diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/core/core/event.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/core/core/event.c | 176 |
1 files changed, 40 insertions, 136 deletions
diff --git a/drivers/gpu/drm/nouveau/core/core/event.c b/drivers/gpu/drm/nouveau/core/core/event.c index ae81d3b5d8b7..0540a48c5678 100644 --- a/drivers/gpu/drm/nouveau/core/core/event.c +++ b/drivers/gpu/drm/nouveau/core/core/event.c @@ -1,5 +1,5 @@ /* - * Copyright 2013 Red Hat Inc. + * Copyright 2013-2014 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"), @@ -24,173 +24,77 @@ #include <core/event.h> void -nouveau_event_put(struct nouveau_eventh *handler) +nvkm_event_put(struct nvkm_event *event, u32 types, int index) { - struct nouveau_event *event = handler->event; - unsigned long flags; - u32 m, t; - - if (!__test_and_clear_bit(NVKM_EVENT_ENABLE, &handler->flags)) - return; - - spin_lock_irqsave(&event->refs_lock, flags); - for (m = handler->types; t = __ffs(m), m; m &= ~(1 << t)) { - if (!--event->refs[handler->index * event->types_nr + t]) { - if (event->disable) - event->disable(event, 1 << t, handler->index); + BUG_ON(!spin_is_locked(&event->refs_lock)); + while (types) { + int type = __ffs(types); types &= ~(1 << type); + if (--event->refs[index * event->types_nr + type] == 0) { + if (event->func->fini) + event->func->fini(event, 1 << type, index); } - } - spin_unlock_irqrestore(&event->refs_lock, flags); } void -nouveau_event_get(struct nouveau_eventh *handler) +nvkm_event_get(struct nvkm_event *event, u32 types, int index) { - struct nouveau_event *event = handler->event; - unsigned long flags; - u32 m, t; - - if (__test_and_set_bit(NVKM_EVENT_ENABLE, &handler->flags)) - return; - - spin_lock_irqsave(&event->refs_lock, flags); - for (m = handler->types; t = __ffs(m), m; m &= ~(1 << t)) { - if (!event->refs[handler->index * event->types_nr + t]++) { - if (event->enable) - event->enable(event, 1 << t, handler->index); + BUG_ON(!spin_is_locked(&event->refs_lock)); + while (types) { + int type = __ffs(types); types &= ~(1 << type); + if (++event->refs[index * event->types_nr + type] == 1) { + if (event->func->init) + event->func->init(event, 1 << type, index); } - } - spin_unlock_irqrestore(&event->refs_lock, flags); -} - -static void -nouveau_event_fini(struct nouveau_eventh *handler) -{ - struct nouveau_event *event = handler->event; - unsigned long flags; - nouveau_event_put(handler); - spin_lock_irqsave(&event->list_lock, flags); - list_del(&handler->head); - spin_unlock_irqrestore(&event->list_lock, flags); -} - -static int -nouveau_event_init(struct nouveau_event *event, u32 types, int index, - int (*func)(void *, u32, int), void *priv, - struct nouveau_eventh *handler) -{ - unsigned long flags; - - if (types & ~((1 << event->types_nr) - 1)) - return -EINVAL; - if (index >= event->index_nr) - return -EINVAL; - - handler->event = event; - handler->flags = 0; - handler->types = types; - handler->index = index; - handler->func = func; - handler->priv = priv; - - spin_lock_irqsave(&event->list_lock, flags); - list_add_tail(&handler->head, &event->list[index]); - spin_unlock_irqrestore(&event->list_lock, flags); - return 0; -} - -int -nouveau_event_new(struct nouveau_event *event, u32 types, int index, - int (*func)(void *, u32, int), void *priv, - struct nouveau_eventh **phandler) -{ - struct nouveau_eventh *handler; - int ret = -ENOMEM; - - if (event->check) { - ret = event->check(event, types, index); - if (ret) - return ret; - } - - handler = *phandler = kmalloc(sizeof(*handler), GFP_KERNEL); - if (handler) { - ret = nouveau_event_init(event, types, index, func, priv, handler); - if (ret) - kfree(handler); - } - - return ret; -} - -void -nouveau_event_ref(struct nouveau_eventh *handler, struct nouveau_eventh **ref) -{ - BUG_ON(handler != NULL); - if (*ref) { - nouveau_event_fini(*ref); - kfree(*ref); - } - *ref = handler; } void -nouveau_event_trigger(struct nouveau_event *event, u32 types, int index) +nvkm_event_send(struct nvkm_event *event, u32 types, int index, + void *data, u32 size) { - struct nouveau_eventh *handler; + struct nvkm_notify *notify; unsigned long flags; - if (WARN_ON(index >= event->index_nr)) + if (!event->refs || WARN_ON(index >= event->index_nr)) return; spin_lock_irqsave(&event->list_lock, flags); - list_for_each_entry(handler, &event->list[index], head) { - if (!test_bit(NVKM_EVENT_ENABLE, &handler->flags)) - continue; - if (!(handler->types & types)) - continue; - if (handler->func(handler->priv, handler->types & types, index) - != NVKM_EVENT_DROP) - continue; - nouveau_event_put(handler); + list_for_each_entry(notify, &event->list, head) { + if (notify->index == index && (notify->types & types)) { + if (event->func->send) { + event->func->send(data, size, notify); + continue; + } + nvkm_notify_send(notify, data, size); + } } spin_unlock_irqrestore(&event->list_lock, flags); } void -nouveau_event_destroy(struct nouveau_event **pevent) +nvkm_event_fini(struct nvkm_event *event) { - struct nouveau_event *event = *pevent; - if (event) { - kfree(event); - *pevent = NULL; + if (event->refs) { + kfree(event->refs); + event->refs = NULL; } } int -nouveau_event_create(int types_nr, int index_nr, struct nouveau_event **pevent) +nvkm_event_init(const struct nvkm_event_func *func, int types_nr, int index_nr, + struct nvkm_event *event) { - struct nouveau_event *event; - int i; - - event = *pevent = kzalloc(sizeof(*event) + (index_nr * types_nr) * - sizeof(event->refs[0]), GFP_KERNEL); - if (!event) - return -ENOMEM; - - event->list = kmalloc(sizeof(*event->list) * index_nr, GFP_KERNEL); - if (!event->list) { - kfree(event); + event->refs = kzalloc(sizeof(*event->refs) * index_nr * types_nr, + GFP_KERNEL); + if (!event->refs) return -ENOMEM; - } - spin_lock_init(&event->list_lock); - spin_lock_init(&event->refs_lock); - for (i = 0; i < index_nr; i++) - INIT_LIST_HEAD(&event->list[i]); + event->func = func; event->types_nr = types_nr; event->index_nr = index_nr; + spin_lock_init(&event->refs_lock); + spin_lock_init(&event->list_lock); + INIT_LIST_HEAD(&event->list); return 0; } |