ia64/linux-2.6.18-xen.hg

view drivers/macintosh/macio_asic.c @ 893:f994bfe9b93b

linux/blktap2: reduce TLB flush scope

c/s 885 added very coarse TLB flushing. Since these flushes always
follow single page updates, single page flushes (when available) are
sufficient.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
author Keir Fraser <keir.fraser@citrix.com>
date Thu Jun 04 10:32:57 2009 +0100 (2009-06-04)
parents 831230e53067
children
line source
1 /*
2 * Bus & driver management routines for devices within
3 * a MacIO ASIC. Interface to new driver model mostly
4 * stolen from the PCI version.
5 *
6 * Copyright (C) 2005 Ben. Herrenschmidt (benh@kernel.crashing.org)
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * as published by the Free Software Foundation; either version
11 * 2 of the License, or (at your option) any later version.
12 *
13 * TODO:
14 *
15 * - Don't probe below media bay by default, but instead provide
16 * some hooks for media bay to dynamically add/remove it's own
17 * sub-devices.
18 */
20 #include <linux/string.h>
21 #include <linux/kernel.h>
22 #include <linux/pci.h>
23 #include <linux/pci_ids.h>
24 #include <linux/init.h>
25 #include <linux/module.h>
26 #include <linux/slab.h>
28 #include <asm/machdep.h>
29 #include <asm/macio.h>
30 #include <asm/pmac_feature.h>
31 #include <asm/prom.h>
32 #include <asm/pci-bridge.h>
34 #undef DEBUG
36 #define MAX_NODE_NAME_SIZE (BUS_ID_SIZE - 12)
38 static struct macio_chip *macio_on_hold;
40 static int macio_bus_match(struct device *dev, struct device_driver *drv)
41 {
42 struct macio_dev * macio_dev = to_macio_device(dev);
43 struct macio_driver * macio_drv = to_macio_driver(drv);
44 const struct of_device_id * matches = macio_drv->match_table;
46 if (!matches)
47 return 0;
49 return of_match_device(matches, &macio_dev->ofdev) != NULL;
50 }
52 struct macio_dev *macio_dev_get(struct macio_dev *dev)
53 {
54 struct device *tmp;
56 if (!dev)
57 return NULL;
58 tmp = get_device(&dev->ofdev.dev);
59 if (tmp)
60 return to_macio_device(tmp);
61 else
62 return NULL;
63 }
65 void macio_dev_put(struct macio_dev *dev)
66 {
67 if (dev)
68 put_device(&dev->ofdev.dev);
69 }
72 static int macio_device_probe(struct device *dev)
73 {
74 int error = -ENODEV;
75 struct macio_driver *drv;
76 struct macio_dev *macio_dev;
77 const struct of_device_id *match;
79 drv = to_macio_driver(dev->driver);
80 macio_dev = to_macio_device(dev);
82 if (!drv->probe)
83 return error;
85 macio_dev_get(macio_dev);
87 match = of_match_device(drv->match_table, &macio_dev->ofdev);
88 if (match)
89 error = drv->probe(macio_dev, match);
90 if (error)
91 macio_dev_put(macio_dev);
93 return error;
94 }
96 static int macio_device_remove(struct device *dev)
97 {
98 struct macio_dev * macio_dev = to_macio_device(dev);
99 struct macio_driver * drv = to_macio_driver(dev->driver);
101 if (dev->driver && drv->remove)
102 drv->remove(macio_dev);
103 macio_dev_put(macio_dev);
105 return 0;
106 }
108 static void macio_device_shutdown(struct device *dev)
109 {
110 struct macio_dev * macio_dev = to_macio_device(dev);
111 struct macio_driver * drv = to_macio_driver(dev->driver);
113 if (dev->driver && drv->shutdown)
114 drv->shutdown(macio_dev);
115 }
117 static int macio_device_suspend(struct device *dev, pm_message_t state)
118 {
119 struct macio_dev * macio_dev = to_macio_device(dev);
120 struct macio_driver * drv = to_macio_driver(dev->driver);
122 if (dev->driver && drv->suspend)
