From mboxrd@z Thu Jan 1 00:00:00 1970 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 EC7ACC5DF70 for ; Tue, 18 Aug 2026 08:47:34 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id A9E4A10EA4A; Tue, 18 Aug 2026 08:47:34 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="nfFJ0MkS"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.17]) by gabe.freedesktop.org (Postfix) with ESMTPS id 7703A10E4DC; Tue, 18 Aug 2026 08:47:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1787042854; x=1818578854; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=GmRjcHnLOx6OUq/EqCnHfbEi2buKczuswz3ZBvn+4tQ=; b=nfFJ0MkSIA5oDItnKdgeIrFKWVOcOpUxnVFB6FyR/IE7Jn/fTLLUi0md +OIlyume2pcHm16pCB0khY5FtUAHqwMNqFjFqmgZ9DsjFK2ZlotroyZFX iBXwcumwhf1p2egZ3aeDDCMUQFqUmjCoUXWw4xeK+WM0t4SZVt5Hox5Es +XeWk8DPaUx0jaL2ZKz7MgAwZOk3CboIPgXoA7jpcJoBhWDDrh5prNebq 29Ji8HKHPSG8DoTc3alf7LDZBjzckQie3WKOBDEYDMnQcEBX/YW8IgGMQ bPX6TOu/9/Beggc81kHDE1nRsqw778+Qc5BjBG6QOJ9kzEhOzpjE86vbd w==; X-CSE-ConnectionGUID: C+eitLRHTQ2PimEMz2WxNw== X-CSE-MsgGUID: izNzgxLwTtOKvUyusx6jqQ== X-IronPort-AV: E=McAfee;i="6800,10657,11878"; a="87403771" X-IronPort-AV: E=Sophos;i="6.25,230,1779174000"; d="scan'208";a="87403771" Received: from fmviesa004.fm.intel.com ([10.60.135.144]) by fmvoesa111.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Aug 2026 01:47:33 -0700 X-CSE-ConnectionGUID: FVu4Df3oR4+Cczwfk157Ng== X-CSE-MsgGUID: vTXMHZnMQJOGP+nnBGN+jA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.25,230,1779174000"; d="scan'208";a="267136672" Received: from nemesa.iind.intel.com ([10.190.239.22]) by fmviesa004.fm.intel.com with ESMTP; 18 Aug 2026 01:47:32 -0700 From: Nemesa Garg To: intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org Cc: chaitanya.kumar.borah@intel.com, Nemesa Garg Subject: [PATCH 3/6] drm/i915/cursor: Handle secondary cursor state Date: Tue, 18 Aug 2026 14:12:33 +0530 Message-Id: <20260818084236.2168580-4-nemesa.garg@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20260818084236.2168580-1-nemesa.garg@intel.com> References: <20260818084236.2168580-1-nemesa.garg@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: intel-xe@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Xe graphics driver List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-xe-bounces@lists.freedesktop.org Sender: "Intel-xe" In joiner mode the fast path cursor update must handle secondary pipes. Iterate over all joined pipes uniformly to duplicate plane state, run check_plane(), pin the framebuffer and on success swap in the new plane state for each secondary cursor. Track every successfully prepared pipe in a joined_pipe_state[] array of struct intel_cursor_joiner_state so that later frontbuffer, unpin and error-cleanup paths treat primary and secondaries uniformly, and ensures the primary's pinned framebuffer is released if a secondary fails partway through. v2: Use intel_crtc_joined_pipe_mask(). [Ville] Add locking mechanism. [Ville] v3: Drop the per-pipe fastpath mutex array. [sashiko] v4: Fold parallel arrays into struct intel_cursor_joiner_state joined_pipe_state[]. unify primary/secondary in a single loop. use bare check_plane(). [Chaitanya] v5: Fix secondary uapi.crtc to each pipe's own crtc. Rename intel_cursor_pipe to