drivers/gpu/drm/nouveau/core/subdev/instmem/base.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 <subdev/instmem.h>
  26
  27 int
  28 nouveau_instobj_create_(struct nouveau_object *parent,
  29                         struct nouveau_object *engine,
  30                         struct nouveau_oclass *oclass,
  31                         int length, void **pobject)
  32 {
  33         struct nouveau_instmem *imem = (void *)engine;
  34         struct nouveau_instobj *iobj;
  35         int ret;
  36
  37         ret = nouveau_object_create_(parent, engine, oclass, NV_MEMOBJ_CLASS,
  38                                      length, pobject);
  39         iobj = *pobject;
  40         if (ret)
  41                 return ret;
  42
  43         list_add(&iobj->head, &imem->list);
  44         return 0;
  45 }
  46
  47 void
  48 nouveau_instobj_destroy(struct nouveau_instobj *iobj)
  49 {
  50         if (iobj->head.prev)
  51                 list_del(&iobj->head);
  52         return nouveau_object_destroy(&iobj->base);
  53 }
  54
  55 void
  56 _nouveau_instobj_dtor(struct nouveau_object *object)
  57 {
  58         struct nouveau_instobj *iobj = (void *)object;
  59         return nouveau_instobj_destroy(iobj);
  60 }
  61
  62 int
  63 nouveau_instmem_create_(struct nouveau_object *parent,
  64                         struct nouveau_object *engine,
  65                         struct nouveau_oclass *oclass,
  66                         int length, void **pobject)
  67 {
  68         struct nouveau_instmem *imem;
  69         int ret;
  70
  71         ret = nouveau_subdev_create_(parent, engine, oclass, 0,
  72                                      "INSTMEM", "instmem", length, pobject);
  73         imem = *pobject;
  74         if (ret)
  75                 return ret;
  76
  77         INIT_LIST_HEAD(&imem->list);
  78         return 0;
  79 }
  80
  81 int
  82 nouveau_instmem_init(struct nouveau_instmem *imem)
  83 {
  84         struct nouveau_instobj *iobj;
  85         int ret, i;
  86
  87         ret = nouveau_subdev_init(&imem->base);
  88         if (ret)
  89                 return ret;
  90
  91         list_for_each_entry(iobj, &imem->list, head) {
  92                 if (iobj->suspend) {
  93                         for (i = 0; i < iobj->size; i += 4)
  94                                 nv_wo32(iobj, i, iobj->suspend[i / 4]);
  95                         vfree(iobj->suspend);
  96                         iobj->suspend = NULL;
  97                 }
  98         }
  99
 100         return 0;
 101 }
 102
 103 int
 104 nouveau_instmem_fini(struct nouveau_instmem *imem, bool suspend)
 105 {
 106         struct nouveau_instobj *iobj;
 107         int i;
 108
 109         if (suspend) {
 110                 list_for_each_entry(iobj, &imem->list, head) {
 111                         iobj->suspend = vmalloc(iobj->size);
 112                         if (iobj->suspend) {
 113                                 for (i = 0; i < iobj->size; i += 4)
 114                                         iobj->suspend[i / 4] = nv_ro32(iobj, i);
 115                         } else
 116                                 return -ENOMEM;
 117                 }
 118         }
 119
 120         return nouveau_subdev_fini(&imem->base, suspend);
 121 }
 122
 123 int
 124 _nouveau_instmem_init(struct nouveau_object *object)
 125 {
 126         struct nouveau_instmem *imem = (void *)object;
 127         return nouveau_instmem_init(imem);
 128 }
 129
 130 int
 131 _nouveau_instmem_fini(struct nouveau_object *object, bool suspend)
 132 {
 133         struct nouveau_instmem *imem = (void *)object;
 134         return nouveau_instmem_fini(imem, suspend);
 135 }