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

ga100.c (2360B)

      1/*
      2 * Copyright 2021 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#include "priv.h"
     23
     24static void
     25ga100_mc_intr_unarm(struct nvkm_mc *mc)
     26{
     27	nvkm_wr32(mc->subdev.device, 0xb81610, 0x00000004);
     28}
     29
     30static void
     31ga100_mc_intr_rearm(struct nvkm_mc *mc)
     32{
     33	nvkm_wr32(mc->subdev.device, 0xb81608, 0x00000004);
     34}
     35
     36static void
     37ga100_mc_intr_mask(struct nvkm_mc *mc, u32 mask, u32 intr)
     38{
     39	nvkm_wr32(mc->subdev.device, 0xb81210,          mask & intr );
     40	nvkm_wr32(mc->subdev.device, 0xb81410, mask & ~(mask & intr));
     41}
     42
     43static u32
     44ga100_mc_intr_stat(struct nvkm_mc *mc)
     45{
     46	u32 intr_top = nvkm_rd32(mc->subdev.device, 0xb81600), intr = 0x00000000;
     47	if (intr_top & 0x00000004)
     48		intr = nvkm_mask(mc->subdev.device, 0xb81010, 0x00000000, 0x00000000);
     49	return intr;
     50}
     51
     52static void
     53ga100_mc_init(struct nvkm_mc *mc)
     54{
     55	nv50_mc_init(mc);
     56	nvkm_wr32(mc->subdev.device, 0xb81210, 0xffffffff);
     57}
     58
     59static const struct nvkm_mc_func
     60ga100_mc = {
     61	.init = ga100_mc_init,
     62	.intr = gp100_mc_intr,
     63	.intr_unarm = ga100_mc_intr_unarm,
     64	.intr_rearm = ga100_mc_intr_rearm,
     65	.intr_mask = ga100_mc_intr_mask,
     66	.intr_stat = ga100_mc_intr_stat,
     67	.reset = gk104_mc_reset,
     68};
     69
     70int
     71ga100_mc_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_mc **pmc)
     72{
     73	return nvkm_mc_new_(&ga100_mc, device, type, inst, pmc);
     74}