drivers/gpu/drm/nouveau/nvkm/subdev/fb/gk20a.c

   1 /*
   2  * Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
   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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  19  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  20  * DEALINGS IN THE SOFTWARE.
  21  */
  22 #include "priv.h"
  23
  24 #include <core/memory.h>
  25
  26 static void
  27 gk20a_fb_init(struct nvkm_fb *fb)
  28 {
  29         struct nvkm_device *device = fb->subdev.device;
  30         nvkm_mask(device, 0x100c80, 0x00000001, 0x00000000); /* 128KiB lpg */
  31         nvkm_wr32(device, 0x100cc8, nvkm_memory_addr(fb->mmu_wr) >> 8);
  32         nvkm_wr32(device, 0x100ccc, nvkm_memory_addr(fb->mmu_rd) >> 8);
  33 }
  34
  35 static const struct nvkm_fb_func
  36 gk20a_fb = {
  37         .oneinit = gf100_fb_oneinit,
  38         .init = gk20a_fb_init,
  39         .memtype_valid = gf100_fb_memtype_valid,
  40 };
  41
  42 int
  43 gk20a_fb_new(struct nvkm_device *device, int index, struct nvkm_fb **pfb)
  44 {
  45         return nvkm_fb_new_(&gk20a_fb, device, index, pfb);
  46 }