| 1 | /* $NetBSD: nouveau_core_namedb.c,v 1.1.1.1 2014/08/06 12:36:23 riastradh Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright 2012 Red Hat Inc. |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 7 | * copy of this software and associated documentation files (the "Software"), |
| 8 | * to deal in the Software without restriction, including without limitation |
| 9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 10 | * and/or sell copies of the Software, and to permit persons to whom the |
| 11 | * Software is furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 20 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 21 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 22 | * OTHER DEALINGS IN THE SOFTWARE. |
| 23 | * |
| 24 | * Authors: Ben Skeggs |
| 25 | */ |
| 26 | |
| 27 | #include <sys/cdefs.h> |
| 28 | __KERNEL_RCSID(0, "$NetBSD: nouveau_core_namedb.c,v 1.1.1.1 2014/08/06 12:36:23 riastradh Exp $" ); |
| 29 | |
| 30 | #include <core/object.h> |
| 31 | #include <core/namedb.h> |
| 32 | #include <core/handle.h> |
| 33 | #include <core/gpuobj.h> |
| 34 | |
| 35 | static struct nouveau_handle * |
| 36 | nouveau_namedb_lookup(struct nouveau_namedb *namedb, u32 name) |
| 37 | { |
| 38 | struct nouveau_handle *handle; |
| 39 | |
| 40 | list_for_each_entry(handle, &namedb->list, node) { |
| 41 | if (handle->name == name) |
| 42 | return handle; |
| 43 | } |
| 44 | |
| 45 | return NULL; |
| 46 | } |
| 47 | |
| 48 | static struct nouveau_handle * |
| 49 | nouveau_namedb_lookup_class(struct nouveau_namedb *namedb, u16 oclass) |
| 50 | { |
| 51 | struct nouveau_handle *handle; |
| 52 | |
| 53 | list_for_each_entry(handle, &namedb->list, node) { |
| 54 | if (nv_mclass(handle->object) == oclass) |
| 55 | return handle; |
| 56 | } |
| 57 | |
| 58 | return NULL; |
| 59 | } |
| 60 | |
| 61 | static struct nouveau_handle * |
| 62 | nouveau_namedb_lookup_vinst(struct nouveau_namedb *namedb, u64 vinst) |
| 63 | { |
| 64 | struct nouveau_handle *handle; |
| 65 | |
| 66 | list_for_each_entry(handle, &namedb->list, node) { |
| 67 | if (nv_iclass(handle->object, NV_GPUOBJ_CLASS)) { |
| 68 | if (nv_gpuobj(handle->object)->addr == vinst) |
| 69 | return handle; |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | return NULL; |
| 74 | } |
| 75 | |
| 76 | static struct nouveau_handle * |
| 77 | nouveau_namedb_lookup_cinst(struct nouveau_namedb *namedb, u32 cinst) |
| 78 | { |
| 79 | struct nouveau_handle *handle; |
| 80 | |
| 81 | list_for_each_entry(handle, &namedb->list, node) { |
| 82 | if (nv_iclass(handle->object, NV_GPUOBJ_CLASS)) { |
| 83 | if (nv_gpuobj(handle->object)->node && |
| 84 | nv_gpuobj(handle->object)->node->offset == cinst) |
| 85 | return handle; |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | return NULL; |
| 90 | } |
| 91 | |
| 92 | int |
| 93 | nouveau_namedb_insert(struct nouveau_namedb *namedb, u32 name, |
| 94 | struct nouveau_object *object, |
| 95 | struct nouveau_handle *handle) |
| 96 | { |
| 97 | int ret = -EEXIST; |
| 98 | write_lock_irq(&namedb->lock); |
| 99 | if (!nouveau_namedb_lookup(namedb, name)) { |
| 100 | nouveau_object_ref(object, &handle->object); |
| 101 | handle->namedb = namedb; |
| 102 | list_add(&handle->node, &namedb->list); |
| 103 | ret = 0; |
| 104 | } |
| 105 | write_unlock_irq(&namedb->lock); |
