1/* ibmtr.c: A shared-memory IBM Token Ring 16/4 driver for linux 2 * 3 * Written 1993 by Mark Swanson and Peter De Schrijver. 4 * This software may be used and distributed according to the terms 5 * of the GNU General Public License, incorporated herein by reference. 6 * 7 * This device driver should work with Any IBM Token Ring Card that does 8 * not use DMA. 9 * 10 * I used Donald Becker's (becker@scyld.com) device driver work 11 * as a base for most of my initial work. 12 * 13 * Changes by Peter De Schrijver 14 * (Peter.Deschrijver@linux.cc.kuleuven.ac.be) : 15 * 16 * + changed name to ibmtr.c in anticipation of other tr boards. 17 * + changed reset code and adapter open code. 18 * + added SAP open code. 19 * + a first attempt to write interrupt, transmit and receive routines. 20 * 21 * Changes by David W. Morris (dwm@shell.portal.com) : 22 * 941003 dwm: - Restructure tok_probe for multiple adapters, devices. 23 * + Add comments, misc reorg for clarity. 24 * + Flatten interrupt handler levels. 25 * 26 * Changes by Farzad Farid (farzy@zen.via.ecp.fr) 27 * and Pascal Andre (andre@chimay.via.ecp.fr) (March 9 1995) : 28 * + multi ring support clean up. 29 * + RFC1042 compliance enhanced. 30 * 31 * Changes by Pascal Andre (andre@chimay.via.ecp.fr) (September 7 1995) : 32 * + bug correction in tr_tx 33 * + removed redundant information display 34 * + some code reworking 35 * 36 * Changes by Michel Lespinasse (walken@via.ecp.fr), 37 * Yann Doussot (doussot@via.ecp.fr) and Pascal Andre (andre@via.ecp.fr) 38 * (February 18, 1996) : 39 * + modified shared memory and mmio access port the driver to 40 * alpha platform (structure access -> readb/writeb) 41 * 42 * Changes by Steve Kipisz (bungy@ibm.net or kipisz@vnet.ibm.com) 43 * (January 18 1996): 44 * + swapped WWOR and WWCR in ibmtr.h 45 * + moved some init code from tok_probe into trdev_init. The 46 * PCMCIA code can call trdev_init to complete initializing 47 * the driver. 48 * + added -DPCMCIA to support PCMCIA 49 * + detecting PCMCIA Card Removal in interrupt handler. If 50 * ISRP is FF, then a PCMCIA card has been removed 51 * 10/2000 Burt needed a new method to avoid crashing the OS 52 * 53 * Changes by Paul Norton (pnorton@cts.com) : 54 * + restructured the READ.LOG logic to prevent the transmit SRB 55 * from being rudely overwritten before the transmit cycle is 56 * complete. (August 15 1996) 57 * + completed multiple adapter support. (November 20 1996) 58 * + implemented csum_partial_copy in tr_rx and increased receive 59 * buffer size and count. Minor fixes. (March 15, 1997) 60 * 61 * Changes by Christopher Turcksin <wabbit@rtfc.demon.co.uk> 62 * + Now compiles ok as a module again. 63 * 64 * Changes by Paul Norton (pnorton@ieee.org) : 65 * + moved the header manipulation code in tr_tx and tr_rx to 66 * net/802/tr.c. (July 12 1997) 67 * + add retry and timeout on open if cable disconnected. (May 5 1998) 68 * + lifted 2000 byte mtu limit. now depends on shared-RAM size. 69 * May 25 1998) 70 * + can't allocate 2k recv buff at 8k shared-RAM. (20 October 1998) 71 * 72 * Changes by Joel Sloan (jjs@c-me.com) : 73 * + disable verbose debug messages by default - to enable verbose 74 * debugging, edit the IBMTR_DEBUG_MESSAGES define below 75 * 76 * Changes by Mike Phillips <phillim@amtrak.com> : 77 * + Added extra #ifdef's to work with new PCMCIA Token Ring Code. 78 * The PCMCIA code now just sets up the card so it can be recognized 79 * by ibmtr_probe. Also checks allocated memory vs. on-board memory 80 * for correct figure to use. 81 * 82 * Changes by Tim Hockin (thockin@isunix.it.ilstu.edu) : 83 * + added spinlocks for SMP sanity (10 March 1999) 84 * 85 * Changes by Jochen Friedrich to enable RFC1469 Option 2 multicasting 86 * i.e. using functional address C0 00 00 04 00 00 to transmit and 87 * receive multicast packets. 88 * 89 * Changes by Mike Sullivan (based on original sram patch by Dave Grothe 90 * to support windowing into on adapter shared ram. 91 * i.e. Use LANAID to setup a PnP configuration with 16K RAM. Paging 92 * will shift this 16K window over the entire available shared RAM. 93 * 94 * Changes by Peter De Schrijver (p2@mind.be) : 95 * + fixed a problem with PCMCIA card removal 96 * 97 * Change by Mike Sullivan et al.: 98 * + added turbo card support. No need to use lanaid to configure 99 * the adapter into isa compatiblity mode. 100 * 101 * Changes by Burt Silverman to allow the computer to behave nicely when 102 * a cable is pulled or not in place, or a PCMCIA card is removed hot. 103 */ 104 105/* change the define of IBMTR_DEBUG_MESSAGES to a nonzero value 106in the event that chatty debug messages are desired - jjs 12/30/98 */ 107 108#define IBMTR_DEBUG_MESSAGES 0 109 110#include <linux/module.h> 111 112#ifdef PCMCIA /* required for ibmtr_cs.c to build */ 113#undef MODULE /* yes, really */ 114#undef ENABLE_PAGING 115#else 116#define ENABLE_PAGING 1 117#endif 118 119#define FALSE 0 120#define TRUE (!FALSE) 121 122/* changes the output format of driver initialization */ 123#define TR_VERBOSE 0 124 125/* some 95 OS send many non UI frame; this allow removing the warning */ 126#define TR_FILTERNONUI 1 127 128#include <linux/ioport.h> 129#include <linux/netdevice.h> 130#include <linux/ip.h> 131#include <linux/trdevice.h> 132#include <linux/ibmtr.h> 133 134#include <net/checksum.h> 135 136#include <asm/io.h> 137 138#define DPRINTK(format, args...) printk("%s: " format, dev->name , ## args) 139#define DPRINTD(format, args...) DummyCall("%s: " format, dev->name , ## args) 140 141/* version and credits */ 142#ifndef PCMCIA 143static char version[] __devinitdata = 144 "\nibmtr.c: v1.3.57 8/ 7/94 Peter De Schrijver and Mark Swanson\n" 145 " v2.1.125 10/20/98 Paul Norton <pnorton@ieee.org>\n" 146 " v2.2.0 12/30/98 Joel Sloan <jjs@c-me.com>\n" 147 " v2.2.1 02/08/00 Mike Sullivan <sullivam@us.ibm.com>\n" 148 " v2.2.2 07/27/00 Burt Silverman <burts@us.ibm.com>\n" 149 " v2.4.0 03/01/01 Mike Sullivan <sullivan@us.ibm.com>\n"; 150#endif 151 152/* this allows displaying full adapter information */ 153 154static char *channel_def[] __devinitdata = { "ISA", "MCA", "ISA P&P" }; 155 156static char pcchannelid[] __devinitdata = { 157 0x05, 0x00, 0x04, 0x09, 158 0x04, 0x03, 0x04, 0x0f, 159 0x03, 0x06, 0x03, 0x01, 160 0x03, 0x01, 0x03, 0x00, 161 0x03, 0x09, 0x03, 0x09, 162 0x03, 0x00, 0x02, 0x00 163}; 164 165static char mcchannelid[] __devinitdata = { 166 0x04, 0x0d, 0x04, 0x01, 167 0x05, 0x02, 0x05, 0x03, 168 0x03, 0x06, 0x03, 0x03, 169 0x05, 0x08, 0x03, 0x04, 170 0x03, 0x05, 0x03, 0x01, 171 0x03, 0x08, 0x02, 0x00 172}; 173 174static char __devinit *adapter_def(char type) 175{ 176 switch (type) { 177 case 0xF: return "PC Adapter | PC Adapter II | Adapter/A"; 178 case 0xE: return "16/4 Adapter | 16/4 Adapter/A (long)"; 179 case 0xD: return "16/4 Adapter/A (short) | 16/4 ISA-16 Adapter"; 180 case 0xC: return "Auto 16/4 Adapter"; 181 default: return "adapter (unknown type)"; 182 }; 183}; 184 185#define TRC_INIT 0x01 /* Trace initialization & PROBEs */ 186#define TRC_INITV 0x02 /* verbose init trace points */ 187static unsigned char ibmtr_debug_trace = 0; 188 189static int ibmtr_probe1(struct net_device *dev, int ioaddr); 190static unsigned char get_sram_size(struct tok_info *adapt_info); 191static int trdev_init(struct net_device *dev); 192static int tok_open(struct net_device *dev); 193static int tok_init_card(struct net_device *dev); 194static void tok_open_adapter(unsigned long dev_addr); 195static void open_sap(unsigned char type, struct net_device *dev); 196static void tok_set_multicast_list(struct net_device *dev); 197static int tok_send_packet(struct sk_buff *skb, struct net_device *dev); 198static int tok_close(struct net_device *dev); 199static irqreturn_t tok_interrupt(int irq, void *dev_id); 200static void initial_tok_int(struct net_device *dev); 201static void tr_tx(struct net_device *dev); 202static void tr_rx(struct net_device *dev); 203static void ibmtr_reset_timer(struct timer_list*tmr,struct net_device *dev); 204static void tok_rerun(unsigned long dev_addr); 205static void ibmtr_readlog(struct net_device *dev); 206static struct net_device_stats *tok_get_stats(struct net_device *dev); 207static int ibmtr_change_mtu(struct net_device *dev, int mtu); 208static void find_turbo_adapters(int *iolist); 209 210static int ibmtr_portlist[IBMTR_MAX_ADAPTERS+1] __devinitdata = { 211 0xa20, 0xa24, 0, 0, 0 212}; 213static int __devinitdata turbo_io[IBMTR_MAX_ADAPTERS] = {0}; 214static int __devinitdata