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/cl0080.h>
  35 #include <nvif/unpack.h>
  36
  37 struct nvkm_udevice {
  38         struct nvkm_object object;
  39         struct nvkm_device *device;
  40 };
  41
  42 static int
  43 nvkm_udevice_info(struct nvkm_udevice *udev, void *data, u32 size)
  44 {
  45         struct nvkm_object *object = &udev->object;
  46         struct nvkm_device *device = udev->device;
  47         struct nvkm_fb *fb = device->fb;
  48         struct nvkm_instmem *imem = device->imem;
  49         union {
  50                 struct nv_device_info_v0 v0;
  51         } *args = data;
  52         int ret = -ENOSYS;
  53
  54         nvif_ioctl(object, "device info size %d\n", size);
  55         if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, false))) {
  56                 nvif_ioctl(object, "device info vers %d\n", args->v0.version);
  57         } else
  58                 return ret;
  59
  60         switch (device->chipset) {
  61         case 0x01a:
  62         case 0x01f:
  63         case 0x04c:
  64         case 0x04e:
  65         case 0x063:
  66         case 0x067:
  67         case 0x068:
  68         case 0x0aa:
  69         case 0x0ac:
  70         case 0x0af:
  71                 args->v0.platform = NV_DEVICE_INFO_V0_IGP;
  72                 break;
  73         default:
  74                 switch (device->type) {
  75                 case NVKM_DEVICE_PCI:
  76                         args->v0.platform = NV_DEVICE_INFO_V0_PCI;
  77                         break;
  78                 case NVKM_DEVICE_AGP:
  79                         args->v0.platform = NV_DEVICE_INFO_V0_AGP;
  80                         break;
  81                 case NVKM_DEVICE_PCIE:
  82                         args->v0.platform = NV_DEVICE_INFO_V0_PCIE;
  83                         break;
  84                 case NVKM_DEVICE_TEGRA:
  85                         args->v0.platform = NV_DEVICE_INFO_V0_SOC;
  86                         break;
  87                 default:
  88                         WARN_ON(1);
  89                         break;
  90                 }
  91                 break;
  92         }
  93
  94         switch (device->card_type) {
  95         case NV_04: args->v0.family = NV_DEVICE_INFO_V0_TNT; break;
  96         case NV_10:
  97         case NV_11: args->v0.family = NV_DEVICE_INFO_V0_CELSIUS; break;
  98         case NV_20: args->v0.family = NV_DEVICE_INFO_V0_KELVIN; break;
  99         case NV_30: args->v0.family = NV_DEVICE_INFO_V0_RANKINE; break;
 100         case NV_40: args->v0.family = NV_DEVICE_INFO_V0_CURIE; break;
 101         case NV_50: args->v0.family = NV_DEVICE_INFO_V0_TESLA; break;
 102         case NV_C0: args->v0.family = NV_DEVICE_INFO_V0_FERMI; break;
 103         case NV_E0: args->v0.family = NV_DEVICE_INFO_V0_KEPLER; break;
 104         case GM100: args->v0.family = NV_DEVICE_INFO_V0_MAXWELL; break;
 105         case GP100: args->v0.family = NV_DEVICE_INFO_V0_PASCAL; break;
 106         default:
 107                 args->v0.family = 0;
 108                 break;
 109         }
 110
 111         args->v0.chipset  = device->chipset;
 112         args->v0.revision = device->chiprev;
 113         if (fb && fb->ram)
 114                 args->v0.ram_size = args->v0.ram_user = fb->ram->size;
 115         else
 116                 args->v0.ram_size = args->v0.ram_user = 0;
 117         if (imem && args->v0.ram_size > 0)
 118                 args->v0.ram_user = args->v0.ram_user - imem->reserved;
 119
 120         strncpy(args->v0.chip, device->chip->name, sizeof(args->v0.chip));
 121         strncpy(args->v0.name, device->name, sizeof(args->v0.name));
 122         return 0;
 123 }
 124
 125 static int
 126 nvkm_udevice_time(struct nvkm_udevice *udev, void *data, u32 size)
 127 {
 128         struct nvkm_object *object = &udev->object;
 129         struct nvkm_device *device = udev->device;
 130         union {
 131                 struct nv_device_time_v0 v0;
 132         } *args = data;
 133         int ret = -ENOSYS;
 134
 135         nvif_ioctl(object, "device time size %d\n", size);
