LXR linux/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/memnv50.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/bar.h>
  26#include <subdev/fb.h>
  27
  28#include <nvif/class.h>
  29#include <nvif/if500b.h>
  30#include <nvif/if500d.h>
  31#include <nvif/unpack.h>
  32
  33int
  34nv50_mem_map(struct nvkm_mmu *mmu, struct nvkm_memory *memory, void *argv,
  35             u32 argc, u64 *paddr, u64 *psize, struct nvkm_vma **pvma)
  36{
  37        struct nv50_vmm_map_v0 uvmm = {};
  38        union {
  39                struct nv50_mem_map_vn vn;
  40                struct nv50_mem_map_v0 v0;
  41        } *args = argv;
  42        struct nvkm_device *device = mmu->subdev.device;
  43        struct nvkm_vmm *bar = nvkm_bar_bar1_vmm(device);
  44        u64 size = nvkm_memory_size(memory);
  45        int ret = -ENOSYS;
  46
  47        if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) {
  48                uvmm.ro   = args->v0.ro;
  49                uvmm.kind = args->v0.kind;
  50                uvmm.comp = args->v0.comp;
  51        } else
  52        if (!(ret = nvif_unvers(ret, &argv, &argc, args->vn))) {
  53        } else
  54                return ret;
  55
  56        ret = nvkm_vmm_get(bar, 12, size, pvma);
  57        if (ret)
  58                return ret;
  59
  60        *paddr = device->func->resource_addr(device, 1) + (*pvma)->addr;
  61        *psize = (*pvma)->size;
  62        return nvkm_memory_map(memory, 0, bar, *pvma, &uvmm, sizeof(uvmm));
  63}
  64
  65int
  66nv50_mem_new(struct nvkm_mmu *mmu, int type, u8 page, u64 size,
  67             void *argv, u32 argc, struct nvkm_memory **pmemory)
  68{
  69        union {
  70                struct nv50_mem_vn vn;
  71                struct nv50_mem_v0 v0;
  72        } *args = argv;
  73        int ret = -ENOSYS;
  74        bool contig;
  75
  76        if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) {
  77                type   = args->v0.bankswz ? 0x02 : 0x01;
  78                contig = args->v0.contig;
  79        } else
  80        if (!(ret = nvif_unvers(ret, &argv, &argc, args->vn))) {
  81                type   = 0x01;
  82                contig = false;
  83        } else
  84                return -ENOSYS;
  85
  86        return nvkm_ram_get(mmu->subdev.device, NVKM_RAM_MM_NORMAL, type,
  87                            page, size, contig, false, pmemory);
  88}
  89