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