From 5cd6317de5041143cadb79f3ec22bd8073d9b563 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= <ville.syrjala@linux.intel.com>
Date: Mon, 18 Oct 2021 14:50:28 +0300
Subject: drm/i915: Split g4x+ sprite plane update into noarm+arm pair
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Git-commit: 120542e2c1d12e7d3594ceeaa6e02296af52cc80
Patch-mainline: v5.17-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225
Chop g4x_sprite_update() 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.
Not much of a change in i915_update_info on these older
platforms that don't have so many planes or registers to
begin with. Here are the numbers from snb (totally unpatched
vs. both primary plane and sprite patched applied) running
kms_atomic_transition --r plane-all-transition --extended:
w/o patch w/ patch
Updates: 5404 Updates: 5405
| |
1us |****** 1us |******
|********* |*********
4us |*********** 4us |***********
|********** |**********
16us |** 16us |**
| |
66us | 66us |
| |
262us | 262us |
| |
1ms | 1ms |
| |
4ms | 4ms |
| |
17ms | 17ms |
| |
Min update: 1400ns Min update: 1307ns
Max update: 19809ns Max update: 20194ns
Average update: 6957ns Average update: 6432ns
Overruns > 100us: 0 Overruns > 100us: 0
But there seems to be a slight improvement with
lockdep enabled:
w/o patch w/ patch
Updates: 17612 Updates: 16364
| |
1us | 1us |
|****** |******
4us |********** 4us |**********
|************ |*************
16us |************* 16us |************
|*** |*
66us | 66us |
| |
262us | 262us |
| |
1ms | 1ms |
| |
4ms | 4ms |
| |
17ms | 17ms |
| |
Min update: 3141ns Min update: 3562ns
Max update: 126450ns Max update: 73354ns
Average update: 16373ns Average update: 15153ns
Overruns > 250us: 0 Overruns > 250us: 0
Cc: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211018115030.3547-8-ville.syrjala@linux.intel.com
Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/i915/display/intel_sprite.c | 41 ++++++++++++++-------
1 file changed, 28 insertions(+), 13 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_sprite.c b/drivers/gpu/drm/i915/display/intel_sprite.c
index fb249966e5dd..fe779b5dd6f6 100644
--- a/drivers/gpu/drm/i915/display/intel_sprite.c
+++ b/drivers/gpu/drm/i915/display/intel_sprite.c
@@ -1166,28 +1166,21 @@ static void ilk_sprite_update_gamma(const struct intel_plane_state *plane_state)
}
static void
-g4x_sprite_update_arm(struct intel_plane *plane,
- const struct intel_crtc_state *crtc_state,
- const struct intel_plane_state *plane_state)
+g4x_sprite_update_noarm(struct intel_plane *plane,
+ const struct intel_crtc_state *crtc_state,
+ const struct intel_plane_state *plane_state)
{
struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
enum pipe pipe = plane->pipe;
- u32 dvssurf_offset = plane_state->view.color_plane[0].offset;
- u32 linear_offset;
- const struct drm_intel_sprite_colorkey *key = &plane_state->ckey;
int crtc_x = plane_state->uapi.dst.x1;
int crtc_y = plane_state->uapi.dst.y1;
u32 crtc_w = drm_rect_width(&plane_state->uapi.dst);
u32 crtc_h = drm_rect_height(&plane_state->uapi.dst);
- u32 x = plane_state->view.color_plane[0].x;
- u32 y = plane_state->view.color_plane[0].y;
u32 src_w = drm_rect_width(&plane_state->uapi.src) >> 16;
u32 src_h = drm_rect_height(&plane_state->uapi.src) >> 16;
- u32 dvscntr, dvsscale = 0;
+ u32 dvsscale = 0;
unsigned long irqflags;
- dvscntr = plane_state->ctl | g4x_sprite_ctl_crtc(crtc_state);
-
/* Sizes are 0 based */
src_w--;
src_h--;
@@ -1197,8 +1190,6 @@ g4x_sprite_update_arm(struct intel_plane *plane,
if (crtc_w != src_w || crtc_h != src_h)
dvsscale = DVS_SCALE_ENABLE | (src_w << 16) | src_h;
- linear_offset = intel_fb_xy_to_linear(x, y, plane_state, 0);
-
spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
intel_de_write_fw(dev_priv, DVSSTRIDE(pipe),
@@ -1207,6 +1198,29 @@ g4x_sprite_update_arm(struct intel_plane *plane,
intel_de_write_fw(dev_priv, DVSSIZE(pipe), (crtc_h << 16) | crtc_w);
intel_de_write_fw(dev_priv, DVSSCALE(pipe), dvsscale);
+ spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
+}
+
+static void
+g4x_sprite_update_arm(struct intel_plane *plane,
+ const struct intel_crtc_state *crtc_state,
+ const struct intel_plane_state *plane_state)
+{
+ struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
+ enum pipe pipe = plane->pipe;
+ const struct drm_intel_sprite_colorkey *key = &plane_state->ckey;
+ u32 dvssurf_offset = plane_state->view.color_plane[0].offset;
+ u32 x = plane_state->view.color_plane[0].x;
+ u32 y = plane_state->view.color_plane[0].y;
+ u32 dvscntr, linear_offset;
+ unsigned long irqflags;
+
+ dvscntr = plane_state->ctl | g4x_sprite_ctl_crtc(crtc_state);
+
+ linear_offset = intel_fb_xy_to_linear(x, y, plane_state, 0);
+
+ spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
+
if (key->flags) {
intel_de_write_fw(dev_priv, DVSKEYVAL(pipe), key->min_value);
intel_de_write_fw(dev_priv, DVSKEYMSK(pipe),
@@ -1779,6 +1793,7 @@ intel_sprite_plane_create(struct drm_i915_private *dev_priv,
plane_funcs = &snb_sprite_funcs;
} else {
+ plane->update_noarm = g4x_sprite_update_noarm;
plane->update_arm = g4x_sprite_update_arm;
plane->disable_arm = g4x_sprite_disable_arm;
plane->get_hw_state = g4x_sprite_get_hw_state;
--
2.38.1