diff options
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 1190efa390b..25d96889d7d 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -3425,8 +3425,9 @@ static bool ironlake_compute_wm0(struct drm_device *dev, int *cursor_wm) { struct drm_crtc *crtc; - int htotal, hdisplay, clock, pixel_size = 0; - int line_time_us, line_count, entries; + int htotal, hdisplay, clock, pixel_size; + int line_time_us, line_count; + int entries, tlb_miss; crtc = intel_get_crtc_for_pipe(dev, pipe); if (crtc->fb == NULL || !crtc->enabled) @@ -3439,6 +3440,9 @@ static bool ironlake_compute_wm0(struct drm_device *dev, /* Use the small buffer method to calculate plane watermark */ entries = ((clock * pixel_size / 1000) * display_latency_ns) / 1000; + tlb_miss = display->fifo_size*display->cacheline_size - hdisplay * 8; + if (tlb_miss > 0) + entries += tlb_miss; entries = DIV_ROUND_UP(entries, display->cacheline_size); *plane_wm = entries + display->guard_size; if (*plane_wm > (int)display->max_wm) @@ -3448,6 +3452,9 @@ static bool ironlake_compute_wm0(struct drm_device *dev, line_time_us = ((htotal * 1000) / clock); line_count = (cursor_latency_ns / line_time_us + 1000) / 1000; entries = line_count * 64 * pixel_size; + tlb_miss = cursor->fifo_size*cursor->cacheline_size - hdisplay * 8; + if (tlb_miss > 0) + entries += tlb_miss; entries = DIV_ROUND_UP(entries, cursor->cacheline_size); *cursor_wm = entries + cursor->guard_size; if (*cursor_wm > (int)cursor->max_wm) |