aboutsummaryrefslogblamecommitdiffstats
path: root/drivers/pcmcia/ti113x.h
blob: 52c073a9d7e4463ceee2db044ed85d2faf09e62b (plain) (tree)
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
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662





















































































































































































































































































































































































































































































































































































































































































                                                                                                          
/*
 * ti113x.h 1.16 1999/10/25 20:03:34
 *
 * The contents of this file are subject to the Mozilla Public License
 * Version 1.1 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License
 * at http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
 * the License for the specific language governing rights and
 * limitations under the License. 
 *
 * The initial developer of the original code is David A. Hinds
 * <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
 * are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
 *
 * Alternatively, the contents of this file may be used under the
 * terms of the GNU General Public License version 2 (the "GPL"), in which
 * case the provisions of the GPL are applicable instead of the
 * above.  If you wish to allow the use of your version of this file
 * only under the terms of the GPL and not to allow others to use
 * your version of this file under the MPL, indicate your decision by
 * deleting the provisions above and replace them with the notice and
 * other provisions required by the GPL.  If you do not delete the
 * provisions above, a recipient may use your version of this file
 * under either the MPL or the GPL.
 */

#ifndef _LINUX_TI113X_H
#define _LINUX_TI113X_H

#include <linux/config.h>

/* Register definitions for TI 113X PCI-to-CardBus bridges */

/* System Control Register */
#define TI113X_SYSTEM_CONTROL		0x0080	/* 32 bit */
#define  TI113X_SCR_SMIROUTE		0x04000000
#define  TI113X_SCR_SMISTATUS		0x02000000
#define  TI113X_SCR_SMIENB		0x01000000
#define  TI113X_SCR_VCCPROT		0x00200000
#define  TI113X_SCR_REDUCEZV		0x00100000
#define  TI113X_SCR_CDREQEN		0x00080000
#define  TI113X_SCR_CDMACHAN		0x00070000
#define  TI113X_SCR_SOCACTIVE		0x00002000
#define  TI113X_SCR_PWRSTREAM		0x00000800
#define  TI113X_SCR_DELAYUP		0x00000400
#define  TI113X_SCR_DELAYDOWN		0x00000200
#define  TI113X_SCR_INTERROGATE		0x00000100
#define  TI113X_SCR_CLKRUN_SEL		0x00000080
#define  TI113X_SCR_PWRSAVINGS		0x00000040
#define  TI113X_SCR_SUBSYSRW		0x00000020
#define  TI113X_SCR_CB_DPAR		0x00000010
#define  TI113X_SCR_CDMA_EN		0x00000008
#define  TI113X_SCR_ASYNC_IRQ		0x00000004
#define  TI113X_SCR_KEEPCLK		0x00000002
#define  TI113X_SCR_CLKRUN_ENA		0x00000001  

#define  TI122X_SCR_SER_STEP		0xc0000000
#define  TI122X_SCR_INTRTIE		0x20000000
#define  TI122X_SCR_CBRSVD		0x00400000
#define  TI122X_SCR_MRBURSTDN		0x00008000
#define  TI122X_SCR_MRBURSTUP		0x00004000
#define  TI122X_SCR_RIMUX		0x00000001

/* Multimedia Control Register */
#define TI1250_MULTIMEDIA_CTL		0x0084	/* 8 bit */
#define  TI1250_MMC_ZVOUTEN		0x80
#define  TI1250_MMC_PORTSEL		0x40
#define  TI1250_MMC_ZVEN1		0x02
#define  TI1250_MMC_ZVEN0		0x01

#define TI1250_GENERAL_STATUS		0x0085	/* 8 bit */
#define TI1250_GPIO0_CONTROL		0x0088	/* 8 bit */
#define TI1250_GPIO1_CONTROL		0x0089	/* 8 bit */
#define TI1250_GPIO2_CONTROL		0x008a	/* 8 bit */
#define TI1250_GPIO3_CONTROL		0x008b	/* 8 bit */
#define TI1250_GPIO_MODE_MASK		0xc0

