Although we calculate watermark values in the atomic state, we still
have both 'pending' and 'hardware' values that ultimately wind up in
dev_priv due to the somewhat complicated watermark flushing process.
Re-arranging how these are stored/named in the dev_priv substructure may
add a little bit of clarity to what they're for.
Signed-off-by: Matt Roper <matthew.d.roper@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_debugfs.c | 2 +-
drivers/gpu/drm/i915/i915_drv.h | 29 +++++++++++++++++++++--------
drivers/gpu/drm/i915/intel_display.c | 4 ++--
drivers/gpu/drm/i915/intel_pm.c | 12 ++++++------
4 files changed, 30 insertions(+), 17 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 54508f1..2a24141 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -3134,7 +3134,7 @@ static int i915_ddb_info(struct seq_file *m, void *unused)
drm_modeset_lock_all(dev);
- ddb = &dev_priv->wm.skl_hw.ddb;
+ ddb = &dev_priv->wm.skl.hw.ddb;
seq_printf(m, "%-15s%8s%8s%8s\n", "", "Start", "End", "Size");
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index be42dd8..c4ba9a2 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1918,17 +1918,30 @@ struct drm_i915_private {
/* Committed wm config */
struct intel_wm_config config;
- /*
- * The skl_wm_values structure is a bit too big for stack
- * allocation, so we keep the staging struct where we store
- * intermediate results here instead.
- */
- struct skl_wm_values skl_results;
-
/* current hardware state */
union {
struct ilk_wm_values hw;
- struct skl_wm_values skl_hw;
+ struct {
+ /*
+ * The skl_wm_values structure is a bit too big
+ * for stack allocation, so we keep the staging
+ * struct where we store intermediate results
+ * here instead.
+ *
+ * These watermark values correspond to the
+ * state that has been swapped into the various
+ * DRM objects, but may not have been
+ * completely written to hardware yet due to
+ * the multi-step flushing process.
+ */
+ struct skl_wm_values pending;
+
+ /*
+ * Watermark values that have been fully
+ * written and flushed to the hardware.
+ */
+ struct skl_wm_values hw;
+ } skl;
struct vlv_wm_values vlv;
};
} wm;
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 0a0e7f7..c58a83b 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -12581,7 +12581,7 @@ static void check_wm_state(struct drm_device *dev)
return;
skl_ddb_get_hw_state(dev_priv, &hw_ddb);
- sw_ddb = &dev_priv->wm.skl_hw.ddb;
+ sw_ddb = &dev_priv->wm.skl.hw.ddb;
for_each_intel_crtc(dev, intel_crtc) {
struct skl_ddb_entry *hw_entry, *sw_entry;
@@ -13192,7 +13192,7 @@ static int intel_atomic_commit(struct drm_device *dev,
drm_atomic_helper_swap_state(dev, state);
dev_priv->wm.config = to_intel_atomic_state(state)->wm_config;
- dev_priv->wm.skl_results = to_intel_atomic_state(state)->skl_wm;
+ dev_priv->wm.skl.pending = to_intel_atomic_state(state)->skl_wm;
for_each_crtc_in_state(state, crtc, crtc_state, i) {
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index a9e9e57..f1c989c 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -3183,7 +3183,7 @@ static bool skl_ddb_allocation_changed(const struct skl_ddb_allocation *new_ddb,
{
struct drm_device *dev = intel_crtc->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
- const struct skl_ddb_allocation *cur_ddb = &dev_priv->wm.skl_hw.ddb;
+ const struct skl_ddb_allocation *cur_ddb = &dev_priv->wm.skl.hw.ddb;
enum pipe pipe = intel_crtc->pipe;
if (memcmp(new_ddb->plane[pipe], cur_ddb->plane[pipe],
@@ -3529,7 +3529,7 @@ static void skl_flush_wm_values(struct drm_i915_private *dev_priv,
enum pipe pipe;
new_ddb = &new_values->ddb;
- cur_ddb = &dev_priv->wm.skl_hw.ddb;
+ cur_ddb = &dev_priv->wm.skl.hw.ddb;
/*
* First pass: flush the pipes with the new allocation contained into
@@ -3693,13 +3693,13 @@ static int skl_compute_wm(struct drm_crtc *crtc,
static void skl_program_watermarks(struct drm_i915_private *dev_priv)
{
- struct skl_wm_values *results = &dev_priv->wm.skl_results;
+ struct skl_wm_values *results = &dev_priv->wm.skl.pending;
skl_write_wm_values(dev_priv, results);
skl_flush_wm_values(dev_priv, results);
/* store the new configuration */
- dev_priv->wm.skl_hw = *results;
+ dev_priv->wm.skl.hw = *results;
}
@@ -3790,7 +3790,7 @@ static void skl_pipe_wm_get_hw_state(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
- struct skl_wm_values *hw = &dev_priv->wm.skl_hw;
+ struct skl_wm_values *hw = &dev_priv->wm.skl.hw;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct intel_crtc_state *cstate = to_intel_crtc_state(crtc->state);
struct skl_pipe_wm *active = &cstate->wm.skl;
@@ -3842,7 +3842,7 @@ static void skl_pipe_wm_get_hw_state(struct drm_crtc *crtc)
void skl_wm_get_hw_state(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
- struct skl_ddb_allocation *ddb = &dev_priv->wm.skl_hw.ddb;
+ struct skl_ddb_allocation *ddb = &dev_priv->wm.skl.hw.ddb;
struct drm_crtc *crtc;
skl_ddb_get_hw_state(dev_priv, ddb);
--
2.1.4
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