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

ior.c (2143B)

      1/*
      2 * Copyright 2017 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 "ior.h"
     25
     26static const char *
     27nvkm_ior_name[] = {
     28	[DAC] = "DAC",
     29	[SOR] = "SOR",
     30	[PIOR] = "PIOR",
     31};
     32
     33struct nvkm_ior *
     34nvkm_ior_find(struct nvkm_disp *disp, enum nvkm_ior_type type, int id)
     35{
     36	struct nvkm_ior *ior;
     37	list_for_each_entry(ior, &disp->ior, head) {
     38		if (ior->type == type && (id < 0 || ior->id == id))
     39			return ior;
     40	}
     41	return NULL;
     42}
     43
     44void
     45nvkm_ior_del(struct nvkm_ior **pior)
     46{
     47	struct nvkm_ior *ior = *pior;
     48	if (ior) {
     49		IOR_DBG(ior, "dtor");
     50		list_del(&ior->head);
     51		kfree(*pior);
     52		*pior = NULL;
     53	}
     54}
     55
     56int
     57nvkm_ior_new_(const struct nvkm_ior_func *func, struct nvkm_disp *disp,
     58	      enum nvkm_ior_type type, int id)
     59{
     60	struct nvkm_ior *ior;
     61	if (!(ior = kzalloc(sizeof(*ior), GFP_KERNEL)))
     62		return -ENOMEM;
     63	ior->func = func;
     64	ior->disp = disp;
     65	ior->type = type;
     66	ior->id = id;
     67	snprintf(ior->name, sizeof(ior->name), "%s-%d",
     68		 nvkm_ior_name[ior->type], ior->id);
     69	list_add_tail(&ior->head, &disp->ior);
     70	IOR_DBG(ior, "ctor");
     71	return 0;
     72}