/* IRQMUX/MFUNC Register */
#define TI122X_MFUNC			0x008c	/* 32 bit */
#define TI122X_MFUNC0_MASK		0x0000000f
#define TI122X_MFUNC1_MASK		0x000000f0
#define TI122X_MFUNC2_MASK		0x00000f00
#define TI122X_MFUNC3_MASK		0x0000f000
#define TI122X_MFUNC4_MASK		0x000f0000
#define TI122X_MFUNC5_MASK		0x00f00000
#define TI122X_MFUNC6_MASK		0x0f000000

#define TI122X_MFUNC0_INTA		0x00000002
#define TI125X_MFUNC0_INTB		0x00000001
#define TI122X_MFUNC1_INTB		0x00000020
#define TI122X_MFUNC3_IRQSER		0x00001000


/* Retry Status Register */
#define TI113X_RETRY_STATUS		0x0090	/* 8 bit */
#define  TI113X_RSR_PCIRETRY		0x80
#define  TI113X_RSR_CBRETRY		0x40
#define  TI113X_RSR_TEXP_CBB		0x20
#define  TI113X_RSR_MEXP_CBB		0x10
#define  TI113X_RSR_TEXP_CBA		0x08
#define  TI113X_RSR_MEXP_CBA		0x04
#define  TI113X_RSR_TEXP_PCI		0x02
#define  TI113X_RSR_MEXP_PCI		0x01

/* Card Control Register */
#define TI113X_CARD_CONTROL		0x0091	/* 8 bit */
#define  TI113X_CCR_RIENB		0x80
#define  TI113X_CCR_ZVENABLE		0x40
#define  TI113X_CCR_PCI_IRQ_ENA		0x20
#define  TI113X_CCR_PCI_IREQ		0x10
#define  TI113X_CCR_PCI_CSC		0x08
#define  TI113X_CCR_SPKROUTEN		0x02
#define  TI113X_CCR_IFG			0x01

#define  TI1220_CCR_PORT_SEL		0x20
#define  TI122X_CCR_AUD2MUX		0x04

/* Device Control Register */
#define TI113X_DEVICE_CONTROL		0x0092	/* 8 bit */
#define  TI113X_DCR_5V_FORCE		0x40
#define  TI113X_DCR_3V_FORCE		0x20
#define  TI113X_DCR_IMODE_MASK		0x06
#define  TI113X_DCR_IMODE_ISA		0x02
#define  TI113X_DCR_IMODE_SERIAL	0x04

#define  TI12XX_DCR_IMODE_PCI_ONLY	0x00
#define  TI12XX_DCR_IMODE_ALL_SERIAL	0x06

/* Buffer Control Register */
#define TI113X_BUFFER_CONTROL		0x0093	/* 8 bit */
#define  TI113X_BCR_CB_READ_DEPTH	0x08
#define  TI113X_BCR_CB_WRITE_DEPTH	0x04
#define  TI113X_BCR_PCI_READ_DEPTH	0x02
#define  TI113X_BCR_PCI_WRITE_DEPTH	0x01

/* Diagnostic Register */
#define TI1250_DIAGNOSTIC		0x0093	/* 8 bit */
#define  TI1250_DIAG_TRUE_VALUE		0x80
#define  TI1250_DIAG_PCI_IREQ		0x40
#define  TI1250_DIAG_PCI_CSC		0x20
#define  TI1250_DIAG_ASYNC_CSC		0x01

/* DMA Registers */
#define TI113X_DMA_0			0x0094	/* 32 bit */
#define TI113X_DMA_1			0x0098	/* 32 bit */

/* ExCA IO offset registers */
#define TI113X_IO_OFFSET(map)		(0x36+((map)<<1))

/* EnE test register */
#define ENE_TEST_C9			0xc9	/* 8bit */
#define ENE_TEST_C9_TLTENABLE		0x02

