drivers/gpu/drm/nouveau/nvif/event.c

/*
 * Copyright 2021 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.
 */
#include <nvif/event.h>
#include <nvif/printf.h>

#include <nvif/class.h>
#include <nvif/if000e.h>

int
nvif_event_block(struct nvif_event *event)
{
	if (nvif_event_constructed(event)) {
		int ret = nvif_mthd(&event->object, NVIF_EVENT_V0_BLOCK, NULL, 0);
		NVIF_ERRON(ret, &event->object, "[BLOCK]");
		return ret;
	}
	return 0;
}

int
nvif_event_allow(struct nvif_event *event)
{
	if (nvif_event_constructed(event)) {
		int ret = nvif_mthd(&event->object, NVIF_EVENT_V0_ALLOW, NULL, 0);
		NVIF_ERRON(ret, &event->object, "[ALLOW]");
		return ret;
	}
	return 0;
}

void
nvif_event_dtor(struct nvif_event *event)
{
	nvif_object_dtor(&event->object);
}

int
nvif_event_ctor_(struct nvif_object *parent, const char *name, u32 handle, nvif_event_func func,
		 bool wait, struct nvif_event_v0 *args, u32 argc, bool warn,
		 struct nvif_event *event)
{
	struct nvif_event_v0 _args;
	int ret;

	if (!args) {
		args = &_args;
		argc = sizeof(_args);
	}

	args->version = 0;
	args->wait = wait;

	ret = nvif_object_ctor(parent, name ?: "nvifEvent", handle,
			       NVIF_CLASS_EVENT, args, argc, &event->object);
	NVIF_ERRON(ret && warn, parent, "[NEW EVENT wait:%d size:%zd]",
		   args->wait, argc - sizeof(*args));
	if (ret)
		return ret;

	event->func = func;
	return 0;
}