123 return drv->suspend(macio_dev, state);
124 return 0;
125 }
127 static int macio_device_resume(struct device * dev)
128 {
129 struct macio_dev * macio_dev = to_macio_device(dev);
130 struct macio_driver * drv = to_macio_driver(dev->driver);
132 if (dev->driver && drv->resume)
133 return drv->resume(macio_dev);
134 return 0;
135 }
137 static int macio_uevent(struct device *dev, char **envp, int num_envp,
138 char *buffer, int buffer_size)
139 {
140 struct macio_dev * macio_dev;
141 struct of_device * of;
142 char *scratch, *compat, *compat2;
143 int i = 0;
144 int length, cplen, cplen2, seen = 0;
146 if (!dev)
147 return -ENODEV;
149 macio_dev = to_macio_device(dev);
150 if (!macio_dev)
151 return -ENODEV;
153 of = &macio_dev->ofdev;
155 /* stuff we want to pass to /sbin/hotplug */
156 envp[i++] = scratch = buffer;
157 length = scnprintf (scratch, buffer_size, "OF_NAME=%s", of->node->name);
158 ++length;
159 buffer_size -= length;
160 if ((buffer_size <= 0) || (i >= num_envp))
161 return -ENOMEM;
162 scratch += length;
164 envp[i++] = scratch;
165 length = scnprintf (scratch, buffer_size, "OF_TYPE=%s", of->node->type);
166 ++length;
167 buffer_size -= length;
168 if ((buffer_size <= 0) || (i >= num_envp))
169 return -ENOMEM;
170 scratch += length;
172 /* Since the compatible field can contain pretty much anything
173 * it's not really legal to split it out with commas. We split it
174 * up using a number of environment variables instead. */
176 compat = (char *) get_property(of->node, "compatible", &cplen);
177 compat2 = compat;
178 cplen2= cplen;
179 while (compat && cplen > 0) {
180 envp[i++] = scratch;
181 length = scnprintf (scratch, buffer_size,
182 "OF_COMPATIBLE_%d=%s", seen, compat);
183 ++length;
184 buffer_size -= length;
185 if ((buffer_size <= 0) || (i >= num_envp))
186 return -ENOMEM;
187 scratch += length;
188 length = strlen (compat) + 1;
189 compat += length;
190 cplen -= length;
191 seen++;
192 }
194 envp[i++] = scratch;
195 length = scnprintf (scratch, buffer_size, "OF_COMPATIBLE_N=%d", seen);
196 ++length;
197 buffer_size -= length;
198 if ((buffer_size <= 0) || (i >= num_envp))
199 return -ENOMEM;
200 scratch += length;
202 envp[i++] = scratch;
203 length = scnprintf (scratch, buffer_size, "MODALIAS=of:N%sT%s",
204 of->node->name, of->node->type);
205 /* overwrite '\0' */
206 buffer_size -= length;
207 if ((buffer_size <= 0) || (i >= num_envp))
208 return -ENOMEM;
209 scratch += length;
211 if (!compat2) {
212 compat2 = "";
213 cplen2 = 1;
214 }
215 while (cplen2 > 0) {
216 length = snprintf (scratch, buffer_size, "C%s", compat2);
217 buffer_size -= length;
218 if (buffer_size <= 0)
219 return -ENOMEM;
220 scratch += length;
221 length = strlen (compat2) + 1;
222 compat2 += length;
223 cplen2 -= length;
224 }
226 envp[i] = NULL;
228 return 0;
229 }
231 extern struct device_attribute macio_dev_attrs[];
233 struct bus_type macio_bus_type = {
234 .name = "macio",
235 .match = macio_bus_match,
236 .uevent = macio_uevent,
237 .probe = macio_device_probe,
238 .remove = macio_device_remove,
239 .shutdown = macio_device_shutdown,
240 .suspend = macio_device_suspend,
241 .resume = macio_device_resume,
242 .dev_attrs = macio_dev_attrs,
243 };
245 static int __init macio_bus_driver_init(void)
246 {
247 return bus_register(&macio_bus_type);
248 }
250 postcore_initcall(macio_bus_driver_init);
253 /**
254 * macio_release_dev - free a macio device structure when all users of it are
255 * finished.
