1/* 2 * Amiga Linux/68k 8390 based PCMCIA Ethernet Driver for the Amiga 1200 3 * 4 * (C) Copyright 1997 Alain Malek 5 * (Alain.Malek@cryogen.com) 6 * 7 * ---------------------------------------------------------------------------- 8 * 9 * This program is based on 10 * 11 * ne.c: A general non-shared-memory NS8390 ethernet driver for linux 12 * Written 1992-94 by Donald Becker. 13 * 14 * 8390.c: A general NS8390 ethernet driver core for linux. 15 * Written 1992-94 by Donald Becker. 16 * 17 * cnetdevice: A Sana-II ethernet driver for AmigaOS 18 * Written by Bruce Abbott (bhabbott@inhb.co.nz) 19 * 20 * ---------------------------------------------------------------------------- 21 * 22 * This file is subject to the terms and conditions of the GNU General Public 23 * License. See the file COPYING in the main directory of the Linux 24 * distribution for more details. 25 * 26 * ---------------------------------------------------------------------------- 27 * 28 */ 29 30 31#include <linux/module.h> 32#include <linux/kernel.h> 33#include <linux/errno.h> 34#include <linux/pci.h> 35#include <linux/init.h> 36#include <linux/delay.h> 37#include <linux/netdevice.h> 38#include <linux/etherdevice.h> 39#include <linux/interrupt.h> 40#include <linux/jiffies.h> 41 42#include <asm/system.h> 43#include <asm/io.h> 44#include <asm/setup.h> 45#include <asm/amigaints.h> 46#include <asm/amigahw.h> 47#include <asm/amigayle.h> 48#include <asm/amipcmcia.h> 49 50#include "8390.h" 51 52/* ---- No user-serviceable parts below ---- */ 53 54#define DRV_NAME "apne" 55 56#define NE_BASE (dev->base_addr) 57#define NE_CMD 0x00 58#define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */ 59#define NE_RESET 0x1f /* Issue a read to reset, a write to clear. */ 60#define NE_IO_EXTENT 0x20 61 62#define NE_EN0_ISR 0x07 63#define NE_EN0_DCFG 0x0e 64 65#define NE_EN0_RSARLO 0x08 66#define NE_EN0_RSARHI 0x09 67#define NE_EN0_RCNTLO 0x0a 68#define NE_EN0_RXCR 0x0c 69#define NE_EN0_TXCR 0x0d 70#define NE_EN0_RCNTHI 0x0b 71#define NE_EN0_IMR 0x0f 72 73#define NE1SM_START_PG 0x20 /* First page of TX buffer */ 74#define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */ 75#define NESM_START_PG 0x40 /* First page of TX buffer */ 76#define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */ 77 78 79struct net_device * __init apne_probe(int unit); 80static int apne_probe1(struct net_device *dev, int ioaddr); 81 82static void apne_reset_8390(struct net_device *dev); 83static void apne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, 84 int ring_page); 85static void apne_block_input(struct net_device *dev, int count, 86 struct sk_buff *skb, int ring_offset); 87static void apne_block_output(struct net_device *dev, const int count, 88 const unsigned char *buf, const int start_page); 89static irqreturn_t apne_interrupt(int irq, void *dev_id); 90 91static int init_pcmcia(void); 92 93/* IO base address used for nic */ 94 95#define IOBASE 0x300 96 97/* 98 use MANUAL_CONFIG and