root/drivers/gpu/drm/nouveau/nvif/user.c
/*
 * Copyright 2018 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/user.h>
#include <nvif/device.h>

#include <nvif/class.h>

void
nvif_user_dtor(struct nvif_device *device)
{
        if (device->user.func) {
                nvif_object_dtor(&device->user.object);
                device->user.func = NULL;
        }
}

int
nvif_user_ctor(struct nvif_device *device, const char *name)
{
        struct {
                s32 oclass;
                int version;
                const struct nvif_user_func *func;
        } users[] = {
                { BLACKWELL_USERMODE_A, -1, &nvif_userc361 },
                {    HOPPER_USERMODE_A, -1, &nvif_userc361 },
                {    AMPERE_USERMODE_A, -1, &nvif_userc361 },
                {    TURING_USERMODE_A, -1, &nvif_userc361 },
                {     VOLTA_USERMODE_A, -1, &nvif_userc361 },
                {}
        };
        int cid, ret;

        if (device->user.func)
                return 0;

        cid = nvif_mclass(&device->object, users);
        if (cid < 0)
                return cid;

        ret = nvif_object_ctor(&device->object, name ? name : "nvifUsermode",
                               0, users[cid].oclass, NULL, 0,
                               &device->user.object);
        if (ret)
                return ret;

        nvif_object_map(&device->user.object, NULL, 0);
        device->user.func = users[cid].func;
        return 0;
}