drivers/net/ethernet/8390/apne.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Amiga Linux/68k 8390 based PCMCIA Ethernet Driver for the Amiga 1200
   4  *
   5  * (C) Copyright 1997 Alain Malek
   6  *                    (Alain.Malek@cryogen.com)
   7  *
   8  * ----------------------------------------------------------------------------
   9  *
  10  * This program is based on
  11  *
  12  * ne.c:       A general non-shared-memory NS8390 ethernet driver for linux
  13  *             Written 1992-94 by Donald Becker.
  14  *
  15  * 8390.c:     A general NS8390 ethernet driver core for linux.
  16  *             Written 1992-94 by Donald Becker.
  17  *
  18  * cnetdevice: A Sana-II ethernet driver for AmigaOS
  19  *             Written by Bruce Abbott (bhabbott@inhb.co.nz)
  20  *
  21  * ----------------------------------------------------------------------------
  22  *
  23  */
  24
  25
  26 #include <linux/module.h>
  27 #include <linux/kernel.h>
  28 #include <linux/errno.h>
  29 #include <linux/pci.h>
  30 #include <linux/init.h>
  31 #include <linux/delay.h>
  32 #include <linux/netdevice.h>
  33 #include <linux/etherdevice.h>
  34 #include <linux/interrupt.h>
  35 #include <linux/jiffies.h>
  36
  37 #include <asm/io.h>
  38 #include <asm/setup.h>
  39 #include <asm/amigaints.h>
  40 #include <asm/amigahw.h>
  41 #include <asm/amigayle.h>
  42 #include <asm/amipcmcia.h>
  43
  44 #include "8390.h"
  45
  46 /* ---- No user-serviceable parts below ---- */
  47
  48 #define DRV_NAME "apne"
  49
  50 #define NE_BASE  (dev->base_addr)
  51 #define NE_CMD                  0x00
  52 #define NE_DATAPORT             0x10            /* NatSemi-defined port window offset. */
  53 #define NE_RESET                0x1f            /* Issue a read to reset, a write to clear. */
  54 #define NE_IO_EXTENT            0x20
  55
  56 #define NE_EN0_ISR              0x07
  57 #define NE_EN0_DCFG             0x0e
  58
  59 #define NE_EN0_RSARLO           0x08
  60 #define NE_EN0_RSARHI           0x09
  61 #define NE_EN0_RCNTLO           0x0a
  62 #define NE_EN0_RXCR             0x0c
  63 #define NE_EN0_TXCR             0x0d
  64 #define NE_EN0_RCNTHI           0x0b
  65 #define NE_EN0_IMR              0x0f
  66
  67 #define NE1SM_START_PG  0x20    /* First page of TX buffer */
  68 #define NE1SM_STOP_PG   0x40    /* Last page +1 of RX ring */
  69 #define NESM_START_PG   0x40    /* First page of TX buffer */
  70 #define NESM_STOP_PG    0x80    /* Last page +1 of RX ring */
  71
  72
  73 static int apne_probe1(struct net_device *dev, int ioaddr);
  74
  75 static void apne_reset_8390(struct net_device *dev);
  76 static void apne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
  77                           int ring_page);
  78 static void apne_block_input(struct net_device *dev, int count,
  79                                                                 struct sk_buff *skb, int ring_offset);
  80 static void apne_block_output(struct net_device *dev, const int count,
  81                                                         const unsigned char *buf, const int start_page);
  82 static irqreturn_t apne_interrupt(int irq, void *dev_id);
  83
  84 static int init_pcmcia(void);
  85
  86 /* IO base address used for nic */
  87
  88 #define IOBASE 0x300
  89
  90 /*
  91    use MANUAL_CONFIG and MANUAL_OFFSET for enabling IO by hand
  92    you can find the values to use by looking at the cnet.device
  93    config file example (the default values are for the CNET40BC card)
  94 */
  95
  96 /*
  97 #define MANUAL_CONFIG 0x20
  98 #define MANUAL_OFFSET 0x3f8
  99
 100 #define MANUAL_HWADDR0 0x00
 101 #define MANUAL_HWADDR1 0x12
 102 #define MANUAL_HWADDR2 0x34
 103 #define MANUAL_HWADDR3 0x56
 104 #define MANUAL_HWADDR4 0x78
 105 #define MANUAL_HWADDR5 0x9a
 106 */
 107
 108 static const char version[] =
 109     "apne.c:v1.1 7/10/98 Alain Malek (Alain.Malek@cryogen.ch)\n";
 110
 111 static int apne_owned;  /* signal if card already owned */
 112
 113 static u32 apne_msg_enable;
 114 module_param_named(msg_enable, apne_msg_enable, uint, 0444);
 115 MODULE_PARM_DESC(msg_enable, "Debug message level (see linux/netdevice.h for bitmap)");
 116
 117 static struct net_device * __init apne_probe(void)
 118 {
 119         struct net_device *dev;
 120         struct ei_device *ei_local;
 121
 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         pr_info("Looking for PCMCIA ethernet card : ");
 137
 138         /* check if a card is inserted */
 139         if (!(PCMCIA_INSERTED)) {
 140                 pr_cont("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         ei_local = netdev_priv(dev);
 148         ei_local->msg_enable = apne_msg_enable;
 149
 150         /* disable pcmcia irq for readtuple */
 151         pcmcia_disable_irq();
 152
 153 #ifndef MANUAL_CONFIG
 154         if ((pcmcia_copy_tuple(CISTPL_FUNCID, tuple, 8) < 3) ||
 155                 (tuple[2] != CISTPL_FUNCID_NETWORK)) {
 156                 pr_cont("not an ethernet card\n");
 157                 /* XXX: shouldn't we re-enable irq here? */
 158                 free_netdev(dev);
 159                 return ERR_PTR(-ENODEV);
