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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/handle.h>
#include <core/client.h>
#define hprintk(h,l,f,a...) do { \
struct nvkm_client *c = nvkm_client((h)->object); \
struct nvkm_handle *p = (h)->parent; u32 n = p ? p->name : ~0; \
nv_printk((c), l, "0x%08x:0x%08x "f, n, (h)->name, ##a); \
} while(0)
int
nvkm_handle_init(struct nvkm_handle *handle)
{
struct nvkm_handle *item;
int ret;
hprintk(handle, TRACE, "init running\n");
ret = nvkm_object_inc(handle->object);
if (ret)
return ret;
hprintk(handle, TRACE, "init children\n");
list_for_each_entry(item, &handle->tree, head) {
ret = nvkm_handle_init(item);
if (ret)
goto fail;
}
hprintk(handle, TRACE, "init completed\n");
return 0;
fail:
hprintk(handle, ERROR, "init failed with %d\n", ret);
list_for_each_entry_continue_reverse(item, &handle->tree, head) {
nvkm_handle_fini(item, false);
}
nvkm_object_dec(handle->object, false);
return ret;
}
int
nvkm_handle_fini(struct nvkm_handle *handle, bool suspend)
{
static char *name[2] = { "fini", "suspend" };
struct nvkm_handle *item;
int ret;
hprintk(handle, TRACE, "%s children\n", name[suspend]);
list_for_each_entry(item, &handle->tree, head) {
ret = nvkm_handle_fini(item, suspend);
if (ret && suspend)
goto fail;
}
hprintk(handle, TRACE, "%s running\n", name[suspend]);
if (handle->object) {
ret = nvkm_object_dec(handle->object, suspend);
if (ret && suspend)
goto fail;
}
hprintk(handle, TRACE, "%s completed\n", name[suspend]);
return 0;
fail:
hprintk(handle, ERROR, "%s failed with %d\n", name[suspend], ret);
list_for_each_entry_continue_reverse(item, &handle->tree, head) {
int rret = nvkm_handle_init(item);
if (rret)
hprintk(handle, FATAL, "failed to restart, %d\n", rret);
}
return ret;
}
int
nvkm_handle_create(struct nvkm_object *parent, u32 _parent, u32 _handle,
struct nvkm_object *object, struct nvkm_handle **phandle)
{
struct nvkm_object *namedb;
struct nvkm_handle *handle;
int ret;
namedb = parent;
while (!nv_iclass(namedb, NV_NAMEDB_CLASS))
namedb = namedb->parent;
handle = kzalloc(sizeof(*handle), GFP_KERNEL);
if (!handle)
return -ENOMEM;
INIT_LIST_HEAD(&handle->head);
INIT_LIST_HEAD(&handle->tree);
handle->name = _handle;
handle->priv = ~0;
ret = nvkm_namedb_insert(nv_namedb(namedb), _handle, object, handle);
if (ret) {
kfree(handle);
return ret;
}
if (nv_parent(parent)->object_attach) {
ret = nv_parent(parent)->object_attach(parent, object, _handle);
if (ret < 0) {
nvkm_handle_destroy(handle);
return ret;
}
handle->priv = ret;
}
if (object != namedb) {
while (!nv_iclass(namedb, NV_CLIENT_CLASS))
namedb = namedb->parent;
handle->parent = nvkm_namedb_get(nv_namedb(namedb), _parent);
if (handle->parent) {
list_add(&handle->head, &handle->parent->tree);
nvkm_namedb_put(handle->parent);
}
}
hprintk(handle, TRACE, "created\n");
*phandle = handle;
return 0;
}
void
nvkm_handle_destroy(struct nvkm_handle *handle)
{
struct nvkm_handle *item, *temp;
hprintk(handle, TRACE, "destroy running\n");
list_for_each_entry_safe(item, temp, &handle->tree, head) {
nvkm_handle_destroy(item);
}
list_del(&handle->head);
if (handle->priv != ~0) {
struct nvkm_object *parent = handle->parent->object;
nv_parent(parent)->object_detach(parent, handle->priv);
}
hprintk(handle, TRACE, "destroy completed\n");
nvkm_namedb_remove(handle);
kfree(handle);
}
struct nvkm_object *
nvkm_handle_ref(struct nvkm_object *parent, u32 name)
{
struct nvkm_object *object = NULL;
struct nvkm_handle *handle;
while (!nv_iclass(parent, NV_NAMEDB_CLASS))
parent = parent->parent;
handle = nvkm_namedb_get(nv_namedb(parent), name);
if (handle) {
nvkm_object_ref(handle->object, &object);
nvkm_namedb_put(handle);
}
return object;
}
struct nvkm_handle *
nvkm_handle_get_class(struct nvkm_object *engctx, u16 oclass)
{
struct nvkm_namedb *namedb;
if (engctx && (namedb = (void *)nv_pclass(engctx, NV_NAMEDB_CLASS)))
return nvkm_namedb_get_class(namedb, oclass);
return NULL;
}
struct nvkm_handle *
nvkm_handle_get_vinst(struct nvkm_object *engctx, u64 vinst)
{
struct nvkm_namedb *namedb;
if (engctx && (namedb = (void *)nv_pclass(engctx, NV_NAMEDB_CLASS)))
return nvkm_namedb_get_vinst(namedb, vinst);
return NULL;
}
struct nvkm_handle *
nvkm_handle_get_cinst(struct nvkm_object *engctx, u32 cinst)
{
struct nvkm_namedb *namedb;
if (engctx && (namedb = (void *)nv_pclass(engctx, NV_NAMEDB_CLASS)))
return nvkm_namedb_get_cinst(namedb, cinst);
return NULL;
}
void
nvkm_handle_put(struct nvkm_handle *handle)
{
if (handle)
nvkm_namedb_put(handle);
}
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