Free Electrons

Embedded Linux Experts

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
/*
 * Amiga Linux/68k 8390 based PCMCIA Ethernet Driver for the Amiga 1200
 *
 * (C) Copyright 1997 Alain Malek
 *                    (Alain.Malek@cryogen.com)
 *
 * ----------------------------------------------------------------------------
 *
 * This program is based on
 *
 * ne.c:       A general non-shared-memory NS8390 ethernet driver for linux
 *             Written 1992-94 by Donald Becker.
 *
 * 8390.c:     A general NS8390 ethernet driver core for linux.
 *             Written 1992-94 by Donald Becker.
 *
 * cnetdevice: A Sana-II ethernet driver for AmigaOS
 *             Written by Bruce Abbott (bhabbott@inhb.co.nz)
 *
 * ----------------------------------------------------------------------------
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file COPYING in the main directory of the Linux
 * distribution for more details.
 *
 * ----------------------------------------------------------------------------
 *
 */


#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/interrupt.h>
#include <linux/jiffies.h>

#include <asm/io.h>
#include <asm/setup.h>
#include <asm/amigaints.h>
#include <asm/amigahw.h>
#include <asm/amigayle.h>
#include <asm/amipcmcia.h>

#include "8390.h"

/* ---- No user-serviceable parts below ---- */

#define DRV_NAME "apne"

#define NE_BASE	 (dev->base_addr)
#define NE_CMD	 		0x00
#define NE_DATAPORT		0x10            /* NatSemi-defined port window offset. */
#define NE_RESET		0x1f            /* Issue a read to reset, a write to clear. */
#define NE_IO_EXTENT	        0x20

#define NE_EN0_ISR		0x07
#define NE_EN0_DCFG		0x0e

#define NE_EN0_RSARLO	        0x08
#define NE_EN0_RSARHI	        0x09
#define NE_EN0_RCNTLO	        0x0a
#define NE_EN0_RXCR		0x0c
#define NE_EN0_TXCR		0x0d
#define NE_EN0_RCNTHI	        0x0b
#define NE_EN0_IMR		0x0f

#define NE1SM_START_PG	0x20	/* First page of TX buffer */
#define NE1SM_STOP_PG 	0x40	/* Last page +1 of RX ring */
#define NESM_START_PG	0x40	/* First page of TX buffer */
#define NESM_STOP_PG	0x80	/* Last page +1 of RX ring */


struct net_device * __init apne_probe(int unit);
static int apne_probe1(struct net_device *dev, int ioaddr);

static void apne_reset_8390(struct net_device *dev);
static void apne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
			  int ring_page);
static void apne_block_input(struct net_device *dev, int count,
								struct sk_buff *skb, int ring_offset);
static void apne_block_output(struct net_device *dev, const int count,
							const unsigned char *buf, const int start_page);
static irqreturn_t apne_interrupt(int irq, void *dev_id);

static int init_pcmcia(void);

/* IO base address used for nic */

#define IOBASE 0x300

/*
   use MANUAL_CONFIG and MANUAL_OFFSET for enabling IO by hand
   you can find the values to use by looking at the cnet.device
   config file example (the default values are for the CNET40BC card)
*/

/*
#define MANUAL_CONFIG 0x20
#define MANUAL_OFFSET 0x3f8

#define MANUAL_HWADDR0 0x00
#define MANUAL_HWADDR1 0x12
#define MANUAL_HWADDR2 0x34
#define MANUAL_HWADDR3 0x56
#define MANUAL_HWADDR4 0x78
#define MANUAL_HWADDR5 0x9a
*/

static const char version[] =
    "apne.c:v1.1 7/10/98 Alain Malek (Alain.Malek@cryogen.ch)\n";

static int apne_owned;	/* signal if card already owned */

struct net_device * __init apne_probe(int unit)
{
	struct net_device *dev;
#ifndef MANUAL_CONFIG
	char tuple[8];
#endif
	int err;

	if (!MACH_IS_AMIGA)
		return ERR_PTR(-ENODEV);

	if (apne_owned)
		return ERR_PTR(-ENODEV);

	if ( !(AMIGAHW_PRESENT(PCMCIA)) )
		return ERR_PTR(-ENODEV);

	printk("Looking for PCMCIA ethernet card : ");

