From patchwork Thu Oct 31 15:56:41 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?VmlsbGUgU3lyasOkbMOk?= X-Patchwork-Id: 13858150 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 39DB3D767DF for ; Thu, 31 Oct 2024 15:56:54 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D1D2A10E8D4; Thu, 31 Oct 2024 15:56:53 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="eFCs4RcI"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.19]) by gabe.freedesktop.org (Postfix) with ESMTPS id 7BD7D10E8D4 for ; Thu, 31 Oct 2024 15:56:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1730390212; x=1761926212; h=from:to:subject:date:message-id:in-reply-to:references: mime-version:content-transfer-encoding; bh=pgNuoX7KZnyKMhUAj+U8BmaVTrEDLgvPkQkQRR6owZ0=; b=eFCs4RcIr85vL5XFoP8Q5ivGPogW27haLr/BehItohSOxWUO3LuDbbP5 tRbijnfvbI81+c6Q0XGNJEs54h0h5WANYWtM7jB6m51TcKgdOe7DtmlLD 7R5YfOKf6x8GolDTW+HEDG2D0kklAwiBBQSqsYcelgFsAyumRw65Px4Sm Oesbb4KKWhRUQYuEuVstWyuwMADqiyBE/GTQFXuHOzA+ufgfej6FXqUSL SJYsOdt0TCqAu+OxPZ8HfsLSBbrbK6eIfRf+a+/mYkJ9fqNgvkWT4V0h/ jI1H7dcPU3QzIPVf3sUOhHTpQse3cfwRAnNPE1cKk212IawIgkt32sD23 w==; X-CSE-ConnectionGUID: 01iY0MRcRB25QcZE+sHQfQ== X-CSE-MsgGUID: Hb17K0qYSrKQpCAi0Pbsyg== X-IronPort-AV: E=McAfee;i="6700,10204,11242"; a="29575321" X-IronPort-AV: E=Sophos;i="6.11,247,1725346800"; d="scan'208";a="29575321" Received: from fmviesa008.fm.intel.com ([10.60.135.148]) by fmvoesa113.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 Oct 2024 08:56:52 -0700 X-CSE-ConnectionGUID: iZYi71RVRimlB6/eUnu6Ww== X-CSE-MsgGUID: 34ygDVe9Rva7fH0++veeGQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.11,247,1725346800"; d="scan'208";a="82791562" Received: from stinkpipe.fi.intel.com (HELO stinkbox) ([10.237.72.74]) by fmviesa008.fm.intel.com with SMTP; 31 Oct 2024 08:56:50 -0700 Received: by stinkbox (sSMTP sendmail emulation); Thu, 31 Oct 2024 17:56:49 +0200 From: Ville Syrjala To: intel-gfx@lists.freedesktop.org Subject: [PATCH 1/6] drm/i915: Relocate the SKL wm sanitation code Date: Thu, 31 Oct 2024 17:56:41 +0200 Message-ID: <20241031155646.15165-2-ville.syrjala@linux.intel.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20241031155646.15165-1-ville.syrjala@linux.intel.com> References: <20241031155646.15165-1-ville.syrjala@linux.intel.com> MIME-Version: 1.0 X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Ville Syrjälä In order to add more MBUS sanitation into the code we'll want to reuse a bunch of the code that performs the MBUS/related hardware programming. Currently that code comes after the main skl_wm_get_hw_state_and_sanitize() entrypoint. In order to avoid annoying forward declarations relocate the skl_wm_get_hw_state_and_sanitize() and related stuff nearer to the end of the file. Signed-off-by: Ville Syrjälä --- drivers/gpu/drm/i915/display/skl_watermark.c | 420 +++++++++---------- 1 file changed, 210 insertions(+), 210 deletions(-) diff --git a/drivers/gpu/drm/i915/display/skl_watermark.c b/drivers/gpu/drm/i915/display/skl_watermark.c index 3b0e87edbacf..92794dfbd3bd 100644 --- a/drivers/gpu/drm/i915/display/skl_watermark.c +++ b/drivers/gpu/drm/i915/display/skl_watermark.c @@ -3048,202 +3048,6 @@ static void skl_wm_get_hw_state(struct drm_i915_private *i915) dbuf_state->enabled_slices = i915->display.dbuf.enabled_slices; } -static