cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

nvsw.c (2521B)

      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}