[PATCH 12/13] intel_idle: Add SKX support

Len Brown
2016-04-06T21:01:54Z

From: Len Brown <len.brown@intel.com>

SKX is similar to BDX

Signed-off-by: Len Brown <len.brown@intel.com>
---
drivers/idle/intel_idle.c | 34 ++++++++++++++++++++++++++++++++++
1 file changed, 34 insertions(+)

diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c
index 7575699..d0ec343 100644
--- a/drivers/idle/intel_idle.c
+++ b/drivers/idle/intel_idle.c
@@ -660,6 +660,35 @@ static struct cpuidle_state skl_cstates[] = {
.enter = NULL }
};

+static struct cpuidle_state skx_cstates[] = {
+ {
+ .name = "C1-SKX",
+ .desc = "MWAIT 0x00",
+ .flags = MWAIT2flg(0x00),
+ .exit_latency = 2,
+ .target_residency = 2,
+ .enter = &intel_idle,
+ .enter_freeze = intel_idle_freeze, },
+ {
+ .name = "C1E-SKX",
+ .desc = "MWAIT 0x01",
+ .flags = MWAIT2flg(0x01),
+ .exit_latency = 10,
+ .target_residency = 20,
+ .enter = &intel_idle,
+ .enter_freeze = intel_idle_freeze, },
+ {
+ .name = "C6-SKX",
+ .desc = "MWAIT 0x20",
+ .flags = MWAIT2flg(0x20) | CPUIDLE_FLAG_TLB_FLUSHED,
+ .exit_latency = 133,
+ .target_residency = 600,
+ .enter = &intel_idle,
+ .enter_freeze = intel_idle_freeze, },
+ {
+ .enter = NULL }
+};
+
static struct cpuidle_state atom_cstates[] = {
{
.name = "C1E-ATM",
@@ -968,6 +997,10 @@ static const struct idle_cpu idle_cpu_skl = {
.disable_promotion_to_c1e = true,
};

+static const struct idle_cpu idle_cpu_skx = {
+ .state_table = skx_cstates,
+ .disable_promotion_to_c1e = true,
+};

static const struct idle_cpu idle_cpu_avn = {
.state_table = avn_cstates,
@@ -1014,6 +1047,7 @@ 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(0x55, idle_cpu_skx),
ICPU(0x57, idle_cpu_knl),
ICPU(0x5c, idle_cpu_bxt),
{}
--
2.8.0.rc4.16.g56331f8