LXR linux/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/nv41.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 "mem.h"
  25#include "vmm.h"
  26
  27#include <core/option.h>
  28
  29#include <nvif/class.h>
  30
  31static void
  32nv41_mmu_init(struct nvkm_mmu *mmu)
  33{
  34        struct nvkm_device *device = mmu->subdev.device;
  35        nvkm_wr32(device, 0x100800, 0x00000002 | mmu->vmm->pd->pt[0]->addr);
  36        nvkm_mask(device, 0x10008c, 0x00000100, 0x00000100);
  37        nvkm_wr32(device, 0x100820, 0x00000000);
  38}
  39
  40static const struct nvkm_mmu_func
  41nv41_mmu = {
  42        .init = nv41_mmu_init,
  43        .dma_bits = 39,
  44        .mmu = {{ -1, -1, NVIF_CLASS_MMU_NV04}},
  45        .mem = {{ -1, -1, NVIF_CLASS_MEM_NV04}, nv04_mem_new, nv04_mem_map },
  46        .vmm = {{ -1, -1, NVIF_CLASS_VMM_NV04}, nv41_vmm_new, true },
  47};
  48
  49int
  50nv41_mmu_new(struct nvkm_device *device, int index, struct nvkm_mmu **pmmu)
  51{
  52        if (device->type == NVKM_DEVICE_AGP ||
  53            !nvkm_boolopt(device->cfgopt, "NvPCIE", true))
  54                return nv04_mmu_new(device, index, pmmu);
  55
  56        return nvkm_mmu_new_(&nv41_mmu, device, index, pmmu);
  57}
  58