On Wed, Apr 27, 2016 at 06:10:44PM -0700, tom.orourke@xxxxxxxxx wrote: > From: Tom O'Rourke <Tom.O'Rourke@xxxxxxxxx> > > SLPC (Single Loop Power Controller) is a replacement for > some host-based power management features. The SLPC > implemenation runs in firmware on GuC. > > This series has been tested with SKL guc firmware > version 6.1. > > The graphics power management features in SLPC in those > versions are called GTPERF, BALANCER, and DCC. > > GTPERF is a combination of DFPS (Dynamic FPS) and Turbo. > DFPS adjusts requested graphics frequency to maintain > target framerate. Turbo adjusts requested graphics > frequency to maintain target GT busyness; this includes > an adaptive boost turbo method. > > BALANCER adjusts balance between power budgets for IA > and GT in power limited scenarios. BALANCER is only > active when all display pipes are in "game" mode. > > DCC (Duty Cycle Control) adjusts requested graphics > frequency and stalls guc-scheduler to maintain actual > graphics frequency in efficient range. > > The v3 series can be found in the archive at > " [PATCH v3 00/25] Add support for GuC-based SLPC" > https://lists.freedesktop.org/archives/intel-gfx/2016-April/091771.html > > This v4 series incorporates feedback from internal code > reviews for Android and Yocto projects. This series also > drops the Broxton patches; the Broxton firmware has not > been published yet. Broxton support can be added later > when the Broxton firmware is available. > > Also, the "DO NOT MERGE" patches to enable SLPC and guc > submission by default have been dropped. These can be > added later after SLPC has been shown to outperform > host-based power management; this may require a newer > version of the GuC firmware. > > With SLPC disabled by default, this series should be > safe to merge now. > > VIZ-6773, VIZ-6889 Thank you to Chris, Daniel and Imre for your comments. I agree that some of the suggested changes should be made. Whether those changes should be made before merging or with later patches will be someone else's problem. I won't be sending another version of this series. Thanks, Tom O'Rourke > > Sagar Arun Kamble (4): > drm/i915/slpc: Add Display mode event related data structures > drm/i915/slpc: Notification of Display mode change > drm/i915/slpc: Notification of Refresh Rate change > drm/i915/slpc: Fail intel_runtime_suspend if SLPC or RPS not active > > Tom O'Rourke (17): > drm/i915/slpc: Expose guc functions for use with SLPC > drm/i915/slpc: Add has_slpc capability flag > drm/i915/slpc: Add slpc_version_check > drm/i915/slpc: Add enable_slpc module parameter > drm/i915/slpc: Use intel_slpc_* functions if supported > drm/i915/slpc: Enable SLPC in guc if supported > drm/i915/slpc: If using SLPC, do not set frequency > drm/i915/slpc: Allocate/Release/Initialize SLPC shared data > drm/i915/slpc: Setup rps frequency values during SLPC init > drm/i915/slpc: Update current requested frequency > drm/i915/slpc: Send reset event > drm/i915/slpc: Send shutdown event > drm/i915/slpc: Add slpc_status enum values > drm/i915/slpc: Add parameter unset/set/get functions > drm/i915/slpc: Add slpc support for max/min freq > drm/i915/slpc: Add enable/disable debugfs for slpc > drm/i915/slpc: Add i915_slpc_info to debugfs > > drivers/gpu/drm/i915/Makefile | 5 +- > drivers/gpu/drm/i915/i915_debugfs.c | 456 +++++++++++++++++++++++++ > drivers/gpu/drm/i915/i915_drv.c | 4 +- > drivers/gpu/drm/i915/i915_drv.h | 7 + > drivers/gpu/drm/i915/i915_guc_submission.c | 6 +- > drivers/gpu/drm/i915/i915_params.c | 6 + > drivers/gpu/drm/i915/i915_params.h | 1 + > drivers/gpu/drm/i915/i915_reg.h | 1 + > drivers/gpu/drm/i915/i915_sysfs.c | 21 ++ > drivers/gpu/drm/i915/intel_display.c | 2 + > drivers/gpu/drm/i915/intel_dp.c | 2 + > drivers/gpu/drm/i915/intel_drv.h | 11 + > drivers/gpu/drm/i915/intel_guc.h | 13 + > drivers/gpu/drm/i915/intel_guc_loader.c | 36 ++ > drivers/gpu/drm/i915/intel_pm.c | 42 ++- > drivers/gpu/drm/i915/intel_slpc.c | 516 +++++++++++++++++++++++++++++ > drivers/gpu/drm/i915/intel_slpc.h | 217 ++++++++++++ > 17 files changed, 1329 insertions(+), 17 deletions(-) > create mode 100644 drivers/gpu/drm/i915/intel_slpc.c > create mode 100644 drivers/gpu/drm/i915/intel_slpc.h > > -- > 1.9.1 > _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
