1/* 2 * SDLA An implementation of a driver for the Sangoma S502/S508 series 3 * multi-protocol PC interface card. Initial offering is with 4 * the DLCI driver, providing Frame Relay support for linux. 5 * 6 * Global definitions for the Frame relay interface. 7 * 8 * Version: @(#)sdla.c 0.30 12 Sep 1996 9 * 10 * Credits: Sangoma Technologies, for the use of 2 cards for an extended 11 * period of time. 12 * David Mandelstam <dm@sangoma.com> for getting me started on 13 * this project, and incentive to complete it. 14 * Gene Kozen <74604.152@compuserve.com> for providing me with 15 * important information about the cards. 16 * 17 * Author: Mike McLagan <mike.mclagan@linux.org> 18 * 19 * Changes: 20 * 0.15 Mike McLagan Improved error handling, packet dropping 21 * 0.20 Mike McLagan New transmit/receive flags for config 22 * If in FR mode, don't accept packets from 23 * non DLCI devices. 24 * 0.25 Mike McLagan Fixed problem with rejecting packets 25 * from non DLCI devices. 26 * 0.30 Mike McLagan Fixed kernel panic when used with modified 27 * ifconfig 28 * 29 * This program is free software; you can redistribute it and/or 30 * modify it under the terms of the GNU General Public License 31 * as published by the Free Software Foundation; either version 32 * 2 of the License, or (at your option) any later version. 33 */ 34 35#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 36 37#include <linux/module.h> 38#include <linux/kernel.h> 39#include <linux/types.h> 40#include <linux/fcntl.h> 41#include <linux/interrupt.h> 42#include <linux/ptrace.h> 43#include <linux/ioport.h> 44#include <linux/in.h> 45#include <linux/slab.h> 46#include <linux/string.h> 47#include <linux/timer.h> 48#include <linux/errno.h> 49#include <linux/init.h> 50#include <linux/netdevice.h> 51#include <linux/skbuff.h> 52#include <linux/if_arp.h> 53#include <linux/if_frad.h> 54#include <linux/sdla.h> 55#include <linux/bitops.h> 56 57#include <asm/io.h> 58#include <asm/dma.h> 59#include <asm/uaccess.h> 60 61static const char* version = "SDLA driver v0.30, 12 Sep 1996, mike.mclagan@linux.org"; 62 63static unsigned int valid_port[] = { 0x250, 0x270, 0x280, 0x300, 0x350, 0x360, 0x380, 0x390}; 64 65static unsigned int valid_mem[] = { 66 0xA0000, 0xA2000, 0xA4000, 0xA6000, 0xA8000, 0xAA000, 0xAC000, 0xAE000, 67 0xB0000, 0xB2000, 0xB4000, 0xB6000, 0xB8000, 0xBA000, 0xBC000, 0xBE000, 68 0xC0000, 0xC2000, 0xC4000, 0xC6000, 0xC8000, 0xCA000, 0xCC000, 0xCE000, 69 0xD0000, 0xD2000, 0xD4000, 0xD6000, 0xD8000, 0xDA000, 0xDC000, 0xDE000, 70 0xE0000, 0xE2000, 0xE4000, 0xE6000, 0xE8000, 0xEA000, 0xEC000, 0xEE000}; 71 72static DEFINE_SPINLOCK(sdla_lock); 73 74/********************************************************* 75 * 76 * these are the core routines that access the card itself 77 * 78 *********************************************************/ 79 80#define SDLA_WINDOW(dev,addr) outb((((addr) >> 13) & 0x1F), (dev)->base_addr + SDLA_REG_Z80_WINDOW) 81 82static void __sdla_read(struct net_device *dev, int addr, void *buf, short len) 83{ 84 char *temp; 85 const void *base; 86 int offset, bytes; 87 88 temp = buf; 89 while(len) 90 { 91 offset = addr & SDLA_ADDR_MASK; 92 bytes = offset + len > SDLA_WINDOW_SIZE ? SDLA_WINDOW_SIZE - offset : len; 93 base = (const void *) (dev->mem_start + offset); 94 95 SDLA_WINDOW(dev, addr); 96 memcpy(temp, base, bytes); 97 98 addr += bytes; 99 temp += bytes; 100 len -= bytes; 101 } 102} 103 104static void sdla_read(struct net_device *dev, int addr, void *buf, short len) 105{ 106 unsigned long flags; 107 spin_lock_irqsave(&sdla_lock, flags); 108 __sdla_read(dev, addr, buf, len); 109 spin_unlock_irqrestore(&sdla_lock, flags); 110} 111 112static void __sdla_write(struct net_device *dev, int addr, 113 const void *buf, short len) 114{ 115 const char *temp; 116 void *base; 117 int offset, bytes; 118 119 temp = buf; 120 while(len) 121 { 122 offset = addr & SDLA_ADDR_MASK; 123 bytes = offset + len > SDLA_WINDOW_SIZE ? SDLA_WINDOW_SIZE - offset : len; 124 base = (void *) (dev->mem_start + offset); 125 126 SDLA_WINDOW(dev, addr); 127 memcpy(base, temp, bytes); 128 129 addr += bytes; 130 temp += bytes; 131 len -= bytes; 132 } 133} 134 135static void sdla_write(struct net_device *dev, int addr, 136 const void *buf, short len) 137{ 138 unsigned long flags; 139 140 spin_lock_irqsave(&sdla_lock, flags); 141 __sdla_write(dev, addr, buf, len); 142 spin_unlock_irqrestore(&sdla_lock, flags); 143} 144 145 146static void sdla_clear(struct net_device *dev) 147{ 148 unsigned long flags; 149 char *base; 150 int len, addr, bytes; 151 152 len = 65536; 153 addr = 0; 154 bytes = SDLA_WINDOW_SIZE; 155 base = (void *) dev->mem_start; 156 157 spin_lock_irqsave(&sdla_lock, flags); 158 while(len) 159 { 160 SDLA_WINDOW(dev, addr); 161 memset(base, 0, bytes); 162 163 addr += bytes; 164 len -= bytes; 165 } 166 spin_unlock_irqrestore(&sdla_lock, flags); 167 168} 169 170static char sdla_byte(struct net_device *dev, int addr) 171{ 172 unsigned long flags; 173 char byte, *temp; 174 175 temp = (void *) (dev->mem_start + (addr & SDLA_ADDR_MASK)); 176 177 spin_lock_irqsave(&sdla_lock, flags); 178 SDLA_WINDOW(dev, addr); 179 byte = *temp; 180 spin_unlock_irqrestore(&sdla_lock, flags); 181 182 return byte; 183} 184 185static void sdla_stop(struct net_device *dev) 