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Commit | Line | Data |
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1da177e4 LT |
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 | * TODO: | |
7 | * | |
8 | * - Don't probe below media bay by default, but instead provide | |
9 | * some hooks for media bay to dynamically add/remove it's own | |
10 | * sub-devices. | |
11 | */ | |
12 | ||
13 | #include <linux/config.h> | |
14 | #include <linux/string.h> | |
15 | #include <linux/kernel.h> | |
16 | #include <linux/pci.h> | |
17 | #include <linux/pci_ids.h> | |
18 | #include <linux/init.h> | |
19 | #include <linux/module.h> | |
4e57b681 TS |
20 | #include <linux/slab.h> |
21 | ||
1da177e4 LT |
22 | #include <asm/machdep.h> |
23 | #include <asm/macio.h> | |
24 | #include <asm/pmac_feature.h> | |
25 | #include <asm/prom.h> | |
26 | #include <asm/pci-bridge.h> | |
27 | ||
28 | #undef DEBUG | |
29 | ||
30 | #define MAX_NODE_NAME_SIZE (BUS_ID_SIZE - 12) | |
31 | ||
32 | static struct macio_chip *macio_on_hold; | |
33 | ||
34 | static int macio_bus_match(struct device *dev, struct device_driver *drv) | |
35 | { | |
36 | struct macio_dev * macio_dev = to_macio_device(dev); | |
37 | struct macio_driver * macio_drv = to_macio_driver(drv); | |
5e655772 | 38 | const struct of_device_id * matches = macio_drv->match_table; |
1da177e4 LT |
39 | |
40 | if (!matches) | |
41 | return 0; | |
42 | ||
43 | return of_match_device(matches, &macio_dev->ofdev) != NULL; | |
44 | } | |
45 | ||
46 | struct macio_dev *macio_dev_get(struct macio_dev *dev) | |
47 | { | |
48 | struct device *tmp; | |
49 | ||
50 | if (!dev) | |
51 | return NULL; | |
52 | tmp = get_device(&dev->ofdev.dev); | |
53 | if (tmp) | |
54 | return to_macio_device(tmp); | |
55 | else | |
56 | return NULL; | |
57 | } | |
58 | ||
59 | void macio_dev_put(struct macio_dev *dev) | |
60 | { | |
61 | if (dev) | |
62 | put_device(&dev->ofdev.dev); | |
63 | } | |
64 | ||
65 | ||
66 | static int macio_device_probe(struct device *dev) | |
67 | { | |
68 | int error = -ENODEV; | |
69 | struct macio_driver *drv; | |
70 | struct macio_dev *macio_dev; | |
5e655772 | 71 | const struct of_device_id *match; |
1da177e4 LT |
72 | |
73 | drv = to_macio_driver(dev->driver); | |
74 | macio_dev = to_macio_device(dev); | |
75 | ||
76 | if (!drv->probe) | |
77 | return error; | |
78 | ||
79 | macio_dev_get(macio_dev); | |
80 | ||
81 | match = of_match_device(drv->match_table, &macio_dev->ofdev); | |
82 | if (match) | |
83 | error = drv->probe(macio_dev, match); | |
84 | if (error) | |
85 | macio_dev_put(macio_dev); | |
86 | ||
87 | return error; | |
88 | } | |
89 | ||
90 | static int macio_device_remove(struct device *dev) | |
91 | { | |
92 | struct macio_dev * macio_dev = to_macio_device(dev); | |
93 | struct macio_driver * drv = to_macio_driver(dev->driver); | |
94 | ||
95 | if (dev->driver && drv->remove) | |
96 | drv->remove(macio_dev); | |
97 | macio_dev_put(macio_dev); | |
98 | ||
99 | return 0; | |
100 | } | |
101 | ||
102 | static void macio_device_shutdown(struct device *dev) | |
103 | { | |
104 | struct macio_dev * macio_dev = to_macio_device(dev); | |
105 | struct macio_driver * drv = to_macio_driver(dev->driver); | |
106 | ||
107 | if (dev->driver && drv->shutdown) | |
108 | drv->shutdown(macio_dev); | |
109 | } | |
110 | ||
f4513904 | 111 | static int macio_device_suspend(struct device *dev, pm_message_t state) |
1da177e4 LT |
112 | { |
113 | struct macio_dev * macio_dev = to_macio_device(dev); | |
114 | struct macio_driver * drv = to_macio_driver(dev->driver); | |
