On 13/04/16 10:52, Chris Wilson wrote:
When setting up the overlay page, we pin it into the GGTT (when using virtual addresses) and store the offset as overlay->flip_addr. Rather than doing a lookup of the GGTT address everytime, we can use the known address instead. Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxxxxxxxx> --- drivers/gpu/drm/i915/intel_overlay.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_overlay.c b/drivers/gpu/drm/i915/intel_overlay.c index 6694e9230cd5..e487ff18b42f 100644 --- a/drivers/gpu/drm/i915/intel_overlay.c +++ b/drivers/gpu/drm/i915/intel_overlay.c @@ -198,7 +198,7 @@ intel_overlay_map_regs(struct intel_overlay *overlay) regs = (struct overlay_registers __iomem *)overlay->reg_bo->phys_handle->vaddr; else regs = io_mapping_map_wc(ggtt->mappable, - i915_gem_obj_ggtt_offset(overlay->reg_bo)); + overlay->flip_addr); return regs; } @@ -1493,7 +1493,7 @@ intel_overlay_map_regs_atomic(struct intel_overlay *overlay) overlay->reg_bo->phys_handle->vaddr; else regs = io_mapping_map_atomic_wc(ggtt->mappable, - i915_gem_obj_ggtt_offset(overlay->reg_bo)); + overlay->flip_addr); return regs; } @@ -1523,10 +1523,7 @@ intel_overlay_capture_error_state(struct drm_device *dev) error->dovsta = I915_READ(DOVSTA); error->isr = I915_READ(ISR); - if (OVERLAY_NEEDS_PHYSICAL(overlay->dev)) - error->base = (__force long)overlay->reg_bo->phys_handle->vaddr; - else - error->base = i915_gem_obj_ggtt_offset(overlay->reg_bo); + error->base = overlay->flip_addr; regs = intel_overlay_map_regs_atomic(overlay); if (!regs)
I don't know this code, so I explored a bit and the patch looks correct. Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx> Regards, Tvrtko _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