#ifdef CONFIG_CARDBUS

/*
 * Texas Instruments CardBus controller overrides.
 */
#define ti_sysctl(socket)	((socket)->private[0])
#define ti_cardctl(socket)	((socket)->private[1])
#define ti_devctl(socket)	((socket)->private[2])
#define ti_diag(socket)		((socket)->private[3])
#define ti_mfunc(socket)	((socket)->private[4])
#define ene_test_c9(socket)	((socket)->private[5])

/*
 * These are the TI specific power management handlers.
 */
static void ti_save_state(struct yenta_socket *socket)
{
	ti_sysctl(socket) = config_readl(socket, TI113X_SYSTEM_CONTROL);
	ti_mfunc(socket) = config_readl(socket, TI122X_MFUNC);
	ti_cardctl(socket) = config_readb(socket, TI113X_CARD_CONTROL);
	ti_devctl(socket) = config_readb(socket, TI113X_DEVICE_CONTROL);
	ti_diag(socket) = config_readb(socket, TI1250_DIAGNOSTIC);

	if (socket->dev->vendor == PCI_VENDOR_ID_ENE)
		ene_test_c9(socket) = config_readb(socket, ENE_TEST_C9);
}

static void ti_restore_state(struct yenta_socket *socket)
{
	config_writel(socket, TI113X_SYSTEM_CONTROL, ti_sysctl(socket));
	config_writel(socket, TI122X_MFUNC, ti_mfunc(socket));
	config_writeb(socket, TI113X_CARD_CONTROL, ti_cardctl(socket));
	config_writeb(socket, TI113X_DEVICE_CONTROL, ti_devctl(socket));
	config_writeb(socket, TI1250_DIAGNOSTIC, ti_diag(socket));

	if (socket->dev->vendor == PCI_VENDOR_ID_ENE)
		config_writeb(socket, ENE_TEST_C9, ene_test_c9(socket));
}

/*
 *	Zoom video control for TI122x/113x chips
 */

static void ti_zoom_video(struct pcmcia_socket *sock, int onoff)
{
	u8 reg;
	struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);

	/* If we don't have a Zoom Video switch this is harmless,
	   we just tristate the unused (ZV) lines */
	reg = config_readb(socket, TI113X_CARD_CONTROL);
	if (onoff)
		/* Zoom zoom, we will all go together, zoom zoom, zoom zoom */
		reg |= TI113X_CCR_ZVENABLE;
	else
		reg &= ~TI113X_CCR_ZVENABLE;
	config_writeb(socket, TI113X_CARD_CONTROL, reg);
}

/*
 *	The 145x series can also use this. They have an additional
 *	ZV autodetect mode we don't use but don't actually need.
 *	FIXME: manual says its in func0 and func1 but disagrees with
 *	itself about this - do we need to force func0, if so we need
 *	to know a lot more about socket pairings in pcmcia_socket than
 *	we do now.. uggh.
 */
 
static void ti1250_zoom_video(struct pcmcia_socket *sock, int onoff)
{	
	struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
	int shift = 0;
	u8 reg;

	ti_zoom_video(sock, onoff);

	reg = config_readb(socket, TI1250_MULTIMEDIA_CTL);
	reg |= TI1250_MMC_ZVOUTEN;	/* ZV bus enable */

	if(PCI_FUNC(socket->dev->devfn)==1)
		shift = 1;
	
	if(onoff)
	{
		reg &= ~(1<<6); 	/* Clear select bit */
		reg |= shift<<6;	/* Favour our socket */
		reg |= 1<<shift;	/* Socket zoom video on */
	}
	else
	{
		reg &= ~(1<<6); 	/* Clear select bit */
		reg |= (1^shift)<<6;	/* Favour other socket */
		reg &= ~(1<<shift);	/* Socket zoon video off */
	}