115 | ||
116 | if (dev->driver && drv->suspend) | |
117 | return drv->suspend(macio_dev, state); | |
118 | return 0; | |
119 | } | |
120 | ||
121 | static int macio_device_resume(struct device * dev) | |
122 | { | |
123 | struct macio_dev * macio_dev = to_macio_device(dev); | |
124 | struct macio_driver * drv = to_macio_driver(dev->driver); | |
125 | ||
126 | if (dev->driver && drv->resume) | |
127 | return drv->resume(macio_dev); | |
128 | return 0; | |
129 | } | |
130 | ||
312c004d | 131 | static int macio_uevent(struct device *dev, char **envp, int num_envp, |
184f6eb8 JM |
132 | char *buffer, int buffer_size) |
133 | { | |
134 | struct macio_dev * macio_dev; | |
135 | struct of_device * of; | |
136 | char *scratch, *compat; | |
137 | int i = 0; | |
138 | int length = 0; | |
139 | int cplen, seen = 0; | |
140 | ||
141 | if (!dev) | |
142 | return -ENODEV; | |
143 | ||
144 | macio_dev = to_macio_device(dev); | |
145 | if (!macio_dev) | |
146 | return -ENODEV; | |
147 | ||
148 | of = &macio_dev->ofdev; | |
149 | scratch = buffer; | |
150 | ||
151 | /* stuff we want to pass to /sbin/hotplug */ | |
152 | envp[i++] = scratch; | |
153 | length += scnprintf (scratch, buffer_size - length, "OF_NAME=%s", | |
154 | of->node->name); | |
155 | if ((buffer_size - length <= 0) || (i >= num_envp)) | |
156 | return -ENOMEM; | |
157 | ++length; | |
158 | scratch += length; | |
159 | ||
160 | envp[i++] = scratch; | |
161 | length += scnprintf (scratch, buffer_size - length, "OF_TYPE=%s", | |
162 | of->node->type); | |
163 | if ((buffer_size - length <= 0) || (i >= num_envp)) | |
164 | return -ENOMEM; | |
165 | ++length; | |
166 | scratch += length; | |
167 | ||
168 | /* Since the compatible field can contain pretty much anything | |
169 | * it's not really legal to split it out with commas. We split it | |
170 | * up using a number of environment variables instead. */ | |
171 | ||
172 | compat = (char *) get_property(of->node, "compatible", &cplen); | |
173 | while (compat && cplen > 0) { | |
174 | int l; | |
175 | envp[i++] = scratch; | |
176 | length += scnprintf (scratch, buffer_size - length, | |
177 | "OF_COMPATIBLE_%d=%s", seen, compat); | |
178 | if ((buffer_size - length <= 0) || (i >= num_envp)) | |
179 | return -ENOMEM; | |
180 | length++; | |
181 | scratch += length; | |
182 | l = strlen (compat) + 1; | |
183 | compat += l; | |
184 | cplen -= l; | |
185 | seen++; | |
186 | } | |
187 | ||
188 | envp[i++] = scratch; | |
189 | length += scnprintf (scratch, buffer_size - length, | |
190 | "OF_COMPATIBLE_N=%d", seen); | |
191 | if ((buffer_size - length <= 0) || (i >= num_envp)) | |
192 | return -ENOMEM; | |
193 | ++length; | |
194 | scratch += length; | |
195 | ||
196 | envp[i] = NULL; | |
197 | ||
198 | return 0; | |
199 | } | |
200 | ||
b5bf5b67 JM |
201 | extern struct device_attribute macio_dev_attrs[]; |
202 | ||
1da177e4 LT |
203 | struct bus_type macio_bus_type = { |
204 | .name = "macio", | |
205 | .match = macio_bus_match, | |
312c004d | 206 | .uevent = macio_uevent, |
1da177e4 LT |
207 | .suspend = macio_device_suspend, |
208 | .resume = macio_device_resume, | |
b5bf5b67 | 209 | .dev_attrs = macio_dev_attrs, |
1da177e4 LT |
210 | }; |
211 | ||
212 | static int __init macio_bus_driver_init(void) | |
213 | { | |
214 | return bus_register(&macio_bus_type); | |
215 | } | |
216 | ||
217 | postcore_initcall(macio_bus_driver_init); | |
218 | ||
219 | ||
220 | /** | |
221 | * macio_release_dev - free a macio device structure when all users of it are finished. | |
222 | * @dev: device that's been disconnected | |
