drivers/gpu/drm/nouveau/nouveau_mem.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 <drm/ttm/ttm_tt.h>
  23
  24 #include "nouveau_mem.h"
  25 #include "nouveau_drv.h"
  26 #include "nouveau_bo.h"
  27
  28
  29 #include <nvif/class.h>
  30 #include <nvif/if000a.h>
  31 #include <nvif/if500b.h>
  32 #include <nvif/if500d.h>
  33 #include <nvif/if900b.h>
  34 #include <nvif/if900d.h>
  35
  36 int
  37 nouveau_mem_map(struct nouveau_mem *mem,
  38                 struct nvif_vmm *vmm, struct nvif_vma *vma)
  39 {
  40         union {
  41                 struct nv50_vmm_map_v0 nv50;
  42                 struct gf100_vmm_map_v0 gf100;
  43         } args;
  44         u32 argc = 0;
  45
  46         switch (vmm->object.oclass) {
  47         case NVIF_CLASS_VMM_NV04:
  48                 break;
  49         case NVIF_CLASS_VMM_NV50:
  50                 args.nv50.version = 0;
  51                 args.nv50.ro = 0;
  52                 args.nv50.priv = 0;
  53                 args.nv50.kind = mem->kind;
  54                 args.nv50.comp = mem->comp;
  55                 argc = sizeof(args.nv50);
  56                 break;
  57         case NVIF_CLASS_VMM_GF100:
  58         case NVIF_CLASS_VMM_GM200:
  59         case NVIF_CLASS_VMM_GP100:
  60                 args.gf100.version = 0;
  61                 if (mem->mem.type & NVIF_MEM_VRAM)
  62                         args.gf100.vol = 0;
  63                 else
  64                         args.gf100.vol = 1;
  65                 args.gf100.ro = 0;
  66                 args.gf100.priv = 0;
  67                 args.gf100.kind = mem->kind;
  68                 argc = sizeof(args.gf100);
  69                 break;
  70         default:
  71                 WARN_ON(1);
  72                 return -ENOSYS;
  73         }
  74
  75         return nvif_vmm_map(vmm, vma->addr, mem->mem.size, &args, argc, &mem->mem, 0);
  76 }
  77
  78 void
  79 nouveau_mem_fini(struct nouveau_mem *mem)
  80 {
  81         nvif_vmm_put(&mem->cli->drm->client.vmm.vmm, &mem->vma[1]);
  82         nvif_vmm_put(&mem->cli->drm->client.vmm.vmm, &mem->vma[0]);
  83         mutex_lock(&mem->cli->drm->master.lock);
  84         nvif_mem_dtor(&mem->mem);
  85         mutex_unlock(&mem->cli->drm->master.lock);
  86 }
  87
  88 int
  89 nouveau_mem_host(struct ttm_resource *reg, struct ttm_tt *tt)
  90 {
  91         struct nouveau_mem *mem = nouveau_mem(reg);
  92         struct nouveau_cli *cli = mem->cli;
  93         struct nouveau_drm *drm = cli->drm;
  94         struct nvif_mmu *mmu = &cli->mmu;
  95         struct nvif_mem_ram_v0 args = {};
  96         u8 type;
  97         int ret;
  98
  99         if (!nouveau_drm_use_coherent_gpu_mapping(drm))
 100                 type = drm->ttm.type_ncoh[!!mem->kind];
 101         else
 102                 type = drm->ttm.type_host[0];
 103
 104         if (mem->kind && !(mmu->type[type].type & NVIF_MEM_KIND))
 105                 mem->comp = mem->kind = 0;
 106         if (mem->comp && !(mmu->type[type].type & NVIF_MEM_COMP)) {
 107                 if (mmu->object.oclass >= NVIF_CLASS_MMU_GF100)
 108                         mem->kind = mmu->kind[mem->kind];
 109                 mem->comp = 0;
 110         }
 111
 112         if (tt->sg)
 113                 args.sgl = tt->sg->sgl;
 114         else
 115                 args.dma = tt->dma_address;
 116
 117         mutex_lock(&drm->master.lock);
 118         ret = nvif_mem_ctor_type(mmu, "ttmHostMem", cli->mem->oclass, type, PAGE_SHIFT,
 119                                  reg->size,
