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path: root/include/uapi/drm/armada_drm.h
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/*
 * Copyright (C) 2012 Russell King
 *  With inspiration from the i915 driver
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
#ifndef DRM_ARMADA_IOCTL_H
#define DRM_ARMADA_IOCTL_H

#include "drm.h"

#if defined(__cplusplus)
extern "C" {
#endif

#define DRM_ARMADA_GEM_CREATE		0x00
#define DRM_ARMADA_GEM_MMAP		0x02
#define DRM_ARMADA_GEM_PWRITE		0x03

#define ARMADA_IOCTL(dir, name, str) \
	DRM_##dir(DRM_COMMAND_BASE + DRM_ARMADA_##name, struct drm_armada_##str)

struct drm_armada_gem_create {
	uint32_t handle;
	uint32_t size;
};
#define DRM_IOCTL_ARMADA_GEM_CREATE \
	ARMADA_IOCTL(IOWR, GEM_CREATE, gem_create)

struct drm_armada_gem_mmap {
	uint32_t handle;
	uint32_t pad;
	uint64_t offset;
	uint64_t size;
	uint64_t addr;
};
#define DRM_IOCTL_ARMADA_GEM_MMAP \
	ARMADA_IOCTL(IOWR, GEM_MMAP, gem_mmap)

struct drm_armada_gem_pwrite {
	uint64_t ptr;
	uint32_t handle;
	uint32_t offset;
	uint32_t size;
};
#define DRM_IOCTL_ARMADA_GEM_PWRITE \
	ARMADA_IOCTL(IOW, GEM_PWRITE, gem_pwrite)

#if defined(__cplusplus)
}
#endif

#endif
each max turbo when running in HWP mode, even if running under sustained 100% utilization. This occurs when the HWP.EPP (Energy Performance Preference) is set to "balance_power" (0x80) -- the default on most systems. It occurs because the platform BIOS may erroneously enable an energy-efficiency setting -- MSR_IA32_POWER_CTL BIT-EE, which is not recommended to be enabled on this SKU. On the failing systems, this BIOS issue was not discovered when the desktop motherboard was tested with Windows, because the BIOS also neglects to provide the ACPI/CPPC table, that Windows requires to enable HWP, and so Windows runs in legacy P-state mode, where this setting has no effect. Linux' intel_pstate driver does not require ACPI/CPPC to enable HWP, and so it runs in HWP mode, exposing this incorrect BIOS configuration. There are several ways to address this problem. First, Linux can also run in legacy P-state mode on this system. As intel_pstate is how Linux enables HWP, booting with "intel_pstate=disable" will run in acpi-cpufreq/ondemand legacy p-state mode. Or second, the "performance" governor can be used with intel_pstate, which will modify HWP.EPP to 0. Or third, starting in 4.10, the /sys/devices/system/cpu/cpufreq/policy*/energy_performance_preference attribute in can be updated from "balance_power" to "performance". Or fourth, apply this patch, which fixes the erroneous setting of MSR_IA32_POWER_CTL BIT_EE on this model, allowing the default configuration to function as designed. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Reviewed-by: Len Brown <len.brown@intel.com> Cc: 4.6+ <stable@vger.kernel.org> # 4.6+ Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/usb/phy/Makefile')