/*
* 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/object.h>
#include <core/client.h>
#include <core/engine.h>
struct nvkm_object *
nvkm_object_search(struct nvkm_client *client, u64 handle,
const struct nvkm_object_func *func)
{
struct nvkm_object *object;
unsigned long flags;
if (handle) {
spin_lock_irqsave(&client->obj_lock, flags);
struct rb_node *node = client->objroot.rb_node;
while (node) {
object = rb_entry(node, typeof(*object), node);
if (handle < object->object)
node = node->rb_left;
else
if (handle > object->object)
node = node->rb_right;
else {
spin_unlock_irqrestore(&client->obj_lock, flags);
goto done;
}
}
spin_unlock_irqrestore(&client->obj_lock, flags);
return ERR_PTR(-ENOENT);
} else {
object = &client->object;
}
done:
if (unlikely(func && object->func != func))
return ERR_PTR(-EINVAL);
return object;
}
void
nvkm_object_remove(struct nvkm_object *object)
{
unsigned long flags;
spin_lock_irqsave(&object->client->obj_lock, flags);
if (!RB_EMPTY_NODE(&object->node))
rb_erase(&object->node, &object->client->objroot);
spin_unlock_irqrestore(&object->client->obj_lock, flags);
}
bool
nvkm_object_insert(struct nvkm_object *object)
{
struct rb_node **ptr;
struct rb_node *parent = NULL;
unsigned long flags;
spin_lock_irqsave(&object->client->obj_lock, flags);
ptr = &object->client->objroot.rb_node;
while (*ptr) {
struct nvkm_object *this = rb_entry(*ptr, typeof(*this), node);
parent = *ptr;
if (object->object < this->object) {
ptr = &parent->rb_left;
} else if (object->object > this->object) {
ptr = &parent->rb_right;
} else {
spin_unlock_irqrestore(&object->client->obj_lock, flags);
return false;
}
}
rb_link_node(&object->node, parent, ptr);
rb_insert_color(&object->node, &object->client->objroot);
spin_unlock_irqrestore(&object->client->obj_lock, flags);
return true;
}
int
nvkm_object_mthd(struct nvkm_object *object, u32 mthd, void *data, u32 size)
{
if (likely(object->func->mthd))
return object->func->mthd(object, mthd, data, size);
return -ENODEV;
}
int
nvkm_object_ntfy(struct nvkm_object *object, u32 mthd,
struct nvkm_event **pevent)
{
if (likely(object->func->ntfy))
return object->func->ntfy(object, mthd, pevent);
return -ENODEV;
}
int
nvkm_object_map(struct nvkm_object *object, void *argv, u32 argc,
enum nvkm_object_map *type, u64 *addr, u64 *size)
{
if (likely(object->func->map))
return object->func->map(object, argv, argc, type, addr, size);
return -ENODEV;
}
int
nvkm_object_unmap(struct nvkm_object *object)
{
if (likely(object->func->unmap))
return object->func->unmap(object);
return -ENODEV;
}
int
nvkm_object_bind(struct nvkm_object *object, struct nvkm_gpuobj *gpuobj,
int align, struct nvkm_gpuobj **pgpuobj)
{
if (object->func->bind)
return object->func->bind(object, gpuobj, align, pgpuobj);
return -ENODEV;
}
int
nvkm_object_fini(struct nvkm_object *object, bool suspend)
{
const char *action = suspend ? "suspend" : "fini";
struct nvkm_object *child;
s64 time;
int ret;
nvif_debug(object, "%s children...\n", action);
time = ktime_to_us(ktime_get());
list_for_each_entry_reverse(child, &object->tree, head) {
ret = nvkm_object_fini(child, suspend);
if (ret && suspend)
goto fail_child;
}
nvif_debug(object, "%s running...\n", action);
if (object->func->fini) {
ret = object->func->fini(object, suspend);
if (ret) {
nvif_error(object, "%s failed with %d\n", action, ret);
if (suspend)
goto fail;
}
}
time = ktime_to_us(ktime_get()) - time;
nvif_debug(object, "%s completed in %lldus\n", action, time);
return 0;
fail:
if (object->func->init) {
int rret = object->func->init(object);
if (rret)
nvif_fatal(object, "failed to restart, %d\n", rret);
}
fail_child:
list_for_each_entry_continue_reverse(child, &object->tree, head) {
nvkm_object_init(child);
}
return ret;
}
int
nvkm_object_init(struct nvkm_object *object)
{
struct nvkm_object *child;
s64 time;
int ret;
nvif_debug(object, "init running...\n");
time = ktime_to_us(ktime_get());
if (object->func->init) {
ret = object->func->init(object);
if (ret)
goto fail;
}
nvif_debug(object, "init children...\n");
list_for_each_entry(child, &object->tree, head) {
ret = nvkm_object_init(child);
if (ret)
goto fail_child;
}
time = ktime_to_us(ktime_get()) - time;
nvif_debug(object, "init completed in %lldus\n", time);
return 0;
fail_child:
list_for_each_entry_continue_reverse(child, &object->tree, head)
nvkm_object_fini(child, false);
fail:
nvif_error(object, "init failed with %d\n", ret);
if (object->func->fini)
object->func->fini(object, false);
return ret;
}
void *
nvkm_object_dtor(struct nvkm_object *object)
{
struct nvkm_object *child, *ctemp;
void *data = object;
s64 time;
nvif_debug(object, "destroy children...\n");
time = ktime_to_us(ktime_get());
list_for_each_entry_safe(child, ctemp, &object->tree, head) {
nvkm_object_del(&child);
}
nvif_debug(object, "destroy running...\n");
nvkm_object_unmap(object);
if (object->func->dtor)
data = object->func->dtor(object);
nvkm_engine_unref(&object->engine);
time = ktime_to_us(ktime_get()) - time;
nvif_debug(object, "destroy completed in %lldus...\n", time);
return data;
}
void
nvkm_object_del(struct nvkm_object **pobject)
{
struct nvkm_object *object = *pobject;
if (object && !WARN_ON(!object->func)) {
*pobject = nvkm_object_dtor(object);
nvkm_object_remove(object);
list_del(&object->head);
kfree(*pobject);
*pobject = NULL;
}
}
void
nvkm_object_ctor(const struct nvkm_object_func *func,
const struct nvkm_oclass *oclass, struct nvkm_object *object)
{
object->func = func;
object->client = oclass->client;
object->engine = nvkm_engine_ref(oclass->engine);
object->oclass = oclass->base.oclass;
object->handle = oclass->handle;
object->object = oclass->object;
INIT_LIST_HEAD(&object->head);
INIT_LIST_HEAD(&object->tree);
RB_CLEAR_NODE(&object->node);
WARN_ON(IS_ERR(object->engine));
}
int
nvkm_object_new_(const struct nvkm_object_func *func,
const struct nvkm_oclass *oclass, void *data, u32 size,
struct nvkm_object **pobject)
{
if (size == 0) {
if (!(*pobject = kzalloc(sizeof(**pobject), GFP_KERNEL)))
return -ENOMEM;
nvkm_object_ctor(func, oclass, *pobject);
return 0;
}
return -ENOSYS;
}
static const struct nvkm_object_func
nvkm_object_func = {
};
int
nvkm_object_new(const struct nvkm_oclass *oclass, void *data, u32 size,
struct nvkm_object **pobject)
{
const struct nvkm_object_func *func =
oclass->base.func ? oclass->base.func : &nvkm_object_func;
return nvkm_object_new_(func, oclass, data, size, pobject);
}
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