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

rootnv04.c (2848B)

      1/*
      2 * Copyright 2012 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
     23 */
     24#define nv04_disp_root(p) container_of((p), struct nv04_disp_root, object)
     25#include "priv.h"
     26#include "head.h"
     27
     28#include <core/client.h>
     29
     30#include <nvif/class.h>
     31#include <nvif/cl0046.h>
     32#include <nvif/unpack.h>
     33
     34struct nv04_disp_root {
     35	struct nvkm_object object;
     36	struct nvkm_disp *disp;
     37};
     38
     39static int
     40nv04_disp_mthd(struct nvkm_object *object, u32 mthd, void *data, u32 size)
     41{
     42	struct nv04_disp_root *root = nv04_disp_root(object);
     43	union {
     44		struct nv04_disp_mthd_v0 v0;
     45	} *args = data;
     46	struct nvkm_head *head;
     47	int id, ret = -ENOSYS;
     48
     49	nvif_ioctl(object, "disp mthd size %d\n", size);
     50	if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, true))) {
     51		nvif_ioctl(object, "disp mthd vers %d mthd %02x head %d\n",
     52			   args->v0.version, args->v0.method, args->v0.head);
     53		mthd = args->v0.method;
     54		id   = args->v0.head;
     55	} else
     56		return ret;
     57
     58	if (!(head = nvkm_head_find(root->disp, id)))
     59		return -ENXIO;
     60
     61	switch (mthd) {
     62	case NV04_DISP_SCANOUTPOS:
     63		return nvkm_head_mthd_scanoutpos(object, head, data, size);
     64	default:
     65		break;
     66	}
     67
     68	return -EINVAL;
     69}
     70
     71static const struct nvkm_object_func
     72nv04_disp_root = {
     73	.mthd = nv04_disp_mthd,
     74	.ntfy = nvkm_disp_ntfy,
     75};
     76
     77static int
     78nv04_disp_root_new(struct nvkm_disp *disp, const struct nvkm_oclass *oclass,
     79		   void *data, u32 size, struct nvkm_object **pobject)
     80{
     81	struct nv04_disp_root *root;
     82
     83	if (!(root = kzalloc(sizeof(*root), GFP_KERNEL)))
     84		return -ENOMEM;
     85	root->disp = disp;
     86	*pobject = &root->object;
     87
     88	nvkm_object_ctor(&nv04_disp_root, oclass, &root->object);
     89	return 0;
     90}
     91
     92const struct nvkm_disp_oclass
     93nv04_disp_root_oclass = {
     94	.base.oclass = NV04_DISP,
     95	.base.minver = -1,
     96	.base.maxver = -1,
     97	.ctor = nv04_disp_root_new,
     98};