/*
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* Copyright 2013-2014 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <core/event.h>
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#include <core/notify.h>
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void
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nvkm_event_put(struct nvkm_event *event, u32 types, int index)
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{
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assert_spin_locked(&event->refs_lock);
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while (types) {
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int type = __ffs(types); types &= ~(1 << type);
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if (--event->refs[index * event->types_nr + type] == 0) {
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if (event->func->fini)
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event->func->fini(event, 1 << type, index);
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}
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}
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}
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void
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nvkm_event_get(struct nvkm_event *event, u32 types, int index)
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{
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assert_spin_locked(&event->refs_lock);
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while (types) {
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int type = __ffs(types); types &= ~(1 << type);
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if (++event->refs[index * event->types_nr + type] == 1) {
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if (event->func->init)
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event->func->init(event, 1 << type, index);
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}
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}
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}
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void
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nvkm_event_send(struct nvkm_event *event, u32 types, int index,
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void *data, u32 size)
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{
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struct nvkm_notify *notify;
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unsigned long flags;
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if (!event->refs || WARN_ON(index >= event->index_nr))
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return;
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spin_lock_irqsave(&event->list_lock, flags);
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list_for_each_entry(notify, &event->list, head) {
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if (notify->index == index && (notify->types & types)) {
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if (event->func->send) {
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event->func->send(data, size, notify);
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continue;
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}
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nvkm_notify_send(notify, data, size);
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}
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}
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spin_unlock_irqrestore(&event->list_lock, flags);
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}
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void
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nvkm_event_fini(struct nvkm_event *event)
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{
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if (event->refs) {
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kfree(event->refs);
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event->refs = NULL;
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}
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}
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int
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nvkm_event_init(const struct nvkm_event_func *func, int types_nr, int index_nr,
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struct nvkm_event *event)
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{
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event->refs = kzalloc(array3_size(index_nr, types_nr,
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sizeof(*event->refs)),
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GFP_KERNEL);
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if (!event->refs)
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return -ENOMEM;
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event->func = func;
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event->types_nr = types_nr;
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event->index_nr = index_nr;
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spin_lock_init(&event->refs_lock);
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spin_lock_init(&event->list_lock);
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INIT_LIST_HEAD(&event->list);
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return 0;
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}
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