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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padgm200.c (2504B)

      1/*
      2 * Copyright 2014 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 "pad.h"
     25#include "aux.h"
     26#include "bus.h"
     27
     28static void
     29gm200_i2c_pad_mode(struct nvkm_i2c_pad *pad, enum nvkm_i2c_pad_mode mode)
     30{
     31	struct nvkm_subdev *subdev = &pad->i2c->subdev;
     32	struct nvkm_device *device = subdev->device;
     33	const u32 base = (pad->id - NVKM_I2C_PAD_HYBRID(0)) * 0x50;
     34
     35	switch (mode) {
     36	case NVKM_I2C_PAD_OFF:
     37		nvkm_mask(device, 0x00d97c + base, 0x00000001, 0x00000001);
     38		break;
     39	case NVKM_I2C_PAD_I2C:
     40		nvkm_mask(device, 0x00d970 + base, 0x0000c003, 0x0000c001);
     41		nvkm_mask(device, 0x00d97c + base, 0x00000001, 0x00000000);
     42		break;
     43	case NVKM_I2C_PAD_AUX:
     44		nvkm_mask(device, 0x00d970 + base, 0x0000c003, 0x00000002);
     45		nvkm_mask(device, 0x00d97c + base, 0x00000001, 0x00000000);
     46		break;
     47	default:
     48		WARN_ON(1);
     49		break;
     50	}
     51}
     52
     53static const struct nvkm_i2c_pad_func
     54gm200_i2c_pad_s_func = {
     55	.bus_new_4 = gf119_i2c_bus_new,
     56	.aux_new_6 = gm200_i2c_aux_new,
     57	.mode = gm200_i2c_pad_mode,
     58};
     59
     60int
     61gm200_i2c_pad_s_new(struct nvkm_i2c *i2c, int id, struct nvkm_i2c_pad **ppad)
     62{
     63	return nvkm_i2c_pad_new_(&gm200_i2c_pad_s_func, i2c, id, ppad);
     64}
     65
     66static const struct nvkm_i2c_pad_func
     67gm200_i2c_pad_x_func = {
     68	.bus_new_4 = gf119_i2c_bus_new,
     69	.aux_new_6 = gm200_i2c_aux_new,
     70};
     71
     72int
     73gm200_i2c_pad_x_new(struct nvkm_i2c *i2c, int id, struct nvkm_i2c_pad **ppad)
     74{
     75	return nvkm_i2c_pad_new_(&gm200_i2c_pad_x_func, i2c, id, ppad);
     76}