setup-pci.c 16.9 KB
Newer Older
Linus Torvalds's avatar
Linus Torvalds committed
1
/*
2
3
4
 *  Copyright (C) 1998-2000  Andre Hedrick <andre@linux-ide.org>
 *  Copyright (C) 1995-1998  Mark Lord
 *  Copyright (C)      2007  Bartlomiej Zolnierkiewicz
5
 *
Linus Torvalds's avatar
Linus Torvalds committed
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
 *  May be copied or modified under the terms of the GNU General Public License
 */

#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/timer.h>
#include <linux/mm.h>
#include <linux/interrupt.h>
#include <linux/ide.h>
#include <linux/dma-mapping.h>

#include <asm/io.h>
#include <asm/irq.h>


/**
 *	ide_match_hwif	-	match a PCI IDE against an ide_hwif
 *	@io_base: I/O base of device
 *	@bootable: set if its bootable
 *	@name: name of device
 *
 *	Match a PCI IDE port against an entry in ide_hwifs[],
 *	based on io_base port if possible. Return the matching hwif,
 *	or a new hwif. If we find an error (clashing, out of devices, etc)
 *	return NULL
 *
 *	FIXME: we need to handle mmio matches here too
 */

static ide_hwif_t *ide_match_hwif(unsigned long io_base, u8 bootable, const char *name)
{
	int h;
	ide_hwif_t *hwif;

	/*
	 * Look for a hwif with matching io_base default value.
	 * If chipset is "ide_unknown", then claim that hwif slot.
	 * Otherwise, some other chipset has already claimed it..  :(
	 */
	for (h = 0; h < MAX_HWIFS; ++h) {
		hwif = &ide_hwifs[h];
		if (hwif->io_ports[IDE_DATA_OFFSET] == io_base) {
			if (hwif->chipset == ide_unknown)
				return hwif; /* match */
			printk(KERN_ERR "%s: port 0x%04lx already claimed by %s\n",
				name, io_base, hwif->name);
			return NULL;	/* already claimed */
		}
	}
	/*
	 * Okay, there is no hwif matching our io_base,
	 * so we'll just claim an unassigned slot.
	 * Give preference to claiming other slots before claiming ide0/ide1,
	 * just in case there's another interface yet-to-be-scanned
	 * which uses ports 1f0/170 (the ide0/ide1 defaults).
	 *
	 * Unless there is a bootable card that does not use the standard
	 * ports 1f0/170 (the ide0/ide1 defaults). The (bootable) flag.
	 */
	if (bootable) {
		for (h = 0; h < MAX_HWIFS; ++h) {
			hwif = &ide_hwifs[h];
			if (hwif->chipset == ide_unknown)
				return hwif;	/* pick an unused entry */
		}
	} else {
		for (h = 2; h < MAX_HWIFS; ++h) {
			hwif = ide_hwifs + h;
			if (hwif->chipset == ide_unknown)
				return hwif;	/* pick an unused entry */
		}
	}
81
	for (h = 0; h < 2 && h < MAX_HWIFS; ++h) {
Linus Torvalds's avatar
Linus Torvalds committed
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
		hwif = ide_hwifs + h;
		if (hwif->chipset == ide_unknown)
			return hwif;	/* pick an unused entry */
	}
	printk(KERN_ERR "%s: too many IDE interfaces, no room in table\n", name);
	return NULL;
}

/**
 *	ide_setup_pci_baseregs	-	place a PCI IDE controller native
 *	@dev: PCI device of interface to switch native
 *	@name: Name of interface
 *
 *	We attempt to place the PCI interface into PCI native mode. If
 *	we succeed the BARs are ok and the controller is in PCI mode.
 *	Returns 0 on success or an errno code. 
 *
 *	FIXME: if we program the interface and then fail to set the BARS
 *	we don't switch it back to legacy mode. Do we actually care ??
 */
 
static int ide_setup_pci_baseregs (struct pci_dev *dev, const char *name)
{
	u8 progif = 0;

	/*
	 * Place both IDE interfaces into PCI "native" mode:
	 */
	if (pci_read_config_byte(dev, PCI_CLASS_PROG, &progif) ||
			 (progif & 5) != 5) {
		if ((progif & 0xa) != 0xa) {
			printk(KERN_INFO "%s: device not capable of full "
				"native PCI mode\n", name);
			return -EOPNOTSUPP;
		}
		printk("%s: placing both ports into native PCI mode\n", name);
		(void) pci_write_config_byte(dev, PCI_CLASS_PROG, progif|5);
		if (pci_read_config_byte(dev, PCI_CLASS_PROG, &progif) ||
		    (progif & 5) != 5) {
			printk(KERN_ERR "%s: rewrite of PROGIF failed, wanted "
				"0x%04x, got 0x%04x\n",
				name, progif|5, progif);
			return -EOPNOTSUPP;
		}
	}
	return 0;
}

