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author | Dave Gordon <david.s.gordon@intel.com> | 2016-01-05 12:21:33 +0000 |
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committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-01-05 16:14:33 +0100 |
commit | c5d46ee20675379105bfd1ce422fe50169106e62 (patch) | |
tree | 81cdd110257b1cd1b52de2a734afc23632cf1fd5 /drivers/gpu/drm/i915/intel_lrc.c | |
parent | 28c72840a787559851aa8d70a18bb5ac41b73b53 (diff) | |
download | op-kernel-dev-c5d46ee20675379105bfd1ce422fe50169106e62.zip op-kernel-dev-c5d46ee20675379105bfd1ce422fe50169106e62.tar.gz |
drm/i915: add kerneldoc for intel_lr_context_size()
This function was recently renamed & exposed, so now it gets documented
Signed-off-by: Dave Gordon <david.s.gordon@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1451996493-16079-1-git-send-email-david.s.gordon@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/intel_lrc.c')
-rw-r--r-- | drivers/gpu/drm/i915/intel_lrc.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c index 808515c..8096c6a 100644 --- a/drivers/gpu/drm/i915/intel_lrc.c +++ b/drivers/gpu/drm/i915/intel_lrc.c @@ -2399,6 +2399,20 @@ void intel_lr_context_free(struct intel_context *ctx) } } +/** + * intel_lr_context_size() - return the size of the context for an engine + * @ring: which engine to find the context size for + * + * Each engine may require a different amount of space for a context image, + * so when allocating (or copying) an image, this function can be used to + * find the right size for the specific engine. + * + * Return: size (in bytes) of an engine-specific context image + * + * Note: this size includes the HWSP, which is part of the context image + * in LRC mode, but does not include the "shared data page" used with + * GuC submission. The caller should account for this if using the GuC. + */ uint32_t intel_lr_context_size(struct intel_engine_cs *ring) { int ret = 0; |