	config_writeb(socket, TI1250_MULTIMEDIA_CTL, reg);
}

static void ti_set_zv(struct yenta_socket *socket)
{
	if(socket->dev->vendor == PCI_VENDOR_ID_TI)
	{
		switch(socket->dev->device)
		{
			/* There may be more .. */
			case PCI_DEVICE_ID_TI_1220:
			case PCI_DEVICE_ID_TI_1221:
			case PCI_DEVICE_ID_TI_1225:
			case PCI_DEVICE_ID_TI_4510:
				socket->socket.zoom_video = ti_zoom_video;
				break;	
			case PCI_DEVICE_ID_TI_1250:
			case PCI_DEVICE_ID_TI_1251A:
			case PCI_DEVICE_ID_TI_1251B:
			case PCI_DEVICE_ID_TI_1450:
				socket->socket.zoom_video = ti1250_zoom_video;
		}
	}
}


/*
 * Generic TI init - TI has an extension for the
 * INTCTL register that sets the PCI CSC interrupt.
 * Make sure we set it correctly at open and init
 * time
 * - override: disable the PCI CSC interrupt. This makes
 *   it possible to use the CSC interrupt to probe the
 *   ISA interrupts.
 * - init: set the interrupt to match our PCI state.
 *   This makes us correctly get PCI CSC interrupt
 *   events.
 */
static int ti_init(struct yenta_socket *socket)
{
	u8 new, reg = exca_readb(socket, I365_INTCTL);

	new = reg & ~I365_INTR_ENA;
	if (socket->cb_irq)
		new |= I365_INTR_ENA;
	if (new != reg)
		exca_writeb(socket, I365_INTCTL, new);
	return 0;
}

static int ti_override(struct yenta_socket *socket)
{
	u8 new, reg = exca_readb(socket, I365_INTCTL);

	new = reg & ~I365_INTR_ENA;
	if (new != reg)
		exca_writeb(socket, I365_INTCTL, new);

	ti_set_zv(socket);

	return 0;
}

static int ti113x_override(struct yenta_socket *socket)
{
	u8 cardctl;

	cardctl = config_readb(socket, TI113X_CARD_CONTROL);
	cardctl &= ~(TI113X_CCR_PCI_IRQ_ENA | TI113X_CCR_PCI_IREQ | TI113X_CCR_PCI_CSC);
	if (socket->cb_irq)
		cardctl |= TI113X_CCR_PCI_IRQ_ENA | TI113X_CCR_PCI_CSC | TI113X_CCR_PCI_IREQ;
	config_writeb(socket, TI113X_CARD_CONTROL, cardctl);

	return ti_override(socket);
}


/* irqrouting for func0, probes PCI interrupt and ISA interrupts */
static void ti12xx_irqroute_func0(struct yenta_socket *socket)
{
	u32 mfunc, mfunc_old, devctl;
	u8 gpio3, gpio3_old;
	int pci_irq_status;

	mfunc = mfunc_old = config_readl(socket, TI122X_MFUNC);
	devctl = config_readb(socket, TI113X_DEVICE_CONTROL);
	printk(KERN_INFO "Yenta TI: socket %s, mfunc 0x%08x, devctl 0x%02x\n",
	       pci_name(socket->dev), mfunc, devctl);

	/* make sure PCI interrupts are enabled before probing */
	ti_init(socket);

	/* test PCI interrupts first. only try fixing if return value is 0! */
	pci_irq_status = yenta_probe_cb_irq(socket);
	if (pci_irq_status)
		goto out;

	/*
	 * We're here which means PCI interrupts are _not_ delivered. try to
	 * find the right setting (all serial or parallel)
	 */
	printk(KERN_INFO "Yenta TI: socket %s probing PCI interrupt failed, trying to fix\n",
	       pci_name(socket->dev));

