From patchwork Wed Dec 21 23:19:40 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marijn Suijten X-Patchwork-Id: 13079303 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 00409C10F1B for ; Wed, 21 Dec 2022 23:20:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235002AbiLUXUW (ORCPT ); Wed, 21 Dec 2022 18:20:22 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32792 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234988AbiLUXUL (ORCPT ); Wed, 21 Dec 2022 18:20:11 -0500 Received: from relay04.th.seeweb.it (relay04.th.seeweb.it [IPv6:2001:4b7a:2000:18::165]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E6DFD24BE8 for ; Wed, 21 Dec 2022 15:20:05 -0800 (PST) Received: from localhost.localdomain (94-209-172-39.cable.dynamic.v4.ziggo.nl [94.209.172.39]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by m-r1.th.seeweb.it (Postfix) with ESMTPSA id 8ACD82038C; Thu, 22 Dec 2022 00:20:03 +0100 (CET) From: Marijn Suijten To: phone-devel@vger.kernel.org, Rob Clark , Abhinav Kumar , Dmitry Baryshkov , Vinod Koul Cc: ~postmarketos/upstreaming@lists.sr.ht, AngeloGioacchino Del Regno , Konrad Dybcio , Martin Botka , Jami Kettunen , Marijn Suijten , Sean Paul , David Airlie , Daniel Vetter , Stephen Boyd , Bjorn Andersson , Jessica Zhang , =?utf-8?b?VmlsbGUgU3lyasOkbMOk?= , Kuogee Hsieh , Jani Nikula , sunliming , Sam Ravnborg , Haowen Bai , Konrad Dybcio , Loic Poulain , Vinod Polimera , Douglas Anderson , Vladimir Lypak , linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 5/8] drm/msm/dpu: Reject topologies for which no DSC blocks are available Date: Thu, 22 Dec 2022 00:19:40 +0100 Message-Id: <20221221231943.1961117-6-marijn.suijten@somainline.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20221221231943.1961117-1-marijn.suijten@somainline.org> References: <20221221231943.1961117-1-marijn.suijten@somainline.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Resource allocation of DSC blocks should behave more like LMs and CTLs where NULL resources (based on initial hw_blk creation via definitions in the catalog) are skipped ^1. The current hardcoded mapping of DSC blocks however means that resource allocation shouldn't succeed at all when the DSC block on the corresponding index doesn't exist, rather than searching for the next free block. This hardcoded mapping should be loosened separately as DPU 5.0.0 introduced a crossbar where DSC blocks can be "somewhat" freely bound to any PP and CTL (in proper pairs). ^1: which, on hardware that supports DSC, can happen after a git rebase ended up moving additions to _dpu_cfg to a different struct which has the same patch context. Fixes: f2803ee91a41 ("drm/msm/disp/dpu1: Add DSC support in RM") Signed-off-by: Marijn Suijten Reviewed-by: Dmitry Baryshkov --- drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c index 8471d04bff50..dcbf03d2940a 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c @@ -496,6 +496,11 @@ static int _dpu_rm_reserve_dsc(struct dpu_rm *rm, /* check if DSC required are allocated or not */ for (i = 0; i < num_dsc; i++) { + if (!rm->dsc_blks[i]) { + DPU_ERROR("DSC %d does not exist\n", i); + return -EIO; + } + if (global_state->dsc_to_enc_id[i]) { DPU_ERROR("DSC %d is already allocated\n", i); return -EIO;