MANUAL_OFFSET for enabling IO by hand 99 you can find the values to use by looking at the cnet.device 100 config file example (the default values are for the CNET40BC card) 101*/ 102 103/* 104#define MANUAL_CONFIG 0x20 105#define MANUAL_OFFSET 0x3f8 106 107#define MANUAL_HWADDR0 0x00 108#define MANUAL_HWADDR1 0x12 109#define MANUAL_HWADDR2 0x34 110#define MANUAL_HWADDR3 0x56 111#define MANUAL_HWADDR4 0x78 112#define MANUAL_HWADDR5 0x9a 113*/ 114 115static const char version[] = 116 "apne.c:v1.1 7/10/98 Alain Malek (Alain.Malek@cryogen.ch)\n"; 117 118static int apne_owned; /* signal if card already owned */ 119 120struct net_device * __init apne_probe(int unit) 121{ 122 struct net_device *dev; 123#ifndef MANUAL_CONFIG 124 char tuple[8]; 125#endif 126 int err; 127 128 if (!MACH_IS_AMIGA) 129 return ERR_PTR(-ENODEV); 130 131 if (apne_owned) 132 return ERR_PTR(-ENODEV); 133 134 if ( !(AMIGAHW_PRESENT(PCMCIA)) ) 135 return ERR_PTR(-ENODEV); 136 137 printk("Looking for PCMCIA ethernet card : "); 138 139 /* check if a card is inserted */ 140 if (!(PCMCIA_INSERTED)) { 141 printk("NO PCMCIA card inserted\n"); 142 return ERR_PTR(-ENODEV); 143 } 144 145 dev = alloc_ei_netdev(); 146 if (!dev) 147 return ERR_PTR(-ENOMEM); 148 if (unit >= 0) { 149 sprintf(dev->name, "eth%d", unit); 150 netdev_boot_setup_check(dev); 151 } 152 153 /* disable pcmcia irq for readtuple */ 154 pcmcia_disable_irq(); 155 156#ifndef MANUAL_CONFIG 157 if ((pcmcia_copy_tuple(CISTPL_FUNCID, tuple, 8) < 3) || 158 (tuple[2] != CISTPL_FUNCID_NETWORK)) { 159 printk("not an ethernet card\n"); 160 /* XXX: shouldn't we re-enable irq here? */ 161 free_netdev(dev); 162 return ERR_PTR(-ENODEV); 163 } 164#endif 165 166 printk("ethernet PCMCIA card inserted\n"); 167 168 if (!init_pcmcia()) { 169 /* XXX: shouldn't we re-enable irq here? */ 170 free_netdev(dev); 171 return ERR_PTR(-ENODEV); 172 } 173 174 if (!request_region(IOBASE, 0x20, DRV_NAME)) { 175 free_netdev(dev); 176 return ERR_PTR(-EBUSY); 177 } 178 179 err = apne_probe1(dev, IOBASE); 180 if (err) { 181 release_region(IOBASE, 0x20); 182 free_netdev(dev); 183 return ERR_PTR(err); 184 } 185 err = register_netdev(dev); 186 if (!err) 187 return dev; 188 189 pcmcia_disable_irq(); 190 free_irq(IRQ_AMIGA_PORTS, dev); 191 pcmcia_reset(); 192 release_region(IOBASE, 0x20); 193 free_netdev(dev); 194 return ERR_PTR(err); 195} 196 197static int __init apne_probe1(struct net_device *dev, int ioaddr) 198{ 199 int i; 200 unsigned char SA_prom[32]; 201 int wordlength = 2; 202 const char *name = NULL; 203 int start_page, stop_page; 204#ifndef MANUAL_HWADDR0 205 int neX000, ctron; 206#endif 207 static unsigned version_printed; 208 209 if (ei_debug && version_printed++ == 0) 210 printk(version); 211 212 printk("PCMCIA NE*000 ethercard probe"); 213 214 /* Reset card. Who knows what dain-bramaged state it was left in. */ 215 { unsigned long reset_start_time = jiffies; 216 217 outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET); 218 219 while ((inb(ioaddr + NE_EN0_ISR) & ENISR_RESET) == 0) 220 if (time_after(jiffies, reset_start_time + 2*HZ/100)) { 221 printk(" not found (no reset ack).