	/* check if a card is inserted */
	if (!(PCMCIA_INSERTED)) {
		printk("NO PCMCIA card inserted\n");
		return ERR_PTR(-ENODEV);
	}

	dev = alloc_ei_netdev();
	if (!dev)
		return ERR_PTR(-ENOMEM);
	if (unit >= 0) {
		sprintf(dev->name, "eth%d", unit);
		netdev_boot_setup_check(dev);
	}

	/* disable pcmcia irq for readtuple */
	pcmcia_disable_irq();

#ifndef MANUAL_CONFIG
	if ((pcmcia_copy_tuple(CISTPL_FUNCID, tuple, 8) < 3) ||
		(tuple[2] != CISTPL_FUNCID_NETWORK)) {
		printk("not an ethernet card\n");
		/* XXX: shouldn't we re-enable irq here? */
		free_netdev(dev);
		return ERR_PTR(-ENODEV);
	}
#endif

	printk("ethernet PCMCIA card inserted\n");

	if (!init_pcmcia()) {
		/* XXX: shouldn't we re-enable irq here? */
		free_netdev(dev);
		return ERR_PTR(-ENODEV);
	}

	if (!request_region(IOBASE, 0x20, DRV_NAME)) {
		free_netdev(dev);
		return ERR_PTR(-EBUSY);
	}

	err = apne_probe1(dev, IOBASE);
	if (err) {
		release_region(IOBASE, 0x20);
		free_netdev(dev);
		return ERR_PTR(err);
	}
	err = register_netdev(dev);
	if (!err)
		return dev;

	pcmcia_disable_irq();
	free_irq(IRQ_AMIGA_PORTS, dev);
	pcmcia_reset();
	release_region(IOBASE, 0x20);
	free_netdev(dev);
	return ERR_PTR(err);
}

static int __init apne_probe1(struct net_device *dev, int ioaddr)
{
    int i;
    unsigned char SA_prom[32];
    int wordlength = 2;
    const char *name = NULL;
    int start_page, stop_page;
#ifndef MANUAL_HWADDR0
    int neX000, ctron;
#endif
    static unsigned version_printed;

    if (ei_debug  &&  version_printed++ == 0)
	printk(version);

    printk("PCMCIA NE*000 ethercard probe");

    /* Reset card. Who knows what dain-bramaged state it was left in. */
    {	unsigned long reset_start_time = jiffies;

	outb(inb(ioaddr + NE_RESET), ioaddr + NE_RESET);

	while ((inb(ioaddr + NE_EN0_ISR) & ENISR_RESET) == 0)
		if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
			printk(" not found (no reset ack).\n");
			return -ENODEV;
		}

	outb(0xff, ioaddr + NE_EN0_ISR);		/* Ack all intr. */
    }

#ifndef MANUAL_HWADDR0

    /* Read the 16 bytes of station address PROM.
       We must first initialize registers, similar to NS8390_init(eifdev, 0).
       We can't reliably read the SAPROM address without this.
       (I learned the hard way!). */
    {
	struct {unsigned long value, offset; } program_seq[] = {
	    {E8390_NODMA+E8390_PAGE0+E8390_STOP, NE_CMD}, /* Select page 0*/
	    {0x48,	NE_EN0_DCFG},	/* Set byte-wide (0x48) access. */
	    {0x00,	NE_EN0_RCNTLO},	/* Clear the count regs. */
	    {0x00,	NE_EN0_RCNTHI},
	    {0x00,	NE_EN0_IMR},	/* Mask completion irq. */
	    {0xFF,	NE_EN0_ISR},
	    {E8390_RXOFF, NE_EN0_RXCR},	/* 0x20  Set to monitor */
	    {E8390_TXOFF, NE_EN0_TXCR},	/* 0x02  and loopback mode. */
	    {32,	NE_EN0_RCNTLO},
	    {0x00,	NE_EN0_RCNTHI},
	    {0x00,	NE_EN0_RSARLO},	/* DMA starting at 0x0000. */
	    {0x00,	NE_EN0_RSARHI},
	    {E8390_RREAD+E8390_START, NE_CMD},
	};
	for (i = 0; i < ARRAY_SIZE(program_seq); i++) {
	    outb(program_seq[i].value, ioaddr + program_seq[i].offset);
	}

