFP_KERNEL); 1862 if (!page) { 1863#ifdef ISICOM_DEBUG 1864 printk(KERN_DEBUG "ISICOM: Couldn't allocate page for tmp_buf.\n"); 1865#else 1866 printk(KERN_ERR "ISICOM: Not enough memory...\n"); 1867#endif 1868 return 0; 1869 } 1870 tmp_buf = (unsigned char *) page; 1871 } 1872 1873 if (!register_ioregion()) 1874 { 1875 printk(KERN_ERR "ISICOM: All required I/O space found busy.\n"); 1876 free_page((unsigned long)tmp_buf); 1877 return 0; 1878 } 1879 if (register_drivers()) 1880 { 1881 unregister_ioregion(); 1882 free_page((unsigned long)tmp_buf); 1883 return 0; 1884 } 1885 if (!register_isr()) 1886 { 1887 unregister_drivers(); 1888 /* ioports already uregistered in register_isr */ 1889 free_page((unsigned long)tmp_buf); 1890 return 0; 1891 } 1892 1893 /* initialize bottom half */ 1894 init_bh(ISICOM_BH, do_isicom_bh); 1895 1896 1897 memset(isi_ports, 0, sizeof(isi_ports)); 1898 for (card = 0; card < BOARD_COUNT; card++) { 1899 port = &isi_ports[card * 16]; 1900 isi_card[card].ports = port; 1901 base = isi_card[card].base; 1902 for (channel = 0; channel < 16; channel++, port++) { 1903 port->magic = ISICOM_MAGIC; 1904 port->card = &isi_card[card]; 1905 port->channel = channel; 1906 port->normal_termios = isicom_normal.init_termios; 1907 port->callout_termios = isicom_callout.init_termios; 1908 port->close_delay = 50 * HZ/100; 1909 port->closing_wait = 3000 * HZ/100; 1910 port->hangup_tq.routine = do_isicom_hangup; 1911 port->hangup_tq.data = port; 1912 port->bh_tqueue.routine = isicom_bottomhalf; 1913 port->bh_tqueue.data = port; 1914 port->status = 0; 1915 init_waitqueue_head(&port->open_wait); 1916 init_waitqueue_head(&port->close_wait); 1917 /* . . . */ 1918 } 1919 } 1920 1921 return 1; 1922} 1923 1924/* 1925 * Insmod can set static symbols so keep these static 1926 */ 1927 1928static int io[4]; 1929static int irq[4]; 1930 1931MODULE_AUTHOR("MultiTech"); 1932MODULE_DESCRIPTION("Driver for the ISI series of cards by MultiTech"); 1933MODULE_LICENSE("GPL"); 1934MODULE_PARM(io, "1-4i"); 1935MODULE_PARM_DESC(io, "I/O ports for the cards"); 1936MODULE_PARM(irq, "1-4i"); 1937MODULE_PARM_DESC(irq, "Interrupts for the cards"); 1938 1939int init_module(void) 1940{ 1941 struct pci_dev *dev = NULL; 1942 int retval, card, idx, count; 1943 unsigned char pciirq; 1944 unsigned int ioaddr; 1945 1946 card = 0; 1947 for(idx=0; idx < BOARD_COUNT; idx++) { 1948 if (io[idx]) { 1949 isi_card[idx].base=io[idx]; 1950 isi_card[idx].irq=irq[idx]; 1951 isi_card[idx].isa=YES; 1952 card++; 1953 } 1954 else { 1955 isi_card[idx].base = 0; 1956 isi_card[idx].irq = 0; 1957 } 1958 } 1959 1960 for (idx=0 ;idx < card; idx++) { 1961 if (!((isi_card[idx].irq==2)||(isi_card[idx].irq==3)|| 1962 (isi_card[idx].irq==4)||(isi_card[idx].irq==5)|| 1963 (isi_card[idx].irq==7)||(isi_card[idx].irq==10)|| 1964 (isi_card[idx].irq==11)||(isi_card[idx].irq==12)|| 1965 (isi_card[idx].irq==15))) { 1966 1967 if (isi_card[idx].base) { 1968 printk(KERN_ERR "ISICOM: Irq %d unsupported. Disabling Card%d...