Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * IBM PowerPC Virtual I/O Infrastructure Support. | |
3 | * | |
19dbd0f6 | 4 | * Copyright (c) 2003-2005 IBM Corp. |
1da177e4 LT |
5 | * Dave Engebretsen engebret@us.ibm.com |
6 | * Santiago Leon santil@us.ibm.com | |
7 | * Hollis Blanchard <hollisb@us.ibm.com> | |
19dbd0f6 | 8 | * Stephen Rothwell |
1da177e4 LT |
9 | * |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public License | |
12 | * as published by the Free Software Foundation; either version | |
13 | * 2 of the License, or (at your option) any later version. | |
14 | */ | |
15 | ||
c7f0e8cb SR |
16 | #include <linux/types.h> |
17 | #include <linux/device.h> | |
1da177e4 LT |
18 | #include <linux/init.h> |
19 | #include <linux/console.h> | |
1da177e4 | 20 | #include <linux/module.h> |
1da177e4 LT |
21 | #include <linux/mm.h> |
22 | #include <linux/dma-mapping.h> | |
c7f0e8cb SR |
23 | #include <linux/kobject.h> |
24 | ||
1da177e4 LT |
25 | #include <asm/iommu.h> |
26 | #include <asm/dma.h> | |
1da177e4 | 27 | #include <asm/vio.h> |
143dcec2 | 28 | #include <asm/prom.h> |
e10fa773 | 29 | #include <asm/firmware.h> |
c7f0e8cb SR |
30 | #include <asm/tce.h> |
31 | #include <asm/abs_addr.h> | |
32 | #include <asm/page.h> | |
33 | #include <asm/hvcall.h> | |
34 | #include <asm/iseries/vio.h> | |
35 | #include <asm/iseries/hv_types.h> | |
36 | #include <asm/iseries/hv_lp_config.h> | |
37 | #include <asm/iseries/hv_call_xm.h> | |
38 | #include <asm/iseries/iommu.h> | |
39 | ||
40 | extern struct subsystem devices_subsys; /* needed for vio_find_name() */ | |
41 | ||
42 | static struct vio_dev vio_bus_device = { /* fake "parent" device */ | |
ac5b33c9 SR |
43 | .name = vio_bus_device.dev.bus_id, |
44 | .type = "", | |
ac5b33c9 SR |
45 | .dev.bus_id = "vio", |
46 | .dev.bus = &vio_bus_type, | |
1da177e4 | 47 | }; |
ac5b33c9 | 48 | |
c7f0e8cb SR |
49 | #ifdef CONFIG_PPC_ISERIES |
50 | struct device *iSeries_vio_dev = &vio_bus_device.dev; | |
51 | EXPORT_SYMBOL(iSeries_vio_dev); | |
52 | ||
53 | static struct iommu_table veth_iommu_table; | |
54 | static struct iommu_table vio_iommu_table; | |
55 | ||
56 | static void __init iommu_vio_init(void) | |
57 | { | |
58 | iommu_table_getparms_iSeries(255, 0, 0xff, &veth_iommu_table); | |
59 | veth_iommu_table.it_size /= 2; | |
60 | vio_iommu_table = veth_iommu_table; | |
61 | vio_iommu_table.it_offset += veth_iommu_table.it_size; | |
62 | ||
ca1588e7 | 63 | if (!iommu_init_table(&veth_iommu_table, -1)) |
c7f0e8cb | 64 | printk("Virtual Bus VETH TCE table failed.\n"); |
ca1588e7 | 65 | if (!iommu_init_table(&vio_iommu_table, -1)) |
c7f0e8cb SR |
66 | printk("Virtual Bus VIO TCE table failed.\n"); |
67 | } | |
68 | #endif | |
69 | ||
70 | static struct iommu_table *vio_build_iommu_table(struct vio_dev *dev) | |
71 | { | |
72 | #ifdef CONFIG_PPC_ISERIES | |
73 | if (firmware_has_feature(FW_FEATURE_ISERIES)) { | |
1dc461f0 | 74 | if (strcmp(dev->type, "network") == 0) |
c7f0e8cb SR |
75 | return &veth_iommu_table; |
76 | return &vio_iommu_table; | |
77 | } else | |
78 | #endif | |
79 | { | |
4c76e0bc JK |
80 | unsigned char *dma_window; |
81 | struct iommu_table *tbl; | |
82 | unsigned long offset, size; | |
c7f0e8cb | 83 | |
4c76e0bc JK |
84 | dma_window = get_property(dev->dev.platform_data, |
85 | "ibm,my-dma-window", NULL); | |
c7f0e8cb SR |