    }
    for(i = 0; i < 32 /*sizeof(SA_prom)*/; i+=2) {
	SA_prom[i] = inb(ioaddr + NE_DATAPORT);
	SA_prom[i+1] = inb(ioaddr + NE_DATAPORT);
	if (SA_prom[i] != SA_prom[i+1])
	    wordlength = 1;
    }

    /*	At this point, wordlength *only* tells us if the SA_prom is doubled
	up or not because some broken PCI cards don't respect the byte-wide
	request in program_seq above, and hence don't have doubled up values.
	These broken cards would otherwise be detected as an ne1000.  */

    if (wordlength == 2)
	for (i = 0; i < 16; i++)
		SA_prom[i] = SA_prom[i+i];

    if (wordlength == 2) {
	/* We must set the 8390 for word mode. */
	outb(0x49, ioaddr + NE_EN0_DCFG);
	start_page = NESM_START_PG;
	stop_page = NESM_STOP_PG;
    } else {
	start_page = NE1SM_START_PG;
	stop_page = NE1SM_STOP_PG;
    }

    neX000 = (SA_prom[14] == 0x57  &&  SA_prom[15] == 0x57);
    ctron =  (SA_prom[0] == 0x00 && SA_prom[1] == 0x00 && SA_prom[2] == 0x1d);

    /* Set up the rest of the parameters. */
    if (neX000) {
	name = (wordlength == 2) ? "NE2000" : "NE1000";
    } else if (ctron) {
	name = (wordlength == 2) ? "Ctron-8" : "Ctron-16";
	start_page = 0x01;
	stop_page = (wordlength == 2) ? 0x40 : 0x20;
    } else {
	printk(" not found.\n");
	return -ENXIO;

    }

#else
    wordlength = 2;
    /* We must set the 8390 for word mode. */
    outb(0x49, ioaddr + NE_EN0_DCFG);
    start_page = NESM_START_PG;
    stop_page = NESM_STOP_PG;

    SA_prom[0] = MANUAL_HWADDR0;
    SA_prom[1] = MANUAL_HWADDR1;
    SA_prom[2] = MANUAL_HWADDR2;
    SA_prom[3] = MANUAL_HWADDR3;
    SA_prom[4] = MANUAL_HWADDR4;
    SA_prom[5] = MANUAL_HWADDR5;
    name = "NE2000";
#endif

    dev->base_addr = ioaddr;
    dev->irq = IRQ_AMIGA_PORTS;
    dev->netdev_ops = &ei_netdev_ops;

    /* Install the Interrupt handler */
    i = request_irq(dev->irq, apne_interrupt, IRQF_SHARED, DRV_NAME, dev);
    if (i) return i;

    for (i = 0; i < ETH_ALEN; i++)
	dev->dev_addr[i] = SA_prom[i];

    printk(" %pM\n", dev->dev_addr);

    printk("%s: %s found.\n", dev->name, name);

    ei_status.name = name;
    ei_status.tx_start_page = start_page;
    ei_status.stop_page = stop_page;
    ei_status.word16 = (wordlength == 2);

    ei_status.rx_start_page = start_page + TX_PAGES;

    ei_status.reset_8390 = &apne_reset_8390;
    ei_status.block_input = &apne_block_input;
    ei_status.block_output = &apne_block_output;
    ei_status.get_8390_hdr = &apne_get_8390_hdr;

    NS8390_init(dev, 0);

    pcmcia_ack_int(pcmcia_get_intreq());		/* ack PCMCIA int req */
    pcmcia_enable_irq();

    apne_owned = 1;

    return 0;
}

/* Hard reset the card.  This used to pause for the same period that a
   8390 reset command required, but that shouldn't be necessary. */
static void
apne_reset_8390(struct net_device *dev)
{
    unsigned long reset_start_time = jiffies;

    init_pcmcia();

    if (ei_debug > 1) printk("resetting the 8390 t=%ld...", jiffies);

    outb(inb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);

    ei_status.txing = 0;
    ei_status.dmaing = 0;

    /* This check _should_not_ be necessary, omit eventually. */
    while ((inb(NE_BASE+NE_EN0_ISR) & ENISR_RESET) == 0)
	if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
	    printk("%s: ne_reset_8390() did not complete.\n", dev->name);
	    break;
	}
    outb(ENISR_RESET, NE_BASE + NE_EN0_ISR);	/* Ack intr. */
}

