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| author | Fernando Pacheco <fernando.pacheco@intel.com> | 2019-04-19 16:00:12 -0700 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-04-20 08:19:12 +0100 |
| commit | 911800765ef6cdcb9103da7557aa5dd9ebb4cda0 (patch) | |
| tree | a360b7e9273eca63a62a939cdcb1328c60abb3b2 /drivers/gpu/drm/i915/intel_guc.h | |
| parent | 95ebcda3ef4fa2c928e2e0dbe0f707ca90852110 (diff) | |
| download | linux-911800765ef6cdcb9103da7557aa5dd9ebb4cda0.tar.gz linux-911800765ef6cdcb9103da7557aa5dd9ebb4cda0.tar.bz2 linux-911800765ef6cdcb9103da7557aa5dd9ebb4cda0.zip | |
drm/i915/uc: Reserve upper range of GGTT
GuC and HuC depend on struct_mutex for device reinitialization. Moving
away from this dependency requires perma-pinning the firmware images in
GGTT. The upper portion of the GuC address space has a sizeable hole
(several MB) that is inaccessible by GuC. Reserve this range within GGTT
as it can comfortably hold GuC/HuC firmware images.
v2: Reserve node rather than insert (Chris)
Simpler determination of node start/size (Daniele)
Move reserve/release out to intel_guc.* files
v3: Reserve starting at GUC_GGTT_TOP only and bail if this
fails (Chris)
Signed-off-by: Fernando Pacheco <fernando.pacheco@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190419230015.18121-3-fernando.pacheco@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/intel_guc.h')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_guc.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_guc.h b/drivers/gpu/drm/i915/intel_guc.h index 2c59ff8d9f39..2494e84831a2 100644 --- a/drivers/gpu/drm/i915/intel_guc.h +++ b/drivers/gpu/drm/i915/intel_guc.h @@ -173,6 +173,8 @@ int intel_guc_suspend(struct intel_guc *guc); int intel_guc_resume(struct intel_guc *guc); struct i915_vma *intel_guc_allocate_vma(struct intel_guc *guc, u32 size); u32 intel_guc_reserved_gtt_size(struct intel_guc *guc); +int intel_guc_reserve_ggtt_top(struct intel_guc *guc); +void intel_guc_release_ggtt_top(struct intel_guc *guc); static inline int intel_guc_sanitize(struct intel_guc *guc) { |