drm/i915/gen9: Cache plane data rates in CRTC state
This will be important when we start calculating CRTC data rates for
in-flight CRTC states since it will allow us to calculate the total data
rate without needing to grab the plane state for any planes that aren't
updated by the transaction.
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1463061971-19638-4-git-send-email-matthew.d.roper@intel.com
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index f6520d5..88cc1e2 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -2940,6 +2940,14 @@
struct intel_plane_state *intel_pstate = to_intel_plane_state(pstate);
struct drm_framebuffer *fb = pstate->fb;
uint32_t width = 0, height = 0;
+ unsigned format = fb ? fb->pixel_format : DRM_FORMAT_XRGB8888;
+
+ if (!intel_pstate->visible)
+ return 0;
+ if (pstate->plane->type == DRM_PLANE_TYPE_CURSOR)
+ return 0;
+ if (y && format != DRM_FORMAT_NV12)
+ return 0;
width = drm_rect_width(&intel_pstate->src) >> 16;
height = drm_rect_height(&intel_pstate->src) >> 16;
@@ -2948,17 +2956,17 @@
swap(width, height);
/* for planar format */
- if (fb->pixel_format == DRM_FORMAT_NV12) {
+ if (format == DRM_FORMAT_NV12) {
if (y) /* y-plane data rate */
return width * height *
- drm_format_plane_cpp(fb->pixel_format, 0);
+ drm_format_plane_cpp(format, 0);
else /* uv-plane data rate */
return (width / 2) * (height / 2) *
- drm_format_plane_cpp(fb->pixel_format, 1);
+ drm_format_plane_cpp(format, 1);
}
/* for packed formats */
- return width * height * drm_format_plane_cpp(fb->pixel_format, 0);
+ return width * height * drm_format_plane_cpp(format, 0);
}
/*
@@ -2967,32 +2975,34 @@
* 3 * 4096 * 8192 * 4 < 2^32
*/
static unsigned int
-skl_get_total_relative_data_rate(const struct intel_crtc_state *cstate)
+skl_get_total_relative_data_rate(struct intel_crtc_state *cstate)
{
struct intel_crtc *intel_crtc = to_intel_crtc(cstate->base.crtc);
struct drm_device *dev = intel_crtc->base.dev;
const struct intel_plane *intel_plane;
- unsigned int total_data_rate = 0;
+ unsigned int rate, total_data_rate = 0;
+ /* Calculate and cache data rate for each plane */
for_each_intel_plane_on_crtc(dev, intel_crtc, intel_plane) {
const struct drm_plane_state *pstate = intel_plane->base.state;
-
- if (pstate->fb == NULL)
- continue;
-
- if (intel_plane->base.type == DRM_PLANE_TYPE_CURSOR)
- continue;
+ int id = skl_wm_plane_id(intel_plane);
/* packed/uv */
- total_data_rate += skl_plane_relative_data_rate(cstate,
- pstate,
- 0);
+ rate = skl_plane_relative_data_rate(cstate, pstate, 0);
+ cstate->wm.skl.plane_data_rate[id] = rate;
- if (pstate->fb->pixel_format == DRM_FORMAT_NV12)
- /* y-plane */
- total_data_rate += skl_plane_relative_data_rate(cstate,
- pstate,
- 1);
+ /* y-plane */
+ rate = skl_plane_relative_data_rate(cstate, pstate, 1);
+ cstate->wm.skl.plane_y_data_rate[id] = rate;
+ }
+
+ /* Calculate CRTC's total data rate from cached values */
+ for_each_intel_plane_on_crtc(dev, intel_crtc, intel_plane) {
+ int id = skl_wm_plane_id(intel_plane);
+
+ /* packed/uv */
+ total_data_rate += cstate->wm.skl.plane_data_rate[id];
+ total_data_rate += cstate->wm.skl.plane_y_data_rate[id];
}
return total_data_rate;
@@ -3056,6 +3066,8 @@
* FIXME: we may not allocate every single block here.
*/
total_data_rate = skl_get_total_relative_data_rate(cstate);
+ if (total_data_rate == 0)
+ return;
start = alloc->start;
for_each_intel_plane_on_crtc(dev, intel_crtc, intel_plane) {
@@ -3070,7 +3082,7 @@
if (plane->type == DRM_PLANE_TYPE_CURSOR)
continue;
- data_rate = skl_plane_relative_data_rate(cstate, pstate, 0);
+ data_rate = cstate->wm.skl.plane_data_rate[id];
/*
* allocation for (packed formats) or (uv-plane part of planar format):
@@ -3089,20 +3101,16 @@
/*
* allocation for y_plane part of planar format:
*/
- if (pstate->fb->pixel_format == DRM_FORMAT_NV12) {
- y_data_rate = skl_plane_relative_data_rate(cstate,
- pstate,
- 1);
- y_plane_blocks = y_minimum[id];
- y_plane_blocks += div_u64((uint64_t)alloc_size * y_data_rate,
- total_data_rate);
+ y_data_rate = cstate->wm.skl.plane_y_data_rate[id];
- ddb->y_plane[pipe][id].start = start;
- ddb->y_plane[pipe][id].end = start + y_plane_blocks;
+ y_plane_blocks = y_minimum[id];
+ y_plane_blocks += div_u64((uint64_t)alloc_size * y_data_rate,
+ total_data_rate);
- start += y_plane_blocks;
- }
+ ddb->y_plane[pipe][id].start = start;
+ ddb->y_plane[pipe][id].end = start + y_plane_blocks;
+ start += y_plane_blocks;
}
}
@@ -3879,10 +3887,28 @@
struct drm_i915_private *dev_priv = dev->dev_private;
struct skl_ddb_allocation *ddb = &dev_priv->wm.skl_hw.ddb;
struct drm_crtc *crtc;
+ struct intel_crtc *intel_crtc;
skl_ddb_get_hw_state(dev_priv, ddb);
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
skl_pipe_wm_get_hw_state(crtc);
+
+ /* Calculate plane data rates */
+ for_each_intel_crtc(dev, intel_crtc) {
+ struct intel_crtc_state *cstate = intel_crtc->config;
+ struct intel_plane *intel_plane;
+
+ for_each_intel_plane_on_crtc(dev, intel_crtc, intel_plane) {
+ const struct drm_plane_state *pstate =
+ intel_plane->base.state;
+ int id = skl_wm_plane_id(intel_plane);
+
+ cstate->wm.skl.plane_data_rate[id] =
+ skl_plane_relative_data_rate(cstate, pstate, 0);
+ cstate->wm.skl.plane_y_data_rate[id] =
+ skl_plane_relative_data_rate(cstate, pstate, 1);
+ }
+ }
}
static void ilk_pipe_wm_get_hw_state(struct drm_crtc *crtc)