	/* for serial PCI make sure MFUNC3 is set to IRQSER */
	if ((devctl & TI113X_DCR_IMODE_MASK) == TI12XX_DCR_IMODE_ALL_SERIAL) {
		switch (socket->dev->device) {
		case PCI_DEVICE_ID_TI_1250:
		case PCI_DEVICE_ID_TI_1251A:
		case PCI_DEVICE_ID_TI_1251B:
		case PCI_DEVICE_ID_TI_1450:
		case PCI_DEVICE_ID_TI_1451A:
		case PCI_DEVICE_ID_TI_4450:
		case PCI_DEVICE_ID_TI_4451:
			/* these chips have no IRQSER setting in MFUNC3  */
			break;

		default:
			mfunc = (mfunc & ~TI122X_MFUNC3_MASK) | TI122X_MFUNC3_IRQSER;

			/* write down if changed, probe */
			if (mfunc != mfunc_old) {
				config_writel(socket, TI122X_MFUNC, mfunc);

				pci_irq_status = yenta_probe_cb_irq(socket);
				if (pci_irq_status == 1) {
					printk(KERN_INFO "Yenta TI: socket %s all-serial interrupts ok\n",
					       pci_name(socket->dev));
					mfunc_old = mfunc;
					goto out;
				}

				/* not working, back to old value */
				mfunc = mfunc_old;
				config_writel(socket, TI122X_MFUNC, mfunc);

				if (pci_irq_status == -1)
					goto out;
			}
		}

		/* serial PCI interrupts not working fall back to parallel */
		printk(KERN_INFO "Yenta TI: socket %s falling back to parallel PCI interrupts\n",
		       pci_name(socket->dev));
		devctl &= ~TI113X_DCR_IMODE_MASK;
		devctl |= TI113X_DCR_IMODE_SERIAL; /* serial ISA could be right */
		config_writeb(socket, TI113X_DEVICE_CONTROL, devctl);
	}

	/* parallel PCI interrupts: route INTA */
	switch (socket->dev->device) {
	case PCI_DEVICE_ID_TI_1250:
	case PCI_DEVICE_ID_TI_1251A:
	case PCI_DEVICE_ID_TI_1251B:
	case PCI_DEVICE_ID_TI_1450:
		/* make sure GPIO3 is set to INTA */
		gpio3 = gpio3_old = config_readb(socket, TI1250_GPIO3_CONTROL);
		gpio3 &= ~TI1250_GPIO_MODE_MASK;
		if (gpio3 != gpio3_old)
			config_writeb(socket, TI1250_GPIO3_CONTROL, gpio3);
		break;

	default:
		gpio3 = gpio3_old = 0;

		mfunc = (mfunc & ~TI122X_MFUNC0_MASK) | TI122X_MFUNC0_INTA;
		if (mfunc != mfunc_old)
			config_writel(socket, TI122X_MFUNC, mfunc);
	}

	/* time to probe again */
	pci_irq_status = yenta_probe_cb_irq(socket);
	if (pci_irq_status == 1) {
		mfunc_old = mfunc;
		printk(KERN_INFO "Yenta TI: socket %s parallel PCI interrupts ok\n",
		       pci_name(socket->dev));
	} else {
		/* not working, back to old value */
		mfunc = mfunc_old;
		config_writel(socket, TI122X_MFUNC, mfunc);
		if (gpio3 != gpio3_old)
			config_writeb(socket, TI1250_GPIO3_CONTROL, gpio3_old);
	}

out:
	if (pci_irq_status < 1) {
		socket->cb_irq = 0;
		printk(KERN_INFO "Yenta TI: socket %s no PCI interrupts. Fish. Please report.\n",
		       pci_name(socket->dev));
	}
}


/*
 * ties INTA and INTB together. also changes the devices irq to that of
 * the function 0 device. call from func1 only.
 * returns 1 if INTRTIE changed, 0 otherwise.
 */
static int ti12xx_tie_interrupts(struct yenta_socket *socket, int *old_irq)
{
	struct pci_dev *func0;
	u32 sysctl;

	sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
	if (sysctl & TI122X_SCR_INTRTIE)
		return 0;

