drivers/gpu/drm/nouveau/core/core/client.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 <core/object.h>
  26 #include <core/client.h>
  27 #include <core/handle.h>
  28 #include <core/option.h>
  29 #include <nvif/unpack.h>
  30 #include <nvif/class.h>
  31
  32 #include <nvif/unpack.h>
  33 #include <nvif/event.h>
  34
  35 #include <engine/device.h>
  36
  37 struct nvkm_client_notify {
  38         struct nouveau_client *client;
  39         struct nvkm_notify n;
  40         u8 version;
  41         u8 size;
  42         union {
  43                 struct nvif_notify_rep_v0 v0;
  44         } rep;
  45 };
  46
  47 static int
  48 nvkm_client_notify(struct nvkm_notify *n)
  49 {
  50         struct nvkm_client_notify *notify = container_of(n, typeof(*notify), n);
  51         struct nouveau_client *client = notify->client;
  52         return client->ntfy(&notify->rep, notify->size, n->data, n->size);
  53 }
  54
  55 int
  56 nvkm_client_notify_put(struct nouveau_client *client, int index)
  57 {
  58         if (index < ARRAY_SIZE(client->notify)) {
  59                 if (client->notify[index]) {
  60                         nvkm_notify_put(&client->notify[index]->n);
  61                         return 0;
  62                 }
  63         }
  64         return -ENOENT;
  65 }
  66
  67 int
  68 nvkm_client_notify_get(struct nouveau_client *client, int index)
  69 {
  70         if (index < ARRAY_SIZE(client->notify)) {
  71                 if (client->notify[index]) {
  72                         nvkm_notify_get(&client->notify[index]->n);
  73                         return 0;
  74                 }
  75         }
  76         return -ENOENT;
  77 }
  78
  79 int
  80 nvkm_client_notify_del(struct nouveau_client *client, int index)
  81 {
  82         if (index < ARRAY_SIZE(client->notify)) {
  83                 if (client->notify[index]) {
  84                         nvkm_notify_fini(&client->notify[index]->n);
  85                         kfree(client->notify[index]);
  86                         client->notify[index] = NULL;
  87                         return 0;
  88                 }
  89         }
  90         return -ENOENT;
  91 }
  92
  93 int
  94 nvkm_client_notify_new(struct nouveau_object *object,
  95                        struct nvkm_event *event, void *data, u32 size)
  96 {
  97         struct nouveau_client *client = nouveau_client(object);
  98         struct nvkm_client_notify *notify;
  99         union {
 100                 struct nvif_notify_req_v0 v0;
 101         } *req = data;
 102         u8  index, reply;
 103         int ret;
 104
 105         for (index = 0; index < ARRAY_SIZE(client->notify); index++) {
 106                 if (!client->notify[index])
 107                         break;
 108         }
 109
 110         if (index == ARRAY_SIZE(client->notify))
 111                 return -ENOSPC;
 112
 113         notify = kzalloc(sizeof(*notify), GFP_KERNEL);
 114         if (!notify)
 115                 return -ENOMEM;
 116
 117         nv_ioctl(client, "notify new size %d\n", size);
 118         if (nvif_unpack(req->v0, 0, 0, true)) {
 119                 nv_ioctl(client, "notify new vers %d reply %d route %02x "
 120                                  "token %llx\n", req->v0.version,
 121                          req->v0.reply, req->v0.route, req->v0.token);
 122                 notify->version = req->v0.version;
 123                 notify->size = sizeof(notify->rep.v0);
 124                 notify->rep.v0.version = req->v0.version;
 125                 notify->rep.v0.route = req->v0.route;
 126                 notify->rep.v0.token = req->v0.token;
 127                 reply = req->v0.reply;
 128         }
 129
 130         if (ret == 0) {
 131                 ret = nvkm_notify_init(object, event, nvkm_client_notify,
 132                                        false, data, size, reply, &notify->n);
 133                 if (ret == 0) {
 134                         client->notify[index] = notify;
 135                         notify->client = client;
 136                         return index;
 137                 }
 138         }
 139
 140         kfree(notify);
 141         return ret;
 142 }
 143
 144 static int
 145 nouveau_client_devlist(struct nouveau_object *object, void *data, u32 size)
 146 {
 147         union {
 148                 struct nv_client_devlist_v0 v0;
 149         } *args = data;
 150         int ret;
 151