| 106 | return ret; |
| 107 | } |
| 108 | |
| 109 | void |
| 110 | nouveau_namedb_remove(struct nouveau_handle *handle) |
| 111 | { |
| 112 | struct nouveau_namedb *namedb = handle->namedb; |
| 113 | struct nouveau_object *object = handle->object; |
| 114 | write_lock_irq(&namedb->lock); |
| 115 | list_del(&handle->node); |
| 116 | write_unlock_irq(&namedb->lock); |
| 117 | nouveau_object_ref(NULL, &object); |
| 118 | } |
| 119 | |
| 120 | struct nouveau_handle * |
| 121 | nouveau_namedb_get(struct nouveau_namedb *namedb, u32 name) |
| 122 | { |
| 123 | struct nouveau_handle *handle; |
| 124 | read_lock(&namedb->lock); |
| 125 | handle = nouveau_namedb_lookup(namedb, name); |
| 126 | if (handle == NULL) |
| 127 | read_unlock(&namedb->lock); |
| 128 | return handle; |
| 129 | } |
| 130 | |
| 131 | struct nouveau_handle * |
| 132 | nouveau_namedb_get_class(struct nouveau_namedb *namedb, u16 oclass) |
| 133 | { |
| 134 | struct nouveau_handle *handle; |
| 135 | read_lock(&namedb->lock); |
| 136 | handle = nouveau_namedb_lookup_class(namedb, oclass); |
| 137 | if (handle == NULL) |
| 138 | read_unlock(&namedb->lock); |
| 139 | return handle; |
| 140 | } |
| 141 | |
| 142 | struct nouveau_handle * |
| 143 | nouveau_namedb_get_vinst(struct nouveau_namedb *namedb, u64 vinst) |
| 144 | { |
| 145 | struct nouveau_handle *handle; |
| 146 | read_lock(&namedb->lock); |
| 147 | handle = nouveau_namedb_lookup_vinst(namedb, vinst); |
| 148 | if (handle == NULL) |
| 149 | read_unlock(&namedb->lock); |
| 150 | return handle; |
| 151 | } |
| 152 | |
| 153 | struct nouveau_handle * |
| 154 | nouveau_namedb_get_cinst(struct nouveau_namedb *namedb, u32 cinst) |
| 155 | { |
| 156 | struct nouveau_handle *handle; |
| 157 | read_lock(&namedb->lock); |
| 158 | handle = nouveau_namedb_lookup_cinst(namedb, cinst); |
| 159 | if (handle == NULL) |
| 160 | read_unlock(&namedb->lock); |
| 161 | return handle; |
| 162 | } |
| 163 | |
| 164 | void |
| 165 | nouveau_namedb_put(struct nouveau_handle *handle) |
| 166 | { |
| 167 | if (handle) |
| 168 | read_unlock(&handle->namedb->lock); |
| 169 | } |
| 170 | |
| 171 | int |
| 172 | nouveau_namedb_create_(struct nouveau_object *parent, |
| 173 | struct nouveau_object *engine, |
| 174 | struct nouveau_oclass *oclass, u32 pclass, |
| 175 | struct nouveau_oclass *sclass, u64 engcls, |
| 176 | int length, void **pobject) |
| 177 | { |
| 178 | struct nouveau_namedb *namedb; |
| 179 | int ret; |
| 180 | |
| 181 | ret = nouveau_parent_create_(parent, engine, oclass, pclass | |
| 182 | NV_NAMEDB_CLASS, sclass, engcls, |
| 183 | length, pobject); |
| 184 | namedb = *pobject; |
| 185 | if (ret) |
| 186 | return ret; |
| 187 | |
| 188 | rwlock_init(&namedb->lock); |
| 189 | INIT_LIST_HEAD(&namedb->list); |
| 190 | return 0; |
| 191 | } |
| 192 | |
| 193 | int |
| 194 | _nouveau_namedb_ctor(struct nouveau_object *parent, |
| 195 | struct nouveau_object *engine, |
| 196 | struct nouveau_oclass *oclass, void *data, u32 size, |
| 197 | struct nouveau_object **pobject) |
| 198 | { |
| 199 | struct nouveau_namedb *object; |
| 200 | int ret; |
| 201 | |
| 202 | ret = nouveau_namedb_create(parent, engine, oclass, 0, NULL, 0, &object); |
| 203 | *pobject = nv_object(object); |
| 204 | if (ret) |
| 205 | return ret; |
| 206 | |
| 207 | return 0; |
| 208 | } |
| 209 | |