186{ 187 struct frad_local *flp; 188 189 flp = netdev_priv(dev); 190 switch(flp->type) 191 { 192 case SDLA_S502A: 193 outb(SDLA_S502A_HALT, dev->base_addr + SDLA_REG_CONTROL); 194 flp->state = SDLA_HALT; 195 break; 196 case SDLA_S502E: 197 outb(SDLA_HALT, dev->base_addr + SDLA_REG_Z80_CONTROL); 198 outb(SDLA_S502E_ENABLE, dev->base_addr + SDLA_REG_CONTROL); 199 flp->state = SDLA_S502E_ENABLE; 200 break; 201 case SDLA_S507: 202 flp->state &= ~SDLA_CPUEN; 203 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL); 204 break; 205 case SDLA_S508: 206 flp->state &= ~SDLA_CPUEN; 207 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL); 208 break; 209 } 210} 211 212static void sdla_start(struct net_device *dev) 213{ 214 struct frad_local *flp; 215 216 flp = netdev_priv(dev); 217 switch(flp->type) 218 { 219 case SDLA_S502A: 220 outb(SDLA_S502A_NMI, dev->base_addr + SDLA_REG_CONTROL); 221 outb(SDLA_S502A_START, dev->base_addr + SDLA_REG_CONTROL); 222 flp->state = SDLA_S502A_START; 223 break; 224 case SDLA_S502E: 225 outb(SDLA_S502E_CPUEN, dev->base_addr + SDLA_REG_Z80_CONTROL); 226 outb(0x00, dev->base_addr + SDLA_REG_CONTROL); 227 flp->state = 0; 228 break; 229 case SDLA_S507: 230 flp->state |= SDLA_CPUEN; 231 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL); 232 break; 233 case SDLA_S508: 234 flp->state |= SDLA_CPUEN; 235 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL); 236 break; 237 } 238} 239 240/**************************************************** 241 * 242 * this is used for the S502A/E cards to determine 243 * the speed of the onboard CPU. Calibration is 244 * necessary for the Frame Relay code uploaded 245 * later. Incorrect results cause timing problems 246 * with link checks & status messages 247 * 248 ***************************************************/ 249 250static int sdla_z80_poll(struct net_device *dev, int z80_addr, int jiffs, char resp1, char resp2) 251{ 252 unsigned long start, done, now; 253 char resp, *temp; 254 255 start = now = jiffies; 256 done = jiffies + jiffs; 257 258 temp = (void *)dev->mem_start; 259 temp += z80_addr & SDLA_ADDR_MASK; 260 261 resp = ~resp1; 262 while (time_before(jiffies, done) && (resp != resp1) && (!resp2 || (resp != resp2))) 263 { 264 if (jiffies != now) 265 { 266 SDLA_WINDOW(dev, z80_addr); 267 now = jiffies; 268 resp = *temp; 269 } 270 } 271 return time_before(jiffies, done) ? jiffies - start : -1; 272} 273 274/* constants for Z80 CPU speed */ 275#define Z80_READY '1' /* Z80 is ready to begin */ 276#define LOADER_READY '2' /* driver is ready to begin */ 277#define Z80_SCC_OK '3' /* SCC is on board */ 278#define Z80_SCC_BAD '4' /* SCC was not found */ 279 280static int sdla_cpuspeed(struct net_device *dev, struct ifreq *ifr) 281{ 282 int jiffs; 283 char data; 284 285 sdla_start(dev); 286 if (sdla_z80_poll(dev, 0, 3*HZ, Z80_READY, 0) < 0) 287 return -EIO; 288 289 data = LOADER_READY; 290 sdla_write(dev, 0, &data, 1); 291 292 if ((jiffs = sdla_z80_poll(dev, 0, 8*HZ, Z80_SCC_OK, Z80_SCC_BAD)) < 0) 293 return -EIO; 294 295 sdla_stop(dev); 296 sdla_read(dev, 0, &data, 1); 297 298 if (data == Z80_SCC_BAD) 299 { 300 printk("%s: SCC bad\n", dev->name); 301 return -EIO; 302 } 303 304 if (data != Z80_SCC_OK) 305 return -EINVAL; 306 307 if (jiffs < 165) 308 ifr->ifr_mtu = SDLA_CPU_16M; 309 else if (jiffs < 220) 310 ifr->ifr_mtu = SDLA_CPU_10M; 311 else if (jiffs < 258) 312 ifr->ifr_mtu = SDLA_CPU_8M; 313 else if (jiffs < 357) 314 ifr->ifr_mtu = SDLA_CPU_7M; 315 else if (jiffs < 467) 316 ifr->ifr_mtu = SDLA_CPU_5M; 317 else 318 ifr->ifr_mtu = SDLA_CPU_3M; 319 320 return 0; 321} 322 323/************************************************ 324 * 325 * Direct interaction with the Frame Relay code 326 * starts here. 327 * 328 ************************************************/ 329 330struct _dlci_stat 331{ 332 short dlci; 333 char flags; 334} __packed; 335 336struct _frad_stat 337{ 338 char flags; 339 struct _dlci_stat dlcis[SDLA_MAX_DLCI]; 340}; 341 342static void sdla_errors(struct net_device *dev, int cmd, int dlci, int ret, int len, void *data) 343{ 344 struct _dlci_stat *pstatus; 345 short *pdlci; 346 int i; 347 char *state, line[30]; 348 349 switch (ret) 350 { 351 case SDLA_RET_MODEM: 352 state = data; 353 if (*state & SDLA_MODEM_DCD_LOW) 354 netdev_info(dev, "Modem DCD unexpectedly low!\n"); 355 if (*state & SDLA_MODEM_CTS_LOW) 356 netdev_info(dev, "Modem CTS unexpectedly low!\n"); 357 /* I should probably do something about this! */ 358 break; 359 360 case SDLA_RET_CHANNEL_OFF: 361 netdev_info(dev, "Channel became inoperative!\n"); 362 /* same here */ 363 break; 364 365 case SDLA_RET_CHANNEL_ON: 366 netdev_info(dev, "Channel became operative!\n"); 367 /* same here */ 368 break; 369 370 case SDLA_RET_DLCI_STATUS: 371 netdev_info(dev, "Status change reported by Access Node\n"); 372 len /= sizeof(struct _dlci_stat); 373 for(pstatus = data, i=0;i < len;i++,pstatus++) 374 { 375 if (pstatus->flags & SDLA_DLCI_NEW) 376 state = "new"; 377 else if (pstatus->flags & SDLA_DLCI_DELETED) 378 state = "deleted"; 379 else if (pstatus->flags & SDLA_DLCI_ACTIVE) 380 state = "active"; 381 else 382 { 383 sprintf(line, "unknown status: %02X", pstatus->flags); 384 state = line; 385 } 386 netdev_info(dev, "DLCI %i: %s\n", 387 pstatus->dlci, state); 388 /* same here */ 389 } 390 break; 391 392 case SDLA_RET_DLCI_UNKNOWN: 393 netdev_info(dev, "Received unknown DLCIs:"); 394 len /= sizeof(short); 395 for(pdlci = data,i=0;i < len;i++,pdlci++) 396 pr_cont(" %i", *pdlci); 397 pr_cont("\n"); 398 break; 399 400 case SDLA_RET_TIMEOUT: 401 netdev_err(dev, "Command timed out!