From nobody Thu Dec 18 06:16:20 2025 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 6A9C3C83F05 for ; Fri, 25 Aug 2023 23:43:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231282AbjHYXms (ORCPT ); Fri, 25 Aug 2023 19:42:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52782 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231183AbjHYXmK (ORCPT ); Fri, 25 Aug 2023 19:42:10 -0400 Received: from mail-yw1-x1149.google.com (mail-yw1-x1149.google.com [IPv6:2607:f8b0:4864:20::1149]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D4228173F for ; Fri, 25 Aug 2023 16:42:08 -0700 (PDT) Received: by mail-yw1-x1149.google.com with SMTP id 00721157ae682-58cb845f2f2so20780327b3.1 for ; Fri, 25 Aug 2023 16:42:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1693006928; x=1693611728; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=xTd0pTstiRhUDqJtUofYBE2z2kJSDJQFF7iReicbrQU=; b=w1XqNyk/ALuiHYSKx5SAcadeYRAt6KoXfOM7Okj4w1lIGsPMQkl6gB2f35knvkvSK7 Km7S7WJZQz4X5Erj6IqLtnwv6m29CmCNZzwM7HjnWGC7XRErP44Zfp8z2ofOdfTrfCSM j2TfEkeADl78CLBwEnLVGva2JM3XMLpz8SElwIsNnbYpj+4xD7O3ov88QJ6RjB1Xcnv5 fL8Hyc+sOgGBFYxmugAKuusuFpaeTcvrxgBho/Mw91KFvau9spK8Cpy3QlvUtIAUV4X3 0mkLx0Qm1TB9+M6B2nveUo4JAms6gzoyjDsR4gNnETsmb2Oft/K7SYMCgS/tPqPFmfY8 hgzw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1693006928; x=1693611728; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=xTd0pTstiRhUDqJtUofYBE2z2kJSDJQFF7iReicbrQU=; b=eW3ECUuQFSwvp7GS4/yYttWTUZ8bAI3FzezV8z5mT7Jk2ffGI0QsL00BPbu24tEn/V r9SGOeu1v3FzpH0+9Ico+Xceny4SHwOjIlo7S2zZBbZA5VNP1VbFjjsAKratY3VbSs0k 8EcmnL3ZVRunwXgc4n+fyDrsoeKNaxyjznSvyn0FwH8SJbo1sWSUwZqzptxg+CQe+4eH vXPe0BhHoNcutcj98K1d22Hsq9EERw0t5BBLH7irJa/S5b+oywGS9tQ+xZ/zF532EbBX QkYP5qDqlFKmIozPrLRoaPeOONawhhJyU7IKbUeJjhyEa/2wqXLreTc+0qTgNSp3CBg+ Pg5g== X-Gm-Message-State: AOJu0YzXpcCV6YSwmZMciDwNCiHhf9PCH633H6JsqA4AwPm41ZrZ1Fd4 5cDS/qQKo5Ch7WBjCX0cLVFi018wQw== X-Google-Smtp-Source: AGHT+IFO9IwsKgSvW6JTlPKE1WHMEGqy2Fd3gU8oqRIPyjU7f91FtzhTIL0hbuq5iATjJo939fCjkcsy9Ls= X-Received: from yabinc-desktop.mtv.corp.google.com ([2620:15c:211:202:4739:860d:b144:6102]) (user=yabinc job=sendgmr) by 2002:a81:ae41:0:b0:565:9e73:f937 with SMTP id g1-20020a81ae41000000b005659e73f937mr503711ywk.4.1693006928162; Fri, 25 Aug 2023 16:42:08 -0700 (PDT) Date: Fri, 25 Aug 2023 16:42:04 -0700 Mime-Version: 1.0 X-Mailer: git-send-email 2.42.0.rc1.204.g551eb34607-goog Message-ID: <20230825234204.1885083-1-yabinc@google.com> Subject: [PATCH] coresight: ete: Enable iomem access From: Yabin Cui To: Suzuki K Poulose , Mike Leach , James Clark , Leo Yan Cc: Alexander Shishkin , coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Yabin Cui Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" On some devices, sysreg access to ETE may be disabled, while iomem access is still usable. Signed-off-by: Yabin Cui --- drivers/hwtracing/coresight/coresight-etm4x-core.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-etm4x-core.c b/drivers/h= wtracing/coresight/coresight-etm4x-core.c index 7e307022303a..de14aa55af63 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x-core.c +++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c @@ -1079,8 +1079,9 @@ static bool etm4_init_iomem_access(struct etmv4_drvda= ta *drvdata, * with MMIO. But we cannot touch the OSLK until we are * sure this is an ETM. So rely only on the TRCDEVARCH. */ - if ((devarch & ETM_DEVARCH_ID_MASK) !=3D ETM_DEVARCH_ETMv4x_ARCH) { - pr_warn_once("TRCDEVARCH doesn't match ETMv4 architecture\n"); + if ((devarch & ETM_DEVARCH_ID_MASK) !=3D ETM_DEVARCH_ETMv4x_ARCH && + (devarch & ETM_DEVARCH_ID_MASK) !=3D ETM_DEVARCH_ETE_ARCH) { + pr_warn_once("TRCDEVARCH doesn't match ETMv4/ETE architecture\n"); return false; } =20 --=20 2.42.0.rc1.204.g551eb34607-goog