From 19aefbc778b8b8e87c2d31be9736c634f0ea95a8 Mon Sep 17 00:00:00 2001 From: Stanislav Lisovskiy Date: Mon, 1 Jun 2020 20:30:58 +0300 Subject: [PATCH] drm/i915: Fix wrong CDCLK adjustment changes Previous patch didn't take into account all pipes but only those in state, which could cause wrong CDCLK conclcusions and calculations. Also there was a severe issue with min_cdclk being assigned to 0 every compare cycle. Too bad this was found by me only after merge. This could be also causing the issues in test, however not clear - anyway marking this as fixing the "Adjust CDCLK accordingly to our DBuf bw needs". v2: - s/pipe/crtc->pipe/ - save a bit of instructions by skipping inactive pipes, without getting 0 DBuf slice mask for it. Signed-off-by: Stanislav Lisovskiy Fixes: cd1915460861 ("drm/i915: Adjust CDCLK accordingly to our DBuf bw needs") Reviewed-by: Manasi Navare Signed-off-by: Manasi Navare Link: https://patchwork.freedesktop.org/patch/msgid/20200601173058.5084-1-stanislav.lisovskiy@intel.com --- drivers/gpu/drm/i915/display/intel_bw.c | 52 ++++++++++++++++++---------- drivers/gpu/drm/i915/display/intel_cdclk.c | 19 +++++----- drivers/gpu/drm/i915/display/intel_display.c | 26 ++++++-------- 3 files changed, 55 insertions(+), 42 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_bw.c b/drivers/gpu/drm/i915/display/intel_bw.c index a79bd7a..bd06040 100644 --- a/drivers/gpu/drm/i915/display/intel_bw.c +++ b/drivers/gpu/drm/i915/display/intel_bw.c @@ -437,6 +437,7 @@ int skl_bw_calc_min_cdclk(struct intel_atomic_state *state) struct intel_crtc *crtc; int max_bw = 0; int slice_id; + enum pipe pipe; int i; for_each_new_intel_crtc_in_state(state, crtc, crtc_state, i) { @@ -447,10 +448,15 @@ int skl_bw_calc_min_cdclk(struct intel_atomic_state *state) if (IS_ERR(new_bw_state)) return PTR_ERR(new_bw_state); + old_bw_state = intel_atomic_get_old_bw_state(state); + crtc_bw = &new_bw_state->dbuf_bw[crtc->pipe]; memset(&crtc_bw->used_bw, 0, sizeof(crtc_bw->used_bw)); + if (!crtc_state->hw.active) + continue; + for_each_plane_id_on_crtc(crtc, plane_id) { const struct skl_ddb_entry *plane_alloc = &crtc_state->wm.skl.plane_ddb_y[plane_id]; @@ -478,6 +484,15 @@ int skl_bw_calc_min_cdclk(struct intel_atomic_state *state) for_each_dbuf_slice_in_mask(slice_id, dbuf_mask) crtc_bw->used_bw[slice_id] += data_rate; } + } + + if (!old_bw_state) + return 0; + + for_each_pipe(dev_priv, pipe) { + struct intel_dbuf_bw *crtc_bw; + + crtc_bw = &new_bw_state->dbuf_bw[pipe]; for_each_dbuf_slice(slice_id) { /* @@ -490,14 +505,9 @@ int skl_bw_calc_min_cdclk(struct intel_atomic_state *state) */ max_bw += crtc_bw->used_bw[slice_id]; } - - new_bw_state->min_cdclk = max_bw / 64; - - old_bw_state = intel_atomic_get_old_bw_state(state); } - if (!old_bw_state) - return 0; + new_bw_state->min_cdclk = max_bw / 64; if (new_bw_state->min_cdclk != old_bw_state->min_cdclk) { int ret = intel_atomic_lock_global_state(&new_bw_state->base); @@ -511,34 +521,38 @@ int skl_bw_calc_min_cdclk(struct intel_atomic_state *state) int intel_bw_calc_min_cdclk(struct intel_atomic_state *state) { - int i; + struct drm_i915_private *dev_priv = to_i915(state->base.dev); + struct intel_bw_state *new_bw_state = NULL; + struct intel_bw_state *old_bw_state = NULL; const struct intel_crtc_state *crtc_state; struct intel_crtc *crtc; int min_cdclk = 0; - struct intel_bw_state *new_bw_state = NULL; - struct intel_bw_state *old_bw_state = NULL; + enum pipe pipe; + int i; for_each_new_intel_crtc_in_state(state, crtc, crtc_state, i) { - struct intel_cdclk_state *cdclk_state; - new_bw_state = intel_atomic_get_bw_state(state); if (IS_ERR(new_bw_state)) return PTR_ERR(new_bw_state); - cdclk_state = intel_atomic_get_cdclk_state(state); - if (IS_ERR(cdclk_state)) - return