\n"); 402 break; 403 404 case SDLA_RET_BUF_OVERSIZE: 405 netdev_info(dev, "Bc/CIR overflow, acceptable size is %i\n", 406 len); 407 break; 408 409 case SDLA_RET_BUF_TOO_BIG: 410 netdev_info(dev, "Buffer size over specified max of %i\n", 411 len); 412 break; 413 414 case SDLA_RET_CHANNEL_INACTIVE: 415 case SDLA_RET_DLCI_INACTIVE: 416 case SDLA_RET_CIR_OVERFLOW: 417 case SDLA_RET_NO_BUFS: 418 if (cmd == SDLA_INFORMATION_WRITE) 419 break; 420 421 default: 422 netdev_dbg(dev, "Cmd 0x%02X generated return code 0x%02X\n", 423 cmd, ret); 424 /* Further processing could be done here */ 425 break; 426 } 427} 428 429static int sdla_cmd(struct net_device *dev, int cmd, short dlci, short flags, 430 void *inbuf, short inlen, void *outbuf, short *outlen) 431{ 432 static struct _frad_stat status; 433 struct frad_local *flp; 434 struct sdla_cmd *cmd_buf; 435 unsigned long pflags; 436 unsigned long jiffs; 437 int ret, waiting, len; 438 long window; 439 440 flp = netdev_priv(dev); 441 window = flp->type == SDLA_S508 ? SDLA_508_CMD_BUF : SDLA_502_CMD_BUF; 442 cmd_buf = (struct sdla_cmd *)(dev->mem_start + (window & SDLA_ADDR_MASK)); 443 ret = 0; 444 len = 0; 445 jiffs = jiffies + HZ; /* 1 second is plenty */ 446 447 spin_lock_irqsave(&sdla_lock, pflags); 448 SDLA_WINDOW(dev, window); 449 cmd_buf->cmd = cmd; 450 cmd_buf->dlci = dlci; 451 cmd_buf->flags = flags; 452 453 if (inbuf) 454 memcpy(cmd_buf->data, inbuf, inlen); 455 456 cmd_buf->length = inlen; 457 458 cmd_buf->opp_flag = 1; 459 spin_unlock_irqrestore(&sdla_lock, pflags); 460 461 waiting = 1; 462 len = 0; 463 while (waiting && time_before_eq(jiffies, jiffs)) 464 { 465 if (waiting++ % 3) 466 { 467 spin_lock_irqsave(&sdla_lock, pflags); 468 SDLA_WINDOW(dev, window); 469 waiting = ((volatile int)(cmd_buf->opp_flag)); 470 spin_unlock_irqrestore(&sdla_lock, pflags); 471 } 472 } 473 474 if (!waiting) 475 { 476 477 spin_lock_irqsave(&sdla_lock, pflags); 478 SDLA_WINDOW(dev, window); 479 ret = cmd_buf->retval; 480 len = cmd_buf->length; 481 if (outbuf && outlen) 482 { 483 *outlen = *outlen >= len ? len : *outlen; 484 485 if (*outlen) 486 memcpy(outbuf, cmd_buf->data, *outlen); 487 } 488 489 /* This is a local copy that's used for error handling */ 490 if (ret) 491 memcpy(&status, cmd_buf->data, len > sizeof(status) ? sizeof(status) : len); 492 493 spin_unlock_irqrestore(&sdla_lock, pflags); 494 } 495 else 496 ret = SDLA_RET_TIMEOUT; 497 498 if (ret != SDLA_RET_OK) 499 sdla_errors(dev, cmd, dlci, ret, len, &status); 500 501 return ret; 502} 503 504/*********************************************** 505 * 506 * these functions are called by the DLCI driver 507 * 508 ***********************************************/ 509 510static int sdla_reconfig(struct net_device *dev); 511 512static int sdla_activate(struct net_device *slave, struct net_device *master) 513{ 514 struct frad_local *flp; 515 int i; 516 517 flp = netdev_priv(slave); 518 519 for(i=0;i<CONFIG_DLCI_MAX;i++) 520 if (flp->master[i] == master) 521 break; 522 523 if (i == CONFIG_DLCI_MAX) 524 return -ENODEV; 525 526 flp->dlci[i] = abs(flp->dlci[i]); 527 528 if (netif_running(slave) && (flp->config.station == FRAD_STATION_NODE)) 529 sdla_cmd(slave, SDLA_ACTIVATE_DLCI, 0, 0, &flp->dlci[i], sizeof(short), NULL, NULL); 530 531 return 0; 532} 533 534static int sdla_deactivate(struct net_device *slave, struct net_device *master) 535{ 536 struct frad_local *flp; 537 int i; 538 539 flp = netdev_priv(slave); 540 541 for(i=0;i<CONFIG_DLCI_MAX;i++) 542 if (flp->master[i] == master) 543 break; 544 545 if (i == CONFIG_DLCI_MAX) 546 return -ENODEV; 547 548 flp->dlci[i] = -abs(flp->dlci[i]); 549 550 if (netif_running(slave) && (flp->config.station == FRAD_STATION_NODE)) 551 sdla_cmd(slave, SDLA_DEACTIVATE_DLCI, 0, 0, &flp->dlci[i], sizeof(short), NULL, NULL); 552 553 return 0; 554} 555 556static int sdla_assoc(struct net_device *slave, struct net_device *master) 557{ 558 struct frad_local *flp; 559 int i; 560 561 if (master->type != ARPHRD_DLCI) 562 return -EINVAL; 563 564 flp = netdev_priv(slave); 565 566 for(i=0;i<CONFIG_DLCI_MAX;i++) 567 { 568 if (!flp->master[i]) 569 break; 570 if (abs(flp->dlci[i]) == *(short *)(master->dev_addr)) 571 return -EADDRINUSE; 572 } 573 574 if (i == CONFIG_DLCI_MAX) 575 return -EMLINK; /* #### Alan: Comments on this ?? */ 576 577 578 flp->master[i] = master; 579 flp->dlci[i] = -*(short *)(master->dev_addr); 580 master->mtu = slave->mtu; 581 582 if (netif_running(slave)) { 583 if (flp->config.station == FRAD_STATION_CPE) 584 sdla_reconfig(slave); 585 else 586 sdla_cmd(slave, SDLA_ADD_DLCI, 0, 0, master->dev_addr, sizeof(short), NULL, NULL); 587 } 588 589 return 0; 590} 591 592static int sdla_deassoc(struct net_device *slave, struct net_device *master) 593{ 594 struct frad_local *flp; 595 int i; 596 597 flp = netdev_priv(slave); 598 599 for(i=0;i<CONFIG_DLCI_MAX;i++) 600 if (flp->master[i] == master) 601 break; 602 603 if (i == CONFIG_DLCI_MAX) 604 return -ENODEV; 605 606 flp->master[i] = NULL; 607 