/*
 * bf6xx_sport - Analog Devices BF6XX SPORT driver
 *
 * Copyright (c) 2012 Analog Devices Inc.
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#ifndef _BF6XX_SPORT_H_
#define _BF6XX_SPORT_H_

#include <linux/platform_device.h>
#include <asm/bfin_sport3.h>

struct sport_device {
	struct platform_device *pdev;
	const unsigned short *pin_req;
	struct sport_register *tx_regs;
	struct sport_register *rx_regs;
	int tx_dma_chan;
	int rx_dma_chan;
	int tx_err_irq;
	int rx_err_irq;

	void (*tx_callback)(void *data);
	void *tx_data;
	void (*rx_callback)(void *data);
	void *rx_data;

	struct dmasg *tx_desc;
	struct dmasg *rx_desc;
	unsigned int tx_desc_size;
	unsigned int rx_desc_size;
	unsigned char *tx_buf;
	unsigned char *rx_buf;
	unsigned int tx_fragsize;
	unsigned int rx_fragsize;
	unsigned int tx_frags;
	unsigned int rx_frags;
	unsigned int wdsize;
};

struct sport_params {
	u32 spctl;
	u32 div;
};

struct sport_device *sport_create(struct platform_device *pdev);
void sport_delete(struct sport_device *sport);
int sport_set_tx_params(struct sport_device *sport,
		struct sport_params *params);
int sport_set_rx_params(struct sport_device *sport,
		struct sport_params *params);
void sport_tx_start(struct sport_device *sport);
void sport_rx_start(struct sport_device *sport);
void sport_tx_stop(struct sport_device *sport);
void sport_rx_stop(struct sport_device *sport);
void sport_set_tx_callback(struct sport_device *sport,
	void (*tx_callback)(void *), void *tx_data);
void sport_set_rx_callback(struct sport_device *sport,
	void (*rx_callback)(void *), void *rx_data);
int sport_config_tx_dma(struct sport_device *sport, void *buf,
	int fragcount, size_t fragsize);
int sport_config_rx_dma(struct sport_device *sport, void *buf,
	int fragcount, size_t fragsize);
unsigned long sport_curr_offset_tx(struct sport_device *sport);
unsigned long sport_curr_offset_rx(struct sport_device *sport);



#endif
n>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/security?id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>security</a>/<a href='/cgit.cgi/linux/net-next.git/commit/security/selinux?id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>selinux</a>/<a href='/cgit.cgi/linux/net-next.git/commit/security/selinux/ss?id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>ss</a>/<a href='/cgit.cgi/linux/net-next.git/commit/security/selinux/ss/conditional.h?id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>conditional.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='6e978b22efa1db9f6e71b24440b5f1d93e968ee3'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Srinivas Pandruvada &lt;srinivas.pandruvada@linux.intel.com&gt;</td><td class='right'>2017-02-03 14:18:39 -0800</td></tr>
<tr><th>committer</th><td>Rafael J. Wysocki &lt;rafael.j.wysocki@intel.com&gt;</td><td class='right'>2017-02-04 00:11:08 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/security/selinux/ss/conditional.h?id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>6e978b22efa1db9f6e71b24440b5f1d93e968ee3</a> (<a href='/cgit.cgi/linux/net-next.git/patch/security/selinux/ss/conditional.h?id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>c666f7a26b860674848949e39a610222b0723f89</a> /<a href='/cgit.cgi/linux/net-next.git/tree/security/selinux/ss/conditional.h?id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>security/selinux/ss/conditional.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/security/selinux/ss/conditional.h?id=3c223c19aea85d3dda1416c187915f4a30b04b1f'>3c223c19aea85d3dda1416c187915f4a30b04b1f</a> (<a href='/cgit.cgi/linux/net-next.git/diff/security/selinux/ss/conditional.h?id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3&amp;id2=3c223c19aea85d3dda1416c187915f4a30b04b1f'>diff</a>)</td></tr></table>
<div class='commit-subject'>cpufreq: intel_pstate: Disable energy efficiency optimization</div><div class='commit-msg'>Some Kabylake desktop processors may not reach 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 &lt;srinivas.pandruvada@linux.intel.com&gt;
Reviewed-by: Len Brown &lt;len.brown@intel.com&gt;
Cc: 4.6+ &lt;stable@vger.kernel.org&gt; # 4.6+
Signed-off-by: Rafael J. Wysocki &lt;rafael.j.wysocki@intel.com&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>Diffstat</a> (limited to 'security/selinux/ss/conditional.h')</div><table summary='diffstat' class='diffstat'>