kernel/drivers/gpu/drm/nouveau/nvkm/engine/device/user.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 #define nvkm_udevice(p) container_of((p), struct nvkm_udevice, object)
  25 #include "priv.h"
  26 #include "ctrl.h"
  27
  28 #include <core/client.h>
  29 #include <subdev/fb.h>
  30 #include <subdev/instmem.h>
  31 #include <subdev/timer.h>
  32
  33 #include <nvif/class.h>
  34 #include <nvif/unpack.h>
  35
  36 struct nvkm_udevice {
  37         struct nvkm_object object;
  38         struct nvkm_device *device;
  39 };
  40
  41 static int
  42 nvkm_udevice_info(struct nvkm_udevice *udev, void *data, u32 size)
  43 {
  44         struct nvkm_object *object = &udev->object;
  45         struct nvkm_device *device = udev->device;
  46         struct nvkm_fb *fb = device->fb;
  47         struct nvkm_instmem *imem = device->imem;
  48         union {
  49                 struct nv_device_info_v0 v0;
  50         } *args = data;
  51         int ret;
  52
  53         nvif_ioctl(object, "device info size %d\n", size);
  54         if (nvif_unpack(args->v0, 0, 0, false)) {
  55                 nvif_ioctl(object, "device info vers %d\n", args->v0.version);
  56         } else
  57                 return ret;
  58
  59         switch (device->chipset) {
  60         case 0x01a:
  61         case 0x01f:
  62         case 0x04c:
  63         case 0x04e:
  64         case 0x063:
  65         case 0x067:
  66         case 0x068:
  67         case 0x0aa:
  68         case 0x0ac:
  69         case 0x0af:
  70                 args->v0.platform = NV_DEVICE_INFO_V0_IGP;
  71                 break;
  72         default:
  73                 switch (device->type) {
  74                 case NVKM_DEVICE_PCI:
  75                         args->v0.platform = NV_DEVICE_INFO_V0_PCI;
  76                         break;
  77                 case NVKM_DEVICE_AGP:
  78                         args->v0.platform = NV_DEVICE_INFO_V0_AGP;
  79                         break;
  80                 case NVKM_DEVICE_PCIE:
  81                         args->v0.platform = NV_DEVICE_INFO_V0_PCIE;
  82                         break;
  83                 case NVKM_DEVICE_TEGRA:
  84                         args->v0.platform = NV_DEVICE_INFO_V0_SOC;
  85                         break;
  86                 default:
  87                         WARN_ON(1);
  88                         break;
  89                 }
  90                 break;
  91         }
  92
  93         switch (device->card_type) {
  94         case NV_04: args->v0.family = NV_DEVICE_INFO_V0_TNT; break;
  95         case NV_10:
  96         case NV_11: args->v0.family = NV_DEVICE_INFO_V0_CELSIUS; break;
  97         case NV_20: args->v0.family = NV_DEVICE_INFO_V0_KELVIN; break;
  98         case NV_30: args->v0.family = NV_DEVICE_INFO_V0_RANKINE; break;
  99         case NV_40: args->v0.family = NV_DEVICE_INFO_V0_CURIE; break;
 100         case NV_50: args->v0.family = NV_DEVICE_INFO_V0_TESLA; break;
 101         case NV_C0: args->v0.family = NV_DEVICE_INFO_V0_FERMI; break;
 102         case NV_E0: args->v0.family = NV_DEVICE_INFO_V0_KEPLER; break;
 103         case GM100: args->v0.family = NV_DEVICE_INFO_V0_MAXWELL; break;
 104         default:
 105                 args->v0.family = 0;
 106                 break;
 107         }
 108
 109         args->v0.chipset  = device->chipset;
 110         args->v0.revision = device->chiprev;
 111         if (fb && fb->ram)
 112                 args->v0.ram_size = args->v0.ram_user = fb->ram->size;
 113         else
 114                 args->v0.ram_size = args->v0.ram_user = 0;
 115         if (imem && args->v0.ram_size > 0)
 116                 args->v0.ram_user = args->v0.ram_user - imem->reserved;
 117
 118         strncpy(args->v0.chip, device->chip->name, sizeof(args->v0.chip));
 119         strncpy(args->v0.name, device->name, sizeof(args->v0.name));
 120         return 0;
 121 }
 122
 123 static int
 124 nvkm_udevice_time(struct nvkm_udevice *udev, void *data, u32 size)
 125 {
 126         struct nvkm_device *device = udev->device;
 127         union {
