[PATCH v6 00/27] Add support for GuC-based SLPC
Sagar Arun Kamble
sagar.a.kamble at intel.com
Thu Jun 16 09:51:11 UTC 2016
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 and bxt guc firmware 8.7.
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
"[Intel-gfx] [PATCH v3 00/25] Add support for GuC-based SLPC"
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host-based power management; this may require a newer
version of the GuC firmware.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.
This v6 series has review comments addressed from v4 and rebase
w.r.t d-i-n-q. This series is enabling SLPC by default to
check the IGT/Perf testing status.
Sagar Arun Kamble (7):
drm/i915: Keep RP SW Mode enabled while disabling rps
drm/i915: Remove RPM suspend dependency on rps.enabled and related
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: Check GuC load status for Host to GuC action and SLPC status
drm/i915: Mark GuC load status as PENDING in i915_drm_resume_early
Tom O'Rourke (20):
drm/i915/slpc: Expose guc functions for use with SLPC
drm/i915/slpc: Add has_slpc capability flag
drm/i915/slpc: Add SKL SLPC Support
drm/i915/slpc: Add enable_slpc module parameter
drm/i915/slpc: Sanitize SLPC version
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 enabling
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
drm/i915/slpc: Add broxton support
drm/i915: Enable SLPC, where supported
drivers/gpu/drm/i915/Makefile | 5 +-
drivers/gpu/drm/i915/i915_debugfs.c | 460 ++++++++++++++++++++++++++
drivers/gpu/drm/i915/i915_drv.c | 19 +-
drivers/gpu/drm/i915/i915_drv.h | 7 +
drivers/gpu/drm/i915/i915_guc_submission.c | 45 +--
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 | 14 +
drivers/gpu/drm/i915/intel_guc.h | 13 +
drivers/gpu/drm/i915/intel_guc_loader.c | 29 ++
drivers/gpu/drm/i915/intel_pm.c | 111 +++++--
drivers/gpu/drm/i915/intel_slpc.c | 496 +++++++++++++++++++++++++++++
drivers/gpu/drm/i915/intel_slpc.h | 218 +++++++++++++
17 files changed, 1393 insertions(+), 57 deletions(-)
create mode 100644 drivers/gpu/drm/i915/intel_slpc.c
create mode 100644 drivers/gpu/drm/i915/intel_slpc.h
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