256 * @dev: device that's been disconnected
257 *
258 * Will be called only by the device core when all users of this macio device
259 * are done. This currently means never as we don't hot remove any macio
260 * device yet, though that will happen with mediabay based devices in a later
261 * implementation.
262 */
263 static void macio_release_dev(struct device *dev)
264 {
265 struct macio_dev *mdev;
267 mdev = to_macio_device(dev);
268 kfree(mdev);
269 }
271 /**
272 * macio_resource_quirks - tweak or skip some resources for a device
273 * @np: pointer to the device node
274 * @res: resulting resource
275 * @index: index of resource in node
276 *
277 * If this routine returns non-null, then the resource is completely
278 * skipped.
279 */
280 static int macio_resource_quirks(struct device_node *np, struct resource *res,
281 int index)
282 {
283 /* Only quirks for memory resources for now */
284 if ((res->flags & IORESOURCE_MEM) == 0)
285 return 0;
287 /* Grand Central has too large resource 0 on some machines */
288 if (index == 0 && !strcmp(np->name, "gc"))
289 res->end = res->start + 0x1ffff;
291 /* Airport has bogus resource 2 */
292 if (index >= 2 && !strcmp(np->name, "radio"))
293 return 1;
295 #ifndef CONFIG_PPC64
296 /* DBDMAs may have bogus sizes */
297 if ((res->start & 0x0001f000) == 0x00008000)
298 res->end = res->start + 0xff;
299 #endif /* CONFIG_PPC64 */
301 /* ESCC parent eats child resources. We could have added a
302 * level of hierarchy, but I don't really feel the need
303 * for it
304 */
305 if (!strcmp(np->name, "escc"))
306 return 1;
308 /* ESCC has bogus resources >= 3 */
309 if (index >= 3 && !(strcmp(np->name, "ch-a") &&
310 strcmp(np->name, "ch-b")))
311 return 1;
313 /* Media bay has too many resources, keep only first one */
314 if (index > 0 && !strcmp(np->name, "media-bay"))
315 return 1;
317 /* Some older IDE resources have bogus sizes */
318 if (!(strcmp(np->name, "IDE") && strcmp(np->name, "ATA") &&
319 strcmp(np->type, "ide") && strcmp(np->type, "ata"))) {
320 if (index == 0 && (res->end - res->start) > 0xfff)
321 res->end = res->start + 0xfff;
322 if (index == 1 && (res->end - res->start) > 0xff)
323 res->end = res->start + 0xff;
324 }
325 return 0;
326 }
328 static void macio_create_fixup_irq(struct macio_dev *dev, int index,
329 unsigned int line)
330 {
331 unsigned int irq;
333 irq = irq_create_mapping(NULL, line);
334 if (irq != NO_IRQ) {
335 dev->interrupt[index].start = irq;
336 dev->interrupt[index].flags = IORESOURCE_IRQ;
337 dev->interrupt[index].name = dev->ofdev.dev.bus_id;
338 }
339 if (dev->n_interrupts <= index)
340 dev->n_interrupts = index + 1;
341 }
343 static void macio_add_missing_resources(struct macio_dev *dev)
344 {
345 struct device_node *np = dev->ofdev.node;
346 unsigned int irq_base;
348 /* Gatwick has some missing interrupts on child nodes */
349 if (dev->bus->chip->type != macio_gatwick)
350 return;
352 /* irq_base is always 64 on gatwick. I have no cleaner way to get