\n"); 222 return -ENODEV; 223 } 224 225 outb(0xff, ioaddr + NE_EN0_ISR); /* Ack all intr. */ 226 } 227 228#ifndef MANUAL_HWADDR0 229 230 /* Read the 16 bytes of station address PROM. 231 We must first initialize registers, similar to NS8390_init(eifdev, 0). 232 We can't reliably read the SAPROM address without this. 233 (I learned the hard way!). */ 234 { 235 struct {unsigned long value, offset; } program_seq[] = { 236 {E8390_NODMA+E8390_PAGE0+E8390_STOP, NE_CMD}, /* Select page 0*/ 237 {0x48, NE_EN0_DCFG}, /* Set byte-wide (0x48) access. */ 238 {0x00, NE_EN0_RCNTLO}, /* Clear the count regs. */ 239 {0x00, NE_EN0_RCNTHI}, 240 {0x00, NE_EN0_IMR}, /* Mask completion irq. */ 241 {0xFF, NE_EN0_ISR}, 242 {E8390_RXOFF, NE_EN0_RXCR}, /* 0x20 Set to monitor */ 243 {E8390_TXOFF, NE_EN0_TXCR}, /* 0x02 and loopback mode. */ 244 {32, NE_EN0_RCNTLO}, 245 {0x00, NE_EN0_RCNTHI}, 246 {0x00, NE_EN0_RSARLO}, /* DMA starting at 0x0000. */ 247 {0x00, NE_EN0_RSARHI}, 248 {E8390_RREAD+E8390_START, NE_CMD}, 249 }; 250 for (i = 0; i < ARRAY_SIZE(program_seq); i++) { 251 outb(program_seq[i].value, ioaddr + program_seq[i].offset); 252 } 253 254 } 255 for(i = 0; i < 32 /*sizeof(SA_prom)*/; i+=2) { 256 SA_prom[i] = inb(ioaddr + NE_DATAPORT); 257 SA_prom[i+1] = inb(ioaddr + NE_DATAPORT); 258 if (SA_prom[i] != SA_prom[i+1]) 259 wordlength = 1; 260 } 261 262 /* At this point, wordlength *only* tells us if the SA_prom is doubled 263 up or not because some broken PCI cards don't respect the byte-wide 264 request in program_seq above, and hence don't have doubled up values. 265 These broken cards would otherwise be detected as an ne1000. */ 266 267 if (wordlength == 2) 268 for (i = 0; i < 16; i++) 269 SA_prom[i] = SA_prom[i+i]; 270 271 if (wordlength == 2) { 272 /* We must set the 8390 for word mode. */ 273 outb(0x49, ioaddr + NE_EN0_DCFG); 274 start_page = NESM_START_PG; 275 stop_page = NESM_STOP_PG; 276 } else { 277 start_page = NE1SM_START_PG; 278 stop_page = NE1SM_STOP_PG; 279 } 280 281 neX000 = (SA_prom[14] == 0x57 && SA_prom[15] == 0x57); 282 ctron = (SA_prom[0] == 0x00 && SA_prom[1] == 0x00 && SA_prom[2] == 0x1d); 283 284 /* Set up the rest of the parameters. */ 285 if (neX000) { 286 name = (wordlength == 2) ? "NE2000" : "NE1000"; 287 } else if (ctron) { 288 name = (wordlength == 2) ? "Ctron-8" : "Ctron-16"; 289 start_page = 0x01; 290 stop_page = (wordlength == 2) ? 0x40 : 0x20; 291 } else { 292 printk(" not found.