intel_cursor_joiner_state and joined[] to joined_pipe_state[]. [Chaitanya] Assisted-by: Claude:claude-sonnet-4.6 Signed-off-by: Nemesa Garg --- drivers/gpu/drm/i915/display/intel_cursor.c | 121 ++++++++++++++------ 1 file changed, 86 insertions(+), 35 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_cursor.c b/drivers/gpu/drm/i915/display/intel_cursor.c index db4eaa74fc58..6492105cb976 100644 --- a/drivers/gpu/drm/i915/display/intel_cursor.c +++ b/drivers/gpu/drm/i915/display/intel_cursor.c @@ -863,6 +863,14 @@ intel_cursor_fastpath_update_plane_state(struct intel_plane_state *plane_state, intel_plane_copy_uapi_to_hw_state(NULL, plane_state, plane_state, hw_crtc); } +struct intel_cursor_joiner_state { + struct intel_plane *plane; + struct intel_crtc *crtc; + struct intel_crtc_state *crtc_state; + struct intel_plane_state *old_plane_state; + struct intel_plane_state *new_plane_state; +}; + static int intel_legacy_cursor_update(struct drm_plane *_plane, struct drm_crtc *_crtc, @@ -878,11 +886,13 @@ intel_legacy_cursor_update(struct drm_plane *_plane, struct intel_display *display = to_intel_display(plane); struct intel_plane_state *old_plane_state = to_intel_plane_state(plane->base.state); - struct intel_plane_state *new_plane_state; + struct intel_plane_state *new_plane_state = NULL; struct intel_crtc_state *crtc_state = to_intel_crtc_state(crtc->base.state); - struct intel_crtc_state *new_crtc_state; struct intel_vblank_evade_ctx evade; + struct intel_cursor_joiner_state joined_pipe_state[I915_MAX_PIPES] = {}; + struct intel_crtc *pipe_crtc; + int num_pipes = 0; int ret; /* @@ -928,38 +938,70 @@ intel_legacy_cursor_update(struct drm_plane *_plane, if (!intel_cursor_joiner_commits_idle(display, crtc_state)) goto slow; - new_plane_state = to_intel_plane_state(intel_plane_duplicate_state(&plane->base)); - if (!new_plane_state) - return -ENOMEM; + /* + * Iterate over all joined pipes (primary and secondary) uniformly. + * The joined pipe mask includes both the primary pipe and all + * secondary joiner pipes, allowing us to handle them all the same way. + */ + for_each_intel_crtc_in_pipe_mask(display, pipe_crtc, + intel_crtc_joined_pipe_mask(crtc_state)) { + struct intel_cursor_joiner_state *j = &joined_pipe_state[num_pipes]; + + j->plane = intel_crtc_get_plane(pipe_crtc, PLANE_CURSOR); + j->crtc = pipe_crtc; + j->crtc_state = to_intel_crtc_state(pipe_crtc->base.state); + j->old_plane_state = to_intel_plane_state(j->plane->base.state); + j->new_plane_state = + to_intel_plane_state(intel_plane_duplicate_state(&j->plane->base)); + + if (!j->new_plane_state) { + ret = -ENOMEM; + goto out_free; + } - new_crtc_state = to_intel_crtc_state(intel_crtc_duplicate_state(&crtc->base)); - if (!new_crtc_state) { - ret = -ENOMEM; - goto out_free; - } + j->new_plane_state->uapi.crtc = &pipe_crtc->base; - intel_cursor_fastpath_update_plane_state(new_plane_state, fb, - crtc, - crtc_x, crtc_y, crtc_w, crtc_h, - src_x, src_y, src_w, src_h); + intel_cursor_fastpath_update_plane_state(j->new_plane_state, fb, + pipe_crtc, + crtc_x, crtc_y, + crtc_w, crtc_h, + src_x, src_y, + src_w, src_h); - ret = intel_plane_atomic_check_with_state(crtc_state, new_crtc_state, - old_plane_state, new_plane_state); - if (ret) - goto