drm/i915/guc/slpc: Define and initialize boost frequency

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Define helpers and struct members required to record boost info.
Boost frequency is initialized to RP0 at SLPC init. Also define num_waiters
which can track the pending boost requests.

Boost will be done by scheduling a worker thread. This will avoid
the need to make H2G calls inside an interrupt context. Initialize the
worker function during SLPC init as well. Had to move intel_guc_slpc_init
a few lines below to accommodate this.

v2: Add a workqueue to handle waitboost
v3: Code review comments (Ashutosh)

Cc: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211102012608.8609-2-vinay.belgaumkar@intel.com

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Vinay Belgaumkar 2021-11-01 18:26:06 -07:00 • committed by John Harrison

parent c1f110eeb2

commit 292e4fb05f

3 changed files with 93 additions and 23 deletions

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102

drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c

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1

drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h

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13

drivers/gpu/drm/i915/gt/uc/intel_guc_slpc_types.h

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