LXR linux/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/memnv04.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
  24#include <core/memory.h>
  25#include <subdev/fb.h>
  26
  27#include <nvif/if000b.h>
  28#include <nvif/unpack.h>
  29
  30int
  31nv04_mem_map(struct nvkm_mmu *mmu, struct nvkm_memory *memory, void *argv,
  32             u32 argc, u64 *paddr, u64 *psize, struct nvkm_vma **pvma)
  33{
  34        union {
  35                struct nv04_mem_map_vn vn;
  36        } *args = argv;
  37        struct nvkm_device *device = mmu->subdev.device;
  38        const u64 addr = nvkm_memory_addr(memory);
  39        int ret = -ENOSYS;
  40
  41        if ((ret = nvif_unvers(ret, &argv, &argc, args->vn)))
  42                return ret;
  43
  44        *paddr = device->func->resource_addr(device, 1) + addr;
  45        *psize = nvkm_memory_size(memory);
  46        *pvma = ERR_PTR(-ENODEV);
  47        return 0;
  48}
  49
  50int
  51nv04_mem_new(struct nvkm_mmu *mmu, int type, u8 page, u64 size,
  52             void *argv, u32 argc, struct nvkm_memory **pmemory)
  53{
  54        union {
  55                struct nv04_mem_vn vn;
  56        } *args = argv;
  57        int ret = -ENOSYS;
  58
  59        if ((ret = nvif_unvers(ret, &argv, &argc, args->vn)))
  60                return ret;
  61
  62        if (mmu->type[type].type & NVKM_MEM_MAPPABLE)
  63                type = NVKM_RAM_MM_NORMAL;
  64        else
  65                type = NVKM_RAM_MM_NOMAP;
  66
  67        return nvkm_ram_get(mmu->subdev.device, type, 0x01, page,
  68                            size, true, false, pmemory);
  69}
  70