bool skl_dbuf_is_misconfigured(struct drm_i915_private *i915) -{ - const struct intel_dbuf_state *dbuf_state = - to_intel_dbuf_state(i915->display.dbuf.obj.state); - struct skl_ddb_entry entries[I915_MAX_PIPES] = {}; - struct intel_crtc *crtc; - - for_each_intel_crtc(&i915->drm, crtc) { - const struct intel_crtc_state *crtc_state = - to_intel_crtc_state(crtc->base.state); - - entries[crtc->pipe] = crtc_state->wm.skl.ddb; - } - - for_each_intel_crtc(&i915->drm, crtc) { - const struct intel_crtc_state *crtc_state = - to_intel_crtc_state(crtc->base.state); - u8 slices; - - slices = skl_compute_dbuf_slices(crtc, dbuf_state->active_pipes, - dbuf_state->joined_mbus); - if (dbuf_state->slices[crtc->pipe] & ~slices) - return true; - - if (skl_ddb_allocation_overlaps(&crtc_state->wm.skl.ddb, entries, - I915_MAX_PIPES, crtc->pipe)) - return true; - } - - return false; -} - -static void skl_wm_sanitize(struct drm_i915_private *i915) -{ - struct intel_crtc *crtc; - - /* - * On TGL/RKL (at least) the BIOS likes to assign the planes - * to the wrong DBUF slices. This will cause an infinite loop - * in skl_commit_modeset_enables() as it can't find a way to - * transition between the old bogus DBUF layout to the new - * proper DBUF layout without DBUF allocation overlaps between - * the planes (which cannot be allowed or else the hardware - * may hang). If we detect a bogus DBUF layout just turn off - * all the planes so that skl_commit_modeset_enables() can - * simply ignore them. - */ - if (!skl_dbuf_is_misconfigured(i915)) - return; - - drm_dbg_kms(&i915->drm, "BIOS has misprogrammed the DBUF, disabling all planes\n"); - - for_each_intel_crtc(&i915->drm, crtc) { - struct intel_plane *plane = to_intel_plane(crtc->base.primary); - const struct intel_plane_state *plane_state = - to_intel_plane_state(plane->base.state); - struct intel_crtc_state *crtc_state = - to_intel_crtc_state(crtc->base.state); - - if (plane_state->uapi.visible) - intel_plane_disable_noatomic(crtc, plane); - - drm_WARN_ON(&i915->drm, crtc_state->active_planes != 0); - - memset(&crtc_state->wm.skl.ddb, 0, sizeof(crtc_state->wm.skl.ddb)); - } -} - -static void skl_wm_get_hw_state_and_sanitize(struct drm_i915_private *i915) -{ - skl_wm_get_hw_state(i915); - skl_wm_sanitize(i915); -} - -void intel_wm_state_verify(struct intel_atomic_state *state, - struct intel_crtc *crtc) -{ - struct drm_i915_private *i915 = to_i915(state->base.dev); - const struct intel_crtc_state *new_crtc_state = - intel_atomic_get_new_crtc_state(state, crtc); - struct skl_hw_state { - struct skl_ddb_entry ddb[I915_MAX_PLANES]; - struct skl_ddb_entry ddb_y[I915_MAX_PLANES]; - struct skl_pipe_wm wm; - } *hw; - const struct skl_pipe_wm *sw_wm = &new_crtc_state->wm.skl.optimal; - struct intel_plane *plane; - u8 hw_enabled_slices; - int level; - - if (DISPLAY_VER(i915) < 9 || !new_crtc_state->hw.active) - return; - - hw = kzalloc(sizeof(*hw), GFP_KERNEL); - if (!hw) - return; - - skl_pipe_wm_get_hw_state(crtc, &hw->wm); - - skl_pipe_ddb_get_hw_state(crtc, hw->ddb, hw->ddb_y); - - hw_enabled_slices = intel_enabled_dbuf_slices_mask(i915); - - if (DISPLAY_VER(i915) >= 11 && - hw_enabled_slices != i915->display.dbuf.enabled_slices) - drm_err(&i915->drm, - "mismatch in DBUF Slices (expected 0x%x, got 