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* Copyright 2012 Red Hat Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: Ben Skeggs
*/
#include <core/parent.h>
#include <core/client.h>
#include <core/engine.h>
int
nvkm_parent_sclass(struct nvkm_object *parent, u16 handle,
struct nvkm_object **pengine,
struct nvkm_oclass **poclass)
{
struct nvkm_sclass *sclass;
struct nvkm_engine *engine;
struct nvkm_oclass *oclass;
u64 mask;
sclass = nv_parent(parent)->sclass;
while (sclass) {
if ((sclass->oclass->handle & 0xffff) == handle) {
*pengine = &parent->engine->subdev.object;
*poclass = sclass->oclass;
return 0;
}
sclass = sclass->sclass;
}
mask = nv_parent(parent)->engine;
while (mask) {
int i = __ffs64(mask);
if (nv_iclass(parent, NV_CLIENT_CLASS))
engine = nv_engine(nv_client(parent)->device);
else
engine = nvkm_engine(parent, i);
if (engine) {
oclass = engine->sclass;
while (oclass->ofuncs) {
if ((oclass->handle & 0xffff) == handle) {
*pengine = nv_object(engine);
*poclass = oclass;
return 0;
}
oclass++;
}
}
mask &= ~(1ULL << i);
}
return -EINVAL;
}
int
nvkm_parent_lclass(struct nvkm_object *parent, u32 *lclass, int size)
{
struct nvkm_sclass *sclass;
struct nvkm_engine *engine;
struct nvkm_oclass *oclass;
int nr = -1, i;
u64 mask;
sclass = nv_parent(parent)->sclass;
while (sclass) {
if (++nr < size)
lclass[nr] = sclass->oclass->handle & 0xffff;
sclass = sclass->sclass;
}
mask = nv_parent(parent)->engine;
while (i = __ffs64(mask), mask) {
engine = nvkm_engine(parent, i);
if (engine && (oclass = engine->sclass)) {
while (oclass->ofuncs) {
if (++nr < size)
lclass[nr] = oclass->handle & 0xffff;
oclass++;
}
}
mask &= ~(1ULL << i);
}
return nr + 1;
}
int
nvkm_parent_create_(struct nvkm_object *parent, struct nvkm_object *engine,
struct nvkm_oclass *oclass, u32 pclass,
struct nvkm_oclass *sclass, u64 engcls,
int size, void **pobject)
{
struct nvkm_parent *object;
struct nvkm_sclass *nclass;
int ret;
ret = nvkm_object_create_(parent, engine, oclass, pclass |
NV_PARENT_CLASS, size, pobject);
object = *pobject;
if (ret)
return ret;
while (sclass && sclass->ofuncs) {
nclass = kzalloc(sizeof(*nclass), GFP_KERNEL);
if (!nclass)
return -ENOMEM;
nclass->sclass = object->sclass;
object->sclass = nclass;
nclass->engine = engine ? nv_engine(engine) : NULL;
nclass->oclass = sclass;
sclass++;
}
object->engine = engcls;
return 0;
}
void
nvkm_parent_destroy(struct nvkm_parent *parent)
{
struct nvkm_sclass *sclass;
while ((sclass = parent->sclass)) {
parent->sclass = sclass->sclass;
kfree(sclass);
}
nvkm_object_destroy(&parent->object);
}
void
_nvkm_parent_dtor(struct nvkm_object *object)
{
nvkm_parent_destroy(nv_parent(object));
}
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