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Commit 281baf7a authored by Dasaratharaman Chandramouli's avatar Dasaratharaman Chandramouli Committed by Len Brown
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intel_idle: Support for Intel Xeon Phi Processor x200 Product Family 



Enables "Intel(R) Xeon Phi(TM) Processor x200 Product Family" support,
formerly code-named KNL. It is based on modified Intel Atom Silvermont
microarchitecture.

Signed-off-by: default avatarDasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
[micah.barany@intel.com: adjusted values of residency and latency]
Signed-off-by: default avatarMicah Barany <micah.barany@intel.com>
[hubert.chrzaniuk@intel.com: removed deprecated CPUIDLE_FLAG_TIME_VALID flag]
Signed-off-by: default avatarHubert Chrzaniuk <hubert.chrzaniuk@intel.com>
Signed-off-by: default avatarPawel Karczewski <pawel.karczewski@intel.com>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent d70e28f5

drivers/idle/intel_idle.c

+25 −0
Original line number Diff line number Diff line
@@ -716,6 +716,26 @@ static struct cpuidle_state avn_cstates[] = { 
	{

		.enter = NULL }

};

static struct cpuidle_state knl_cstates[] = {

	{

		.name = "C1-KNL",

		.desc = "MWAIT 0x00",

		.flags = MWAIT2flg(0x00),

		.exit_latency = 1,

		.target_residency = 2,

		.enter = &intel_idle,

		.enter_freeze = intel_idle_freeze },

	{

		.name = "C6-KNL",

		.desc = "MWAIT 0x10",

		.flags = MWAIT2flg(0x10) | CPUIDLE_FLAG_TLB_FLUSHED,

		.exit_latency = 120,

		.target_residency = 500,

		.enter = &intel_idle,

		.enter_freeze = intel_idle_freeze },

	{

		.enter = NULL }

};



/**

 * intel_idle
@@ -890,6 +910,10 @@ static const struct idle_cpu idle_cpu_avn = { 
	.disable_promotion_to_c1e = true,

};



static const struct idle_cpu idle_cpu_knl = {

	.state_table = knl_cstates,

};



#define ICPU(model, cpu) \

	{ X86_VENDOR_INTEL, 6, model, X86_FEATURE_MWAIT, (unsigned long)&cpu }
@@ -921,6 +945,7 @@ static const struct x86_cpu_id intel_idle_ids[] __initconst = { 
	ICPU(0x56, idle_cpu_bdw),

	ICPU(0x4e, idle_cpu_skl),

	ICPU(0x5e, idle_cpu_skl),

	ICPU(0x57, idle_cpu_knl),

	{}

};

MODULE_DEVICE_TABLE(x86cpu, intel_idle_ids);