\n", 1969 isi_card[idx].irq, idx+1); 1970 isi_card[idx].base=0; 1971 card--; 1972 } 1973 } 1974 } 1975 1976 if (pci_present() && (card < BOARD_COUNT)) { 1977 for (idx=0; idx < DEVID_COUNT; idx++) { 1978 dev = NULL; 1979 for (;;){ 1980 if (!(dev = pci_find_device(VENDOR_ID, isicom_pci_tbl[idx].device, dev))) 1981 break; 1982 if (card >= BOARD_COUNT) 1983 break; 1984 1985 if (pci_enable_device(dev)) 1986 break; 1987 1988 /* found a PCI ISI card! */ 1989 ioaddr = pci_resource_start (dev, 3); /* i.e at offset 0x1c in the 1990 * PCI configuration register 1991 * space. 1992 */ 1993 pciirq = dev->irq; 1994 printk(KERN_INFO "ISI PCI Card(Device ID 0x%x)\n", isicom_pci_tbl[idx].device); 1995 /* 1996 * allot the first empty slot in the array 1997 */ 1998 for (count=0; count < BOARD_COUNT; count++) { 1999 if (isi_card[count].base == 0) { 2000 isi_card[count].base = ioaddr; 2001 isi_card[count].irq = pciirq; 2002 isi_card[count].isa = NO; 2003 card++; 2004 break; 2005 } 2006 } 2007 } 2008 if (card >= BOARD_COUNT) break; 2009 } 2010 } 2011 2012 if (!(isi_card[0].base || isi_card[1].base || isi_card[2].base || isi_card[3].base)) { 2013 printk(KERN_ERR "ISICOM: No valid card configuration. Driver cannot be initialized...\n"); 2014 return -EIO; 2015 } 2016 retval=misc_register(&isiloader_device); 2017 if (retval<0) { 2018 printk(KERN_ERR "ISICOM: Unable to register firmware loader driver.\n"); 2019 return -EIO; 2020 } 2021 2022 if (!isicom_init()) { 2023 if (misc_deregister(&isiloader_device)) 2024 printk(KERN_ERR "ISICOM: Unable to unregister Firmware Loader driver\n"); 2025 return -EIO; 2026 } 2027 2028 init_timer(&tx); 2029 tx.expires = jiffies + 1; 2030 tx.data = 0; 2031 tx.function = isicom_tx; 2032 re_schedule = 1; 2033 add_timer(&tx); 2034 2035 return 0; 2036} 2037 2038void cleanup_module(void) 2039{ 2040 re_schedule = 0; 2041 set_current_state(TASK_INTERRUPTIBLE); 2042 schedule_timeout(HZ); 2043 2044 remove_bh(ISICOM_BH); 2045 2046#ifdef ISICOM_DEBUG 2047 printk("ISICOM: isicom_tx tx_count = %ld.\n", tx_count); 2048#endif 2049 2050#ifdef ISICOM_DEBUG 2051 printk("ISICOM: uregistering isr ...\n"); 2052#endif 2053 unregister_isr(); 2054 2055#ifdef ISICOM_DEBUG 2056 printk("ISICOM: unregistering drivers ...\n"); 2057#endif 2058 unregister_drivers(); 2059 2060#ifdef ISICOM_DEBUG 2061 printk("ISICOM: unregistering ioregion ...\n"); 2062#endif 2063 unregister_ioregion(); 2064 2065#ifdef ISICOM_DEBUG 2066 printk("ISICOM: freeing tmp_buf ...\n"); 2067#endif 2068 free_page((unsigned long)tmp_buf); 2069 2070#ifdef ISICOM_DEBUG 2071 printk("ISICOM: unregistering firmware loader ...\n"); 2072#endif 2073 if (misc_deregister(&isiloader_device)) 2074 printk(KERN_ERR "ISICOM: Unable to unregister Firmware Loader driver\n"); 2075} 2076