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 "priv.h" 25 26 #include <core/engine.h> 27 28 /****************************************************************************** 29 * instmem object base implementation 30 *****************************************************************************/ 31 32 void 33 _nvkm_instobj_dtor(struct nvkm_object *object) 34 { 35 struct nvkm_instmem *imem = nvkm_instmem(object); 36 struct nvkm_instobj *iobj = (void *)object; 37 38 mutex_lock(&nv_subdev(imem)->mutex); 39 list_del(&iobj->head); 40 mutex_unlock(&nv_subdev(imem)->mutex); 41 42 return nvkm_object_destroy(&iobj->base); 43 } 44 45 int 46 nvkm_instobj_create_(struct nvkm_object *parent, struct nvkm_object *engine, 47 struct nvkm_oclass *oclass, int length, void **pobject) 48 { 49 struct nvkm_instmem *imem = nvkm_instmem(parent); 50 struct nvkm_instobj *iobj; 51 int ret; 52 53 ret = nvkm_object_create_(parent, engine, oclass, NV_MEMOBJ_CLASS, 54 length, pobject); 55 iobj = *pobject; 56 if (ret) 57 return ret; 58 59 mutex_lock(&imem->base.mutex); 60 list_add(&iobj->head, &imem->list); 61 mutex_unlock(&imem->base.mutex); 62 return 0; 63 } 64 65 /****************************************************************************** 66 * instmem subdev base implementation 67 *****************************************************************************/ 68 69 static int 70 nvkm_instmem_alloc(struct nvkm_instmem *imem, struct nvkm_object *parent, 71 u32 size, u32 align, struct nvkm_object **pobject) 72 { 73 struct nvkm_instmem_impl *impl = (void *)imem->base.object.oclass; 74 struct nvkm_instobj_args args = { .size = size, .align = align }; 75 return nvkm_object_ctor(parent, &parent->engine->subdev.object, 76 impl->instobj, &args, sizeof(args), pobject); 77 } 78 79 int 80 _nvkm_instmem_fini(struct nvkm_object *object, bool suspend) 81 { 82 struct nvkm_instmem *imem = (void *)object; 83 struct nvkm_instobj *iobj; 84 int i, ret = 0; 85 86 if (suspend) { 87 mutex_lock(&imem->base.mutex); 88 list_for_each_entry(iobj, &imem->list, head) { 89 iobj->suspend = vmalloc(iobj->size); 90 if (!iobj->suspend) { 91 ret = -ENOMEM; 92 break; 93 } 94 95 for (i = 0; i < iobj->size; i += 4) 96 iobj->suspend[i / 4] = nv_ro32(iobj, i); 97 } 98 mutex_unlock(&imem->base.mutex); 99 if (ret) 100 return ret; 101 } 102 103 return nvkm_subdev_fini(&imem->base, suspend); 104 } 105 106 int 107 _nvkm_instmem_init(struct nvkm_object *object) 108 { 109 struct nvkm_instmem *imem = (void *)object; 110 struct nvkm_instobj *iobj; 111 int ret, i; 112 113 ret = nvkm_subdev_init(&imem->base); 114 if (ret) 115 return ret; 116 117 mutex_lock(&imem->base.mutex); 118 list_for_each_entry(iobj, &imem->list, head) { 119 if (iobj->suspend) { 120 for (i = 0; i < iobj->size; i += 4) 121 nv_wo32(iobj, i, iobj->suspend[i / 4]); 122 vfree(iobj->suspend); 123 iobj->suspend = NULL; 124 } 125 } 126 mutex_unlock(&imem->base.mutex); 127 return 0; 128 } 129 130 int 131 nvkm_instmem_create_(struct nvkm_object *parent, struct nvkm_object *engine, 132 struct nvkm_oclass *oclass, int length, void **pobject) 133 { 134 struct nvkm_instmem *imem; 135 int ret; 136 137 ret = nvkm_subdev_create_(parent, engine, oclass, 0, "INSTMEM", 138 "instmem", length, pobject); 139 imem = *pobject; 140 if (ret) 141 return ret; 142 143 INIT_LIST_HEAD(&imem->list); 144 imem->alloc = nvkm_instmem_alloc; 145 return 0; 146 } 147