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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nv04.c (1787B)

      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#include "priv.h"
     25#include "ram.h"
     26#include "regsnv04.h"
     27
     28static void
     29nv04_fb_init(struct nvkm_fb *fb)
     30{
     31	struct nvkm_device *device = fb->subdev.device;
     32
     33	/* This is what the DDX did for NV_ARCH_04, but a mmio-trace shows
     34	 * nvidia reading PFB_CFG_0, then writing back its original value.
     35	 * (which was 0x701114 in this case)
     36	 */
     37	nvkm_wr32(device, NV04_PFB_CFG0, 0x1114);
     38}
     39
     40static const struct nvkm_fb_func
     41nv04_fb = {
     42	.init = nv04_fb_init,
     43	.ram_new = nv04_ram_new,
     44};
     45
     46int
     47nv04_fb_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb)
     48{
     49	return nvkm_fb_new_(&nv04_fb, device, type, inst, pfb);
     50}