[Intel-gfx] [PATCH 5/9] drm/i915: Split skl+ plane update into noarm+arm pair
Ville Syrjala
ville.syrjala at linux.intel.com
Mon Oct 18 11:50:26 UTC 2021
From: Ville Syrjälä <ville.syrjala at linux.intel.com>
Chop skl_program_plane() into two halves. Fist half becomes
the _noarm() variant, second part the _arm() variant.
Fortunately I have already previously grouped the register
writes into roughtly the correct order, so the split looks
surprisingly clean.
A few notable oddities I did not realize were self arming
are AUX_DIST and COLOR_CTL.
i915_update_info doesn't look too terrible on my cfl running
kms_atomic_transition --r plane-all-transition --extended:
w/o patch w/ patch
Updates: 2178 Updates: 2018
| |
1us | 1us |
| |
4us | 4us |*****
|********* |**********
16us |********** 16us |*******
|*** |
66us | 66us |
| |
262us | 262us |
| |
1ms | 1ms |
| |
4ms | 4ms |
| |
17ms | 17ms |
| |
Min update: 8332ns Min update: 6164ns
Max update: 48758ns Max update: 31808ns
Average update: 19959ns Average update: 13159ns
Overruns > 100us: 0 Overruns > 100us: 0
And with lockdep enabled:
w/o patch w/ patch
Updates: 2177 Updates: 2172
| |
1us | 1us |
| |
4us | 4us |
|******* |*********
16us |********** 16us |**********
|******* |*
66us | 66us |
| |
262us | 262us |
| |
1ms | 1ms |
| |
4ms | 4ms |
| |
17ms | 17ms |
| |
Min update: 12645ns Min update: 9980ns
Max update: 50153ns Max update: 33533ns
Average update: 25337ns Average update: 18245ns
Overruns > 250us: 0 Overruns > 250us: 0
TODO: On icl+ everything seems to be armed by PLANE_SURF, so we
can optimize this even further on modern platforms. But I
think there's a bit of refactoring to be done first to
figure out the best way to go about it (eg. just reusing
the current skl+ functions, or doing a lower level split).
TODO: Split scaler programming as well, but IIRC the scaler
has some oddball double buffering behaviour on some
platforms, so needs proper reverse engineering
Cc: Stanislav Lisovskiy <stanislav.lisovskiy at intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
.../drm/i915/display/skl_universal_plane.c | 113 +++++++++++-------
1 file changed, 72 insertions(+), 41 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/skl_universal_plane.c b/drivers/gpu/drm/i915/display/skl_universal_plane.c
index 74f3870d39b1..2a822e1e465e 100644
--- a/drivers/gpu/drm/i915/display/skl_universal_plane.c
+++ b/drivers/gpu/drm/i915/display/skl_universal_plane.c
@@ -1050,60 +1050,32 @@ static void icl_plane_csc_load_black(struct intel_plane *plane)
}
static void
-skl_program_plane(struct intel_plane *plane,
- const struct intel_crtc_state *crtc_state,
- const struct intel_plane_state *plane_state,
- int color_plane)
+skl_program_plane_noarm(struct intel_plane *plane,
+ const struct intel_crtc_state *crtc_state,
+ const struct intel_plane_state *plane_state,
+ int color_plane)
{
struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
enum plane_id plane_id = plane->id;
enum pipe pipe = plane->pipe;
- const struct drm_intel_sprite_colorkey *key = &plane_state->ckey;
u32 stride = skl_plane_stride(plane_state, color_plane);
const struct drm_framebuffer *fb = plane_state->hw.fb;
- int aux_plane = skl_main_to_aux_plane(fb, color_plane);
int crtc_x = plane_state->uapi.dst.x1;
int crtc_y = plane_state->uapi.dst.y1;
- u32 x = plane_state->view.color_plane[color_plane].x;
- u32 y = plane_state->view.color_plane[color_plane].y;
u32 src_w = drm_rect_width(&plane_state->uapi.src) >> 16;
u32 src_h = drm_rect_height(&plane_state->uapi.src) >> 16;
- u8 alpha = plane_state->hw.alpha >> 8;
- u32 plane_color_ctl = 0, aux_dist = 0;
unsigned long irqflags;
- u32 keymsk, keymax;
- u32 plane_ctl = plane_state->ctl;
-
- plane_ctl |= skl_plane_ctl_crtc(crtc_state);
-
- if (DISPLAY_VER(dev_priv) >= 10)
- plane_color_ctl = plane_state->color_ctl |
- glk_plane_color_ctl_crtc(crtc_state);
/* Sizes are 0 based */
src_w--;
src_h--;
- keymax = (key->max_value & 0xffffff) | PLANE_KEYMAX_ALPHA(alpha);
-
- keymsk = key->channel_mask & 0x7ffffff;
- if (alpha < 0xff)
- keymsk |= PLANE_KEYMSK_ALPHA_ENABLE;
-
/* The scaler will handle the output position */
if (plane_state->scaler_id >= 0) {
crtc_x = 0;
crtc_y = 0;
}
- if (aux_plane) {
- aux_dist = skl_surf_address(plane_state, aux_plane) -
- skl_surf_address(plane_state, color_plane);
-
- if (DISPLAY_VER(dev_priv) < 12)
- aux_dist |= skl_plane_stride(plane_state, aux_plane);
- }
-
spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
/*
@@ -1119,16 +1091,10 @@ skl_program_plane(struct intel_plane *plane,