#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
131
132
133
134
135
136
137
138
139
140
static void ide_pci_clear_simplex(unsigned long dma_base, const char *name)
{
	u8 dma_stat = inb(dma_base + 2);

	outb(dma_stat & 0x60, dma_base + 2);
	dma_stat = inb(dma_base + 2);
	if (dma_stat & 0x80)
		printk(KERN_INFO "%s: simplex device: DMA forced\n", name);
}

Linus Torvalds's avatar
Linus Torvalds committed
141
142
/**
 *	ide_get_or_set_dma_base		-	setup BMIBA
143
144
 *	@d: IDE port info
 *	@hwif: IDE interface
Linus Torvalds's avatar
Linus Torvalds committed
145
 *
146
147
148
 *	Fetch the DMA Bus-Master-I/O-Base-Address (BMIBA) from PCI space.
 *	Where a device has a partner that is already in DMA mode we check
 *	and enforce IDE simplex rules.
Linus Torvalds's avatar
Linus Torvalds committed
149
150
 */

151
static unsigned long ide_get_or_set_dma_base(const struct ide_port_info *d, ide_hwif_t *hwif)
Linus Torvalds's avatar
Linus Torvalds committed
152
{
153
154
	struct pci_dev *dev = to_pci_dev(hwif->dev);
	unsigned long dma_base = 0;
155
	u8 dma_stat = 0;
Linus Torvalds's avatar
Linus Torvalds committed
156
157
158
159
160
161
162

	if (hwif->mmio)
		return hwif->dma_base;

	if (hwif->mate && hwif->mate->dma_base) {
		dma_base = hwif->mate->dma_base - (hwif->channel ? 0 : 8);
	} else {
163
164
165
166
		u8 baridx = (d->host_flags & IDE_HFLAG_CS5520) ? 2 : 4;

		dma_base = pci_resource_start(dev, baridx);

167
		if (dma_base == 0) {
168
			printk(KERN_ERR "%s: DMA base is invalid\n", d->name);
169
170
			return 0;
		}
Linus Torvalds's avatar
Linus Torvalds committed
171
172
	}

173
174
175
	if (hwif->channel)
		dma_base += 8;

176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
	if (d->host_flags & IDE_HFLAG_CS5520)
		goto out;

	if (d->host_flags & IDE_HFLAG_CLEAR_SIMPLEX) {
		ide_pci_clear_simplex(dma_base, d->name);
		goto out;
	}

	/*
	 * If the device claims "simplex" DMA, this means that only one of
	 * the two interfaces can be trusted with DMA at any point in time
	 * (so we should enable DMA only on one of the two interfaces).
	 *
	 * FIXME: At this point we haven't probed the drives so we can't make
	 * the appropriate decision.  Really we should defer this problem until
	 * we tune the drive then try to grab DMA ownership if we want to be
	 * the DMA end.  This has to be become dynamic to handle hot-plug.
	 */
	dma_stat = hwif->INB(dma_base + 2);
	if ((dma_stat & 0x80) && hwif->mate && hwif->mate->dma_base) {
		printk(KERN_INFO "%s: simplex device: DMA disabled\n", d->name);
		dma_base = 0;
Linus Torvalds's avatar
Linus Torvalds committed
198
	}
199
out:
Linus Torvalds's avatar
Linus Torvalds committed
200
201
202
203
	return dma_base;
}
#endif /* CONFIG_BLK_DEV_IDEDMA_PCI */

204
void ide_setup_pci_noise(struct pci_dev *dev, const struct ide_port_info *d)
Linus Torvalds's avatar
Linus Torvalds committed
205
{
206
207
208
	printk(KERN_INFO "%s: IDE controller (0x%04x:0x%04x rev 0x%02x) at "
			 " PCI slot %s\n", d->name, dev->vendor, dev->device,
			 dev->revision, pci_name(dev));
Linus Torvalds's avatar
Linus Torvalds committed
209
210
211
212
213
214
215
216
}

EXPORT_SYMBOL_GPL(ide_setup_pci_noise);