223 | * | |
224 | * Will be called only by the device core when all users of this macio device are | |
225 | * done. This currently means never as we don't hot remove any macio device yet, | |
226 | * though that will happen with mediabay based devices in a later implementation. | |
227 | */ | |
228 | static void macio_release_dev(struct device *dev) | |
229 | { | |
230 | struct macio_dev *mdev; | |
231 | ||
232 | mdev = to_macio_device(dev); | |
233 | kfree(mdev); | |
234 | } | |
235 | ||
236 | /** | |
237 | * macio_resource_quirks - tweak or skip some resources for a device | |
238 | * @np: pointer to the device node | |
239 | * @res: resulting resource | |
240 | * @index: index of resource in node | |
241 | * | |
242 | * If this routine returns non-null, then the resource is completely | |
243 | * skipped. | |
244 | */ | |
245 | static int macio_resource_quirks(struct device_node *np, struct resource *res, int index) | |
246 | { | |
247 | if (res->flags & IORESOURCE_MEM) { | |
248 | /* Grand Central has too large resource 0 on some machines */ | |
249 | if (index == 0 && !strcmp(np->name, "gc")) { | |
250 | np->addrs[0].size = 0x20000; | |
251 | res->end = res->start + 0x1ffff; | |
252 | } | |
253 | /* Airport has bogus resource 2 */ | |
254 | if (index >= 2 && !strcmp(np->name, "radio")) | |
255 | return 1; | |
256 | /* DBDMAs may have bogus sizes */ | |
257 | if ((res->start & 0x0001f000) == 0x00008000) { | |
258 | np->addrs[index].size = 0x100; | |
259 | res->end = res->start + 0xff; | |
260 | } | |
261 | /* ESCC parent eats child resources. We could have added a level of hierarchy, | |
262 | * but I don't really feel the need for it */ | |
263 | if (!strcmp(np->name, "escc")) | |
264 | return 1; | |
265 | /* ESCC has bogus resources >= 3 */ | |
266 | if (index >= 3 && !(strcmp(np->name, "ch-a") && strcmp(np->name, "ch-b"))) | |
267 | return 1; | |
268 | /* Media bay has too many resources, keep only first one */ | |
269 | if (index > 0 && !strcmp(np->name, "media-bay")) | |
270 | return 1; | |
271 | /* Some older IDE resources have bogus sizes */ | |
272 | if (!(strcmp(np->name, "IDE") && strcmp(np->name, "ATA") && | |
273 | strcmp(np->type, "ide") && strcmp(np->type, "ata"))) { | |
274 | if (index == 0 && np->addrs[0].size > 0x1000) { | |
275 | np->addrs[0].size = 0x1000; | |
276 | res->end = res->start + 0xfff; | |
277 | } | |
278 | if (index == 1 && np->addrs[1].size > 0x100) { | |
279 | np->addrs[1].size = 0x100; | |
280 | res->end = res->start + 0xff; | |
281 | } | |
282 | } | |
283 | } | |
284 | return 0; | |
285 | } | |
286 | ||
287 | ||
288 | /** | |
289 | * macio_add_one_device - Add one device from OF node to the device tree | |
290 | * @chip: pointer to the macio_chip holding the device | |
291 | * @np: pointer to the device node in the OF tree | |
292 | * @in_bay: set to 1 if device is part of a media-bay | |
293 | * | |
294 | * When media-bay is changed to hotswap drivers, this function will | |
295 | * be exposed to the bay driver some way... | |
296 | */ | |
297 | static struct macio_dev * macio_add_one_device(struct macio_chip *chip, struct device *parent, | |
298 | struct device_node *np, struct macio_dev *in_bay, | |
299 | struct resource *parent_res) | |
300 | { | |
301 | struct macio_dev *dev; | |
302 | int i, j; | |
303 | u32 *reg; | |
304 | ||
305 | if (np == NULL) | |
306 | return NULL; | |
307 | ||
308 | dev = kmalloc(sizeof(*dev), GFP_KERNEL); | |
309 | if (!dev) | |
310 | return NULL; | |
311 | memset(dev, 0, sizeof(*dev)); | |
312 | ||
313 | dev->bus = &chip->lbus; | |
