drivers/gpu/drm/nouveau/nvkm/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 #include <core/client.h>
  25 #include <core/device.h>
  26 #include <core/notify.h>
  27 #include <core/option.h>
  28
  29 #include <nvif/class.h>
  30 #include <nvif/event.h>
  31 #include <nvif/if0000.h>
  32 #include <nvif/unpack.h>
  33
  34 static int
  35 nvkm_uclient_new(const struct nvkm_oclass *oclass, void *argv, u32 argc,
  36                  struct nvkm_object **pobject)
  37 {
  38         union {
  39                 struct nvif_client_v0 v0;
  40         } *args = argv;
  41         struct nvkm_client *client;
  42         int ret = -ENOSYS;
  43
  44         if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))){
  45                 args->v0.name[sizeof(args->v0.name) - 1] = 0;
  46                 ret = nvkm_client_new(args->v0.name, args->v0.device, NULL,
  47                                       NULL, oclass->client->ntfy, &client);
  48                 if (ret)
  49                         return ret;
  50         } else
  51                 return ret;
  52
  53         client->object.client = oclass->client;
  54         client->object.handle = oclass->handle;
  55         client->object.route  = oclass->route;
  56         client->object.token  = oclass->token;
  57         client->object.object = oclass->object;
  58         client->debug = oclass->client->debug;
  59         *pobject = &client->object;
  60         return 0;
  61 }
  62
  63 const struct nvkm_sclass
  64 nvkm_uclient_sclass = {
  65         .oclass = NVIF_CLASS_CLIENT,
  66         .minver = 0,
  67         .maxver = 0,
  68         .ctor = nvkm_uclient_new,
  69 };
  70
  71 struct nvkm_client_notify {
  72         struct nvkm_client *client;
  73         struct nvkm_notify n;
  74         u8 version;
  75         u8 size;
  76         union {
  77                 struct nvif_notify_rep_v0 v0;
  78         } rep;
  79 };
  80
  81 static int
  82 nvkm_client_notify(struct nvkm_notify *n)
  83 {
  84         struct nvkm_client_notify *notify = container_of(n, typeof(*notify), n);
  85         struct nvkm_client *client = notify->client;
  86         return client->ntfy(&notify->rep, notify->size, n->data, n->size);
  87 }
  88
  89 int
  90 nvkm_client_notify_put(struct nvkm_client *client, int index)
  91 {
  92         if (index < ARRAY_SIZE(client->notify)) {
  93                 if (client->notify[index]) {
  94                         nvkm_notify_put(&client->notify[index]->n);
  95                         return 0;
  96                 }
  97         }
  98         return -ENOENT;
  99 }
 100
 101 int
 102 nvkm_client_notify_get(struct nvkm_client *client, int index)
 103 {
 104         if (index < ARRAY_SIZE(client->notify)) {
 105                 if (client->notify[index]) {
 106                         nvkm_notify_get(&client->notify[index]->n);
 107                         return 0;
 108                 }
 109         }
 110         return -ENOENT;
 111 }
 112
 113 int
 114 nvkm_client_notify_del(struct nvkm_client *client, int index)
 115 {
 116         if (index < ARRAY_SIZE(client->notify)) {
 117                 if (client->notify[index]) {
 118                         nvkm_notify_fini(&client->notify[index]->n);
 119                         kfree(client->notify[index]);
 120                         client->notify[index] = NULL;
 121                         return 0;
 122                 }
 123         }
 124         return -ENOENT;
 125 }
 126
 127 int
 128 nvkm_client_notify_new(struct nvkm_object *object,
 129                        struct nvkm_event *event, void *data, u32 size)
 130 {
 131         struct nvkm_client *client = object->client;
 132         struct nvkm_client_notify *notify;
 133         union {
 134                 struct nvif_notify_req_v0 v0;
 135         } *req = data;
 136         u8  index, reply;
 137         int ret = -ENOSYS;
 138
 139         for (index = 0; index < ARRAY_SIZE(client->notify); index++) {
 140                 if (!client->notify[index])
 141                         break;
 142         }
 143
 144         if (index == ARRAY_SIZE(client->notify))
 145                 return -ENOSPC;
 146
 147         notify = kzalloc(sizeof(*notify), GFP_KERNEL);
 148         if (!notify)
 149                 return -ENOMEM;
 150
 151         nvif_ioctl(object, "notify new size %d\n", size);
 152         if (!(ret = nvif_unpack(ret, &data, &size, req->v0, 0, 0, true))) {
 153                 nvif_ioctl(object, "notify new vers %d reply %d route %02x "
 154                                    "token %llx\n", req->v0.version,
 155                            req->v0.reply, req->v0.route, req->v0.token);
 156                 notify->version = req->v0.version;
 157                 notify->size = sizeof(notify->rep.v0);
 158                 notify->rep.v0.version = req->v0.version;
 159                 notify->rep.v0.route = req->v0.route;
 160                 notify->rep.v0.token = req->v0.token;
 161                 reply = req->v0.reply;
