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2019-04-18lib: Add halffloat implementationKevin Strasser
Probe for and make an API available for tests to use f16c intrinsics to generate needed fp16 pixel data. Also import a pure c fp32 <-> fp16 conversion implementation from Mesa 18.3.4, which will act as a fallback when f16c is unavailable. rfc2: - Change API to reduce number of function calls (Maarten) v1: - Move pragma so AVX code isn't emitted for fallbacks (Ville) - Change edx to ecx (Ville) Signed-off-by: Kevin Strasser <kevin.strasser@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
2019-01-28lib/igt_x86: Mock-use variable to silence static analysisPetri Latvala
x86_features_to_string() uses a repeatable pattern that increments a pointer for each feature string, leaving a dead assignment for the last one. Add a (void)line to the end just to silence static analysis. Signed-off-by: Petri Latvala <petri.latvala@intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Arkadiusz Hiler <arkadiusz.hiler@intel.com>
2018-03-01lib: Provide an accelerated routine for readback from WCChris Wilson
Reading from WC is awfully slow as each access is uncached and so performed synchronously, stalling for the memory load. x86 did introduce some new instructions in SSE 4.1 to provide a small internal buffer to accelerate reading back a cacheline at a time from uncached memory, for this purpose. v2: Don't be lazy and handle misalignment. v3: Switch out of sse41 before emitting the generic memcpy routine v4: Replace opencoded memcpy_from_wc v5: Always flush the internal buffer before use (Eric) v6: Assume bulk moves, so check for dst alignment. v7: Use _mm_fence for _buitlin_ia32_mfence for consistency, remove superfluous defines (Ville) Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Eric Anholt <eric@anholt.net> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
2017-11-06lib: Fix compilation on non-x86Thierry Reding
The meson build avoids the failure by excluding the igt_x86.c file from the compilation. autotools being what they are don't support that in an easy way, so just use the preprocessor to avoid the duplicate function definitions. Since igt_x86.c will now be ignored for non-x86 builds, the meson work- around can be removed. Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2017-09-08build: Nuke #ifdef HAVE_CONFIG_H cargo-cultDaniel Vetter
We have it. Daniel Stone said the #ifdef HAVE_CONFIG_H comes from the X11 transition to the modular build, where in the imake -> modular build transition config.h wasn't universally available. Now we just make this a requirement (so yeah Android better generate one too). v2: Improve commit message a bit. Reviewed-by: Eric Anholt <eric@anholt.net> Acked-by: Jani Nikula <jani.nikula@intel.com> Acked-by: Arkadiusz Hiler <arkadiusz.hiler@intel.com> Acked-by: Petri Latvala <petri.latvala@intel.com> Acked-by: Daniel Stone <daniels@collabora.com> Acked-by: Radoslaw Szwichtenberg <radoslaw.szwichtenberg@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2017-07-24docs: Update documentation generation with missing entriesPaul Kocialkowski
This adds missing entries for documentation generation, both for tests and the API reference. The list of tests is made complete and ordered alphabetically, with modified descriptions for consistency. More files are added to the API reference, with a minimalistic description block added to them when it was missing. Signed-off-by: Paul Kocialkowski <paul.kocialkowski@linux.intel.com> Reviewed-by: Arkadiusz Hiler <arkadiusz.hiler@intel.com>
2016-07-11lib; Add x86 cpuid based feature detectionChris Wilson
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>