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intel_idle: support Haswell 

This patch enables intel_idle to run on the
next-generation Intel(R) Microarchitecture code named "Haswell".

Signed-off-by: Len Brown <len.brown@intel.com>
hifive-unleashed-5.1
Len Brown 2013-01-31 14:40:49 -05:00
parent b1beab48f6
commit 85a4d2d41d
1 changed files with 39 additions and 0 deletions
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39
drivers/idle/intel_idle.c
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@ -212,6 +212,38 @@ static struct cpuidle_state ivb_cstates[MWAIT_MAX_NUM_CSTATES] = {
.enter = &intel_idle },
};
static struct cpuidle_state hsw_cstates[MWAIT_MAX_NUM_CSTATES] = {
{ /* MWAIT C0 */ },
{ /* MWAIT C1 */
.name = "C1-HSW",
.desc = "MWAIT 0x00",
.flags = MWAIT2flg(0x00) | CPUIDLE_FLAG_TIME_VALID,
.exit_latency = 2,
.target_residency = 2,
.enter = &intel_idle },
{ /* MWAIT C2 */
.name = "C3-HSW",
.desc = "MWAIT 0x10",
.flags = MWAIT2flg(0x10) | CPUIDLE_FLAG_TIME_VALID | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 33,
.target_residency = 100,
.enter = &intel_idle },
{ /* MWAIT C3 */
.name = "C6-HSW",
.desc = "MWAIT 0x20",
.flags = MWAIT2flg(0x20) | CPUIDLE_FLAG_TIME_VALID | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 133,
.target_residency = 400,
.enter = &intel_idle },
{ /* MWAIT C4 */
.name = "C7s-HSW",
.desc = "MWAIT 0x32",
.flags = MWAIT2flg(0x32) | CPUIDLE_FLAG_TIME_VALID | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 166,
.target_residency = 500,
.enter = &intel_idle },
};
static struct cpuidle_state atom_cstates[MWAIT_MAX_NUM_CSTATES] = {
{ /* MWAIT C0 */ },
{ /* MWAIT C1 */
@ -365,6 +397,10 @@ static const struct idle_cpu idle_cpu_ivb = {
.state_table = ivb_cstates,
};
static const struct idle_cpu idle_cpu_hsw = {
.state_table = hsw_cstates,
};
#define ICPU(model, cpu) \
{ X86_VENDOR_INTEL, 6, model, X86_FEATURE_MWAIT, (unsigned long)&cpu }
@ -382,6 +418,9 @@ static const struct x86_cpu_id intel_idle_ids[] = {
ICPU(0x2d, idle_cpu_snb),
ICPU(0x3a, idle_cpu_ivb),
ICPU(0x3e, idle_cpu_ivb),
ICPU(0x3c, idle_cpu_hsw),
ICPU(0x3f, idle_cpu_hsw),
ICPU(0x45, idle_cpu_hsw),
{}
};
MODULE_DEVICE_TABLE(x86cpu, intel_idle_ids);