 120                                  &args, sizeof(args), &mem->mem);
 121         mutex_unlock(&drm->master.lock);
 122         return ret;
 123 }
 124
 125 int
 126 nouveau_mem_vram(struct ttm_resource *reg, bool contig, u8 page)
 127 {
 128         struct nouveau_mem *mem = nouveau_mem(reg);
 129         struct nouveau_cli *cli = mem->cli;
 130         struct nouveau_drm *drm = cli->drm;
 131         struct nvif_mmu *mmu = &cli->mmu;
 132         u64 size = ALIGN(reg->size, 1 << page);
 133         int ret;
 134
 135         mutex_lock(&drm->master.lock);
 136         switch (cli->mem->oclass) {
 137         case NVIF_CLASS_MEM_GF100:
 138                 ret = nvif_mem_ctor_type(mmu, "ttmVram", cli->mem->oclass,
 139                                          drm->ttm.type_vram, page, size,
 140                                          &(struct gf100_mem_v0) {
 141                                                 .contig = contig,
 142                                          }, sizeof(struct gf100_mem_v0),
 143                                          &mem->mem);
 144                 break;
 145         case NVIF_CLASS_MEM_NV50:
 146                 ret = nvif_mem_ctor_type(mmu, "ttmVram", cli->mem->oclass,
 147                                          drm->ttm.type_vram, page, size,
 148                                          &(struct nv50_mem_v0) {
 149                                                 .bankswz = mmu->kind[mem->kind] == 2,
 150                                                 .contig = contig,
 151                                          }, sizeof(struct nv50_mem_v0),
 152                                          &mem->mem);
 153                 break;
 154         default:
 155                 ret = -ENOSYS;
 156                 WARN_ON(1);
 157                 break;
 158         }
 159         mutex_unlock(&drm->master.lock);
 160
 161         reg->start = mem->mem.addr >> PAGE_SHIFT;
 162         return ret;
 163 }
 164
 165 void
 166 nouveau_mem_del(struct ttm_resource_manager *man, struct ttm_resource *reg)
 167 {
 168         struct nouveau_mem *mem = nouveau_mem(reg);
 169
 170         nouveau_mem_fini(mem);
 171         ttm_resource_fini(man, reg);
 172         kfree(mem);
 173 }
 174
 175 int
 176 nouveau_mem_new(struct nouveau_cli *cli, u8 kind, u8 comp,
 177                 struct ttm_resource **res)
 178 {
 179         struct nouveau_mem *mem;
 180
 181         if (!(mem = kzalloc(sizeof(*mem), GFP_KERNEL)))
 182                 return -ENOMEM;
 183
 184         mem->cli = cli;
 185         mem->kind = kind;
 186         mem->comp = comp;
 187
 188         *res = &mem->base;
 189         return 0;
 190 }
 191
 192 bool
 193 nouveau_mem_intersects(struct ttm_resource *res,
 194                        const struct ttm_place *place,
 195                        size_t size)
 196 {
 197         u32 num_pages = PFN_UP(size);
 198
 199         /* Don't evict BOs outside of the requested placement range */
 200         if (place->fpfn >= (res->start + num_pages) ||
 201             (place->lpfn && place->lpfn <= res->start))
 202                 return false;
 203
 204         return true;
 205 }
 206
 207 bool
 208 nouveau_mem_compatible(struct ttm_resource *res,
 209                        const struct ttm_place *place,
 210                        size_t size)
 211 {
 212         u32 num_pages = PFN_UP(size);
 213
 214         if (res->start < place->fpfn ||
 215             (place->lpfn && (res->start + num_pages) > place->lpfn))
 216                 return false;
 217
 218         return true;
 219 }