turbo_irq[IBMTR_MAX_ADAPTERS] = {0}; 215static int __devinitdata turbo_searched = 0; 216 217#ifndef PCMCIA 218static __u32 ibmtr_mem_base __devinitdata = 0xd0000; 219#endif 220 221static void __devinit PrtChanID(char *pcid, short stride) 222{ 223 short i, j; 224 for (i = 0, j = 0; i < 24; i++, j += stride) 225 printk("%1x", ((int) pcid[j]) & 0x0f); 226 printk("\n"); 227} 228 229static void __devinit HWPrtChanID(void __iomem *pcid, short stride) 230{ 231 short i, j; 232 for (i = 0, j = 0; i < 24; i++, j += stride) 233 printk("%1x", ((int) readb(pcid + j)) & 0x0f); 234 printk("\n"); 235} 236 237/* We have to ioremap every checked address, because isa_readb is 238 * going away. 239 */ 240 241static void __devinit find_turbo_adapters(int *iolist) 242{ 243 int ram_addr; 244 int index=0; 245 void __iomem *chanid; 246 int found_turbo=0; 247 unsigned char *tchanid, ctemp; 248 int i, j; 249 unsigned long jif; 250 void __iomem *ram_mapped ; 251 252 if (turbo_searched == 1) return; 253 turbo_searched=1; 254 for (ram_addr=0xC0000; ram_addr < 0xE0000; ram_addr+=0x2000) { 255 256 __u32 intf_tbl=0; 257 258 found_turbo=1; 259 ram_mapped = ioremap((u32)ram_addr,0x1fff) ; 260 if (ram_mapped==NULL) 261 continue ; 262 chanid=(CHANNEL_ID + ram_mapped); 263 tchanid=pcchannelid; 264 ctemp=readb(chanid) & 0x0f; 265 if (ctemp != *tchanid) continue; 266 for (i=2,j=1; i<=46; i=i+2,j++) { 267 if ((readb(chanid+i) & 0x0f) != tchanid[j]){ 268 found_turbo=0; 269 break; 270 } 271 } 272 if (!found_turbo) continue; 273 274 writeb(0x90, ram_mapped+0x1E01); 275 for(i=2; i<0x0f; i++) { 276 writeb(0x00, ram_mapped+0x1E01+i); 277 } 278 writeb(0x00, ram_mapped+0x1E01); 279 for(jif=jiffies+TR_BUSY_INTERVAL; time_before_eq(jiffies,jif);); 280 intf_tbl=ntohs(readw(ram_mapped+ACA_OFFSET+ACA_RW+WRBR_EVEN)); 281 if (intf_tbl) { 282#if IBMTR_DEBUG_MESSAGES 283 printk("ibmtr::find_turbo_adapters, Turbo found at " 284 "ram_addr %x\n",ram_addr); 285 printk("ibmtr::find_turbo_adapters, interface_table "); 286 for(i=0; i<6; i++) { 287 printk("%x:",readb(ram_addr+intf_tbl+i)); 288 } 289 printk("\n"); 290#endif 291 turbo_io[index]=ntohs(readw(ram_mapped+intf_tbl+4)); 292 turbo_irq[index]=readb(ram_mapped+intf_tbl+3); 293 outb(0, turbo_io[index] + ADAPTRESET); 294 for(jif=jiffies+TR_RST_TIME;time_before_eq(jiffies,jif);); 295 outb(0, turbo_io[index] + ADAPTRESETREL); 296 index++; 297 continue; 298 } 299#if IBMTR_DEBUG_MESSAGES 300 printk("ibmtr::find_turbo_adapters, ibmtr card found at" 301 " %x but not a Turbo model\n",ram_addr); 302#endif 303 iounmap(ram_mapped) ; 304 } /* for */ 305 for(i=0; i<IBMTR_MAX_ADAPTERS; i++) { 306 if(!turbo_io[i]) break; 307 for (j=0; j<IBMTR_MAX_ADAPTERS; j++) { 308 if ( iolist[j] && iolist[j] != turbo_io[i]) continue; 309 iolist[j]=turbo_io[i]; 310 break; 311 } 312 } 313} 314 315static void ibmtr_cleanup_card(struct net_device *dev) 316{ 317 if (dev->base_addr) { 318 outb(0,dev->base_addr+ADAPTRESET); 319 320 schedule_timeout_uninterruptible(TR_RST_TIME); /* wait 50ms */ 321 322 outb(0,dev->base_addr+ADAPTRESETREL); 323 } 324 325#ifndef PCMCIA 326 free_irq(dev->irq, dev); 327 release_region(dev->base_addr, IBMTR_IO_EXTENT); 328 329 { 330 struct tok_info *ti = (struct tok_info *) dev->priv; 331 iounmap(ti->mmio); 332 iounmap(ti->sram_virt); 333 } 334#endif 335} 336 337/**************************************************************************** 338 * ibmtr_probe(): Routine specified in the network device structure 339 * to probe for an IBM Token Ring Adapter. Routine outline: 340 * I. Interrogate hardware to determine if an adapter exists 341 * and what the speeds and feeds are 342 * II. Setup data structures to control execution based upon 343 * adapter characteristics. 344 * 345 * We expect ibmtr_probe to be called once for each device entry 346 * which references it. 347 ****************************************************************************/ 348 349static int __devinit ibmtr_probe(struct net_device *dev) 350{ 351 int i; 352 int base_addr = dev->base_addr; 353 354 if (base_addr && base_addr <= 0x1ff) /* Don't probe at all. */ 355 return -ENXIO; 356 if (base_addr > 0x1ff) { /* Check a single specified location. */ 357 if (!ibmtr_probe1(dev, base_addr)) return 0; 358 return -ENODEV; 359 } 360 find_turbo_adapters(ibmtr_portlist); 361 for (i = 0; ibmtr_portlist[i]; i++) { 362 int ioaddr = ibmtr_portlist[i]; 363 364 if (!ibmtr_probe1(dev, ioaddr)) return 0; 365 } 366 return -ENODEV; 367} 368 369int __devinit ibmtr_probe_card(struct net_device *dev) 370{ 371 int err = ibmtr_probe(dev); 372 if (!err) { 373 err = register_netdev(dev); 374 if (err) 375 ibmtr_cleanup_card(dev); 376 } 377 return err; 378} 379 380/*****************************************************************************/ 381 382static int __devinit ibmtr_probe1(struct net_device *dev, int PIOaddr) 383{ 384 385 unsigned char segment, intr=0, irq=0, i, j, cardpresent=NOTOK, temp=0; 386 void __iomem * t_mmio = NULL; 387 struct tok_info *ti = dev->priv; 388 void __iomem *cd_chanid; 389 unsigned char *tchanid, ctemp; 390#ifndef PCMCIA 391 unsigned char t_irq=0; 392 unsigned long timeout; 393 static int version_printed; 394#endif 395 396 /* Query the adapter PIO base port which will return 397 * indication of where MMIO was placed. We also have a 398 * coded interrupt number. 399 */ 400 segment = inb(PIOaddr); 401 if (segment < 0x40 || segment > 0xe0) { 402 /* Out of range values so we'll assume non-existent IO device 403 * but this is not necessarily a problem, esp if a turbo 404 * adapter is being used. */ 405#if IBMTR_DEBUG_MESSAGES 406 DPRINTK("ibmtr_probe1(): unhappy that inb(0x%X) == 0x%X, " 407 "Hardware Problem?\n",PIOaddr,segment); 408#endif 409 return -ENODEV; 410 } 411 /* 412 * Compute the linear base address of the MMIO area 413 * as LINUX doesn't care about segments 414 */ 415 t_mmio = ioremap(((__u32) (segment & 0xfc) << 11) + 0x80000,2048); 416 if (!t_mmio) { 417 DPRINTK("Cannot remap mmiobase memory area") ; 418 return -ENODEV ; 419 } 420 intr = segment & 0x03; /* low bits is coded interrupt # */ 421 if (ibmtr_debug_trace & TRC_INIT) 422 DPRINTK("PIOaddr: %4hx seg/intr: %2x mmio base: %p intr: %d\n" 423 , PIOaddr, (int) segment, t_mmio, (int) intr); 424 425 /* 426 * Now we will compare expected 'channelid' strings with 427 * what we is there to learn of ISA/MCA or not TR card 428 */ 429#ifdef PCMCIA 430 iounmap(t_mmio); 431 t_mmio = ti->mmio; /*BMS to get virtual address */ 432 irq = ti->irq; /*BMS to display the irq! */ 433#endif 434 cd_chanid = (CHANNEL_ID + t_mmio); /* for efficiency */ 435 tchanid = pcchannelid; 436 cardpresent = TR_ISA; /* try ISA */ 437 438 /* Suboptimize knowing first byte different */ 439 ctemp = readb(cd_chanid) & 0x0f; 440 if (ctemp != *tchanid) { /* NOT ISA card, try MCA */ 441 tchanid = mcchannelid; 442 cardpresent = TR_MCA; 443 if (ctemp != *tchanid) /* Neither ISA nor MCA */ 444 cardpresent = NOTOK; 445 } 446 if (cardpresent != NOTOK) { 447 /* Know presumed type, try rest of ID */ 448 for (i = 2, j = 1; i <= 46; i = i + 2, j++) { 449 if( (readb(cd_chanid+i)&0x0f) == tchanid[j]) continue; 450 /* match failed, not TR card */ 451 cardpresent = NOTOK; 452 break; 453 } 454 } 455 /* 456 * If we have an ISA board check for the ISA P&P version, 457 * as it has different IRQ settings 458 */ 459 if (cardpresent == TR_ISA && (readb(AIPFID + t_mmio) == 0x0e)) 460 cardpresent = TR_ISAPNP; 461 if (cardpresent == NOTOK) { /* "channel_id" did not match, report */ 462 if (!