diff options
author | Jeff McGee <jeff.mcgee@intel.com> | 2015-03-12 10:52:08 -0700 |
---|---|---|
committer | Thomas Wood <thomas.wood@intel.com> | 2015-03-25 17:52:11 +0000 |
commit | aef4605f7c42df222761f6735375f499586d9d25 (patch) | |
tree | c71b5d3ad2369071b0942145065b14d99475d67e /lib/intel_batchbuffer.c | |
parent | 301b9e4bb389a968cfae79a1bea07834436165b8 (diff) |
lib: Add media spin
The media spin utility is derived from media fill. The purpose
is to create a simple means to keep the render engine (media
pipeline) busy for a controlled amount of time. It does so by
emitting a batch with a single execution thread that spins in
a tight loop the requested number of times. Each spin increments
a counter whose final 32-bit value is written to the destination
buffer on completion for checking. The implementation supports
Gen8, Gen8lp, and Gen9.
v2: Apply the recommendations of igt.cocci.
Signed-off-by: Jeff McGee <jeff.mcgee@intel.com>
Tested-by: Lei Liu <lei.a.liu@intel.com>
Signed-off-by: Thomas Wood <thomas.wood@intel.com>
Diffstat (limited to 'lib/intel_batchbuffer.c')
-rw-r--r-- | lib/intel_batchbuffer.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/lib/intel_batchbuffer.c b/lib/intel_batchbuffer.c index 1aa4ec34..a1b0643f 100644 --- a/lib/intel_batchbuffer.c +++ b/lib/intel_batchbuffer.c @@ -40,6 +40,7 @@ #include "rendercopy.h" #include "media_fill.h" #include "ioctl_wrappers.h" +#include "media_spin.h" #include <i915_drm.h> @@ -788,3 +789,26 @@ igt_fillfunc_t igt_get_gpgpu_fillfunc(int devid) return fill; } + +/** + * igt_get_media_spinfunc: + * @devid: pci device id + * + * Returns: + * + * The platform-specific media spin function pointer for the device specified + * with @devid. Will return NULL when no media spin function is implemented. + */ +igt_media_spinfunc_t igt_get_media_spinfunc(int devid) +{ + igt_media_spinfunc_t spin = NULL; + + if (IS_GEN9(devid)) + spin = gen9_media_spinfunc; + else if (IS_BROADWELL(devid)) + spin = gen8_media_spinfunc; + else if (IS_CHERRYVIEW(devid)) + spin = gen8lp_media_spinfunc; + + return spin; +} |