LXR linux/drivers/gpu/drm/nouveau/nv98

   1/*
   2 * Copyright 2011 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
  23 */
  24
  25#include "drmP.h"
  26#include "nouveau_drv.h"
  27#include "nouveau_util.h"
  28#include "nouveau_vm.h"
  29#include "nouveau_ramht.h"
  30
  31struct nv98_ppp_engine {
  32        struct nouveau_exec_engine base;
  33};
  34
  35static int
  36nv98_ppp_fini(struct drm_device *dev, int engine, bool suspend)
  37{
  38        if (!(nv_rd32(dev, 0x000200) & 0x00000002))
  39                return 0;
  40
  41        nv_mask(dev, 0x000200, 0x00000002, 0x00000000);
  42        return 0;
  43}
  44
  45static int
  46nv98_ppp_init(struct drm_device *dev, int engine)
  47{
  48        nv_mask(dev, 0x000200, 0x00000002, 0x00000000);
  49        nv_mask(dev, 0x000200, 0x00000002, 0x00000002);
  50        return 0;
  51}
  52
  53static void
  54nv98_ppp_destroy(struct drm_device *dev, int engine)
  55{
  56        struct nv98_ppp_engine *pppp = nv_engine(dev, engine);
  57
  58        NVOBJ_ENGINE_DEL(dev, PPP);
  59
  60        kfree(pppp);
  61}
  62
  63int
  64nv98_ppp_create(struct drm_device *dev)
  65{
  66        struct nv98_ppp_engine *pppp;
  67
  68        pppp = kzalloc(sizeof(*pppp), GFP_KERNEL);
  69        if (!pppp)
  70                return -ENOMEM;
  71
  72        pppp->base.destroy = nv98_ppp_destroy;
  73        pppp->base.init = nv98_ppp_init;
  74        pppp->base.fini = nv98_ppp_fini;
  75
  76        NVOBJ_ENGINE_ADD(dev, PPP, &pppp->base);
  77        return 0;
  78}
  79