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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nv44.c (2396B)

      1/*
      2 * Copyright (C) 2010 Francisco Jerez.
      3 * All Rights Reserved.
      4 *
      5 * Permission is hereby granted, free of charge, to any person obtaining
      6 * a copy of this software and associated documentation files (the
      7 * "Software"), to deal in the Software without restriction, including
      8 * without limitation the rights to use, copy, modify, merge, publish,
      9 * distribute, sublicense, and/or sell copies of the Software, and to
     10 * permit persons to whom the Software is furnished to do so, subject to
     11 * the following conditions:
     12 *
     13 * The above copyright notice and this permission notice (including the
     14 * next paragraph) shall be included in all copies or substantial
     15 * portions of the Software.
     16 *
     17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
     20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
     21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
     22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
     23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     24 *
     25 */
     26#include "priv.h"
     27#include "ram.h"
     28
     29static void
     30nv44_fb_tile_init(struct nvkm_fb *fb, int i, u32 addr, u32 size, u32 pitch,
     31		  u32 flags, struct nvkm_fb_tile *tile)
     32{
     33	tile->addr  = 0x00000001; /* mode = vram */
     34	tile->addr |= addr;
     35	tile->limit = max(1u, addr + size) - 1;
     36	tile->pitch = pitch;
     37}
     38
     39void
     40nv44_fb_tile_prog(struct nvkm_fb *fb, int i, struct nvkm_fb_tile *tile)
     41{
     42	struct nvkm_device *device = fb->subdev.device;
     43	nvkm_wr32(device, 0x100604 + (i * 0x10), tile->limit);
     44	nvkm_wr32(device, 0x100608 + (i * 0x10), tile->pitch);
     45	nvkm_wr32(device, 0x100600 + (i * 0x10), tile->addr);
     46	nvkm_rd32(device, 0x100600 + (i * 0x10));
     47}
     48
     49void
     50nv44_fb_init(struct nvkm_fb *fb)
     51{
     52	struct nvkm_device *device = fb->subdev.device;
     53	nvkm_wr32(device, 0x100850, 0x80000000);
     54	nvkm_wr32(device, 0x100800, 0x00000001);
     55}
     56
     57static const struct nvkm_fb_func
     58nv44_fb = {
     59	.init = nv44_fb_init,
     60	.tile.regions = 12,
     61	.tile.init = nv44_fb_tile_init,
     62	.tile.fini = nv20_fb_tile_fini,
     63	.tile.prog = nv44_fb_tile_prog,
     64	.ram_new = nv44_ram_new,
     65};
     66
     67int
     68nv44_fb_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb)
     69{
     70	return nvkm_fb_new_(&nv44_fb, device, type, inst, pfb);
     71}