314 | dev->media_bay = in_bay; | |
315 | dev->ofdev.node = np; | |
316 | dev->ofdev.dma_mask = 0xffffffffUL; | |
317 | dev->ofdev.dev.dma_mask = &dev->ofdev.dma_mask; | |
318 | dev->ofdev.dev.parent = parent; | |
319 | dev->ofdev.dev.bus = &macio_bus_type; | |
320 | dev->ofdev.dev.release = macio_release_dev; | |
321 | ||
322 | #ifdef DEBUG | |
323 | printk("preparing mdev @%p, ofdev @%p, dev @%p, kobj @%p\n", | |
324 | dev, &dev->ofdev, &dev->ofdev.dev, &dev->ofdev.dev.kobj); | |
325 | #endif | |
326 | ||
327 | /* MacIO itself has a different reg, we use it's PCI base */ | |
328 | if (np == chip->of_node) { | |
329 | sprintf(dev->ofdev.dev.bus_id, "%1d.%08lx:%.*s", chip->lbus.index, | |
330 | #ifdef CONFIG_PCI | |
331 | pci_resource_start(chip->lbus.pdev, 0), | |
332 | #else | |
333 | 0, /* NuBus may want to do something better here */ | |
334 | #endif | |
335 | MAX_NODE_NAME_SIZE, np->name); | |
336 | } else { | |
337 | reg = (u32 *)get_property(np, "reg", NULL); | |
338 | sprintf(dev->ofdev.dev.bus_id, "%1d.%08x:%.*s", chip->lbus.index, | |
339 | reg ? *reg : 0, MAX_NODE_NAME_SIZE, np->name); | |
340 | } | |
341 | ||
342 | /* For now, we use pre-parsed entries in the device-tree for | |
343 | * interrupt routing and addresses, but we should change that | |
344 | * to dynamically parsed entries and so get rid of most of the | |
345 | * clutter in struct device_node | |
346 | */ | |
347 | for (i = j = 0; i < np->n_intrs; i++) { | |
348 | struct resource *res = &dev->interrupt[j]; | |
349 | ||
350 | if (j >= MACIO_DEV_COUNT_IRQS) | |
351 | break; | |
352 | res->start = np->intrs[i].line; | |
353 | res->flags = IORESOURCE_IO; | |
354 | if (np->intrs[j].sense) | |
355 | res->flags |= IORESOURCE_IRQ_LOWLEVEL; | |
356 | else | |
357 | res->flags |= IORESOURCE_IRQ_HIGHEDGE; | |
358 | res->name = dev->ofdev.dev.bus_id; | |
359 | if (macio_resource_quirks(np, res, i)) | |
360 | memset(res, 0, sizeof(struct resource)); | |
361 | else | |
362 | j++; | |
363 | } | |
364 | dev->n_interrupts = j; | |
365 | for (i = j = 0; i < np->n_addrs; i++) { | |
366 | struct resource *res = &dev->resource[j]; | |
367 | ||
368 | if (j >= MACIO_DEV_COUNT_RESOURCES) | |
369 | break; | |
370 | res->start = np->addrs[i].address; | |
371 | res->end = np->addrs[i].address + np->addrs[i].size - 1; | |
372 | res->flags = IORESOURCE_MEM; | |
373 | res->name = dev->ofdev.dev.bus_id; | |
374 | if (macio_resource_quirks(np, res, i)) | |
375 | memset(res, 0, sizeof(struct resource)); | |
376 | else { | |
377 | j++; | |
378 | /* Currently, we consider failure as harmless, this may | |
379 | * change in the future, once I've found all the device | |
380 | * tree bugs in older machines & worked around them | |
381 | */ | |
382 | if (insert_resource(parent_res, res)) | |
383 | printk(KERN_WARNING "Can't request resource %d for MacIO" | |
384 | " device %s\n", i, dev->ofdev.dev.bus_id); | |
385 | } | |
386 | } | |
387 | dev->n_resources = j; | |
388 | ||
389 | if (of_device_register(&dev->ofdev) != 0) { | |
390 | printk(KERN_DEBUG"macio: device registration error for %s!\n", | |
391 | dev->ofdev.dev.bus_id); | |
392 | kfree(dev); | |
393 | return NULL; | |
394 | } | |
395 | ||
396 | return dev; | |
397 | } | |
398 | ||
399 | static int macio_skip_device(struct device_node *np) | |
400 | { | |
401 | if (strncmp(np->name, "battery", 7) == 0) | |
402 | return 1; | |
403 | if (strncmp(np->name, "escc-legacy", 11) == 0) | |
404 | return 1; | |
405 | return 0; | |
406 | } | |
407 | ||
408 | /** | |
409 | * macio_pci_add_devices - Adds sub-devices of mac-io to the device tree | |
