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author | Len Brown <len.brown@intel.com> | 2012-06-01 19:45:32 -0400 |
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committer | Len Brown <len.brown@intel.com> | 2012-06-05 15:39:11 -0400 |
commit | 6edab08c24f9141d69cfa4683a0a027d86ab303e (patch) | |
tree | ab0482f3ea7288866c380e541b54b254bbb10b28 /drivers/idle/intel_idle.c | |
parent | 76e10d158efb6d4516018846f60c2ab5501900bc (diff) | |
download | linux-6edab08c24f9141d69cfa4683a0a027d86ab303e.tar.gz linux-6edab08c24f9141d69cfa4683a0a027d86ab303e.tar.bz2 linux-6edab08c24f9141d69cfa4683a0a027d86ab303e.zip |
intel_idle: initial IVB support
From an OS point of view, IVB looks like SNB, but quicker.
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/idle/intel_idle.c')
-rw-r--r-- | drivers/idle/intel_idle.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c index d0f59c3f87ef..a759a4c4bb0a 100644 --- a/drivers/idle/intel_idle.c +++ b/drivers/idle/intel_idle.c @@ -169,6 +169,38 @@ static struct cpuidle_state snb_cstates[MWAIT_MAX_NUM_CSTATES] = { .enter = &intel_idle }, }; +static struct cpuidle_state ivb_cstates[MWAIT_MAX_NUM_CSTATES] = { + { /* MWAIT C0 */ }, + { /* MWAIT C1 */ + .name = "C1-IVB", + .desc = "MWAIT 0x00", + .flags = CPUIDLE_FLAG_TIME_VALID, + .exit_latency = 1, + .target_residency = 1, + .enter = &intel_idle }, + { /* MWAIT C2 */ + .name = "C3-IVB", + .desc = "MWAIT 0x10", + .flags = CPUIDLE_FLAG_TIME_VALID | CPUIDLE_FLAG_TLB_FLUSHED, + .exit_latency = 59, + .target_residency = 156, + .enter = &intel_idle }, + { /* MWAIT C3 */ + .name = "C6-IVB", + .desc = "MWAIT 0x20", + .flags = CPUIDLE_FLAG_TIME_VALID | CPUIDLE_FLAG_TLB_FLUSHED, + .exit_latency = 80, + .target_residency = 300, + .enter = &intel_idle }, + { /* MWAIT C4 */ + .name = "C7-IVB", + .desc = "MWAIT 0x30", + .flags = CPUIDLE_FLAG_TIME_VALID | CPUIDLE_FLAG_TLB_FLUSHED, + .exit_latency = 87, + .target_residency = 300, + .enter = &intel_idle }, +}; + static struct cpuidle_state atom_cstates[MWAIT_MAX_NUM_CSTATES] = { { /* MWAIT C0 */ }, { /* MWAIT C1 */ @@ -347,6 +379,10 @@ static const struct idle_cpu idle_cpu_snb = { .state_table = snb_cstates, }; +static const struct idle_cpu idle_cpu_ivb = { + .state_table = ivb_cstates, +}; + #define ICPU(model, cpu) \ { X86_VENDOR_INTEL, 6, model, X86_FEATURE_MWAIT, (unsigned long)&cpu } @@ -362,6 +398,7 @@ static const struct x86_cpu_id intel_idle_ids[] = { ICPU(0x2f, idle_cpu_nehalem), ICPU(0x2a, idle_cpu_snb), ICPU(0x2d, idle_cpu_snb), + ICPU(0x3a, idle_cpu_ivb), {} }; MODULE_DEVICE_TABLE(x86cpu, intel_idle_ids); |