out_free; + ret = j->plane->check_plane(j->crtc_state, j->new_plane_state); + if (ret) { + intel_plane_destroy_state(&j->plane->base, + &j->new_plane_state->uapi); + goto out_free; + } - ret = intel_plane_pin_fb(new_plane_state, old_plane_state); - if (ret) - goto out_free; + ret = intel_plane_pin_fb(j->new_plane_state, j->old_plane_state); + if (ret) { + intel_plane_destroy_state(&j->plane->base, + &j->new_plane_state->uapi); + goto out_free; + } + + num_pipes++; + } - intel_frontbuffer_flush(to_intel_frontbuffer(new_plane_state->hw.fb), + new_plane_state = joined_pipe_state[0].new_plane_state; + intel_frontbuffer_flush(to_intel_frontbuffer(joined_pipe_state[0].new_plane_state->hw.fb), ORIGIN_CURSOR_UPDATE); - intel_frontbuffer_track(to_intel_frontbuffer(old_plane_state->hw.fb), - to_intel_frontbuffer(new_plane_state->hw.fb), - plane->frontbuffer_bit); - /* Swap plane state */ - plane->base.state = &new_plane_state->uapi; + for (int i = 0; i < num_pipes; i++) + intel_frontbuffer_track(to_intel_frontbuffer(joined_pipe_state[i].old_plane_state->hw.fb), + to_intel_frontbuffer(joined_pipe_state[i].new_plane_state->hw.fb), + joined_pipe_state[i].plane->frontbuffer_bit); + + for (int i = 0; i < num_pipes; i++) { + joined_pipe_state[i].plane->base.state = &joined_pipe_state[i].new_plane_state->uapi; + + if (joined_pipe_state[i].new_plane_state->uapi.visible) + joined_pipe_state[i].crtc_state->active_planes |= BIT(PLANE_CURSOR); + else + joined_pipe_state[i].crtc_state->active_planes &= ~BIT(PLANE_CURSOR); + } /* * We cannot swap crtc_state as it may be in use by an atomic commit or @@ -971,7 +1013,6 @@ intel_legacy_cursor_update(struct drm_plane *_plane, * planes atomically. If the cursor was part of the atomic update then * we would have taken the slowpath. */ - crtc_state->active_planes = new_crtc_state->active_planes; intel_vblank_evade_init(crtc_state, crtc_state, &evade); @@ -1004,6 +1045,10 @@ intel_legacy_cursor_update(struct drm_plane *_plane, intel_psr_unlock(crtc_state); + /* + * Schedule or immediately unpin old framebuffers. + * Protect against concurrent access. + */ if (old_plane_state->ggtt_vma != new_plane_state->ggtt_vma) { drm_vblank_work_init(&old_plane_state->unpin_work, &crtc->base, intel_cursor_unpin_work); @@ -1012,18 +1057,24 @@ intel_legacy_cursor_update(struct drm_plane *_plane, drm_crtc_accurate_vblank_count(&crtc->base) + 1, false); - old_plane_state = NULL; + joined_pipe_state[0].old_plane_state = NULL; } else { intel_plane_unpin_fb(old_plane_state); } out_free: - if (new_crtc_state) - intel_crtc_destroy_state(&crtc->base, &new_crtc_state->uapi); - if (ret) - intel_plane_destroy_state(&plane->base, &new_plane_state->uapi); - else if (old_plane_state) - intel_plane_destroy_state(&plane->base, &old_plane_state->uapi); + if (ret) { + for (int i = 0; i < num_pipes; i++) { + intel_plane_unpin_fb(joined_pipe_state[i].new_plane_state); + intel_plane_destroy_state(&joined_pipe_state[i].plane->base, + &joined_pipe_state[i].new_plane_state->uapi); + } + } else { + for (int i = 0; i < num_pipes; i++) + if (joined_pipe_state[i].old_plane_state) + intel_plane_destroy_state(&joined_pipe_state[i].plane->base, + &joined_pipe_state[i].old_plane_state->uapi); + } return ret; slow: -- 2.25.1