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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C1E6FC2BB3F for ; Wed, 15 Nov 2023 19:43:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235099AbjKOTnN (ORCPT ); Wed, 15 Nov 2023 14:43:13 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54454 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235108AbjKOTnM (ORCPT ); Wed, 15 Nov 2023 14:43:12 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 270F09E for ; Wed, 15 Nov 2023 11:43:08 -0800 (PST) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A07B3C433C9; Wed, 15 Nov 2023 19:43:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1700077387; bh=8Xz5mjRyaYbn5XtL98RcVYM128T/xuYwWpRjxl9DExc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RJmJfLa0Y+RT4UEbJ8i3xBot7jZ3zlVQbQKb0o+beyM8NOYt+PCqalctm/KKB9uv9 +Bj1OmxBnniTyV5J8kbY972XU2O3ebAc35ggBCkFBeVjMhErm74oId9W1zsY7oXTu7 tZgM75mAZz29tc6iKsgwh4zNdxNTDa+5RShiK80Y= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Robin Murphy , Ilkka Koskinen , Will Deacon , Sasha Levin Subject: [PATCH 6.6 272/603] perf/arm-cmn: Fix DTC domain detection Date: Wed, 15 Nov 2023 14:13:37 -0500 Message-ID: <20231115191632.166022452@linuxfoundation.org> X-Mailer: git-send-email 2.42.1 In-Reply-To: <20231115191613.097702445@linuxfoundation.org> References: <20231115191613.097702445@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Robin Murphy [ Upstream commit e3e73f511c49c741f6309862c2248958ad77bbaa ] It transpires that dtm_unit_info is another register which got shuffled in CMN-700 without me noticing. Fix that in a way which also proactively fixes the fragile laziness of its consumer, just in case any further fields ever get added alongside dtc_domain. Fixes: 23760a014417 ("perf/arm-cmn: Add CMN-700 support") Signed-off-by: Robin Murphy Reviewed-by: Ilkka Koskinen Link: https://lore.kernel.org/r/3076ee83d0554f6939fbb6ee49ab2bdb28d8c7ee.1697824215.git.robin.murphy@arm.com Signed-off-by: Will Deacon Signed-off-by: Sasha Levin --- drivers/perf/arm-cmn.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/perf/arm-cmn.c b/drivers/perf/arm-cmn.c index 6b50bc5519846..caae2d3e9d3ea 100644 --- a/drivers/perf/arm-cmn.c +++ b/drivers/perf/arm-cmn.c @@ -112,7 +112,9 @@ #define CMN_DTM_PMEVCNTSR 0x240 -#define CMN_DTM_UNIT_INFO 0x0910 +#define CMN650_DTM_UNIT_INFO 0x0910 +#define CMN_DTM_UNIT_INFO 0x0960 +#define CMN_DTM_UNIT_INFO_DTC_DOMAIN GENMASK_ULL(1, 0) #define CMN_DTM_NUM_COUNTERS 4 /* Want more local counters? Why not replicate the whole DTM! Ugh... */ @@ -2117,6 +2119,16 @@ static int arm_cmn_init_dtcs(struct arm_cmn *cmn) return 0; } +static unsigned int arm_cmn_dtc_domain(struct arm_cmn *cmn, void __iomem *xp_region) +{ + int offset = CMN_DTM_UNIT_INFO; + + if (cmn->part == PART_CMN650 || cmn->part == PART_CI700) + offset = CMN650_DTM_UNIT_INFO; + + return FIELD_GET(CMN_DTM_UNIT_INFO_DTC_DOMAIN, readl_relaxed(xp_region + offset)); +} + static void arm_cmn_init_node_info(struct arm_cmn *cmn, u32 offset, struct arm_cmn_node *node) { int level; @@ -2248,7 +2260,7 @@ static int arm_cmn_discover(struct arm_cmn *cmn, unsigned int rgn_offset) if (cmn->part == PART_CMN600) xp->dtc = 0xf; else - xp->dtc = 1 << readl_relaxed(xp_region + CMN_DTM_UNIT_INFO); + xp->dtc = 1 << arm_cmn_dtc_domain(cmn, xp_region); xp->dtm = dtm - cmn->dtms; arm_cmn_init_dtm(dtm++, xp, 0); -- 2.42.0