353 * that value from here at this point
354 */
355 irq_base = 64;
357 /* Fix SCC */
358 if (strcmp(np->name, "ch-a") == 0) {
359 macio_create_fixup_irq(dev, 0, 15 + irq_base);
360 macio_create_fixup_irq(dev, 1, 4 + irq_base);
361 macio_create_fixup_irq(dev, 2, 5 + irq_base);
362 printk(KERN_INFO "macio: fixed SCC irqs on gatwick\n");
363 }
365 /* Fix media-bay */
366 if (strcmp(np->name, "media-bay") == 0) {
367 macio_create_fixup_irq(dev, 0, 29 + irq_base);
368 printk(KERN_INFO "macio: fixed media-bay irq on gatwick\n");
369 }
371 /* Fix left media bay childs */
372 if (dev->media_bay != NULL && strcmp(np->name, "floppy") == 0) {
373 macio_create_fixup_irq(dev, 0, 19 + irq_base);
374 macio_create_fixup_irq(dev, 1, 1 + irq_base);
375 printk(KERN_INFO "macio: fixed left floppy irqs\n");
376 }
377 if (dev->media_bay != NULL && strcasecmp(np->name, "ata4") == 0) {
378 macio_create_fixup_irq(dev, 0, 14 + irq_base);
379 macio_create_fixup_irq(dev, 0, 3 + irq_base);
380 printk(KERN_INFO "macio: fixed left ide irqs\n");
381 }
382 }
384 static void macio_setup_interrupts(struct macio_dev *dev)
385 {
386 struct device_node *np = dev->ofdev.node;
387 unsigned int irq;
388 int i = 0, j = 0;
390 for (;;) {
391 struct resource *res = &dev->interrupt[j];
393 if (j >= MACIO_DEV_COUNT_IRQS)
394 break;
395 irq = irq_of_parse_and_map(np, i++);
396 if (irq == NO_IRQ)
397 break;
398 res->start = irq;
399 res->flags = IORESOURCE_IRQ;
400 res->name = dev->ofdev.dev.bus_id;
401 if (macio_resource_quirks(np, res, i - 1)) {
402 memset(res, 0, sizeof(struct resource));
403 continue;
404 } else
405 j++;
406 }
407 dev->n_interrupts = j;
408 }
410 static void macio_setup_resources(struct macio_dev *dev,
411 struct resource *parent_res)
412 {
413 struct device_node *np = dev->ofdev.node;
414 struct resource r;
415 int index;
417 for (index = 0; of_address_to_resource(np, index, &r) == 0; index++) {
418 struct resource *res = &dev->resource[index];
419 if (index >= MACIO_DEV_COUNT_RESOURCES)
420 break;
421 *res = r;
422 res->name = dev->ofdev.dev.bus_id;
424 if (macio_resource_quirks(np, res, index)) {
425 memset(res, 0, sizeof(struct resource));
426 continue;
427 }
428 /* Currently, we consider failure as harmless, this may
429 * change in the future, once I've found all the device
430 * tree bugs in older machines & worked around them
431 */
432 if (insert_resource(parent_res, res)) {
433 printk(KERN_WARNING "Can't request resource "
434 "%d for MacIO device %s\n",
435 index, dev->ofdev.dev.bus_id);
436 }
437 }
438 dev->n_resources = index;
439 }
441 /**
442 * macio_add_one_device - Add one device from OF node to the device tree
443 * @chip: pointer to the macio_chip holding the device
444 * @np: pointer to the device node in the OF tree
445 * @in_bay: set to 1 if device is part of a media-bay
446 *
447 * When media-bay is changed to hotswap drivers, this function will
448 * be exposed to the bay driver some way...