 128                 struct nv_device_time_v0 v0;
 129         } *args = data;
 130         int ret;
 131
 132         if (nvif_unpack(args->v0, 0, 0, false)) {
 133                 args->v0.time = nvkm_timer_read(device->timer);
 134         }
 135
 136         return ret;
 137 }
 138
 139 static int
 140 nvkm_udevice_mthd(struct nvkm_object *object, u32 mthd, void *data, u32 size)
 141 {
 142         struct nvkm_udevice *udev = nvkm_udevice(object);
 143         switch (mthd) {
 144         case NV_DEVICE_V0_INFO:
 145                 return nvkm_udevice_info(udev, data, size);
 146         case NV_DEVICE_V0_TIME:
 147                 return nvkm_udevice_time(udev, data, size);
 148         default:
 149                 break;
 150         }
 151         return -EINVAL;
 152 }
 153
 154 static int
 155 nvkm_udevice_rd08(struct nvkm_object *object, u64 addr, u8 *data)
 156 {
 157         struct nvkm_udevice *udev = nvkm_udevice(object);
 158         *data = nvkm_rd08(udev->device, addr);
 159         return 0;
 160 }
 161
 162 static int
 163 nvkm_udevice_rd16(struct nvkm_object *object, u64 addr, u16 *data)
 164 {
 165         struct nvkm_udevice *udev = nvkm_udevice(object);
 166         *data = nvkm_rd16(udev->device, addr);
 167         return 0;
 168 }
 169
 170 static int
 171 nvkm_udevice_rd32(struct nvkm_object *object, u64 addr, u32 *data)
 172 {
 173         struct nvkm_udevice *udev = nvkm_udevice(object);
 174         *data = nvkm_rd32(udev->device, addr);
 175         return 0;
 176 }
 177
 178 static int
 179 nvkm_udevice_wr08(struct nvkm_object *object, u64 addr, u8 data)
 180 {
 181         struct nvkm_udevice *udev = nvkm_udevice(object);
 182         nvkm_wr08(udev->device, addr, data);
 183         return 0;
 184 }
 185
 186 static int
 187 nvkm_udevice_wr16(struct nvkm_object *object, u64 addr, u16 data)
 188 {
 189         struct nvkm_udevice *udev = nvkm_udevice(object);
 190         nvkm_wr16(udev->device, addr, data);
 191         return 0;
 192 }
 193
 194 static int
 195 nvkm_udevice_wr32(struct nvkm_object *object, u64 addr, u32 data)
 196 {
 197         struct nvkm_udevice *udev = nvkm_udevice(object);
 198         nvkm_wr32(udev->device, addr, data);
 199         return 0;
 200 }
 201
 202 static int
 203 nvkm_udevice_map(struct nvkm_object *object, u64 *addr, u32 *size)
 204 {
 205         struct nvkm_udevice *udev = nvkm_udevice(object);
 206         struct nvkm_device *device = udev->device;
 207         *addr = device->func->resource_addr(device, 0);
 208         *size = device->func->resource_size(device, 0);
 209         return 0;
 210 }
 211
 212 static int
 213 nvkm_udevice_fini(struct nvkm_object *object, bool suspend)
 214 {
 215         struct nvkm_udevice *udev = nvkm_udevice(object);
 216         struct nvkm_device *device = udev->device;
 217         int ret = 0;
 218
 219         mutex_lock(&device->mutex);
 220         if (!--device->refcount) {
 221                 ret = nvkm_device_fini(device, suspend);
 222                 if (ret && suspend) {
 223                         device->refcount++;
 224                         goto done;
 225                 }
 226         }
 227
 228 done:
 229         mutex_unlock(&device->mutex);
 230         return ret;
 231 }
 232
 233 static int
 234 nvkm_udevice_init(struct nvkm_object *object)
 235 {
 236         struct nvkm_udevice *udev = nvkm_udevice(object);
 237         struct nvkm_device *device = udev->device;
 238         int ret = 0;
 239
 240         mutex_lock(&device->mutex);
 241         if (!device->refcount++) {
 242                 ret = nvkm_device_init(device);
 243                 if (ret) {
 244                         device->refcount--;
 245                         goto done;
 246                 }
 247         }
 248
 249 done:
 250         mutex_unlock(&device->mutex);
 251         return ret;
 252 }
 253
 254 static int
 255 nvkm_udevice_child_new(const struct nvkm_oclass *oclass,
 256                        void *data, u32 size, struct nvkm_object **pobject)
 257 {
 258         struct nvkm_udevice *udev = nvkm_udevice(oclass->parent);