\n"); 293 return -ENXIO; 294 295 } 296 297#else 298 wordlength = 2; 299 /* We must set the 8390 for word mode. */ 300 outb(0x49, ioaddr + NE_EN0_DCFG); 301 start_page = NESM_START_PG; 302 stop_page = NESM_STOP_PG; 303 304 SA_prom[0] = MANUAL_HWADDR0; 305 SA_prom[1] = MANUAL_HWADDR1; 306 SA_prom[2] = MANUAL_HWADDR2; 307 SA_prom[3] = MANUAL_HWADDR3; 308 SA_prom[4] = MANUAL_HWADDR4; 309 SA_prom[5] = MANUAL_HWADDR5; 310 name = "NE2000"; 311#endif 312 313 dev->base_addr = ioaddr; 314 dev->irq = IRQ_AMIGA_PORTS; 315 dev->netdev_ops = &ei_netdev_ops; 316 317 /* Install the Interrupt handler */ 318 i = request_irq(dev->irq, apne_interrupt, IRQF_SHARED, DRV_NAME, dev); 319 if (i) return i; 320 321 for (i = 0; i < ETH_ALEN; i++) 322 dev->dev_addr[i] = SA_prom[i]; 323 324 printk(" %pM\n", dev->dev_addr); 325 326 printk("%s: %s found.\n", dev->name, name); 327 328 ei_status.name = name; 329 ei_status.tx_start_page = start_page; 330 ei_status.stop_page = stop_page; 331 ei_status.word16 = (wordlength == 2); 332 333 ei_status.rx_start_page = start_page + TX_PAGES; 334 335 ei_status.reset_8390 = &apne_reset_8390; 336 ei_status.block_input = &apne_block_input; 337 ei_status.block_output = &apne_block_output; 338 ei_status.get_8390_hdr = &apne_get_8390_hdr; 339 340 NS8390_init(dev, 0); 341 342 pcmcia_ack_int(pcmcia_get_intreq()); /* ack PCMCIA int req */ 343 pcmcia_enable_irq(); 344 345 apne_owned = 1; 346 347 return 0; 348} 349 350/* Hard reset the card. This used to pause for the same period that a 351 8390 reset command required, but that shouldn't be necessary. */ 352static void 353apne_reset_8390(struct net_device *dev) 354{ 355 unsigned long reset_start_time = jiffies; 356 357 init_pcmcia(); 358 359 if (ei_debug > 1) printk("resetting the 8390 t=%ld...", jiffies); 360 361 outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET); 362 363 ei_status.txing = 0; 364 ei_status.dmaing = 0; 365 366 /* This check _should_not_ be necessary, omit eventually. */ 367 while ((inb(NE_BASE+NE_EN0_ISR) & ENISR_RESET) == 0) 368 if (time_after(jiffies, reset_start_time + 2*HZ/100)) { 369 printk("%s: ne_reset_8390() did not complete.\n", dev->name); 370 break; 371 } 372 outb(ENISR_RESET, NE_BASE + NE_EN0_ISR); /* Ack intr. */ 373} 374 375/* Grab the 8390 specific header. Similar to the block_input routine, but 376 we don't need to be concerned with ring wrap as the header will be at 377 the start of a page, so we optimize accordingly. */ 378 379static void 380apne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page) 381{ 382 383 int nic_base = dev->base_addr; 384 int cnt; 385 char *ptrc; 386 short *ptrs; 387 388 /* This *shouldn't* happen. If it does, it's the last thing you'll see */ 389 if (ei_status.dmaing) { 390 printk("%s: DMAing conflict in ne_get_8390_hdr " 391 "[DMAstat:%d][irqlock:%d][intr:%d].\n", 392 dev->name, ei_status.dmaing, ei_status.irqlock, dev->irq); 393 return; 394 } 395 396 ei_status.dmaing |= 0x01; 397 outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD); 398 outb(ENISR_RDC, nic_base + NE_EN0_ISR); 399 outb(sizeof(struct e8390_pkt_hdr), nic_base + NE_EN0_RCNTLO); 400 outb(0, nic_base + NE_EN0_RCNTHI); 401 outb(0, nic_base + NE_EN0_RSARLO); /* On page boundary */ 402 outb(ring_page, nic_base + NE_EN0_RSARHI); 403 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); 404 405 if (ei_status.word16) { 406 ptrs = (short*)hdr; 407 for(cnt = 0; cnt < (sizeof(struct e8390_pkt_hdr)>>1); cnt++) 408 *ptrs++ = inw(NE_BASE + NE_DATAPORT); 409 } else { 410 ptrc = (char*)hdr; 411 for(cnt = 0; cnt < sizeof(struct e8390_pkt_hdr); cnt++) 412 *ptrc++ = inb(NE_BASE + NE_DATAPORT); 413 } 414 415 outb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr. */ 416 ei_status.dmaing &= ~0x01; 417 418 le16_to_cpus(&hdr->count); 419} 420 421/* Block input and output, similar to the Crynwr packet driver. If you 422 are porting to a new ethercard, look at the packet driver source for hints. 423 The NEx000 doesn't share the on-board packet memory -- you have to put 424 the packet out through the "remote DMA" dataport using outb. */ 425 426static void 427apne_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset) 428{ 429 int nic_base = dev->base_addr; 430 char *buf = skb->data; 431 char *ptrc; 432 short *ptrs; 433 int cnt; 434 435 /* This *shouldn't* happen. If it does, it's the last thing you'll see */ 436 if (ei_status.dmaing) { 437 printk("%s: DMAing conflict in ne_block_input " 438 "[DMAstat:%d][irqlock:%d][intr:%d].\n", 439 dev->name, ei_status.dmaing, ei_status.irqlock, dev->irq); 440 return; 441 } 442 ei_status.dmaing |= 0x01; 443 outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD); 444 outb(ENISR_RDC, nic_base + NE_EN0_ISR); 445 outb(count & 0xff, nic_base + NE_EN0_RCNTLO); 446 outb(count >> 8, nic_base + NE_EN0_RCNTHI); 447 outb(ring_offset & 0xff, nic_base + NE_EN0_RSARLO); 448 outb(ring_offset >> 8, nic_base + NE_EN0_RSARHI); 449 outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); 450 if (ei_status.word16) { 451 ptrs = (short*)buf; 452 for (cnt = 0; cnt < (count>>1); cnt++) 453 *ptrs++ = inw(NE_BASE + NE_DATAPORT); 454 if (count & 0x01) { 455 buf[count-1] = inb(NE_BASE + NE_DATAPORT); 456 } 457 } else { 458 ptrc = (char*)buf; 459 for (cnt = 0; cnt < count; cnt++) 460 *ptrc++ = inb(NE_BASE + NE_DATAPORT); 461 } 462 463 outb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr. */ 464 ei_status.dmaing &= ~0x01; 465} 466 467static void 468apne_block_output(struct net_device *dev, int count, 469 const unsigned char *buf, const int start_page) 470{ 471 int nic_base = NE_BASE; 472 unsigned long dma_start; 473 char *ptrc; 474 short *ptrs; 475 int cnt; 476 477 /* Round the count up for word writes. Do we need to do this? 478 What effect will an odd byte count have on the 8390? 479 I should check someday. */ 480 if (ei_status.word16 && (count & 0x01)) 481 count++; 482 483 /* This *shouldn't* happen. If it does, it's the last thing you'll see */ 484 if (ei_status.dmaing) { 485 printk("%s: DMAing conflict in ne_block_output." 