LXR linux/drivers/gpu/drm/nouveau/nvkm/core/memory.c

   1/*
   2 * Copyright 2015 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 * Authors: Ben Skeggs <bskeggs@redhat.com>
  23 */
  24#include <core/memory.h>
  25#include <subdev/instmem.h>
  26
  27void
  28nvkm_memory_ctor(const struct nvkm_memory_func *func,
  29                 struct nvkm_memory *memory)
  30{
  31        memory->func = func;
  32}
  33
  34void
  35nvkm_memory_del(struct nvkm_memory **pmemory)
  36{
  37        struct nvkm_memory *memory = *pmemory;
  38        if (memory && !WARN_ON(!memory->func)) {
  39                if (memory->func->dtor)
  40                        *pmemory = memory->func->dtor(memory);
  41                kfree(*pmemory);
  42                *pmemory = NULL;
  43        }
  44}
  45
  46int
  47nvkm_memory_new(struct nvkm_device *device, enum nvkm_memory_target target,
  48                u64 size, u32 align, bool zero,
  49                struct nvkm_memory **pmemory)
  50{
  51        struct nvkm_instmem *imem = device->imem;
  52        struct nvkm_memory *memory;
  53        int ret = -ENOSYS;
  54
  55        if (unlikely(target != NVKM_MEM_TARGET_INST || !imem))
  56                return -ENOSYS;
  57
  58        ret = nvkm_instobj_new(imem, size, align, zero, &memory);
  59        if (ret)
  60                return ret;
  61
  62        *pmemory = memory;
  63        return 0;
  64}
  65