	/* find func0 device */
	func0 = pci_get_slot(socket->dev->bus, socket->dev->devfn & ~0x07);
	if (!func0)
		return 0;

	/* change the interrupt to match func0, tie 'em up */
	*old_irq = socket->cb_irq;
	socket->cb_irq = socket->dev->irq = func0->irq;
	sysctl |= TI122X_SCR_INTRTIE;
	config_writel(socket, TI113X_SYSTEM_CONTROL, sysctl);

	pci_dev_put(func0);

	return 1;
}

/* undo what ti12xx_tie_interrupts() did */
static void ti12xx_untie_interrupts(struct yenta_socket *socket, int old_irq)
{
	u32 sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
	sysctl &= ~TI122X_SCR_INTRTIE;
	config_writel(socket, TI113X_SYSTEM_CONTROL, sysctl);

	socket->cb_irq = socket->dev->irq = old_irq;
}

/* 
 * irqrouting for func1, plays with INTB routing
 * only touches MFUNC for INTB routing. all other bits are taken
 * care of in func0 already.
 */
static void ti12xx_irqroute_func1(struct yenta_socket *socket)
{
	u32 mfunc, mfunc_old, devctl;
	int pci_irq_status;

	mfunc = mfunc_old = config_readl(socket, TI122X_MFUNC);
	devctl = config_readb(socket, TI113X_DEVICE_CONTROL);
	printk(KERN_INFO "Yenta TI: socket %s, mfunc 0x%08x, devctl 0x%02x\n",
	       pci_name(socket->dev), mfunc, devctl);

	/* make sure PCI interrupts are enabled before probing */
	ti_init(socket);

	/* test PCI interrupts first. only try fixing if return value is 0! */
	pci_irq_status = yenta_probe_cb_irq(socket);
	if (pci_irq_status)
		goto out;

	/*
	 * We're here which means PCI interrupts are _not_ delivered. try to
	 * find the right setting
	 */
	printk(KERN_INFO "Yenta TI: socket %s probing PCI interrupt failed, trying to fix\n",
	       pci_name(socket->dev));


	/* if all serial: set INTRTIE, probe again */
	if ((devctl & TI113X_DCR_IMODE_MASK) == TI12XX_DCR_IMODE_ALL_SERIAL) {
		int old_irq;

		if (ti12xx_tie_interrupts(socket, &old_irq)) {
			pci_irq_status = yenta_probe_cb_irq(socket);
			if (pci_irq_status == 1) {
				printk(KERN_INFO "Yenta TI: socket %s all-serial interrupts, tied ok\n",
				       pci_name(socket->dev));
				goto out;
			}

			ti12xx_untie_interrupts(socket, old_irq);
		}
	}
	/* parallel PCI: route INTB, probe again */
	else {
		int old_irq;

		switch (socket->dev->device) {
		case PCI_DEVICE_ID_TI_1250:
			/* the 1250 has one pin for IRQSER/INTB depending on devctl */
			break;

		case PCI_DEVICE_ID_TI_1251A:
		case PCI_DEVICE_ID_TI_1251B:
		case PCI_DEVICE_ID_TI_1450:
			/*
			 *  those have a pin for IRQSER/INTB plus INTB in MFUNC0
			 *  we alread probed the shared pin, now go for MFUNC0
			 */
			mfunc = (mfunc & ~TI122X_MFUNC0_MASK) | TI125X_MFUNC0_INTB;
			break;

		default:
			mfunc = (mfunc & ~TI122X_MFUNC1_MASK) | TI122X_MFUNC1_INTB;
			break;
		}