86 | if (!dma_window) |
87 | return NULL; | |
88 | ||
4c76e0bc | 89 | tbl = kmalloc(sizeof(*tbl), GFP_KERNEL); |
c7f0e8cb | 90 | |
4c76e0bc JK |
91 | of_parse_dma_window(dev->dev.platform_data, dma_window, |
92 | &tbl->it_index, &offset, &size); | |
c7f0e8cb SR |
93 | |
94 | /* TCE table size - measured in tce entries */ | |
4c76e0bc | 95 | tbl->it_size = size >> PAGE_SHIFT; |
c7f0e8cb | 96 | /* offset for VIO should always be 0 */ |
4c76e0bc JK |
97 | tbl->it_offset = offset >> PAGE_SHIFT; |
98 | tbl->it_busno = 0; | |
99 | tbl->it_type = TCE_VB; | |
c7f0e8cb | 100 | |
ca1588e7 | 101 | return iommu_init_table(tbl, -1); |
c7f0e8cb SR |
102 | } |
103 | } | |
1da177e4 | 104 | |
e10fa773 SR |
105 | /** |
106 | * vio_match_device: - Tell if a VIO device has a matching | |
107 | * VIO device id structure. | |
108 | * @ids: array of VIO device id structures to search in | |
109 | * @dev: the VIO device structure to match against | |
110 | * | |
111 | * Used by a driver to check whether a VIO device present in the | |
112 | * system is in its list of supported devices. Returns the matching | |
113 | * vio_device_id structure or NULL if there is no match. | |
114 | */ | |
115 | static const struct vio_device_id *vio_match_device( | |
116 | const struct vio_device_id *ids, const struct vio_dev *dev) | |
117 | { | |
118 | while (ids->type[0] != '\0') { | |
dd721ffd SR |
119 | if ((strncmp(dev->type, ids->type, strlen(ids->type)) == 0) && |
120 | device_is_compatible(dev->dev.platform_data, ids->compat)) | |
e10fa773 SR |
121 | return ids; |
122 | ids++; | |
123 | } | |
124 | return NULL; | |
125 | } | |
126 | ||
5c0b4b87 SR |
127 | /* |
128 | * Convert from struct device to struct vio_dev and pass to driver. | |
1da177e4 | 129 | * dev->driver has already been set by generic code because vio_bus_match |
5c0b4b87 SR |
130 | * succeeded. |
131 | */ | |
1da177e4 LT |
132 | static int vio_bus_probe(struct device *dev) |
133 | { | |
134 | struct vio_dev *viodev = to_vio_dev(dev); | |
135 | struct vio_driver *viodrv = to_vio_driver(dev->driver); | |
136 | const struct vio_device_id *id; | |
137 | int error = -ENODEV; | |
138 | ||
1da177e4 LT |
139 | if (!viodrv->probe) |
140 | return error; | |
141 | ||
142 | id = vio_match_device(viodrv->id_table, viodev); | |
5c0b4b87 | 143 | if (id) |
1da177e4 | 144 | error = viodrv->probe(viodev, id); |
1da177e4 LT |
145 | |
146 | return error; | |
147 | } | |
148 | ||
149 | /* convert from struct device to struct vio_dev and pass to driver. */ | |
150 | static int vio_bus_remove(struct device *dev) | |
151 | { | |
152 | struct vio_dev *viodev = to_vio_dev(dev); | |
153 | struct vio_driver *viodrv = to_vio_driver(dev->driver); | |
154 | ||
5c0b4b87 | 155 | if (viodrv->remove) |
1da177e4 | 156 | return viodrv->remove(viodev); |
1da177e4 LT |
157 | |
158 | /* driver can't remove */ | |
159 | return 1; | |
160 | } | |
161 | ||
34060104 SR |
162 | /* convert from struct device to struct vio_dev and pass to driver. */ |
163 | static void vio_bus_shutdown(struct device *dev) | |
164 | { | |
165 | struct vio_dev *viodev = to_vio_dev(dev); | |
166 | struct vio_driver *viodrv = to_vio_driver(dev->driver); | |
167 | ||
2f53a80f | 168 | if (dev->driver && viodrv->shutdown) |
34060104 SR |
169 | viodrv->shutdown(viodev); |
170 | } | |
171 | ||
1da177e4 LT |
172 | /** |
173 | * vio_register_driver: - Register a new vio driver | |