flp->dlci[i] = 0; 608 609 610 if (netif_running(slave)) { 611 if (flp->config.station == FRAD_STATION_CPE) 612 sdla_reconfig(slave); 613 else 614 sdla_cmd(slave, SDLA_DELETE_DLCI, 0, 0, master->dev_addr, sizeof(short), NULL, NULL); 615 } 616 617 return 0; 618} 619 620static int sdla_dlci_conf(struct net_device *slave, struct net_device *master, int get) 621{ 622 struct frad_local *flp; 623 struct dlci_local *dlp; 624 int i; 625 short len, ret; 626 627 flp = netdev_priv(slave); 628 629 for(i=0;i<CONFIG_DLCI_MAX;i++) 630 if (flp->master[i] == master) 631 break; 632 633 if (i == CONFIG_DLCI_MAX) 634 return -ENODEV; 635 636 dlp = netdev_priv(master); 637 638 ret = SDLA_RET_OK; 639 len = sizeof(struct dlci_conf); 640 if (netif_running(slave)) { 641 if (get) 642 ret = sdla_cmd(slave, SDLA_READ_DLCI_CONFIGURATION, abs(flp->dlci[i]), 0, 643 NULL, 0, &dlp->config, &len); 644 else 645 ret = sdla_cmd(slave, SDLA_SET_DLCI_CONFIGURATION, abs(flp->dlci[i]), 0, 646 &dlp->config, sizeof(struct dlci_conf) - 4 * sizeof(short), NULL, NULL); 647 } 648 649 return ret == SDLA_RET_OK ? 0 : -EIO; 650} 651 652/************************** 653 * 654 * now for the Linux driver 655 * 656 **************************/ 657 658/* NOTE: the DLCI driver deals with freeing the SKB!! */ 659static netdev_tx_t sdla_transmit(struct sk_buff *skb, 660 struct net_device *dev) 661{ 662 struct frad_local *flp; 663 int ret, addr, accept, i; 664 short size; 665 unsigned long flags; 666 struct buf_entry *pbuf; 667 668 flp = netdev_priv(dev); 669 ret = 0; 670 accept = 1; 671 672 netif_stop_queue(dev); 673 674 /* 675 * stupid GateD insists on setting up the multicast router thru us 676 * and we're ill equipped to handle a non Frame Relay packet at this 677 * time! 678 */ 679 680 accept = 1; 681 switch (dev->type) 682 { 683 case ARPHRD_FRAD: 684 if (skb->dev->type != ARPHRD_DLCI) 685 { 686 netdev_warn(dev, "Non DLCI device, type %i, tried to send on FRAD module\n", 687 skb->dev->type); 688 accept = 0; 689 } 690 break; 691 default: 692 netdev_warn(dev, "unknown firmware type 0x%04X\n", 693 dev->type); 694 accept = 0; 695 break; 696 } 697 if (accept) 698 { 699 /* this is frame specific, but till there's a PPP module, it's the default */ 700 switch (flp->type) 701 { 702 case SDLA_S502A: 703 case SDLA_S502E: 704 ret = sdla_cmd(dev, SDLA_INFORMATION_WRITE, *(short *)(skb->dev->dev_addr), 0, skb->data, skb->len, NULL, NULL); 705 break; 706 case SDLA_S508: 707 size = sizeof(addr); 708 ret = sdla_cmd(dev, SDLA_INFORMATION_WRITE, *(short *)(skb->dev->dev_addr), 0, NULL, skb->len, &addr, &size); 709 if (ret == SDLA_RET_OK) 710 { 711 712 spin_lock_irqsave(&sdla_lock, flags); 713 SDLA_WINDOW(dev, addr); 714 pbuf = (void *)(((int) dev->mem_start) + (addr & SDLA_ADDR_MASK)); 715 __sdla_write(dev, pbuf->buf_addr, skb->data, skb->len); 716 SDLA_WINDOW(dev, addr); 717 pbuf->opp_flag = 1; 718 spin_unlock_irqrestore(&sdla_lock, flags); 719 } 720 break; 721 } 722 723 switch (ret) 724 { 725 case SDLA_RET_OK: 726 dev->stats.tx_packets++; 727 break; 728 729 case SDLA_RET_CIR_OVERFLOW: 730 case SDLA_RET_BUF_OVERSIZE: 731 case SDLA_RET_NO_BUFS: 732 dev->stats.tx_dropped++; 733 break; 734 735 default: 736 dev->stats.tx_errors++; 737 break; 738 } 739 } 740 netif_wake_queue(dev); 741 for(i=0;i<CONFIG_DLCI_MAX;i++) 742 { 743 if(flp->master[i]!=NULL) 744 netif_wake_queue(flp->master[i]); 745 } 746 747 dev_kfree_skb(skb); 748 return NETDEV_TX_OK; 749} 750 751static void sdla_receive(struct net_device *dev) 752{ 753 struct net_device *master; 754 struct frad_local *flp; 755 struct dlci_local *dlp; 756 struct sk_buff *skb; 757 758 struct sdla_cmd *cmd; 759 struct buf_info *pbufi; 760 struct buf_entry *pbuf; 761 762 unsigned long flags; 763 int i=0, received, success, addr, buf_base, buf_top; 764 short dlci, len, len2, split; 765 766 flp = netdev_priv(dev); 767 success = 1; 768 received = addr = buf_top = buf_base = 0; 769 len = dlci = 0; 770 skb = NULL; 771 master = NULL; 772 cmd = NULL; 773 pbufi = NULL; 774 pbuf = NULL; 775 776 spin_lock_irqsave(&sdla_lock, flags); 777 778 switch (flp->type) 779 { 780 case SDLA_S502A: 781 case SDLA_S502E: 782 cmd = (void *) (dev->mem_start + (SDLA_502_RCV_BUF & SDLA_ADDR_MASK)); 783 SDLA_WINDOW(dev, SDLA_502_RCV_BUF); 784 success = cmd->opp_flag; 785 if (!success) 786 break; 787 788 dlci = cmd->dlci; 789 len = cmd->length; 790 break; 791 792 case SDLA_S508: 793 pbufi = (void *) (dev->mem_start + (SDLA_508_RXBUF_INFO & SDLA_ADDR_MASK)); 794 SDLA_WINDOW(dev, SDLA_508_RXBUF_INFO); 795 pbuf = (void *) (dev->mem_start + ((pbufi->rse_base + flp->buffer * sizeof(struct buf_entry)) & SDLA_ADDR_MASK)); 796 success = pbuf->opp_flag; 797 if (!success) 798 break; 799 800 buf_top = pbufi->buf_top; 801 buf_base = pbufi->buf_base; 802 dlci = pbuf->dlci; 803 len = pbuf->length; 804 addr = pbuf->buf_addr; 805 break; 806 } 807 808 /* common code, find the DLCI and get the SKB */ 809 if (success) 810 { 811 for (i=0;i<CONFIG_DLCI_MAX;i++) 812 if (flp->dlci[i] == dlci) 813 break; 814 815 if (i == CONFIG_DLCI_MAX) 816 { 817 netdev_notice(dev, "Received packet from invalid DLCI %i, ignoring\n", 818 dlci); 819 dev->stats.rx_errors++; 820 success = 0; 821 } 822 } 823 824 if (success) 825 { 826 master = flp->master[i]; 827 skb = dev_alloc_skb(len + sizeof(struct frhdr)); 