 162         }
 163
 164         if (ret == 0) {
 165                 ret = nvkm_notify_init(object, event, nvkm_client_notify,
 166                                        false, data, size, reply, &notify->n);
 167                 if (ret == 0) {
 168                         client->notify[index] = notify;
 169                         notify->client = client;
 170                         return index;
 171                 }
 172         }
 173
 174         kfree(notify);
 175         return ret;
 176 }
 177
 178 static const struct nvkm_object_func nvkm_client;
 179 struct nvkm_client *
 180 nvkm_client_search(struct nvkm_client *client, u64 handle)
 181 {
 182         struct nvkm_object *object;
 183
 184         object = nvkm_object_search(client, handle, &nvkm_client);
 185         if (IS_ERR(object))
 186                 return (void *)object;
 187
 188         return nvkm_client(object);
 189 }
 190
 191 static int
 192 nvkm_client_mthd_devlist(struct nvkm_client *client, void *data, u32 size)
 193 {
 194         union {
 195                 struct nvif_client_devlist_v0 v0;
 196         } *args = data;
 197         int ret = -ENOSYS;
 198
 199         nvif_ioctl(&client->object, "client devlist size %d\n", size);
 200         if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, true))) {
 201                 nvif_ioctl(&client->object, "client devlist vers %d count %d\n",
 202                            args->v0.version, args->v0.count);
 203                 if (size == sizeof(args->v0.device[0]) * args->v0.count) {
 204                         ret = nvkm_device_list(args->v0.device, args->v0.count);
 205                         if (ret >= 0) {
 206                                 args->v0.count = ret;
 207                                 ret = 0;
 208                         }
 209                 } else {
 210                         ret = -EINVAL;
 211                 }
 212         }
 213
 214         return ret;
 215 }
 216
 217 static int
 218 nvkm_client_mthd(struct nvkm_object *object, u32 mthd, void *data, u32 size)
 219 {
 220         struct nvkm_client *client = nvkm_client(object);
 221         switch (mthd) {
 222         case NVIF_CLIENT_V0_DEVLIST:
 223                 return nvkm_client_mthd_devlist(client, data, size);
 224         default:
 225                 break;
 226         }
 227         return -EINVAL;
 228 }
 229
 230 static int
 231 nvkm_client_child_new(const struct nvkm_oclass *oclass,
 232                       void *data, u32 size, struct nvkm_object **pobject)
 233 {
 234         return oclass->base.ctor(oclass, data, size, pobject);
 235 }
 236
 237 static int
 238 nvkm_client_child_get(struct nvkm_object *object, int index,
 239                       struct nvkm_oclass *oclass)
 240 {
 241         const struct nvkm_sclass *sclass;
 242
 243         switch (index) {
 244         case 0: sclass = &nvkm_uclient_sclass; break;
 245         case 1: sclass = &nvkm_udevice_sclass; break;
 246         default:
 247                 return -EINVAL;
 248         }
 249
 250         oclass->ctor = nvkm_client_child_new;
 251         oclass->base = *sclass;
 252         return 0;
 253 }
 254
 255 static int
 256 nvkm_client_fini(struct nvkm_object *object, bool suspend)
 257 {
 258         struct nvkm_client *client = nvkm_client(object);
 259         const char *name[2] = { "fini", "suspend" };
 260         int i;
 261         nvif_debug(object, "%s notify\n", name[suspend]);
 262         for (i = 0; i < ARRAY_SIZE(client->notify); i++)
 263                 nvkm_client_notify_put(client, i);
 264         return 0;
 265 }
 266
 267 static void *
 268 nvkm_client_dtor(struct nvkm_object *object)
 269 {
 270         struct nvkm_client *client = nvkm_client(object);
 271         int i;
 272         for (i = 0; i < ARRAY_SIZE(client->notify); i++)
 273                 nvkm_client_notify_del(client, i);
 274         return client;
 275 }
 276
 277 static const struct nvkm_object_func
 278 nvkm_client = {
 279         .dtor = nvkm_client_dtor,
 280         .fini = nvkm_client_fini,
 281         .mthd = nvkm_client_mthd,
 282         .sclass = nvkm_client_child_get,
 283 };
 284
 285 int
 286 nvkm_client_new(const char *name, u64 device, const char *cfg,
 287                 const char *dbg,
 288                 int (*ntfy)(const void *, u32, const void *, u32),
 289                 struct nvkm_client **pclient)
 290 {
 291         struct nvkm_oclass oclass = { .base = nvkm_uclient_sclass };
 292         struct nvkm_client *client;
 293
 294         if (!(client = *pclient = kzalloc(sizeof(*client), GFP_KERNEL)))
 295                 return -ENOMEM;
 296         oclass.client = client;
 297
 298         nvkm_object_ctor(&nvkm_client, &oclass, &client->object);
 299         snprintf(client->name, sizeof(client->name), "%s", name);
 300         client->device = device;
 301         client->debug = nvkm_dbgopt(dbg, "CLIENT");
 302         client->objroot = RB_ROOT;
 303         client->ntfy = ntfy;
 304         return 0;
 305 }