(ibmtr_debug_trace & TRC_INIT)) { 463#ifndef PCMCIA 464 iounmap(t_mmio); 465#endif 466 return -ENODEV; 467 } 468 DPRINTK( "Channel ID string not found for PIOaddr: %4hx\n", 469 PIOaddr); 470 DPRINTK("Expected for ISA: "); 471 PrtChanID(pcchannelid, 1); 472 DPRINTK(" found: "); 473/* BMS Note that this can be misleading, when hardware is flaky, because you 474 are reading it a second time here. So with my flaky hardware, I'll see my- 475 self in this block, with the HW ID matching the ISA ID exactly! */ 476 HWPrtChanID(cd_chanid, 2); 477 DPRINTK("Expected for MCA: "); 478 PrtChanID(mcchannelid, 1); 479 } 480 /* Now, setup some of the pl0 buffers for this driver.. */ 481 /* If called from PCMCIA, it is already set up, so no need to 482 waste the memory, just use the existing structure */ 483#ifndef PCMCIA 484 ti->mmio = t_mmio; 485 for (i = 0; i < IBMTR_MAX_ADAPTERS; i++) { 486 if (turbo_io[i] != PIOaddr) 487 continue; 488#if IBMTR_DEBUG_MESSAGES 489 printk("ibmtr::tr_probe1, setting PIOaddr %x to Turbo\n", 490 PIOaddr); 491#endif 492 ti->turbo = 1; 493 t_irq = turbo_irq[i]; 494 } 495#endif /* !PCMCIA */ 496 ti->readlog_pending = 0; 497 init_waitqueue_head(&ti->wait_for_reset); 498 499 /* if PCMCIA, the card can be recognized as either TR_ISA or TR_ISAPNP 500 * depending which card is inserted. */ 501 502#ifndef PCMCIA 503 switch (cardpresent) { 504 case TR_ISA: 505 if (intr == 0) irq = 9; /* irq2 really is irq9 */ 506 if (intr == 1) irq = 3; 507 if (intr == 2) irq = 6; 508 if (intr == 3) irq = 7; 509 ti->adapter_int_enable = PIOaddr + ADAPTINTREL; 510 break; 511 case TR_MCA: 512 if (intr == 0) irq = 9; 513 if (intr == 1) irq = 3; 514 if (intr == 2) irq = 10; 515 if (intr == 3) irq = 11; 516 ti->global_int_enable = 0; 517 ti->adapter_int_enable = 0; 518 ti->sram_phys=(__u32)(inb(PIOaddr+ADAPTRESETREL) & 0xfe) << 12; 519 break; 520 case TR_ISAPNP: 521 if (!t_irq) { 522 if (intr == 0) irq = 9; 523 if (intr == 1) irq = 3; 524 if (intr == 2) irq = 10; 525 if (intr == 3) irq = 11; 526 } else 527 irq=t_irq; 528 timeout = jiffies + TR_SPIN_INTERVAL; 529 while (!readb(ti->mmio + ACA_OFFSET + ACA_RW + RRR_EVEN)){ 530 if (!time_after(jiffies, timeout)) continue; 531 DPRINTK( "Hardware timeout during initialization.\n"); 532 iounmap(t_mmio); 533 return -ENODEV; 534 } 535 ti->sram_phys = 536 ((__u32)readb(ti->mmio+ACA_OFFSET+ACA_RW+RRR_EVEN)<<12); 537 ti->adapter_int_enable = PIOaddr + ADAPTINTREL; 538 break; 539 } /*end switch (cardpresent) */ 540#endif /*not PCMCIA */ 541 542 if (ibmtr_debug_trace & TRC_INIT) { /* just report int */ 543 DPRINTK("irq=%d", irq); 544 printk(", sram_phys=0x%x", ti->sram_phys); 545 if(ibmtr_debug_trace&TRC_INITV){ /* full chat in verbose only */ 546 DPRINTK(", ti->mmio=%p", ti->mmio); 547 printk(", segment=%02X", segment); 548 } 549 printk(".\n"); 550 } 551 552 /* Get hw address of token ring card */ 553 j = 0; 554 for (i = 0; i < 0x18; i = i + 2) { 555 /* technical reference states to do this */ 556 temp = readb(ti->mmio + AIP + i) & 0x0f; 557 ti->hw_address[j] = temp; 558 if (j & 1) 559 dev->dev_addr[(j / 2)] = 560 ti->hw_address[j]+ (ti->hw_address[j - 1] << 4); 561 ++j; 562 } 563 /* get Adapter type: 'F' = Adapter/A, 'E' = 16/4 Adapter II,... */ 564 ti->adapter_type = readb(ti->mmio + AIPADAPTYPE); 565 566 /* get Data Rate: F=4Mb, E=16Mb, D=4Mb & 16Mb ?? */ 567 ti->data_rate = readb(ti->mmio + AIPDATARATE); 568 569 /* Get Early Token Release support?: F=no, E=4Mb, D=16Mb, C=4&16Mb */ 570 ti->token_release = readb(ti->mmio + AIPEARLYTOKEN); 571 572 /* How much shared RAM is on adapter ? */ 573 if (ti->turbo) { 574 ti->avail_shared_ram=127; 575 } else { 576 ti->avail_shared_ram = get_sram_size(ti);/*in 512 byte units */ 577 } 578 /* We need to set or do a bunch of work here based on previous results*/ 579 /* Support paging? What sizes?: F=no, E=16k, D=32k, C=16 & 32k */ 580 ti->shared_ram_paging = readb(ti->mmio + AIPSHRAMPAGE); 581 582 /* Available DHB 4Mb size: F=2048, E=4096, D=4464 */ 583 switch (readb(ti->mmio + AIP4MBDHB)) { 584 case 0xe: ti->dhb_size4mb = 4096; break; 585 case 0xd: ti->dhb_size4mb = 4464; break; 586 default: ti->dhb_size4mb = 2048; break; 587 } 588 589 /* Available DHB 16Mb size: F=2048, E=4096, D=8192, C=16384, B=17960 */ 590 switch (readb(ti->mmio + AIP16MBDHB)) { 591 case 0xe: ti->dhb_size16mb = 4096; break; 592 case 0xd: ti->dhb_size16mb = 8192; break; 593 case 0xc: ti->dhb_size16mb = 16384; break; 594 case 0xb: ti->dhb_size16mb = 17960; break; 595 default: ti->dhb_size16mb = 2048; break; 596 } 597 598 /* We must figure out how much shared memory space this adapter 599 * will occupy so that if there are two adapters we can fit both 600 * in. Given a choice, we will limit this adapter to 32K. The 601 * maximum space will will use for two adapters is 64K so if the 602 * adapter we are working on demands 64K (it also doesn't support 603 * paging), then only one adapter can be supported. 604 */ 605 606 /* 607 * determine how much of total RAM is mapped into PC space 608 */ 609 ti->mapped_ram_size= /*sixteen to onehundredtwentyeight 512byte blocks*/ 610 1<< ((readb(ti->mmio+ACA_OFFSET+ACA_RW+RRR_ODD) >> 2 & 0x03) + 4); 611 ti->page_mask = 0; 612 if (ti->turbo) ti->page_mask=0xf0; 613 else if (ti->shared_ram_paging == 0xf); /* No paging in adapter */ 614 else { 615#ifdef ENABLE_PAGING 616 unsigned char pg_size = 0; 617 /* BMS: page size: PCMCIA, use configuration register; 618 ISAPNP, use LANAIDC config tool from www.ibm.com */ 619 switch (ti->shared_ram_paging) { 620 case 0xf: 621 break; 622 case 0xe: 623 ti->page_mask = (ti->mapped_ram_size == 32) ? 0xc0 : 0; 624 pg_size = 32; /* 16KB page size */ 625 break; 626 case 0xd: 627 ti->page_mask = (ti->mapped_ram_size == 64) ? 0x80 : 0; 628 pg_size = 64; /* 32KB page size */ 629 break; 630 case 0xc: 631 switch (ti->mapped_ram_size) { 632 case 32: 633 ti->page_mask = 0xc0; 634 pg_size = 32; 635 break; 636 case 64: 637 ti->page_mask = 0x80; 638 pg_size = 64; 639 break; 640 } 641 break; 642 default: 643 DPRINTK("Unknown shared ram paging info %01X\n", 644 ti->shared_ram_paging); 645 iounmap(t_mmio); 646 return -ENODEV; 647 break; 648 } /*end switch shared_ram_paging */ 649 650 if (ibmtr_debug_trace & TRC_INIT) 651 DPRINTK("Shared RAM paging code: %02X, " 652 "mapped RAM size: %dK, shared RAM size: %dK, " 653 "page mask: %02X\n:", 654 ti->shared_ram_paging, ti->mapped_ram_size / 2, 655 ti->avail_shared_ram / 2, ti->page_mask); 656#endif /*ENABLE_PAGING */ 657 } 658 659#ifndef PCMCIA 660 /* finish figuring the shared RAM address */ 661 if (cardpresent == TR_ISA) { 662 static __u32 ram_bndry_mask[] = 663 { 0xffffe000, 0xffffc000, 0xffff8000, 0xffff0000 }; 664 __u32 new_base, rrr_32, chk_base, rbm; 665 666 rrr_32=readb(ti->mmio+ACA_OFFSET+ACA_RW+RRR_ODD) >> 2 & 0x03; 667 rbm = ram_bndry_mask[rrr_32]; 668 new_base = (ibmtr_mem_base + (~rbm)) & rbm;/* up to boundary */ 669 chk_base = new_base + (ti->mapped_ram_size << 9); 670 if (chk_base > (ibmtr_mem_base + IBMTR_SHARED_RAM_SIZE)) { 671 DPRINTK("Shared RAM for this adapter (%05x) exceeds " 672 "driver limit (%05x), adapter not started.\n", 673 chk_base, ibmtr_mem_base + IBMTR_SHARED_RAM_SIZE); 674 iounmap(t_mmio); 675 return -ENODEV; 676 } else { /* seems cool, record what we have figured out */ 677 ti->sram_base = new_base >> 12; 678 ibmtr_mem_base = chk_base; 679 } 680 } 681 else ti->sram_base = ti->sram_phys >> 12; 682 683 /* The PCMCIA has already got the interrupt line and the io port, 684 so no chance of anybody else getting it - MLP */ 685 if (request_irq(dev->irq = irq, &tok_interrupt, 0, "ibmtr", dev) != 0) { 686 DPRINTK("Could not grab irq %d. Halting Token Ring driver.\n", 687 irq); 688 iounmap(t_mmio); 689 return -ENODEV; 690 } 691 /*?? Now, allocate some of the PIO PORTs for this driver.. */ 692 /* record PIOaddr range as busy */ 693 if (!request_region(PIOaddr, IBMTR_IO_EXTENT, "ibmtr")) { 694 DPRINTK("Could not grab PIO range. Halting driver.\n"); 695 free_irq(dev->irq, dev); 696 iounmap(t_mmio); 697 return -EBUSY; 698 } 699 700 if (!version_printed++) { 701 printk(version); 702 } 703#endif /* !PCMCIA */ 704 DPRINTK("%s %s found\n", 705 channel_def[cardpresent - 1], adapter_def(ti->adapter_type)); 706 DPRINTK("using irq %d, PIOaddr %hx, %dK shared RAM.\n", 707 irq, PIOaddr, ti->mapped_ram_size / 2); 708 DPRINTK("Hardware address : %02X:%02X:%02X:%02X:%02X:%02X\n", 709 dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2], 710 dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]); 711 if (ti->page_mask) 712 DPRINTK("Shared RAM paging enabled. " 713 "Page size: %uK Shared Ram size %dK\n", 714 ((ti->page_mask^0xff)+1) >>2, ti->avail_shared_ram / 2); 715 else 716 DPRINTK("Shared RAM paging disabled. ti->page_mask %x\n", 717 ti->page_mask); 718 719 /* Calculate the maximum DHB we can use */ 720 /* two cases where avail_shared_ram doesn't equal mapped_ram_size: 721 1. avail_shared_ram is 127 but mapped_ram_size is 128 (typical) 722 2. user has configured adapter for less than avail_shared_ram 723 but is not using paging (she should use paging, I believe) 724 */ 725 if (!ti->page_mask) { 726 ti->avail_shared_ram= 727 min(ti->mapped_ram_size,ti->avail_shared_ram); 728 } 729 730 switch (ti->avail_shared_ram) { 731 case 16: /* 8KB shared RAM */ 732 ti->dhb_size4mb = min(ti->dhb_size4mb, (unsigned short)2048); 733 ti->rbuf_len4 = 1032; 734 ti->rbuf_cnt4=2; 735 ti->dhb_size16mb = min(ti->dhb_size16mb, (unsigned short)2048); 736 ti->rbuf_len16 = 1032; 737 ti->rbuf_cnt16=2; 738 break; 739 case 32: /* 16KB shared RAM */ 740 ti->dhb_size4mb = min(ti->dhb_size4mb, (unsigned short)4464); 741 ti->rbuf_len4 = 1032; 742 ti->rbuf_cnt4=4; 743 ti->dhb_size16mb = min(ti->dhb_size16mb, (unsigned short)4096); 744 ti->rbuf_len16 = 1032; /*1024 usable */ 745 ti->rbuf_cnt16=4; 746 break; 747 case 64: /* 32KB shared RAM */ 748 ti->dhb_size4mb = min(ti->dhb_size4mb, (unsigned short)4464); 749 ti->rbuf_len4 = 1032; 750 ti->rbuf_cnt4=6; 751 ti->dhb_size16mb = min(ti->dhb_size16mb, (unsigned short)10240); 752 ti->rbuf_len16 = 1032; 753 ti->rbuf_cnt16=6; 754 break; 755 case 127: /* 63.5KB shared RAM */ 756 ti->dhb_size4mb = min(ti->dhb_size4mb, (unsigned short)4464); 757 ti->rbuf_len4 = 1032; 758 ti->rbuf_cnt4=6; 759 ti->dhb_size16mb = min(ti->dhb_size16mb, (unsigned short)16384); 760 ti->rbuf_len16 = 1032; 761 ti->rbuf_cnt16=16; 762 break; 763 case 128: /* 64KB shared RAM */ 764 ti->dhb_size4mb = min(ti->dhb_size4mb, (unsigned short)4464); 765 ti->rbuf_len4 = 1032; 766 ti->rbuf_cnt4=6; 767 ti->dhb_size16mb = min(ti->dhb_size16mb, (unsigned short)17960); 768 ti->rbuf_len16 = 1032; 769 ti->rbuf_cnt16=16; 770 break; 771 default: 772 ti->dhb_size4mb = 2048; 773 ti->rbuf_len4 = 1032; 774 ti->rbuf_cnt4=2; 775 ti->dhb_size16mb = 2048; 776 ti->rbuf_len16 = 1032; 777 ti->rbuf_cnt16=2; 778 break; 779 } 780 /* this formula is not smart enough for the paging case 781 ti->rbuf_cnt<x> = (ti->avail_shared_ram * BLOCKSZ - ADAPT_PRIVATE - 782 ARBLENGTH - SSBLENGTH - DLC_MAX_SAP * SAPLENGTH - 783 DLC_MAX_STA * STALENGTH - ti->dhb_size<x>mb * NUM_DHB - 784 SRBLENGTH - ASBLENGTH) / ti->rbuf_len<x>; 785 */ 786 ti->maxmtu16 = (ti->rbuf_len16 - 8) * ti->rbuf_cnt16 - TR_HLEN; 787 ti->maxmtu4 = (ti->rbuf_len4 - 8) * ti->rbuf_cnt4 - TR_HLEN; 788 /*BMS assuming 18 bytes of Routing Information (usually works) */ 789 DPRINTK("Maximum Receive Internet Protocol MTU 16Mbps: %d, 4Mbps: %d\n", 790 ti->maxmtu16, ti->maxmtu4); 791 792 dev->base_addr = PIOaddr; /* set the value for device */ 793 dev->mem_start = ti->sram_base << 12; 794 dev->mem_end = dev->mem_start + (ti->mapped_ram_size << 9) - 1; 795 trdev_init(dev); 796 return 0; /* Return 0 to indicate we have found a Token Ring card. */ 797} /*ibmtr_probe1() */ 798 799/*****************************************************************************/ 800 801/* query the adapter for the size of shared RAM */ 802/* the function returns the RAM size in units of 512 bytes */ 803 804static unsigned char __devinit get_sram_size(struct tok_info *adapt_info) 805{ 806 unsigned char avail_sram_code; 807 static unsigned char size_code[] = { 0, 16, 32, 64, 127, 128 }; 808 /* Adapter gives 809 'F' -- use RRR bits 3,2 810 'E' -- 8kb 'D' -- 16kb 811 'C' -- 32kb 'A' -- 64KB 812 'B' - 64KB less 512 bytes at top 813 (WARNING ... must zero top bytes in INIT */ 814 815 avail_sram_code = 0xf - readb(adapt_info->mmio + AIPAVAILSHRAM); 816 if (avail_sram_code) return size_code[avail_sram_code]; 817 else /* for code 'F', must compute size from RRR(3,2) bits */ 818 return 1 << 819 ((readb(adapt_info->mmio+ACA_OFFSET+ACA_RW+RRR_ODD)>>2&3)+4); 820} 821 822/*****************************************************************************/ 823 824static int __devinit trdev_init(struct net_device *dev) 825{ 826 struct tok_info *ti = (struct tok_info *) dev->priv; 827 828 SET_PAGE(ti->srb_page); 829 ti->open_failure = NO ; 830 dev->open = tok_open; 831 dev->stop = tok_close; 832 dev->hard_start_xmit = tok_send_packet; 833 dev->get_stats = tok_get_stats; 834 dev->set_multicast_list = tok_set_multicast_list; 835 dev->change_mtu = ibmtr_change_mtu; 836 837 return 0; 838} 839 840/*****************************************************************************/ 841 842static int tok_init_card(struct net_device *dev) 843{ 844 struct tok_info *ti; 845 short PIOaddr; 846 unsigned long i; 847 848 PIOaddr = dev->base_addr; 849 ti = (struct tok_info *) dev->priv; 850 /* Special processing for first interrupt after reset */ 851 ti->do_tok_int = FIRST_INT; 852 /* Reset adapter */ 853 writeb(~INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_RESET + ISRP_EVEN); 854 outb(0, PIOaddr + ADAPTRESET); 855 856 schedule_timeout_uninterruptible(TR_RST_TIME); /* wait 50ms */ 857 858 outb(0, PIOaddr + ADAPTRESETREL); 859#ifdef ENABLE_PAGING 860 if (ti->page_mask) 861 writeb(SRPR_ENABLE_PAGING,ti->mmio+ACA_OFFSET+ACA_RW+SRPR_EVEN); 862#endif 863 writeb(INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_SET + ISRP_EVEN); 864 i = sleep_on_timeout(&ti->wait_for_reset, 4 * HZ); 865 return i? 0 : -EAGAIN; 866} 867 868/*****************************************************************************/ 869static int tok_open(struct net_device *dev) 870{ 871 struct tok_info *ti = (struct tok_info *) dev->priv; 872 int i; 873 874 /*the case we were left in a failure state during a previous open */ 875 if (ti->open_failure == YES) { 876 DPRINTK("Last time you were disconnected, how about now?\n"); 877 printk("You can't insert with an ICS connector half-cocked.\n"); 878 } 879 880 ti->open_status = CLOSED; /* CLOSED or OPEN */ 881 ti->sap_status = CLOSED; /* CLOSED or OPEN */ 882 ti->open_failure = NO; /* NO or YES */ 883 ti->open_mode = MANUAL; /* MANUAL or AUTOMATIC */ 884 885 ti->sram_phys &= ~1; /* to reverse what we do in tok_close */ 886 /* init the spinlock */ 887 spin_lock_init(&ti->lock); 888 init_timer(&ti->tr_timer); 889 890 i = tok_init_card(dev); 891 if (i) return i; 892 893 while (1){ 894 tok_open_adapter((unsigned long) dev); 895 i= interruptible_sleep_on_timeout(&ti->wait_for_reset, 25 * HZ); 896 /* sig catch: estimate opening adapter takes more than .5 sec*/ 897 if (i>(245*HZ)/10) break; /* fancier than if (i==25*HZ) */ 898 if (i==0) break; 899 if (ti->open_status == OPEN && ti->sap_status==OPEN) { 900 netif_start_queue(dev); 901 DPRINTK("Adapter is up and running\n"); 902 return 0; 903 } 904 i=schedule_timeout_interruptible(TR_RETRY_INTERVAL); 905 /* wait 30 seconds */ 906 if(i!=0) break; /*prob. a signal, like the i>24*HZ case above */ 907 } 908 outb(0, dev->base_addr + ADAPTRESET);/* kill pending interrupts*/ 909 DPRINTK("TERMINATED via signal\n"); /*BMS useful */ 910 return -EAGAIN; 911} 912 913/*****************************************************************************/ 914 915#define COMMAND_OFST 0 916#define OPEN_OPTIONS_OFST 8 917#define NUM_RCV_BUF_OFST 24 918#define RCV_BUF_LEN_OFST 26 919#define DHB_LENGTH_OFST 28 920#define NUM_DHB_OFST 30 921#define DLC_MAX_SAP_OFST 32 922#define DLC_MAX_STA_OFST 33 923 924static void tok_open_adapter(unsigned long dev_addr) 925{ 926 struct net_device *dev = (struct net_device *) dev_addr; 927 struct tok_info *ti; 928 int i; 929 930 ti = (struct tok_info *) dev->priv; 931 SET_PAGE(ti->init_srb_page); 932 writeb(~SRB_RESP_INT, ti->mmio + ACA_OFFSET + ACA_RESET + ISRP_ODD); 933 for (i = 0; i < sizeof(struct dir_open_adapter); i++) 934 writeb(0, ti->init_srb + i); 935 writeb(DIR_OPEN_ADAPTER, ti->init_srb + COMMAND_OFST); 936 writew(htons(OPEN_PASS_BCON_MAC), ti->init_srb + OPEN_OPTIONS_OFST); 937 if (ti->ring_speed == 16) { 938 writew(htons(ti->dhb_size16mb), ti->init_srb + DHB_LENGTH_OFST); 939 writew(htons(ti->rbuf_cnt16), ti->init_srb + NUM_RCV_BUF_OFST); 940 writew(htons(ti->rbuf_len16), ti->init_srb + RCV_BUF_LEN_OFST); 941 } else { 942 writew(htons(ti->dhb_size4mb), ti->init_srb + DHB_LENGTH_OFST); 943 writew(htons(ti->rbuf_cnt4), ti->init_srb + NUM_RCV_BUF_OFST); 944 writew(htons(ti->rbuf_len4), ti->init_srb + RCV_BUF_LEN_OFST); 945 } 946 writeb(NUM_DHB, /* always 2 */ ti->init_srb + NUM_DHB_OFST); 947 writeb(DLC_MAX_SAP, ti->init_srb + DLC_MAX_SAP_OFST); 948 writeb(DLC_MAX_STA, ti->init_srb + DLC_MAX_STA_OFST); 949 ti->srb = ti->init_srb; /* We use this one in the interrupt handler */ 950 ti->srb_page = ti->init_srb_page; 951 DPRINTK("Opening adapter: Xmit bfrs: %d X %d, Rcv bfrs: %d X %d\n", 952 readb(ti->init_srb + NUM_DHB_OFST), 953 ntohs(readw(ti->init_srb + DHB_LENGTH_OFST)), 954 ntohs(readw(ti->init_srb + NUM_RCV_BUF_OFST)), 955 ntohs(readw(ti->init_srb + RCV_BUF_LEN_OFST))); 956 writeb(INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_SET + ISRP_EVEN); 957 writeb(CMD_IN_SRB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD); 958} 959 960/*****************************************************************************/ 961 962static void open_sap(unsigned char type, struct net_device *dev) 963{ 964 int i; 965 struct tok_info *ti = (struct tok_info *) dev->priv; 966 967 SET_PAGE(ti->srb_page); 968 for (i = 0; i < sizeof(struct dlc_open_sap); i++) 969 writeb(0, ti->srb + i); 970 971#define MAX_I_FIELD_OFST 14 972#define SAP_VALUE_OFST 16 973#define SAP_OPTIONS_OFST 17 974#define STATION_COUNT_OFST 18 975 976 writeb(DLC_OPEN_SAP, ti->srb + COMMAND_OFST); 977 writew(htons(MAX_I_FIELD), ti->srb + MAX_I_FIELD_OFST); 978 writeb(SAP_OPEN_IND_SAP | SAP_OPEN_PRIORITY, ti->srb+ SAP_OPTIONS_OFST); 979 writeb(SAP_OPEN_STATION_CNT, ti->srb + STATION_COUNT_OFST); 980 writeb(type, ti->srb + SAP_VALUE_OFST); 981 writeb(CMD_IN_SRB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD); 982} 983 984 985/*****************************************************************************/ 986 987static void tok_set_multicast_list(struct net_device *dev) 988{ 989 struct tok_info *ti = (struct tok_info *) dev->priv; 990 struct dev_mc_list *mclist; 991 unsigned char address[4]; 992 993 int i; 994 995 /*BMS the next line is CRUCIAL or you may be sad when you */ 996 /*BMS ifconfig tr down or hot unplug a PCMCIA card ??hownowbrowncow*/ 997 if (/*BMSHELPdev->start == 0 ||*/ ti->open_status != OPEN) return; 998 address[0] = address[1] = address[2] = address[3] = 0; 999 mclist = dev->mc_list; 1000 for (i = 0; i < dev->mc_count; i++) { 1001 address[0] |= mclist->dmi_addr[2]; 1002 address[1] |= mclist->dmi_addr[3]; 1003 address[2] |= mclist->dmi_addr[4]; 1004 address[3] |= mclist->dmi_addr[5]; 1005 mclist = mclist->next; 1006 } 1007 SET_PAGE(ti->srb_page); 1008 for (i = 0; i < sizeof(struct srb_set_funct_addr); i++) 1009 writeb(0, ti->srb + i); 1010 1011#define FUNCT_ADDRESS_OFST 6 1012 1013 writeb(DIR_SET_FUNC_ADDR, ti->srb + COMMAND_OFST); 1014 for (i = 0; i < 4; i++) 1015 writeb(address[i], ti->srb + FUNCT_ADDRESS_OFST + i); 1016 writeb(CMD_IN_SRB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD); 1017#if TR_VERBOSE 1018 DPRINTK("Setting functional address: "); 1019 for (i=0;i<4;i++) printk("%02X ", address[i]); 1020 printk("\n"); 1021#endif 1022} 1023 1024/*****************************************************************************/ 1025 1026#define STATION_ID_OFST 4 1027 1028static int tok_send_packet(struct sk_buff *skb, struct net_device *dev) 1029{ 1030 struct tok_info *ti; 1031 unsigned long flags; 1032 ti = (struct tok_info *) dev->priv; 1033 1034 netif_stop_queue(dev); 1035 1036 /* lock against other CPUs */ 1037 spin_lock_irqsave(&(ti->lock), flags); 1038 1039 /* Save skb; we'll need it when the adapter asks for the data */ 1040 ti->current_skb = skb; 1041 SET_PAGE(ti->srb_page); 1042 writeb(XMIT_UI_FRAME, ti->srb + COMMAND_OFST); 1043 writew(ti->exsap_station_id, ti->srb + STATION_ID_OFST); 1044 writeb(CMD_IN_SRB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD); 1045 spin_unlock_irqrestore(&(ti->lock), flags); 1046 dev->trans_start = jiffies; 1047 return 0; 1048} 1049 1050/*****************************************************************************/ 1051 1052static int tok_close(struct net_device *dev) 1053{ 1054 struct tok_info *ti = (struct tok_info *) dev->priv; 1055 1056 /* Important for PCMCIA hot unplug, otherwise, we'll pull the card, */ 1057 /* unloading the module from memory, and then if a timer pops, ouch */ 1058 del_timer_sync(&ti->tr_timer); 1059 outb(0, dev->base_addr + ADAPTRESET); 1060 ti->sram_phys |= 1; 1061 ti->open_status = CLOSED; 1062 1063 netif_stop_queue(dev); 1064 DPRINTK("Adapter is closed.\n"); 1065 return 0; 1066} 1067 1068/*****************************************************************************/ 1069 1070#define RETCODE_OFST 2 1071#define OPEN_ERROR_CODE_OFST 6 1072#define ASB_ADDRESS_OFST 8 1073#define SRB_ADDRESS_OFST 10 1074#define ARB_ADDRESS_OFST 12 1075#define SSB_ADDRESS_OFST 14 1076 1077static char *printphase[]= {"Lobe media test","Physical insertion", 1078 "Address verification","Roll call poll","Request Parameters"}; 1079static char *printerror[]={"Function failure","Signal loss","Reserved", 1080 "Frequency error","Timeout","Ring failure","Ring beaconing", 1081 "Duplicate node address", 1082 "Parameter request-retry count exceeded","Remove received", 1083 "IMPL force received","Duplicate modifier", 1084 "No monitor detected","Monitor contention failed for RPL"}; 1085 1086static void __iomem *map_address(struct tok_info *ti, unsigned index, __u8 *page) 1087{ 1088 if (ti->page_mask) { 1089 *page = (index >> 8) & ti->page_mask; 1090 index &= ~(ti->page_mask << 8); 1091 } 1092 return ti->sram_virt + index; 1093} 1094 1095static void dir_open_adapter (struct net_device *dev) 1096{ 1097 struct tok_info *ti = (struct tok_info *) dev->priv; 1098 unsigned char ret_code; 1099 __u16 err; 1100 1101 ti->srb = map_address(ti, 1102 ntohs(readw(ti->init_srb + SRB_ADDRESS_OFST)), 1103 &ti->srb_page); 1104 ti->ssb = map_address(ti, 1105 ntohs(readw(ti->init_srb + SSB_ADDRESS_OFST)), 1106 &ti->ssb_page); 1107 ti->arb = map_address(ti, 1108 ntohs(readw(ti->init_srb + ARB_ADDRESS_OFST)), 1109 &ti->arb_page); 1110 ti->asb = map_address(ti, 1111 ntohs(readw(ti->init_srb + ASB_ADDRESS_OFST)), 1112 &ti->asb_page); 1113 ti->current_skb = NULL; 1114 ret_code = readb(ti->init_srb + RETCODE_OFST); 1115 err = ntohs(readw(ti->init_srb + OPEN_ERROR_CODE_OFST)); 1116 if (!ret_code) { 1117 ti->open_status = OPEN; /* TR adapter is now available */ 1118 if (ti->open_mode == AUTOMATIC) { 1119 DPRINTK("Adapter reopened.\n"); 1120 } 1121 writeb(~SRB_RESP_INT, ti->mmio+ACA_OFFSET+ACA_RESET+ISRP_ODD); 1122 open_sap(EXTENDED_SAP, dev); 1123 return; 1124 } 1125 ti->open_failure = YES; 1126 if (ret_code == 7){ 1127 if (err == 0x24) { 1128 if (!ti->auto_speedsave) { 1129 DPRINTK("Open failed: Adapter speed must match " 1130 "ring speed if Automatic Ring Speed Save is " 1131 "disabled.\n"); 1132 ti->open_action = FAIL; 1133 }else 1134 DPRINTK("Retrying open to adjust to " 1135 "ring speed, "); 1136 } else if (err == 0x2d) { 1137 DPRINTK("Physical Insertion: No Monitor Detected, "); 1138 printk("retrying after %ds delay...\n", 1139 TR_RETRY_INTERVAL/HZ); 1140 } else if (err == 0x11) { 1141 DPRINTK("Lobe Media Function Failure (0x11), "); 1142 printk(" retrying after %ds delay...\n", 1143 TR_RETRY_INTERVAL/HZ); 1144 } else { 1145 char **prphase = printphase; 1146 char **prerror = printerror; 1147 DPRINTK("TR Adapter misc open failure, error code = "); 1148 printk("0x%x, Phase: %s, Error: %s\n", 1149 err, prphase[err/16 -1], prerror[err%16 -1]); 1150 printk(" retrying after %ds delay...\n", 1151 TR_RETRY_INTERVAL/HZ); 1152 } 1153 } else DPRINTK("open failed: ret_code = %02X..., ", ret_code); 1154 if (ti->open_action != FAIL) { 1155 if (ti->open_mode==AUTOMATIC){ 1156 ti->open_action = REOPEN; 1157 ibmtr_reset_timer(&(ti->tr_timer), dev); 1158 return; 1159 } 1160 wake_up(&ti->wait_for_reset); 1161 return; 1162 } 1163 DPRINTK("FAILURE, CAPUT\n"); 1164} 1165 1166/******************************************************************************/ 1167 1168static irqreturn_t tok_interrupt(int irq, void *dev_id) 1169{ 1170 unsigned char status; 1171 /* unsigned char status_even ; */ 1172 struct tok_info *ti; 1173 struct net_device *dev; 1174#ifdef ENABLE_PAGING 1175 unsigned char save_srpr; 1176#endif 1177 1178 dev = dev_id; 1179#if TR_VERBOSE 1180 DPRINTK("Int from tok_driver, dev : %p irq%d\n", dev,irq); 1181#endif 1182 ti = (struct tok_info *) dev->priv; 1183 if (ti->sram_phys & 1) 1184 return IRQ_NONE; /* PCMCIA card extraction flag */ 1185 spin_lock(&(ti->lock)); 1186#ifdef ENABLE_PAGING 1187 save_srpr = readb(ti->mmio + ACA_OFFSET + ACA_RW + SRPR_EVEN); 1188#endif 1189 1190 /* Disable interrupts till processing is finished */ 1191 writeb((~INT_ENABLE), ti->mmio + ACA_OFFSET + ACA_RESET + ISRP_EVEN); 1192 1193 /* Reset interrupt for ISA boards */ 1194 if (ti->adapter_int_enable) 1195 outb(0, ti->adapter_int_enable); 1196 else /* used for PCMCIA cards */ 1197 outb(0, ti->global_int_enable); 1198 if (ti->do_tok_int == FIRST_INT){ 1199 initial_tok_int(dev); 1200#ifdef ENABLE_PAGING 1201 writeb(save_srpr, ti->mmio + ACA_OFFSET + ACA_RW + SRPR_EVEN); 1202#endif 1203 spin_unlock(&(ti->lock)); 1204 return IRQ_HANDLED; 1205 } 1206 /* Begin interrupt handler HERE inline to avoid the extra 1207 levels of logic and call depth for the original solution. */ 1208 status = readb(ti->mmio + ACA_OFFSET + ACA_RW + ISRP_ODD); 1209 /*BMSstatus_even = readb (ti->mmio + ACA_OFFSET + ACA_RW + ISRP_EVEN) */ 1210 /*BMSdebugprintk("tok_interrupt: ISRP_ODD = 0x%x ISRP_EVEN = 0x%x\n", */ 1211 /*BMS status,status_even); */ 1212 1213 if (status & ADAP_CHK_INT) { 1214 int i; 1215 void __iomem *check_reason; 1216 __u8 check_reason_page = 0; 1217 check_reason = map_address(ti, 1218 ntohs(readw(ti->mmio+ ACA_OFFSET+ACA_RW + WWCR_EVEN)), 1219 &check_reason_page); 1220 SET_PAGE(check_reason_page); 1221 1222 DPRINTK("Adapter check interrupt\n"); 1223 DPRINTK("8 reason bytes follow: "); 1224 for (i = 0; i < 8; i++, check_reason++) 1225 printk("%02X ", (int) readb(check_reason)); 1226 printk("\n"); 1227 writeb(~ADAP_CHK_INT, ti->mmio+ ACA_OFFSET+ACA_RESET+ ISRP_ODD); 1228 status = readb(ti->mmio + ACA_OFFSET + ACA_RW + ISRA_EVEN); 1229 DPRINTK("ISRA_EVEN == 0x02%x\n",status); 1230 ti->open_status = CLOSED; 1231 ti->sap_status = CLOSED; 1232 ti->open_mode = AUTOMATIC; 1233 netif_carrier_off(dev); 1234 netif_stop_queue(dev); 1235 ti->open_action = RESTART; 1236 outb(0, dev->base_addr + ADAPTRESET); 1237 ibmtr_reset_timer(&(ti->tr_timer), dev);/*BMS try to reopen*/ 1238 spin_unlock(&(ti->lock)); 1239 return IRQ_HANDLED; 1240 } 1241 if (readb(ti->mmio + ACA_OFFSET + ACA_RW + ISRP_EVEN) 1242 & (TCR_INT | ERR_INT | ACCESS_INT)) { 1243 DPRINTK("adapter error: ISRP_EVEN : %02x\n", 1244 (int)readb(ti->mmio+ ACA_OFFSET + ACA_RW + ISRP_EVEN)); 1245 writeb(~(TCR_INT | ERR_INT | ACCESS_INT), 1246 ti->mmio + ACA_OFFSET + ACA_RESET + ISRP_EVEN); 1247 status= readb(ti->mmio+ ACA_OFFSET + ACA_RW + ISRA_EVEN);/*BMS*/ 1248 DPRINTK("ISRA_EVEN == 0x02%x\n",status);/*BMS*/ 1249 writeb(INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_SET + ISRP_EVEN); 1250#ifdef ENABLE_PAGING 1251 writeb(save_srpr, ti->mmio + ACA_OFFSET + ACA_RW + SRPR_EVEN); 1252#endif 1253 spin_unlock(&(ti->lock)); 1254 return IRQ_HANDLED; 1255 } 1256 if (status & SRB_RESP_INT) { /* SRB response */ 1257 SET_PAGE(ti->srb_page); 1258#if TR_VERBOSE 1259 DPRINTK("SRB resp: cmd=%02X rsp=%02X\n", 1260 readb(ti->srb), readb(ti->srb + RETCODE_OFST)); 1261#endif 1262 switch (readb(ti->srb)) { /* SRB command check */ 1263 case XMIT_DIR_FRAME:{ 1264 unsigned char xmit_ret_code; 1265 xmit_ret_code = readb(ti->srb + RETCODE_OFST); 1266 if (xmit_ret_code == 0xff) break; 1267 DPRINTK("error on xmit_dir_frame request: %02X\n", 1268 xmit_ret_code); 1269 if (ti->current_skb) { 1270 dev_kfree_skb_irq(ti->current_skb); 1271 ti->current_skb = NULL; 1272 } 1273 /*dev->tbusy = 0;*/ 1274 netif_wake_queue(dev); 1275 if (ti->readlog_pending) 1276 ibmtr_readlog(dev); 1277 break; 1278 } 1279 case XMIT_UI_FRAME:{ 1280 unsigned char xmit_ret_code; 1281 1282 xmit_ret_code = readb(ti->srb + RETCODE_OFST); 1283 if (xmit_ret_code == 0xff) break; 1284 DPRINTK("error on xmit_ui_frame request: %02X\n", 1285 xmit_ret_code); 1286 if (ti->current_skb) { 1287 dev_kfree_skb_irq(ti->current_skb); 1288 ti->current_skb = NULL; 1289 } 1290 netif_wake_queue(dev); 1291 if (ti->readlog_pending) 1292 ibmtr_readlog(dev); 1293 break; 1294 } 1295 case DIR_OPEN_ADAPTER: 1296 dir_open_adapter(dev); 1297 break; 1298 case DLC_OPEN_SAP: 1299 if (readb(ti->srb + RETCODE_OFST)) { 1300 DPRINTK("open_sap failed: ret_code = %02X, " 1301 "retrying\n", 1302 (int) readb(ti->srb + RETCODE_OFST)); 1303 ti->open_action = REOPEN; 1304 ibmtr_reset_timer(&(ti->tr_timer), dev); 1305 break; 1306 } 1307 ti->exsap_station_id = readw(ti->srb + STATION_ID_OFST); 1308 ti->sap_status = OPEN;/* TR adapter is now available */ 1309 if (ti->open_mode==MANUAL){ 1310 wake_up(&ti->wait_for_reset); 1311 break; 1312 } 1313 netif_wake_queue(dev); 1314 netif_carrier_on(dev); 1315 break; 1316 case DIR_INTERRUPT: 1317 case DIR_MOD_OPEN_PARAMS: 1318 case DIR_SET_GRP_ADDR: 1319 case DIR_SET_FUNC_ADDR: 1320 case DLC_CLOSE_SAP: 1321 if (readb(ti->srb + RETCODE_OFST)) 1322 DPRINTK("error on %02X: %02X\n", 1323 (int) readb(ti->srb + COMMAND_OFST), 1324 (int) readb(ti->srb + RETCODE_OFST)); 1325 break; 1326 case DIR_READ_LOG: 1327 if (readb(ti->srb + RETCODE_OFST)){ 1328 DPRINTK("error on dir_read_log: %02X\n", 1329 (int) readb(ti->srb + RETCODE_OFST)); 1330 netif_wake_queue(dev); 1331 break; 1332 } 1333#if IBMTR_DEBUG_MESSAGES 1334 1335#define LINE_ERRORS_OFST 0 1336#define INTERNAL_ERRORS_OFST 1 1337#define BURST_ERRORS_OFST 2 1338#define AC_ERRORS_OFST 3 1339#define ABORT_DELIMITERS_OFST 4 1340#define LOST_FRAMES_OFST 6 1341#define RECV_CONGEST_COUNT_OFST 7 1342#define FRAME_COPIED_ERRORS_OFST 8 1343#define FREQUENCY_ERRORS_OFST 9 1344#define TOKEN_ERRORS_OFST 10 1345 1346 DPRINTK("Line errors %02X, Internal errors %02X, " 1347 "Burst errors %02X\n" "A/C errors %02X, " 1348 "Abort delimiters %02X, Lost frames %02X\n" 1349 "Receive congestion count %02X, " 1350 "Frame copied errors %02X\nFrequency errors %02X, " 1351 "Token errors %02X\n", 1352 (int) readb(ti->srb + LINE_ERRORS_OFST), 1353 (int) readb(ti->srb + INTERNAL_ERRORS_OFST), 1354 (int) readb(ti->srb + BURST_ERRORS_OFST), 1355 (int) readb(ti->srb + AC_ERRORS_OFST), 1356 (int) readb(ti->srb + ABORT_DELIMITERS_OFST), 1357 (int) readb(ti->srb + LOST_FRAMES_OFST), 1358 (int) readb(ti->srb + RECV_CONGEST_COUNT_OFST), 1359 (int) readb(ti->srb + FRAME_COPIED_ERRORS_OFST), 1360 (int) readb(ti->srb + FREQUENCY_ERRORS_OFST), 1361 (int) readb(ti->srb + TOKEN_ERRORS_OFST)); 1362#endif 1363 netif_wake_queue(dev); 1364 break; 1365 default: 1366 DPRINTK("Unknown command %02X encountered\n", 1367 (int) readb(ti->srb)); 1368 } /* end switch SRB command check */ 1369 writeb(~SRB_RESP_INT, ti->mmio+ ACA_OFFSET+ACA_RESET+ ISRP_ODD); 1370 } /* if SRB response */ 1371 if (status & ASB_FREE_INT) { /* ASB response */ 1372 SET_PAGE(ti->asb_page); 1373#if TR_VERBOSE 1374 DPRINTK("ASB resp: cmd=%02X\n", readb(ti->asb)); 1375#endif 1376 1377 switch (readb(ti->asb)) { /* ASB command check */ 1378 case REC_DATA: 1379 case XMIT_UI_FRAME: 1380 case XMIT_DIR_FRAME: 1381 break; 1382 default: 1383 DPRINTK("unknown command in asb %02X\n", 1384 (int) readb(ti->asb)); 1385 } /* switch ASB command check */ 1386 if (readb(ti->asb + 2) != 0xff) /* checks ret_code */ 1387 DPRINTK("ASB error %02X in cmd %02X\n", 1388 (int) readb(ti->asb + 2), (int) readb(ti->asb)); 1389 writeb(~ASB_FREE_INT, ti->mmio+ ACA_OFFSET+ACA_RESET+ ISRP_ODD); 1390 } /* if ASB response */ 1391 1392#define STATUS_OFST 6 1393#define NETW_STATUS_OFST 6 1394 1395 if (status & ARB_CMD_INT) { /* ARB response */ 1396 SET_PAGE(ti->arb_page); 1397#if TR_VERBOSE 1398 DPRINTK("ARB resp: cmd=%02X\n", readb(ti->arb)); 1399#endif 1400 1401 switch (readb(ti->arb)) { /* ARB command check */ 1402 case DLC_STATUS: 1403 DPRINTK("DLC_STATUS new status: %02X on station %02X\n", 1404 ntohs(readw(ti->arb + STATUS_OFST)), 1405 ntohs(readw(ti->arb+ STATION_ID_OFST))); 1406 break; 1407 case REC_DATA: 1408 tr_rx(dev); 1409 break; 1410 case RING_STAT_CHANGE:{ 1411 unsigned short ring_status; 1412 ring_status= ntohs(readw(ti->arb + NETW_STATUS_OFST)); 1413 if (ibmtr_debug_trace & TRC_INIT) 1414 DPRINTK("Ring Status Change...(0x%x)\n", 1415 ring_status); 1416 if(ring_status& (REMOVE_RECV|AUTO_REMOVAL|LOBE_FAULT)){ 1417 netif_stop_queue(dev); 1418 netif_carrier_off(dev); 1419 DPRINTK("Remove received, or Auto-removal error" 1420 ", or Lobe fault\n"); 1421 DPRINTK("We'll try to reopen the closed adapter" 1422 " after a %d second delay.\n", 1423 TR_RETRY_INTERVAL/HZ); 1424 /*I was confused: I saw the TR reopening but */ 1425 /*forgot:with an RJ45 in an RJ45/ICS adapter */ 1426 /*but adapter not in the ring, the TR will */ 1427 /* open, and then soon close and come here. */ 1428 ti->open_mode = AUTOMATIC; 1429 ti->open_status = CLOSED; /*12/2000 BMS*/ 1430 ti->open_action = REOPEN; 1431 ibmtr_reset_timer(&(ti->tr_timer), dev); 1432 } else if (ring_status & LOG_OVERFLOW) { 1433 if(netif_queue_stopped(dev)) 1434 ti->readlog_pending = 1; 1435 else 1436 ibmtr_readlog(dev); 1437 } 1438 break; 1439 } 1440 case XMIT_DATA_REQ: 1441 tr_tx(dev); 1442 break; 1443 default: 1444 DPRINTK("Unknown command %02X in arb\n", 1445 (int) readb(ti->arb)); 1446 break; 1447 } /* switch ARB command check */ 1448 writeb(~ARB_CMD_INT, ti->mmio+ ACA_OFFSET+ACA_RESET + ISRP_ODD); 1449 writeb(ARB_FREE, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD); 1450 } /* if ARB response */ 1451 if (status & SSB_RESP_INT) { /* SSB response */ 1452 unsigned char retcode; 1453 SET_PAGE(ti->ssb_page); 1454#if TR_VERBOSE 1455 DPRINTK("SSB resp: cmd=%02X rsp=%02X\n", 1456 readb(ti->ssb), readb(ti->ssb + 2)); 1457#endif 1458 1459 switch (readb(ti->ssb)) { /* SSB command check */ 1460 case XMIT_DIR_FRAME: 1461 case XMIT_UI_FRAME: 1462 retcode = readb(ti->ssb + 2); 1463 if (retcode && (retcode != 0x22))/* checks ret_code */ 1464 DPRINTK("xmit ret_code: %02X xmit error code: " 1465 "%02X\n", 1466 (int)retcode, (int)readb(ti->ssb + 6)); 1467 else 