828 if (skb == NULL) 829 { 830 netdev_notice(dev, "Memory squeeze, dropping packet\n"); 831 dev->stats.rx_dropped++; 832 success = 0; 833 } 834 else 835 skb_reserve(skb, sizeof(struct frhdr)); 836 } 837 838 /* pick up the data */ 839 switch (flp->type) 840 { 841 case SDLA_S502A: 842 case SDLA_S502E: 843 if (success) 844 __sdla_read(dev, SDLA_502_RCV_BUF + SDLA_502_DATA_OFS, skb_put(skb,len), len); 845 846 SDLA_WINDOW(dev, SDLA_502_RCV_BUF); 847 cmd->opp_flag = 0; 848 break; 849 850 case SDLA_S508: 851 if (success) 852 { 853 /* is this buffer split off the end of the internal ring buffer */ 854 split = addr + len > buf_top + 1 ? len - (buf_top - addr + 1) : 0; 855 len2 = len - split; 856 857 __sdla_read(dev, addr, skb_put(skb, len2), len2); 858 if (split) 859 __sdla_read(dev, buf_base, skb_put(skb, split), split); 860 } 861 862 /* increment the buffer we're looking at */ 863 SDLA_WINDOW(dev, SDLA_508_RXBUF_INFO); 864 flp->buffer = (flp->buffer + 1) % pbufi->rse_num; 865 pbuf->opp_flag = 0; 866 break; 867 } 868 869 if (success) 870 { 871 dev->stats.rx_packets++; 872 dlp = netdev_priv(master); 873 (*dlp->receive)(skb, master); 874 } 875 876 spin_unlock_irqrestore(&sdla_lock, flags); 877} 878 879static irqreturn_t sdla_isr(int dummy, void *dev_id) 880{ 881 struct net_device *dev; 882 struct frad_local *flp; 883 char byte; 884 885 dev = dev_id; 886 887 flp = netdev_priv(dev); 888 889 if (!flp->initialized) 890 { 891 netdev_warn(dev, "irq %d for uninitialized device\n", dev->irq); 892 return IRQ_NONE; 893 } 894 895 byte = sdla_byte(dev, flp->type == SDLA_S508 ? SDLA_508_IRQ_INTERFACE : SDLA_502_IRQ_INTERFACE); 896 switch (byte) 897 { 898 case SDLA_INTR_RX: 899 sdla_receive(dev); 900 break; 901 902 /* the command will get an error return, which is processed above */ 903 case SDLA_INTR_MODEM: 904 case SDLA_INTR_STATUS: 905 sdla_cmd(dev, SDLA_READ_DLC_STATUS, 0, 0, NULL, 0, NULL, NULL); 906 break; 907 908 case SDLA_INTR_TX: 909 case SDLA_INTR_COMPLETE: 910 case SDLA_INTR_TIMER: 911 netdev_warn(dev, "invalid irq flag 0x%02X\n", byte); 912 break; 913 } 914 915 /* the S502E requires a manual acknowledgement of the interrupt */ 916 if (flp->type == SDLA_S502E) 917 { 918 flp->state &= ~SDLA_S502E_INTACK; 919 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL); 920 flp->state |= SDLA_S502E_INTACK; 921 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL); 922 } 923 924 /* this clears the byte, informing the Z80 we're done */ 925 byte = 0; 926 sdla_write(dev, flp->type == SDLA_S508 ? SDLA_508_IRQ_INTERFACE : SDLA_502_IRQ_INTERFACE, &byte, sizeof(byte)); 927 return IRQ_HANDLED; 928} 929 930static void sdla_poll(unsigned long device) 931{ 932 struct net_device *dev; 933 struct frad_local *flp; 934 935 dev = (struct net_device *) device; 936 flp = netdev_priv(dev); 937 938 if (sdla_byte(dev, SDLA_502_RCV_BUF)) 939 sdla_receive(dev); 940 941 flp->timer.expires = 1; 942 add_timer(&flp->timer); 943} 944 945static int sdla_close(struct net_device *dev) 946{ 947 struct frad_local *flp; 948 struct intr_info intr; 949 int len, i; 950 short dlcis[CONFIG_DLCI_MAX]; 951 952 flp = netdev_priv(dev); 953 954 len = 0; 955 for(i=0;i<CONFIG_DLCI_MAX;i++) 956 if (flp->dlci[i]) 957 dlcis[len++] = abs(flp->dlci[i]); 958 len *= 2; 959 960 if (flp->config.station == FRAD_STATION_NODE) 961 { 962 for(i=0;i<CONFIG_DLCI_MAX;i++) 963 if (flp->dlci[i] > 0) 964 sdla_cmd(dev, SDLA_DEACTIVATE_DLCI, 0, 0, dlcis, len, NULL, NULL); 965 sdla_cmd(dev, SDLA_DELETE_DLCI, 0, 0, &flp->dlci[i], sizeof(flp->dlci[i]), NULL, NULL); 966 } 967 968 memset(&intr, 0, sizeof(intr)); 969 /* let's start up the reception */ 970 switch(flp->type) 971 { 972 case SDLA_S502A: 973 del_timer(&flp->timer); 974 break; 975 976 case SDLA_S502E: 977 sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(char) + sizeof(short), NULL, NULL); 978 flp->state &= ~SDLA_S502E_INTACK; 979 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL); 980 break; 981 982 case SDLA_S507: 983 break; 984 985 case SDLA_S508: 986 sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(struct intr_info), NULL, NULL); 987 flp->state &= ~SDLA_S508_INTEN; 988 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL); 989 break; 990 } 991 992 sdla_cmd(dev, SDLA_DISABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL); 993 994 netif_stop_queue(dev); 995 996 return 0; 997} 998 999struct conf_data { 1000 struct frad_conf config; 1001 short dlci[CONFIG_DLCI_MAX]; 1002}; 1003 1004static int sdla_open(struct net_device *dev) 1005{ 1006 struct frad_local *flp; 1007 struct dlci_local *dlp; 1008 struct conf_data data; 1009 struct intr_info intr; 1010 int len, i; 1011 char byte; 1012 1013 flp = netdev_priv(dev); 1014 1015 if (!flp->initialized) 1016 return -EPERM; 1017 1018 if (!flp->configured) 1019 return -EPERM; 1020 1021 /* time to send in the configuration */ 1022 len = 0; 1023 for(i=0;i<CONFIG_DLCI_MAX;i++) 1024 if (flp->dlci[i]) 1025 data.dlci[len++] = abs(flp->dlci[i]); 1026 len *= 2; 1027 1028 memcpy(&data.config, &flp->config, sizeof(struct frad_conf)); 1029 len += sizeof(struct frad_conf); 1030 1031 sdla_cmd(dev, SDLA_DISABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL); 1032 sdla_cmd(dev, SDLA_SET_DLCI_CONFIGURATION, 0, 0, &data, len, NULL, NULL); 1033 1034 if (flp->type == SDLA_S508) 