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