174 | * @drv: The vio_driver structure to be registered. | |
175 | */ | |
176 | int vio_register_driver(struct vio_driver *viodrv) | |
177 | { | |
178 | printk(KERN_DEBUG "%s: driver %s registering\n", __FUNCTION__, | |
6fdf5392 | 179 | viodrv->driver.name); |
1da177e4 LT |
180 | |
181 | /* fill in 'struct driver' fields */ | |
1da177e4 | 182 | viodrv->driver.bus = &vio_bus_type; |
1da177e4 LT |
183 | |
184 | return driver_register(&viodrv->driver); | |
185 | } | |
186 | EXPORT_SYMBOL(vio_register_driver); | |
187 | ||
188 | /** | |
189 | * vio_unregister_driver - Remove registration of vio driver. | |
190 | * @driver: The vio_driver struct to be removed form registration | |
191 | */ | |
192 | void vio_unregister_driver(struct vio_driver *viodrv) | |
193 | { | |
194 | driver_unregister(&viodrv->driver); | |
195 | } | |
196 | EXPORT_SYMBOL(vio_unregister_driver); | |
197 | ||
c7f0e8cb SR |
198 | /* vio_dev refcount hit 0 */ |
199 | static void __devinit vio_dev_release(struct device *dev) | |
200 | { | |
201 | if (dev->platform_data) { | |
202 | /* XXX free TCE table */ | |
203 | of_node_put(dev->platform_data); | |
204 | } | |
205 | kfree(to_vio_dev(dev)); | |
206 | } | |
207 | ||
1da177e4 | 208 | /** |
e10fa773 SR |
209 | * vio_register_device_node: - Register a new vio device. |
210 | * @of_node: The OF node for this device. | |
1da177e4 | 211 | * |
e10fa773 SR |
212 | * Creates and initializes a vio_dev structure from the data in |
213 | * of_node (dev.platform_data) and adds it to the list of virtual devices. | |
214 | * Returns a pointer to the created vio_dev or NULL if node has | |
215 | * NULL device_type or compatible fields. | |
1da177e4 | 216 | */ |
e10fa773 | 217 | struct vio_dev * __devinit vio_register_device_node(struct device_node *of_node) |
1da177e4 | 218 | { |
e10fa773 SR |
219 | struct vio_dev *viodev; |
220 | unsigned int *unit_address; | |
e10fa773 SR |
221 | |
222 | /* we need the 'device_type' property, in order to match with drivers */ | |
223 | if (of_node->type == NULL) { | |
224 | printk(KERN_WARNING "%s: node %s missing 'device_type'\n", | |
225 | __FUNCTION__, | |
226 | of_node->name ? of_node->name : "<unknown>"); | |
227 | return NULL; | |
1da177e4 | 228 | } |
e10fa773 SR |
229 | |
230 | unit_address = (unsigned int *)get_property(of_node, "reg", NULL); | |
231 | if (unit_address == NULL) { | |
232 | printk(KERN_WARNING "%s: node %s missing 'reg'\n", | |
233 | __FUNCTION__, | |
234 | of_node->name ? of_node->name : "<unknown>"); | |
235 | return NULL; | |
236 | } | |
237 | ||
238 | /* allocate a vio_dev for this node */ | |
239 | viodev = kzalloc(sizeof(struct vio_dev), GFP_KERNEL); | |
240 | if (viodev == NULL) | |
241 | return NULL; | |
242 | ||
243 | viodev->dev.platform_data = of_node_get(of_node); | |
244 | ||
0ebfff14 | 245 | viodev->irq = irq_of_parse_and_map(of_node, 0); |
e10fa773 SR |
246 | |
247 | snprintf(viodev->dev.bus_id, BUS_ID_SIZE, "%x", *unit_address); | |
248 | viodev->name = of_node->name; | |
249 | viodev->type = of_node->type; | |
250 | viodev->unit_address = *unit_address; | |
251 | if (firmware_has_feature(FW_FEATURE_ISERIES)) { | |
252 | unit_address = (unsigned int *)get_property(of_node, | |
253 | "linux,unit_address", NULL); | |
254 | if (unit_address != NULL) | |
255 | viodev->unit_address = *unit_address; | |