1035 flp->buffer = 0; 1036 1037 sdla_cmd(dev, SDLA_ENABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL); 1038 1039 /* let's start up the reception */ 1040 memset(&intr, 0, sizeof(intr)); 1041 switch(flp->type) 1042 { 1043 case SDLA_S502A: 1044 flp->timer.expires = 1; 1045 add_timer(&flp->timer); 1046 break; 1047 1048 case SDLA_S502E: 1049 flp->state |= SDLA_S502E_ENABLE; 1050 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL); 1051 flp->state |= SDLA_S502E_INTACK; 1052 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL); 1053 byte = 0; 1054 sdla_write(dev, SDLA_502_IRQ_INTERFACE, &byte, sizeof(byte)); 1055 intr.flags = SDLA_INTR_RX | SDLA_INTR_STATUS | SDLA_INTR_MODEM; 1056 sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(char) + sizeof(short), NULL, NULL); 1057 break; 1058 1059 case SDLA_S507: 1060 break; 1061 1062 case SDLA_S508: 1063 flp->state |= SDLA_S508_INTEN; 1064 outb(flp->state, dev->base_addr + SDLA_REG_CONTROL); 1065 byte = 0; 1066 sdla_write(dev, SDLA_508_IRQ_INTERFACE, &byte, sizeof(byte)); 1067 intr.flags = SDLA_INTR_RX | SDLA_INTR_STATUS | SDLA_INTR_MODEM; 1068 intr.irq = dev->irq; 1069 sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(struct intr_info), NULL, NULL); 1070 break; 1071 } 1072 1073 if (flp->config.station == FRAD_STATION_CPE) 1074 { 1075 byte = SDLA_ICS_STATUS_ENQ; 1076 sdla_cmd(dev, SDLA_ISSUE_IN_CHANNEL_SIGNAL, 0, 0, &byte, sizeof(byte), NULL, NULL); 1077 } 1078 else 1079 { 1080 sdla_cmd(dev, SDLA_ADD_DLCI, 0, 0, data.dlci, len - sizeof(struct frad_conf), NULL, NULL); 1081 for(i=0;i<CONFIG_DLCI_MAX;i++) 1082 if (flp->dlci[i] > 0) 1083 sdla_cmd(dev, SDLA_ACTIVATE_DLCI, 0, 0, &flp->dlci[i], 2*sizeof(flp->dlci[i]), NULL, NULL); 1084 } 1085 1086 /* configure any specific DLCI settings */ 1087 for(i=0;i<CONFIG_DLCI_MAX;i++) 1088 if (flp->dlci[i]) 1089 { 1090 dlp = netdev_priv(flp->master[i]); 1091 if (dlp->configured) 1092 sdla_cmd(dev, SDLA_SET_DLCI_CONFIGURATION, abs(flp->dlci[i]), 0, &dlp->config, sizeof(struct dlci_conf), NULL, NULL); 1093 } 1094 1095 netif_start_queue(dev); 1096 1097 return 0; 1098} 1099 1100static int sdla_config(struct net_device *dev, struct frad_conf __user *conf, int get) 1101{ 1102 struct frad_local *flp; 1103 struct conf_data data; 1104 int i; 1105 short size; 1106 1107 if (dev->type == 0xFFFF) 1108 return -EUNATCH; 1109 1110 flp = netdev_priv(dev); 1111 1112 if (!get) 1113 { 1114 if (netif_running(dev)) 1115 return -EBUSY; 1116 1117 if(copy_from_user(&data.config, conf, sizeof(struct frad_conf))) 1118 return -EFAULT; 1119 1120 if (data.config.station & ~FRAD_STATION_NODE) 1121 return -EINVAL; 1122 1123 if (data.config.flags & ~FRAD_VALID_FLAGS) 1124 return -EINVAL; 1125 1126 if ((data.config.kbaud < 0) || 1127 ((data.config.kbaud > 128) && (flp->type != SDLA_S508))) 1128 return -EINVAL; 1129 1130 if (data.config.clocking & ~(FRAD_CLOCK_INT | SDLA_S508_PORT_RS232)) 1131 return -EINVAL; 1132 1133 if ((data.config.mtu < 0) || (data.config.mtu > SDLA_MAX_MTU)) 1134 return -EINVAL; 1135 1136 if ((data.config.T391 < 5) || (data.config.T391 > 30)) 1137 return -EINVAL; 1138 1139 if ((data.config.T392 < 5) || (data.config.T392 > 30)) 1140 return -EINVAL; 1141 1142 if ((data.config.N391 < 1) || (data.config.N391 > 255)) 1143 return -EINVAL; 1144 1145 if ((data.config.N392 < 1) || (data.config.N392 > 10)) 1146 return -EINVAL; 1147 1148 if ((data.config.N393 < 1) || (data.config.N393 > 10)) 1149 return -EINVAL; 1150 1151 memcpy(&flp->config, &data.config, sizeof(struct frad_conf)); 1152 flp->config.flags |= SDLA_DIRECT_RECV; 1153 1154 if (flp->type == SDLA_S508) 1155 flp->config.flags |= SDLA_TX70_RX30; 1156 1157 if (dev->mtu != flp->config.mtu) 1158 { 1159 /* this is required to change the MTU */ 1160 dev->mtu = flp->config.mtu; 1161 for(i=0;i<CONFIG_DLCI_MAX;i++) 1162 if (flp->master[i]) 1163 flp->master[i]->mtu = flp->config.mtu; 1164 } 1165 1166 flp->config.mtu += sizeof(struct frhdr); 1167 1168 /* off to the races! */ 1169 if (!flp->configured) 1170 sdla_start(dev); 1171 1172 flp->configured = 1; 1173 } 1174 else 1175 { 1176 /* no sense reading if the CPU isn't started */ 1177 if (netif_running(dev)) 1178 { 1179 size = sizeof(data); 1180 if (sdla_cmd(dev, SDLA_READ_DLCI_CONFIGURATION, 0, 0, NULL, 0, &data, &size) != SDLA_RET_OK) 1181 return -EIO; 1182 } 1183 else 1184 if (flp->configured) 1185 memcpy(&data.config, &flp->config, sizeof(struct frad_conf)); 1186 else 1187 memset(&data.config, 0, sizeof(struct frad_conf)); 1188 1189 memcpy(&flp->config, &data.config, sizeof(struct frad_conf)); 1190 data.config.flags &= FRAD_VALID_FLAGS; 1191 data.config.mtu -= data.config.mtu > sizeof(struct frhdr) ? sizeof(struct frhdr) : data.config.mtu; 1192 return copy_to_user(conf, &data.config, sizeof(struct frad_conf))?