449 */
450 static struct macio_dev * macio_add_one_device(struct macio_chip *chip,
451 struct device *parent,
452 struct device_node *np,
453 struct macio_dev *in_bay,
454 struct resource *parent_res)
455 {
456 struct macio_dev *dev;
457 u32 *reg;
459 if (np == NULL)
460 return NULL;
462 dev = kmalloc(sizeof(*dev), GFP_KERNEL);
463 if (!dev)
464 return NULL;
465 memset(dev, 0, sizeof(*dev));
467 dev->bus = &chip->lbus;
468 dev->media_bay = in_bay;
469 dev->ofdev.node = np;
470 dev->ofdev.dma_mask = 0xffffffffUL;
471 dev->ofdev.dev.dma_mask = &dev->ofdev.dma_mask;
472 dev->ofdev.dev.parent = parent;
473 dev->ofdev.dev.bus = &macio_bus_type;
474 dev->ofdev.dev.release = macio_release_dev;
476 #ifdef DEBUG
477 printk("preparing mdev @%p, ofdev @%p, dev @%p, kobj @%p\n",
478 dev, &dev->ofdev, &dev->ofdev.dev, &dev->ofdev.dev.kobj);
479 #endif
481 /* MacIO itself has a different reg, we use it's PCI base */
482 if (np == chip->of_node) {
483 sprintf(dev->ofdev.dev.bus_id, "%1d.%08x:%.*s",
484 chip->lbus.index,
485 #ifdef CONFIG_PCI
486 (unsigned int)pci_resource_start(chip->lbus.pdev, 0),
487 #else
488 0, /* NuBus may want to do something better here */
489 #endif
490 MAX_NODE_NAME_SIZE, np->name);
491 } else {
492 reg = (u32 *)get_property(np, "reg", NULL);
493 sprintf(dev->ofdev.dev.bus_id, "%1d.%08x:%.*s",
494 chip->lbus.index,
495 reg ? *reg : 0, MAX_NODE_NAME_SIZE, np->name);
496 }
498 /* Setup interrupts & resources */
499 macio_setup_interrupts(dev);
500 macio_setup_resources(dev, parent_res);
501 macio_add_missing_resources(dev);
503 /* Register with core */
504 if (of_device_register(&dev->ofdev) != 0) {
505 printk(KERN_DEBUG"macio: device registration error for %s!\n",
506 dev->ofdev.dev.bus_id);
507 kfree(dev);
508 return NULL;
509 }
511 return dev;
512 }
514 static int macio_skip_device(struct device_node *np)
515 {
516 if (strncmp(np->name, "battery", 7) == 0)
517 return 1;
518 if (strncmp(np->name, "escc-legacy", 11) == 0)
519 return 1;
520 return 0;
521 }
523 /**
524 * macio_pci_add_devices - Adds sub-devices of mac-io to the device tree
525 * @chip: pointer to the macio_chip holding the devices
526 *
527 * This function will do the job of extracting devices from the
528 * Open Firmware device tree, build macio_dev structures and add
529 * them to the Linux device tree.
530 *
531 * For now, childs of media-bay are added now as well. This will
532 * change rsn though.
533 */
534 static void macio_pci_add_devices(struct macio_chip *chip)
535 {
536 struct device_node *np, *pnode;
537 struct macio_dev *rdev, *mdev, *mbdev = NULL, *sdev = NULL;
538 struct device *parent = NULL;
539 struct resource *root_res = &iomem_resource;
541 /* Add a node for the macio bus itself */
542 #ifdef CONFIG_PCI
543 if (chip->lbus.pdev) {
544 parent = &chip->lbus.pdev->dev;
545 root_res = &chip->lbus.pdev->resource[0];
546 }
547 #endif
548 pnode = of_node_get(chip->of_node);
549 if (pnode == NULL)
550 return;
552 /* Add macio itself to hierarchy */
553 rdev = macio_add_one_device(chip, parent, pnode, NULL, root_res);
554 if (rdev == NULL)
555 return;
556 root_res = &rdev->resource[0];
558 /* First scan 1st level */
559 for (np = NULL; (np = of_get_next_child(pnode, np)) != NULL;) {
560 if (macio_skip_device(np))
561 continue;
562 of_node_get(np);
563 mdev = macio_add_one_device(chip, &rdev->ofdev.dev, np, NULL,
564 root_res);
565 if (mdev == NULL)
566 of_node_put(np);