/* Grab the 8390 specific header. Similar to the block_input routine, but
   we don't need to be concerned with ring wrap as the header will be at
   the start of a page, so we optimize accordingly. */

static void
apne_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
{

    int nic_base = dev->base_addr;
    int cnt;
    char *ptrc;
    short *ptrs;

    /* This *shouldn't* happen. If it does, it's the last thing you'll see */
    if (ei_status.dmaing) {
	printk("%s: DMAing conflict in ne_get_8390_hdr "
	   "[DMAstat:%d][irqlock:%d][intr:%d].\n",
	   dev->name, ei_status.dmaing, ei_status.irqlock, dev->irq);
	return;
    }

    ei_status.dmaing |= 0x01;
    outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
    outb(ENISR_RDC, nic_base + NE_EN0_ISR);
    outb(sizeof(struct e8390_pkt_hdr), nic_base + NE_EN0_RCNTLO);
    outb(0, nic_base + NE_EN0_RCNTHI);
    outb(0, nic_base + NE_EN0_RSARLO);		/* On page boundary */
    outb(ring_page, nic_base + NE_EN0_RSARHI);
    outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);

    if (ei_status.word16) {
        ptrs = (short*)hdr;
        for(cnt = 0; cnt < (sizeof(struct e8390_pkt_hdr)>>1); cnt++)
            *ptrs++ = inw(NE_BASE + NE_DATAPORT);
    } else {
        ptrc = (char*)hdr;
        for(cnt = 0; cnt < sizeof(struct e8390_pkt_hdr); cnt++)
            *ptrc++ = inb(NE_BASE + NE_DATAPORT);
    }

    outb(ENISR_RDC, nic_base + NE_EN0_ISR);	/* Ack intr. */
    ei_status.dmaing &= ~0x01;

    le16_to_cpus(&hdr->count);
}

/* Block input and output, similar to the Crynwr packet driver.  If you
   are porting to a new ethercard, look at the packet driver source for hints.
   The NEx000 doesn't share the on-board packet memory -- you have to put
   the packet out through the "remote DMA" dataport using outb. */

static void
apne_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
{
    int nic_base = dev->base_addr;
    char *buf = skb->data;
    char *ptrc;
    short *ptrs;
    int cnt;

    /* This *shouldn't* happen. If it does, it's the last thing you'll see */
    if (ei_status.dmaing) {
	printk("%s: DMAing conflict in ne_block_input "
	   "[DMAstat:%d][irqlock:%d][intr:%d].\n",
	   dev->name, ei_status.dmaing, ei_status.irqlock, dev->irq);
	return;
    }
    ei_status.dmaing |= 0x01;
    outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
    outb(ENISR_RDC, nic_base + NE_EN0_ISR);
    outb(count & 0xff, nic_base + NE_EN0_RCNTLO);
    outb(count >> 8, nic_base + NE_EN0_RCNTHI);
    outb(ring_offset & 0xff, nic_base + NE_EN0_RSARLO);
    outb(ring_offset >> 8, nic_base + NE_EN0_RSARHI);
    outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
    if (ei_status.word16) {
      ptrs = (short*)buf;
      for (cnt = 0; cnt < (count>>1); cnt++)
        *ptrs++ = inw(NE_BASE + NE_DATAPORT);
      if (count & 0x01) {
	buf[count-1] = inb(NE_BASE + NE_DATAPORT);
      }
    } else {
      ptrc = (char*)buf;
      for (cnt = 0; cnt < count; cnt++)
        *ptrc++ = inb(NE_BASE + NE_DATAPORT);
    }

    outb(ENISR_RDC, nic_base + NE_EN0_ISR);	/* Ack intr. */
    ei_status.dmaing &= ~0x01;
}

static void
apne_block_output(struct net_device *dev, int count,
		const unsigned char *buf, const int start_page)
{
    int nic_base = NE_BASE;
    unsigned long dma_start;
    char *ptrc;
    short *ptrs;
    int cnt;

    /* Round the count up for word writes.  Do we need to do this?
       What effect will an odd byte count have on the 8390?
       I should check someday. */
    if (ei_status.word16 && (count & 0x01))
      count++;