0x%x)\n", - i915->display.dbuf.enabled_slices, - hw_enabled_slices); - - for_each_intel_plane_on_crtc(&i915->drm, crtc, plane) { - const struct skl_ddb_entry *hw_ddb_entry, *sw_ddb_entry; - const struct skl_wm_level *hw_wm_level, *sw_wm_level; - - /* Watermarks */ - for (level = 0; level < i915->display.wm.num_levels; level++) { - hw_wm_level = &hw->wm.planes[plane->id].wm[level]; - sw_wm_level = skl_plane_wm_level(sw_wm, plane->id, level); - - if (skl_wm_level_equals(hw_wm_level, sw_wm_level)) - continue; - - drm_err(&i915->drm, - "[PLANE:%d:%s] mismatch in WM%d (expected e=%d b=%u l=%u, got e=%d b=%u l=%u)\n", - plane->base.base.id, plane->base.name, level, - sw_wm_level->enable, - sw_wm_level->blocks, - sw_wm_level->lines, - hw_wm_level->enable, - hw_wm_level->blocks, - hw_wm_level->lines); - } - - hw_wm_level = &hw->wm.planes[plane->id].trans_wm; - sw_wm_level = skl_plane_trans_wm(sw_wm, plane->id); - - if (!skl_wm_level_equals(hw_wm_level, sw_wm_level)) { - drm_err(&i915->drm, - "[PLANE:%d:%s] mismatch in trans WM (expected e=%d b=%u l=%u, got e=%d b=%u l=%u)\n", - plane->base.base.id, plane->base.name, - sw_wm_level->enable, - sw_wm_level->blocks, - sw_wm_level->lines, - hw_wm_level->enable, - hw_wm_level->blocks, - hw_wm_level->lines); - } - - hw_wm_level = &hw->wm.planes[plane->id].sagv.wm0; - sw_wm_level = &sw_wm->planes[plane->id].sagv.wm0; - - if (HAS_HW_SAGV_WM(i915) && - !skl_wm_level_equals(hw_wm_level, sw_wm_level)) { - drm_err(&i915->drm, - "[PLANE:%d:%s] mismatch in SAGV WM (expected e=%d b=%u l=%u, got e=%d b=%u l=%u)\n", - plane->base.base.id, plane->base.name, - sw_wm_level->enable, - sw_wm_level->blocks, - sw_wm_level->lines, - hw_wm_level->enable, - hw_wm_level->blocks, - hw_wm_level->lines); - } - - hw_wm_level = &hw->wm.planes[plane->id].sagv.trans_wm; - sw_wm_level = &sw_wm->planes[plane->id].sagv.trans_wm; - - if (HAS_HW_SAGV_WM(i915) && - !skl_wm_level_equals(hw_wm_level, sw_wm_level)) { - drm_err(&i915->drm, - "[PLANE:%d:%s] mismatch in SAGV trans WM (expected e=%d b=%u l=%u, got e=%d b=%u l=%u)\n", - plane->base.base.id, plane->base.name, - sw_wm_level->enable, - sw_wm_level->blocks, - sw_wm_level->lines, - hw_wm_level->enable, - hw_wm_level->blocks, - hw_wm_level->lines); - } - - /* DDB */ - hw_ddb_entry = &hw->ddb[PLANE_CURSOR]; - sw_ddb_entry = &new_crtc_state->wm.skl.plane_ddb[PLANE_CURSOR]; - - if (!skl_ddb_entry_equal(hw_ddb_entry, sw_ddb_entry)) { - drm_err(&i915->drm, - "[PLANE:%d:%s] mismatch in DDB (expected (%u,%u), found (%u,%u))\n", - plane->base.base.id, plane->base.name, - sw_ddb_entry->start, sw_ddb_entry->end, - hw_ddb_entry->start, hw_ddb_entry->end); - } - } - - kfree(hw); -} - bool skl_watermark_ipc_enabled(struct drm_i915_private *i915) { return i915->display.wm.ipc_enabled; @@ -3399,20 +3203,6 @@ static void skl_setup_wm_latency(struct drm_i915_private *i915) intel_print_wm_latency(i915, "Gen9 Plane", i915->display.wm.skl_latency); } -static const struct intel_wm_funcs skl_wm_funcs = { - .compute_global_watermarks = skl_compute_wm, - .get_hw_state = skl_wm_get_hw_state_and_sanitize, -}; - -void skl_wm_init(struct drm_i915_private *i915) -{ - intel_sagv_init(i915); - - skl_setup_wm_latency(i915); - - i915->display.funcs.wm = &skl_wm_funcs; -} - static struct intel_global_state *intel_dbuf_duplicate_state(struct