Commit f557e0d1 authored by Artem Bityutskiy's avatar Artem Bityutskiy Committed by Rafael J. Wysocki
Browse files

intel_idle: add Granite Rapids Xeon D support 



Add Granite Rapids Xeon D C-states support: C1, C1E, C6, and C6P.

The C-states are basically the same as in Granite Rapids Xeon SP/AP, but
characteristics (latency, target residency) are a bit different.

Signed-off-by: default avatarArtem Bityutskiy <artem.bityutskiy@linux.intel.com>
Link: https://patch.msgid.link/20241107115608.52233-1-artem.bityutskiy@linux.intel.com


[ rjw: Changelog edit ]
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent ee702fda

drivers/idle/intel_idle.c

+48 −0
Original line number Diff line number Diff line
@@ -1069,6 +1069,47 @@ static struct cpuidle_state gnr_cstates[] __initdata = { 
		.enter = NULL }

};



static struct cpuidle_state gnrd_cstates[] __initdata = {

	{

		.name = "C1",

		.desc = "MWAIT 0x00",

		.flags = MWAIT2flg(0x00),

		.exit_latency = 1,

		.target_residency = 1,

		.enter = &intel_idle,

		.enter_s2idle = intel_idle_s2idle, },

	{

		.name = "C1E",

		.desc = "MWAIT 0x01",

		.flags = MWAIT2flg(0x01) | CPUIDLE_FLAG_ALWAYS_ENABLE,

		.exit_latency = 4,

		.target_residency = 4,

		.enter = &intel_idle,

		.enter_s2idle = intel_idle_s2idle, },

	{

		.name = "C6",

		.desc = "MWAIT 0x20",

		.flags = MWAIT2flg(0x20) | CPUIDLE_FLAG_TLB_FLUSHED |

					   CPUIDLE_FLAG_INIT_XSTATE |

					   CPUIDLE_FLAG_PARTIAL_HINT_MATCH,

		.exit_latency = 220,

		.target_residency = 650,

		.enter = &intel_idle,

		.enter_s2idle = intel_idle_s2idle, },

	{

		.name = "C6P",

		.desc = "MWAIT 0x21",

		.flags = MWAIT2flg(0x21) | CPUIDLE_FLAG_TLB_FLUSHED |

					   CPUIDLE_FLAG_INIT_XSTATE |

					   CPUIDLE_FLAG_PARTIAL_HINT_MATCH,

		.exit_latency = 240,

		.target_residency = 750,

		.enter = &intel_idle,

		.enter_s2idle = intel_idle_s2idle, },

	{

		.enter = NULL }

};



static struct cpuidle_state atom_cstates[] __initdata = {

	{

		.name = "C1E",
@@ -1508,6 +1549,12 @@ static const struct idle_cpu idle_cpu_gnr __initconst = { 
	.use_acpi = true,

};



static const struct idle_cpu idle_cpu_gnrd __initconst = {

	.state_table = gnrd_cstates,

	.disable_promotion_to_c1e = true,

	.use_acpi = true,

};



static const struct idle_cpu idle_cpu_avn __initconst = {

	.state_table = avn_cstates,

	.disable_promotion_to_c1e = true,
@@ -1593,6 +1640,7 @@ static const struct x86_cpu_id intel_idle_ids[] __initconst = { 
	X86_MATCH_VFM(INTEL_SAPPHIRERAPIDS_X,	&idle_cpu_spr),

	X86_MATCH_VFM(INTEL_EMERALDRAPIDS_X,	&idle_cpu_spr),

	X86_MATCH_VFM(INTEL_GRANITERAPIDS_X,	&idle_cpu_gnr),

	X86_MATCH_VFM(INTEL_GRANITERAPIDS_D,	&idle_cpu_gnrd),

	X86_MATCH_VFM(INTEL_XEON_PHI_KNL,	&idle_cpu_knl),

	X86_MATCH_VFM(INTEL_XEON_PHI_KNM,	&idle_cpu_knl),

	X86_MATCH_VFM(INTEL_ATOM_GOLDMONT,	&idle_cpu_bxt),