-EFAULT:0; 1193 } 1194 1195 return 0; 1196} 1197 1198static int sdla_xfer(struct net_device *dev, struct sdla_mem __user *info, int read) 1199{ 1200 struct sdla_mem mem; 1201 char *temp; 1202 1203 if(copy_from_user(&mem, info, sizeof(mem))) 1204 return -EFAULT; 1205 1206 if (read) 1207 { 1208 temp = kzalloc(mem.len, GFP_KERNEL); 1209 if (!temp) 1210 return -ENOMEM; 1211 sdla_read(dev, mem.addr, temp, mem.len); 1212 if(copy_to_user(mem.data, temp, mem.len)) 1213 { 1214 kfree(temp); 1215 return -EFAULT; 1216 } 1217 kfree(temp); 1218 } 1219 else 1220 { 1221 temp = memdup_user(mem.data, mem.len); 1222 if (IS_ERR(temp)) 1223 return PTR_ERR(temp); 1224 sdla_write(dev, mem.addr, temp, mem.len); 1225 kfree(temp); 1226 } 1227 return 0; 1228} 1229 1230static int sdla_reconfig(struct net_device *dev) 1231{ 1232 struct frad_local *flp; 1233 struct conf_data data; 1234 int i, len; 1235 1236 flp = netdev_priv(dev); 1237 1238 len = 0; 1239 for(i=0;i<CONFIG_DLCI_MAX;i++) 1240 if (flp->dlci[i]) 1241 data.dlci[len++] = flp->dlci[i]; 1242 len *= 2; 1243 1244 memcpy(&data, &flp->config, sizeof(struct frad_conf)); 1245 len += sizeof(struct frad_conf); 1246 1247 sdla_cmd(dev, SDLA_DISABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL); 1248 sdla_cmd(dev, SDLA_SET_DLCI_CONFIGURATION, 0, 0, &data, len, NULL, NULL); 1249 sdla_cmd(dev, SDLA_ENABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL); 1250 1251 return 0; 1252} 1253 1254static int sdla_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 1255{ 1256 struct frad_local *flp; 1257 1258 if(!capable(CAP_NET_ADMIN)) 1259 return -EPERM; 1260 1261 flp = netdev_priv(dev); 1262 1263 if (!flp->initialized) 1264 return -EINVAL; 1265 1266 switch (cmd) 1267 { 1268 case FRAD_GET_CONF: 1269 case FRAD_SET_CONF: 1270 return sdla_config(dev, ifr->ifr_data, cmd == FRAD_GET_CONF); 1271 1272 case SDLA_IDENTIFY: 1273 ifr->ifr_flags = flp->type; 1274 break; 1275 1276 case SDLA_CPUSPEED: 1277 return sdla_cpuspeed(dev, ifr); 1278 1279/* ========================================================== 1280NOTE: This is rather a useless action right now, as the 1281 current driver does not support protocols other than 1282 FR. However, Sangoma has modules for a number of 1283 other protocols in the works. 1284============================================================*/ 1285 case SDLA_PROTOCOL: 1286 if (flp->configured) 1287 return -EALREADY; 1288 1289 switch (ifr->ifr_flags) 1290 { 1291 case ARPHRD_FRAD: 1292 dev->type = ifr->ifr_flags; 1293 break; 1294 default: 1295 return -ENOPROTOOPT; 1296 } 1297 break; 1298 1299 case SDLA_CLEARMEM: 1300 sdla_clear(dev); 1301 break; 1302 1303 case SDLA_WRITEMEM: 1304 case SDLA_READMEM: 1305 if(!capable(CAP_SYS_RAWIO)) 1306 return -EPERM; 1307 return sdla_xfer(dev, ifr->ifr_data, cmd == SDLA_READMEM); 1308 1309 case SDLA_START: 1310 sdla_start(dev); 1311 break; 1312 1313 case SDLA_STOP: 1314 sdla_stop(dev); 1315 break; 1316 1317 default: 1318 return -EOPNOTSUPP; 1319 } 1320 return 0; 1321} 1322 1323static int sdla_change_mtu(struct net_device *dev, int new_mtu) 1324{ 1325 struct frad_local *flp; 1326 1327 flp = netdev_priv(dev); 1328 1329 if (netif_running(dev)) 1330 return -EBUSY; 1331 1332 /* for now, you can't change the MTU! */ 1333 return -EOPNOTSUPP; 1334} 1335 1336static int sdla_set_config(struct net_device *dev, struct ifmap *map) 1337{ 1338 struct frad_local *flp; 1339 int i; 1340 char byte; 1341 unsigned base; 1342 int err = -EINVAL; 1343 1344 flp = netdev_priv(dev); 1345 1346 if (flp->initialized) 1347 return -EINVAL; 1348 1349 for(i=0; i < ARRAY_SIZE(valid_port); i++) 1350 if (valid_port[i] == map->base_addr) 1351 break; 1352 1353 if (i == ARRAY_SIZE(valid_port)) 1354 return -EINVAL; 1355 1356 if (!request_region(map->base_addr, SDLA_IO_EXTENTS, dev->name)){ 1357 pr_warn("io-port 0x%04lx in use\n", dev->base_addr); 1358 return -EINVAL; 1359 } 1360 base = map->base_addr; 1361 1362 /* test for card types, S502A, S502E, S507, S508 */ 1363 /* these tests shut down the card completely, so clear the state */ 1364 flp->type = SDLA_UNKNOWN; 1365 flp->state = 0; 1366 1367 for(i=1;i<SDLA_IO_EXTENTS;i++) 1368 if (inb(base + i) != 0xFF) 1369 break; 1370 1371 if (i == SDLA_IO_EXTENTS) { 1372 outb(SDLA_HALT, base + SDLA_REG_Z80_CONTROL); 1373 if ((inb(base + SDLA_S502_STS) & 0x0F) == 0x08) { 1374 outb(SDLA_S502E_INTACK, base + SDLA_REG_CONTROL); 1375 if ((inb(base + SDLA_S502_STS) & 0x0F) == 0x0C) { 1376 outb(SDLA_HALT, base + SDLA_REG_CONTROL); 1377 flp->type = SDLA_S502E; 1378 goto got_type; 1379 } 1380 } 1381 } 1382 1383 for(byte=inb(base),i=0;i<SDLA_IO_EXTENTS;i++) 1384 if (inb(base + i) != byte) 1385 break; 1386 1387 if (i == SDLA_IO_EXTENTS) { 1388 outb(SDLA_HALT, base + SDLA_REG_CONTROL); 1389 if ((inb(base + SDLA_S502_STS) & 0x7E) == 0x30) { 1390 outb(SDLA_S507_ENABLE, base + SDLA_REG_CONTROL); 1391 if ((inb(base + SDLA_S502_STS) & 0x7E) == 0x32) { 1392 outb(SDLA_HALT, base + SDLA_REG_CONTROL); 1393 flp->type = SDLA_S507; 1394 goto got_type; 1395 } 1396 } 1397 } 1398 1399 outb(SDLA_HALT, base + SDLA_REG_CONTROL); 1400 if ((inb(base + SDLA_S508_STS) & 0x3F) == 0x00) { 1401 outb(SDLA_S508_INTEN, base + SDLA_REG_CONTROL); 1402 if ((inb(base + SDLA_S508_STS) & 0x3F) == 0x10) { 1403 outb(SDLA_HALT, base + SDLA_REG_CONTROL); 1404 flp->type = SDLA_S508; 1405 goto got_type; 1406 } 1407 } 1408 1409 outb(SDLA_S502A_HALT, base + SDLA_REG_CONTROL); 1410 if (inb(base + SDLA_S502_STS) == 0x40) { 1411 outb(SDLA_S502A_START, base + SDLA_REG_CONTROL); 1412 if (inb(base + SDLA_S502_STS) == 0x40) { 1413 outb(SDLA_S502A_INTEN, base + SDLA_REG_CONTROL); 1414 if (inb(base + SDLA_S502_STS) == 0x44) { 1415 outb(SDLA_S502A_START, base + SDLA_REG_CONTROL); 1416 flp->type = SDLA_S502A; 1417 goto got_type; 1418 } 1419 } 1420 } 1421 1422 netdev_notice(dev, "Unknown card type\n"); 