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

user.c (3167B)

      1/*
      2 * Copyright 2018 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
     24#include <core/memory.h>
     25#include <subdev/mmu.h>
     26
     27#include <nvif/clb069.h>
     28#include <nvif/unpack.h>
     29
     30static int
     31nvkm_ufault_map(struct nvkm_object *object, void *argv, u32 argc,
     32		enum nvkm_object_map *type, u64 *addr, u64 *size)
     33{
     34	struct nvkm_fault_buffer *buffer = nvkm_fault_buffer(object);
     35	struct nvkm_device *device = buffer->fault->subdev.device;
     36	*type = NVKM_OBJECT_MAP_IO;
     37	*addr = device->func->resource_addr(device, 3) + buffer->addr;
     38	*size = nvkm_memory_size(buffer->mem);
     39	return 0;
     40}
     41
     42static int
     43nvkm_ufault_ntfy(struct nvkm_object *object, u32 type,
     44		 struct nvkm_event **pevent)
     45{
     46	struct nvkm_fault_buffer *buffer = nvkm_fault_buffer(object);
     47	if (type == NVB069_V0_NTFY_FAULT) {
     48		*pevent = &buffer->fault->event;
     49		return 0;
     50	}
     51	return -EINVAL;
     52}
     53
     54static int
     55nvkm_ufault_fini(struct nvkm_object *object, bool suspend)
     56{
     57	struct nvkm_fault_buffer *buffer = nvkm_fault_buffer(object);
     58	buffer->fault->func->buffer.fini(buffer);
     59	return 0;
     60}
     61
     62static int
     63nvkm_ufault_init(struct nvkm_object *object)
     64{
     65	struct nvkm_fault_buffer *buffer = nvkm_fault_buffer(object);
     66	buffer->fault->func->buffer.init(buffer);
     67	return 0;
     68}
     69
     70static void *
     71nvkm_ufault_dtor(struct nvkm_object *object)
     72{
     73	return NULL;
     74}
     75
     76static const struct nvkm_object_func
     77nvkm_ufault = {
     78	.dtor = nvkm_ufault_dtor,
     79	.init = nvkm_ufault_init,
     80	.fini = nvkm_ufault_fini,
     81	.ntfy = nvkm_ufault_ntfy,
     82	.map = nvkm_ufault_map,
     83};
     84
     85int
     86nvkm_ufault_new(struct nvkm_device *device, const struct nvkm_oclass *oclass,
     87		void *argv, u32 argc, struct nvkm_object **pobject)
     88{
     89	union {
     90		struct nvif_clb069_v0 v0;
     91	} *args = argv;
     92	struct nvkm_fault *fault = device->fault;
     93	struct nvkm_fault_buffer *buffer = fault->buffer[fault->func->user.rp];
     94	int ret = -ENOSYS;
     95
     96	if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) {
     97		args->v0.entries = buffer->entries;
     98		args->v0.get = buffer->get;
     99		args->v0.put = buffer->put;
    100	} else
    101		return ret;
    102
    103	nvkm_object_ctor(&nvkm_ufault, oclass, &buffer->object);
    104	*pobject = &buffer->object;
    105	return 0;
    106}