intel_de_write_fw(dev_priv, PLANE_SIZE(pipe, plane_id),
(src_h << 16) | src_w);
- intel_de_write_fw(dev_priv, PLANE_AUX_DIST(pipe, plane_id), aux_dist);
-
if (icl_is_hdr_plane(dev_priv, plane_id))
intel_de_write_fw(dev_priv, PLANE_CUS_CTL(pipe, plane_id),
plane_state->cus_ctl);
- if (DISPLAY_VER(dev_priv) >= 10)
- intel_de_write_fw(dev_priv, PLANE_COLOR_CTL(pipe, plane_id),
- plane_color_ctl);
-
if (fb->format->is_yuv && icl_is_hdr_plane(dev_priv, plane_id))
icl_program_input_csc(plane, crtc_state, plane_state);
@@ -1138,6 +1104,52 @@ skl_program_plane(struct intel_plane *plane,
skl_write_plane_wm(plane, crtc_state);
+ intel_psr2_program_plane_sel_fetch(plane, crtc_state, plane_state, color_plane);
+
+ spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
+}
+
+static void
+skl_program_plane_arm(struct intel_plane *plane,
+ const struct intel_crtc_state *crtc_state,
+ const struct intel_plane_state *plane_state,
+ int color_plane)
+{
+ struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+ enum plane_id plane_id = plane->id;
+ enum pipe pipe = plane->pipe;
+ const struct drm_intel_sprite_colorkey *key = &plane_state->ckey;
+ const struct drm_framebuffer *fb = plane_state->hw.fb;
+ int aux_plane = skl_main_to_aux_plane(fb, color_plane);
+ u32 x = plane_state->view.color_plane[color_plane].x;
+ u32 y = plane_state->view.color_plane[color_plane].y;
+ u32 keymsk, keymax, aux_dist = 0, plane_color_ctl = 0;
+ u8 alpha = plane_state->hw.alpha >> 8;
+ u32 plane_ctl = plane_state->ctl;
+ unsigned long irqflags;
+
+ plane_ctl |= skl_plane_ctl_crtc(crtc_state);
+
+ if (DISPLAY_VER(dev_priv) >= 10)
+ plane_color_ctl = plane_state->color_ctl |
+ glk_plane_color_ctl_crtc(crtc_state);
+
+ keymax = (key->max_value & 0xffffff) | PLANE_KEYMAX_ALPHA(alpha);
+
+ keymsk = key->channel_mask & 0x7ffffff;
+ if (alpha < 0xff)
+ keymsk |= PLANE_KEYMSK_ALPHA_ENABLE;
+
+ if (aux_plane) {
+ aux_dist = skl_surf_address(plane_state, aux_plane) -
+ skl_surf_address(plane_state, color_plane);
+
+ if (DISPLAY_VER(dev_priv) < 12)
+ aux_dist |= skl_plane_stride(plane_state, aux_plane);
+ }
+
+ spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
+
intel_de_write_fw(dev_priv, PLANE_KEYVAL(pipe, plane_id),
key->min_value);
intel_de_write_fw(dev_priv, PLANE_KEYMSK(pipe, plane_id), keymsk);
@@ -1146,17 +1158,22 @@ skl_program_plane(struct intel_plane *plane,
intel_de_write_fw(dev_priv, PLANE_OFFSET(pipe, plane_id),
(y << 16) | x);
+ intel_de_write_fw(dev_priv, PLANE_AUX_DIST(pipe, plane_id), aux_dist);
+
if (DISPLAY_VER(dev_priv) < 11)
intel_de_write_fw(dev_priv, PLANE_AUX_OFFSET(pipe, plane_id),
(plane_state->view.color_plane[1].y << 16) |
plane_state->view.color_plane[1].x);
- intel_psr2_program_plane_sel_fetch(plane, crtc_state, plane_state, color_plane);
+ if (DISPLAY_VER(dev_priv) >= 10)
+ intel_de_write_fw(dev_priv, PLANE_COLOR_CTL(pipe, plane_id), plane_color_ctl);
/*
* Enable the scaler before the plane so that we don't
* get a catastrophic underrun even if the two operations
* end up happening in two different frames.
+ *
+ * TODO: split into noarm+arm pair
*/
if (plane_state->scaler_id >= 0)
skl_program_plane_scaler(plane, crtc_state, plane_state);
@@ -1199,7 +1216,20 @@ skl_plane_async_flip(struct intel_plane *plane,
spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
}
-/* TODO: split into noarm+arm pair */
+static void
+skl_plane_update_noarm(struct intel_plane *plane,
+ const struct intel_crtc_state *crtc_state,
+ const struct intel_plane_state *plane_state)
+{
+ int color_plane = 0;
+
+ if (plane_state->planar_linked_plane && !plane_state->planar_slave)
+ /* Program the UV plane on planar master */
+ color_plane = 1;
+
+ skl_program_plane_noarm(plane, crtc_state, plane_state, color_plane);
+}
+
static void
skl_plane_update_arm(struct intel_plane *plane,
const struct intel_crtc_state *crtc_state,
@@ -1211,7 +1241,7 @@ skl_plane_update_arm(struct intel_plane *plane,
/* Program the UV plane on planar master */
color_plane = 1;
- skl_program_plane(plane, crtc_state, plane_state, color_plane);
+ skl_program_plane_arm(plane, crtc_state, plane_state, color_plane);
}
static bool intel_format_is_p01x(u32 format)
@@ -2159,6 +2189,7 @@ skl_universal_plane_create(struct drm_i915_private *dev_priv,
}
plane->max_stride = skl_plane_max_stride;
+ plane->update_noarm = skl_plane_update_noarm;
plane->update_arm = skl_plane_update_arm;
plane->disable_arm = skl_plane_disable_arm;
plane->get_hw_state = skl_plane_get_hw_state;
--
2.32.0
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