diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/core/notify.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/core/notify.c | 163 |
1 files changed, 0 insertions, 163 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/core/notify.c b/drivers/gpu/drm/nouveau/nvkm/core/notify.c deleted file mode 100644 index 023610d01458..000000000000 --- a/drivers/gpu/drm/nouveau/nvkm/core/notify.c +++ /dev/null @@ -1,163 +0,0 @@ -/* - * Copyright 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"), - * 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 <bskeggs@redhat.com> - */ -#include <core/notify.h> -#include <core/event.h> - -static inline void -nvkm_notify_put_locked(struct nvkm_notify *notify) -{ - if (notify->block++ == 0) - nvkm_event_put(notify->event, notify->types, notify->index); -} - -void -nvkm_notify_put(struct nvkm_notify *notify) -{ - struct nvkm_event *event = notify->event; - unsigned long flags; - if (likely(event) && - test_and_clear_bit(NVKM_NOTIFY_USER, ¬ify->flags)) { - spin_lock_irqsave(&event->refs_lock, flags); - nvkm_notify_put_locked(notify); - spin_unlock_irqrestore(&event->refs_lock, flags); - if (test_bit(NVKM_NOTIFY_WORK, ¬ify->flags)) - flush_work(¬ify->work); - } -} - -static inline void -nvkm_notify_get_locked(struct nvkm_notify *notify) -{ - if (--notify->block == 0) - nvkm_event_get(notify->event, notify->types, notify->index); -} - -void -nvkm_notify_get(struct nvkm_notify *notify) -{ - struct nvkm_event *event = notify->event; - unsigned long flags; - if (likely(event) && - !test_and_set_bit(NVKM_NOTIFY_USER, ¬ify->flags)) { - spin_lock_irqsave(&event->refs_lock, flags); - nvkm_notify_get_locked(notify); - spin_unlock_irqrestore(&event->refs_lock, flags); - } -} - -static inline void -nvkm_notify_func(struct nvkm_notify *notify) -{ - struct nvkm_event *event = notify->event; - int ret = notify->func(notify); - unsigned long flags; - if ((ret == NVKM_NOTIFY_KEEP) || - !test_and_clear_bit(NVKM_NOTIFY_USER, ¬ify->flags)) { - spin_lock_irqsave(&event->refs_lock, flags); - nvkm_notify_get_locked(notify); - spin_unlock_irqrestore(&event->refs_lock, flags); - } -} - -static void -nvkm_notify_work(struct work_struct *work) -{ - struct nvkm_notify *notify = container_of(work, typeof(*notify), work); - nvkm_notify_func(notify); -} - -void -nvkm_notify_send(struct nvkm_notify *notify, void *data, u32 size) -{ - struct nvkm_event *event = notify->event; - unsigned long flags; - - assert_spin_locked(&event->list_lock); - BUG_ON(size != notify->size); - - spin_lock_irqsave(&event->refs_lock, flags); - if (notify->block) { - spin_unlock_irqrestore(&event->refs_lock, flags); - return; - } - nvkm_notify_put_locked(notify); - spin_unlock_irqrestore(&event->refs_lock, flags); - - if (test_bit(NVKM_NOTIFY_WORK, ¬ify->flags)) { - memcpy((void *)notify->data, data, size); - schedule_work(¬ify->work); - } else { - notify->data = data; - nvkm_notify_func(notify); - notify->data = NULL; - } -} - -void -nvkm_notify_fini(struct nvkm_notify *notify) -{ - unsigned long flags; - if (notify->event) { - nvkm_notify_put(notify); - spin_lock_irqsave(¬ify->event->list_lock, flags); - list_del(¬ify->head); - spin_unlock_irqrestore(¬ify->event->list_lock, flags); - kfree((void *)notify->data); - notify->event = NULL; - } -} - -int -nvkm_notify_init(struct nvkm_object *object, struct nvkm_event *event, - int (*func)(struct nvkm_notify *), bool work, - void *data, u32 size, u32 reply, - struct nvkm_notify *notify) -{ - unsigned long flags; - int ret = -ENODEV; - if ((notify->event = event), event->refs) { - ret = event->func->ctor(object, data, size, notify); - if (ret == 0 && (ret = -EINVAL, notify->size == reply)) { - notify->flags = 0; - notify->block = 1; - notify->func = func; - notify->data = NULL; - if (ret = 0, work) { - INIT_WORK(¬ify->work, nvkm_notify_work); - set_bit(NVKM_NOTIFY_WORK, ¬ify->flags); - notify->data = kmalloc(reply, GFP_KERNEL); - if (!notify->data) - ret = -ENOMEM; - } - } - if (ret == 0) { - spin_lock_irqsave(&event->list_lock, flags); - list_add_tail(¬ify->head, &event->list); - spin_unlock_irqrestore(&event->list_lock, flags); - } - } - if (ret) - notify->event = NULL; - return ret; -} |