drivers/gpu/drm/nouveau/core/engine/software/nvc0.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
  25 #include <core/os.h>
  26 #include <core/class.h>
  27 #include <core/engctx.h>
  28
  29 #include <engine/software.h>
  30 #include <engine/disp.h>
  31
  32 struct nvc0_software_priv {
  33         struct nouveau_software base;
  34 };
  35
  36 struct nvc0_software_chan {
  37         struct nouveau_software_chan base;
  38 };
  39
  40 /*******************************************************************************
  41  * software object classes
  42  ******************************************************************************/
  43
  44 static int
  45 nvc0_software_mthd_vblsem_offset(struct nouveau_object *object, u32 mthd,
  46                                  void *args, u32 size)
  47 {
  48         struct nvc0_software_chan *chan = (void *)nv_engctx(object->parent);
  49         u64 data = *(u32 *)args;
  50         if (mthd == 0x0400) {
  51                 chan->base.vblank.offset &= 0x00ffffffffULL;
  52                 chan->base.vblank.offset |= data << 32;
  53         } else {
  54                 chan->base.vblank.offset &= 0xff00000000ULL;
  55                 chan->base.vblank.offset |= data;
  56         }
  57         return 0;
  58 }
  59
  60 static int
  61 nvc0_software_mthd_vblsem_value(struct nouveau_object *object, u32 mthd,
  62                                 void *args, u32 size)
  63 {
  64         struct nvc0_software_chan *chan = (void *)nv_engctx(object->parent);
  65         chan->base.vblank.value = *(u32 *)args;
  66         return 0;
  67 }
  68
  69 static int
  70 nvc0_software_mthd_vblsem_release(struct nouveau_object *object, u32 mthd,
  71                                   void *args, u32 size)
  72 {
  73         struct nvc0_software_chan *chan = (void *)nv_engctx(object->parent);
  74         struct nouveau_disp *disp = nouveau_disp(object);
  75         unsigned long flags;
  76         u32 crtc = *(u32 *)args;
  77
  78         if ((nv_device(object)->card_type < NV_E0 && crtc > 1) || crtc > 3)
  79                 return -EINVAL;
  80
  81         disp->vblank.get(disp->vblank.data, crtc);
  82
  83         spin_lock_irqsave(&disp->vblank.lock, flags);
  84         list_add(&chan->base.vblank.head, &disp->vblank.list);
  85         chan->base.vblank.crtc = crtc;
  86         spin_unlock_irqrestore(&disp->vblank.lock, flags);
  87         return 0;
  88 }
  89
  90 static int
  91 nvc0_software_mthd_flip(struct nouveau_object *object, u32 mthd,
  92                         void *args, u32 size)
  93 {
  94         struct nvc0_software_chan *chan = (void *)nv_engctx(object->parent);
  95         if (chan->base.flip)
  96                 return chan->base.flip(chan->base.flip_data);
  97         return -EINVAL;
  98 }
  99
 100 static struct nouveau_omthds
 101 nvc0_software_omthds[] = {
 102         { 0x0400, nvc0_software_mthd_vblsem_offset },
 103         { 0x0404, nvc0_software_mthd_vblsem_offset },
 104         { 0x0408, nvc0_software_mthd_vblsem_value },
 105         { 0x040c, nvc0_software_mthd_vblsem_release },
 106         { 0x0500, nvc0_software_mthd_flip },
 107         {}
 108 };
 109
 110 static struct nouveau_oclass
 111 nvc0_software_sclass[] = {
 112         { 0x906e, &nouveau_object_ofuncs, nvc0_software_omthds },
 113         {}
 114 };
 115
 116 /*******************************************************************************
 117  * software context
 118  ******************************************************************************/
 119
 120 static int
 121 nvc0_software_context_ctor(struct nouveau_object *parent,
 122                            struct nouveau_object *engine,
 123                            struct nouveau_oclass *oclass, void *data, u32 size,
 124                            struct nouveau_object **pobject)
 125 {
 126         struct nvc0_software_chan *chan;
 127         int ret;
 128
 129         ret = nouveau_software_context_create(parent, engine, oclass, &chan);
 130         *pobject = nv_object(chan);
 131         if (ret)
 132                 return ret;
 133
 134         chan->base.vblank.channel = nv_gpuobj(parent->parent)->addr >> 12;
 135         return 0;
 136 }
 137
 138 static struct nouveau_oclass
 139 nvc0_software_cclass = {
 140         .handle = NV_ENGCTX(SW, 0xc0),
 141         .ofuncs = &(struct nouveau_ofuncs) {
 142                 .ctor = nvc0_software_context_ctor,
 143                 .dtor = _nouveau_software_context_dtor,
 144                 .init = _nouveau_software_context_init,
 145                 .fini = _nouveau_software_context_fini,
 146         },
 147 };
 148
 149 /*******************************************************************************
 150  * software engine/subdev functions
 151  ******************************************************************************/
 152
 153 static int
 154 nvc0_software_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
 155                    struct nouveau_oclass *oclass, void *data, u32 size,
 156                    struct nouveau_object **pobject)
 157 {
 158         struct nvc0_software_priv *priv;
 159         int ret;
 160
 161         ret = nouveau_software_create(parent, engine, oclass, &priv);
 162         *pobject = nv_object(priv);
 163         if (ret)
 164                 return ret;
 165
 166         nv_engine(priv)->cclass = &nvc0_software_cclass;
 167         nv_engine(priv)->sclass = nvc0_software_sclass;
 168         return 0;
 169 }
 170
 171 struct nouveau_oclass
 172 nvc0_software_oclass = {
 173         .handle = NV_ENGINE(SW, 0xc0),
 174         .ofuncs = &(struct nouveau_ofuncs) {
 175                 .ctor = nvc0_software_ctor,
 176                 .dtor = _nouveau_software_dtor,
 177                 .init = _nouveau_software_init,
 178                 .fini = _nouveau_software_fini,
 179         },
 180 };