drivers/gpu/drm/nouveau/nvkm/engine/disp/rootnv04.c

   1 /*
   2  * Copyright 2012 Red Hat Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Authors: Ben Skeggs
  23  */
  24 #define nv04_disp_root(p) container_of((p), struct nv04_disp_root, object)
  25 #include "priv.h"
  26 #include "head.h"
  27
  28 #include <core/client.h>
  29
  30 #include <nvif/class.h>
  31 #include <nvif/cl0046.h>
  32 #include <nvif/unpack.h>
  33
  34 struct nv04_disp_root {
  35         struct nvkm_object object;
  36         struct nvkm_disp *disp;
  37 };
  38
  39 static int
  40 nv04_disp_mthd(struct nvkm_object *object, u32 mthd, void *data, u32 size)
  41 {
  42         struct nv04_disp_root *root = nv04_disp_root(object);
  43         union {
  44                 struct nv04_disp_mthd_v0 v0;
  45         } *args = data;
  46         struct nvkm_head *head;
  47         int id, ret = -ENOSYS;
  48
  49         nvif_ioctl(object, "disp mthd size %d\n", size);
  50         if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, true))) {
  51                 nvif_ioctl(object, "disp mthd vers %d mthd %02x head %d\n",
  52                            args->v0.version, args->v0.method, args->v0.head);
  53                 mthd = args->v0.method;
  54                 id   = args->v0.head;
  55         } else
  56                 return ret;
  57
  58         if (!(head = nvkm_head_find(root->disp, id)))
  59                 return -ENXIO;
  60
  61         switch (mthd) {
  62         case NV04_DISP_SCANOUTPOS:
  63                 return nvkm_head_mthd_scanoutpos(object, head, data, size);
  64         default:
  65                 break;
  66         }
  67
  68         return -EINVAL;
  69 }
  70
  71 static const struct nvkm_object_func
  72 nv04_disp_root = {
  73         .mthd = nv04_disp_mthd,
  74         .ntfy = nvkm_disp_ntfy,
  75 };
  76
  77 static int
  78 nv04_disp_root_new(struct nvkm_disp *disp, const struct nvkm_oclass *oclass,
  79                    void *data, u32 size, struct nvkm_object **pobject)
  80 {
  81         struct nv04_disp_root *root;
  82
  83         if (!(root = kzalloc(sizeof(*root), GFP_KERNEL)))
  84                 return -ENOMEM;
  85         root->disp = disp;
  86         *pobject = &root->object;
  87
  88         nvkm_object_ctor(&nv04_disp_root, oclass, &root->object);
  89         return 0;
  90 }
  91
  92 const struct nvkm_disp_oclass
  93 nv04_disp_root_oclass = {
  94         .base.oclass = NV04_DISP,
  95         .base.minver = -1,
  96         .base.maxver = -1,
  97         .ctor = nv04_disp_root_new,
  98 };