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
  29 static int
  30 nvkm_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
  38 static int
  39 nvkm_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
  53 static const struct nvkm_object_func
  54 nvkm_nvsw_ = {
  55         .mthd = nvkm_nvsw_mthd_,
  56         .ntfy = nvkm_nvsw_ntfy_,
  57 };
  58
  59 int
  60 nvkm_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
  76 static const struct nvkm_nvsw_func
  77 nvkm_nvsw = {
  78 };
  79
  80 int
  81 nvkm_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 }