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 (2460B)

      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 "gf100.h"
     25#include "ram.h"
     26
     27#include <core/memory.h>
     28
     29int
     30gm200_fb_init_page(struct nvkm_fb *fb)
     31{
     32	struct nvkm_device *device = fb->subdev.device;
     33	switch (fb->page) {
     34	case 16: nvkm_mask(device, 0x100c80, 0x00001801, 0x00001001); break;
     35	case 17: nvkm_mask(device, 0x100c80, 0x00001801, 0x00000000); break;
     36	case  0: nvkm_mask(device, 0x100c80, 0x00001800, 0x00001800); break;
     37	default:
     38		return -EINVAL;
     39	}
     40	return 0;
     41}
     42
     43void
     44gm200_fb_init(struct nvkm_fb *base)
     45{
     46	struct gf100_fb *fb = gf100_fb(base);
     47	struct nvkm_device *device = fb->base.subdev.device;
     48
     49	if (fb->r100c10_page)
     50		nvkm_wr32(device, 0x100c10, fb->r100c10 >> 8);
     51
     52	nvkm_wr32(device, 0x100cc8, nvkm_memory_addr(fb->base.mmu_wr) >> 8);
     53	nvkm_wr32(device, 0x100ccc, nvkm_memory_addr(fb->base.mmu_rd) >> 8);
     54	nvkm_mask(device, 0x100cc4, 0x00060000,
     55		  min(nvkm_memory_size(fb->base.mmu_rd) >> 16, (u64)2) << 17);
     56}
     57
     58static const struct nvkm_fb_func
     59gm200_fb = {
     60	.dtor = gf100_fb_dtor,
     61	.oneinit = gf100_fb_oneinit,
     62	.init = gm200_fb_init,
     63	.init_page = gm200_fb_init_page,
     64	.intr = gf100_fb_intr,
     65	.ram_new = gm200_ram_new,
     66	.default_bigpage = 0 /* per-instance. */,
     67};
     68
     69int
     70gm200_fb_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb)
     71{
     72	return gf100_fb_new_(&gm200_fb, device, type, inst, pfb);
     73}