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drm/i915: add kerneldoc for intel_lr_context_size()

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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
This commit is contained in:
Dave Gordon 2016-01-05 12:21:33 +00:00 committed by Daniel Vetter
parent 28c72840a7
commit c5d46ee206
1 changed files with 14 additions and 0 deletions
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14
drivers/gpu/drm/i915/intel_lrc.c
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@ -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;