 160         }
 161 #endif
 162
 163         pr_cont("ethernet PCMCIA card inserted\n");
 164
 165         if (!init_pcmcia()) {
 166                 /* XXX: shouldn't we re-enable irq here? */
 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
 194 static 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 ((apne_msg_enable & NETIF_MSG_DRV) && (version_printed++ == 0))
 207                 netdev_info(dev, version);
 208
 209     netdev_info(dev, "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                         pr_cont(" 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         pr_cont(" 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     eth_hw_addr_set(dev, SA_prom);
 319
 320     pr_cont(" %pM\n", dev->dev_addr);
 321
 322     netdev_info(dev, "%s found.\n", name);
 323
 324     ei_status.name = name;
 325     ei_status.tx_start_page = start_page;
 326     ei_status.stop_page = stop_page;
 327     ei_status.word16 = (wordlength == 2);
 328
 329     ei_status.rx_start_page = start_page + TX_PAGES;
 330
 331     ei_status.reset_8390 = &apne_reset_8390;
 332     ei_status.block_input = &apne_block_input;
 333     ei_status.block_output = &apne_block_output;
 334     ei_status.get_8390_hdr = &apne_get_8390_hdr;
 335
 336     NS8390_init(dev, 0);
 337
 338     pcmcia_ack_int(pcmcia_get_intreq());                /* ack PCMCIA int req */
 339     pcmcia_enable_irq();
 340
 341     apne_owned = 1;
 342
 343     return 0;
 344 }
 345
 346 /* Hard reset the card.  This used to pause for the same period that a
 347    8390 reset command required, but that shouldn't be necessary. */
 348 static void
 349 apne_reset_8390(struct net_device *dev)
 350 {
 351     unsigned long reset_start_time = jiffies;
 352     struct ei_device *ei_local = netdev_priv(dev);
 353
 354     init_pcmcia();
 355
 356     netif_dbg(ei_local, hw, dev, "resetting the 8390 t=%ld...\n", 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                 netdev_err(dev, "ne_reset_8390() did not complete.\n");
 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
 376 static void
 377 apne_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         netdev_err(dev, "DMAing conflict in ne_get_8390_hdr "
 388                    "[DMAstat:%d][irqlock:%d][intr:%d].\n",
 389                    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
 423 static void
 424 apne_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                 netdev_err(dev, "DMAing conflict in ne_block_input "
 435                            "[DMAstat:%d][irqlock:%d][intr:%d].\n",
 436                            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 = 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
 464 static void
 465 apne_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                 netdev_err(dev, "DMAing conflict in ne_block_output."
 483                            "[DMAstat:%d][irqlock:%d][intr:%d]\n",
 484                            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                 netdev_warn(dev, "timeout waiting for Tx RDC.\n");
 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
 524 static 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 (apne_msg_enable & NETIF_MSG_INTR)
 538         pr_debug("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 static struct net_device *apne_dev;
 547
 548 static int __init apne_module_init(void)
 549 {
 550         apne_dev = apne_probe();
 551         return PTR_ERR_OR_ZERO(apne_dev);
 552 }
 553
 554 static void __exit apne_module_exit(void)
 555 {
 556         unregister_netdev(apne_dev);
 557
 558         pcmcia_disable_irq();
 559
 560         free_irq(IRQ_AMIGA_PORTS, apne_dev);
 561
 562         pcmcia_reset();
 563
 564         release_region(IOBASE, 0x20);
 565
 566         free_netdev(apne_dev);
 567 }
 568 module_init(apne_module_init);
 569 module_exit(apne_module_exit);
 570
 571 static int init_pcmcia(void)
 572 {
 573         u_char config;
 574 #ifndef MANUAL_CONFIG
 575         u_char tuple[32];
 576         int offset_len;
 577 #endif
 578         u_long offset;
 579
 580         pcmcia_reset();
 581         pcmcia_program_voltage(PCMCIA_0V);
 582         pcmcia_access_speed(PCMCIA_SPEED_250NS);
 583         pcmcia_write_enable();
 584
 585 #ifdef MANUAL_CONFIG
 586         config = MANUAL_CONFIG;
 587 #else
 588         /* get and write config byte to enable IO port */
 589
 590         if (pcmcia_copy_tuple(CISTPL_CFTABLE_ENTRY, tuple, 32) < 3)
 591                 return 0;
 592
 593         config = tuple[2] & 0x3f;
 594 #endif
 595 #ifdef MANUAL_OFFSET
 596         offset = MANUAL_OFFSET;
 597 #else
 598         if (pcmcia_copy_tuple(CISTPL_CONFIG, tuple, 32) < 6)
 599                 return 0;
 600
 601         offset_len = (tuple[2] & 0x3) + 1;
 602         offset = 0;
 603         while(offset_len--) {
 604                 offset = (offset << 8) | tuple[4+offset_len];
 605         }
 606 #endif
 607
 608         out_8(GAYLE_ATTRIBUTE+offset, config);
 609
 610         return 1;
 611 }
 612
 613 MODULE_DESCRIPTION("National Semiconductor 8390 Amiga PCMCIA ethernet driver");
 614 MODULE_LICENSE("GPL");