567 else if (strncmp(np->name, "media-bay", 9) == 0)
568 mbdev = mdev;
569 else if (strncmp(np->name, "escc", 4) == 0)
570 sdev = mdev;
571 }
573 /* Add media bay devices if any */
574 if (mbdev)
575 for (np = NULL; (np = of_get_next_child(mbdev->ofdev.node, np))
576 != NULL;) {
577 if (macio_skip_device(np))
578 continue;
579 of_node_get(np);
580 if (macio_add_one_device(chip, &mbdev->ofdev.dev, np,
581 mbdev, root_res) == NULL)
582 of_node_put(np);
583 }
585 /* Add serial ports if any */
586 if (sdev) {
587 for (np = NULL; (np = of_get_next_child(sdev->ofdev.node, np))
588 != NULL;) {
589 if (macio_skip_device(np))
590 continue;
591 of_node_get(np);
592 if (macio_add_one_device(chip, &sdev->ofdev.dev, np,
593 NULL, root_res) == NULL)
594 of_node_put(np);
595 }
596 }
597 }
600 /**
601 * macio_register_driver - Registers a new MacIO device driver
602 * @drv: pointer to the driver definition structure
603 */
604 int macio_register_driver(struct macio_driver *drv)
605 {
606 /* initialize common driver fields */
607 drv->driver.name = drv->name;
608 drv->driver.bus = &macio_bus_type;
610 /* register with core */
611 return driver_register(&drv->driver);
612 }
614 /**
615 * macio_unregister_driver - Unregisters a new MacIO device driver
616 * @drv: pointer to the driver definition structure
617 */
618 void macio_unregister_driver(struct macio_driver *drv)
619 {
620 driver_unregister(&drv->driver);
621 }
623 /**
624 * macio_request_resource - Request an MMIO resource
625 * @dev: pointer to the device holding the resource
626 * @resource_no: resource number to request
627 * @name: resource name
628 *
629 * Mark memory region number @resource_no associated with MacIO
630 * device @dev as being reserved by owner @name. Do not access
631 * any address inside the memory regions unless this call returns
632 * successfully.
633 *
634 * Returns 0 on success, or %EBUSY on error. A warning
635 * message is also printed on failure.
636 */
637 int macio_request_resource(struct macio_dev *dev, int resource_no,
638 const char *name)
639 {
640 if (macio_resource_len(dev, resource_no) == 0)
641 return 0;
643 if (!request_mem_region(macio_resource_start(dev, resource_no),
644 macio_resource_len(dev, resource_no),
645 name))
646 goto err_out;
648 return 0;
650 err_out:
651 printk (KERN_WARNING "MacIO: Unable to reserve resource #%d:%lx@%lx"
652 " for device %s\n",
653 resource_no,
654 macio_resource_len(dev, resource_no),
655 macio_resource_start(dev, resource_no),
656 dev->ofdev.dev.bus_id);
657 return -EBUSY;
658 }
660 /**
661 * macio_release_resource - Release an MMIO resource
662 * @dev: pointer to the device holding the resource
663 * @resource_no: resource number to release
664 */
665 void macio_release_resource(struct macio_dev *dev, int resource_no)
666 {
667 if (macio_resource_len(dev, resource_no) == 0)
668 return;
669 release_mem_region(macio_resource_start(dev, resource_no),
670 macio_resource_len(dev, resource_no));
671 }
673 /**
674 * macio_request_resources - Reserve all memory resources
675 * @dev: MacIO device whose resources are to be reserved
676 * @name: Name to be associated with resource.
677 *
678 * Mark all memory regions associated with MacIO device @dev as
679 * being reserved by owner @name. Do not access any address inside
680 * the memory regions unless this call returns successfully.
681 *
682 * Returns 0 on success, or %EBUSY on error. A warning
683 * message is also printed on failure.
