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 "nouveau_mem.h"
  23 #include "nouveau_drv.h"
  24 #include "nouveau_bo.h"
  25
  26 #include <subdev/ltc.h>
  27
  28 #include <drm/ttm/ttm_bo_driver.h>
  29
  30 int
  31 nouveau_mem_map(struct nouveau_mem *mem,
  32                 struct nvkm_vmm *vmm, struct nvkm_vma *vma)
  33 {
  34         nvkm_vm_map(vma, mem->_mem);
  35         return 0;
  36 }
  37
  38 void
  39 nouveau_mem_fini(struct nouveau_mem *mem)
  40 {
  41         if (mem->vma[1].node) {
  42                 nvkm_vm_unmap(&mem->vma[1]);
  43                 nvkm_vm_put(&mem->vma[1]);
  44         }
  45         if (mem->vma[0].node) {
  46                 nvkm_vm_unmap(&mem->vma[0]);
  47                 nvkm_vm_put(&mem->vma[0]);
  48         }
  49         nvkm_memory_tags_put(&mem->memory, nvxx_device(&mem->cli->device),
  50                              &mem->tags);
  51 }
  52
  53 int
  54 nouveau_mem_host(struct ttm_mem_reg *reg, struct ttm_dma_tt *tt)
  55 {
  56         struct nouveau_mem *mem = nouveau_mem(reg);
  57         struct nouveau_cli *cli = mem->cli;
  58
  59         if (mem->kind && cli->device.info.chipset == 0x50)
  60                 mem->comp = mem->kind = 0;
  61         if (mem->comp) {
  62                 if (cli->device.info.chipset >= 0xc0)
  63                         mem->kind = gf100_pte_storage_type_map[mem->kind];
  64                 mem->comp = 0;
  65         }
  66
  67         mem->__mem.size = (reg->num_pages << PAGE_SHIFT) >> 12;
  68         mem->__mem.memtype = (mem->comp << 7) | mem->kind;
  69         if (tt->ttm.sg) mem->__mem.sg    = tt->ttm.sg;
  70         else            mem->__mem.pages = tt->dma_address;
  71         mem->_mem = &mem->__mem;
  72         mem->mem.page = 12;
  73         mem->_mem->memory = &mem->memory;
  74         return 0;
  75 }
  76
  77 int
  78 nouveau_mem_vram(struct ttm_mem_reg *reg, bool contig, u8 page)
  79 {
  80         struct nouveau_mem *mem = nouveau_mem(reg);
  81         struct nouveau_cli *cli = mem->cli;
  82         struct nvkm_device *device = nvxx_device(&cli->device);
  83         struct nvkm_ram *ram = nvxx_fb(&cli->device)->ram;
  84         u64 size = ALIGN(reg->num_pages << PAGE_SHIFT, 1 << page);
  85         int ret;
  86
  87         mem->mem.page = page;
  88         mem->_mem->memory = &mem->memory;
  89
  90         if (cli->device.info.chipset < 0xc0 && mem->comp) {
  91                 if (page == 16) {
  92                         ret = nvkm_memory_tags_get(mem->_mem->memory, device,
  93                                                    size >> page, NULL,
  94                                                    &mem->tags);
  95                         WARN_ON(ret);
  96                 }
  97                 if (!mem->tags || !mem->tags->mn)
  98                         mem->comp = 0;
  99         } else
 100         if (cli->device.info.chipset >= 0xc0 &&
 101             gf100_pte_storage_type_map[mem->kind] != mem->kind) {
 102                 if (page == 17) {
 103                         ret = nvkm_memory_tags_get(mem->_mem->memory, device,
 104                                                    size >> page,
 105                                                    nvkm_ltc_tags_clear,
 106                                                    &mem->tags);
 107                         WARN_ON(ret);
 108                 }
 109                 if (!mem->tags || !mem->tags->mn)
 110                         mem->kind = gf100_pte_storage_type_map[mem->kind];
 111         }
 112
 113         ret = ram->func->get(ram, size, 1 << page, contig ? 0 : 1 << page,
 114                              (mem->comp << 8) | mem->kind, &mem->_mem);
 115         if (ret) {
 116                 nvkm_memory_tags_put(mem->_mem->memory, device, &mem->tags);
 117                 return ret;
 118         }
 119
 120         if (mem->tags && mem->tags->mn)
 121                 mem->_mem->tag = mem->tags->mn;
 122
 123         reg->start = mem->_mem->offset >> PAGE_SHIFT;
 124         return ret;
 125 }
 126
 127 void
 128 nouveau_mem_del(struct ttm_mem_reg *reg)
 129 {
 130         struct nouveau_mem *mem = nouveau_mem(reg);
 131         nouveau_mem_fini(mem);
 132         kfree(reg->mm_node);
 133         reg->mm_node = NULL;
 134 }
 135
 136 static enum nvkm_memory_target
 137 nouveau_mem_memory_target(struct nvkm_memory *memory)
 138 {
 139         struct nouveau_mem *mem = container_of(memory, typeof(*mem), memory);
 140         if (mem->_mem->mem)
 141                 return NVKM_MEM_TARGET_VRAM;
 142         return NVKM_MEM_TARGET_HOST;
 143 };
 144
 145 static u8
 146 nouveau_mem_memory_page(struct nvkm_memory *memory)
 147 {
 148         struct nouveau_mem *mem = container_of(memory, typeof(*mem), memory);
 149         return mem->mem.page;
 150 };
 151
 152 static u64
 153 nouveau_mem_memory_size(struct nvkm_memory *memory)
 154 {
 155         struct nouveau_mem *mem = container_of(memory, typeof(*mem), memory);
 156         return mem->_mem->size << 12;
 157 }
 158
 159 static const struct nvkm_memory_func
 160 nouveau_mem_memory = {
 161         .target = nouveau_mem_memory_target,
 162         .page = nouveau_mem_memory_page,
 163         .size = nouveau_mem_memory_size,
 164 };
 165
 166 int
 167 nouveau_mem_new(struct nouveau_cli *cli, u8 kind, u8 comp,
 168                 struct ttm_mem_reg *reg)
 169 {
 170         struct nouveau_mem *mem;
 171
 172         if (!(mem = kzalloc(sizeof(*mem), GFP_KERNEL)))
 173                 return -ENOMEM;
 174         mem->cli = cli;
 175         mem->kind = kind;
 176         mem->comp = comp;
 177         nvkm_memory_ctor(&nouveau_mem_memory, &mem->memory);
 178
 179         reg->mm_node = mem;
 180         return 0;
 181 }