/**
 *	ide_pci_enable	-	do PCI enables
 *	@dev: PCI device
217
 *	@d: IDE port info
Linus Torvalds's avatar
Linus Torvalds committed
218
219
 *
 *	Enable the IDE PCI device. We attempt to enable the device in full
220
221
222
 *	but if that fails then we only need IO space. The PCI code should
 *	have setup the proper resources for us already for controllers in
 *	legacy mode.
Linus Torvalds's avatar
Linus Torvalds committed
223
224
225
 *	
 *	Returns zero on success or an error code
 */
226

227
static int ide_pci_enable(struct pci_dev *dev, const struct ide_port_info *d)
Linus Torvalds's avatar
Linus Torvalds committed
228
229
230
231
{
	int ret;

	if (pci_enable_device(dev)) {
232
		ret = pci_enable_device_io(dev);
Linus Torvalds's avatar
Linus Torvalds committed
233
234
235
236
237
238
239
240
241
		if (ret < 0) {
			printk(KERN_WARNING "%s: (ide_setup_pci_device:) "
				"Could not enable device.\n", d->name);
			goto out;
		}
		printk(KERN_WARNING "%s: BIOS configuration fixed.\n", d->name);
	}

	/*
242
243
244
	 * assume all devices can do 32-bit DMA for now, we can add
	 * a DMA mask field to the struct ide_port_info if we need it
	 * (or let lower level driver set the DMA mask)
Linus Torvalds's avatar
Linus Torvalds committed
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
	 */
	ret = pci_set_dma_mask(dev, DMA_32BIT_MASK);
	if (ret < 0) {
		printk(KERN_ERR "%s: can't set dma mask\n", d->name);
		goto out;
	}

	/* FIXME: Temporary - until we put in the hotplug interface logic
	   Check that the bits we want are not in use by someone else. */
	ret = pci_request_region(dev, 4, "ide_tmp");
	if (ret < 0)
		goto out;

	pci_release_region(dev, 4);
out:
	return ret;
}

/**
 *	ide_pci_configure	-	configure an unconfigured device
 *	@dev: PCI device
266
 *	@d: IDE port info
Linus Torvalds's avatar
Linus Torvalds committed
267
268
269
270
 *
 *	Enable and configure the PCI device we have been passed.
 *	Returns zero on success or an error code.
 */
271

272
static int ide_pci_configure(struct pci_dev *dev, const struct ide_port_info *d)
Linus Torvalds's avatar
Linus Torvalds committed
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
{
	u16 pcicmd = 0;
	/*
	 * PnP BIOS was *supposed* to have setup this device, but we
	 * can do it ourselves, so long as the BIOS has assigned an IRQ
	 * (or possibly the device is using a "legacy header" for IRQs).
	 * Maybe the user deliberately *disabled* the device,
	 * but we'll eventually ignore it again if no drives respond.
	 */
	if (ide_setup_pci_baseregs(dev, d->name) || pci_write_config_word(dev, PCI_COMMAND, pcicmd|PCI_COMMAND_IO)) 
	{
		printk(KERN_INFO "%s: device disabled (BIOS)\n", d->name);
		return -ENODEV;
	}
	if (pci_read_config_word(dev, PCI_COMMAND, &pcicmd)) {
		printk(KERN_ERR "%s: error accessing PCI regs\n", d->name);
		return -EIO;
	}
	if (!(pcicmd & PCI_COMMAND_IO)) {
		printk(KERN_ERR "%s: unable to enable IDE controller\n", d->name);
		return -ENXIO;
	}
	return 0;
}

/**
 *	ide_pci_check_iomem	-	check a register is I/O
300
301
302
 *	@dev: PCI device
 *	@d: IDE port info
 *	@bar: BAR number
Linus Torvalds's avatar
Linus Torvalds committed
303
304
305
306
 *
 *	Checks if a BAR is configured and points to MMIO space. If so
 *	print an error and return an error code. Otherwise return 0
 */
307

308
static int ide_pci_check_iomem(struct pci_dev *dev, const struct ide_port_info *d, int bar)
Linus Torvalds's avatar
Linus Torvalds committed
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
{
	ulong flags = pci_resource_flags(dev, bar);
	
	/* Unconfigured ? */
	if (!flags || pci_resource_len(dev, bar) == 0)
		return 0;

	/* I/O space */		
	if(flags & PCI_BASE_ADDRESS_IO_MASK)
		return 0;
		
	/* Bad */
	printk(KERN_ERR "%s: IO baseregs (BIOS) are reported "
			"as MEM, report to "
			"<andre@linux-ide.org>.\n", d->name);
	return -EINVAL;
}

