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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power.h (2658B)

      1/**************************************************************************
      2 * Copyright (c) 2009-2011, Intel Corporation.
      3 * All Rights Reserved.
      4
      5 * Permission is hereby granted, free of charge, to any person obtaining a
      6 * copy of this software and associated documentation files (the "Software"),
      7 * to deal in the Software without restriction, including without limitation
      8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
      9 * and/or sell copies of the Software, and to permit persons to whom the
     10 * Software is furnished to do so, subject to the following conditions:
     11 *
     12 * The above copyright notice and this permission notice (including the next
     13 * paragraph) shall be included in all copies or substantial portions of the
     14 * Software.
     15 *
     16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     22 * SOFTWARE.
     23 *
     24 * Authors:
     25 *    Benjamin Defnet <benjamin.r.defnet@intel.com>
     26 *    Rajesh Poornachandran <rajesh.poornachandran@intel.com>
     27 * Massively reworked
     28 *    Alan Cox <alan@linux.intel.com>
     29 */
     30#ifndef _PSB_POWERMGMT_H_
     31#define _PSB_POWERMGMT_H_
     32
     33#include <linux/pci.h>
     34
     35struct device;
     36struct drm_device;
     37
     38void gma_power_init(struct drm_device *dev);
     39void gma_power_uninit(struct drm_device *dev);
     40
     41/*
     42 * The kernel bus power management  will call these functions
     43 */
     44int gma_power_suspend(struct device *dev);
     45int gma_power_resume(struct device *dev);
     46int gma_power_thaw(struct device *dev);
     47int gma_power_freeze(struct device *dev);
     48int gma_power_restore(struct device *_dev);
     49
     50/*
     51 * These are the functions the driver should use to wrap all hw access
     52 * (i.e. register reads and writes)
     53 */
     54bool gma_power_begin(struct drm_device *dev, bool force);
     55void gma_power_end(struct drm_device *dev);
     56
     57/*
     58 * Use this function to do an instantaneous check for if the hw is on.
     59 * Only use this in cases where you know the mutex is already held such
     60 * as in irq install/uninstall and you need to
     61 * prevent a deadlock situation.  Otherwise use gma_power_begin().
     62 */
     63bool gma_power_is_on(struct drm_device *dev);
     64
     65/*
     66 * GFX-Runtime PM callbacks
     67 */
     68int psb_runtime_suspend(struct device *dev);
     69int psb_runtime_resume(struct device *dev);
     70int psb_runtime_idle(struct device *dev);
     71
     72#endif /*_PSB_POWERMGMT_H_*/