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| author | Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> | 2014-09-05 02:22:54 +0200 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2016-03-23 21:19:38 +0100 |
| commit | 281baf7a702693deaa45c98ef0c5161006b48257 (patch) | |
| tree | 7b519adce293e68a69ac043740eb45094d0ae89b /drivers/idle | |
| parent | intel_idle: prevent SKL-H boot failure when C8+C9+C10 enabled (diff) | |
| download | linux-281baf7a702693deaa45c98ef0c5161006b48257.tar.xz linux-281baf7a702693deaa45c98ef0c5161006b48257.zip | |
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: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
[micah.barany@intel.com: adjusted values of residency and latency]
Signed-off-by: Micah Barany <micah.barany@intel.com>
[hubert.chrzaniuk@intel.com: removed deprecated CPUIDLE_FLAG_TIME_VALID flag]
Signed-off-by: Hubert Chrzaniuk <hubert.chrzaniuk@intel.com>
Signed-off-by: Pawel Karczewski <pawel.karczewski@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/idle')
| -rw-r--r-- | drivers/idle/intel_idle.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c index 146eed70bdf4..ba947df5a8c7 100644 --- a/drivers/idle/intel_idle.c +++ b/drivers/idle/intel_idle.c @@ -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); |