/**
 *	ide_hwif_configure	-	configure an IDE interface
 *	@dev: PCI device holding interface
330
 *	@d: IDE port info
331
332
 *	@port: port number
 *	@irq: PCI IRQ
Linus Torvalds's avatar
Linus Torvalds committed
333
334
335
336
337
338
339
 *
 *	Perform the initial set up for the hardware interface structure. This
 *	is done per interface port rather than per PCI device. There may be
 *	more than one port per device.
 *
 *	Returns the new hardware interface structure, or NULL on a failure
 */
340

341
342
343
static ide_hwif_t *ide_hwif_configure(struct pci_dev *dev,
				      const struct ide_port_info *d,
				      unsigned int port, int irq)
Linus Torvalds's avatar
Linus Torvalds committed
344
345
346
{
	unsigned long ctl = 0, base = 0;
	ide_hwif_t *hwif;
347
	u8 bootable = (d->host_flags & IDE_HFLAG_BOOTABLE) ? 1 : 0;
348
349
	u8 oldnoprobe = 0;
	struct hw_regs_s hw;
Linus Torvalds's avatar
Linus Torvalds committed
350

351
	if ((d->host_flags & IDE_HFLAG_ISA_PORTS) == 0) {
Linus Torvalds's avatar
Linus Torvalds committed
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
		/*  Possibly we should fail if these checks report true */
		ide_pci_check_iomem(dev, d, 2*port);
		ide_pci_check_iomem(dev, d, 2*port+1);
 
		ctl  = pci_resource_start(dev, 2*port+1);
		base = pci_resource_start(dev, 2*port);
		if ((ctl && !base) || (base && !ctl)) {
			printk(KERN_ERR "%s: inconsistent baseregs (BIOS) "
				"for port %d, skipping\n", d->name, port);
			return NULL;
		}
	}
	if (!ctl)
	{
		/* Use default values */
		ctl = port ? 0x374 : 0x3f4;
		base = port ? 0x170 : 0x1f0;
	}
370
	if ((hwif = ide_match_hwif(base, bootable, d->name)) == NULL)
Linus Torvalds's avatar
Linus Torvalds committed
371
		return NULL;	/* no room in ide_hwifs[] */
372
373

	memset(&hw, 0, sizeof(hw));
374
	hw.irq = irq;
375
376
377
378
379
380
381
382
383
384
385
386
	hw.dev = &dev->dev;
	hw.chipset = d->chipset ? d->chipset : ide_pci;
	ide_std_init_ports(&hw, base, ctl | 2);

	if (hwif->io_ports[IDE_DATA_OFFSET] == base &&
	    hwif->io_ports[IDE_CONTROL_OFFSET] == (ctl | 2))
		oldnoprobe = hwif->noprobe;

	ide_init_port_hw(hwif, &hw);

	hwif->noprobe = oldnoprobe;

387
	hwif->dev = &dev->dev;
388
	hwif->cds = d;
Linus Torvalds's avatar
Linus Torvalds committed
389
390
391
392

	return hwif;
}

393
#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
Linus Torvalds's avatar
Linus Torvalds committed
394
395
/**
 *	ide_hwif_setup_dma	-	configure DMA interface
396
 *	@hwif: IDE interface
397
 *	@d: IDE port info
Linus Torvalds's avatar
Linus Torvalds committed
398
399
400
401
402
 *
 *	Set up the DMA base for the interface. Enable the master bits as
 *	necessary and attempt to bring the device DMA into a ready to use
 *	state
 */
403

404
void ide_hwif_setup_dma(ide_hwif_t *hwif, const struct ide_port_info *d)
Linus Torvalds's avatar
Linus Torvalds committed
405
{
406
	struct pci_dev *dev = to_pci_dev(hwif->dev);
Linus Torvalds's avatar
Linus Torvalds committed
407
	u16 pcicmd;
408

Linus Torvalds's avatar
Linus Torvalds committed
409
410
	pci_read_config_word(dev, PCI_COMMAND, &pcicmd);