256 | } | |
c7f0e8cb SR |
257 | viodev->iommu_table = vio_build_iommu_table(viodev); |
258 | ||
259 | /* init generic 'struct device' fields: */ | |
260 | viodev->dev.parent = &vio_bus_device.dev; | |
261 | viodev->dev.bus = &vio_bus_type; | |
262 | viodev->dev.release = vio_dev_release; | |
e10fa773 SR |
263 | |
264 | /* register with generic device framework */ | |
c7f0e8cb SR |
265 | if (device_register(&viodev->dev)) { |
266 | printk(KERN_ERR "%s: failed to register device %s\n", | |
267 | __FUNCTION__, viodev->dev.bus_id); | |
e10fa773 SR |
268 | /* XXX free TCE table */ |
269 | kfree(viodev); | |
270 | return NULL; | |
271 | } | |
272 | ||
273 | return viodev; | |
1da177e4 | 274 | } |
e10fa773 | 275 | EXPORT_SYMBOL(vio_register_device_node); |
1da177e4 | 276 | |
1da177e4 LT |
277 | /** |
278 | * vio_bus_init: - Initialize the virtual IO bus | |
279 | */ | |
c7f0e8cb | 280 | static int __init vio_bus_init(void) |
1da177e4 LT |
281 | { |
282 | int err; | |
e10fa773 | 283 | struct device_node *node_vroot; |
1da177e4 | 284 | |
c7f0e8cb SR |
285 | #ifdef CONFIG_PPC_ISERIES |
286 | if (firmware_has_feature(FW_FEATURE_ISERIES)) { | |
287 | iommu_vio_init(); | |
288 | vio_bus_device.iommu_table = &vio_iommu_table; | |
289 | iSeries_vio_dev = &vio_bus_device.dev; | |
290 | } | |
291 | #endif | |
6312236f | 292 | |
1da177e4 LT |
293 | err = bus_register(&vio_bus_type); |
294 | if (err) { | |
295 | printk(KERN_ERR "failed to register VIO bus\n"); | |
296 | return err; | |
297 | } | |
298 | ||
5c0b4b87 SR |
299 | /* |
300 | * The fake parent of all vio devices, just to give us | |
3e494c80 SR |
301 | * a nice directory |
302 | */ | |
ac5b33c9 | 303 | err = device_register(&vio_bus_device.dev); |
1da177e4 | 304 | if (err) { |
3e494c80 SR |
305 | printk(KERN_WARNING "%s: device_register returned %i\n", |
306 | __FUNCTION__, err); | |
1da177e4 LT |
307 | return err; |
308 | } | |
309 | ||
e10fa773 SR |
310 | node_vroot = find_devices("vdevice"); |
311 | if (node_vroot) { | |
312 | struct device_node *of_node; | |
313 | ||
314 | /* | |
315 | * Create struct vio_devices for each virtual device in | |
316 | * the device tree. Drivers will associate with them later. | |
317 | */ | |
318 | for (of_node = node_vroot->child; of_node != NULL; | |
319 | of_node = of_node->sibling) { | |
320 | printk(KERN_DEBUG "%s: processing %p\n", | |
321 | __FUNCTION__, of_node); | |
322 | vio_register_device_node(of_node); | |
323 | } | |
324 | } | |
325 | ||
3e494c80 SR |
326 | return 0; |
327 | } | |
c7f0e8cb | 328 | __initcall(vio_bus_init); |
1da177e4 | 329 | |
e10fa773 | 330 | static ssize_t name_show(struct device *dev, |
5c0b4b87 | 331 | struct device_attribute *attr, char *buf) |
1da177e4 LT |
332 | { |
333 | return sprintf(buf, "%s\n", to_vio_dev(dev)->name); | |
334 | } | |
e10fa773 SR |
335 | |
336 | static ssize_t devspec_show(struct device *dev, | |
337 | struct device_attribute *attr, char *buf) | |
338 | { | |
339 | struct device_node *of_node = dev->platform_data; | |
340 | ||
341 | return sprintf(buf, "%s\n", of_node ? of_node->full_name : "none"); | |
342 | } | |
343 | ||
344 | static struct device_attribute vio_dev_attrs[] = { | |
345 | __ATTR_RO(name), | |
346 | __ATTR_RO(devspec), | |
347 | __ATTR_NULL | |
348 | }; | |
1da177e4 | 349 | |
1da177e4 LT |
350 | void __devinit vio_unregister_device(struct vio_dev *viodev) |