410 | * @chip: pointer to the macio_chip holding the devices | |
411 | * | |
412 | * This function will do the job of extracting devices from the | |
413 | * Open Firmware device tree, build macio_dev structures and add | |
414 | * them to the Linux device tree. | |
415 | * | |
416 | * For now, childs of media-bay are added now as well. This will | |
417 | * change rsn though. | |
418 | */ | |
419 | static void macio_pci_add_devices(struct macio_chip *chip) | |
420 | { | |
421 | struct device_node *np, *pnode; | |
422 | struct macio_dev *rdev, *mdev, *mbdev = NULL, *sdev = NULL; | |
423 | struct device *parent = NULL; | |
424 | struct resource *root_res = &iomem_resource; | |
425 | ||
426 | /* Add a node for the macio bus itself */ | |
427 | #ifdef CONFIG_PCI | |
428 | if (chip->lbus.pdev) { | |
429 | parent = &chip->lbus.pdev->dev; | |
430 | root_res = &chip->lbus.pdev->resource[0]; | |
431 | } | |
432 | #endif | |
433 | pnode = of_node_get(chip->of_node); | |
434 | if (pnode == NULL) | |
435 | return; | |
436 | ||
437 | /* Add macio itself to hierarchy */ | |
438 | rdev = macio_add_one_device(chip, parent, pnode, NULL, root_res); | |
439 | if (rdev == NULL) | |
440 | return; | |
441 | root_res = &rdev->resource[0]; | |
442 | ||
443 | /* First scan 1st level */ | |
444 | for (np = NULL; (np = of_get_next_child(pnode, np)) != NULL;) { | |
445 | if (!macio_skip_device(np)) { | |
446 | of_node_get(np); | |
447 | mdev = macio_add_one_device(chip, &rdev->ofdev.dev, np, NULL, root_res); | |
448 | if (mdev == NULL) | |
449 | of_node_put(np); | |
450 | else if (strncmp(np->name, "media-bay", 9) == 0) | |
451 | mbdev = mdev; | |
452 | else if (strncmp(np->name, "escc", 4) == 0) | |
453 | sdev = mdev; | |
454 | } | |
455 | } | |
456 | ||
457 | /* Add media bay devices if any */ | |
458 | if (mbdev) | |
459 | for (np = NULL; (np = of_get_next_child(mbdev->ofdev.node, np)) != NULL;) | |
460 | if (!macio_skip_device(np)) { | |
461 | of_node_get(np); | |
462 | if (macio_add_one_device(chip, &mbdev->ofdev.dev, np, mbdev, | |
463 | root_res) == NULL) | |
464 | of_node_put(np); | |
465 | } | |
466 | /* Add serial ports if any */ | |
467 | if (sdev) { | |
468 | for (np = NULL; (np = of_get_next_child(sdev->ofdev.node, np)) != NULL;) | |
469 | if (!macio_skip_device(np)) { | |
470 | of_node_get(np); | |
471 | if (macio_add_one_device(chip, &sdev->ofdev.dev, np, NULL, | |
472 | root_res) == NULL) | |
473 | of_node_put(np); | |
474 | } | |
475 | } | |
476 | } | |
477 | ||
478 | ||
479 | /** | |
480 | * macio_register_driver - Registers a new MacIO device driver | |
481 | * @drv: pointer to the driver definition structure | |
482 | */ | |
483 | int macio_register_driver(struct macio_driver *drv) | |
484 | { | |
485 | int count = 0; | |
486 | ||
487 | /* initialize common driver fields */ | |
488 | drv->driver.name = drv->name; | |
489 | drv->driver.bus = &macio_bus_type; | |
490 | drv->driver.probe = macio_device_probe; | |
491 | drv->driver.remove = macio_device_remove; | |
492 | drv->driver.shutdown = macio_device_shutdown; | |
493 | ||
494 | /* register with core */ | |
495 | count = driver_register(&drv->driver); | |
496 | return count ? count : 1; | |
497 | } | |
498 | ||
499 | /** | |
500 | * macio_unregister_driver - Unregisters a new MacIO device driver | |
501 | * @drv: pointer to the driver definition structure | |
502 | */ | |
503 | void macio_unregister_driver(struct macio_driver *drv) | |
504 | { | |
505 | driver_unregister(&drv->driver); | |
506 | } | |
507 | ||
508 | /** | |