1468 ti->tr_stats.tx_packets++; 1469 break; 1470 case XMIT_XID_CMD: 1471 DPRINTK("xmit xid ret_code: %02X\n", 1472 (int) readb(ti->ssb + 2)); 1473 default: 1474 DPRINTK("Unknown command %02X in ssb\n", 1475 (int) readb(ti->ssb)); 1476 } /* SSB command check */ 1477 writeb(~SSB_RESP_INT, ti->mmio+ ACA_OFFSET+ACA_RESET+ ISRP_ODD); 1478 writeb(SSB_FREE, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD); 1479 } /* if SSB response */ 1480#ifdef ENABLE_PAGING 1481 writeb(save_srpr, ti->mmio + ACA_OFFSET + ACA_RW + SRPR_EVEN); 1482#endif 1483 writeb(INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_SET + ISRP_EVEN); 1484 spin_unlock(&(ti->lock)); 1485 return IRQ_HANDLED; 1486} /*tok_interrupt */ 1487 1488/*****************************************************************************/ 1489 1490#define INIT_STATUS_OFST 1 1491#define INIT_STATUS_2_OFST 2 1492#define ENCODED_ADDRESS_OFST 8 1493 1494static void initial_tok_int(struct net_device *dev) 1495{ 1496 1497 __u32 encoded_addr, hw_encoded_addr; 1498 struct tok_info *ti; 1499 unsigned char init_status; /*BMS 12/2000*/ 1500 1501 ti = (struct tok_info *) dev->priv; 1502 1503 ti->do_tok_int = NOT_FIRST; 1504 1505 /* we assign the shared-ram address for ISA devices */ 1506 writeb(ti->sram_base, ti->mmio + ACA_OFFSET + ACA_RW + RRR_EVEN); 1507#ifndef PCMCIA 1508 ti->sram_virt = ioremap(((__u32)ti->sram_base << 12), ti->avail_shared_ram); 1509#endif 1510 ti->init_srb = map_address(ti, 1511 ntohs(readw(ti->mmio + ACA_OFFSET + WRBR_EVEN)), 1512 &ti->init_srb_page); 1513 if (ti->page_mask && ti->avail_shared_ram == 127) { 1514 void __iomem *last_512; 1515 __u8 last_512_page=0; 1516 int i; 1517 last_512 = map_address(ti, 0xfe00, &last_512_page); 1518 /* initialize high section of ram (if necessary) */ 1519 SET_PAGE(last_512_page); 1520 for (i = 0; i < 512; i++) 1521 writeb(0, last_512 + i); 1522 } 1523 SET_PAGE(ti->init_srb_page); 1524 1525#if TR_VERBOSE 1526 { 1527 int i; 1528 1529 DPRINTK("ti->init_srb_page=0x%x\n", ti->init_srb_page); 1530 DPRINTK("init_srb(%p):", ti->init_srb ); 1531 for (i = 0; i < 20; i++) 1532 printk("%02X ", (int) readb(ti->init_srb + i)); 1533 printk("\n"); 1534 } 1535#endif 1536 1537 hw_encoded_addr = readw(ti->init_srb + ENCODED_ADDRESS_OFST); 1538 encoded_addr = ntohs(hw_encoded_addr); 1539 init_status= /*BMS 12/2000 check for shallow mode possibility (Turbo)*/ 1540 readb(ti->init_srb+offsetof(struct srb_init_response,init_status)); 1541 /*printk("Initial interrupt: init_status= 0x%02x\n",init_status);*/ 1542 ti->ring_speed = init_status & 0x01 ? 16 : 4; 1543 DPRINTK("Initial interrupt : %d Mbps, shared RAM base %08x.\n", 1544 ti->ring_speed, (unsigned int)dev->mem_start); 1545 ti->auto_speedsave=readb(ti->init_srb+INIT_STATUS_2_OFST)&4?TRUE:FALSE; 1546 1547 if (ti->open_mode == MANUAL) wake_up(&ti->wait_for_reset); 1548 else tok_open_adapter((unsigned long)dev); 1549 1550} /*initial_tok_int() */ 1551 1552/*****************************************************************************/ 1553 1554#define CMD_CORRELATE_OFST 1 1555#define DHB_ADDRESS_OFST 6 1556 1557#define FRAME_LENGTH_OFST 6 1558#define HEADER_LENGTH_OFST 8 1559#define RSAP_VALUE_OFST 9 1560 1561static void tr_tx(struct net_device *dev) 1562{ 1563 struct tok_info *ti = (struct tok_info *) dev->priv; 1564 struct trh_hdr *trhdr = (struct trh_hdr *) ti->current_skb->data; 1565 unsigned int hdr_len; 1566 __u32 dhb=0,dhb_base; 1567 void __iomem *dhbuf = NULL; 1568 unsigned char xmit_command; 1569 int i,dhb_len=0x4000,src_len,src_offset; 1570 struct trllc *llc; 1571 struct srb_xmit xsrb; 1572 __u8 dhb_page = 0; 1573 __u8 llc_ssap; 1574 1575 SET_PAGE(ti->asb_page); 1576 1577 if (readb(ti->asb+RETCODE_OFST) != 0xFF) DPRINTK("ASB not free !!!\n"); 1578 1579 /* in providing the transmit interrupts, is telling us it is ready for 1580 data and providing a shared memory address for us to stuff with data. 1581 Here we compute the effective address where we will place data. 1582 */ 1583 SET_PAGE(ti->arb_page); 1584 dhb=dhb_base=ntohs(readw(ti->arb + DHB_ADDRESS_OFST)); 1585 if (ti->page_mask) { 1586 dhb_page = (dhb_base >> 8) & ti->page_mask; 1587 dhb=dhb_base & ~(ti->page_mask << 8); 1588 } 1589 dhbuf = ti->sram_virt + dhb; 1590 1591 /* Figure out the size of the 802.5 header */ 1592 if (!(trhdr->saddr[0] & 0x80)) /* RIF present? */ 1593 hdr_len = sizeof(struct trh_hdr) - TR_MAXRIFLEN; 1594 else 1595 hdr_len = ((ntohs(trhdr->rcf) & TR_RCF_LEN_MASK) >> 8) 1596 + sizeof(struct trh_hdr) - TR_MAXRIFLEN; 1597 1598 llc = (struct trllc *) (ti->current_skb->data + hdr_len); 1599 1600 llc_ssap = llc->ssap; 1601 SET_PAGE(ti->srb_page); 1602 memcpy_fromio(&xsrb, ti->srb, sizeof(xsrb)); 1603 SET_PAGE(ti->asb_page); 1604 xmit_command = xsrb.command; 1605 1606 writeb(xmit_command, ti->asb + COMMAND_OFST); 1607 writew(xsrb.station_id, ti->asb + STATION_ID_OFST); 1608 writeb(llc_ssap, ti->asb + RSAP_VALUE_OFST); 1609 writeb(xsrb.cmd_corr, ti->asb + CMD_CORRELATE_OFST); 1610 writeb(0, ti->asb + RETCODE_OFST); 1611 if ((xmit_command == XMIT_XID_CMD) || (xmit_command == XMIT_TEST_CMD)) { 1612 writew(htons(0x11), ti->asb + FRAME_LENGTH_OFST); 1613 writeb(0x0e, ti->asb + HEADER_LENGTH_OFST); 1614 SET_PAGE(dhb_page); 1615 writeb(AC, dhbuf); 1616 writeb(LLC_FRAME, dhbuf + 1); 1617 for (i = 0; i < TR_ALEN; i++) 1618 writeb((int) 0x0FF, dhbuf + i + 2); 1619 for (i = 0; i < TR_ALEN; i++) 1620 writeb(0, dhbuf + i + TR_ALEN + 2); 1621 writeb(RESP_IN_ASB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD); 1622 return; 1623 } 1624 /* 1625 * the token ring packet is copied from sk_buff to the adapter 1626 * buffer identified in the command data received with the interrupt. 1627 */ 1628 writeb(hdr_len, ti->asb + HEADER_LENGTH_OFST); 1629 writew(htons(ti->current_skb->len), ti->asb + FRAME_LENGTH_OFST); 1630 src_len=ti->current_skb->len; 1631 src_offset=0; 1632 dhb=dhb_base; 1633 while(1) { 1634 if (ti->page_mask) { 1635 dhb_page=(dhb >> 8) & ti->page_mask; 1636 dhb=dhb & ~(ti->page_mask << 8); 1637 dhb_len=0x4000-dhb; /* remaining size of this page */ 1638 } 1639 dhbuf = ti->sram_virt + dhb; 1640 SET_PAGE(dhb_page); 1641 if (src_len > dhb_len) { 1642 memcpy_toio(dhbuf,&ti->current_skb->data[src_offset], 1643 dhb_len); 1644 src_len -= dhb_len; 1645 src_offset += dhb_len; 1646 dhb_base+=dhb_len; 1647 dhb=dhb_base; 1648 continue; 1649 } 1650 memcpy_toio(dhbuf, &ti->current_skb->data[src_offset], src_len); 1651 break; 1652 } 1653 writeb(RESP_IN_ASB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD); 1654 ti->tr_stats.tx_bytes += ti->current_skb->len; 1655 dev_kfree_skb_irq(ti->current_skb); 1656 ti->current_skb = NULL; 1657 netif_wake_queue(dev); 1658 if (ti->readlog_pending) 1659 ibmtr_readlog(dev); 1660} /*tr_tx */ 1661 1662/*****************************************************************************/ 1663 1664 1665#define RECEIVE_BUFFER_OFST 6 1666#define LAN_HDR_LENGTH_OFST 8 1667#define DLC_HDR_LENGTH_OFST 9 1668 1669#define DSAP_OFST 0 1670#define SSAP_OFST 1 1671#define LLC_OFST 2 1672#define PROTID_OFST 3 1673#define ETHERTYPE_OFST 6 1674 1675static void tr_rx(struct net_device *dev) 1676{ 1677 struct tok_info *ti = (struct tok_info *) dev->priv; 1678 __u32 rbuffer; 1679 void __iomem *rbuf, *rbufdata, *llc; 1680 __u8 rbuffer_page = 0; 1681 unsigned char *data; 1682 unsigned int rbuffer_len, lan_hdr_len, hdr_len, ip_len, length; 1683 unsigned char dlc_hdr_len; 1684 struct sk_buff *skb; 1685 unsigned int skb_size = 0; 1686 int IPv4_p = 0; 1687 unsigned int chksum = 0; 1688 struct iphdr *iph; 1689 struct arb_rec_req rarb; 1690 1691 SET_PAGE(ti->arb_page); 1692 memcpy_fromio(&rarb, ti->arb, sizeof(rarb)); 1693 rbuffer = ntohs(rarb.rec_buf_addr) ; 1694 rbuf = map_address(ti, rbuffer, &rbuffer_page); 1695 1696 SET_PAGE(ti->asb_page); 1697 1698 if (readb(ti->asb + RETCODE_OFST) !=0xFF) DPRINTK("ASB not free !!!