351 | { | |
1da177e4 LT |
352 | device_unregister(&viodev->dev); |
353 | } | |
354 | EXPORT_SYMBOL(vio_unregister_device); | |
355 | ||
1da177e4 LT |
356 | static dma_addr_t vio_map_single(struct device *dev, void *vaddr, |
357 | size_t size, enum dma_data_direction direction) | |
358 | { | |
359 | return iommu_map_single(to_vio_dev(dev)->iommu_table, vaddr, size, | |
7daa411b | 360 | ~0ul, direction); |
1da177e4 LT |
361 | } |
362 | ||
363 | static void vio_unmap_single(struct device *dev, dma_addr_t dma_handle, | |
364 | size_t size, enum dma_data_direction direction) | |
365 | { | |
366 | iommu_unmap_single(to_vio_dev(dev)->iommu_table, dma_handle, size, | |
367 | direction); | |
368 | } | |
369 | ||
370 | static int vio_map_sg(struct device *dev, struct scatterlist *sglist, | |
371 | int nelems, enum dma_data_direction direction) | |
372 | { | |
373 | return iommu_map_sg(dev, to_vio_dev(dev)->iommu_table, sglist, | |
7daa411b | 374 | nelems, ~0ul, direction); |
1da177e4 LT |
375 | } |
376 | ||
377 | static void vio_unmap_sg(struct device *dev, struct scatterlist *sglist, | |
378 | int nelems, enum dma_data_direction direction) | |
379 | { | |
380 | iommu_unmap_sg(to_vio_dev(dev)->iommu_table, sglist, nelems, direction); | |
381 | } | |
382 | ||
383 | static void *vio_alloc_coherent(struct device *dev, size_t size, | |
dd0fc66f | 384 | dma_addr_t *dma_handle, gfp_t flag) |
1da177e4 LT |
385 | { |
386 | return iommu_alloc_coherent(to_vio_dev(dev)->iommu_table, size, | |
8eb6c6e3 | 387 | dma_handle, ~0ul, flag, -1); |
1da177e4 LT |
388 | } |
389 | ||
390 | static void vio_free_coherent(struct device *dev, size_t size, | |
391 | void *vaddr, dma_addr_t dma_handle) | |
392 | { | |
393 | iommu_free_coherent(to_vio_dev(dev)->iommu_table, size, vaddr, | |
394 | dma_handle); | |
395 | } | |
396 | ||
397 | static int vio_dma_supported(struct device *dev, u64 mask) | |
398 | { | |
399 | return 1; | |
400 | } | |
401 | ||
402 | struct dma_mapping_ops vio_dma_ops = { | |
403 | .alloc_coherent = vio_alloc_coherent, | |
404 | .free_coherent = vio_free_coherent, | |
405 | .map_single = vio_map_single, | |
406 | .unmap_single = vio_unmap_single, | |
407 | .map_sg = vio_map_sg, | |
408 | .unmap_sg = vio_unmap_sg, | |
409 | .dma_supported = vio_dma_supported, | |
410 | }; | |
411 | ||
412 | static int vio_bus_match(struct device *dev, struct device_driver *drv) | |
413 | { | |
414 | const struct vio_dev *vio_dev = to_vio_dev(dev); | |
415 | struct vio_driver *vio_drv = to_vio_driver(drv); | |
416 | const struct vio_device_id *ids = vio_drv->id_table; | |
1da177e4 | 417 | |
5c0b4b87 | 418 | return (ids != NULL) && (vio_match_device(ids, vio_dev) != NULL); |
1da177e4 LT |
419 | } |
420 | ||
143dcec2 OH |
421 | static int vio_hotplug(struct device *dev, char **envp, int num_envp, |
422 | char *buffer, int buffer_size) | |
423 | { | |
424 | const struct vio_dev *vio_dev = to_vio_dev(dev); | |
e10fa773 | 425 | struct device_node *dn = dev->platform_data; |
143dcec2 OH |
426 | char *cp; |
427 | int length; | |
428 | ||
429 | if (!num_envp) | |
430 | return -ENOMEM; | |
431 | ||
e10fa773 | 432 | if (!dn) |
143dcec2 | 433 | return -ENODEV; |
e10fa773 | 434 | cp = (char *)get_property(dn, "compatible", &length); |
143dcec2 OH |
435 | if (!cp) |
436 | return -ENODEV; | |
437 | ||
438 | envp[0] = buffer; | |
