nouveau/nvif/user.c

0001 /*
0002  * Copyright 2018 Red Hat Inc.
0003  *
0004  * Permission is hereby granted, free of charge, to any person obtaining a
0005  * copy of this software and associated documentation files (the "Software"),
0006  * to deal in the Software without restriction, including without limitation
0007  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
0008  * and/or sell copies of the Software, and to permit persons to whom the
0009  * Software is furnished to do so, subject to the following conditions:
0010  *
0011  * The above copyright notice and this permission notice shall be included in
0012  * all copies or substantial portions of the Software.
0013  *
0014  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
0015  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
0016  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
0017  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
0018  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
0019  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
0020  * OTHER DEALINGS IN THE SOFTWARE.
0021  */
0022 #include <nvif/user.h>
0023 #include <nvif/device.h>
0024
0025 #include <nvif/class.h>
0026
0027 void
0028 nvif_user_dtor(struct nvif_device *device)
0029 {
0030     if (device->user.func) {
0031         nvif_object_dtor(&device->user.object);
0032         device->user.func = NULL;
0033     }
0034 }
0035
0036 int
0037 nvif_user_ctor(struct nvif_device *device, const char *name)
0038 {
0039     struct {
0040         s32 oclass;
0041         int version;
0042         const struct nvif_user_func *func;
0043     } users[] = {
0044         { VOLTA_USERMODE_A, -1, &nvif_userc361 },
0045         {}
0046     };
0047     int cid, ret;
0048
0049     if (device->user.func)
0050         return 0;
0051
0052     cid = nvif_mclass(&device->object, users);
0053     if (cid < 0)
0054         return cid;
0055
0056     ret = nvif_object_ctor(&device->object, name ? name : "nvifUsermode",
0057                    0, users[cid].oclass, NULL, 0,
0058                    &device->user.object);
0059     if (ret)
0060         return ret;
0061
0062     nvif_object_map(&device->user.object, NULL, 0);
0063     device->user.func = users[cid].func;
0064     return 0;
0065 }