486 "[DMAstat:%d][irqlock:%d][intr:%d]\n", 487 dev->name, ei_status.dmaing, ei_status.irqlock, dev->irq); 488 return; 489 } 490 ei_status.dmaing |= 0x01; 491 /* We should already be in page 0, but to be safe... */ 492 outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD); 493 494 outb(ENISR_RDC, nic_base + NE_EN0_ISR); 495 496 /* Now the normal output. */ 497 outb(count & 0xff, nic_base + NE_EN0_RCNTLO); 498 outb(count >> 8, nic_base + NE_EN0_RCNTHI); 499 outb(0x00, nic_base + NE_EN0_RSARLO); 500 outb(start_page, nic_base + NE_EN0_RSARHI); 501 502 outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD); 503 if (ei_status.word16) { 504 ptrs = (short*)buf; 505 for (cnt = 0; cnt < count>>1; cnt++) 506 outw(*ptrs++, NE_BASE+NE_DATAPORT); 507 } else { 508 ptrc = (char*)buf; 509 for (cnt = 0; cnt < count; cnt++) 510 outb(*ptrc++, NE_BASE + NE_DATAPORT); 511 } 512 513 dma_start = jiffies; 514 515 while ((inb(NE_BASE + NE_EN0_ISR) & ENISR_RDC) == 0) 516 if (time_after(jiffies, dma_start + 2*HZ/100)) { /* 20ms */ 517 printk("%s: timeout waiting for Tx RDC.\n", dev->name); 518 apne_reset_8390(dev); 519 NS8390_init(dev,1); 520 break; 521 } 522 523 outb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr. */ 524 ei_status.dmaing &= ~0x01; 525} 526 527static irqreturn_t apne_interrupt(int irq, void *dev_id) 528{ 529 unsigned char pcmcia_intreq; 530 531 if (!(gayle.inten & GAYLE_IRQ_IRQ)) 532 return IRQ_NONE; 533 534 pcmcia_intreq = pcmcia_get_intreq(); 535 536 if (!(pcmcia_intreq & GAYLE_IRQ_IRQ)) { 537 pcmcia_ack_int(pcmcia_intreq); 538 return IRQ_NONE; 539 } 540 if (ei_debug > 3) 541 printk("pcmcia intreq = %x\n", pcmcia_intreq); 542 pcmcia_disable_irq(); /* to get rid of the sti() within ei_interrupt */ 543 ei_interrupt(irq, dev_id); 544 pcmcia_ack_int(pcmcia_get_intreq()); 545 pcmcia_enable_irq(); 546 return IRQ_HANDLED; 547} 548 549#ifdef MODULE 550static struct net_device *apne_dev; 551 552static int __init apne_module_init(void) 553{ 554 apne_dev = apne_probe(-1); 555 if (IS_ERR(apne_dev)) 556 return PTR_ERR(apne_dev); 557 return 0; 558} 559 560static void __exit apne_module_exit(void) 561{ 562 unregister_netdev(apne_dev); 563 564 pcmcia_disable_irq(); 565 566 free_irq(IRQ_AMIGA_PORTS, apne_dev); 567 568 pcmcia_reset(); 569 570 release_region(IOBASE, 0x20); 571 572 free_netdev(apne_dev); 573} 574module_init(apne_module_init); 575module_exit(apne_module_exit); 576#endif 577 578static int init_pcmcia(void) 579{ 580 u_char config; 581#ifndef MANUAL_CONFIG 582 u_char tuple[32]; 583 int offset_len; 584#endif 585 u_long offset; 586 587 pcmcia_reset(); 588 pcmcia_program_voltage(PCMCIA_0V); 589 pcmcia_access_speed(PCMCIA_SPEED_250NS); 590 pcmcia_write_enable(); 591 592#ifdef MANUAL_CONFIG 593 config = MANUAL_CONFIG; 594#else 595 /* get and write config byte to enable IO port */ 596 597 if (pcmcia_copy_tuple(CISTPL_CFTABLE_ENTRY, tuple, 32) < 3) 598 return 0; 599 600 config = tuple[2] & 0x3f; 601#endif 602#ifdef MANUAL_OFFSET 603 offset = MANUAL_OFFSET; 604#else 605 if (pcmcia_copy_tuple(CISTPL_CONFIG, tuple, 32) < 6) 606 return 0; 607 608 offset_len = (tuple[2] & 0x3) + 1; 609 offset = 0; 610 while(offset_len--) { 611 offset = (offset << 8) | tuple[4+offset_len]; 612 } 613#endif 614 615 out_8(GAYLE_ATTRIBUTE+offset, config); 616 617 return 1; 618} 619 620MODULE_LICENSE("GPL"); 621