1423 err = -ENODEV; 1424 goto fail; 1425 1426got_type: 1427 switch(base) { 1428 case 0x270: 1429 case 0x280: 1430 case 0x380: 1431 case 0x390: 1432 if (flp->type != SDLA_S508 && flp->type != SDLA_S507) 1433 goto fail; 1434 } 1435 1436 switch (map->irq) { 1437 case 2: 1438 if (flp->type != SDLA_S502E) 1439 goto fail; 1440 break; 1441 1442 case 10: 1443 case 11: 1444 case 12: 1445 case 15: 1446 case 4: 1447 if (flp->type != SDLA_S508 && flp->type != SDLA_S507) 1448 goto fail; 1449 break; 1450 case 3: 1451 case 5: 1452 case 7: 1453 if (flp->type == SDLA_S502A) 1454 goto fail; 1455 break; 1456 1457 default: 1458 goto fail; 1459 } 1460 1461 err = -EAGAIN; 1462 if (request_irq(dev->irq, sdla_isr, 0, dev->name, dev)) 1463 goto fail; 1464 1465 if (flp->type == SDLA_S507) { 1466 switch(dev->irq) { 1467 case 3: 1468 flp->state = SDLA_S507_IRQ3; 1469 break; 1470 case 4: 1471 flp->state = SDLA_S507_IRQ4; 1472 break; 1473 case 5: 1474 flp->state = SDLA_S507_IRQ5; 1475 break; 1476 case 7: 1477 flp->state = SDLA_S507_IRQ7; 1478 break; 1479 case 10: 1480 flp->state = SDLA_S507_IRQ10; 1481 break; 1482 case 11: 1483 flp->state = SDLA_S507_IRQ11; 1484 break; 1485 case 12: 1486 flp->state = SDLA_S507_IRQ12; 1487 break; 1488 case 15: 1489 flp->state = SDLA_S507_IRQ15; 1490 break; 1491 } 1492 } 1493 1494 for(i=0; i < ARRAY_SIZE(valid_mem); i++) 1495 if (valid_mem[i] == map->mem_start) 1496 break; 1497 1498 err = -EINVAL; 1499 if (i == ARRAY_SIZE(valid_mem)) 1500 goto fail2; 1501 1502 if (flp->type == SDLA_S502A && (map->mem_start & 0xF000) >> 12 == 0x0E) 1503 goto fail2; 1504 1505 if (flp->type != SDLA_S507 && map->mem_start >> 16 == 0x0B) 1506 goto fail2; 1507 1508 if (flp->type == SDLA_S507 && map->mem_start >> 16 == 0x0D) 1509 goto fail2; 1510 1511 byte = flp->type != SDLA_S508 ? SDLA_8K_WINDOW : 0; 1512 byte |= (map->mem_start & 0xF000) >> (12 + (flp->type == SDLA_S508 ? 1 : 0)); 1513 switch(flp->type) { 1514 case SDLA_S502A: 1515 case SDLA_S502E: 1516 switch (map->mem_start >> 16) { 1517 case 0x0A: 1518 byte |= SDLA_S502_SEG_A; 1519 break; 1520 case 0x0C: 1521 byte |= SDLA_S502_SEG_C; 1522 break; 1523 case 0x0D: 1524 byte |= SDLA_S502_SEG_D; 1525 break; 1526 case 0x0E: 1527 byte |= SDLA_S502_SEG_E; 1528 break; 1529 } 1530 break; 1531 case SDLA_S507: 1532 switch (map->mem_start >> 16) { 1533 case 0x0A: 1534 byte |= SDLA_S507_SEG_A; 1535 break; 1536 case 0x0B: 1537 byte |= SDLA_S507_SEG_B; 1538 break; 1539 case 0x0C: 1540 byte |= SDLA_S507_SEG_C; 1541 break; 1542 case 0x0E: 1543 byte |= SDLA_S507_SEG_E; 1544 break; 1545 } 1546 break; 1547 case SDLA_S508: 1548 switch (map->mem_start >> 16) { 1549 case 0x0A: 1550 byte |= SDLA_S508_SEG_A; 1551 break; 1552 case 0x0C: 1553 byte |= SDLA_S508_SEG_C; 1554 break; 1555 case 0x0D: 1556 byte |= SDLA_S508_SEG_D; 1557 break; 1558 case 0x0E: 1559 byte |= SDLA_S508_SEG_E; 1560 break; 1561 } 1562 break; 1563 } 1564 1565 /* set the memory bits, and enable access */ 1566 outb(byte, base + SDLA_REG_PC_WINDOW); 1567 1568 switch(flp->type) 1569 { 1570 case SDLA_S502E: 1571 flp->state = SDLA_S502E_ENABLE; 1572 break; 1573 case SDLA_S507: 1574 flp->state |= SDLA_MEMEN; 1575 break; 1576 case SDLA_S508: 1577 flp->state = SDLA_MEMEN; 1578 break; 1579 } 1580 outb(flp->state, base + SDLA_REG_CONTROL); 1581 1582 dev->irq = map->irq; 1583 dev->base_addr = base; 1584 dev->mem_start = map->mem_start; 1585 dev->mem_end = dev->mem_start + 0x2000; 1586 flp->initialized = 1; 1587 return 0; 1588 1589fail2: 1590 free_irq(map->irq, dev); 1591fail: 1592 release_region(base, SDLA_IO_EXTENTS); 1593 return err; 1594} 1595 1596static const struct net_device_ops sdla_netdev_ops = { 1597 .ndo_open = sdla_open, 1598 .ndo_stop = sdla_close, 1599 .ndo_do_ioctl = sdla_ioctl, 1600 .ndo_set_config = sdla_set_config, 1601 .ndo_start_xmit = sdla_transmit, 1602 .ndo_change_mtu = sdla_change_mtu, 1603}; 1604 1605static void setup_sdla(struct net_device *dev) 1606{ 1607 struct frad_local *flp = netdev_priv(dev); 1608 1609 netdev_boot_setup_check(dev); 1610 1611 dev->netdev_ops = &sdla_netdev_ops; 1612 dev->flags = 0; 1613 dev->type = 0xFFFF; 1614 dev->hard_header_len = 0; 1615 dev->addr_len = 0; 1616 dev->mtu = SDLA_MAX_MTU; 1617 1618 flp->activate = sdla_activate; 1619 flp->deactivate = sdla_deactivate; 1620 flp->assoc = sdla_assoc; 1621 flp->deassoc = sdla_deassoc; 1622 flp->dlci_conf = sdla_dlci_conf; 1623 1624 init_timer(&flp->timer); 1625 flp->timer.expires = 1; 1626 flp->timer.data = (unsigned long) dev; 1627 flp->timer.function = sdla_poll; 1628} 1629 1630static struct net_device *sdla; 1631 1632static int __init init_sdla(void) 1633{ 1634 int err; 1635 1636 printk("%s.\n", version); 1637 1638 sdla = alloc_netdev(sizeof(struct frad_local), "sdla0", setup_sdla); 1639 if (!sdla) 1640 return -ENOMEM; 1641 1642 err = register_netdev(sdla); 1643 if (err) 1644 free_netdev(sdla); 1645 1646 return err; 1647} 1648 1649static void __exit exit_sdla(void) 1650{ 1651 struct frad_local *flp = netdev_priv(sdla); 1652 1653 unregister_netdev(sdla); 1654 if (flp->initialized) { 1655 free_irq(sdla->irq, sdla); 1656 release_region(sdla->base_addr, SDLA_IO_EXTENTS); 1657 } 1658 del_timer_sync(&flp->timer); 1659 free_netdev(sdla); 1660} 1661 1662MODULE_LICENSE("GPL"); 1663 1664module_init(init_sdla); 1665module_exit(exit_sdla); 1666