 152         nv_ioctl(object, "client devlist size %d\n", size);
 153         if (nvif_unpack(args->v0, 0, 0, true)) {
 154                 nv_ioctl(object, "client devlist vers %d count %d\n",
 155                          args->v0.version, args->v0.count);
 156                 if (size == sizeof(args->v0.device[0]) * args->v0.count) {
 157                         ret = nouveau_device_list(args->v0.device,
 158                                                   args->v0.count);
 159                         if (ret >= 0) {
 160                                 args->v0.count = ret;
 161                                 ret = 0;
 162                         }
 163                 } else {
 164                         ret = -EINVAL;
 165                 }
 166         }
 167
 168         return ret;
 169 }
 170
 171 static int
 172 nouveau_client_mthd(struct nouveau_object *object, u32 mthd,
 173                     void *data, u32 size)
 174 {
 175         switch (mthd) {
 176         case NV_CLIENT_DEVLIST:
 177                 return nouveau_client_devlist(object, data, size);
 178         default:
 179                 break;
 180         }
 181         return -EINVAL;
 182 }
 183
 184 static void
 185 nouveau_client_dtor(struct nouveau_object *object)
 186 {
 187         struct nouveau_client *client = (void *)object;
 188         int i;
 189         for (i = 0; i < ARRAY_SIZE(client->notify); i++)
 190                 nvkm_client_notify_del(client, i);
 191         nouveau_object_ref(NULL, &client->device);
 192         nouveau_handle_destroy(client->root);
 193         nouveau_namedb_destroy(&client->base);
 194 }
 195
 196 static struct nouveau_oclass
 197 nouveau_client_oclass = {
 198         .ofuncs = &(struct nouveau_ofuncs) {
 199                 .dtor = nouveau_client_dtor,
 200                 .mthd = nouveau_client_mthd,
 201         },
 202 };
 203
 204 int
 205 nouveau_client_create_(const char *name, u64 devname, const char *cfg,
 206                        const char *dbg, int length, void **pobject)
 207 {
 208         struct nouveau_object *device;
 209         struct nouveau_client *client;
 210         int ret;
 211
 212         device = (void *)nouveau_device_find(devname);
 213         if (!device)
 214                 return -ENODEV;
 215
 216         ret = nouveau_namedb_create_(NULL, NULL, &nouveau_client_oclass,
 217                                      NV_CLIENT_CLASS, NULL,
 218                                      (1ULL << NVDEV_ENGINE_DEVICE),
 219                                      length, pobject);
 220         client = *pobject;
 221         if (ret)
 222                 return ret;
 223
 224         ret = nouveau_handle_create(nv_object(client), ~0, ~0,
 225                                     nv_object(client), &client->root);
 226         if (ret)
 227                 return ret;
 228
 229         /* prevent init/fini being called, os in in charge of this */
 230         atomic_set(&nv_object(client)->usecount, 2);
 231
 232         nouveau_object_ref(device, &client->device);
 233         snprintf(client->name, sizeof(client->name), "%s", name);
 234         client->debug = nouveau_dbgopt(dbg, "CLIENT");
 235         return 0;
 236 }
 237
 238 int
 239 nouveau_client_init(struct nouveau_client *client)
 240 {
 241         int ret;
 242         nv_debug(client, "init running\n");
 243         ret = nouveau_handle_init(client->root);
 244         nv_debug(client, "init completed with %d\n", ret);
 245         return ret;
 246 }
 247
 248 int
 249 nouveau_client_fini(struct nouveau_client *client, bool suspend)
 250 {
 251         const char *name[2] = { "fini", "suspend" };
 252         int ret, i;
 253         nv_debug(client, "%s running\n", name[suspend]);
 254         nv_debug(client, "%s notify\n", name[suspend]);
 255         for (i = 0; i < ARRAY_SIZE(client->notify); i++)
 256                 nvkm_client_notify_put(client, i);
 257         nv_debug(client, "%s object\n", name[suspend]);
 258         ret = nouveau_handle_fini(client->root, suspend);
 259         nv_debug(client, "%s completed with %d\n", name[suspend], ret);
 260         return ret;
 261 }
 262
 263 const char *
 264 nouveau_client_name(void *obj)
 265 {
 266         const char *client_name = "unknown";
 267         struct nouveau_client *client = nouveau_client(obj);
 268         if (client)
 269                 client_name = client->name;
 270         return client_name;
 271 }