| 1 | /* $NetBSD: nouveau_core_handle.c,v 1.2 2014/08/06 13:35:13 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_handle.c,v 1.2 2014/08/06 13:35:13 riastradh Exp $" ); |
| 29 | |
| 30 | #include <core/object.h> |
| 31 | #include <core/handle.h> |
| 32 | #include <core/client.h> |
| 33 | |
| 34 | #define hprintk(h,l,f,a...) do { \ |
| 35 | struct nouveau_client *c = nouveau_client((h)->object); \ |
| 36 | struct nouveau_handle *p = (h)->parent; u32 n = p ? p->name : ~0; \ |
| 37 | nv_printk((c), l, "0x%08x:0x%08x "f, n, (h)->name, ##a); \ |
| 38 | } while(0) |
| 39 | |
| 40 | int |
| 41 | nouveau_handle_init(struct nouveau_handle *handle) |
| 42 | { |
| 43 | struct nouveau_handle *item; |
| 44 | int ret; |
| 45 | |
| 46 | hprintk(handle, TRACE, "init running\n" ); |
| 47 | ret = nouveau_object_inc(handle->object); |
| 48 | if (ret) |
| 49 | return ret; |
| 50 | |
| 51 | hprintk(handle, TRACE, "init children\n" ); |
| 52 | list_for_each_entry(item, &handle->tree, head) { |
| 53 | ret = nouveau_handle_init(item); |
| 54 | if (ret) |
| 55 | goto fail; |
| 56 | } |
| 57 | |
| 58 | hprintk(handle, TRACE, "init completed\n" ); |
| 59 | return 0; |
| 60 | fail: |
| 61 | hprintk(handle, ERROR, "init failed with %d\n" , ret); |
| 62 | list_for_each_entry_continue_reverse(item, &handle->tree, head) { |
| 63 | nouveau_handle_fini(item, false); |
| 64 | } |
| 65 | |
| 66 | nouveau_object_dec(handle->object, false); |
| 67 | return ret; |
| 68 | } |
| 69 | |
| 70 | int |
| 71 | nouveau_handle_fini(struct nouveau_handle *handle, bool suspend) |
| 72 | { |
| 73 | static const char *name[2] = { "fini" , "suspend" }; |
| 74 | struct nouveau_handle *item; |
| 75 | int ret; |
| 76 | |
| 77 | hprintk(handle, TRACE, "%s children\n" , name[suspend]); |
| 78 | list_for_each_entry(item, &handle->tree, head) { |
| 79 | ret = nouveau_handle_fini(item, suspend); |
| 80 | if (ret && suspend) |
| 81 | goto fail; |
| 82 | } |
| 83 | |
| 84 | hprintk(handle, TRACE, "%s running\n" , name[suspend]); |
| 85 | if (handle->object) { |
| 86 | ret = nouveau_object_dec(handle->object, suspend); |
| 87 | if (ret && suspend) |
| 88 | goto fail; |
| 89 | } |
| 90 | |
| 91 | hprintk(handle, TRACE, "%s completed\n" , name[suspend]); |
| 92 | return 0; |
| 93 | fail: |
| 94 | hprintk(handle, ERROR, "%s failed with %d\n" , name[suspend], ret); |
| 95 | list_for_each_entry_continue_reverse(item, &handle->tree, head) { |
| 96 | int rret = nouveau_handle_init(item); |
| 97 | if (rret) |
| 98 | hprintk(handle, FATAL, "failed to restart, %d\n" , rret); |
| 99 | } |
| 100 | |
| 101 | return ret; |
| 102 | } |
| 103 | |
| 104 | int |
| 105 | nouveau_handle_create(struct nouveau_object *parent, u32 _parent, u32 _handle, |
| 106 | struct nouveau_object *object, |
| 107 | struct nouveau_handle **phandle) |
| 108 | { |
| 109 | struct nouveau_object *namedb; |
| 110 | struct nouveau_handle *handle; |
| 111 | int ret; |
| 112 | |
| 113 | namedb = parent; |
| 114 | while (!nv_iclass(namedb, NV_NAMEDB_CLASS)) |
| 115 | namedb = namedb->parent; |
| 116 | |
| 117 | handle = kzalloc(sizeof(*handle), GFP_KERNEL); |
| 118 | if (!handle) |
| 119 | return -ENOMEM; |
| 120 | |
| 121 | INIT_LIST_HEAD(&handle->head); |
| 122 | INIT_LIST_HEAD(&handle->tree); |
| 123 | handle->name = _handle; |
| 124 | handle->priv = ~0; |
| 125 | |
| 126 | ret = nouveau_namedb_insert(nv_namedb(namedb), _handle, object, handle); |