509 | * macio_request_resource - Request an MMIO resource | |
510 | * @dev: pointer to the device holding the resource | |
511 | * @resource_no: resource number to request | |
512 | * @name: resource name | |
513 | * | |
514 | * Mark memory region number @resource_no associated with MacIO | |
515 | * device @dev as being reserved by owner @name. Do not access | |
516 | * any address inside the memory regions unless this call returns | |
517 | * successfully. | |
518 | * | |
519 | * Returns 0 on success, or %EBUSY on error. A warning | |
520 | * message is also printed on failure. | |
521 | */ | |
522 | int macio_request_resource(struct macio_dev *dev, int resource_no, const char *name) | |
523 | { | |
524 | if (macio_resource_len(dev, resource_no) == 0) | |
525 | return 0; | |
526 | ||
527 | if (!request_mem_region(macio_resource_start(dev, resource_no), | |
528 | macio_resource_len(dev, resource_no), | |
529 | name)) | |
530 | goto err_out; | |
531 | ||
532 | return 0; | |
533 | ||
534 | err_out: | |
535 | printk (KERN_WARNING "MacIO: Unable to reserve resource #%d:%lx@%lx" | |
536 | " for device %s\n", | |
537 | resource_no, | |
538 | macio_resource_len(dev, resource_no), | |
539 | macio_resource_start(dev, resource_no), | |
540 | dev->ofdev.dev.bus_id); | |
541 | return -EBUSY; | |
542 | } | |
543 | ||
544 | /** | |
545 | * macio_release_resource - Release an MMIO resource | |
546 | * @dev: pointer to the device holding the resource | |
547 | * @resource_no: resource number to release | |
548 | */ | |
549 | void macio_release_resource(struct macio_dev *dev, int resource_no) | |
550 | { | |
551 | if (macio_resource_len(dev, resource_no) == 0) | |
552 | return; | |
553 | release_mem_region(macio_resource_start(dev, resource_no), | |
554 | macio_resource_len(dev, resource_no)); | |
555 | } | |
556 | ||
557 | /** | |
558 | * macio_request_resources - Reserve all memory resources | |
559 | * @dev: MacIO device whose resources are to be reserved | |
560 | * @name: Name to be associated with resource. | |
561 | * | |
562 | * Mark all memory regions associated with MacIO device @dev as | |
563 | * being reserved by owner @name. Do not access any address inside | |
564 | * the memory regions unless this call returns successfully. | |
565 | * | |
566 | * Returns 0 on success, or %EBUSY on error. A warning | |
567 | * message is also printed on failure. | |
568 | */ | |
569 | int macio_request_resources(struct macio_dev *dev, const char *name) | |
570 | { | |
571 | int i; | |
572 | ||
573 | for (i = 0; i < dev->n_resources; i++) | |
574 | if (macio_request_resource(dev, i, name)) | |
575 | goto err_out; | |
576 | return 0; | |
577 | ||
578 | err_out: | |
579 | while(--i >= 0) | |
580 | macio_release_resource(dev, i); | |
581 | ||
582 | return -EBUSY; | |
583 | } | |
584 | ||
585 | /** | |
586 | * macio_release_resources - Release reserved memory resources | |
587 | * @dev: MacIO device whose resources were previously reserved | |
588 | */ | |
589 | ||
590 | void macio_release_resources(struct macio_dev *dev) | |
591 | { | |
592 | int i; | |
593 | ||
594 | for (i = 0; i < dev->n_resources; i++) | |
595 | macio_release_resource(dev, i); | |
596 | } | |
597 | ||
598 | ||
599 | #ifdef CONFIG_PCI | |
600 | ||
601 | static int __devinit macio_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) | |
602 | { | |
603 | struct device_node* np; | |
604 | struct macio_chip* chip; | |
605 | ||
606 | if (ent->vendor != PCI_VENDOR_ID_APPLE) | |
607 | return -ENODEV; | |
608 | ||
609 | /* Note regarding refcounting: We assume pci_device_to_OF_node() is ported | |
