#ifndef LLC_C_ST_H
#define LLC_C_ST_H
/*
 * Copyright (c) 1997 by Procom Technology,Inc.
 *		2001 by Arnaldo Carvalho de Melo <acme@conectiva.com.br>
 *
 * This program can be redistributed or modified under the terms of the
 * GNU General Public License as published by the Free Software Foundation.
 * This program is distributed without any warranty or implied warranty
 * of merchantability or fitness for a particular purpose.
 *
 * See the GNU General Public License for more details.
 */
/* Connection component state management */
/* connection states */
#define LLC_CONN_OUT_OF_SVC		 0	/* prior to allocation */
 
#define LLC_CONN_STATE_ADM		 1	/* disc, initial state */
#define LLC_CONN_STATE_SETUP		 2	/* disconnected state */
#define LLC_CONN_STATE_NORMAL		 3	/* connected state */
#define LLC_CONN_STATE_BUSY		 4	/* connected state */
#define LLC_CONN_STATE_REJ		 5	/* connected state */
#define LLC_CONN_STATE_AWAIT		 6	/* connected state */
#define LLC_CONN_STATE_AWAIT_BUSY	 7	/* connected state */
#define LLC_CONN_STATE_AWAIT_REJ	 8	/* connected state */
#define LLC_CONN_STATE_D_CONN		 9	/* disconnected state */
#define LLC_CONN_STATE_RESET		10	/* disconnected state */
#define LLC_CONN_STATE_ERROR		11	/* disconnected state */
#define LLC_CONN_STATE_TEMP		12	/* disconnected state */

#define NBR_CONN_STATES			12	/* size of state table */
#define NO_STATE_CHANGE			100

/* Connection state table structure */
struct llc_conn_state_trans {
	llc_conn_ev_t	   ev;
	u8		   next_state;
	const llc_conn_ev_qfyr_t *ev_qualifiers;
	const llc_conn_action_t  *ev_actions;
};

struct llc_conn_state {
	u8			    current_state;
	struct llc_conn_state_trans **transitions;
};

extern struct llc_conn_state llc_conn_state_table[];
#endif /* LLC_C_ST_H */
linux/net-next.git/tree/net/irda/irlan/irlan_event.c?id=a3c11a7ac6cdd670324df39244ed1d2321bb0c9c'>tree</a><a href='/cgit.cgi/linux/net-next.git/commit/net/irda/irlan/irlan_event.c?id=a3c11a7ac6cdd670324df39244ed1d2321bb0c9c'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/net/irda/irlan/irlan_event.c?id=a3c11a7ac6cdd670324df39244ed1d2321bb0c9c'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/net/irda/irlan/irlan_event.c'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?id=a3c11a7ac6cdd670324df39244ed1d2321bb0c9c'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/net?id=a3c11a7ac6cdd670324df39244ed1d2321bb0c9c'>net</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/irda?id=a3c11a7ac6cdd670324df39244ed1d2321bb0c9c'>irda</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/irda/irlan?id=a3c11a7ac6cdd670324df39244ed1d2321bb0c9c'>irlan</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/irda/irlan/irlan_event.c?id=a3c11a7ac6cdd670324df39244ed1d2321bb0c9c'>irlan_event.c</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/net/irda/irlan/irlan_event.c?id=a3c11a7ac6cdd670324df39244ed1d2321bb0c9c&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
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<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/include/acpi/acnames.h?id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>6e978b22efa1db9f6e71b24440b5f1d93e968ee3</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/acpi/acnames.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/include/acpi/acnames.h?id=6e978b22efa1db9f6e71b24440b5f1d93e968ee3'>include/acpi/acnames.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/acpi/acnames.h?id=3c223c19aea85d3dda1416c187915f4a30b04b1f'>3c223c19aea85d3dda1416c187915f4a30b04b1f</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/acpi/acnames.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 'include/acpi/acnames.h')</div><table summary='diffstat' class='diffstat'>