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

g94.c (2148B)

      1/*
      2 * Copyright 2012 Nouveau Community
      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: Martin Peres <martin.peres@labri.fr>
     23 *          Ben Skeggs
     24 */
     25#include "priv.h"
     26
     27#include <subdev/timer.h>
     28
     29static int
     30g94_bus_hwsq_exec(struct nvkm_bus *bus, u32 *data, u32 size)
     31{
     32	struct nvkm_device *device = bus->subdev.device;
     33	int i;
     34
     35	nvkm_mask(device, 0x001098, 0x00000008, 0x00000000);
     36	nvkm_wr32(device, 0x001304, 0x00000000);
     37	nvkm_wr32(device, 0x001318, 0x00000000);
     38	for (i = 0; i < size; i++)
     39		nvkm_wr32(device, 0x080000 + (i * 4), data[i]);
     40	nvkm_mask(device, 0x001098, 0x00000018, 0x00000018);
     41	nvkm_wr32(device, 0x00130c, 0x00000001);
     42
     43	if (nvkm_msec(device, 2000,
     44		if (!(nvkm_rd32(device, 0x001308) & 0x00000100))
     45			break;
     46	) < 0)
     47		return -ETIMEDOUT;
     48
     49	return 0;
     50}
     51
     52static const struct nvkm_bus_func
     53g94_bus = {
     54	.init = nv50_bus_init,
     55	.intr = nv50_bus_intr,
     56	.hwsq_exec = g94_bus_hwsq_exec,
     57	.hwsq_size = 128,
     58};
     59
     60int
     61g94_bus_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
     62	    struct nvkm_bus **pbus)
     63{
     64	return nvkm_bus_new_(&g94_bus, device, type, inst, pbus);
     65}