drivers/gpu/drm/nouveau/core/engine/dmaobj/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/client.h>
  26 #include <core/device.h>
  27 #include <core/gpuobj.h>
  28 #include <core/class.h>
  29 #include <nvif/unpack.h>
  30 #include <nvif/class.h>
  31
  32 #include <subdev/fb.h>
  33
  34 #include "priv.h"
  35
  36 struct nvc0_dmaobj_priv {
  37         struct nouveau_dmaobj base;
  38         u32 flags0;
  39         u32 flags5;
  40 };
  41
  42 static int
  43 nvc0_dmaobj_bind(struct nouveau_dmaobj *dmaobj,
  44                  struct nouveau_object *parent,
  45                  struct nouveau_gpuobj **pgpuobj)
  46 {
  47         struct nvc0_dmaobj_priv *priv = (void *)dmaobj;
  48         int ret;
  49
  50         if (!nv_iclass(parent, NV_ENGCTX_CLASS)) {
  51                 switch (nv_mclass(parent->parent)) {
  52                 case NVA3_DISP_MAST_CLASS:
  53                 case NVA3_DISP_SYNC_CLASS:
  54                 case NVA3_DISP_OVLY_CLASS:
  55                         break;
  56                 default:
  57                         return -EINVAL;
  58                 }
  59         } else
  60                 return 0;
  61
  62         ret = nouveau_gpuobj_new(parent, parent, 24, 32, 0, pgpuobj);
  63         if (ret == 0) {
  64                 nv_wo32(*pgpuobj, 0x00, priv->flags0 | nv_mclass(dmaobj));
  65                 nv_wo32(*pgpuobj, 0x04, lower_32_bits(priv->base.limit));
  66                 nv_wo32(*pgpuobj, 0x08, lower_32_bits(priv->base.start));
  67                 nv_wo32(*pgpuobj, 0x0c, upper_32_bits(priv->base.limit) << 24 |
  68                                         upper_32_bits(priv->base.start));
  69                 nv_wo32(*pgpuobj, 0x10, 0x00000000);
  70                 nv_wo32(*pgpuobj, 0x14, priv->flags5);
  71         }
  72
  73         return ret;
  74 }
  75
  76 static int
  77 nvc0_dmaobj_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
  78                  struct nouveau_oclass *oclass, void *data, u32 size,
  79                  struct nouveau_object **pobject)
  80 {
  81         struct nouveau_dmaeng *dmaeng = (void *)engine;
  82         union {
  83                 struct gf100_dma_v0 v0;
  84         } *args;
  85         struct nvc0_dmaobj_priv *priv;
  86         u32 kind, user, unkn;
  87         int ret;
  88
  89         ret = nvkm_dmaobj_create(parent, engine, oclass, &data, &size, &priv);
  90         *pobject = nv_object(priv);
  91         if (ret)
  92                 return ret;
  93         args = data;
  94
  95         nv_ioctl(parent, "create gf100 dma size %d\n", size);
  96         if (nvif_unpack(args->v0, 0, 0, false)) {
  97                 nv_ioctl(parent, "create gf100 dma vers %d priv %d kind %02x\n",
  98                          args->v0.version, args->v0.priv, args->v0.kind);
  99                 kind = args->v0.kind;
 100                 user = args->v0.priv;
 101                 unkn = 0;
 102         } else
 103         if (size == 0) {
 104                 if (priv->base.target != NV_MEM_TARGET_VM) {
 105                         kind = GF100_DMA_V0_KIND_PITCH;
 106                         user = GF100_DMA_V0_PRIV_US;
 107                         unkn = 2;
 108                 } else {
 109                         kind = GF100_DMA_V0_KIND_VM;
 110                         user = GF100_DMA_V0_PRIV_VM;
 111                         unkn = 0;
 112                 }
 113         } else
 114                 return ret;
 115
 116         if (user > 2)
 117                 return -EINVAL;
 118         priv->flags0 |= (kind << 22) | (user << 20);
 119         priv->flags5 |= (unkn << 16);
 120
 121         switch (priv->base.target) {
 122         case NV_MEM_TARGET_VM:
 123                 priv->flags0 |= 0x00000000;
 124                 break;
 125         case NV_MEM_TARGET_VRAM:
 126                 priv->flags0 |= 0x00010000;
 127                 break;
 128         case NV_MEM_TARGET_PCI:
 129                 priv->flags0 |= 0x00020000;
 130                 break;
 131         case NV_MEM_TARGET_PCI_NOSNOOP:
 132                 priv->flags0 |= 0x00030000;
 133                 break;
 134         default:
 135                 return -EINVAL;
 136         }
 137
 138         switch (priv->base.access) {
 139         case NV_MEM_ACCESS_VM:
 140                 break;
 141         case NV_MEM_ACCESS_RO:
 142                 priv->flags0 |= 0x00040000;
 143                 break;
 144         case NV_MEM_ACCESS_WO:
 145         case NV_MEM_ACCESS_RW:
 146                 priv->flags0 |= 0x00080000;
 147                 break;
 148         }
 149
 150         return dmaeng->bind(&priv->base, nv_object(priv), (void *)pobject);
 151 }
 152
 153 static struct nouveau_ofuncs
 154 nvc0_dmaobj_ofuncs = {
 155         .ctor =  nvc0_dmaobj_ctor,
 156         .dtor = _nvkm_dmaobj_dtor,
 157         .init = _nvkm_dmaobj_init,
 158         .fini = _nvkm_dmaobj_fini,
 159 };
 160
 161 static struct nouveau_oclass
 162 nvc0_dmaeng_sclass[] = {
 163         { NV_DMA_FROM_MEMORY, &nvc0_dmaobj_ofuncs },
 164         { NV_DMA_TO_MEMORY, &nvc0_dmaobj_ofuncs },
 165         { NV_DMA_IN_MEMORY, &nvc0_dmaobj_ofuncs },
 166         {}
 167 };
 168
 169 struct nouveau_oclass *
 170 nvc0_dmaeng_oclass = &(struct nvkm_dmaeng_impl) {
 171         .base.handle = NV_ENGINE(DMAOBJ, 0xc0),
 172         .base.ofuncs = &(struct nouveau_ofuncs) {
 173                 .ctor = _nvkm_dmaeng_ctor,
 174                 .dtor = _nvkm_dmaeng_dtor,
 175                 .init = _nvkm_dmaeng_init,
 176                 .fini = _nvkm_dmaeng_fini,
 177         },
 178         .sclass = nvc0_dmaeng_sclass,
 179         .bind = nvc0_dmaobj_bind,
 180 }.base;