drivers/gpu/drm/nouveau/nvkm/subdev/mmu/gp100.c

   1 /*
   2  * Copyright 2017 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 #include "mem.h"
  23 #include "vmm.h"
  24
  25 #include <core/option.h>
  26
  27 #include <nvif/class.h>
  28
  29 static const struct nvkm_mmu_func
  30 gp100_mmu = {
  31         .limit = (1ULL << 49),
  32         .dma_bits = 47,
  33         .lpg_shift = 16,
  34         .mem = {{ -1,  0, NVIF_CLASS_MEM_GF100}, gf100_mem_new, gf100_mem_map },
  35         .vmm = {{ -1, -1, NVIF_CLASS_VMM_GP100}, gp100_vmm_new },
  36         .kind = gm200_mmu_kind,
  37         .kind_sys = true,
  38 };
  39
  40 int
  41 gp100_mmu_new(struct nvkm_device *device, int index, struct nvkm_mmu **pmmu)
  42 {
  43         if (!nvkm_boolopt(device->cfgopt, "GP100MmuLayout", true))
  44                 return gm200_mmu_new(device, index, pmmu);
  45         return nvkm_mmu_new_(&gp100_mmu, device, index, pmmu);
  46 }