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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gp100.c (2662B)

      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 "gf100.h"
     25#include "ram.h"
     26
     27#include <core/memory.h>
     28
     29void
     30gp100_fb_init_unkn(struct nvkm_fb *base)
     31{
     32	struct nvkm_device *device = gf100_fb(base)->base.subdev.device;
     33	nvkm_wr32(device, 0x1fac80, nvkm_rd32(device, 0x100c80));
     34	nvkm_wr32(device, 0x1facc4, nvkm_rd32(device, 0x100cc4));
     35	nvkm_wr32(device, 0x1facc8, nvkm_rd32(device, 0x100cc8));
     36	nvkm_wr32(device, 0x1faccc, nvkm_rd32(device, 0x100ccc));
     37}
     38
     39void
     40gp100_fb_init_remapper(struct nvkm_fb *fb)
     41{
     42	struct nvkm_device *device = fb->subdev.device;
     43	/* Disable address remapper. */
     44	nvkm_mask(device, 0x100c14, 0x00040000, 0x00000000);
     45}
     46
     47void
     48gp100_fb_init(struct nvkm_fb *base)
     49{
     50	struct gf100_fb *fb = gf100_fb(base);
     51	struct nvkm_device *device = fb->base.subdev.device;
     52
     53	if (fb->r100c10_page)
     54		nvkm_wr32(device, 0x100c10, fb->r100c10 >> 8);
     55
     56	nvkm_wr32(device, 0x100cc8, nvkm_memory_addr(fb->base.mmu_wr) >> 8);
     57	nvkm_wr32(device, 0x100ccc, nvkm_memory_addr(fb->base.mmu_rd) >> 8);
     58	nvkm_mask(device, 0x100cc4, 0x00060000,
     59		  min(nvkm_memory_size(fb->base.mmu_rd) >> 16, (u64)2) << 17);
     60}
     61
     62static const struct nvkm_fb_func
     63gp100_fb = {
     64	.dtor = gf100_fb_dtor,
     65	.oneinit = gf100_fb_oneinit,
     66	.init = gp100_fb_init,
     67	.init_remapper = gp100_fb_init_remapper,
     68	.init_page = gm200_fb_init_page,
     69	.init_unkn = gp100_fb_init_unkn,
     70	.ram_new = gp100_ram_new,
     71};
     72
     73int
     74gp100_fb_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb)
     75{
     76	return gf100_fb_new_(&gp100_fb, device, type, inst, pfb);
     77}