PTR_ERR(cdclk_state); - - min_cdclk = max(cdclk_state->min_cdclk[crtc->pipe], min_cdclk); - - new_bw_state->min_cdclk = min_cdclk; - old_bw_state = intel_atomic_get_old_bw_state(state); } if (!old_bw_state) return 0; + for_each_pipe(dev_priv, pipe) { + struct intel_cdclk_state *cdclk_state; + + cdclk_state = intel_atomic_get_new_cdclk_state(state); + if (!cdclk_state) + return 0; + + min_cdclk = max(cdclk_state->min_cdclk[pipe], min_cdclk); + } + + new_bw_state->min_cdclk = min_cdclk; + if (new_bw_state->min_cdclk != old_bw_state->min_cdclk) { int ret = intel_atomic_lock_global_state(&new_bw_state->base); diff --git a/drivers/gpu/drm/i915/display/intel_cdclk.c b/drivers/gpu/drm/i915/display/intel_cdclk.c index f9b0fc7..08468b1 100644 --- a/drivers/gpu/drm/i915/display/intel_cdclk.c +++ b/drivers/gpu/drm/i915/display/intel_cdclk.c @@ -2084,9 +2084,12 @@ int intel_crtc_compute_min_cdclk(const struct intel_crtc_state *crtc_state) static int intel_compute_min_cdclk(struct intel_cdclk_state *cdclk_state) { struct intel_atomic_state *state = cdclk_state->base.state; + struct drm_i915_private *dev_priv = to_i915(state->base.dev); + struct intel_bw_state *bw_state = NULL; struct intel_crtc *crtc; struct intel_crtc_state *crtc_state; int min_cdclk, i; + enum pipe pipe; for_each_new_intel_crtc_in_state(state, crtc, crtc_state, i) { int ret; @@ -2095,6 +2098,10 @@ static int intel_compute_min_cdclk(struct intel_cdclk_state *cdclk_state) if (min_cdclk < 0) return min_cdclk; + bw_state = intel_atomic_get_bw_state(state); + if (IS_ERR(bw_state)) + return PTR_ERR(bw_state); + if (cdclk_state->min_cdclk[i] == min_cdclk) continue; @@ -2106,15 +2113,11 @@ static int intel_compute_min_cdclk(struct intel_cdclk_state *cdclk_state) } min_cdclk = cdclk_state->force_min_cdclk; + for_each_pipe(dev_priv, pipe) { + min_cdclk = max(cdclk_state->min_cdclk[pipe], min_cdclk); - for_each_new_intel_crtc_in_state(state, crtc, crtc_state, i) { - struct intel_bw_state *bw_state; - - min_cdclk = max(cdclk_state->min_cdclk[crtc->pipe], min_cdclk); - - bw_state = intel_atomic_get_bw_state(state); - if (IS_ERR(bw_state)) - return PTR_ERR(bw_state); + if (!bw_state) + continue; min_cdclk = max(bw_state->min_cdclk, min_cdclk); } diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 0b0faf9..43de656 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -14716,13 +14716,14 @@ static int intel_atomic_check_cdclk(struct intel_atomic_state *state, bool *need_cdclk_calc) { struct drm_i915_private *dev_priv = to_i915(state->base.dev); - int i; + struct intel_cdclk_state *new_cdclk_state; struct intel_plane_state *plane_state; + struct intel_bw_state *new_bw_state; struct intel_plane *plane; + int min_cdclk = 0; + enum pipe pipe; int ret; - struct intel_cdclk_state *new_cdclk_state; - struct intel_crtc_state *new_crtc_state; - struct intel_crtc *crtc; + int i; /* * active_planes bitmask has been updated, and potentially * affected planes are part of the state. We can now @@ -14743,23 +14744,18 @@ static int intel_atomic_check_cdclk(struct intel_atomic_state *state, if (ret) return ret; - if (!new_cdclk_state) - return 0; - - for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) { - struct intel_bw_state *bw_state; - int min_cdclk = 0; + new_bw_state = intel_atomic_get_new_bw_state(state); - min_cdclk = max(new_cdclk_state->min_cdclk[crtc->pipe], min_cdclk); + if (!new_cdclk_state || !new_bw_state) + return 0; - bw_state = intel_atomic_get_bw_state(state); - if (IS_ERR(bw_state)) - return PTR_ERR(bw_state); + for_each_pipe(dev_priv, pipe) { + min_cdclk = max(new_cdclk_state->min_cdclk[pipe], min_cdclk); /* * Currently do this change only if we need to increase */ - if (bw_state->min_cdclk > min_cdclk) + if (new_bw_state->min_cdclk > min_cdclk) *need_cdclk_calc = true; } -- 2.7.4