610 | * to new OF APIs and returns a node with refcount incremented. This isn't | |
611 | * the case today, but on the other hand ppc32 doesn't do refcounting. This | |
612 | * will have to be fixed when going to ppc64. --BenH. | |
613 | */ | |
614 | np = pci_device_to_OF_node(pdev); | |
615 | if (np == NULL) | |
616 | return -ENODEV; | |
617 | ||
618 | /* This assumption is wrong, fix that here for now until I fix the arch */ | |
619 | of_node_get(np); | |
620 | ||
621 | /* We also assume that pmac_feature will have done a get() on nodes stored | |
622 | * in the macio chips array | |
623 | */ | |
624 | chip = macio_find(np, macio_unknown); | |
625 | of_node_put(np); | |
626 | if (chip == NULL) | |
627 | return -ENODEV; | |
628 | ||
629 | /* XXX Need locking ??? */ | |
630 | if (chip->lbus.pdev == NULL) { | |
631 | chip->lbus.pdev = pdev; | |
632 | chip->lbus.chip = chip; | |
633 | pci_set_drvdata(pdev, &chip->lbus); | |
634 | pci_set_master(pdev); | |
635 | } | |
636 | ||
637 | printk(KERN_INFO "MacIO PCI driver attached to %s chipset\n", | |
638 | chip->name); | |
639 | ||
640 | /* | |
641 | * HACK ALERT: The WallStreet PowerBook and some OHare based machines | |
642 | * have 2 macio ASICs. I must probe the "main" one first or IDE ordering | |
643 | * will be incorrect. So I put on "hold" the second one since it seem to | |
644 | * appear first on PCI | |
645 | */ | |
646 | if (chip->type == macio_gatwick || chip->type == macio_ohareII) | |
647 | if (macio_chips[0].lbus.pdev == NULL) { | |
648 | macio_on_hold = chip; | |
649 | return 0; | |
650 | } | |
651 | ||
652 | macio_pci_add_devices(chip); | |
653 | if (macio_on_hold && macio_chips[0].lbus.pdev != NULL) { | |
654 | macio_pci_add_devices(macio_on_hold); | |
655 | macio_on_hold = NULL; | |
656 | } | |
657 | ||
658 | return 0; | |
659 | } | |
660 | ||
661 | static void __devexit macio_pci_remove(struct pci_dev* pdev) | |
662 | { | |
663 | panic("removing of macio-asic not supported !\n"); | |
664 | } | |
665 | ||
666 | /* | |
667 | * MacIO is matched against any Apple ID, it's probe() function | |
668 | * will then decide wether it applies or not | |
669 | */ | |
670 | static const struct pci_device_id __devinitdata pci_ids [] = { { | |
671 | .vendor = PCI_VENDOR_ID_APPLE, | |
672 | .device = PCI_ANY_ID, | |
673 | .subvendor = PCI_ANY_ID, | |
674 | .subdevice = PCI_ANY_ID, | |
675 | ||
676 | }, { /* end: all zeroes */ } | |
677 | }; | |
678 | MODULE_DEVICE_TABLE (pci, pci_ids); | |
679 | ||
680 | /* pci driver glue; this is a "new style" PCI driver module */ | |
681 | static struct pci_driver macio_pci_driver = { | |
682 | .name = (char *) "macio", | |
683 | .id_table = pci_ids, | |
684 | ||
685 | .probe = macio_pci_probe, | |
686 | .remove = macio_pci_remove, | |
687 | }; | |
688 | ||
689 | #endif /* CONFIG_PCI */ | |
690 | ||
691 | static int __init macio_module_init (void) | |
692 | { | |
693 | #ifdef CONFIG_PCI | |
694 | int rc; | |
695 | ||
696 | rc = pci_register_driver(&macio_pci_driver); | |
697 | if (rc) | |
698 | return rc; | |
699 | #endif /* CONFIG_PCI */ | |
700 | return 0; | |
701 | } | |
702 | ||
703 | module_init(macio_module_init); | |
704 | ||
705 | EXPORT_SYMBOL(macio_register_driver); | |
706 | EXPORT_SYMBOL(macio_unregister_driver); | |
707 | EXPORT_SYMBOL(macio_dev_get); | |
708 | EXPORT_SYMBOL(macio_dev_put); | |
709 | EXPORT_SYMBOL(macio_request_resource); | |
710 | EXPORT_SYMBOL(macio_release_resource); | |
711 | EXPORT_SYMBOL(macio_request_resources); | |
712 | EXPORT_SYMBOL(macio_release_resources); |