		/* write, probe */
		if (mfunc != mfunc_old) {
			config_writel(socket, TI122X_MFUNC, mfunc);

			pci_irq_status = yenta_probe_cb_irq(socket);
			if (pci_irq_status == 1) {
				printk(KERN_INFO "Yenta TI: socket %s parallel PCI interrupts ok\n",
				       pci_name(socket->dev));
				goto out;
			}

			mfunc = mfunc_old;
			config_writel(socket, TI122X_MFUNC, mfunc);

			if (pci_irq_status == -1)
				goto out;
		}
		
		/* still nothing: set INTRTIE */
		if (ti12xx_tie_interrupts(socket, &old_irq)) {
			pci_irq_status = yenta_probe_cb_irq(socket);
			if (pci_irq_status == 1) {
				printk(KERN_INFO "Yenta TI: socket %s parallel PCI interrupts, tied ok\n",
				       pci_name(socket->dev));
				goto out;
			}

			ti12xx_untie_interrupts(socket, old_irq);
		}
	}

out:
	if (pci_irq_status < 1) {
		socket->cb_irq = 0;
		printk(KERN_INFO "Yenta TI: socket %s no PCI interrupts. Fish. Please report.\n",
		       pci_name(socket->dev));
	}
}

static int ti12xx_override(struct yenta_socket *socket)
{
	u32 val, val_orig;

	/* make sure that memory burst is active */
	val_orig = val = config_readl(socket, TI113X_SYSTEM_CONTROL);
	if (disable_clkrun && PCI_FUNC(socket->dev->devfn) == 0) {
		printk(KERN_INFO "Yenta: Disabling CLKRUN feature\n");
		val |= TI113X_SCR_KEEPCLK;
	}
	if (!(val & TI122X_SCR_MRBURSTUP)) {
		printk(KERN_INFO "Yenta: Enabling burst memory read transactions\n");
		val |= TI122X_SCR_MRBURSTUP;
	}
	if (val_orig != val)
		config_writel(socket, TI113X_SYSTEM_CONTROL, val);

	/*
	 * for EnE bridges only: clear testbit TLTEnable. this makes the
	 * RME Hammerfall DSP sound card working.
	 */
	if (socket->dev->vendor == PCI_VENDOR_ID_ENE) {
		u8 test_c9 = config_readb(socket, ENE_TEST_C9);
		test_c9 &= ~ENE_TEST_C9_TLTENABLE;
		config_writeb(socket, ENE_TEST_C9, test_c9);
	}

	/*
	 * Yenta expects controllers to use CSCINT to route
	 * CSC interrupts to PCI rather than INTVAL.
	 */
	val = config_readb(socket, TI1250_DIAGNOSTIC);
	printk(KERN_INFO "Yenta: Using %s to route CSC interrupts to PCI\n",
		(val & TI1250_DIAG_PCI_CSC) ? "CSCINT" : "INTVAL");
	printk(KERN_INFO "Yenta: Routing CardBus interrupts to %s\n",
		(val & TI1250_DIAG_PCI_IREQ) ? "PCI" : "ISA");

	/* do irqrouting, depending on function */
	if (PCI_FUNC(socket->dev->devfn) == 0)
		ti12xx_irqroute_func0(socket);
	else
		ti12xx_irqroute_func1(socket);

	return ti_override(socket);
}


static int ti1250_override(struct yenta_socket *socket)
{
	u8 old, diag;

	old = config_readb(socket, TI1250_DIAGNOSTIC);
	diag = old & ~(TI1250_DIAG_PCI_CSC | TI1250_DIAG_PCI_IREQ);
	if (socket->cb_irq)
		diag |= TI1250_DIAG_PCI_CSC | TI1250_DIAG_PCI_IREQ;

	if (diag != old) {
		printk(KERN_INFO "Yenta: adjusting diagnostic: %02x -> %02x\n",
			old, diag);
		config_writeb(socket, TI1250_DIAGNOSTIC, diag);
	}

	return ti12xx_override(socket);
}

#endif /* CONFIG_CARDBUS */

#endif /* _LINUX_TI113X_H */