411
	if ((d->host_flags & IDE_HFLAG_NO_AUTODMA) == 0 ||
Linus Torvalds's avatar
Linus Torvalds committed
412
413
	    ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE &&
	     (dev->class & 0x80))) {
414
		unsigned long dma_base = ide_get_or_set_dma_base(d, hwif);
Linus Torvalds's avatar
Linus Torvalds committed
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
		if (dma_base && !(pcicmd & PCI_COMMAND_MASTER)) {
			/*
 			 * Set up BM-DMA capability
			 * (PnP BIOS should have done this)
 			 */
			pci_set_master(dev);
			if (pci_read_config_word(dev, PCI_COMMAND, &pcicmd) || !(pcicmd & PCI_COMMAND_MASTER)) {
				printk(KERN_ERR "%s: %s error updating PCICMD\n",
					hwif->name, d->name);
				dma_base = 0;
			}
		}
		if (dma_base) {
			if (d->init_dma) {
				d->init_dma(hwif, dma_base);
			} else {
431
				ide_setup_dma(hwif, dma_base);
Linus Torvalds's avatar
Linus Torvalds committed
432
433
434
435
436
437
			}
		} else {
			printk(KERN_INFO "%s: %s Bus-Master DMA disabled "
				"(BIOS)\n", hwif->name, d->name);
		}
	}
438
}
439
#endif /* CONFIG_BLK_DEV_IDEDMA_PCI */
Linus Torvalds's avatar
Linus Torvalds committed
440
441
442
443

/**
 *	ide_setup_pci_controller	-	set up IDE PCI
 *	@dev: PCI device
444
 *	@d: IDE port info
Linus Torvalds's avatar
Linus Torvalds committed
445
446
447
448
449
450
451
 *	@noisy: verbose flag
 *	@config: returned as 1 if we configured the hardware
 *
 *	Set up the PCI and controller side of the IDE interface. This brings
 *	up the PCI side of the device, checks that the device is enabled
 *	and enables it if need be
 */
452

453
static int ide_setup_pci_controller(struct pci_dev *dev, const struct ide_port_info *d, int noisy, int *config)
Linus Torvalds's avatar
Linus Torvalds committed
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
{
	int ret;
	u16 pcicmd;

	if (noisy)
		ide_setup_pci_noise(dev, d);

	ret = ide_pci_enable(dev, d);
	if (ret < 0)
		goto out;

	ret = pci_read_config_word(dev, PCI_COMMAND, &pcicmd);
	if (ret < 0) {
		printk(KERN_ERR "%s: error accessing PCI regs\n", d->name);
		goto out;
	}
	if (!(pcicmd & PCI_COMMAND_IO)) {	/* is device disabled? */
		ret = ide_pci_configure(dev, d);
		if (ret < 0)
			goto out;
		*config = 1;
		printk(KERN_INFO "%s: device enabled (Linux)\n", d->name);
	}

out:
	return ret;
}

/**
 *	ide_pci_setup_ports	-	configure ports/devices on PCI IDE
 *	@dev: PCI device
485
 *	@d: IDE port info
Linus Torvalds's avatar
Linus Torvalds committed
486
 *	@pciirq: IRQ line
487
 *	@idx: ATA index table to update
Linus Torvalds's avatar
Linus Torvalds committed
488
489
490
491
492
493
494
495
496
 *
 *	Scan the interfaces attached to this device and do any
 *	necessary per port setup. Attach the devices and ask the
 *	generic DMA layer to do its work for us.
 *
 *	Normally called automaticall from do_ide_pci_setup_device,
 *	but is also used directly as a helper function by some controllers
 *	where the chipset setup is not the default PCI IDE one.
 */
497

498
void ide_pci_setup_ports(struct pci_dev *dev, const struct ide_port_info *d, int pciirq, u8 *idx)
Linus Torvalds's avatar
Linus Torvalds committed
499
{
500
	int channels = (d->host_flags & IDE_HFLAG_SINGLE) ? 1 : 2, port;
501
	ide_hwif_t *hwif;
Linus Torvalds's avatar
Linus Torvalds committed
502
503
504
505
506
	u8 tmp;

	/*
	 * Set up the IDE ports
	 */
507

508
	for (port = 0; port < channels; ++port) {
509
510
		const ide_pci_enablebit_t *e = &(d->enablebits[port]);

Linus Torvalds's avatar
Linus Torvalds committed
511
		if (e->reg && (pci_read_config_byte(dev, e->reg, &tmp) ||
512
513
		    (tmp & e->mask) != e->val)) {
			printk(KERN_INFO "%s: IDE port disabled\n", d->name);
Linus Torvalds's avatar
Linus Torvalds committed
514
			continue;	/* port not enabled */
515
		}
Linus Torvalds's avatar
Linus Torvalds committed
516

517
518
		hwif = ide_hwif_configure(dev, d, port, pciirq);
		if (hwif == NULL)
Linus Torvalds's avatar
Linus Torvalds committed
519
520
			continue;

