LXR linux/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
  34struct nv04_disp_root {
  35        struct nvkm_object object;
  36        struct nvkm_disp *disp;
  37};
  38
  39static int
  40nv04_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
  71static const struct nvkm_object_func
  72nv04_disp_root = {
  73        .mthd = nv04_disp_mthd,
  74        .ntfy = nvkm_disp_ntfy,
  75};
  76
  77static int
  78nv04_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
  92const struct nvkm_disp_oclass
  93nv04_disp_root_oclass = {
  94        .base.oclass = NV04_DISP,
  95        .base.minver = -1,
  96        .base.maxver = -1,
  97        .ctor = nv04_disp_root_new,
  98};
  99