| 127 | if (ret) { |
| 128 | kfree(handle); |
| 129 | return ret; |
| 130 | } |
| 131 | |
| 132 | if (nv_parent(parent)->object_attach) { |
| 133 | ret = nv_parent(parent)->object_attach(parent, object, _handle); |
| 134 | if (ret < 0) { |
| 135 | nouveau_handle_destroy(handle); |
| 136 | return ret; |
| 137 | } |
| 138 | |
| 139 | handle->priv = ret; |
| 140 | } |
| 141 | |
| 142 | if (object != namedb) { |
| 143 | while (!nv_iclass(namedb, NV_CLIENT_CLASS)) |
| 144 | namedb = namedb->parent; |
| 145 | |
| 146 | handle->parent = nouveau_namedb_get(nv_namedb(namedb), _parent); |
| 147 | if (handle->parent) { |
| 148 | list_add(&handle->head, &handle->parent->tree); |
| 149 | nouveau_namedb_put(handle->parent); |
| 150 | } |
| 151 | } |
| 152 | |
| 153 | hprintk(handle, TRACE, "created\n" ); |
| 154 | |
| 155 | *phandle = handle; |
| 156 | |
| 157 | return 0; |
| 158 | } |
| 159 | |
| 160 | void |
| 161 | nouveau_handle_destroy(struct nouveau_handle *handle) |
| 162 | { |
| 163 | struct nouveau_handle *item, *temp; |
| 164 | |
| 165 | hprintk(handle, TRACE, "destroy running\n" ); |
| 166 | list_for_each_entry_safe(item, temp, &handle->tree, head) { |
| 167 | nouveau_handle_destroy(item); |
| 168 | } |
| 169 | list_del(&handle->head); |
| 170 | |
| 171 | if (handle->priv != ~0) { |
| 172 | struct nouveau_object *parent = handle->parent->object; |
| 173 | nv_parent(parent)->object_detach(parent, handle->priv); |
| 174 | } |
| 175 | |
| 176 | hprintk(handle, TRACE, "destroy completed\n" ); |
| 177 | nouveau_namedb_remove(handle); |
| 178 | kfree(handle); |
| 179 | } |
| 180 | |
| 181 | struct nouveau_object * |
| 182 | nouveau_handle_ref(struct nouveau_object *parent, u32 name) |
| 183 | { |
| 184 | struct nouveau_object *object = NULL; |
| 185 | struct nouveau_handle *handle; |
| 186 | |
| 187 | while (!nv_iclass(parent, NV_NAMEDB_CLASS)) |
| 188 | parent = parent->parent; |
| 189 | |
| 190 | handle = nouveau_namedb_get(nv_namedb(parent), name); |
| 191 | if (handle) { |
| 192 | nouveau_object_ref(handle->object, &object); |
| 193 | nouveau_namedb_put(handle); |
| 194 | } |
| 195 | |
| 196 | return object; |
| 197 | } |
| 198 | |
| 199 | struct nouveau_handle * |
| 200 | nouveau_handle_get_class(struct nouveau_object *engctx, u16 oclass) |
| 201 | { |
| 202 | struct nouveau_namedb *namedb; |
| 203 | if (engctx && (namedb = (void *)nv_pclass(engctx, NV_NAMEDB_CLASS))) |
| 204 | return nouveau_namedb_get_class(namedb, oclass); |
| 205 | return NULL; |
| 206 | } |
| 207 | |
| 208 | struct nouveau_handle * |
| 209 | nouveau_handle_get_vinst(struct nouveau_object *engctx, u64 vinst) |
| 210 | { |
| 211 | struct nouveau_namedb *namedb; |
| 212 | if (engctx && (namedb = (void *)nv_pclass(engctx, NV_NAMEDB_CLASS))) |
| 213 | return nouveau_namedb_get_vinst(namedb, vinst); |
| 214 | return NULL; |
| 215 | } |
| 216 | |
| 217 | struct nouveau_handle * |
| 218 | nouveau_handle_get_cinst(struct nouveau_object *engctx, u32 cinst) |
| 219 | { |
| 220 | struct nouveau_namedb *namedb; |
| 221 | if (engctx && (namedb = (void *)nv_pclass(engctx, NV_NAMEDB_CLASS))) |
| 222 | return nouveau_namedb_get_cinst(namedb, cinst); |
| 223 | return NULL; |
| 224 | } |
| 225 | |
| 226 | void |
| 227 | nouveau_handle_put(struct nouveau_handle *handle) |
| 228 | { |
| 229 | if (handle) |
| 230 | nouveau_namedb_put(handle); |
| 231 | } |
| 232 | |