439 | length = scnprintf(buffer, buffer_size, "MODALIAS=vio:T%sS%s", | |
440 | vio_dev->type, cp); | |
e10fa773 | 441 | if ((buffer_size - length) <= 0) |
143dcec2 OH |
442 | return -ENOMEM; |
443 | envp[1] = NULL; | |
444 | return 0; | |
445 | } | |
446 | ||
1da177e4 LT |
447 | struct bus_type vio_bus_type = { |
448 | .name = "vio", | |
e10fa773 | 449 | .dev_attrs = vio_dev_attrs, |
312c004d | 450 | .uevent = vio_hotplug, |
1da177e4 | 451 | .match = vio_bus_match, |
2f53a80f RK |
452 | .probe = vio_bus_probe, |
453 | .remove = vio_bus_remove, | |
454 | .shutdown = vio_bus_shutdown, | |
1da177e4 | 455 | }; |
e10fa773 SR |
456 | |
457 | /** | |
458 | * vio_get_attribute: - get attribute for virtual device | |
459 | * @vdev: The vio device to get property. | |
460 | * @which: The property/attribute to be extracted. | |
461 | * @length: Pointer to length of returned data size (unused if NULL). | |
462 | * | |
463 | * Calls prom.c's get_property() to return the value of the | |
464 | * attribute specified by @which | |
465 | */ | |
466 | const void *vio_get_attribute(struct vio_dev *vdev, char *which, int *length) | |
467 | { | |
468 | return get_property(vdev->dev.platform_data, which, length); | |
469 | } | |
470 | EXPORT_SYMBOL(vio_get_attribute); | |
c7f0e8cb SR |
471 | |
472 | #ifdef CONFIG_PPC_PSERIES | |
473 | /* vio_find_name() - internal because only vio.c knows how we formatted the | |
474 | * kobject name | |
475 | * XXX once vio_bus_type.devices is actually used as a kset in | |
476 | * drivers/base/bus.c, this function should be removed in favor of | |
477 | * "device_find(kobj_name, &vio_bus_type)" | |
478 | */ | |
479 | static struct vio_dev *vio_find_name(const char *kobj_name) | |
480 | { | |
481 | struct kobject *found; | |
482 | ||
483 | found = kset_find_obj(&devices_subsys.kset, kobj_name); | |
484 | if (!found) | |
485 | return NULL; | |
486 | ||
487 | return to_vio_dev(container_of(found, struct device, kobj)); | |
488 | } | |
489 | ||
490 | /** | |
491 | * vio_find_node - find an already-registered vio_dev | |
492 | * @vnode: device_node of the virtual device we're looking for | |
493 | */ | |
494 | struct vio_dev *vio_find_node(struct device_node *vnode) | |
495 | { | |
496 | uint32_t *unit_address; | |
497 | char kobj_name[BUS_ID_SIZE]; | |
498 | ||
499 | /* construct the kobject name from the device node */ | |
500 | unit_address = (uint32_t *)get_property(vnode, "reg", NULL); | |
501 | if (!unit_address) | |
502 | return NULL; | |
503 | snprintf(kobj_name, BUS_ID_SIZE, "%x", *unit_address); | |
504 | ||
505 | return vio_find_name(kobj_name); | |
506 | } | |
507 | EXPORT_SYMBOL(vio_find_node); | |
508 | ||
509 | int vio_enable_interrupts(struct vio_dev *dev) | |
510 | { | |
511 | int rc = h_vio_signal(dev->unit_address, VIO_IRQ_ENABLE); | |
512 | if (rc != H_SUCCESS) | |
513 | printk(KERN_ERR "vio: Error 0x%x enabling interrupts\n", rc); | |
514 | return rc; | |
515 | } | |
516 | EXPORT_SYMBOL(vio_enable_interrupts); | |
517 | ||
518 | int vio_disable_interrupts(struct vio_dev *dev) | |
519 | { | |
520 | int rc = h_vio_signal(dev->unit_address, VIO_IRQ_DISABLE); | |
521 | if (rc != H_SUCCESS) | |
522 | printk(KERN_ERR "vio: Error 0x%x disabling interrupts\n", rc); | |
523 | return rc; | |
524 | } | |
525 | EXPORT_SYMBOL(vio_disable_interrupts); | |
526 | #endif /* CONFIG_PPC_PSERIES */ |