684 */
685 int macio_request_resources(struct macio_dev *dev, const char *name)
686 {
687 int i;
689 for (i = 0; i < dev->n_resources; i++)
690 if (macio_request_resource(dev, i, name))
691 goto err_out;
692 return 0;
694 err_out:
695 while(--i >= 0)
696 macio_release_resource(dev, i);
698 return -EBUSY;
699 }
701 /**
702 * macio_release_resources - Release reserved memory resources
703 * @dev: MacIO device whose resources were previously reserved
704 */
706 void macio_release_resources(struct macio_dev *dev)
707 {
708 int i;
710 for (i = 0; i < dev->n_resources; i++)
711 macio_release_resource(dev, i);
712 }
715 #ifdef CONFIG_PCI
717 static int __devinit macio_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
718 {
719 struct device_node* np;
720 struct macio_chip* chip;
722 if (ent->vendor != PCI_VENDOR_ID_APPLE)
723 return -ENODEV;
725 /* Note regarding refcounting: We assume pci_device_to_OF_node() is
726 * ported to new OF APIs and returns a node with refcount incremented.
727 */
728 np = pci_device_to_OF_node(pdev);
729 if (np == NULL)
730 return -ENODEV;
732 /* The above assumption is wrong !!!
733 * fix that here for now until I fix the arch code
734 */
735 of_node_get(np);
737 /* We also assume that pmac_feature will have done a get() on nodes
738 * stored in the macio chips array
739 */
740 chip = macio_find(np, macio_unknown);
741 of_node_put(np);
742 if (chip == NULL)
743 return -ENODEV;
745 /* XXX Need locking ??? */
746 if (chip->lbus.pdev == NULL) {
747 chip->lbus.pdev = pdev;
748 chip->lbus.chip = chip;
749 pci_set_drvdata(pdev, &chip->lbus);
750 pci_set_master(pdev);
751 }
753 printk(KERN_INFO "MacIO PCI driver attached to %s chipset\n",
754 chip->name);
756 /*
757 * HACK ALERT: The WallStreet PowerBook and some OHare based machines
758 * have 2 macio ASICs. I must probe the "main" one first or IDE
759 * ordering will be incorrect. So I put on "hold" the second one since
760 * it seem to appear first on PCI
761 */
762 if (chip->type == macio_gatwick || chip->type == macio_ohareII)
763 if (macio_chips[0].lbus.pdev == NULL) {
764 macio_on_hold = chip;
765 return 0;
766 }
768 macio_pci_add_devices(chip);
769 if (macio_on_hold && macio_chips[0].lbus.pdev != NULL) {
770 macio_pci_add_devices(macio_on_hold);
771 macio_on_hold = NULL;
772 }
774 return 0;
775 }
777 static void __devexit macio_pci_remove(struct pci_dev* pdev)
778 {
779 panic("removing of macio-asic not supported !\n");
780 }
782 /*
783 * MacIO is matched against any Apple ID, it's probe() function
784 * will then decide wether it applies or not
785 */
786 static const struct pci_device_id __devinitdata pci_ids [] = { {
787 .vendor = PCI_VENDOR_ID_APPLE,
788 .device = PCI_ANY_ID,
789 .subvendor = PCI_ANY_ID,
790 .subdevice = PCI_ANY_ID,
792 }, { /* end: all zeroes */ }
793 };
794 MODULE_DEVICE_TABLE (pci, pci_ids);
796 /* pci driver glue; this is a "new style" PCI driver module */
797 static struct pci_driver macio_pci_driver = {
798 .name = (char *) "macio",
799 .id_table = pci_ids,
801 .probe = macio_pci_probe,
802 .remove = macio_pci_remove,
803 };
805 #endif /* CONFIG_PCI */
807 static int __init macio_module_init (void)
808 {
809 #ifdef CONFIG_PCI
810 int rc;
812 rc = pci_register_driver(&macio_pci_driver);
813 if (rc)
814 return rc;
815 #endif /* CONFIG_PCI */
816 return 0;
817 }
819 module_init(macio_module_init);
821 EXPORT_SYMBOL(macio_register_driver);
822 EXPORT_SYMBOL(macio_unregister_driver);
823 EXPORT_SYMBOL(macio_dev_get);
824 EXPORT_SYMBOL(macio_dev_put);
825 EXPORT_SYMBOL(macio_request_resource);
826 EXPORT_SYMBOL(macio_release_resource);
827 EXPORT_SYMBOL(macio_request_resources);
828 EXPORT_SYMBOL(macio_release_resources);