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

base.c (3487B)

      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 "priv.h"
     25
     26#include <core/option.h>
     27#include <subdev/vga.h>
     28
     29u32
     30nvkm_devinit_mmio(struct nvkm_devinit *init, u32 addr)
     31{
     32	if (init->func->mmio)
     33		addr = init->func->mmio(init, addr);
     34	return addr;
     35}
     36
     37int
     38nvkm_devinit_pll_set(struct nvkm_devinit *init, u32 type, u32 khz)
     39{
     40	return init->func->pll_set(init, type, khz);
     41}
     42
     43void
     44nvkm_devinit_meminit(struct nvkm_devinit *init)
     45{
     46	if (init->func->meminit)
     47		init->func->meminit(init);
     48}
     49
     50u64
     51nvkm_devinit_disable(struct nvkm_devinit *init)
     52{
     53	if (init && init->func->disable)
     54		return init->func->disable(init);
     55	return 0;
     56}
     57
     58int
     59nvkm_devinit_post(struct nvkm_devinit *init)
     60{
     61	int ret = 0;
     62	if (init && init->func->post)
     63		ret = init->func->post(init, init->post);
     64	nvkm_devinit_disable(init);
     65	return ret;
     66}
     67
     68static int
     69nvkm_devinit_fini(struct nvkm_subdev *subdev, bool suspend)
     70{
     71	struct nvkm_devinit *init = nvkm_devinit(subdev);
     72	/* force full reinit on resume */
     73	if (suspend)
     74		init->post = true;
     75	return 0;
     76}
     77
     78static int
     79nvkm_devinit_preinit(struct nvkm_subdev *subdev)
     80{
     81	struct nvkm_devinit *init = nvkm_devinit(subdev);
     82
     83	if (init->func->preinit)
     84		init->func->preinit(init);
     85
     86	/* Override the post flag during the first call if NvForcePost is set */
     87	if (init->force_post) {
     88		init->post = init->force_post;
     89		init->force_post = false;
     90	}
     91
     92	/* unlock the extended vga crtc regs */
     93	nvkm_lockvgac(subdev->device, false);
     94	return 0;
     95}
     96
     97static int
     98nvkm_devinit_init(struct nvkm_subdev *subdev)
     99{
    100	struct nvkm_devinit *init = nvkm_devinit(subdev);
    101	if (init->func->init)
    102		init->func->init(init);
    103	return 0;
    104}
    105
    106static void *
    107nvkm_devinit_dtor(struct nvkm_subdev *subdev)
    108{
    109	struct nvkm_devinit *init = nvkm_devinit(subdev);
    110	void *data = init;
    111
    112	if (init->func->dtor)
    113		data = init->func->dtor(init);
    114
    115	/* lock crtc regs */
    116	nvkm_lockvgac(subdev->device, true);
    117	return data;
    118}
    119
    120static const struct nvkm_subdev_func
    121nvkm_devinit = {
    122	.dtor = nvkm_devinit_dtor,
    123	.preinit = nvkm_devinit_preinit,
    124	.init = nvkm_devinit_init,
    125	.fini = nvkm_devinit_fini,
    126};
    127
    128void
    129nvkm_devinit_ctor(const struct nvkm_devinit_func *func, struct nvkm_device *device,
    130		  enum nvkm_subdev_type type, int inst, struct nvkm_devinit *init)
    131{
    132	nvkm_subdev_ctor(&nvkm_devinit, device, type, inst, &init->subdev);
    133	init->func = func;
    134	init->force_post = nvkm_boolopt(device->cfgopt, "NvForcePost", false);
    135}