cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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gm200.c (2593B)

      1/*
      2 * Copyright 2016 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 "priv.h"
     25
     26static int
     27gm200_pmu_flcn_reset(struct nvkm_falcon *falcon)
     28{
     29	struct nvkm_pmu *pmu = container_of(falcon, typeof(*pmu), falcon);
     30
     31	nvkm_falcon_wr32(falcon, 0x014, 0x0000ffff);
     32	pmu->func->reset(pmu);
     33	return nvkm_falcon_enable(falcon);
     34}
     35
     36const struct nvkm_falcon_func
     37gm200_pmu_flcn = {
     38	.debug = 0xc08,
     39	.fbif = 0xe00,
     40	.load_imem = nvkm_falcon_v1_load_imem,
     41	.load_dmem = nvkm_falcon_v1_load_dmem,
     42	.read_dmem = nvkm_falcon_v1_read_dmem,
     43	.bind_context = nvkm_falcon_v1_bind_context,
     44	.wait_for_halt = nvkm_falcon_v1_wait_for_halt,
     45	.clear_interrupt = nvkm_falcon_v1_clear_interrupt,
     46	.set_start_addr = nvkm_falcon_v1_set_start_addr,
     47	.start = nvkm_falcon_v1_start,
     48	.enable = nvkm_falcon_v1_enable,
     49	.disable = nvkm_falcon_v1_disable,
     50	.reset = gm200_pmu_flcn_reset,
     51	.cmdq = { 0x4a0, 0x4b0, 4 },
     52	.msgq = { 0x4c8, 0x4cc, 0 },
     53};
     54
     55static const struct nvkm_pmu_func
     56gm200_pmu = {
     57	.flcn = &gm200_pmu_flcn,
     58	.enabled = gf100_pmu_enabled,
     59	.reset = gf100_pmu_reset,
     60};
     61
     62
     63int
     64gm200_pmu_nofw(struct nvkm_pmu *pmu, int ver, const struct nvkm_pmu_fwif *fwif)
     65{
     66	nvkm_warn(&pmu->subdev, "firmware unavailable\n");
     67	return 0;
     68}
     69
     70static const struct nvkm_pmu_fwif
     71gm200_pmu_fwif[] = {
     72	{ -1, gm200_pmu_nofw, &gm200_pmu },
     73	{}
     74};
     75
     76int
     77gm200_pmu_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
     78	      struct nvkm_pmu **ppmu)
     79{
     80	return nvkm_pmu_new_(gm200_pmu_fwif, device, type, inst, ppmu);
     81}