\n"); 1699 1700 writeb(REC_DATA, ti->asb + COMMAND_OFST); 1701 writew(rarb.station_id, ti->asb + STATION_ID_OFST); 1702 writew(rarb.rec_buf_addr, ti->asb + RECEIVE_BUFFER_OFST); 1703 1704 lan_hdr_len = rarb.lan_hdr_len; 1705 if (lan_hdr_len > sizeof(struct trh_hdr)) { 1706 DPRINTK("Linux cannot handle greater than 18 bytes RIF\n"); 1707 return; 1708 } /*BMS I added this above just to be very safe */ 1709 dlc_hdr_len = readb(ti->arb + DLC_HDR_LENGTH_OFST); 1710 hdr_len = lan_hdr_len + sizeof(struct trllc) + sizeof(struct iphdr); 1711 1712 SET_PAGE(rbuffer_page); 1713 llc = rbuf + offsetof(struct rec_buf, data) + lan_hdr_len; 1714 1715#if TR_VERBOSE 1716 DPRINTK("offsetof data: %02X lan_hdr_len: %02X\n", 1717 (__u32) offsetof(struct rec_buf, data), (unsigned int) lan_hdr_len); 1718 DPRINTK("llc: %08X rec_buf_addr: %04X dev->mem_start: %lX\n", 1719 llc, ntohs(rarb.rec_buf_addr), dev->mem_start); 1720 DPRINTK("dsap: %02X, ssap: %02X, llc: %02X, protid: %02X%02X%02X, " 1721 "ethertype: %04X\n", 1722 (int) readb(llc + DSAP_OFST), (int) readb(llc + SSAP_OFST), 1723 (int) readb(llc + LLC_OFST), (int) readb(llc + PROTID_OFST), 1724 (int) readb(llc+PROTID_OFST+1),(int)readb(llc+PROTID_OFST + 2), 1725 (int) ntohs(readw(llc + ETHERTYPE_OFST))); 1726#endif 1727 if (readb(llc + offsetof(struct trllc, llc)) != UI_CMD) { 1728 SET_PAGE(ti->asb_page); 1729 writeb(DATA_LOST, ti->asb + RETCODE_OFST); 1730 ti->tr_stats.rx_dropped++; 1731 writeb(RESP_IN_ASB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD); 1732 return; 1733 } 1734 length = ntohs(rarb.frame_len); 1735 if (readb(llc + DSAP_OFST) == EXTENDED_SAP && 1736 readb(llc + SSAP_OFST) == EXTENDED_SAP && 1737 length >= hdr_len) IPv4_p = 1; 1738#if TR_VERBOSE 1739#define SADDR_OFST 8 1740#define DADDR_OFST 2 1741 1742 if (!IPv4_p) { 1743 1744 void __iomem *trhhdr = rbuf + offsetof(struct rec_buf, data); 1745 1746 DPRINTK("Probably non-IP frame received.\n"); 1747 DPRINTK("ssap: %02X dsap: %02X " 1748 "saddr: %02X:%02X:%02X:%02X:%02X:%02X " 1749 "daddr: %02X:%02X:%02X:%02X:%02X:%02X\n", 1750 readb(llc + SSAP_OFST), readb(llc + DSAP_OFST), 1751 readb(trhhdr+SADDR_OFST), readb(trhhdr+ SADDR_OFST+1), 1752 readb(trhhdr+SADDR_OFST+2), readb(trhhdr+SADDR_OFST+3), 1753 readb(trhhdr+SADDR_OFST+4), readb(trhhdr+SADDR_OFST+5), 1754 readb(trhhdr+DADDR_OFST), readb(trhhdr+DADDR_OFST + 1), 1755 readb(trhhdr+DADDR_OFST+2), readb(trhhdr+DADDR_OFST+3), 1756 readb(trhhdr+DADDR_OFST+4), readb(trhhdr+DADDR_OFST+5)); 1757 } 1758#endif 1759 1760 /*BMS handle the case she comes in with few hops but leaves with many */ 1761 skb_size=length-lan_hdr_len+sizeof(struct trh_hdr)+sizeof(struct trllc); 1762 1763 if (!(skb = dev_alloc_skb(skb_size))) { 1764 DPRINTK("out of memory. frame dropped.\n"); 1765 ti->tr_stats.rx_dropped++; 1766 SET_PAGE(ti->asb_page); 1767 writeb(DATA_LOST, ti->asb + offsetof(struct asb_rec, ret_code)); 1768 writeb(RESP_IN_ASB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD); 1769 return; 1770 } 1771 /*BMS again, if she comes in with few but leaves with many */ 1772 skb_reserve(skb, sizeof(struct trh_hdr) - lan_hdr_len); 1773 skb_put(skb, length); 1774 data = skb->data; 1775 rbuffer_len = ntohs(readw(rbuf + offsetof(struct rec_buf, buf_len))); 1776 rbufdata = rbuf + offsetof(struct rec_buf, data); 1777 1778 if (IPv4_p) { 1779 /* Copy the headers without checksumming */ 1780 memcpy_fromio(data, rbufdata, hdr_len); 1781 1782 /* Watch for padded packets and bogons */ 1783 iph= (struct iphdr *)(data+ lan_hdr_len + sizeof(struct trllc)); 1784 ip_len = ntohs(iph->tot_len) - sizeof(struct iphdr); 1785 length -= hdr_len; 1786 if ((ip_len <= length) && (ip_len > 7)) 1787 length = ip_len; 1788 data += hdr_len; 1789 rbuffer_len -= hdr_len; 1790 rbufdata += hdr_len; 1791 } 1792 /* Copy the payload... */ 1793#define BUFFER_POINTER_OFST 2 1794#define BUFFER_LENGTH_OFST 6 1795 for (;;) { 1796 if (ibmtr_debug_trace&TRC_INITV && length < rbuffer_len) 1797 DPRINTK("CURIOUS, length=%d < rbuffer_len=%d\n", 1798 length,rbuffer_len); 1799 if (IPv4_p) 1800 chksum=csum_partial_copy_nocheck((void*)rbufdata, 1801 data,length<rbuffer_len?length:rbuffer_len,chksum); 1802 else 1803 memcpy_fromio(data, rbufdata, rbuffer_len); 1804 rbuffer = ntohs(readw(rbuf+BUFFER_POINTER_OFST)) ; 1805 if (!rbuffer) 1806 break; 1807 rbuffer -= 2; 1808 length -= rbuffer_len; 1809 data += rbuffer_len; 1810 rbuf = map_address(ti, rbuffer, &rbuffer_page); 1811 SET_PAGE(rbuffer_page); 1812 rbuffer_len = ntohs(readw(rbuf + BUFFER_LENGTH_OFST)); 1813 rbufdata = rbuf + offsetof(struct rec_buf, data); 1814 } 1815 1816 SET_PAGE(ti->asb_page); 1817 writeb(0, ti->asb + offsetof(struct asb_rec, ret_code)); 1818 1819 writeb(RESP_IN_ASB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD); 1820 1821 ti->tr_stats.rx_bytes += skb->len; 1822 ti->tr_stats.rx_packets++; 1823 1824 skb->protocol = tr_type_trans(skb, dev); 1825 if (IPv4_p) { 1826 skb->csum = chksum; 1827 skb->ip_summed = CHECKSUM_COMPLETE; 1828 } 1829 netif_rx(skb); 1830 dev->last_rx = jiffies; 1831} /*tr_rx */ 1832 1833/*****************************************************************************/ 1834 1835static void ibmtr_reset_timer(struct timer_list *tmr, struct net_device *dev) 1836{ 1837 tmr->expires = jiffies + TR_RETRY_INTERVAL; 1838 tmr->data = (unsigned long) dev; 1839 tmr->function = tok_rerun; 1840 init_timer(tmr); 1841 add_timer(tmr); 1842} 1843 1844/*****************************************************************************/ 1845 1846void tok_rerun(unsigned long dev_addr){ 1847 1848 struct net_device *dev = (struct net_device *)dev_addr; 1849 struct tok_info *ti = (struct tok_info *) dev->priv; 1850 1851 if ( ti->open_action == RESTART){ 1852 ti->do_tok_int = FIRST_INT; 1853 outb(0, dev->base_addr + ADAPTRESETREL); 1854#ifdef ENABLE_PAGING 1855 if (ti->page_mask) 1856 writeb(SRPR_ENABLE_PAGING, 1857 ti->mmio + ACA_OFFSET + ACA_RW + SRPR_EVEN); 1858#endif 1859 1860 writeb(INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_SET + ISRP_EVEN); 1861 } else 1862 tok_open_adapter(dev_addr); 1863} 1864 1865/*****************************************************************************/ 1866 1867static void ibmtr_readlog(struct net_device *dev) 1868{ 1869 struct tok_info *ti; 1870 1871 ti = (struct tok_info *) dev->priv; 1872 1873 ti->readlog_pending = 0; 1874 SET_PAGE(ti->srb_page); 1875 writeb(DIR_READ_LOG, ti->srb); 1876 writeb(INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_SET + ISRP_EVEN); 1877 writeb(CMD_IN_SRB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD); 1878 1879 netif_stop_queue(dev); 1880 1881} 1882 1883/*****************************************************************************/ 1884 1885/* tok_get_stats(): Basically a scaffold routine which will return 1886 the address of the tr_statistics structure associated with 1887 this device -- the tr.... structure is an ethnet look-alike 1888 so at least for this iteration may suffice. */ 1889 1890static struct net_device_stats *tok_get_stats(struct net_device *dev) 1891{ 1892 1893 struct tok_info *toki; 1894 toki = (struct tok_info *) dev->priv; 1895 return (struct net_device_stats *) &toki->tr_stats; 1896} 1897 1898/*****************************************************************************/ 1899 1900static int ibmtr_change_mtu(struct net_device *dev, int mtu) 1901{ 1902 struct tok_info *ti = (struct tok_info *) dev->priv; 1903 1904 if (ti->ring_speed == 16 && mtu > ti->maxmtu16) 1905 return -EINVAL; 1906 if (ti->ring_speed == 4 && mtu > ti->maxmtu4) 1907 return -EINVAL; 1908 dev->mtu = mtu; 1909 return 0; 1910} 1911 1912/*****************************************************************************/ 1913#ifdef MODULE 1914 1915/* 3COM 3C619C supports 8 interrupts, 32 I/O ports */ 1916static struct net_device *dev_ibmtr[IBMTR_MAX_ADAPTERS]; 1917static int io[IBMTR_MAX_ADAPTERS] = { 0xa20, 0xa24 }; 1918static int irq[IBMTR_MAX_ADAPTERS]; 1919static int mem[IBMTR_MAX_ADAPTERS]; 1920 1921MODULE_LICENSE("GPL"); 1922 1923module_param_array(io, int, NULL, 0); 1924module_param_array(irq, int, NULL, 0); 1925module_param_array(mem, int, NULL, 0); 1926 1927static int __init ibmtr_init(void) 1928{ 1929 int i; 1930 int count=0; 1931 1932 find_turbo_adapters(io); 1933 1934 for (i = 0; io[i] && (i < IBMTR_MAX_ADAPTERS); i++) { 1935 struct net_device *dev; 1936 irq[i] = 0; 1937 mem[i] = 0; 1938 dev = alloc_trdev(sizeof(struct tok_info)); 1939 if (dev == NULL) { 1940 if (i == 0) 1941 return -ENOMEM; 1942 break; 1943 } 1944 dev->base_addr = io[i]; 1945 dev->irq = irq[i]; 1946 dev->mem_start = mem[i]; 1947 1948 if (ibmtr_probe_card(dev)) { 1949 free_netdev(dev); 1950 continue; 1951 } 1952 dev_ibmtr[i] = dev; 1953 count++; 1954 } 1955 if (count) return 0; 1956 printk("ibmtr: register_netdev() returned non-zero.\n"); 1957 return -EIO; 1958} 1959module_init(ibmtr_init); 1960 1961static void __exit ibmtr_cleanup(void) 1962{ 1963 int i; 1964 1965 for (i = 0; i < IBMTR_MAX_ADAPTERS; i++){ 1966 if (!dev_ibmtr[i]) 1967 continue; 1968 unregister_netdev(dev_ibmtr[i]); 1969 ibmtr_cleanup_card(dev_ibmtr[i]); 1970 free_netdev(dev_ibmtr[i]); 1971 } 1972} 1973module_exit(ibmtr_cleanup); 1974#endif 1975