intel_global_obj *obj) { struct intel_dbuf_state *dbuf_state; @@ -3757,6 +3547,216 @@ void intel_dbuf_post_plane_update(struct intel_atomic_state *state) gen9_dbuf_slices_update(i915, new_slices); } +static bool skl_dbuf_is_misconfigured(struct drm_i915_private *i915) +{ + const struct intel_dbuf_state *dbuf_state = + to_intel_dbuf_state(i915->display.dbuf.obj.state); + struct skl_ddb_entry entries[I915_MAX_PIPES] = {}; + struct intel_crtc *crtc; + + for_each_intel_crtc(&i915->drm, crtc) { + const struct intel_crtc_state *crtc_state = + to_intel_crtc_state(crtc->base.state); + + entries[crtc->pipe] = crtc_state->wm.skl.ddb; + } + + for_each_intel_crtc(&i915->drm, crtc) { + const struct intel_crtc_state *crtc_state = + to_intel_crtc_state(crtc->base.state); + u8 slices; + + slices = skl_compute_dbuf_slices(crtc, dbuf_state->active_pipes, + dbuf_state->joined_mbus); + if (dbuf_state->slices[crtc->pipe] & ~slices) + return true; + + if (skl_ddb_allocation_overlaps(&crtc_state->wm.skl.ddb, entries, + I915_MAX_PIPES, crtc->pipe)) + return true; + } + + return false; +} + +static void skl_wm_sanitize(struct drm_i915_private *i915) +{ + struct intel_crtc *crtc; + + /* + * On TGL/RKL (at least) the BIOS likes to assign the planes + * to the wrong DBUF slices. This will cause an infinite loop + * in skl_commit_modeset_enables() as it can't find a way to + * transition between the old bogus DBUF layout to the new + * proper DBUF layout without DBUF allocation overlaps between + * the planes (which cannot be allowed or else the hardware + * may hang). If we detect a bogus DBUF layout just turn off + * all the planes so that skl_commit_modeset_enables() can + * simply ignore them. + */ + if (!skl_dbuf_is_misconfigured(i915)) + return; + + drm_dbg_kms(&i915->drm, "BIOS has misprogrammed the DBUF, disabling all planes\n"); + + for_each_intel_crtc(&i915->drm, crtc) { + struct intel_plane *plane = to_intel_plane(crtc->base.primary); + const struct intel_plane_state *plane_state = + to_intel_plane_state(plane->base.state); + struct intel_crtc_state *crtc_state = + to_intel_crtc_state(crtc->base.state); + + if (plane_state->uapi.visible) + intel_plane_disable_noatomic(crtc, plane); + + drm_WARN_ON(&i915->drm, crtc_state->active_planes != 0); + + memset(&crtc_state->wm.skl.ddb, 0, sizeof(crtc_state->wm.skl.ddb)); + } +} + +static void skl_wm_get_hw_state_and_sanitize(struct drm_i915_private *i915) +{ + skl_wm_get_hw_state(i915); + skl_wm_sanitize(i915); +} + +void intel_wm_state_verify(struct intel_atomic_state *state, + struct intel_crtc *crtc) +{ + struct drm_i915_private *i915 = to_i915(state->base.dev); + const struct intel_crtc_state *new_crtc_state = + intel_atomic_get_new_crtc_state(state, crtc); + struct skl_hw_state { + struct skl_ddb_entry ddb[I915_MAX_PLANES]; + struct skl_ddb_entry ddb_y[I915_MAX_PLANES]; + struct skl_pipe_wm wm; + } *hw; + const struct skl_pipe_wm *sw_wm = &new_crtc_state->wm.skl.optimal; + struct intel_plane *plane; + u8 hw_enabled_slices; + int level; + + if (DISPLAY_VER(i915) < 9 || !new_crtc_state->hw.active) + return; + + hw = kzalloc(sizeof(*hw), GFP_KERNEL); + if (!hw) + return; + + skl_pipe_wm_get_hw_state(crtc, &hw->wm); + + skl_pipe_ddb_get_hw_state(crtc, hw->ddb, hw->ddb_y); + + hw_enabled_slices = intel_enabled_dbuf_slices_mask(i915); + + if (DISPLAY_VER(i915) >= 11 && + hw_enabled_slices != i915->display.dbuf.enabled_slices) + drm_err(&i915->drm, + "mismatch in DBUF Slices (expected 0x%x, got 0x%x)\n", + i915->display.dbuf.enabled_slices, + hw_enabled_slices); + + for_each_intel_plane_on_crtc(&i915->drm, crtc, plane) { + const struct skl_ddb_entry *hw_ddb_entry, *sw_ddb_entry; + const struct skl_wm_level *hw_wm_level, *sw_wm_level; + + /* Watermarks */ + for (level = 0; level < i915->display.wm.num_levels; level++) { + hw_wm_level = &hw->wm.planes[plane->id].wm[level]; + sw_wm_level = skl_plane_wm_level(sw_wm, plane->id, level); + + if (skl_wm_level_equals(hw_wm_level, sw_wm_level)) + continue; + + drm_err(&i915->drm, + "[PLANE:%d:%s] mismatch in WM%d (expected e=%d b=%u l=%u, got e=%d b=%u l=%u)\n", + plane->base.base.id, plane->base.name, level, + sw_wm_level->enable, + sw_wm_level->blocks, + sw_wm_level->lines, + hw_wm_level->enable, + hw_wm_level->blocks, + hw_wm_level->lines); + } + + hw_wm_level = &hw->wm.planes[plane->id].trans_wm; + sw_wm_level = skl_plane_trans_wm(sw_wm, plane->id); + + if (!skl_wm_level_equals(hw_wm_level, sw_wm_level)) { + drm_err(&i915->drm, + "[PLANE:%d:%s] mismatch in trans WM (expected e=%d b=%u l=%u, got e=%d b=%u l=%u)\n", + plane->base.base.id, plane->base.name, + sw_wm_level->enable, + sw_wm_level->blocks, + sw_wm_level->lines, + hw_wm_level->enable, + hw_wm_level->blocks, + hw_wm_level->lines); + } + + hw_wm_level = &hw->wm.planes[plane->id].sagv.wm0; + sw_wm_level = &sw_wm->planes[plane->id].sagv.wm0; + + if (HAS_HW_SAGV_WM(i915) && + !skl_wm_level_equals(hw_wm_level, sw_wm_level)) { + drm_err(&i915->drm, + "[PLANE:%d:%s] mismatch in SAGV WM (expected e=%d b=%u l=%u, got e=%d b=%u l=%u)\n", + plane->base.base.id, plane->base.name, + sw_wm_level->enable, + sw_wm_level->blocks, + sw_wm_level->lines, + hw_wm_level->enable, + hw_wm_level->blocks, + hw_wm_level->lines); + } + + hw_wm_level = &hw->wm.planes[plane->id].sagv.trans_wm; + sw_wm_level = &sw_wm->planes[plane->id].sagv.trans_wm; + + if (HAS_HW_SAGV_WM(i915) && + !skl_wm_level_equals(hw_wm_level, sw_wm_level)) { + drm_err(&i915->drm, + "[PLANE:%d:%s] mismatch in SAGV trans WM (expected e=%d b=%u l=%u, got e=%d b=%u l=%u)\n", + plane->base.base.id, plane->base.name, + sw_wm_level->enable, + sw_wm_level->blocks, + sw_wm_level->lines, + hw_wm_level->enable, + hw_wm_level->blocks, + hw_wm_level->lines); + } + + /* DDB */ + hw_ddb_entry = &hw->ddb[PLANE_CURSOR]; + sw_ddb_entry = &new_crtc_state->wm.skl.plane_ddb[PLANE_CURSOR]; + + if (!skl_ddb_entry_equal(hw_ddb_entry, sw_ddb_entry)) { + drm_err(&i915->drm, + "[PLANE:%d:%s] mismatch in DDB (expected (%u,%u), found (%u,%u))\n", + plane->base.base.id, plane->base.name, + sw_ddb_entry->start, sw_ddb_entry->end, + hw_ddb_entry->start, hw_ddb_entry->end); + } + } + + kfree(hw); +} + +static const struct intel_wm_funcs skl_wm_funcs = { + .compute_global_watermarks = skl_compute_wm, + .get_hw_state = skl_wm_get_hw_state_and_sanitize, +}; + +void skl_wm_init(struct drm_i915_private *i915) +{ + intel_sagv_init(i915); + + skl_setup_wm_latency(i915); + + i915->display.funcs.wm = &skl_wm_funcs; +} + static int skl_watermark_ipc_status_show(struct seq_file *m, void *data) { struct drm_i915_private *i915 = m->private;