From: Ville Syrjälä Date: Mon, 18 Oct 2021 11:50:28 +0000 (+0300) Subject: drm/i915: Split g4x+ sprite plane update into noarm+arm pair X-Git-Tag: v6.1-rc5~176^2~17^2~904 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=120542e2c1d12e7d3594ceeaa6e02296af52cc80;p=platform%2Fkernel%2Flinux-starfive.git drm/i915: Split g4x+ sprite plane update into noarm+arm pair 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 Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20211018115030.3547-8-ville.syrjala@linux.intel.com Reviewed-by: Stanislav Lisovskiy --- diff --git a/drivers/gpu/drm/i915/display/intel_sprite.c b/drivers/gpu/drm/i915/display/intel_sprite.c index fb249966..fe779b5 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;