 136         if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, false))) {
 137                 nvif_ioctl(object, "device time vers %d\n", args->v0.version);
 138                 args->v0.time = nvkm_timer_read(device->timer);
 139         }
 140
 141         return ret;
 142 }
 143
 144 static int
 145 nvkm_udevice_mthd(struct nvkm_object *object, u32 mthd, void *data, u32 size)
 146 {
 147         struct nvkm_udevice *udev = nvkm_udevice(object);
 148         nvif_ioctl(object, "device mthd %08x\n", mthd);
 149         switch (mthd) {
 150         case NV_DEVICE_V0_INFO:
 151                 return nvkm_udevice_info(udev, data, size);
 152         case NV_DEVICE_V0_TIME:
 153                 return nvkm_udevice_time(udev, data, size);
 154         default:
 155                 break;
 156         }
 157         return -EINVAL;
 158 }
 159
 160 static int
 161 nvkm_udevice_rd08(struct nvkm_object *object, u64 addr, u8 *data)
 162 {
 163         struct nvkm_udevice *udev = nvkm_udevice(object);
 164         *data = nvkm_rd08(udev->device, addr);
 165         return 0;
 166 }
 167
 168 static int
 169 nvkm_udevice_rd16(struct nvkm_object *object, u64 addr, u16 *data)
 170 {
 171         struct nvkm_udevice *udev = nvkm_udevice(object);
 172         *data = nvkm_rd16(udev->device, addr);
 173         return 0;
 174 }
 175
 176 static int
 177 nvkm_udevice_rd32(struct nvkm_object *object, u64 addr, u32 *data)
 178 {
 179         struct nvkm_udevice *udev = nvkm_udevice(object);
 180         *data = nvkm_rd32(udev->device, addr);
 181         return 0;
 182 }
 183
 184 static int
 185 nvkm_udevice_wr08(struct nvkm_object *object, u64 addr, u8 data)
 186 {
 187         struct nvkm_udevice *udev = nvkm_udevice(object);
 188         nvkm_wr08(udev->device, addr, data);
 189         return 0;
 190 }
 191
 192 static int
 193 nvkm_udevice_wr16(struct nvkm_object *object, u64 addr, u16 data)
 194 {
 195         struct nvkm_udevice *udev = nvkm_udevice(object);
 196         nvkm_wr16(udev->device, addr, data);
 197         return 0;
 198 }
 199
 200 static int
 201 nvkm_udevice_wr32(struct nvkm_object *object, u64 addr, u32 data)
 202 {
 203         struct nvkm_udevice *udev = nvkm_udevice(object);
 204         nvkm_wr32(udev->device, addr, data);
 205         return 0;
 206 }
 207
 208 static int
 209 nvkm_udevice_map(struct nvkm_object *object, u64 *addr, u32 *size)
 210 {
 211         struct nvkm_udevice *udev = nvkm_udevice(object);
 212         struct nvkm_device *device = udev->device;
 213         *addr = device->func->resource_addr(device, 0);
 214         *size = device->func->resource_size(device, 0);
 215         return 0;
 216 }
 217
 218 static int
 219 nvkm_udevice_fini(struct nvkm_object *object, bool suspend)
 220 {
 221         struct nvkm_udevice *udev = nvkm_udevice(object);
 222         struct nvkm_device *device = udev->device;
 223         int ret = 0;
 224
 225         mutex_lock(&device->mutex);
 226         if (!--device->refcount) {
 227                 ret = nvkm_device_fini(device, suspend);
 228                 if (ret && suspend) {
 229                         device->refcount++;
 230                         goto done;
 231                 }
 232         }
 233
 234 done:
 235         mutex_unlock(&device->mutex);
 236         return ret;
 237 }
 238
 239 static int
 240 nvkm_udevice_init(struct nvkm_object *object)
 241 {
 242         struct nvkm_udevice *udev = nvkm_udevice(object);
 243         struct nvkm_device *device = udev->device;
 244         int ret = 0;
 245
 246         mutex_lock(&device->mutex);
 247         if (!device->refcount++) {
 248                 ret = nvkm_device_init(device);
 249                 if (ret) {
 250                         device->refcount--;
 251                         goto done;
 252                 }
 253         }
 254
 255 done:
 256         mutex_unlock(&device->mutex);
 257         return ret;
 258 }
 259
 260 static int
 261 nvkm_udevice_child_new(const struct nvkm_oclass *oclass,
 262                        void *data, u32 size, struct nvkm_object **pobject)
 263 {
 264         struct nvkm_udevice *udev = nvkm_udevice(oclass->parent);