521
		*(idx + port) = hwif->index;
522
	}
Linus Torvalds's avatar
Linus Torvalds committed
523
524
525
526
527
528
529
530
531
532
533
}

EXPORT_SYMBOL_GPL(ide_pci_setup_ports);

/*
 * ide_setup_pci_device() looks at the primary/secondary interfaces
 * on a PCI IDE device and, if they are enabled, prepares the IDE driver
 * for use with them.  This generic code works for most PCI chipsets.
 *
 * One thing that is not standardized is the location of the
 * primary/secondary interface "enable/disable" bits.  For chipsets that
534
 * we "know" about, this information is in the struct ide_port_info;
Linus Torvalds's avatar
Linus Torvalds committed
535
536
 * for all other chipsets, we just assume both interfaces are enabled.
 */
537
static int do_ide_setup_pci_device(struct pci_dev *dev,
538
				   const struct ide_port_info *d,
539
				   u8 *idx, u8 noisy)
Linus Torvalds's avatar
Linus Torvalds committed
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
{
	int tried_config = 0;
	int pciirq, ret;

	ret = ide_setup_pci_controller(dev, d, noisy, &tried_config);
	if (ret < 0)
		goto out;

	/*
	 * Can we trust the reported IRQ?
	 */
	pciirq = dev->irq;

	/* Is it an "IDE storage" device in non-PCI mode? */
	if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && (dev->class & 5) != 5) {
		if (noisy)
			printk(KERN_INFO "%s: not 100%% native mode: "
				"will probe irqs later\n", d->name);
		/*
		 * This allows offboard ide-pci cards the enable a BIOS,
		 * verify interrupt settings of split-mirror pci-config
		 * space, place chipset into init-mode, and/or preserve
		 * an interrupt if the card is not native ide support.
		 */
		ret = d->init_chipset ? d->init_chipset(dev, d->name) : 0;
		if (ret < 0)
			goto out;
		pciirq = ret;
	} else if (tried_config) {
		if (noisy)
			printk(KERN_INFO "%s: will probe irqs later\n", d->name);
		pciirq = 0;
	} else if (!pciirq) {
		if (noisy)
			printk(KERN_WARNING "%s: bad irq (%d): will probe later\n",
				d->name, pciirq);
		pciirq = 0;
	} else {
		if (d->init_chipset) {
			ret = d->init_chipset(dev, d->name);
			if (ret < 0)
				goto out;
		}
		if (noisy)
			printk(KERN_INFO "%s: 100%% native mode on irq %d\n",
				d->name, pciirq);
	}

	/* FIXME: silent failure can happen */

590
	ide_pci_setup_ports(dev, d, pciirq, idx);
Linus Torvalds's avatar
Linus Torvalds committed
591
592
593
594
out:
	return ret;
}

595
int ide_setup_pci_device(struct pci_dev *dev, const struct ide_port_info *d)
Linus Torvalds's avatar
Linus Torvalds committed
596
{
597
	u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
Linus Torvalds's avatar
Linus Torvalds committed
598
599
	int ret;

600
	ret = do_ide_setup_pci_device(dev, d, &idx[0], 1);
Linus Torvalds's avatar
Linus Torvalds committed
601

602
	if (ret >= 0)
603
		ide_device_add(idx, d);
Linus Torvalds's avatar
Linus Torvalds committed
604
605
606
607
608
609
610

	return ret;
}

EXPORT_SYMBOL_GPL(ide_setup_pci_device);

int ide_setup_pci_devices(struct pci_dev *dev1, struct pci_dev *dev2,
611
			  const struct ide_port_info *d)
Linus Torvalds's avatar
Linus Torvalds committed
612
613
614
{
	struct pci_dev *pdev[] = { dev1, dev2 };
	int ret, i;
615
	u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
Linus Torvalds's avatar
Linus Torvalds committed
616
617

	for (i = 0; i < 2; i++) {
618
		ret = do_ide_setup_pci_device(pdev[i], d, &idx[i*2], !i);
Linus Torvalds's avatar
Linus Torvalds committed
619
620
621
622
623
624
625
626
		/*
		 * FIXME: Mom, mom, they stole me the helper function to undo
		 * do_ide_setup_pci_device() on the first device!
		 */
		if (ret < 0)
			goto out;
	}

627
	ide_device_add(idx, d);
Linus Torvalds's avatar
Linus Torvalds committed
628
629
630
631
632
out:
	return ret;
}

EXPORT_SYMBOL_GPL(ide_setup_pci_devices);