LXR linux/drivers/gpu/drm/nouveau/nvkm/engine/sw/nvsw.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 "nvsw.h"
  25#include "chan.h"
  26
  27#include <nvif/if0004.h>
  28
  29static int
  30nvkm_nvsw_mthd_(struct nvkm_object *object, u32 mthd, void *data, u32 size)
  31{
  32        struct nvkm_nvsw *nvsw = nvkm_nvsw(object);
  33        if (nvsw->func->mthd)
  34                return nvsw->func->mthd(nvsw, mthd, data, size);
  35        return -ENODEV;
  36}
  37
  38static int
  39nvkm_nvsw_ntfy_(struct nvkm_object *object, u32 mthd,
  40                struct nvkm_event **pevent)
  41{
  42        struct nvkm_nvsw *nvsw = nvkm_nvsw(object);
  43        switch (mthd) {
  44        case NV04_NVSW_NTFY_UEVENT:
  45                *pevent = &nvsw->chan->event;
  46                return 0;
  47        default:
  48                break;
  49        }
  50        return -EINVAL;
  51}
  52
  53static const struct nvkm_object_func
  54nvkm_nvsw_ = {
  55        .mthd = nvkm_nvsw_mthd_,
  56        .ntfy = nvkm_nvsw_ntfy_,
  57};
  58
  59int
  60nvkm_nvsw_new_(const struct nvkm_nvsw_func *func, struct nvkm_sw_chan *chan,
  61               const struct nvkm_oclass *oclass, void *data, u32 size,
  62               struct nvkm_object **pobject)
  63{
  64        struct nvkm_nvsw *nvsw;
  65
  66        if (!(nvsw = kzalloc(sizeof(*nvsw), GFP_KERNEL)))
  67                return -ENOMEM;
  68        *pobject = &nvsw->object;
  69
  70        nvkm_object_ctor(&nvkm_nvsw_, oclass, &nvsw->object);
  71        nvsw->func = func;
  72        nvsw->chan = chan;
  73        return 0;
  74}
  75
  76static const struct nvkm_nvsw_func
  77nvkm_nvsw = {
  78};
  79
  80int
  81nvkm_nvsw_new(struct nvkm_sw_chan *chan, const struct nvkm_oclass *oclass,
  82              void *data, u32 size, struct nvkm_object **pobject)
  83{
  84        return nvkm_nvsw_new_(&nvkm_nvsw, chan, oclass, data, size, pobject);
  85}
  86