kernel/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv04.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 #include "nv04.h"
  25
  26 #include <core/ramht.h>
  27
  28 /******************************************************************************
  29  * instmem object implementation
  30  *****************************************************************************/
  31
  32 static u32
  33 nv04_instobj_rd32(struct nvkm_object *object, u64 addr)
  34 {
  35         struct nv04_instmem_priv *priv = (void *)nvkm_instmem(object);
  36         struct nv04_instobj_priv *node = (void *)object;
  37         return nv_ro32(priv, node->mem->offset + addr);
  38 }
  39
  40 static void
  41 nv04_instobj_wr32(struct nvkm_object *object, u64 addr, u32 data)
  42 {
  43         struct nv04_instmem_priv *priv = (void *)nvkm_instmem(object);
  44         struct nv04_instobj_priv *node = (void *)object;
  45         nv_wo32(priv, node->mem->offset + addr, data);
  46 }
  47
  48 static void
  49 nv04_instobj_dtor(struct nvkm_object *object)
  50 {
  51         struct nv04_instmem_priv *priv = (void *)nvkm_instmem(object);
  52         struct nv04_instobj_priv *node = (void *)object;
  53         nvkm_mm_free(&priv->heap, &node->mem);
  54         nvkm_instobj_destroy(&node->base);
  55 }
  56
  57 static int
  58 nv04_instobj_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
  59                   struct nvkm_oclass *oclass, void *data, u32 size,
  60                   struct nvkm_object **pobject)
  61 {
  62         struct nv04_instmem_priv *priv = (void *)nvkm_instmem(parent);
  63         struct nv04_instobj_priv *node;
  64         struct nvkm_instobj_args *args = data;
  65         int ret;
  66
  67         if (!args->align)
  68                 args->align = 1;
  69
  70         ret = nvkm_instobj_create(parent, engine, oclass, &node);
  71         *pobject = nv_object(node);
  72         if (ret)
  73                 return ret;
  74
  75         ret = nvkm_mm_head(&priv->heap, 0, 1, args->size, args->size,
  76                            args->align, &node->mem);
  77         if (ret)
  78                 return ret;
  79
  80         node->base.addr = node->mem->offset;
  81         node->base.size = node->mem->length;
  82         return 0;
  83 }
  84
  85 struct nvkm_instobj_impl
  86 nv04_instobj_oclass = {
  87         .base.ofuncs = &(struct nvkm_ofuncs) {
  88                 .ctor = nv04_instobj_ctor,
  89                 .dtor = nv04_instobj_dtor,
  90                 .init = _nvkm_instobj_init,
  91                 .fini = _nvkm_instobj_fini,
  92                 .rd32 = nv04_instobj_rd32,
  93                 .wr32 = nv04_instobj_wr32,
  94         },
  95 };
  96
  97 /******************************************************************************
  98  * instmem subdev implementation
  99  *****************************************************************************/
 100
 101 static u32
 102 nv04_instmem_rd32(struct nvkm_object *object, u64 addr)
 103 {
 104         return nv_rd32(object, 0x700000 + addr);
 105 }
 106
 107 static void
 108 nv04_instmem_wr32(struct nvkm_object *object, u64 addr, u32 data)
 109 {
 110         return nv_wr32(object, 0x700000 + addr, data);
 111 }
 112
 113 void
 114 nv04_instmem_dtor(struct nvkm_object *object)
 115 {
 116         struct nv04_instmem_priv *priv = (void *)object;
 117         nvkm_gpuobj_ref(NULL, &priv->ramfc);
 118         nvkm_gpuobj_ref(NULL, &priv->ramro);
 119         nvkm_ramht_ref(NULL, &priv->ramht);
 120         nvkm_gpuobj_ref(NULL, &priv->vbios);
 121         nvkm_mm_fini(&priv->heap);
 122         if (priv->iomem)
 123                 iounmap(priv->iomem);
 124         nvkm_instmem_destroy(&priv->base);
 125 }
 126
 127 static int
 128 nv04_instmem_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
 129                   struct nvkm_oclass *oclass, void *data, u32 size,
 130                   struct nvkm_object **pobject)
 131 {
 132         struct nv04_instmem_priv *priv;
 133         int ret;
 134
 135         ret = nvkm_instmem_create(parent, engine, oclass, &priv);
 136         *pobject = nv_object(priv);
 137         if (ret)
 138                 return ret;
 139
 140         /* PRAMIN aperture maps over the end of VRAM, reserve it */
 141         priv->base.reserved = 512 * 1024;
 142
 143         ret = nvkm_mm_init(&priv->heap, 0, priv->base.reserved, 1);
 144         if (ret)
 145                 return ret;
 146
 147         /* 0x00000-0x10000: reserve for probable vbios image */
 148         ret = nvkm_gpuobj_new(nv_object(priv), NULL, 0x10000, 0, 0,
 149                               &priv->vbios);
 150         if (ret)
 151                 return ret;
 152
 153         /* 0x10000-0x18000: reserve for RAMHT */
 154         ret = nvkm_ramht_new(nv_object(priv), NULL, 0x08000, 0, &priv->ramht);
 155         if (ret)
 156                 return ret;
 157
 158         /* 0x18000-0x18800: reserve for RAMFC (enough for 32 nv30 channels) */
 159         ret = nvkm_gpuobj_new(nv_object(priv), NULL, 0x00800, 0,
 160                               NVOBJ_FLAG_ZERO_ALLOC, &priv->ramfc);
 161         if (ret)
 162                 return ret;
 163
 164         /* 0x18800-0x18a00: reserve for RAMRO */
 165         ret = nvkm_gpuobj_new(nv_object(priv), NULL, 0x00200, 0, 0,
 166                               &priv->ramro);
 167         if (ret)
 168                 return ret;
 169
 170         return 0;
 171 }
 172
 173 struct nvkm_oclass *
 174 nv04_instmem_oclass = &(struct nvkm_instmem_impl) {
 175         .base.handle = NV_SUBDEV(INSTMEM, 0x04),
 176         .base.ofuncs = &(struct nvkm_ofuncs) {
 177                 .ctor = nv04_instmem_ctor,
 178                 .dtor = nv04_instmem_dtor,
 179                 .init = _nvkm_instmem_init,
 180                 .fini = _nvkm_instmem_fini,
 181                 .rd32 = nv04_instmem_rd32,
 182                 .wr32 = nv04_instmem_wr32,
 183         },
 184         .instobj = &nv04_instobj_oclass.base,
 185 }.base;