    /* This *shouldn't* happen. If it does, it's the last thing you'll see */
    if (ei_status.dmaing) {
	printk("%s: DMAing conflict in ne_block_output."
	   "[DMAstat:%d][irqlock:%d][intr:%d]\n",
	   dev->name, ei_status.dmaing, ei_status.irqlock, dev->irq);
	return;
    }
    ei_status.dmaing |= 0x01;
    /* We should already be in page 0, but to be safe... */
    outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);

    outb(ENISR_RDC, nic_base + NE_EN0_ISR);

   /* Now the normal output. */
    outb(count & 0xff, nic_base + NE_EN0_RCNTLO);
    outb(count >> 8,   nic_base + NE_EN0_RCNTHI);
    outb(0x00, nic_base + NE_EN0_RSARLO);
    outb(start_page, nic_base + NE_EN0_RSARHI);

    outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
    if (ei_status.word16) {
        ptrs = (short*)buf;
        for (cnt = 0; cnt < count>>1; cnt++)
            outw(*ptrs++, NE_BASE+NE_DATAPORT);
    } else {
        ptrc = (char*)buf;
        for (cnt = 0; cnt < count; cnt++)
	    outb(*ptrc++, NE_BASE + NE_DATAPORT);
    }

    dma_start = jiffies;

    while ((inb(NE_BASE + NE_EN0_ISR) & ENISR_RDC) == 0)
	if (time_after(jiffies, dma_start + 2*HZ/100)) {	/* 20ms */
		printk("%s: timeout waiting for Tx RDC.\n", dev->name);
		apne_reset_8390(dev);
		NS8390_init(dev,1);
		break;
	}

    outb(ENISR_RDC, nic_base + NE_EN0_ISR);	/* Ack intr. */
    ei_status.dmaing &= ~0x01;
}

static irqreturn_t apne_interrupt(int irq, void *dev_id)
{
    unsigned char pcmcia_intreq;

    if (!(gayle.inten & GAYLE_IRQ_IRQ))
        return IRQ_NONE;

    pcmcia_intreq = pcmcia_get_intreq();

    if (!(pcmcia_intreq & GAYLE_IRQ_IRQ)) {
        pcmcia_ack_int(pcmcia_intreq);
        return IRQ_NONE;
    }
    if (ei_debug > 3)
        printk("pcmcia intreq = %x\n", pcmcia_intreq);
    pcmcia_disable_irq();			/* to get rid of the sti() within ei_interrupt */
    ei_interrupt(irq, dev_id);
    pcmcia_ack_int(pcmcia_get_intreq());
    pcmcia_enable_irq();
    return IRQ_HANDLED;
}

#ifdef MODULE
static struct net_device *apne_dev;

static int __init apne_module_init(void)
{
	apne_dev = apne_probe(-1);
	if (IS_ERR(apne_dev))
		return PTR_ERR(apne_dev);
	return 0;
}

static void __exit apne_module_exit(void)
{
	unregister_netdev(apne_dev);

	pcmcia_disable_irq();

	free_irq(IRQ_AMIGA_PORTS, apne_dev);

	pcmcia_reset();

	release_region(IOBASE, 0x20);

	free_netdev(apne_dev);
}
module_init(apne_module_init);
module_exit(apne_module_exit);
#endif

static int init_pcmcia(void)
{
	u_char config;
#ifndef MANUAL_CONFIG
	u_char tuple[32];
	int offset_len;
#endif
	u_long offset;

	pcmcia_reset();
	pcmcia_program_voltage(PCMCIA_0V);
	pcmcia_access_speed(PCMCIA_SPEED_250NS);
	pcmcia_write_enable();

#ifdef MANUAL_CONFIG
	config = MANUAL_CONFIG;
#else
	/* get and write config byte to enable IO port */

	if (pcmcia_copy_tuple(CISTPL_CFTABLE_ENTRY, tuple, 32) < 3)
		return 0;

	config = tuple[2] & 0x3f;
#endif
#ifdef MANUAL_OFFSET
	offset = MANUAL_OFFSET;
#else
	if (pcmcia_copy_tuple(CISTPL_CONFIG, tuple, 32) < 6)
		return 0;

	offset_len = (tuple[2] & 0x3) + 1;
	offset = 0;
	while(offset_len--) {
		offset = (offset << 8) | tuple[4+offset_len];
	}
#endif

	out_8(GAYLE_ATTRIBUTE+offset, config);

	return 1;
}

MODULE_LICENSE("GPL");