 259         const struct nvkm_device_oclass *sclass = oclass->priv;
 260         return sclass->ctor(udev->device, oclass, data, size, pobject);
 261 }
 262
 263 static int
 264 nvkm_udevice_child_get(struct nvkm_object *object, int index,
 265                        struct nvkm_oclass *oclass)
 266 {
 267         struct nvkm_udevice *udev = nvkm_udevice(object);
 268         struct nvkm_device *device = udev->device;
 269         struct nvkm_engine *engine;
 270         u64 mask = (1ULL << NVKM_ENGINE_DMAOBJ) |
 271                    (1ULL << NVKM_ENGINE_FIFO) |
 272                    (1ULL << NVKM_ENGINE_DISP) |
 273                    (1ULL << NVKM_ENGINE_PM);
 274         const struct nvkm_device_oclass *sclass = NULL;
 275         int i;
 276
 277         for (; i = __ffs64(mask), mask && !sclass; mask &= ~(1ULL << i)) {
 278                 if (!(engine = nvkm_device_engine(device, i)) ||
 279                     !(engine->func->base.sclass))
 280                         continue;
 281                 oclass->engine = engine;
 282
 283                 index -= engine->func->base.sclass(oclass, index, &sclass);
 284         }
 285
 286         if (!sclass) {
 287                 switch (index) {
 288                 case 0: sclass = &nvkm_control_oclass; break;
 289                 default:
 290                         return -EINVAL;
 291                 }
 292                 oclass->base = sclass->base;
 293         }
 294
 295         oclass->ctor = nvkm_udevice_child_new;
 296         oclass->priv = sclass;
 297         return 0;
 298 }
 299
 300 static const struct nvkm_object_func
 301 nvkm_udevice_super = {
 302         .init = nvkm_udevice_init,
 303         .fini = nvkm_udevice_fini,
 304         .mthd = nvkm_udevice_mthd,
 305         .map = nvkm_udevice_map,
 306         .rd08 = nvkm_udevice_rd08,
 307         .rd16 = nvkm_udevice_rd16,
 308         .rd32 = nvkm_udevice_rd32,
 309         .wr08 = nvkm_udevice_wr08,
 310         .wr16 = nvkm_udevice_wr16,
 311         .wr32 = nvkm_udevice_wr32,
 312         .sclass = nvkm_udevice_child_get,
 313 };
 314
 315 static const struct nvkm_object_func
 316 nvkm_udevice = {
 317         .init = nvkm_udevice_init,
 318         .fini = nvkm_udevice_fini,
 319         .mthd = nvkm_udevice_mthd,
 320         .sclass = nvkm_udevice_child_get,
 321 };
 322
 323 int
 324 nvkm_udevice_new(const struct nvkm_oclass *oclass, void *data, u32 size,
 325                  struct nvkm_object **pobject)
 326 {
 327         union {
 328                 struct nv_device_v0 v0;
 329         } *args = data;
 330         struct nvkm_client *client = oclass->client;
 331         struct nvkm_object *parent = &client->object;
 332         const struct nvkm_object_func *func;
 333         struct nvkm_udevice *udev;
 334         int ret;
 335
 336         nvif_ioctl(parent, "create device size %d\n", size);
 337         if (nvif_unpack(args->v0, 0, 0, false)) {
 338                 nvif_ioctl(parent, "create device v%d device %016llx\n",
 339                            args->v0.version, args->v0.device);
 340         } else
 341                 return ret;
 342
 343         /* give priviledged clients register access */
 344         if (client->super)
 345                 func = &nvkm_udevice_super;
 346         else
 347                 func = &nvkm_udevice;
 348
 349         if (!(udev = kzalloc(sizeof(*udev), GFP_KERNEL)))
 350                 return -ENOMEM;
 351         nvkm_object_ctor(func, oclass, &udev->object);
 352         *pobject = &udev->object;
 353
 354         /* find the device that matches what the client requested */
 355         if (args->v0.device != ~0)
 356                 udev->device = nvkm_device_find(args->v0.device);
 357         else
 358                 udev->device = nvkm_device_find(client->device);
 359         if (!udev->device)
 360                 return -ENODEV;
 361
 362         return 0;
 363 }
 364
 365 const struct nvkm_sclass
 366 nvkm_udevice_sclass = {
 367         .oclass = NV_DEVICE,
 368         .minver = 0,
 369         .maxver = 0,
 370         .ctor = nvkm_udevice_new,
 371 };