 265         const struct nvkm_device_oclass *sclass = oclass->priv;
 266         return sclass->ctor(udev->device, oclass, data, size, pobject);
 267 }
 268
 269 static int
 270 nvkm_udevice_child_get(struct nvkm_object *object, int index,
 271                        struct nvkm_oclass *oclass)
 272 {
 273         struct nvkm_udevice *udev = nvkm_udevice(object);
 274         struct nvkm_device *device = udev->device;
 275         struct nvkm_engine *engine;
 276         u64 mask = (1ULL << NVKM_ENGINE_DMAOBJ) |
 277                    (1ULL << NVKM_ENGINE_FIFO) |
 278                    (1ULL << NVKM_ENGINE_DISP) |
 279                    (1ULL << NVKM_ENGINE_PM);
 280         const struct nvkm_device_oclass *sclass = NULL;
 281         int i;
 282
 283         for (; i = __ffs64(mask), mask && !sclass; mask &= ~(1ULL << i)) {
 284                 if (!(engine = nvkm_device_engine(device, i)) ||
 285                     !(engine->func->base.sclass))
 286                         continue;
 287                 oclass->engine = engine;
 288
 289                 index -= engine->func->base.sclass(oclass, index, &sclass);
 290         }
 291
 292         if (!sclass) {
 293                 switch (index) {
 294                 case 0: sclass = &nvkm_control_oclass; break;
 295                 default:
 296                         return -EINVAL;
 297                 }
 298                 oclass->base = sclass->base;
 299         }
 300
 301         oclass->ctor = nvkm_udevice_child_new;
 302         oclass->priv = sclass;
 303         return 0;
 304 }
 305
 306 static const struct nvkm_object_func
 307 nvkm_udevice_super = {
 308         .init = nvkm_udevice_init,
 309         .fini = nvkm_udevice_fini,
 310         .mthd = nvkm_udevice_mthd,
 311         .map = nvkm_udevice_map,
 312         .rd08 = nvkm_udevice_rd08,
 313         .rd16 = nvkm_udevice_rd16,
 314         .rd32 = nvkm_udevice_rd32,
 315         .wr08 = nvkm_udevice_wr08,
 316         .wr16 = nvkm_udevice_wr16,
 317         .wr32 = nvkm_udevice_wr32,
 318         .sclass = nvkm_udevice_child_get,
 319 };
 320
 321 static const struct nvkm_object_func
 322 nvkm_udevice = {
 323         .init = nvkm_udevice_init,
 324         .fini = nvkm_udevice_fini,
 325         .mthd = nvkm_udevice_mthd,
 326         .sclass = nvkm_udevice_child_get,
 327 };
 328
 329 int
 330 nvkm_udevice_new(const struct nvkm_oclass *oclass, void *data, u32 size,
 331                  struct nvkm_object **pobject)
 332 {
 333         union {
 334                 struct nv_device_v0 v0;
 335         } *args = data;
 336         struct nvkm_client *client = oclass->client;
 337         struct nvkm_object *parent = &client->object;
 338         const struct nvkm_object_func *func;
 339         struct nvkm_udevice *udev;
 340         int ret = -ENOSYS;
 341
 342         nvif_ioctl(parent, "create device size %d\n", size);
 343         if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, false))) {
 344                 nvif_ioctl(parent, "create device v%d device %016llx\n",
 345                            args->v0.version, args->v0.device);
 346         } else
 347                 return ret;
 348
 349         /* give priviledged clients register access */
 350         if (client->super)
 351                 func = &nvkm_udevice_super;
 352         else
 353                 func = &nvkm_udevice;
 354
 355         if (!(udev = kzalloc(sizeof(*udev), GFP_KERNEL)))
 356                 return -ENOMEM;
 357         nvkm_object_ctor(func, oclass, &udev->object);
 358         *pobject = &udev->object;
 359
 360         /* find the device that matches what the client requested */
 361         if (args->v0.device != ~0)
 362                 udev->device = nvkm_device_find(args->v0.device);
 363         else
 364                 udev->device = nvkm_device_find(client->device);
 365         if (!udev->device)
 366                 return -ENODEV;
 367
 368         return 0;
 369 }
 370
 371 const struct nvkm_sclass
 372 nvkm_udevice_sclass = {
 373         .oclass = NV_DEVICE,
 374         .minver = 0,
 375         .maxver = 0,
 376         .ctor = nvkm_udevice_new,
 377 };